diff --git a/src/tint/writer/msl/generator_impl.cc b/src/tint/writer/msl/generator_impl.cc
index 578e78df8d..cd984b26bb 100644
--- a/src/tint/writer/msl/generator_impl.cc
+++ b/src/tint/writer/msl/generator_impl.cc
@@ -36,12 +36,12 @@
 #include "src/tint/sem/atomic.h"
 #include "src/tint/sem/bool.h"
 #include "src/tint/sem/call.h"
+#include "src/tint/sem/constant.h"
 #include "src/tint/sem/depth_multisampled_texture.h"
 #include "src/tint/sem/depth_texture.h"
 #include "src/tint/sem/f32.h"
 #include "src/tint/sem/function.h"
 #include "src/tint/sem/i32.h"
-#include "src/tint/sem/materialize.h"
 #include "src/tint/sem/matrix.h"
 #include "src/tint/sem/member_accessor_expression.h"
 #include "src/tint/sem/module.h"
@@ -86,6 +86,31 @@ bool last_is_break_or_fallthrough(const ast::BlockStatement* stmts) {
     return IsAnyOf<ast::BreakStatement, ast::FallthroughStatement>(stmts->Last());
 }
 
+void PrintF32(std::ostream& out, float value) {
+    // Note: Currently inf and nan should not be constructable, but this is implemented for the day
+    // we support them.
+    if (std::isinf(value)) {
+        out << (value >= 0 ? "INFINITY" : "-INFINITY");
+    } else if (std::isnan(value)) {
+        out << "NAN";
+    } else {
+        out << FloatToString(value) << "f";
+    }
+}
+
+void PrintI32(std::ostream& out, int32_t value) {
+    // MSL (and C++) parse `-2147483648` as a `long` because it parses unary minus and `2147483648`
+    // as separate tokens, and the latter doesn't fit into an (32-bit) `int`.
+    // WGSL, on the other hand, parses this as an `i32`.
+    // To avoid issues with `long` to `int` casts, emit `(-2147483647 - 1)` instead, which ensures
+    // the expression type is `int`.
+    if (auto int_min = std::numeric_limits<int32_t>::min(); value == int_min) {
+        out << "(" << int_min + 1 << " - 1)";
+    } else {
+        out << value;
+    }
+}
+
 class ScopedBitCast {
   public:
     ScopedBitCast(GeneratorImpl* generator,
@@ -551,12 +576,7 @@ bool GeneratorImpl::EmitBreak(const ast::BreakStatement*) {
 }
 
 bool GeneratorImpl::EmitCall(std::ostream& out, const ast::CallExpression* expr) {
-    auto* sem = program_->Sem().Get(expr);
-    if (auto* m = sem->As<sem::Materialize>()) {
-        // TODO(crbug.com/tint/1504): Just emit the constant value.
-        sem = m->Expr();
-    }
-    auto* call = sem->As<sem::Call>();
+    auto* call = program_->Sem().Get<sem::Call>(expr);
     auto* target = call->Target();
     return Switch(
         target, [&](const sem::Function* func) { return EmitFunctionCall(out, call, func); },
@@ -1522,8 +1542,7 @@ bool GeneratorImpl::EmitZeroValue(std::ostream& out, const sem::Type* type) {
             if (!EmitType(out, mat, "")) {
                 return false;
             }
-            out << "(";
-            TINT_DEFER(out << ")");
+            ScopedParen sp(out);
             return EmitZeroValue(out, mat->type());
         },
         [&](const sem::Array* arr) {
@@ -1543,6 +1562,92 @@ bool GeneratorImpl::EmitZeroValue(std::ostream& out, const sem::Type* type) {
         });
 }
 
+bool GeneratorImpl::EmitConstant(std::ostream& out, const sem::Constant& constant) {
+    auto emit_bool = [&](size_t element_idx) {
+        out << (constant.Element<AInt>(element_idx) ? "true" : "false");
+        return true;
+    };
+    auto emit_f32 = [&](size_t element_idx) {
+        PrintF32(out, static_cast<float>(constant.Element<AFloat>(element_idx)));
+        return true;
+    };
+    auto emit_i32 = [&](size_t element_idx) {
+        PrintI32(out, static_cast<int32_t>(constant.Element<AInt>(element_idx).value));
+        return true;
+    };
+    auto emit_u32 = [&](size_t element_idx) {
+        out << constant.Element<AInt>(element_idx).value << "u";
+        return true;
+    };
+    auto emit_vector = [&](const sem::Vector* vec_ty, size_t start, size_t end) {
+        if (!EmitType(out, vec_ty, "")) {
+            return false;
+        }
+
+        ScopedParen sp(out);
+
+        auto emit_els = [&](auto emit_el) {
+            if (constant.AllEqual(start, end)) {
+                return emit_el(start);
+            }
+            for (size_t i = start; i < end; i++) {
+                if (i > start) {
+                    out << ", ";
+                }
+                if (!emit_el(i)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+        return Switch(
+            vec_ty->type(),                                         //
+            [&](const sem::Bool*) { return emit_els(emit_bool); },  //
+            [&](const sem::F32*) { return emit_els(emit_f32); },    //
+            [&](const sem::I32*) { return emit_els(emit_i32); },    //
+            [&](const sem::U32*) { return emit_els(emit_u32); },    //
+            [&](Default) {
+                diagnostics_.add_error(diag::System::Writer,
+                                       "unhandled constant vector element type: " +
+                                           builder_.FriendlyName(vec_ty->type()));
+                return false;
+            });
+    };
+    auto emit_matrix = [&](const sem::Matrix* m) {
+        if (!EmitType(out, constant.Type(), "")) {
+            return false;
+        }
+
+        ScopedParen sp(out);
+
+        for (size_t column_idx = 0; column_idx < m->columns(); column_idx++) {
+            if (column_idx > 0) {
+                out << ", ";
+            }
+            size_t start = m->rows() * column_idx;
+            size_t end = m->rows() * (column_idx + 1);
+            if (!emit_vector(m->ColumnType(), start, end)) {
+                return false;
+            }
+        }
+        return true;
+    };
+    return Switch(
+        constant.Type(),                                                                   //
+        [&](const sem::Bool*) { return emit_bool(0); },                                    //
+        [&](const sem::F32*) { return emit_f32(0); },                                      //
+        [&](const sem::I32*) { return emit_i32(0); },                                      //
+        [&](const sem::U32*) { return emit_u32(0); },                                      //
+        [&](const sem::Vector* v) { return emit_vector(v, 0, constant.ElementCount()); },  //
+        [&](const sem::Matrix* m) { return emit_matrix(m); },                              //
+        [&](Default) {
+            diagnostics_.add_error(
+                diag::System::Writer,
+                "unhandled constant type: " + builder_.FriendlyName(constant.Type()));
+            return false;
+        });
+}
+
 bool GeneratorImpl::EmitLiteral(std::ostream& out, const ast::LiteralExpression* lit) {
     return Switch(
         lit,
@@ -1551,32 +1656,14 @@ bool GeneratorImpl::EmitLiteral(std::ostream& out, const ast::LiteralExpression*
             return true;
         },
         [&](const ast::FloatLiteralExpression* l) {
-            auto f32 = static_cast<float>(l->value);
-            if (std::isinf(f32)) {
-                out << (f32 >= 0 ? "INFINITY" : "-INFINITY");
-            } else if (std::isnan(f32)) {
-                out << "NAN";
-            } else {
-                out << FloatToString(f32) << "f";
-            }
+            PrintF32(out, static_cast<float>(l->value));
             return true;
         },
         [&](const ast::IntLiteralExpression* i) {
             switch (i->suffix) {
                 case ast::IntLiteralExpression::Suffix::kNone:
                 case ast::IntLiteralExpression::Suffix::kI: {
-                    // MSL (and C++) parse `-2147483648` as a `long` because it parses
-                    // unary minus and `2147483648` as separate tokens, and the latter
-                    // doesn't fit into an (32-bit) `int`. WGSL, OTOH, parses this as an
-                    // `i32`. To avoid issues with `long` to `int` casts, emit
-                    // `(2147483647 - 1)` instead, which ensures the expression type is
-                    // `int`.
-                    const auto int_min = std::numeric_limits<int32_t>::min();
-                    if (i->value == int_min) {
-                        out << "(" << int_min + 1 << " - 1)";
-                    } else {
-                        out << i->value;
-                    }
+                    PrintI32(out, static_cast<int32_t>(i->value));
                     return true;
                 }
                 case ast::IntLiteralExpression::Suffix::kU: {
@@ -1594,6 +1681,11 @@ bool GeneratorImpl::EmitLiteral(std::ostream& out, const ast::LiteralExpression*
 }
 
 bool GeneratorImpl::EmitExpression(std::ostream& out, const ast::Expression* expr) {
+    if (auto* sem = builder_.Sem().Get(expr)) {
+        if (auto constant = sem->ConstantValue()) {
+            return EmitConstant(out, constant);
+        }
+    }
     return Switch(
         expr,
         [&](const ast::IndexAccessorExpression* a) {  //
diff --git a/src/tint/writer/msl/generator_impl.h b/src/tint/writer/msl/generator_impl.h
index b7a202983e..21dee2848a 100644
--- a/src/tint/writer/msl/generator_impl.h
+++ b/src/tint/writer/msl/generator_impl.h
@@ -45,6 +45,7 @@
 // Forward declarations
 namespace tint::sem {
 class Call;
+class Constant;
 class Builtin;
 class TypeConstructor;
 class TypeConversion;
@@ -250,6 +251,11 @@ class GeneratorImpl : public TextGenerator {
     /// @param stmt the statement to emit
     /// @returns true if the statement was successfully emitted
     bool EmitIf(const ast::IfStatement* stmt);
+    /// Handles a constant value
+    /// @param out the output stream
+    /// @param constant the constant value to emit
+    /// @returns true if the constant value was successfully emitted
+    bool EmitConstant(std::ostream& out, const sem::Constant& constant);
     /// Handles a literal
     /// @param out the output of the expression stream
     /// @param lit the literal to emit
diff --git a/src/tint/writer/msl/generator_impl_builtin_texture_test.cc b/src/tint/writer/msl/generator_impl_builtin_texture_test.cc
index a78a255c5a..20813fabc6 100644
--- a/src/tint/writer/msl/generator_impl_builtin_texture_test.cc
+++ b/src/tint/writer/msl/generator_impl_builtin_texture_test.cc
@@ -184,7 +184,7 @@ std::string expected_texture_overload(ast::builtin::test::ValidTextureOverload o
         case ValidTextureOverload::kSampleGrad2dF32:
             return R"(texture.sample(sampler, float2(1.0f, 2.0f), gradient2d(float2(3.0f, 4.0f), float2(5.0f, 6.0f))))";
         case ValidTextureOverload::kSampleGrad2dOffsetF32:
-            return R"(texture.sample(sampler, float2(1.0f, 2.0f), gradient2d(float2(3.0f, 4.0f), float2(5.0f, 6.0f)), int2(7, 7)))";
+            return R"(texture.sample(sampler, float2(1.0f, 2.0f), gradient2d(float2(3.0f, 4.0f), float2(5.0f, 6.0f)), int2(7)))";
         case ValidTextureOverload::kSampleGrad2dArrayF32:
             return R"(texture.sample(sampler, float2(1.0f, 2.0f), 3, gradient2d(float2(4.0f, 5.0f), float2(6.0f, 7.0f))))";
         case ValidTextureOverload::kSampleGrad2dArrayOffsetF32:
diff --git a/src/tint/writer/msl/generator_impl_cast_test.cc b/src/tint/writer/msl/generator_impl_cast_test.cc
index 0eca1910ad..4b9e3f28d9 100644
--- a/src/tint/writer/msl/generator_impl_cast_test.cc
+++ b/src/tint/writer/msl/generator_impl_cast_test.cc
@@ -29,7 +29,7 @@ TEST_F(MslGeneratorImplTest, EmitExpression_Cast_Scalar) {
 
     std::stringstream out;
     ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.error();
-    EXPECT_EQ(out.str(), "float(1)");
+    EXPECT_EQ(out.str(), "1.0f");
 }
 
 TEST_F(MslGeneratorImplTest, EmitExpression_Cast_Vector) {
@@ -40,7 +40,7 @@ TEST_F(MslGeneratorImplTest, EmitExpression_Cast_Vector) {
 
     std::stringstream out;
     ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.error();
-    EXPECT_EQ(out.str(), "float3(int3(1, 2, 3))");
+    EXPECT_EQ(out.str(), "float3(1.0f, 2.0f, 3.0f)");
 }
 
 TEST_F(MslGeneratorImplTest, EmitExpression_Cast_IntMin) {
@@ -51,7 +51,7 @@ TEST_F(MslGeneratorImplTest, EmitExpression_Cast_IntMin) {
 
     std::stringstream out;
     ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.error();
-    EXPECT_EQ(out.str(), "uint((-2147483647 - 1))");
+    EXPECT_EQ(out.str(), "0u");
 }
 
 }  // namespace
diff --git a/src/tint/writer/msl/generator_impl_constructor_test.cc b/src/tint/writer/msl/generator_impl_constructor_test.cc
index fa2e1131a3..2fa85f01ce 100644
--- a/src/tint/writer/msl/generator_impl_constructor_test.cc
+++ b/src/tint/writer/msl/generator_impl_constructor_test.cc
@@ -67,7 +67,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Float) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("float(-0.000012f)"));
+    EXPECT_THAT(gen.result(), HasSubstr("-0.000012f"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Bool) {
@@ -76,7 +76,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Bool) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("bool(true)"));
+    EXPECT_THAT(gen.result(), HasSubstr("true"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Int) {
@@ -85,7 +85,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Int) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("int(-12345)"));
+    EXPECT_THAT(gen.result(), HasSubstr("-12345"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Uint) {
@@ -94,7 +94,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Uint) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("uint(12345u)"));
+    EXPECT_THAT(gen.result(), HasSubstr("12345u"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Vec) {
@@ -112,7 +112,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Vec_Empty) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("float3()"));
+    EXPECT_THAT(gen.result(), HasSubstr("float3(0.0f)"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Mat) {
@@ -134,7 +134,7 @@ TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Mat_Empty) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("float4x4()"));
+    EXPECT_THAT(gen.result(), HasSubstr("float4x4(float4(0.0f), float4(0.0f)"));
 }
 
 TEST_F(MslGeneratorImplTest, EmitConstructor_Type_Array) {
diff --git a/src/tint/writer/msl/generator_impl_function_test.cc b/src/tint/writer/msl/generator_impl_function_test.cc
index 5eb4905179..585e8fcf9d 100644
--- a/src/tint/writer/msl/generator_impl_function_test.cc
+++ b/src/tint/writer/msl/generator_impl_function_test.cc
@@ -207,7 +207,7 @@ struct tint_symbol {
 };
 
 Interface vert_main_inner() {
-  Interface const tint_symbol_3 = {.col1=0.5f, .col2=0.25f, .pos=float4()};
+  Interface const tint_symbol_3 = {.col1=0.5f, .col2=0.25f, .pos=float4(0.0f)};
   return tint_symbol_3;
 }
 
diff --git a/src/tint/writer/msl/generator_impl_test.cc b/src/tint/writer/msl/generator_impl_test.cc
index dd90715bd4..7cef268419 100644
--- a/src/tint/writer/msl/generator_impl_test.cc
+++ b/src/tint/writer/msl/generator_impl_test.cc
@@ -157,7 +157,7 @@ struct tint_symbol_3 {
 
 void comp_main_inner(uint local_invocation_index, threadgroup float2x2* const tint_symbol) {
   {
-    *(tint_symbol) = float2x2();
+    *(tint_symbol) = float2x2(float2(0.0f), float2(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   float2x2 const x = *(tint_symbol);
@@ -199,7 +199,7 @@ struct tint_symbol_3 {
 void comp_main_inner(uint local_invocation_index, threadgroup tint_array_wrapper* const tint_symbol) {
   for(uint idx = local_invocation_index; (idx < 4u); idx = (idx + 1u)) {
     uint const i = idx;
-    (*(tint_symbol)).arr[i] = float2x2();
+    (*(tint_symbol)).arr[i] = float2x2(float2(0.0f), float2(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   tint_array_wrapper const x = *(tint_symbol);
@@ -333,9 +333,9 @@ struct tint_symbol_23 {
 
 void main1_inner(uint local_invocation_index, threadgroup float2x2* const tint_symbol, threadgroup float2x3* const tint_symbol_1, threadgroup float2x4* const tint_symbol_2) {
   {
-    *(tint_symbol) = float2x2();
-    *(tint_symbol_1) = float2x3();
-    *(tint_symbol_2) = float2x4();
+    *(tint_symbol) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_1) = float2x3(float3(0.0f), float3(0.0f));
+    *(tint_symbol_2) = float2x4(float4(0.0f), float4(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   float2x2 const a1 = *(tint_symbol);
@@ -353,9 +353,9 @@ kernel void main1(threadgroup tint_symbol_7* tint_symbol_4 [[threadgroup(0)]], u
 
 void main2_inner(uint local_invocation_index_1, threadgroup float3x2* const tint_symbol_8, threadgroup float3x3* const tint_symbol_9, threadgroup float3x4* const tint_symbol_10) {
   {
-    *(tint_symbol_8) = float3x2();
-    *(tint_symbol_9) = float3x3();
-    *(tint_symbol_10) = float3x4();
+    *(tint_symbol_8) = float3x2(float2(0.0f), float2(0.0f), float2(0.0f));
+    *(tint_symbol_9) = float3x3(float3(0.0f), float3(0.0f), float3(0.0f));
+    *(tint_symbol_10) = float3x4(float4(0.0f), float4(0.0f), float4(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   float3x2 const a1 = *(tint_symbol_8);
@@ -373,9 +373,9 @@ kernel void main2(threadgroup tint_symbol_15* tint_symbol_12 [[threadgroup(0)]],
 
 void main3_inner(uint local_invocation_index_2, threadgroup float4x2* const tint_symbol_16, threadgroup float4x3* const tint_symbol_17, threadgroup float4x4* const tint_symbol_18) {
   {
-    *(tint_symbol_16) = float4x2();
-    *(tint_symbol_17) = float4x3();
-    *(tint_symbol_18) = float4x4();
+    *(tint_symbol_16) = float4x2(float2(0.0f), float2(0.0f), float2(0.0f), float2(0.0f));
+    *(tint_symbol_17) = float4x3(float3(0.0f), float3(0.0f), float3(0.0f), float3(0.0f));
+    *(tint_symbol_18) = float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   float4x2 const a1 = *(tint_symbol_16);
diff --git a/src/tint/writer/msl/generator_impl_variable_decl_statement_test.cc b/src/tint/writer/msl/generator_impl_variable_decl_statement_test.cc
index be55cae289..e41cc3b281 100644
--- a/src/tint/writer/msl/generator_impl_variable_decl_statement_test.cc
+++ b/src/tint/writer/msl/generator_impl_variable_decl_statement_test.cc
@@ -48,7 +48,7 @@ TEST_F(MslGeneratorImplTest, Emit_VariableDeclStatement_Const) {
     gen.increment_indent();
 
     ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error();
-    EXPECT_EQ(gen.result(), "  float const a = float();\n");
+    EXPECT_EQ(gen.result(), "  float const a = 0.0f;\n");
 }
 
 TEST_F(MslGeneratorImplTest, Emit_VariableDeclStatement_Array) {
@@ -132,7 +132,7 @@ TEST_F(MslGeneratorImplTest, Emit_VariableDeclStatement_Initializer_Private) {
     GeneratorImpl& gen = SanitizeAndBuild();
 
     ASSERT_TRUE(gen.Generate()) << gen.error();
-    EXPECT_THAT(gen.result(), HasSubstr("thread float tint_symbol_1 = initializer;\n"));
+    EXPECT_THAT(gen.result(), HasSubstr("thread float tint_symbol_1 = 0.0f;\n  float const tint_symbol = tint_symbol_1;\n  return;\n"));
 }
 
 TEST_F(MslGeneratorImplTest, Emit_VariableDeclStatement_Workgroup) {
@@ -158,7 +158,7 @@ TEST_F(MslGeneratorImplTest, Emit_VariableDeclStatement_Initializer_ZeroVec) {
     GeneratorImpl& gen = Build();
 
     ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error();
-    EXPECT_EQ(gen.result(), R"(float3 a = float3();
+    EXPECT_EQ(gen.result(), R"(float3 a = float3(0.0f);
 )");
 }
 
diff --git a/test/tint/access/let/matrix.wgsl.expected.msl b/test/tint/access/let/matrix.wgsl.expected.msl
index f8f945d657..eecf61ae45 100644
--- a/test/tint/access/let/matrix.wgsl.expected.msl
+++ b/test/tint/access/let/matrix.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void tint_symbol() {
   float3x3 const m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
-  float3 const v = m[1];
+  float3 const v = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f))[1];
   float const f = v[1];
   return;
 }
diff --git a/test/tint/access/let/vector.wgsl.expected.msl b/test/tint/access/let/vector.wgsl.expected.msl
index 13a9b75adc..cffbb6801f 100644
--- a/test/tint/access/let/vector.wgsl.expected.msl
+++ b/test/tint/access/let/vector.wgsl.expected.msl
@@ -3,9 +3,9 @@
 using namespace metal;
 kernel void tint_symbol() {
   float3 const v = float3(1.0f, 2.0f, 3.0f);
-  float const scalar = v[1];
-  float2 const swizzle2 = float3(v).xz;
-  float3 const swizzle3 = float3(v).xzy;
+  float const scalar = float3(1.0f, 2.0f, 3.0f)[1];
+  float2 const swizzle2 = float3(float3(1.0f, 2.0f, 3.0f)).xz;
+  float3 const swizzle3 = float3(float3(1.0f, 2.0f, 3.0f)).xzy;
   return;
 }
 
diff --git a/test/tint/access/var/matrix.spvasm.expected.msl b/test/tint/access/var/matrix.spvasm.expected.msl
index 818eb61690..753587d92e 100644
--- a/test/tint/access/var/matrix.spvasm.expected.msl
+++ b/test/tint/access/var/matrix.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void main_1() {
-  float3x3 m = float3x3();
+  float3x3 m = float3x3(float3(0.0f), float3(0.0f), float3(0.0f));
   float3 const x_15 = m[1];
   float const x_16 = x_15[1];
   return;
diff --git a/test/tint/access/var/vector.spvasm.expected.msl b/test/tint/access/var/vector.spvasm.expected.msl
index 2f18abfd3f..fa7b3bcddf 100644
--- a/test/tint/access/var/vector.spvasm.expected.msl
+++ b/test/tint/access/var/vector.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void main_1() {
-  float3 v = float3();
+  float3 v = float3(0.0f);
   float const x_14 = v[1];
   float3 const x_16 = v;
   float2 const x_17 = float2(x_16[0], x_16[2]);
diff --git a/test/tint/array/type_constructor.wgsl.expected.msl b/test/tint/array/type_constructor.wgsl.expected.msl
index bd40591acd..092ccee288 100644
--- a/test/tint/array/type_constructor.wgsl.expected.msl
+++ b/test/tint/array/type_constructor.wgsl.expected.msl
@@ -21,7 +21,7 @@ kernel void tint_symbol() {
   int const x = 42;
   tint_array_wrapper const empty = {.arr={}};
   tint_array_wrapper const nonempty = {.arr={1, 2, 3, 4}};
-  tint_array_wrapper const nonempty_with_expr = {.arr={1, x, as_type<int>((as_type<uint>(x) + as_type<uint>(1))), nonempty.arr[3]}};
+  tint_array_wrapper const nonempty_with_expr = {.arr={1, 42, as_type<int>((as_type<uint>(42) + as_type<uint>(1))), nonempty.arr[3]}};
   tint_array_wrapper_1 const nested_empty = {.arr={}};
   tint_array_wrapper const tint_symbol_1 = {.arr={1, 2, 3, 4}};
   tint_array_wrapper const tint_symbol_2 = {.arr={5, 6, 7, 8}};
@@ -32,7 +32,7 @@ kernel void tint_symbol() {
   tint_array_wrapper const tint_symbol_7 = {.arr={21, 22, 23, 24}};
   tint_array_wrapper_2 const tint_symbol_8 = {.arr={tint_symbol_5, tint_symbol_6, tint_symbol_7}};
   tint_array_wrapper_1 const nested_nonempty = {.arr={tint_symbol_4, tint_symbol_8}};
-  tint_array_wrapper const tint_symbol_9 = {.arr={1, 2, x, as_type<int>((as_type<uint>(x) + as_type<uint>(1)))}};
+  tint_array_wrapper const tint_symbol_9 = {.arr={1, 2, 42, as_type<int>((as_type<uint>(42) + as_type<uint>(1)))}};
   tint_array_wrapper const tint_symbol_10 = {.arr={5, 6, nonempty.arr[2], as_type<int>((as_type<uint>(nonempty.arr[3]) + as_type<uint>(1)))}};
   tint_array_wrapper_2 const tint_symbol_11 = {.arr={tint_symbol_9, tint_symbol_10, nonempty}};
   tint_array_wrapper_1 const nested_nonempty_with_expr = {.arr={tint_symbol_11, nested_nonempty.arr[1]}};
@@ -40,7 +40,7 @@ kernel void tint_symbol() {
   int const subexpr_empty = tint_symbol_12.arr[1];
   tint_array_wrapper const tint_symbol_13 = {.arr={1, 2, 3, 4}};
   int const subexpr_nonempty = tint_symbol_13.arr[2];
-  tint_array_wrapper const tint_symbol_14 = {.arr={1, x, as_type<int>((as_type<uint>(x) + as_type<uint>(1))), nonempty.arr[3]}};
+  tint_array_wrapper const tint_symbol_14 = {.arr={1, 42, as_type<int>((as_type<uint>(42) + as_type<uint>(1))), nonempty.arr[3]}};
   int const subexpr_nonempty_with_expr = tint_symbol_14.arr[2];
   tint_array_wrapper_3 const tint_symbol_15 = {.arr={}};
   tint_array_wrapper const subexpr_nested_empty = tint_symbol_15.arr[1];
@@ -48,7 +48,7 @@ kernel void tint_symbol() {
   tint_array_wrapper const tint_symbol_17 = {.arr={5, 6, 7, 8}};
   tint_array_wrapper_3 const tint_symbol_18 = {.arr={tint_symbol_16, tint_symbol_17}};
   tint_array_wrapper const subexpr_nested_nonempty = tint_symbol_18.arr[1];
-  tint_array_wrapper const tint_symbol_19 = {.arr={1, x, as_type<int>((as_type<uint>(x) + as_type<uint>(1))), nonempty.arr[3]}};
+  tint_array_wrapper const tint_symbol_19 = {.arr={1, 42, as_type<int>((as_type<uint>(42) + as_type<uint>(1))), nonempty.arr[3]}};
   tint_array_wrapper_3 const tint_symbol_20 = {.arr={tint_symbol_19, nested_nonempty.arr[1].arr[2]}};
   tint_array_wrapper const subexpr_nested_nonempty_with_expr = tint_symbol_20.arr[1];
   return;
diff --git a/test/tint/buffer/storage/dynamic_index/write.wgsl.expected.msl b/test/tint/buffer/storage/dynamic_index/write.wgsl.expected.msl
index d2debe94f0..291f5a976e 100644
--- a/test/tint/buffer/storage/dynamic_index/write.wgsl.expected.msl
+++ b/test/tint/buffer/storage/dynamic_index/write.wgsl.expected.msl
@@ -34,14 +34,14 @@ struct S {
 };
 
 void tint_symbol_inner(uint idx, device S* const tint_symbol_2) {
-  (*(tint_symbol_2)).arr[idx].a = int3();
-  (*(tint_symbol_2)).arr[idx].b = int();
-  (*(tint_symbol_2)).arr[idx].c = uint3();
-  (*(tint_symbol_2)).arr[idx].d = uint();
-  (*(tint_symbol_2)).arr[idx].e = float3();
-  (*(tint_symbol_2)).arr[idx].f = float();
-  (*(tint_symbol_2)).arr[idx].g = float2x3();
-  (*(tint_symbol_2)).arr[idx].h = float3x2();
+  (*(tint_symbol_2)).arr[idx].a = int3(0);
+  (*(tint_symbol_2)).arr[idx].b = 0;
+  (*(tint_symbol_2)).arr[idx].c = uint3(0u);
+  (*(tint_symbol_2)).arr[idx].d = 0u;
+  (*(tint_symbol_2)).arr[idx].e = float3(0.0f);
+  (*(tint_symbol_2)).arr[idx].f = 0.0f;
+  (*(tint_symbol_2)).arr[idx].g = float2x3(float3(0.0f), float3(0.0f));
+  (*(tint_symbol_2)).arr[idx].h = float3x2(float2(0.0f), float2(0.0f), float2(0.0f));
   tint_array_wrapper const tint_symbol_1 = {.arr={}};
   (*(tint_symbol_2)).arr[idx].i = tint_symbol_1;
 }
diff --git a/test/tint/buffer/storage/static_index/write.wgsl.expected.msl b/test/tint/buffer/storage/static_index/write.wgsl.expected.msl
index 95b3ff2a9a..ae3ab6702c 100644
--- a/test/tint/buffer/storage/static_index/write.wgsl.expected.msl
+++ b/test/tint/buffer/storage/static_index/write.wgsl.expected.msl
@@ -35,14 +35,14 @@ struct S {
 };
 
 kernel void tint_symbol(device S* tint_symbol_3 [[buffer(0)]]) {
-  (*(tint_symbol_3)).a = int3();
-  (*(tint_symbol_3)).b = int();
-  (*(tint_symbol_3)).c = uint3();
-  (*(tint_symbol_3)).d = uint();
-  (*(tint_symbol_3)).e = float3();
-  (*(tint_symbol_3)).f = float();
-  (*(tint_symbol_3)).g = float2x3();
-  (*(tint_symbol_3)).h = float3x2();
+  (*(tint_symbol_3)).a = int3(0);
+  (*(tint_symbol_3)).b = 0;
+  (*(tint_symbol_3)).c = uint3(0u);
+  (*(tint_symbol_3)).d = 0u;
+  (*(tint_symbol_3)).e = float3(0.0f);
+  (*(tint_symbol_3)).f = 0.0f;
+  (*(tint_symbol_3)).g = float2x3(float3(0.0f), float3(0.0f));
+  (*(tint_symbol_3)).h = float3x2(float2(0.0f), float2(0.0f), float2(0.0f));
   Inner const tint_symbol_1 = {};
   (*(tint_symbol_3)).i = tint_symbol_1;
   tint_array_wrapper const tint_symbol_2 = {.arr={}};
diff --git a/test/tint/bug/chromium/1251009.wgsl.expected.msl b/test/tint/bug/chromium/1251009.wgsl.expected.msl
index 495192a98c..b0c0e2df4c 100644
--- a/test/tint/bug/chromium/1251009.wgsl.expected.msl
+++ b/test/tint/bug/chromium/1251009.wgsl.expected.msl
@@ -24,7 +24,7 @@ struct tint_symbol_3 {
 
 float4 tint_symbol_inner(VertexInputs0 inputs0, uint loc1, uint instance_index, VertexInputs1 inputs1) {
   uint const foo = (inputs0.vertex_index + instance_index);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_3 tint_symbol(uint vertex_index [[vertex_id]], uint instance_index [[instance_id]], tint_symbol_2 tint_symbol_1 [[stage_in]]) {
diff --git a/test/tint/bug/dawn/947.wgsl.expected.msl b/test/tint/bug/dawn/947.wgsl.expected.msl
index 56fe012034..f65b45138c 100644
--- a/test/tint/bug/dawn/947.wgsl.expected.msl
+++ b/test/tint/bug/dawn/947.wgsl.expected.msl
@@ -35,7 +35,7 @@ struct tint_array_wrapper {
 VertexOutputs vs_main_inner(uint VertexIndex, const constant Uniforms* const tint_symbol_5) {
   tint_array_wrapper texcoord = {.arr={float2(-0.5f, 0.0f), float2(1.5f, 0.0f), float2(0.5f, 2.0f)}};
   VertexOutputs output = {};
-  output.position = float4(((texcoord.arr[VertexIndex] * 2.0f) - float2(1.0f, 1.0f)), 0.0f, 1.0f);
+  output.position = float4(((texcoord.arr[VertexIndex] * 2.0f) - float2(1.0f)), 0.0f, 1.0f);
   bool flipY = ((*(tint_symbol_5)).u_scale[1] < 0.0f);
   if (flipY) {
     output.texcoords = ((((texcoord.arr[VertexIndex] * (*(tint_symbol_5)).u_scale) + (*(tint_symbol_5)).u_offset) * float2(1.0f, -1.0f)) + float2(0.0f, 1.0f));
@@ -62,10 +62,10 @@ struct tint_symbol_3 {
 };
 
 float4 fs_main_inner(float2 texcoord, thread bool* const tint_symbol_7, texture2d<float, access::sample> tint_symbol_8, sampler tint_symbol_9) {
-  float2 clampedTexcoord = clamp(texcoord, float2(0.0f, 0.0f), float2(1.0f, 1.0f));
+  float2 clampedTexcoord = clamp(texcoord, float2(0.0f), float2(1.0f));
   if (!(all((clampedTexcoord == texcoord)))) {
     *(tint_symbol_7) = true;
-    return float4();
+    return float4(0.0f);
   }
   float4 srcColor = tint_symbol_8.sample(tint_symbol_9, texcoord);
   return srcColor;
diff --git a/test/tint/bug/fxc/dyn_array_idx/read/workgroup.wgsl.expected.msl b/test/tint/bug/fxc/dyn_array_idx/read/workgroup.wgsl.expected.msl
index b4746d6aab..2566aba851 100644
--- a/test/tint/bug/fxc/dyn_array_idx/read/workgroup.wgsl.expected.msl
+++ b/test/tint/bug/fxc/dyn_array_idx/read/workgroup.wgsl.expected.msl
@@ -20,7 +20,7 @@ struct Result {
 void f_inner(uint local_invocation_index, threadgroup S* const tint_symbol, device Result* const tint_symbol_1, const constant UBO* const tint_symbol_2) {
   for(uint idx = local_invocation_index; (idx < 64u); idx = (idx + 1u)) {
     uint const i = idx;
-    (*(tint_symbol)).data.arr[i] = int();
+    (*(tint_symbol)).data.arr[i] = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   (*(tint_symbol_1)).out = (*(tint_symbol)).data.arr[(*(tint_symbol_2)).dynamic_idx];
diff --git a/test/tint/bug/fxc/dyn_array_idx/write/workgroup.wgsl.expected.msl b/test/tint/bug/fxc/dyn_array_idx/write/workgroup.wgsl.expected.msl
index 1f436cd970..2a339670f6 100644
--- a/test/tint/bug/fxc/dyn_array_idx/write/workgroup.wgsl.expected.msl
+++ b/test/tint/bug/fxc/dyn_array_idx/write/workgroup.wgsl.expected.msl
@@ -20,7 +20,7 @@ struct Result {
 void f_inner(uint local_invocation_index, threadgroup S* const tint_symbol, const constant UBO* const tint_symbol_1, device Result* const tint_symbol_2) {
   for(uint idx = local_invocation_index; (idx < 64u); idx = (idx + 1u)) {
     uint const i = idx;
-    (*(tint_symbol)).data.arr[i] = int();
+    (*(tint_symbol)).data.arr[i] = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   (*(tint_symbol)).data.arr[(*(tint_symbol_1)).dynamic_idx] = 1;
diff --git a/test/tint/bug/tint/1081.wgsl.expected.msl b/test/tint/bug/tint/1081.wgsl.expected.msl
index 8304df1281..ab68f60916 100644
--- a/test/tint/bug/tint/1081.wgsl.expected.msl
+++ b/test/tint/bug/tint/1081.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 int f(int x, thread bool* const tint_symbol_5) {
   if ((x == 10)) {
     *(tint_symbol_5) = true;
-    return int();
+    return 0;
   }
   return x;
 }
@@ -22,7 +22,7 @@ int tint_symbol_inner(int3 x, thread bool* const tint_symbol_6) {
   while (true) {
     int const r = f(y, tint_symbol_6);
     if (*(tint_symbol_6)) {
-      return int();
+      return 0;
     }
     if ((r == 0)) {
       break;
diff --git a/test/tint/bug/tint/1083.wgsl.expected.msl b/test/tint/bug/tint/1083.wgsl.expected.msl
index 08beb2b6ee..9a9ac978fa 100644
--- a/test/tint/bug/tint/1083.wgsl.expected.msl
+++ b/test/tint/bug/tint/1083.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 0;
-  int const c = (a / b);
+  int const c = (1 / 0);
   return;
 }
 
diff --git a/test/tint/bug/tint/1118.wgsl.expected.msl b/test/tint/bug/tint/1118.wgsl.expected.msl
index 6e7d1f60f1..aae4313b81 100644
--- a/test/tint/bug/tint/1118.wgsl.expected.msl
+++ b/test/tint/bug/tint/1118.wgsl.expected.msl
@@ -68,25 +68,25 @@ void main_1(thread float* const tint_symbol_7, thread bool* const tint_symbol_8,
     return;
   }
   float4 const x_34 = (*(tint_symbol_10)).vEyePosition;
-  float3 const x_38 = float3(0.0f, 0.0f, 0.0f);
-  viewDirectionW = normalize((float3(x_34[0], x_34[1], x_34[2]) - x_38));
-  baseColor = float4(1.0f, 1.0f, 1.0f, 1.0f);
+  float3 const x_38 = float3(0.0f);
+  viewDirectionW = normalize((float3(x_34[0], x_34[1], x_34[2]) - float3(0.0f)));
+  baseColor = float4(1.0f);
   float4 const x_52 = (*(tint_symbol_11)).vDiffuseColor;
   diffuseColor = float3(x_52[0], x_52[1], x_52[2]);
   float const x_60 = (*(tint_symbol_11)).vDiffuseColor[3];
   alpha = x_60;
-  float3 const x_62 = float3(0.0f, 0.0f, 0.0f);
-  float3 const x_64 = float3(0.0f, 0.0f, 0.0f);
-  normalW = normalize(-(cross(dfdx(x_62), dfdy(x_64))));
-  uvOffset = float2(0.0f, 0.0f);
-  float4 const x_74 = float4(0.0f, 0.0f, 0.0f, 0.0f);
+  float3 const x_62 = float3(0.0f);
+  float3 const x_64 = float3(0.0f);
+  normalW = normalize(-(cross(dfdx(float3(0.0f)), dfdy(float3(0.0f)))));
+  uvOffset = float2(0.0f);
+  float4 const x_74 = float4(0.0f);
   float4 const x_76 = baseColor;
-  float3 const x_78 = (float3(x_76[0], x_76[1], x_76[2]) * float3(x_74[0], x_74[1], x_74[2]));
+  float3 const x_78 = (float3(x_76[0], x_76[1], x_76[2]) * float3(float4(0.0f)[0], float4(0.0f)[1], float4(0.0f)[2]));
   float4 const x_79 = baseColor;
   baseColor = float4(x_78[0], x_78[1], x_78[2], x_79[3]);
-  baseAmbientColor = float3(1.0f, 1.0f, 1.0f);
+  baseAmbientColor = float3(1.0f);
   glossiness = 0.0f;
-  diffuseBase = float3(0.0f, 0.0f, 0.0f);
+  diffuseBase = float3(0.0f);
   shadow = 1.0f;
   refractionColor = float4(0.0f, 0.0f, 0.0f, 1.0f);
   reflectionColor = float4(0.0f, 0.0f, 0.0f, 1.0f);
@@ -97,8 +97,8 @@ void main_1(thread float* const tint_symbol_7, thread bool* const tint_symbol_8,
   float3 const x_99 = emissiveColor;
   float3 const x_103 = (*(tint_symbol_11)).vAmbientColor;
   float4 const x_108 = baseColor;
-  finalDiffuse = (clamp((((x_96 * x_97) + x_99) + x_103), float3(0.0f, 0.0f, 0.0f), float3(1.0f, 1.0f, 1.0f)) * float3(x_108[0], x_108[1], x_108[2]));
-  finalSpecular = float3(0.0f, 0.0f, 0.0f);
+  finalDiffuse = (clamp((((x_96 * x_97) + x_99) + x_103), float3(0.0f), float3(1.0f)) * float3(x_108[0], x_108[1], x_108[2]));
+  finalSpecular = float3(0.0f);
   float3 const x_113 = finalDiffuse;
   float3 const x_114 = baseAmbientColor;
   float3 const x_116 = finalSpecular;
@@ -108,7 +108,7 @@ void main_1(thread float* const tint_symbol_7, thread bool* const tint_symbol_8,
   float const x_124 = alpha;
   color = float4(x_123[0], x_123[1], x_123[2], x_124);
   float4 const x_129 = color;
-  float3 const x_132 = fmax(float3(x_129[0], x_129[1], x_129[2]), float3(0.0f, 0.0f, 0.0f));
+  float3 const x_132 = fmax(float3(x_129[0], x_129[1], x_129[2]), float3(0.0f));
   float4 const x_133 = color;
   color = float4(x_132[0], x_132[1], x_132[2], x_133[3]);
   float const x_140 = (*(tint_symbol_12)).visibility;
diff --git a/test/tint/bug/tint/1121.wgsl.expected.msl b/test/tint/bug/tint/1121.wgsl.expected.msl
index 8ac140b799..4800aec103 100644
--- a/test/tint/bug/tint/1121.wgsl.expected.msl
+++ b/test/tint/bug/tint/1121.wgsl.expected.msl
@@ -84,11 +84,11 @@ void tint_symbol_inner(uint3 GlobalInvocationID, const constant Config* const ti
   int const TILE_SIZE = 16;
   int const TILE_COUNT_X = 2;
   int const TILE_COUNT_Y = 2;
-  for(int y_1 = 0; (y_1 < TILE_COUNT_Y); y_1 = as_type<int>((as_type<uint>(y_1) + as_type<uint>(1)))) {
-    for(int x_1 = 0; (x_1 < TILE_COUNT_X); x_1 = as_type<int>((as_type<uint>(x_1) + as_type<uint>(1)))) {
-      int2 tilePixel0Idx = int2(as_type<int>((as_type<uint>(x_1) * as_type<uint>(TILE_SIZE))), as_type<int>((as_type<uint>(y_1) * as_type<uint>(TILE_SIZE))));
+  for(int y_1 = 0; (y_1 < 2); y_1 = as_type<int>((as_type<uint>(y_1) + as_type<uint>(1)))) {
+    for(int x_1 = 0; (x_1 < 2); x_1 = as_type<int>((as_type<uint>(x_1) + as_type<uint>(1)))) {
+      int2 tilePixel0Idx = int2(as_type<int>((as_type<uint>(x_1) * as_type<uint>(16))), as_type<int>((as_type<uint>(y_1) * as_type<uint>(16))));
       float2 floorCoord = (((2.0f * float2(tilePixel0Idx)) / float4((*(tint_symbol_3)).fullScreenSize).xy) - float2(1.0f));
-      float2 ceilCoord = (((2.0f * float2(as_type<int2>((as_type<uint2>(tilePixel0Idx) + as_type<uint2>(int2(TILE_SIZE)))))) / float4((*(tint_symbol_3)).fullScreenSize).xy) - float2(1.0f));
+      float2 ceilCoord = (((2.0f * float2(as_type<int2>((as_type<uint2>(tilePixel0Idx) + as_type<uint2>(int2(16)))))) / float4((*(tint_symbol_3)).fullScreenSize).xy) - float2(1.0f));
       float2 viewFloorCoord = float2((((-(viewNear) * floorCoord[0]) - (M[2][0] * viewNear)) / M[0][0]), (((-(viewNear) * floorCoord[1]) - (M[2][1] * viewNear)) / M[1][1]));
       float2 viewCeilCoord = float2((((-(viewNear) * ceilCoord[0]) - (M[2][0] * viewNear)) / M[0][0]), (((-(viewNear) * ceilCoord[1]) - (M[2][1] * viewNear)) / M[1][1]));
       frustumPlanes.arr[0] = float4(1.0f, 0.0f, (-(viewFloorCoord[0]) / viewNear), 0.0f);
@@ -117,7 +117,7 @@ void tint_symbol_inner(uint3 GlobalInvocationID, const constant Config* const ti
         dp = (dp + fmin(0.0f, dot(p, frustumPlanes.arr[i])));
       }
       if ((dp >= 0.0f)) {
-        uint tileId = uint(as_type<int>((as_type<uint>(x_1) + as_type<uint>(as_type<int>((as_type<uint>(y_1) * as_type<uint>(TILE_COUNT_X)))))));
+        uint tileId = uint(as_type<int>((as_type<uint>(x_1) + as_type<uint>(as_type<int>((as_type<uint>(y_1) * as_type<uint>(2)))))));
         if (((tileId < 0u) || (tileId >= (*(tint_symbol_1)).numTiles))) {
           continue;
         }
diff --git a/test/tint/bug/tint/1369.wgsl.expected.msl b/test/tint/bug/tint/1369.wgsl.expected.msl
index e5ce3962e6..4fc75b1fea 100644
--- a/test/tint/bug/tint/1369.wgsl.expected.msl
+++ b/test/tint/bug/tint/1369.wgsl.expected.msl
@@ -11,7 +11,7 @@ bug/tint/1369.wgsl:9:9 warning: code is unreachable
 using namespace metal;
 bool call_discard(thread bool* const tint_symbol) {
   *(tint_symbol) = true;
-  return bool();
+  return false;
   return true;
 }
 
diff --git a/test/tint/bug/tint/1520.spvasm.expected.msl b/test/tint/bug/tint/1520.spvasm.expected.msl
index 3e2b30a23b..909a0521fc 100644
--- a/test/tint/bug/tint/1520.spvasm.expected.msl
+++ b/test/tint/bug/tint/1520.spvasm.expected.msl
@@ -26,20 +26,20 @@ bool test_int_S1_c0_b(const constant UniformBuffer* const tint_symbol_5) {
   ok = true;
   x_41_phi = false;
   if (true) {
-    x_40 = all(((int4(0, 0, 0, 0) / int4(x_27, x_27, x_27, x_27)) == int4(0, 0, 0, 0)));
+    x_40 = all(((int4(0) / int4(x_27, x_27, x_27, x_27)) == int4(0)));
     x_41_phi = x_40;
   }
   bool const x_41 = x_41_phi;
   ok = x_41;
   int4 const x_44 = int4(x_27, x_27, x_27, x_27);
   val = x_44;
-  int4 const x_47 = as_type<int4>((as_type<uint4>(x_44) + as_type<uint4>(int4(1, 1, 1, 1))));
+  int4 const x_47 = as_type<int4>((as_type<uint4>(x_44) + as_type<uint4>(int4(1))));
   val = x_47;
-  int4 const x_48 = as_type<int4>((as_type<uint4>(x_47) - as_type<uint4>(int4(1, 1, 1, 1))));
+  int4 const x_48 = as_type<int4>((as_type<uint4>(x_47) - as_type<uint4>(int4(1))));
   val = x_48;
-  int4 const x_49 = as_type<int4>((as_type<uint4>(x_48) + as_type<uint4>(int4(1, 1, 1, 1))));
+  int4 const x_49 = as_type<int4>((as_type<uint4>(x_48) + as_type<uint4>(int4(1))));
   val = x_49;
-  int4 const x_50 = as_type<int4>((as_type<uint4>(x_49) - as_type<uint4>(int4(1, 1, 1, 1))));
+  int4 const x_50 = as_type<int4>((as_type<uint4>(x_49) - as_type<uint4>(int4(1))));
   val = x_50;
   x_55_phi = false;
   if (x_41) {
@@ -48,13 +48,13 @@ bool test_int_S1_c0_b(const constant UniformBuffer* const tint_symbol_5) {
   }
   bool const x_55 = x_55_phi;
   ok = x_55;
-  int4 const x_58 = as_type<int4>((as_type<uint4>(x_50) * as_type<uint4>(int4(2, 2, 2, 2))));
+  int4 const x_58 = as_type<int4>((as_type<uint4>(x_50) * as_type<uint4>(int4(2))));
   val = x_58;
-  int4 const x_59 = (x_58 / int4(2, 2, 2, 2));
+  int4 const x_59 = (x_58 / int4(2));
   val = x_59;
-  int4 const x_60 = as_type<int4>((as_type<uint4>(x_59) * as_type<uint4>(int4(2, 2, 2, 2))));
+  int4 const x_60 = as_type<int4>((as_type<uint4>(x_59) * as_type<uint4>(int4(2))));
   val = x_60;
-  int4 const x_61 = (x_60 / int4(2, 2, 2, 2));
+  int4 const x_61 = (x_60 / int4(2));
   val = x_61;
   x_66_phi = false;
   if (x_55) {
@@ -88,20 +88,20 @@ void main_1(thread float4* const tint_symbol_6, const constant UniformBuffer* co
   x_9_ok = true;
   x_87_phi = false;
   if (true) {
-    x_86 = all(((float4(0.0f, 0.0f, 0.0f, 0.0f) / float4(x_77, x_77, x_77, x_77)) == float4(0.0f, 0.0f, 0.0f, 0.0f)));
+    x_86 = all(((float4(0.0f) / float4(x_77, x_77, x_77, x_77)) == float4(0.0f)));
     x_87_phi = x_86;
   }
   bool const x_87 = x_87_phi;
   x_9_ok = x_87;
   float4 const x_89 = float4(x_77, x_77, x_77, x_77);
   x_10_val = x_89;
-  float4 const x_92 = (x_89 + float4(1.0f, 1.0f, 1.0f, 1.0f));
+  float4 const x_92 = (x_89 + float4(1.0f));
   x_10_val = x_92;
-  float4 const x_93 = (x_92 - float4(1.0f, 1.0f, 1.0f, 1.0f));
+  float4 const x_93 = (x_92 - float4(1.0f));
   x_10_val = x_93;
-  float4 const x_94 = (x_93 + float4(1.0f, 1.0f, 1.0f, 1.0f));
+  float4 const x_94 = (x_93 + float4(1.0f));
   x_10_val = x_94;
-  float4 const x_95 = (x_94 - float4(1.0f, 1.0f, 1.0f, 1.0f));
+  float4 const x_95 = (x_94 - float4(1.0f));
   x_10_val = x_95;
   x_100_phi = false;
   if (x_87) {
@@ -110,13 +110,13 @@ void main_1(thread float4* const tint_symbol_6, const constant UniformBuffer* co
   }
   bool const x_100 = x_100_phi;
   x_9_ok = x_100;
-  float4 const x_103 = (x_95 * float4(2.0f, 2.0f, 2.0f, 2.0f));
+  float4 const x_103 = (x_95 * float4(2.0f));
   x_10_val = x_103;
-  float4 const x_104 = (x_103 / float4(2.0f, 2.0f, 2.0f, 2.0f));
+  float4 const x_104 = (x_103 / float4(2.0f));
   x_10_val = x_104;
-  float4 const x_105 = (x_104 * float4(2.0f, 2.0f, 2.0f, 2.0f));
+  float4 const x_105 = (x_104 * float4(2.0f));
   x_10_val = x_105;
-  float4 const x_106 = (x_105 / float4(2.0f, 2.0f, 2.0f, 2.0f));
+  float4 const x_106 = (x_105 / float4(2.0f));
   x_10_val = x_106;
   x_111_phi = false;
   if (x_100) {
diff --git a/test/tint/bug/tint/292.wgsl.expected.msl b/test/tint/bug/tint/292.wgsl.expected.msl
index 4874e057df..c1f9d496be 100644
--- a/test/tint/bug/tint/292.wgsl.expected.msl
+++ b/test/tint/bug/tint/292.wgsl.expected.msl
@@ -8,7 +8,7 @@ struct tint_symbol_1 {
 float4 tint_symbol_inner() {
   float3 light = float3(1.200000048f, 1.0f, 2.0f);
   float3 negative_light = -(light);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 tint_symbol() {
diff --git a/test/tint/bug/tint/403.wgsl.expected.msl b/test/tint/bug/tint/403.wgsl.expected.msl
index caff5f35ff..94e0fbe59d 100644
--- a/test/tint/bug/tint/403.wgsl.expected.msl
+++ b/test/tint/bug/tint/403.wgsl.expected.msl
@@ -22,7 +22,7 @@ float4 tint_symbol_inner(uint gl_VertexIndex, const constant vertexUniformBuffer
   float2x2 const x_23 = (*(tint_symbol_3)).transform1;
   float2x2 const x_28 = (*(tint_symbol_4)).transform2;
   uint const x_46 = gl_VertexIndex;
-  tint_array_wrapper const tint_symbol_2 = {.arr={float2(-1.0f, 1.0f), float2(1.0f, 1.0f), float2(-1.0f, -1.0f)}};
+  tint_array_wrapper const tint_symbol_2 = {.arr={float2(-1.0f, 1.0f), float2(1.0f), float2(-1.0f)}};
   indexable = tint_symbol_2;
   float2 const x_51 = indexable.arr[x_46];
   float2 const x_52 = (float2x2((x_23[0u] + x_28[0u]), (x_23[1u] + x_28[1u])) * x_51);
diff --git a/test/tint/bug/tint/413.spvasm.expected.msl b/test/tint/bug/tint/413.spvasm.expected.msl
index d62ec29d9f..244b34abf3 100644
--- a/test/tint/bug/tint/413.spvasm.expected.msl
+++ b/test/tint/bug/tint/413.spvasm.expected.msl
@@ -3,12 +3,12 @@
 using namespace metal;
 void main_1(texture2d<uint, access::sample> tint_symbol_1, texture2d<uint, access::write> tint_symbol_2) {
   uint4 srcValue = 0u;
-  uint4 const x_18 = tint_symbol_1.read(uint2(int2(0, 0)), 0);
+  uint4 const x_18 = tint_symbol_1.read(uint2(int2(0)), 0);
   srcValue = x_18;
   uint const x_22 = srcValue[0];
   srcValue[0] = (x_22 + as_type<uint>(1));
   uint4 const x_27 = srcValue;
-  tint_symbol_2.write(x_27, uint2(int2(0, 0)));
+  tint_symbol_2.write(x_27, uint2(int2(0)));
   return;
 }
 
diff --git a/test/tint/bug/tint/453.wgsl.expected.msl b/test/tint/bug/tint/453.wgsl.expected.msl
index d51ef16337..bde6be8511 100644
--- a/test/tint/bug/tint/453.wgsl.expected.msl
+++ b/test/tint/bug/tint/453.wgsl.expected.msl
@@ -3,12 +3,12 @@
 using namespace metal;
 kernel void tint_symbol(texture2d<uint, access::sample> tint_symbol_1 [[texture(0)]], texture2d<uint, access::write> tint_symbol_2 [[texture(1)]]) {
   uint4 srcValue = 0u;
-  uint4 const x_22 = tint_symbol_1.read(uint2(int2(0, 0)), 0);
+  uint4 const x_22 = tint_symbol_1.read(uint2(int2(0)), 0);
   srcValue = x_22;
   uint const x_24 = srcValue[0];
   uint const x_25 = (x_24 + 1u);
   uint4 const x_27 = srcValue;
-  tint_symbol_2.write(uint4(x_27).xxxx, uint2(int2(0, 0)));
+  tint_symbol_2.write(uint4(x_27).xxxx, uint2(int2(0)));
   return;
 }
 
diff --git a/test/tint/bug/tint/534.wgsl.expected.msl b/test/tint/bug/tint/534.wgsl.expected.msl
index 041713a79d..a766b37cb2 100644
--- a/test/tint/bug/tint/534.wgsl.expected.msl
+++ b/test/tint/bug/tint/534.wgsl.expected.msl
@@ -35,9 +35,9 @@ void tint_symbol_inner(uint3 GlobalInvocationID, texture2d<float, access::sample
   }
   uint outputIndex = ((GlobalInvocationID[1] * uint(size[0])) + GlobalInvocationID[0]);
   if (success) {
-    (*(tint_symbol_5)).result[outputIndex] = uint(1);
+    (*(tint_symbol_5)).result[outputIndex] = 1u;
   } else {
-    (*(tint_symbol_5)).result[outputIndex] = uint(0);
+    (*(tint_symbol_5)).result[outputIndex] = 0u;
   }
 }
 
diff --git a/test/tint/bug/tint/749.spvasm.expected.msl b/test/tint/bug/tint/749.spvasm.expected.msl
index 1349abdcd2..89108e5ea2 100644
--- a/test/tint/bug/tint/749.spvasm.expected.msl
+++ b/test/tint/bug/tint/749.spvasm.expected.msl
@@ -805,7 +805,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   int i_2 = 0;
   float2 uv = 0.0f;
   float2 const x_717 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_717;
   i_2 = 0;
   QuicksortObject const x_721 = *(tint_symbol_84);
@@ -822,10 +822,10 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     float2 const x_431 = float2(float3(1.0f, 2.0f, 3.0f)[0], float3(1.0f, 2.0f, 3.0f)[0]);
     int const x_158 = i_2;
     float2 const x_723 = uv;
-    uv = float2(0.0f, 0.0f);
+    uv = float2(0.0f);
     uv = x_723;
     float3 const x_725 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_725;
     float2 const x_432 = float2(x_431[1], x_431[1]);
     QuicksortObject const x_726 = *(tint_symbol_84);
@@ -839,7 +839,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   QuicksortObject const tint_symbol_43 = {.numbers=tint_symbol_42};
   *(tint_symbol_84) = tint_symbol_43;
   *(tint_symbol_84) = x_756;
-  float2 const x_446 = float2(float2()[0], float2()[0]);
+  float2 const x_446 = float2(float2(0.0f)[0], float2(0.0f)[0]);
   int const x_757 = i_2;
   i_2 = 0;
   i_2 = x_757;
@@ -851,11 +851,11 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   *(tint_symbol_84) = x_758;
   float4 const x_184 = *(tint_symbol_85);
   float2 const x_759 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_759;
-  float2 const x_447 = float2(float2()[1], float2()[1]);
+  float2 const x_447 = float2(float2(0.0f)[1], float2(0.0f)[1]);
   float2 const x_760 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_760;
   float2 const x_185 = float2(x_184[0], x_184[1]);
   float3 const x_448 = float3(x_185[1], x_446[1], x_446[1]);
@@ -865,7 +865,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   *(tint_symbol_84) = tint_symbol_47;
   *(tint_symbol_84) = x_761;
   float2 const x_762 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_762;
   float2 const x_191 = (*(tint_symbol_86)).resolution;
   QuicksortObject const x_763 = *(tint_symbol_84);
@@ -875,7 +875,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   *(tint_symbol_84) = x_763;
   float3 const x_449 = float3(x_184[1], float3(1.0f, 2.0f, 3.0f)[2], x_184[3]);
   float3 const x_764 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_764;
   float2 const x_192 = (x_185 / x_191);
   QuicksortObject const x_765 = *(tint_symbol_84);
@@ -885,15 +885,15 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   *(tint_symbol_84) = x_765;
   float2 const x_450 = float2(x_447[0], x_185[1]);
   float3 const x_766 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   float3 const x_767 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_767;
   color = x_766;
   uv = x_192;
   color = float3(1.0f, 2.0f, 3.0f);
   float3 const x_768 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_768;
   float3 const x_451 = float3(x_185[0], x_185[1], x_446[1]);
   QuicksortObject const x_769 = *(tint_symbol_84);
@@ -929,10 +929,10 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   float3 const x_453 = float3(x_451[0], x_450[0], x_450[1]);
   color[0] = (x_206 + float(x_201));
   float2 const x_776 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_776;
   float2 const x_777 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_777;
   float2 const x_454 = float2(x_184[1], x_184[1]);
   float const x_210 = uv[0];
@@ -952,7 +952,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     int const x_781 = (*(tint_symbol_84)).numbers.arr[0u];
     (*(tint_symbol_84)).numbers.arr[0u] = 0;
     (*(tint_symbol_84)).numbers.arr[0u] = x_781;
-    float3 const x_456 = float3(float2()[1], x_448[1], x_448[1]);
+    float3 const x_456 = float3(float2(0.0f)[1], x_448[1], x_448[1]);
     float const x_782 = uv[0];
     uv[0] = 0.0f;
     uv[0] = x_782;
@@ -964,14 +964,14 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     *(tint_symbol_84) = x_783;
     float2 const x_457 = float2(x_454[0], x_454[0]);
     float2 const x_784 = uv;
-    uv = float2(0.0f, 0.0f);
+    uv = float2(0.0f);
     uv = x_784;
     QuicksortObject const x_785 = *(tint_symbol_84);
     tint_array_wrapper const tint_symbol_62 = {.arr={0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};
     QuicksortObject const tint_symbol_63 = {.numbers=tint_symbol_62};
     *(tint_symbol_84) = tint_symbol_63;
     *(tint_symbol_84) = x_785;
-    float2 const x_458 = float2(float3(1.0f, 2.0f, 3.0f)[2], float2()[1]);
+    float2 const x_458 = float2(float3(1.0f, 2.0f, 3.0f)[2], float2(0.0f)[1]);
     int const x_786 = i_2;
     i_2 = 0;
     i_2 = x_786;
@@ -980,10 +980,10 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     color[0] = 0.0f;
     color[0] = x_787;
     float3 const x_788 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_788;
     float3 const x_789 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_789;
     float3 const x_459 = float3(x_454[1], x_454[1], x_447[1]);
     float const x_790 = color[0];
@@ -1006,12 +1006,12 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   uv[0] = x_794;
   float3 const x_460 = float3(x_453[2], x_453[1], x_453[1]);
   float2 const x_795 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_795;
   float const x_796 = uv[0];
   uv[0] = 0.0f;
   uv[0] = x_796;
-  float2 const x_461 = float2(float2()[1], float2()[1]);
+  float2 const x_461 = float2(float2(0.0f)[1], float2(0.0f)[1]);
   float const x_797 = uv[0];
   uv[0] = 0.0f;
   uv[0] = x_797;
@@ -1055,7 +1055,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     int const x_808 = i_2;
     i_2 = 0;
     i_2 = x_808;
-    float2 const x_466 = float2(x_455[1], float2()[1]);
+    float2 const x_466 = float2(x_455[1], float2(0.0f)[1]);
     int const x_809 = i_2;
     i_2 = 0;
     i_2 = x_809;
@@ -1073,7 +1073,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   uv[0] = x_812;
   float const x_238 = uv[0];
   float3 const x_813 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_813;
   float const x_814 = color[0];
   color[0] = 0.0f;
@@ -1100,7 +1100,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     uv[0] = x_819;
     float const x_249 = color[2];
     float3 const x_820 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_820;
     float3 const x_469 = float3(x_467[0], x_191[1], x_467[1]);
     float const x_821 = color[2];
@@ -1109,13 +1109,13 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     int const x_822 = (*(tint_symbol_84)).numbers.arr[0u];
     (*(tint_symbol_84)).numbers.arr[0u] = 0;
     (*(tint_symbol_84)).numbers.arr[0u] = x_822;
-    float2 const x_470 = float2(float2()[0], float2()[1]);
+    float2 const x_470 = float2(float2(0.0f)[0], float2(0.0f)[1]);
     float const x_823 = color[2];
     color[2] = 0.0f;
     color[2] = x_823;
     color[2] = (x_249 + float(x_245));
     float2 const x_824 = uv;
-    uv = float2(0.0f, 0.0f);
+    uv = float2(0.0f);
     uv = x_824;
     float2 const x_471 = float2(x_470[1], x_470[1]);
   }
@@ -1128,7 +1128,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   uv[0] = 0.0f;
   uv[0] = x_826;
   float3 const x_827 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_827;
   float3 const x_473 = float3(x_446[1], x_453[0], x_453[0]);
   int const x_828 = (*(tint_symbol_84)).numbers.arr[4];
@@ -1151,7 +1151,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   color[0] = x_832;
   float2 const x_476 = float2(x_451[2], x_460[1]);
   color[1] = (x_257 + float(x_254));
-  float3 const x_477 = float3(float2()[0], x_472[0], float2()[1]);
+  float3 const x_477 = float3(float2(0.0f)[0], x_472[0], float2(0.0f)[1]);
   float const x_833 = uv[0];
   uv[0] = 0.0f;
   uv[0] = x_833;
@@ -1166,21 +1166,21 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   int const x_836 = i_2;
   i_2 = 0;
   i_2 = x_836;
-  float3 const x_479 = float3(float2()[1], x_454[1], float2()[0]);
+  float3 const x_479 = float3(float2(0.0f)[1], x_454[1], float2(0.0f)[0]);
   int const x_837 = (*(tint_symbol_84)).numbers.arr[0u];
   (*(tint_symbol_84)).numbers.arr[0u] = 0;
   (*(tint_symbol_84)).numbers.arr[0u] = x_837;
   float const x_838 = color[1];
   color[1] = 0.0f;
   color[1] = x_838;
-  float3 const x_480 = float3(x_446[0], x_446[0], float2()[1]);
+  float3 const x_480 = float3(x_446[0], x_446[0], float2(0.0f)[1]);
   float const x_839 = uv[0];
   uv[0] = 0.0f;
   uv[0] = x_839;
   if ((x_261 > 0.25f)) {
     float2 const x_481 = float2(x_447[0], x_480[2]);
     float3 const x_840 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_840;
     int const x_267 = (*(tint_symbol_84)).numbers.arr[5u];
     float const x_841 = color[0];
@@ -1257,7 +1257,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     float2 const x_488 = float2(x_473[2], x_473[1]);
     float const x_283 = color[1];
     float2 const x_860 = uv;
-    uv = float2(0.0f, 0.0f);
+    uv = float2(0.0f);
     uv = x_860;
     float const x_861 = color[0];
     color[0] = 0.0f;
@@ -1307,14 +1307,14 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   (*(tint_symbol_84)).numbers.arr[4] = x_871;
   if ((x_287 > 0.75f)) {
     float3 const x_872 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_872;
     float const x_873 = color[0];
     color[0] = 0.0f;
     color[0] = x_873;
     float3 const x_495 = float3(x_192[1], x_192[0], x_192[1]);
     float3 const x_874 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_874;
     int const x_293 = (*(tint_symbol_84)).numbers.arr[7];
     float const x_875 = uv[0];
@@ -1367,7 +1367,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   i_2 = x_887;
   float2 const x_502 = float2(x_451[1], x_192[1]);
   float2 const x_888 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_888;
   int const x_301 = (*(tint_symbol_84)).numbers.arr[8];
   int const x_889 = i_2;
@@ -1380,7 +1380,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   float const x_891 = color[1];
   color[1] = 0.0f;
   color[1] = x_891;
-  float2 const x_504 = float2(x_453[1], float2()[0]);
+  float2 const x_504 = float2(x_453[1], float2(0.0f)[0]);
   float const x_892 = color[0];
   color[0] = 0.0f;
   color[0] = x_892;
@@ -1405,7 +1405,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   color[1] = x_897;
   color[2] = (x_304 + float(x_301));
   float2 const x_898 = uv;
-  uv = float2(0.0f, 0.0f);
+  uv = float2(0.0f);
   uv = x_898;
   float const x_899 = uv[0];
   uv[0] = 0.0f;
@@ -1438,7 +1438,7 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
   i_2 = x_906;
   float2 const x_511 = float2(x_485[2], x_485[1]);
   float3 const x_907 = color;
-  color = float3(0.0f, 0.0f, 0.0f);
+  color = float3(0.0f);
   color = x_907;
   float const x_908 = uv[1];
   uv[1] = 0.0f;
@@ -1474,16 +1474,16 @@ void main_1(thread QuicksortObject* const tint_symbol_84, thread float4* const t
     color[0] = 0.0f;
     color[0] = x_915;
     float3 const x_916 = color;
-    color = float3(0.0f, 0.0f, 0.0f);
+    color = float3(0.0f);
     color = x_916;
     float2 const x_516 = float2(x_452[0], x_452[0]);
     float2 const x_917 = uv;
-    uv = float2(0.0f, 0.0f);
+    uv = float2(0.0f);
     uv = x_917;
     float const x_918 = uv[0];
     uv[0] = 0.0f;
     uv[0] = x_918;
-    float3 const x_517 = float3(float2()[0], float2()[0], float2()[1]);
+    float3 const x_517 = float3(float2(0.0f)[0], float2(0.0f)[0], float2(0.0f)[1]);
     color[0] = (float(x_317) + x_320);
     float const x_919 = color[0];
     color[0] = 0.0f;
diff --git a/test/tint/bug/tint/764.wgsl.expected.msl b/test/tint/bug/tint/764.wgsl.expected.msl
index 18310523ea..f70d7447c4 100644
--- a/test/tint/bug/tint/764.wgsl.expected.msl
+++ b/test/tint/bug/tint/764.wgsl.expected.msl
@@ -2,8 +2,8 @@
 
 using namespace metal;
 void f() {
-  float4x4 const m = float4x4(float4(1.0f, 1.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f));
-  float4 const v1 = m[0];
+  float4x4 const m = float4x4(float4(1.0f), float4(1.0f), float4(1.0f), float4(1.0f));
+  float4 const v1 = float4x4(float4(1.0f), float4(1.0f), float4(1.0f), float4(1.0f))[0];
   float const a = v1[0];
 }
 
diff --git a/test/tint/bug/tint/824.wgsl.expected.msl b/test/tint/bug/tint/824.wgsl.expected.msl
index d5f6cb326a..c9a884c12f 100644
--- a/test/tint/bug/tint/824.wgsl.expected.msl
+++ b/test/tint/bug/tint/824.wgsl.expected.msl
@@ -20,11 +20,11 @@ struct tint_array_wrapper_1 {
 };
 
 Output tint_symbol_inner(uint VertexIndex, uint InstanceIndex) {
-  tint_array_wrapper const zv = {.arr={float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
+  tint_array_wrapper const zv = {.arr={float2(0.200000003f), float2(0.300000012f), float2(-0.100000001f), float2(1.100000024f)}};
   float const z = zv.arr[InstanceIndex][0];
   Output output = {};
   output.Position = float4(0.5f, 0.5f, z, 1.0f);
-  tint_array_wrapper_1 const colors = {.arr={float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
+  tint_array_wrapper_1 const colors = {.arr={float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f)}};
   output.color = colors.arr[InstanceIndex];
   return output;
 }
diff --git a/test/tint/bug/tint/825.wgsl.expected.msl b/test/tint/bug/tint/825.wgsl.expected.msl
index b3f1c1a150..0edd1b4f70 100644
--- a/test/tint/bug/tint/825.wgsl.expected.msl
+++ b/test/tint/bug/tint/825.wgsl.expected.msl
@@ -5,6 +5,6 @@ void f() {
   int i = 0;
   int j = 0;
   float2x2 const m = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f));
-  float const f_1 = m[i][j];
+  float const f_1 = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f))[i][j];
 }
 
diff --git a/test/tint/bug/tint/827.wgsl.expected.msl b/test/tint/bug/tint/827.wgsl.expected.msl
index 191dd2bb5d..532283a068 100644
--- a/test/tint/bug/tint/827.wgsl.expected.msl
+++ b/test/tint/bug/tint/827.wgsl.expected.msl
@@ -8,7 +8,7 @@ struct Result {
 constant uint width = 128u;
 
 void tint_symbol_inner(uint3 GlobalInvocationId, device Result* const tint_symbol_1, depth2d<float, access::sample> tint_symbol_2) {
-  (*(tint_symbol_1)).values[((GlobalInvocationId[1] * width) + GlobalInvocationId[0])] = tint_symbol_2.read(uint2(int2(int(GlobalInvocationId[0]), int(GlobalInvocationId[1]))), 0);
+  (*(tint_symbol_1)).values[((GlobalInvocationId[1] * 128u) + GlobalInvocationId[0])] = tint_symbol_2.read(uint2(int2(int(GlobalInvocationId[0]), int(GlobalInvocationId[1]))), 0);
 }
 
 kernel void tint_symbol(device Result* tint_symbol_3 [[buffer(0)]], depth2d<float, access::sample> tint_symbol_4 [[texture(0)]], uint3 GlobalInvocationId [[thread_position_in_grid]]) {
diff --git a/test/tint/bug/tint/913.wgsl.expected.msl b/test/tint/bug/tint/913.wgsl.expected.msl
index 5de26db32d..e326a9b101 100644
--- a/test/tint/bug/tint/913.wgsl.expected.msl
+++ b/test/tint/bug/tint/913.wgsl.expected.msl
@@ -24,7 +24,7 @@ void tint_symbol_inner(uint3 GlobalInvocationID, texture2d<float, access::sample
   float4 const nonCoveredColor = float4(0.0f, 1.0f, 0.0f, 1.0f);
   bool success = true;
   if (((((dstTexCoord[0] < (*(tint_symbol_9)).dstCopyOrigin[0]) || (dstTexCoord[1] < (*(tint_symbol_9)).dstCopyOrigin[1])) || (dstTexCoord[0] >= ((*(tint_symbol_9)).dstCopyOrigin[0] + (*(tint_symbol_9)).copySize[0]))) || (dstTexCoord[1] >= ((*(tint_symbol_9)).dstCopyOrigin[1] + (*(tint_symbol_9)).copySize[1])))) {
-    success = (success && all((tint_symbol_8.read(uint2(int2(dstTexCoord)), 0) == nonCoveredColor)));
+    success = (success && all((tint_symbol_8.read(uint2(int2(dstTexCoord)), 0) == float4(0.0f, 1.0f, 0.0f, 1.0f))));
   } else {
     uint2 srcTexCoord = ((dstTexCoord - (*(tint_symbol_9)).dstCopyOrigin) + (*(tint_symbol_9)).srcCopyOrigin);
     if (((*(tint_symbol_9)).dstTextureFlipY == 1u)) {
diff --git a/test/tint/bug/tint/914.wgsl.expected.msl b/test/tint/bug/tint/914.wgsl.expected.msl
index 2321c84bc2..c6aad932d7 100644
--- a/test/tint/bug/tint/914.wgsl.expected.msl
+++ b/test/tint/bug/tint/914.wgsl.expected.msl
@@ -64,60 +64,60 @@ void tint_symbol_inner(uint3 local_id, uint3 global_id, uint local_invocation_in
   for(uint idx = local_invocation_index; (idx < 4096u); idx = (idx + 256u)) {
     uint const i = (idx / 64u);
     uint const i_1 = (idx % 64u);
-    (*(tint_symbol_9)).arr[i].arr[i_1] = float();
-    (*(tint_symbol_10)).arr[i].arr[i_1] = float();
+    (*(tint_symbol_9)).arr[i].arr[i_1] = 0.0f;
+    (*(tint_symbol_10)).arr[i].arr[i_1] = 0.0f;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
-  uint const tileRow = (local_id[1] * RowPerThread);
-  uint const tileCol = (local_id[0] * ColPerThread);
-  uint const globalRow = (global_id[1] * RowPerThread);
-  uint const globalCol = (global_id[0] * ColPerThread);
-  uint const numTiles = ((((*(tint_symbol_11)).dimInner - 1u) / TileInner) + 1u);
+  uint const tileRow = (local_id[1] * 4u);
+  uint const tileCol = (local_id[0] * 4u);
+  uint const globalRow = (global_id[1] * 4u);
+  uint const globalCol = (global_id[0] * 4u);
+  uint const numTiles = ((((*(tint_symbol_11)).dimInner - 1u) / 64u) + 1u);
   tint_array_wrapper_2 acc = {};
   float ACached = 0.0f;
   tint_array_wrapper_3 BCached = {};
-  for(uint index = 0u; (index < (RowPerThread * ColPerThread)); index = (index + 1u)) {
+  for(uint index = 0u; (index < (4u * 4u)); index = (index + 1u)) {
     acc.arr[index] = 0.0f;
   }
-  uint const ColPerThreadA = (TileInner / 16u);
+  uint const ColPerThreadA = (64u / 16u);
   uint const tileColA = (local_id[0] * ColPerThreadA);
-  uint const RowPerThreadB = (TileInner / 16u);
+  uint const RowPerThreadB = (64u / 16u);
   uint const tileRowB = (local_id[1] * RowPerThreadB);
   for(uint t = 0u; (t < numTiles); t = (t + 1u)) {
-    for(uint innerRow = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
+    for(uint innerRow = 0u; (innerRow < 4u); innerRow = (innerRow + 1u)) {
       for(uint innerCol = 0u; (innerCol < ColPerThreadA); innerCol = (innerCol + 1u)) {
         uint const inputRow = (tileRow + innerRow);
         uint const inputCol = (tileColA + innerCol);
-        float const tint_symbol_1 = mm_readA((globalRow + innerRow), ((t * TileInner) + inputCol), tint_symbol_11, tint_symbol_12);
+        float const tint_symbol_1 = mm_readA((globalRow + innerRow), ((t * 64u) + inputCol), tint_symbol_11, tint_symbol_12);
         (*(tint_symbol_9)).arr[inputRow].arr[inputCol] = tint_symbol_1;
       }
     }
     for(uint innerRow = 0u; (innerRow < RowPerThreadB); innerRow = (innerRow + 1u)) {
-      for(uint innerCol = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
+      for(uint innerCol = 0u; (innerCol < 4u); innerCol = (innerCol + 1u)) {
         uint const inputRow = (tileRowB + innerRow);
         uint const inputCol = (tileCol + innerCol);
-        float const tint_symbol_2 = mm_readB(((t * TileInner) + inputRow), (globalCol + innerCol), tint_symbol_11, tint_symbol_13);
+        float const tint_symbol_2 = mm_readB(((t * 64u) + inputRow), (globalCol + innerCol), tint_symbol_11, tint_symbol_13);
         (*(tint_symbol_10)).arr[innerCol].arr[inputCol] = tint_symbol_2;
       }
     }
     threadgroup_barrier(mem_flags::mem_threadgroup);
-    for(uint k = 0u; (k < TileInner); k = (k + 1u)) {
-      for(uint inner = 0u; (inner < ColPerThread); inner = (inner + 1u)) {
+    for(uint k = 0u; (k < 64u); k = (k + 1u)) {
+      for(uint inner = 0u; (inner < 4u); inner = (inner + 1u)) {
         BCached.arr[inner] = (*(tint_symbol_10)).arr[k].arr[(tileCol + inner)];
       }
-      for(uint innerRow = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
+      for(uint innerRow = 0u; (innerRow < 4u); innerRow = (innerRow + 1u)) {
         ACached = (*(tint_symbol_9)).arr[(tileRow + innerRow)].arr[k];
-        for(uint innerCol = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
-          uint const index = ((innerRow * ColPerThread) + innerCol);
+        for(uint innerCol = 0u; (innerCol < 4u); innerCol = (innerCol + 1u)) {
+          uint const index = ((innerRow * 4u) + innerCol);
           acc.arr[index] = (acc.arr[index] + (ACached * BCached.arr[innerCol]));
         }
       }
     }
     threadgroup_barrier(mem_flags::mem_threadgroup);
   }
-  for(uint innerRow = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
-    for(uint innerCol = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
-      uint const index = ((innerRow * ColPerThread) + innerCol);
+  for(uint innerRow = 0u; (innerRow < 4u); innerRow = (innerRow + 1u)) {
+    for(uint innerCol = 0u; (innerCol < 4u); innerCol = (innerCol + 1u)) {
+      uint const index = ((innerRow * 4u) + innerCol);
       mm_write((globalRow + innerRow), (globalCol + innerCol), acc.arr[index], tint_symbol_11, tint_symbol_14);
     }
   }
diff --git a/test/tint/bug/tint/942.wgsl.expected.msl b/test/tint/bug/tint/942.wgsl.expected.msl
index 3127a423b6..6693f72d95 100644
--- a/test/tint/bug/tint/942.wgsl.expected.msl
+++ b/test/tint/bug/tint/942.wgsl.expected.msl
@@ -22,7 +22,7 @@ void tint_symbol_inner(uint3 WorkGroupID, uint3 LocalInvocationID, uint local_in
   for(uint idx = local_invocation_index; (idx < 1024u); idx = (idx + 64u)) {
     uint const i_1 = (idx / 256u);
     uint const i_2 = (idx % 256u);
-    (*(tint_symbol_1)).arr[i_1].arr[i_2] = float3();
+    (*(tint_symbol_1)).arr[i_1].arr[i_2] = float3(0.0f);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   uint const filterOffset = (((*(tint_symbol_2)).filterDim - 1u) / 2u);
@@ -34,7 +34,7 @@ void tint_symbol_inner(uint3 WorkGroupID, uint3 LocalInvocationID, uint local_in
       if (((*(tint_symbol_4)).value != 0u)) {
         loadIndex = int2(loadIndex).yx;
       }
-      (*(tint_symbol_1)).arr[r].arr[((4u * LocalInvocationID[0]) + c)] = float4(tint_symbol_3.sample(tint_symbol_5, ((float2(loadIndex) + float2(0.25f, 0.25f)) / float2(dims)), level(0.0f))).rgb;
+      (*(tint_symbol_1)).arr[r].arr[((4u * LocalInvocationID[0]) + c)] = float4(tint_symbol_3.sample(tint_symbol_5, ((float2(loadIndex) + float2(0.25f)) / float2(dims)), level(0.0f))).rgb;
     }
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
@@ -46,7 +46,7 @@ void tint_symbol_inner(uint3 WorkGroupID, uint3 LocalInvocationID, uint local_in
       }
       uint const center = ((4u * LocalInvocationID[0]) + c);
       if ((((center >= filterOffset) && (center < (256u - filterOffset))) && all((writeIndex < dims)))) {
-        float3 acc = float3(0.0f, 0.0f, 0.0f);
+        float3 acc = float3(0.0f);
         for(uint f = 0u; (f < (*(tint_symbol_2)).filterDim); f = (f + 1u)) {
           uint i = ((center + f) - filterOffset);
           acc = (acc + ((1.0f / float((*(tint_symbol_2)).filterDim)) * (*(tint_symbol_1)).arr[r].arr[i]));
diff --git a/test/tint/bug/tint/943.spvasm.expected.msl b/test/tint/bug/tint/943.spvasm.expected.msl
index 63f5ad3107..6093a20788 100644
--- a/test/tint/bug/tint/943.spvasm.expected.msl
+++ b/test/tint/bug/tint/943.spvasm.expected.msl
@@ -48,7 +48,7 @@ bool coordsInBounds_vi2_vi2_(thread int2* const coord, thread int2* const shape)
   bool x_87 = false;
   bool x_88_phi = false;
   int2 const x_76 = *(coord);
-  bool const x_81 = all((x_76 >= int2(0, 0)));
+  bool const x_81 = all((x_76 >= int2(0)));
   x_88_phi = x_81;
   if (x_81) {
     int2 const x_84 = *(coord);
@@ -497,12 +497,12 @@ void tint_symbol_1_inner(uint3 gl_LocalInvocationID_param, uint3 gl_GlobalInvoca
   {
     uint const i_1 = local_invocation_index;
     uint const i_2 = (local_invocation_index % 1u);
-    (*(tint_symbol_43)).arr[i_1].arr[i_2] = float();
+    (*(tint_symbol_43)).arr[i_1].arr[i_2] = 0.0f;
   }
   for(uint idx = local_invocation_index; (idx < 4096u); idx = (idx + 64u)) {
     uint const i = (idx / 64u);
     uint const i_1 = (idx % 64u);
-    (*(tint_symbol_44)).arr[i].arr[i_1] = float();
+    (*(tint_symbol_44)).arr[i].arr[i_1] = 0.0f;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   *(tint_symbol_45) = gl_LocalInvocationID_param;
diff --git a/test/tint/bug/tint/948.wgsl.expected.msl b/test/tint/bug/tint/948.wgsl.expected.msl
index 2057b433fc..c03a21b77e 100644
--- a/test/tint/bug/tint/948.wgsl.expected.msl
+++ b/test/tint/bug/tint/948.wgsl.expected.msl
@@ -49,7 +49,7 @@ float4x4 getFrameData_f1_(thread float* const frameID, const constant LeftOver*
   float4 const x_47 = tint_symbol_6.sample(tint_symbol_7, float2(x_44, 0.25f), bias(0.0f));
   float const x_51 = fX;
   float4 const x_54 = tint_symbol_6.sample(tint_symbol_7, float2(x_51, 0.5f), bias(0.0f));
-  return float4x4(float4(x_40[0], x_40[1], x_40[2], x_40[3]), float4(x_47[0], x_47[1], x_47[2], x_47[3]), float4(x_54[0], x_54[1], x_54[2], x_54[3]), float4(float4(0.0f, 0.0f, 0.0f, 0.0f)[0], float4(0.0f, 0.0f, 0.0f, 0.0f)[1], float4(0.0f, 0.0f, 0.0f, 0.0f)[2], float4(0.0f, 0.0f, 0.0f, 0.0f)[3]));
+  return float4x4(float4(x_40[0], x_40[1], x_40[2], x_40[3]), float4(x_47[0], x_47[1], x_47[2], x_47[3]), float4(x_54[0], x_54[1], x_54[2], x_54[3]), float4(float4(0.0f)[0], float4(0.0f)[1], float4(0.0f)[2], float4(0.0f)[3]));
 }
 
 void main_1(thread float2* const tint_symbol_8, const constant LeftOver* const tint_symbol_9, texture2d<float, access::sample> tint_symbol_10, sampler tint_symbol_11, texture2d<float, access::sample> tint_symbol_12, texture2d<float, access::sample> tint_symbol_13, sampler tint_symbol_14, thread float* const tint_symbol_15, texture2d<float, access::sample> tint_symbol_16, sampler tint_symbol_17, texture2d<float, access::sample> tint_symbol_18, sampler tint_symbol_19, thread float4* const tint_symbol_20) {
@@ -71,7 +71,7 @@ void main_1(thread float2* const tint_symbol_8, const constant LeftOver* const t
   float4 nc = 0.0f;
   float alpha = 0.0f;
   float3 mixed = 0.0f;
-  color = float4(0.0f, 0.0f, 0.0f, 0.0f);
+  color = float4(0.0f);
   float2 const x_86 = *(tint_symbol_8);
   tileUV = fract(x_86);
   float const x_91 = tileUV[1];
@@ -79,11 +79,11 @@ void main_1(thread float2* const tint_symbol_8, const constant LeftOver* const t
   float2 const x_95 = *(tint_symbol_8);
   tileID = floor(x_95);
   float2 const x_101 = (*(tint_symbol_9)).spriteMapSize;
-  sheetUnits = (float2(1.0f, 1.0f) / x_101);
+  sheetUnits = (float2(1.0f) / x_101);
   float const x_106 = (*(tint_symbol_9)).spriteCount;
   spriteUnits = (1.0f / x_106);
   float2 const x_111 = (*(tint_symbol_9)).stageSize;
-  stageUnits = (float2(1.0f, 1.0f) / x_111);
+  stageUnits = (float2(1.0f) / x_111);
   i = 0;
   while (true) {
     int const x_122 = i;
@@ -96,14 +96,14 @@ void main_1(thread float2* const tint_symbol_8, const constant LeftOver* const t
       case 1: {
         float2 const x_150 = tileID;
         float2 const x_154 = (*(tint_symbol_9)).stageSize;
-        float4 const x_156 = tint_symbol_10.sample(tint_symbol_11, ((x_150 + float2(0.5f, 0.5f)) / x_154), bias(0.0f));
+        float4 const x_156 = tint_symbol_10.sample(tint_symbol_11, ((x_150 + float2(0.5f)) / x_154), bias(0.0f));
         frameID_1 = x_156[0];
         break;
       }
       case 0: {
         float2 const x_136 = tileID;
         float2 const x_140 = (*(tint_symbol_9)).stageSize;
-        float4 const x_142 = tint_symbol_12.sample(tint_symbol_11, ((x_136 + float2(0.5f, 0.5f)) / x_140), bias(0.0f));
+        float4 const x_142 = tint_symbol_12.sample(tint_symbol_11, ((x_136 + float2(0.5f)) / x_140), bias(0.0f));
         frameID_1 = x_142[0];
         break;
       }
diff --git a/test/tint/bug/tint/949.wgsl.expected.msl b/test/tint/bug/tint/949.wgsl.expected.msl
index 35883388a0..5aab1bd778 100644
--- a/test/tint/bug/tint/949.wgsl.expected.msl
+++ b/test/tint/bug/tint/949.wgsl.expected.msl
@@ -149,7 +149,7 @@ float3 perturbNormal_mf33_vf3_f1_(thread float3x3* const cotangentFrame_1, threa
   float3 const x_119 = *(textureSample);
   float3x3 const x_125 = *(cotangentFrame_1);
   param = x_125;
-  param_1 = ((x_119 * 2.0f) - float3(1.0f, 1.0f, 1.0f));
+  param_1 = ((x_119 * 2.0f) - float3(1.0f));
   float const x_128 = *(scale_1);
   param_2 = x_128;
   float3 const x_129 = perturbNormalBase_mf33_vf3_f1_(&(param), &(param_1), &(param_2));
@@ -239,7 +239,7 @@ void main_1(thread float* const tint_symbol_5, thread float3* const tint_symbol_
   float3 specularOutput = 0.0f;
   float3 output3 = 0.0f;
   *(tint_symbol_5) = 100.0f;
-  *(tint_symbol_6) = float3(0.5f, 0.5f, 0.5f);
+  *(tint_symbol_6) = float3(0.5f);
   float2 const x_261 = *(tint_symbol_7);
   float4 const x_262 = tint_symbol_8.sample(tint_symbol_9, x_261);
   tempTextureRead = x_262;
@@ -249,8 +249,8 @@ void main_1(thread float* const tint_symbol_5, thread float3* const tint_symbol_
   float3 const x_279 = (*(tint_symbol_10)).u_cameraPosition;
   float4 const x_282 = *(tint_symbol_11);
   output5 = normalize((x_279 - float3(x_282[0], x_282[1], x_282[2])));
-  output4 = float4(0.0f, 0.0f, 0.0f, 0.0f);
-  uvOffset = float2(0.0f, 0.0f);
+  output4 = float4(0.0f);
+  uvOffset = float2(0.0f);
   float const x_292 = (*(tint_symbol_10)).u_bumpStrength;
   normalScale = (1.0f / x_292);
   bool const x_298 = *(tint_symbol_12);
@@ -302,8 +302,8 @@ void main_1(thread float* const tint_symbol_5, thread float3* const tint_symbol_
   float const x_374 = numSamples;
   stepSize = (1.0f / x_374);
   currRayHeight = 1.0f;
-  vCurrOffset = float2(0.0f, 0.0f);
-  vLastOffset = float2(0.0f, 0.0f);
+  vCurrOffset = float2(0.0f);
+  vLastOffset = float2(0.0f);
   lastSampledHeight = 1.0f;
   currSampledHeight = 1.0f;
   i = 0;
@@ -384,8 +384,8 @@ void main_1(thread float* const tint_symbol_5, thread float3* const tint_symbol_
   shadow = 1.0f;
   float const x_488 = *(tint_symbol_5);
   glossiness_1 = (1.0f * x_488);
-  diffuseBase = float3(0.0f, 0.0f, 0.0f);
-  specularBase = float3(0.0f, 0.0f, 0.0f);
+  diffuseBase = float3(0.0f);
+  specularBase = float3(0.0f);
   float4 const x_494 = output4;
   normalW = float3(x_494[0], x_494[1], x_494[2]);
   float3 const x_501 = viewDirectionW_1;
diff --git a/test/tint/builtins/extractBits/vec3/i32.spvasm.expected.msl b/test/tint/builtins/extractBits/vec3/i32.spvasm.expected.msl
index 38e5225470..9af5beba71 100644
--- a/test/tint/builtins/extractBits/vec3/i32.spvasm.expected.msl
+++ b/test/tint/builtins/extractBits/vec3/i32.spvasm.expected.msl
@@ -8,7 +8,7 @@ int3 tint_extract_bits(int3 v, uint offset, uint count) {
 }
 
 void f_1() {
-  int3 v = int3();
+  int3 v = int3(0);
   uint offset_1 = 0u;
   uint count = 0u;
   int3 const x_17 = v;
diff --git a/test/tint/builtins/extractBits/vec3/u32.spvasm.expected.msl b/test/tint/builtins/extractBits/vec3/u32.spvasm.expected.msl
index 77b64509a1..a9227ee8ec 100644
--- a/test/tint/builtins/extractBits/vec3/u32.spvasm.expected.msl
+++ b/test/tint/builtins/extractBits/vec3/u32.spvasm.expected.msl
@@ -8,7 +8,7 @@ uint3 tint_extract_bits(uint3 v, uint offset, uint count) {
 }
 
 void f_1() {
-  uint3 v = uint3();
+  uint3 v = uint3(0u);
   uint offset_1 = 0u;
   uint count = 0u;
   uint3 const x_16 = v;
diff --git a/test/tint/builtins/gen/abs/002533.wgsl.expected.msl b/test/tint/builtins/gen/abs/002533.wgsl.expected.msl
index e7c6e0cd7f..d1c346b0bb 100644
--- a/test/tint/builtins/gen/abs/002533.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/002533.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_002533() {
-  float4 res = fabs(float4());
+  float4 res = fabs(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_002533();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/005174.wgsl.expected.msl b/test/tint/builtins/gen/abs/005174.wgsl.expected.msl
index 7606da6715..7148a5c9da 100644
--- a/test/tint/builtins/gen/abs/005174.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/005174.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_005174() {
-  float3 res = fabs(float3());
+  float3 res = fabs(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_005174();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/1ce782.wgsl.expected.msl b/test/tint/builtins/gen/abs/1ce782.wgsl.expected.msl
index 73296533db..2029d3c2a4 100644
--- a/test/tint/builtins/gen/abs/1ce782.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/1ce782.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_1ce782() {
-  uint4 res = abs(uint4());
+  uint4 res = abs(uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_1ce782();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/1e9d53.wgsl.expected.msl b/test/tint/builtins/gen/abs/1e9d53.wgsl.expected.msl
index 7951049b1c..697d3a8c60 100644
--- a/test/tint/builtins/gen/abs/1e9d53.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/1e9d53.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_1e9d53() {
-  float2 res = fabs(float2());
+  float2 res = fabs(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_1e9d53();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/467cd1.wgsl.expected.msl b/test/tint/builtins/gen/abs/467cd1.wgsl.expected.msl
index 421b221d2f..22849cd1ea 100644
--- a/test/tint/builtins/gen/abs/467cd1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/467cd1.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_467cd1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/4ad288.wgsl.expected.msl b/test/tint/builtins/gen/abs/4ad288.wgsl.expected.msl
index dcea6480d9..60fb737263 100644
--- a/test/tint/builtins/gen/abs/4ad288.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/4ad288.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_4ad288();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/5ad50a.wgsl.expected.msl b/test/tint/builtins/gen/abs/5ad50a.wgsl.expected.msl
index b3da1a3dcb..b71c07eb99 100644
--- a/test/tint/builtins/gen/abs/5ad50a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/5ad50a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_5ad50a() {
-  int3 res = abs(int3());
+  int3 res = abs(int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_5ad50a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/7326de.wgsl.expected.msl b/test/tint/builtins/gen/abs/7326de.wgsl.expected.msl
index 146626d5ac..1a98a0d668 100644
--- a/test/tint/builtins/gen/abs/7326de.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/7326de.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_7326de() {
-  uint3 res = abs(uint3());
+  uint3 res = abs(uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_7326de();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/7f28e6.wgsl.expected.msl b/test/tint/builtins/gen/abs/7f28e6.wgsl.expected.msl
index 97422d7325..dc367907f0 100644
--- a/test/tint/builtins/gen/abs/7f28e6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/7f28e6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_7f28e6() {
-  uint2 res = abs(uint2());
+  uint2 res = abs(uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_7f28e6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/7faa9e.wgsl.expected.msl b/test/tint/builtins/gen/abs/7faa9e.wgsl.expected.msl
index 278f9dbbc6..af851389df 100644
--- a/test/tint/builtins/gen/abs/7faa9e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/7faa9e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_7faa9e() {
-  int2 res = abs(int2());
+  int2 res = abs(int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_7faa9e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/9c80a6.wgsl.expected.msl b/test/tint/builtins/gen/abs/9c80a6.wgsl.expected.msl
index 11b838e837..d1d822cd7d 100644
--- a/test/tint/builtins/gen/abs/9c80a6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/9c80a6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void abs_9c80a6() {
-  int4 res = abs(int4());
+  int4 res = abs(int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_9c80a6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/abs/b96037.wgsl.expected.msl b/test/tint/builtins/gen/abs/b96037.wgsl.expected.msl
index 92263420a3..38e2f9b030 100644
--- a/test/tint/builtins/gen/abs/b96037.wgsl.expected.msl
+++ b/test/tint/builtins/gen/abs/b96037.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   abs_b96037();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/acos/489247.wgsl.expected.msl b/test/tint/builtins/gen/acos/489247.wgsl.expected.msl
index b80a9c8515..a7bb168303 100644
--- a/test/tint/builtins/gen/acos/489247.wgsl.expected.msl
+++ b/test/tint/builtins/gen/acos/489247.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   acos_489247();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/acos/8e2acf.wgsl.expected.msl b/test/tint/builtins/gen/acos/8e2acf.wgsl.expected.msl
index 8595fceae2..d46c4d972b 100644
--- a/test/tint/builtins/gen/acos/8e2acf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/acos/8e2acf.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void acos_8e2acf() {
-  float4 res = acos(float4());
+  float4 res = acos(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   acos_8e2acf();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/acos/a610c4.wgsl.expected.msl b/test/tint/builtins/gen/acos/a610c4.wgsl.expected.msl
index 435d150f23..3d85c17786 100644
--- a/test/tint/builtins/gen/acos/a610c4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/acos/a610c4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void acos_a610c4() {
-  float3 res = acos(float3());
+  float3 res = acos(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   acos_a610c4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/acos/dfc915.wgsl.expected.msl b/test/tint/builtins/gen/acos/dfc915.wgsl.expected.msl
index 7668f36c1e..75dd630f30 100644
--- a/test/tint/builtins/gen/acos/dfc915.wgsl.expected.msl
+++ b/test/tint/builtins/gen/acos/dfc915.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void acos_dfc915() {
-  float2 res = acos(float2());
+  float2 res = acos(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   acos_dfc915();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/all/353d6a.wgsl.expected.msl b/test/tint/builtins/gen/all/353d6a.wgsl.expected.msl
index 74aff96a63..1bad262511 100644
--- a/test/tint/builtins/gen/all/353d6a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/all/353d6a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void all_353d6a() {
-  bool res = all(bool());
+  bool res = all(false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   all_353d6a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/all/986c7b.wgsl.expected.msl b/test/tint/builtins/gen/all/986c7b.wgsl.expected.msl
index 041e28037c..a5648b95d1 100644
--- a/test/tint/builtins/gen/all/986c7b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/all/986c7b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void all_986c7b() {
-  bool res = all(bool4());
+  bool res = all(bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   all_986c7b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/all/bd2dba.wgsl.expected.msl b/test/tint/builtins/gen/all/bd2dba.wgsl.expected.msl
index d6d45cff04..ad5232453b 100644
--- a/test/tint/builtins/gen/all/bd2dba.wgsl.expected.msl
+++ b/test/tint/builtins/gen/all/bd2dba.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void all_bd2dba() {
-  bool res = all(bool3());
+  bool res = all(bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   all_bd2dba();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/all/f46790.wgsl.expected.msl b/test/tint/builtins/gen/all/f46790.wgsl.expected.msl
index 60c3c44d7b..1d4420c339 100644
--- a/test/tint/builtins/gen/all/f46790.wgsl.expected.msl
+++ b/test/tint/builtins/gen/all/f46790.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void all_f46790() {
-  bool res = all(bool2());
+  bool res = all(bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   all_f46790();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/any/083428.wgsl.expected.msl b/test/tint/builtins/gen/any/083428.wgsl.expected.msl
index a11e292676..28a71e3a27 100644
--- a/test/tint/builtins/gen/any/083428.wgsl.expected.msl
+++ b/test/tint/builtins/gen/any/083428.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void any_083428() {
-  bool res = any(bool4());
+  bool res = any(bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   any_083428();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/any/0e3e58.wgsl.expected.msl b/test/tint/builtins/gen/any/0e3e58.wgsl.expected.msl
index 1bf7505bd3..b70ef8f653 100644
--- a/test/tint/builtins/gen/any/0e3e58.wgsl.expected.msl
+++ b/test/tint/builtins/gen/any/0e3e58.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void any_0e3e58() {
-  bool res = any(bool2());
+  bool res = any(bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   any_0e3e58();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/any/2ab91a.wgsl.expected.msl b/test/tint/builtins/gen/any/2ab91a.wgsl.expected.msl
index 15e82831fd..903fba8c01 100644
--- a/test/tint/builtins/gen/any/2ab91a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/any/2ab91a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void any_2ab91a() {
-  bool res = any(bool());
+  bool res = any(false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   any_2ab91a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/any/e755c1.wgsl.expected.msl b/test/tint/builtins/gen/any/e755c1.wgsl.expected.msl
index fc6214bccb..d8148350a0 100644
--- a/test/tint/builtins/gen/any/e755c1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/any/e755c1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void any_e755c1() {
-  bool res = any(bool3());
+  bool res = any(bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   any_e755c1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/arrayLength/1588cd.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/1588cd.wgsl.expected.msl
index 1793477027..1f8ac29561 100644
--- a/test/tint/builtins/gen/arrayLength/1588cd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/1588cd.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_1588cd(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/arrayLength/61b1c7.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/61b1c7.wgsl.expected.msl
index cebf66b06a..9fa02f3a11 100644
--- a/test/tint/builtins/gen/arrayLength/61b1c7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/61b1c7.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_61b1c7(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/arrayLength/a0f5ca.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/a0f5ca.wgsl.expected.msl
index a04fc9c82c..f1b77851c2 100644
--- a/test/tint/builtins/gen/arrayLength/a0f5ca.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/a0f5ca.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_a0f5ca(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/arrayLength/cdd123.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/cdd123.wgsl.expected.msl
index 3ba8276df0..22cfa6cbaa 100644
--- a/test/tint/builtins/gen/arrayLength/cdd123.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/cdd123.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_cdd123(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/arrayLength/cfca0a.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/cfca0a.wgsl.expected.msl
index 5dd7ad6153..d64c1e002d 100644
--- a/test/tint/builtins/gen/arrayLength/cfca0a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/cfca0a.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_cfca0a(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/arrayLength/eb510f.wgsl.expected.msl b/test/tint/builtins/gen/arrayLength/eb510f.wgsl.expected.msl
index c66c4264e4..44128538b9 100644
--- a/test/tint/builtins/gen/arrayLength/eb510f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/arrayLength/eb510f.wgsl.expected.msl
@@ -19,7 +19,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(const constant tint_symbol_1* const tint_symbol_4) {
   arrayLength_eb510f(tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(const constant tint_symbol_1* tint_symbol_5 [[buffer(30)]]) {
diff --git a/test/tint/builtins/gen/asin/064953.wgsl.expected.msl b/test/tint/builtins/gen/asin/064953.wgsl.expected.msl
index efee548e4c..8000af5e18 100644
--- a/test/tint/builtins/gen/asin/064953.wgsl.expected.msl
+++ b/test/tint/builtins/gen/asin/064953.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void asin_064953() {
-  float4 res = asin(float4());
+  float4 res = asin(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   asin_064953();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/asin/7b6a44.wgsl.expected.msl b/test/tint/builtins/gen/asin/7b6a44.wgsl.expected.msl
index 35238bb088..28eb3ee62a 100644
--- a/test/tint/builtins/gen/asin/7b6a44.wgsl.expected.msl
+++ b/test/tint/builtins/gen/asin/7b6a44.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void asin_7b6a44() {
-  float2 res = asin(float2());
+  float2 res = asin(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   asin_7b6a44();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/asin/8cd9c9.wgsl.expected.msl b/test/tint/builtins/gen/asin/8cd9c9.wgsl.expected.msl
index bd995202c8..627ab34558 100644
--- a/test/tint/builtins/gen/asin/8cd9c9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/asin/8cd9c9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void asin_8cd9c9() {
-  float3 res = asin(float3());
+  float3 res = asin(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   asin_8cd9c9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/asin/c0c272.wgsl.expected.msl b/test/tint/builtins/gen/asin/c0c272.wgsl.expected.msl
index 4ada72f62a..df7148b2af 100644
--- a/test/tint/builtins/gen/asin/c0c272.wgsl.expected.msl
+++ b/test/tint/builtins/gen/asin/c0c272.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   asin_c0c272();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan/02979a.wgsl.expected.msl b/test/tint/builtins/gen/atan/02979a.wgsl.expected.msl
index bfe58be704..a4b9181605 100644
--- a/test/tint/builtins/gen/atan/02979a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan/02979a.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan_02979a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan/331e6d.wgsl.expected.msl b/test/tint/builtins/gen/atan/331e6d.wgsl.expected.msl
index 3c7f449c9f..2abc788c07 100644
--- a/test/tint/builtins/gen/atan/331e6d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan/331e6d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan_331e6d() {
-  float3 res = atan(float3());
+  float3 res = atan(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan_331e6d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan/a8b696.wgsl.expected.msl b/test/tint/builtins/gen/atan/a8b696.wgsl.expected.msl
index a82a8f92e9..903ffce336 100644
--- a/test/tint/builtins/gen/atan/a8b696.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan/a8b696.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan_a8b696() {
-  float4 res = atan(float4());
+  float4 res = atan(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan_a8b696();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan/ad96e4.wgsl.expected.msl b/test/tint/builtins/gen/atan/ad96e4.wgsl.expected.msl
index f5a21518b5..ccb46e3ddc 100644
--- a/test/tint/builtins/gen/atan/ad96e4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan/ad96e4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan_ad96e4() {
-  float2 res = atan(float2());
+  float2 res = atan(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan_ad96e4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan2/57fb13.wgsl.expected.msl b/test/tint/builtins/gen/atan2/57fb13.wgsl.expected.msl
index f05e3c56b6..7d3ac1fd07 100644
--- a/test/tint/builtins/gen/atan2/57fb13.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan2/57fb13.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_57fb13() {
-  float2 res = atan2(float2(), float2());
+  float2 res = atan2(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan2_57fb13();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan2/96057c.wgsl.expected.msl b/test/tint/builtins/gen/atan2/96057c.wgsl.expected.msl
index 659a6225e1..f8d20e0120 100644
--- a/test/tint/builtins/gen/atan2/96057c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan2/96057c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan2_96057c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan2/a70d0d.wgsl.expected.msl b/test/tint/builtins/gen/atan2/a70d0d.wgsl.expected.msl
index 3281d2997f..0e88ba2d05 100644
--- a/test/tint/builtins/gen/atan2/a70d0d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan2/a70d0d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_a70d0d() {
-  float3 res = atan2(float3(), float3());
+  float3 res = atan2(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan2_a70d0d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atan2/ae713e.wgsl.expected.msl b/test/tint/builtins/gen/atan2/ae713e.wgsl.expected.msl
index 58e28ab259..5d7fa01f1a 100644
--- a/test/tint/builtins/gen/atan2/ae713e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atan2/ae713e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void atan2_ae713e() {
-  float4 res = atan2(float4(), float4());
+  float4 res = atan2(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   atan2_ae713e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/atomicAdd/794055.wgsl.expected.msl b/test/tint/builtins/gen/atomicAdd/794055.wgsl.expected.msl
index 5f8f64d87c..dca123cd13 100644
--- a/test/tint/builtins/gen/atomicAdd/794055.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicAdd/794055.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicAdd_794055(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicAdd_794055(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicAdd/d5db1d.wgsl.expected.msl b/test/tint/builtins/gen/atomicAdd/d5db1d.wgsl.expected.msl
index 5a9aaeee1a..3d80f24eae 100644
--- a/test/tint/builtins/gen/atomicAdd/d5db1d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicAdd/d5db1d.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicAdd_d5db1d(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicAdd_d5db1d(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicAnd/34edd3.wgsl.expected.msl b/test/tint/builtins/gen/atomicAnd/34edd3.wgsl.expected.msl
index c866b0ef0f..adc4916cd5 100644
--- a/test/tint/builtins/gen/atomicAnd/34edd3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicAnd/34edd3.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicAnd_34edd3(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicAnd_34edd3(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicAnd/45a819.wgsl.expected.msl b/test/tint/builtins/gen/atomicAnd/45a819.wgsl.expected.msl
index b9f92024de..4fff67198e 100644
--- a/test/tint/builtins/gen/atomicAnd/45a819.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicAnd/45a819.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicAnd_45a819(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicAnd_45a819(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicCompareExchangeWeak/83580d.wgsl.expected.msl b/test/tint/builtins/gen/atomicCompareExchangeWeak/83580d.wgsl.expected.msl
index 7a3443b90d..57f5ce34d3 100644
--- a/test/tint/builtins/gen/atomicCompareExchangeWeak/83580d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicCompareExchangeWeak/83580d.wgsl.expected.msl
@@ -19,7 +19,7 @@ void atomicCompareExchangeWeak_83580d(threadgroup atomic_uint* const tint_symbol
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicCompareExchangeWeak_83580d(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicCompareExchangeWeak/e88938.wgsl.expected.msl b/test/tint/builtins/gen/atomicCompareExchangeWeak/e88938.wgsl.expected.msl
index 9815b6d0d6..0d754bca1b 100644
--- a/test/tint/builtins/gen/atomicCompareExchangeWeak/e88938.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicCompareExchangeWeak/e88938.wgsl.expected.msl
@@ -19,7 +19,7 @@ void atomicCompareExchangeWeak_e88938(threadgroup atomic_int* const tint_symbol)
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicCompareExchangeWeak_e88938(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicExchange/0a5dca.wgsl.expected.msl b/test/tint/builtins/gen/atomicExchange/0a5dca.wgsl.expected.msl
index 23e312119c..392a929458 100644
--- a/test/tint/builtins/gen/atomicExchange/0a5dca.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicExchange/0a5dca.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicExchange_0a5dca(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicExchange_0a5dca(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicExchange/e114ba.wgsl.expected.msl b/test/tint/builtins/gen/atomicExchange/e114ba.wgsl.expected.msl
index abcec161c3..d213dff104 100644
--- a/test/tint/builtins/gen/atomicExchange/e114ba.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicExchange/e114ba.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicExchange_e114ba(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicExchange_e114ba(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicLoad/361bf1.wgsl.expected.msl b/test/tint/builtins/gen/atomicLoad/361bf1.wgsl.expected.msl
index 327dc2ad92..eedf946e10 100644
--- a/test/tint/builtins/gen/atomicLoad/361bf1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicLoad/361bf1.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicLoad_361bf1(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicLoad_361bf1(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicLoad/afcc03.wgsl.expected.msl b/test/tint/builtins/gen/atomicLoad/afcc03.wgsl.expected.msl
index b3948d3f40..90d483da2f 100644
--- a/test/tint/builtins/gen/atomicLoad/afcc03.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicLoad/afcc03.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicLoad_afcc03(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicLoad_afcc03(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicMax/a89cc3.wgsl.expected.msl b/test/tint/builtins/gen/atomicMax/a89cc3.wgsl.expected.msl
index fbe1f22096..bf92158a05 100644
--- a/test/tint/builtins/gen/atomicMax/a89cc3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicMax/a89cc3.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicMax_a89cc3(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicMax_a89cc3(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicMax/beccfc.wgsl.expected.msl b/test/tint/builtins/gen/atomicMax/beccfc.wgsl.expected.msl
index 5edad1c6bf..a0d53b910f 100644
--- a/test/tint/builtins/gen/atomicMax/beccfc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicMax/beccfc.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicMax_beccfc(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicMax_beccfc(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicMin/278235.wgsl.expected.msl b/test/tint/builtins/gen/atomicMin/278235.wgsl.expected.msl
index 3b359fca64..afc4fe065a 100644
--- a/test/tint/builtins/gen/atomicMin/278235.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicMin/278235.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicMin_278235(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicMin_278235(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicMin/69d383.wgsl.expected.msl b/test/tint/builtins/gen/atomicMin/69d383.wgsl.expected.msl
index 9c1e70e877..166a4c200c 100644
--- a/test/tint/builtins/gen/atomicMin/69d383.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicMin/69d383.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicMin_69d383(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicMin_69d383(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicOr/5e3d61.wgsl.expected.msl b/test/tint/builtins/gen/atomicOr/5e3d61.wgsl.expected.msl
index 9aea6427bc..9527616f33 100644
--- a/test/tint/builtins/gen/atomicOr/5e3d61.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicOr/5e3d61.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicOr_5e3d61(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicOr_5e3d61(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicOr/d09248.wgsl.expected.msl b/test/tint/builtins/gen/atomicOr/d09248.wgsl.expected.msl
index 6a0d77dd80..0d50df3409 100644
--- a/test/tint/builtins/gen/atomicOr/d09248.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicOr/d09248.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicOr_d09248(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicOr_d09248(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicStore/726882.wgsl.expected.msl b/test/tint/builtins/gen/atomicStore/726882.wgsl.expected.msl
index 665c40cdde..67f1592889 100644
--- a/test/tint/builtins/gen/atomicStore/726882.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicStore/726882.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicStore_726882(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicStore_726882(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicStore/8bea94.wgsl.expected.msl b/test/tint/builtins/gen/atomicStore/8bea94.wgsl.expected.msl
index c17b49ca48..b549a08e96 100644
--- a/test/tint/builtins/gen/atomicStore/8bea94.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicStore/8bea94.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicStore_8bea94(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicStore_8bea94(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicSub/0d26c2.wgsl.expected.msl b/test/tint/builtins/gen/atomicSub/0d26c2.wgsl.expected.msl
index aea7fed773..9ea6c9775c 100644
--- a/test/tint/builtins/gen/atomicSub/0d26c2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicSub/0d26c2.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicSub_0d26c2(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicSub_0d26c2(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicSub/77883a.wgsl.expected.msl b/test/tint/builtins/gen/atomicSub/77883a.wgsl.expected.msl
index 603ac409c4..af2c77b2d2 100644
--- a/test/tint/builtins/gen/atomicSub/77883a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicSub/77883a.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicSub_77883a(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicSub_77883a(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicXor/75dc95.wgsl.expected.msl b/test/tint/builtins/gen/atomicXor/75dc95.wgsl.expected.msl
index a89935b70a..83e290b8d1 100644
--- a/test/tint/builtins/gen/atomicXor/75dc95.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicXor/75dc95.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicXor_75dc95(threadgroup atomic_int* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_int* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, int(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicXor_75dc95(tint_symbol_1);
diff --git a/test/tint/builtins/gen/atomicXor/c8e6be.wgsl.expected.msl b/test/tint/builtins/gen/atomicXor/c8e6be.wgsl.expected.msl
index 097ce40f58..41b94a05eb 100644
--- a/test/tint/builtins/gen/atomicXor/c8e6be.wgsl.expected.msl
+++ b/test/tint/builtins/gen/atomicXor/c8e6be.wgsl.expected.msl
@@ -7,7 +7,7 @@ void atomicXor_c8e6be(threadgroup atomic_uint* const tint_symbol) {
 
 void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
   {
-    atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
+    atomic_store_explicit(tint_symbol_1, 0u, memory_order_relaxed);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   atomicXor_c8e6be(tint_symbol_1);
diff --git a/test/tint/builtins/gen/ceil/34064b.wgsl.expected.msl b/test/tint/builtins/gen/ceil/34064b.wgsl.expected.msl
index a8886eb293..67750519f4 100644
--- a/test/tint/builtins/gen/ceil/34064b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ceil/34064b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ceil_34064b() {
-  float3 res = ceil(float3());
+  float3 res = ceil(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ceil_34064b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ceil/678655.wgsl.expected.msl b/test/tint/builtins/gen/ceil/678655.wgsl.expected.msl
index 6a52e99a31..37d1aeca45 100644
--- a/test/tint/builtins/gen/ceil/678655.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ceil/678655.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ceil_678655();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ceil/96f597.wgsl.expected.msl b/test/tint/builtins/gen/ceil/96f597.wgsl.expected.msl
index ec019842f8..b5de93ad94 100644
--- a/test/tint/builtins/gen/ceil/96f597.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ceil/96f597.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ceil_96f597() {
-  float2 res = ceil(float2());
+  float2 res = ceil(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ceil_96f597();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ceil/b74c16.wgsl.expected.msl b/test/tint/builtins/gen/ceil/b74c16.wgsl.expected.msl
index 8aefc080f3..ad695406bb 100644
--- a/test/tint/builtins/gen/ceil/b74c16.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ceil/b74c16.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ceil_b74c16() {
-  float4 res = ceil(float4());
+  float4 res = ceil(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ceil_b74c16();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/0acf8f.wgsl.expected.msl b/test/tint/builtins/gen/clamp/0acf8f.wgsl.expected.msl
index 916d8fdce9..19f2f4871f 100644
--- a/test/tint/builtins/gen/clamp/0acf8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/0acf8f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_0acf8f() {
-  float2 res = clamp(float2(), float2(), float2());
+  float2 res = clamp(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_0acf8f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/1a32e3.wgsl.expected.msl b/test/tint/builtins/gen/clamp/1a32e3.wgsl.expected.msl
index 44f759a007..9ffc14a110 100644
--- a/test/tint/builtins/gen/clamp/1a32e3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/1a32e3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_1a32e3() {
-  int4 res = clamp(int4(), int4(), int4());
+  int4 res = clamp(int4(0), int4(0), int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_1a32e3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/2bd567.wgsl.expected.msl b/test/tint/builtins/gen/clamp/2bd567.wgsl.expected.msl
index dfcc293e4b..338e4386c3 100644
--- a/test/tint/builtins/gen/clamp/2bd567.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/2bd567.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_2bd567();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/2bde41.wgsl.expected.msl b/test/tint/builtins/gen/clamp/2bde41.wgsl.expected.msl
index dac7c95dc9..801e95a9f9 100644
--- a/test/tint/builtins/gen/clamp/2bde41.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/2bde41.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_2bde41() {
-  float4 res = clamp(float4(), float4(), float4());
+  float4 res = clamp(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_2bde41();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/548fc7.wgsl.expected.msl b/test/tint/builtins/gen/clamp/548fc7.wgsl.expected.msl
index 0ca98d3866..7118ba6ce4 100644
--- a/test/tint/builtins/gen/clamp/548fc7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/548fc7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_548fc7() {
-  uint3 res = clamp(uint3(), uint3(), uint3());
+  uint3 res = clamp(uint3(0u), uint3(0u), uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_548fc7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/5f0819.wgsl.expected.msl b/test/tint/builtins/gen/clamp/5f0819.wgsl.expected.msl
index b2da28a4fb..544d17764d 100644
--- a/test/tint/builtins/gen/clamp/5f0819.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/5f0819.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_5f0819() {
-  int3 res = clamp(int3(), int3(), int3());
+  int3 res = clamp(int3(0), int3(0), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_5f0819();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/6c1749.wgsl.expected.msl b/test/tint/builtins/gen/clamp/6c1749.wgsl.expected.msl
index 39c36afb36..fd20f66722 100644
--- a/test/tint/builtins/gen/clamp/6c1749.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/6c1749.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_6c1749() {
-  int2 res = clamp(int2(), int2(), int2());
+  int2 res = clamp(int2(0), int2(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_6c1749();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/7706d7.wgsl.expected.msl b/test/tint/builtins/gen/clamp/7706d7.wgsl.expected.msl
index 840b4ad5c0..97b583be7f 100644
--- a/test/tint/builtins/gen/clamp/7706d7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/7706d7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_7706d7() {
-  uint2 res = clamp(uint2(), uint2(), uint2());
+  uint2 res = clamp(uint2(0u), uint2(0u), uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_7706d7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/867397.wgsl.expected.msl b/test/tint/builtins/gen/clamp/867397.wgsl.expected.msl
index 66e86469da..7bf7bae55d 100644
--- a/test/tint/builtins/gen/clamp/867397.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/867397.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_867397() {
-  float3 res = clamp(float3(), float3(), float3());
+  float3 res = clamp(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_867397();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/a2de25.wgsl.expected.msl b/test/tint/builtins/gen/clamp/a2de25.wgsl.expected.msl
index 8e4fdfb3d9..0669039624 100644
--- a/test/tint/builtins/gen/clamp/a2de25.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/a2de25.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_a2de25();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/b07c65.wgsl.expected.msl b/test/tint/builtins/gen/clamp/b07c65.wgsl.expected.msl
index cfe6f26816..ab1978cc40 100644
--- a/test/tint/builtins/gen/clamp/b07c65.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/b07c65.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_b07c65();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/clamp/bd43ce.wgsl.expected.msl b/test/tint/builtins/gen/clamp/bd43ce.wgsl.expected.msl
index 45be006ead..8f41464710 100644
--- a/test/tint/builtins/gen/clamp/bd43ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/clamp/bd43ce.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void clamp_bd43ce() {
-  uint4 res = clamp(uint4(), uint4(), uint4());
+  uint4 res = clamp(uint4(0u), uint4(0u), uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   clamp_bd43ce();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cos/16dc15.wgsl.expected.msl b/test/tint/builtins/gen/cos/16dc15.wgsl.expected.msl
index 757514ed81..e593fc725e 100644
--- a/test/tint/builtins/gen/cos/16dc15.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cos/16dc15.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cos_16dc15() {
-  float3 res = cos(float3());
+  float3 res = cos(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cos_16dc15();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cos/29d66d.wgsl.expected.msl b/test/tint/builtins/gen/cos/29d66d.wgsl.expected.msl
index c77bb9ee8b..1e288cbf43 100644
--- a/test/tint/builtins/gen/cos/29d66d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cos/29d66d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cos_29d66d() {
-  float4 res = cos(float4());
+  float4 res = cos(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cos_29d66d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cos/c3b486.wgsl.expected.msl b/test/tint/builtins/gen/cos/c3b486.wgsl.expected.msl
index 9118d2961c..a1e0e6bb93 100644
--- a/test/tint/builtins/gen/cos/c3b486.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cos/c3b486.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cos_c3b486() {
-  float2 res = cos(float2());
+  float2 res = cos(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cos_c3b486();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cos/c5c28e.wgsl.expected.msl b/test/tint/builtins/gen/cos/c5c28e.wgsl.expected.msl
index fb0fdd7a26..2fc7d06480 100644
--- a/test/tint/builtins/gen/cos/c5c28e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cos/c5c28e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cos_c5c28e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cosh/377652.wgsl.expected.msl b/test/tint/builtins/gen/cosh/377652.wgsl.expected.msl
index 0edfd485f3..218f15392c 100644
--- a/test/tint/builtins/gen/cosh/377652.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cosh/377652.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cosh_377652() {
-  float3 res = cosh(float3());
+  float3 res = cosh(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cosh_377652();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cosh/c13756.wgsl.expected.msl b/test/tint/builtins/gen/cosh/c13756.wgsl.expected.msl
index 84f27d0074..69e464b8bf 100644
--- a/test/tint/builtins/gen/cosh/c13756.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cosh/c13756.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cosh_c13756() {
-  float2 res = cosh(float2());
+  float2 res = cosh(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cosh_c13756();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cosh/da92dd.wgsl.expected.msl b/test/tint/builtins/gen/cosh/da92dd.wgsl.expected.msl
index 21bc8291d5..9cc36ccc46 100644
--- a/test/tint/builtins/gen/cosh/da92dd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cosh/da92dd.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cosh_da92dd();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cosh/e0c1de.wgsl.expected.msl b/test/tint/builtins/gen/cosh/e0c1de.wgsl.expected.msl
index 1bf2ee4ced..b04468d47f 100644
--- a/test/tint/builtins/gen/cosh/e0c1de.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cosh/e0c1de.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cosh_e0c1de() {
-  float4 res = cosh(float4());
+  float4 res = cosh(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cosh_e0c1de();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/208d46.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/208d46.wgsl.expected.msl
index f1368f91e9..da0f3aec1b 100644
--- a/test/tint/builtins/gen/countLeadingZeros/208d46.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/208d46.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_208d46();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/6d4656.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/6d4656.wgsl.expected.msl
index 5a745169e1..3a085a5dbf 100644
--- a/test/tint/builtins/gen/countLeadingZeros/6d4656.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/6d4656.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_6d4656();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/70783f.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/70783f.wgsl.expected.msl
index 0f272c2b43..cca2e38e82 100644
--- a/test/tint/builtins/gen/countLeadingZeros/70783f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/70783f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_70783f() {
-  uint2 res = clz(uint2());
+  uint2 res = clz(uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_70783f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/7c38a6.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/7c38a6.wgsl.expected.msl
index e7a07c8c61..9cd1b87258 100644
--- a/test/tint/builtins/gen/countLeadingZeros/7c38a6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/7c38a6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_7c38a6() {
-  int3 res = clz(int3());
+  int3 res = clz(int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_7c38a6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/858d40.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/858d40.wgsl.expected.msl
index e8773e3ba6..51249fd66a 100644
--- a/test/tint/builtins/gen/countLeadingZeros/858d40.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/858d40.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_858d40() {
-  int2 res = clz(int2());
+  int2 res = clz(int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_858d40();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/ab6345.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/ab6345.wgsl.expected.msl
index 3dc764c9ec..805defdb40 100644
--- a/test/tint/builtins/gen/countLeadingZeros/ab6345.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/ab6345.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_ab6345() {
-  uint3 res = clz(uint3());
+  uint3 res = clz(uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_ab6345();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/eab32b.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/eab32b.wgsl.expected.msl
index 53fc2bd00e..a85b6e0789 100644
--- a/test/tint/builtins/gen/countLeadingZeros/eab32b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/eab32b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_eab32b() {
-  int4 res = clz(int4());
+  int4 res = clz(int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_eab32b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countLeadingZeros/f70103.wgsl.expected.msl b/test/tint/builtins/gen/countLeadingZeros/f70103.wgsl.expected.msl
index b29d8fbdad..aedee4c9d0 100644
--- a/test/tint/builtins/gen/countLeadingZeros/f70103.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countLeadingZeros/f70103.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countLeadingZeros_f70103() {
-  uint4 res = clz(uint4());
+  uint4 res = clz(uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countLeadingZeros_f70103();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/0d0e46.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/0d0e46.wgsl.expected.msl
index 448eec5cdb..b61ed001a2 100644
--- a/test/tint/builtins/gen/countOneBits/0d0e46.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/0d0e46.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_0d0e46() {
-  uint4 res = popcount(uint4());
+  uint4 res = popcount(uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_0d0e46();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/0f7980.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/0f7980.wgsl.expected.msl
index 196fe6abe1..7f864ac50c 100644
--- a/test/tint/builtins/gen/countOneBits/0f7980.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/0f7980.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_0f7980() {
-  int4 res = popcount(int4());
+  int4 res = popcount(int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_0f7980();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/65d2ae.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/65d2ae.wgsl.expected.msl
index a8ac3e8686..dcedaa50a1 100644
--- a/test/tint/builtins/gen/countOneBits/65d2ae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/65d2ae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_65d2ae() {
-  int3 res = popcount(int3());
+  int3 res = popcount(int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_65d2ae();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/690cfc.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/690cfc.wgsl.expected.msl
index 00274407f3..4038a5010e 100644
--- a/test/tint/builtins/gen/countOneBits/690cfc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/690cfc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_690cfc() {
-  uint3 res = popcount(uint3());
+  uint3 res = popcount(uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_690cfc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/94fd81.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/94fd81.wgsl.expected.msl
index e1f624821c..d9263d2c41 100644
--- a/test/tint/builtins/gen/countOneBits/94fd81.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/94fd81.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_94fd81() {
-  uint2 res = popcount(uint2());
+  uint2 res = popcount(uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_94fd81();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/ae44f9.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/ae44f9.wgsl.expected.msl
index 5a33d66585..70e2b9f6f2 100644
--- a/test/tint/builtins/gen/countOneBits/ae44f9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/ae44f9.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_ae44f9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/af90e2.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/af90e2.wgsl.expected.msl
index f68cf94c5a..2bc7fb2e55 100644
--- a/test/tint/builtins/gen/countOneBits/af90e2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/af90e2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countOneBits_af90e2() {
-  int2 res = popcount(int2());
+  int2 res = popcount(int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_af90e2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countOneBits/fd88b2.wgsl.expected.msl b/test/tint/builtins/gen/countOneBits/fd88b2.wgsl.expected.msl
index 998da7ae27..91cd762778 100644
--- a/test/tint/builtins/gen/countOneBits/fd88b2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countOneBits/fd88b2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countOneBits_fd88b2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/1ad138.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/1ad138.wgsl.expected.msl
index 1db16bf7eb..878eb349af 100644
--- a/test/tint/builtins/gen/countTrailingZeros/1ad138.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/1ad138.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_1ad138() {
-  uint2 res = ctz(uint2());
+  uint2 res = ctz(uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_1ad138();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/1dc84a.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/1dc84a.wgsl.expected.msl
index 33863bf6f7..29504f3340 100644
--- a/test/tint/builtins/gen/countTrailingZeros/1dc84a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/1dc84a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_1dc84a() {
-  int4 res = ctz(int4());
+  int4 res = ctz(int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_1dc84a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/21e394.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/21e394.wgsl.expected.msl
index 224d4ce684..e403208976 100644
--- a/test/tint/builtins/gen/countTrailingZeros/21e394.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/21e394.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_21e394();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/327c37.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/327c37.wgsl.expected.msl
index 3017464b97..dbce4a98f8 100644
--- a/test/tint/builtins/gen/countTrailingZeros/327c37.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/327c37.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_327c37() {
-  int2 res = ctz(int2());
+  int2 res = ctz(int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_327c37();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/42fed6.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/42fed6.wgsl.expected.msl
index 2d69179817..7d73b007a7 100644
--- a/test/tint/builtins/gen/countTrailingZeros/42fed6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/42fed6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_42fed6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/8ed26f.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/8ed26f.wgsl.expected.msl
index 076a02d580..14b7ddcd34 100644
--- a/test/tint/builtins/gen/countTrailingZeros/8ed26f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/8ed26f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_8ed26f() {
-  uint3 res = ctz(uint3());
+  uint3 res = ctz(uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_8ed26f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/acfacb.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/acfacb.wgsl.expected.msl
index 8fa6a02821..619895df4f 100644
--- a/test/tint/builtins/gen/countTrailingZeros/acfacb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/acfacb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_acfacb() {
-  int3 res = ctz(int3());
+  int3 res = ctz(int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_acfacb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/countTrailingZeros/d2b4a0.wgsl.expected.msl b/test/tint/builtins/gen/countTrailingZeros/d2b4a0.wgsl.expected.msl
index 7954b94fa6..b042a36657 100644
--- a/test/tint/builtins/gen/countTrailingZeros/d2b4a0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/countTrailingZeros/d2b4a0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void countTrailingZeros_d2b4a0() {
-  uint4 res = ctz(uint4());
+  uint4 res = ctz(uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   countTrailingZeros_d2b4a0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/cross/041cb0.wgsl.expected.msl b/test/tint/builtins/gen/cross/041cb0.wgsl.expected.msl
index 86e2546252..01500bb8d9 100644
--- a/test/tint/builtins/gen/cross/041cb0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/cross/041cb0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void cross_041cb0() {
-  float3 res = cross(float3(), float3());
+  float3 res = cross(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   cross_041cb0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/degrees/0d170c.wgsl.expected.msl b/test/tint/builtins/gen/degrees/0d170c.wgsl.expected.msl
index 2773179bd4..213adf069b 100644
--- a/test/tint/builtins/gen/degrees/0d170c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/degrees/0d170c.wgsl.expected.msl
@@ -7,7 +7,7 @@ float4 tint_degrees(float4 param_0) {
 }
 
 void degrees_0d170c() {
-  float4 res = tint_degrees(float4());
+  float4 res = tint_degrees(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   degrees_0d170c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/degrees/1ad5df.wgsl.expected.msl b/test/tint/builtins/gen/degrees/1ad5df.wgsl.expected.msl
index 5305c0fb6f..ca1cc3754a 100644
--- a/test/tint/builtins/gen/degrees/1ad5df.wgsl.expected.msl
+++ b/test/tint/builtins/gen/degrees/1ad5df.wgsl.expected.msl
@@ -7,7 +7,7 @@ float2 tint_degrees(float2 param_0) {
 }
 
 void degrees_1ad5df() {
-  float2 res = tint_degrees(float2());
+  float2 res = tint_degrees(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   degrees_1ad5df();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/degrees/2af623.wgsl.expected.msl b/test/tint/builtins/gen/degrees/2af623.wgsl.expected.msl
index 46d0565e39..5bfc5ff6b3 100644
--- a/test/tint/builtins/gen/degrees/2af623.wgsl.expected.msl
+++ b/test/tint/builtins/gen/degrees/2af623.wgsl.expected.msl
@@ -7,7 +7,7 @@ float3 tint_degrees(float3 param_0) {
 }
 
 void degrees_2af623() {
-  float3 res = tint_degrees(float3());
+  float3 res = tint_degrees(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   degrees_2af623();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/degrees/51f705.wgsl.expected.msl b/test/tint/builtins/gen/degrees/51f705.wgsl.expected.msl
index 2b6395dd67..6c29fa0a17 100644
--- a/test/tint/builtins/gen/degrees/51f705.wgsl.expected.msl
+++ b/test/tint/builtins/gen/degrees/51f705.wgsl.expected.msl
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   degrees_51f705();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/determinant/2b62ba.wgsl.expected.msl b/test/tint/builtins/gen/determinant/2b62ba.wgsl.expected.msl
index 6953c6b38d..50972bfca8 100644
--- a/test/tint/builtins/gen/determinant/2b62ba.wgsl.expected.msl
+++ b/test/tint/builtins/gen/determinant/2b62ba.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void determinant_2b62ba() {
-  float res = determinant(float3x3());
+  float res = determinant(float3x3(float3(0.0f), float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   determinant_2b62ba();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/determinant/a0a87c.wgsl.expected.msl b/test/tint/builtins/gen/determinant/a0a87c.wgsl.expected.msl
index 44820746f6..65ce75a8e6 100644
--- a/test/tint/builtins/gen/determinant/a0a87c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/determinant/a0a87c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void determinant_a0a87c() {
-  float res = determinant(float4x4());
+  float res = determinant(float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   determinant_a0a87c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/determinant/e19305.wgsl.expected.msl b/test/tint/builtins/gen/determinant/e19305.wgsl.expected.msl
index ce236ae97e..58b03f5904 100644
--- a/test/tint/builtins/gen/determinant/e19305.wgsl.expected.msl
+++ b/test/tint/builtins/gen/determinant/e19305.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void determinant_e19305() {
-  float res = determinant(float2x2());
+  float res = determinant(float2x2(float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   determinant_e19305();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/distance/0657d4.wgsl.expected.msl b/test/tint/builtins/gen/distance/0657d4.wgsl.expected.msl
index 834ac1342f..22adbc9545 100644
--- a/test/tint/builtins/gen/distance/0657d4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/distance/0657d4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void distance_0657d4() {
-  float res = distance(float3(), float3());
+  float res = distance(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   distance_0657d4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/distance/9646ea.wgsl.expected.msl b/test/tint/builtins/gen/distance/9646ea.wgsl.expected.msl
index 687568459b..1c9effcda4 100644
--- a/test/tint/builtins/gen/distance/9646ea.wgsl.expected.msl
+++ b/test/tint/builtins/gen/distance/9646ea.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void distance_9646ea() {
-  float res = distance(float4(), float4());
+  float res = distance(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   distance_9646ea();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/distance/aa4055.wgsl.expected.msl b/test/tint/builtins/gen/distance/aa4055.wgsl.expected.msl
index b2d798b7b4..9303f3a7a9 100644
--- a/test/tint/builtins/gen/distance/aa4055.wgsl.expected.msl
+++ b/test/tint/builtins/gen/distance/aa4055.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void distance_aa4055() {
-  float res = distance(float2(), float2());
+  float res = distance(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   distance_aa4055();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/distance/cfed73.wgsl.expected.msl b/test/tint/builtins/gen/distance/cfed73.wgsl.expected.msl
index 698ebb1b70..a149206f88 100644
--- a/test/tint/builtins/gen/distance/cfed73.wgsl.expected.msl
+++ b/test/tint/builtins/gen/distance/cfed73.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   distance_cfed73();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/0c577b.wgsl.expected.msl b/test/tint/builtins/gen/dot/0c577b.wgsl.expected.msl
index 19de798eca..179265a2bb 100644
--- a/test/tint/builtins/gen/dot/0c577b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/0c577b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dot_0c577b() {
-  float res = dot(float4(), float4());
+  float res = dot(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_0c577b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/7548a0.wgsl.expected.msl b/test/tint/builtins/gen/dot/7548a0.wgsl.expected.msl
index d0d876dcf8..5972b3ff52 100644
--- a/test/tint/builtins/gen/dot/7548a0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/7548a0.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot3(vec<T,3> a, vec<T,3> b) {
   return a[0]*b[0] + a[1]*b[1] + a[2]*b[2];
 }
 void dot_7548a0() {
-  uint res = tint_dot3(uint3(), uint3());
+  uint res = tint_dot3(uint3(0u), uint3(0u));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_7548a0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/883f0e.wgsl.expected.msl b/test/tint/builtins/gen/dot/883f0e.wgsl.expected.msl
index 00dbb28578..554b7deea4 100644
--- a/test/tint/builtins/gen/dot/883f0e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/883f0e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dot_883f0e() {
-  float res = dot(float2(), float2());
+  float res = dot(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_883f0e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/97c7ee.wgsl.expected.msl b/test/tint/builtins/gen/dot/97c7ee.wgsl.expected.msl
index ed799a17bf..bf89820776 100644
--- a/test/tint/builtins/gen/dot/97c7ee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/97c7ee.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot2(vec<T,2> a, vec<T,2> b) {
   return a[0]*b[0] + a[1]*b[1];
 }
 void dot_97c7ee() {
-  uint res = tint_dot2(uint2(), uint2());
+  uint res = tint_dot2(uint2(0u), uint2(0u));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_97c7ee();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/ba4246.wgsl.expected.msl b/test/tint/builtins/gen/dot/ba4246.wgsl.expected.msl
index 9124e9475a..972cd2ed5a 100644
--- a/test/tint/builtins/gen/dot/ba4246.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/ba4246.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dot_ba4246() {
-  float res = dot(float3(), float3());
+  float res = dot(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_ba4246();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/e994c7.wgsl.expected.msl b/test/tint/builtins/gen/dot/e994c7.wgsl.expected.msl
index e2d1a32ffb..306ca8c9e3 100644
--- a/test/tint/builtins/gen/dot/e994c7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/e994c7.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot4(vec<T,4> a, vec<T,4> b) {
   return a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3];
 }
 void dot_e994c7() {
-  uint res = tint_dot4(uint4(), uint4());
+  uint res = tint_dot4(uint4(0u), uint4(0u));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_e994c7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/ef6b1d.wgsl.expected.msl b/test/tint/builtins/gen/dot/ef6b1d.wgsl.expected.msl
index 47600314d4..d89e2ffdc1 100644
--- a/test/tint/builtins/gen/dot/ef6b1d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/ef6b1d.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot4(vec<T,4> a, vec<T,4> b) {
   return a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3];
 }
 void dot_ef6b1d() {
-  int res = tint_dot4(int4(), int4());
+  int res = tint_dot4(int4(0), int4(0));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_ef6b1d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/f1312c.wgsl.expected.msl b/test/tint/builtins/gen/dot/f1312c.wgsl.expected.msl
index ecf8b2d83e..a4a95aeda5 100644
--- a/test/tint/builtins/gen/dot/f1312c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/f1312c.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot3(vec<T,3> a, vec<T,3> b) {
   return a[0]*b[0] + a[1]*b[1] + a[2]*b[2];
 }
 void dot_f1312c() {
-  int res = tint_dot3(int3(), int3());
+  int res = tint_dot3(int3(0), int3(0));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_f1312c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dot/fc5f7c.wgsl.expected.msl b/test/tint/builtins/gen/dot/fc5f7c.wgsl.expected.msl
index 199ff06af1..7659b6221d 100644
--- a/test/tint/builtins/gen/dot/fc5f7c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dot/fc5f7c.wgsl.expected.msl
@@ -7,7 +7,7 @@ T tint_dot2(vec<T,2> a, vec<T,2> b) {
   return a[0]*b[0] + a[1]*b[1];
 }
 void dot_fc5f7c() {
-  int res = tint_dot2(int2(), int2());
+  int res = tint_dot2(int2(0), int2(0));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   dot_fc5f7c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/dpdx/0763f7.wgsl.expected.msl b/test/tint/builtins/gen/dpdx/0763f7.wgsl.expected.msl
index a7719d71bf..017a499564 100644
--- a/test/tint/builtins/gen/dpdx/0763f7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdx/0763f7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdx_0763f7() {
-  float3 res = dfdx(float3());
+  float3 res = dfdx(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdx/99edb1.wgsl.expected.msl b/test/tint/builtins/gen/dpdx/99edb1.wgsl.expected.msl
index c1583821c1..258ec624b6 100644
--- a/test/tint/builtins/gen/dpdx/99edb1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdx/99edb1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdx_99edb1() {
-  float2 res = dfdx(float2());
+  float2 res = dfdx(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdx/c487fa.wgsl.expected.msl b/test/tint/builtins/gen/dpdx/c487fa.wgsl.expected.msl
index bb43c52cdf..8071b345bf 100644
--- a/test/tint/builtins/gen/dpdx/c487fa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdx/c487fa.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdx_c487fa() {
-  float4 res = dfdx(float4());
+  float4 res = dfdx(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxCoarse/9581cf.wgsl.expected.msl b/test/tint/builtins/gen/dpdxCoarse/9581cf.wgsl.expected.msl
index 8bbf1acde1..364dd6b20d 100644
--- a/test/tint/builtins/gen/dpdxCoarse/9581cf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxCoarse/9581cf.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxCoarse_9581cf() {
-  float2 res = dfdx(float2());
+  float2 res = dfdx(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxCoarse/c28641.wgsl.expected.msl b/test/tint/builtins/gen/dpdxCoarse/c28641.wgsl.expected.msl
index 62b43ef782..bd2038c451 100644
--- a/test/tint/builtins/gen/dpdxCoarse/c28641.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxCoarse/c28641.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxCoarse_c28641() {
-  float4 res = dfdx(float4());
+  float4 res = dfdx(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxCoarse/f64d7b.wgsl.expected.msl b/test/tint/builtins/gen/dpdxCoarse/f64d7b.wgsl.expected.msl
index 8c4d03840c..8e524c5789 100644
--- a/test/tint/builtins/gen/dpdxCoarse/f64d7b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxCoarse/f64d7b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxCoarse_f64d7b() {
-  float3 res = dfdx(float3());
+  float3 res = dfdx(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxFine/8c5069.wgsl.expected.msl b/test/tint/builtins/gen/dpdxFine/8c5069.wgsl.expected.msl
index 6b2bc94ac8..4b24b81d03 100644
--- a/test/tint/builtins/gen/dpdxFine/8c5069.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxFine/8c5069.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxFine_8c5069() {
-  float4 res = dfdx(float4());
+  float4 res = dfdx(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxFine/9631de.wgsl.expected.msl b/test/tint/builtins/gen/dpdxFine/9631de.wgsl.expected.msl
index 60055fb30b..c5c465cb58 100644
--- a/test/tint/builtins/gen/dpdxFine/9631de.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxFine/9631de.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxFine_9631de() {
-  float2 res = dfdx(float2());
+  float2 res = dfdx(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdxFine/f92fb6.wgsl.expected.msl b/test/tint/builtins/gen/dpdxFine/f92fb6.wgsl.expected.msl
index 8149873f7c..451171c478 100644
--- a/test/tint/builtins/gen/dpdxFine/f92fb6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdxFine/f92fb6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdxFine_f92fb6() {
-  float3 res = dfdx(float3());
+  float3 res = dfdx(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdy/699a05.wgsl.expected.msl b/test/tint/builtins/gen/dpdy/699a05.wgsl.expected.msl
index f99636537f..9f9a6bb80f 100644
--- a/test/tint/builtins/gen/dpdy/699a05.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdy/699a05.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdy_699a05() {
-  float4 res = dfdy(float4());
+  float4 res = dfdy(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdy/a8b56e.wgsl.expected.msl b/test/tint/builtins/gen/dpdy/a8b56e.wgsl.expected.msl
index 98a29ea033..bf9792eb7b 100644
--- a/test/tint/builtins/gen/dpdy/a8b56e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdy/a8b56e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdy_a8b56e() {
-  float2 res = dfdy(float2());
+  float2 res = dfdy(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdy/feb40f.wgsl.expected.msl b/test/tint/builtins/gen/dpdy/feb40f.wgsl.expected.msl
index d0236bac27..837b41ace5 100644
--- a/test/tint/builtins/gen/dpdy/feb40f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdy/feb40f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdy_feb40f() {
-  float3 res = dfdy(float3());
+  float3 res = dfdy(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyCoarse/3e1ab4.wgsl.expected.msl b/test/tint/builtins/gen/dpdyCoarse/3e1ab4.wgsl.expected.msl
index 83cceec856..1e3b2586c9 100644
--- a/test/tint/builtins/gen/dpdyCoarse/3e1ab4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyCoarse/3e1ab4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyCoarse_3e1ab4() {
-  float2 res = dfdy(float2());
+  float2 res = dfdy(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyCoarse/445d24.wgsl.expected.msl b/test/tint/builtins/gen/dpdyCoarse/445d24.wgsl.expected.msl
index cbc5f5021e..5d36d60bb2 100644
--- a/test/tint/builtins/gen/dpdyCoarse/445d24.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyCoarse/445d24.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyCoarse_445d24() {
-  float4 res = dfdy(float4());
+  float4 res = dfdy(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyCoarse/ae1873.wgsl.expected.msl b/test/tint/builtins/gen/dpdyCoarse/ae1873.wgsl.expected.msl
index 048ceeebf4..c964819980 100644
--- a/test/tint/builtins/gen/dpdyCoarse/ae1873.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyCoarse/ae1873.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyCoarse_ae1873() {
-  float3 res = dfdy(float3());
+  float3 res = dfdy(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyFine/1fb7ab.wgsl.expected.msl b/test/tint/builtins/gen/dpdyFine/1fb7ab.wgsl.expected.msl
index cfbdf5daf1..ee93c95a04 100644
--- a/test/tint/builtins/gen/dpdyFine/1fb7ab.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyFine/1fb7ab.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyFine_1fb7ab() {
-  float3 res = dfdy(float3());
+  float3 res = dfdy(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyFine/d0a648.wgsl.expected.msl b/test/tint/builtins/gen/dpdyFine/d0a648.wgsl.expected.msl
index b728bff555..00a66fbfc2 100644
--- a/test/tint/builtins/gen/dpdyFine/d0a648.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyFine/d0a648.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyFine_d0a648() {
-  float4 res = dfdy(float4());
+  float4 res = dfdy(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/dpdyFine/df33aa.wgsl.expected.msl b/test/tint/builtins/gen/dpdyFine/df33aa.wgsl.expected.msl
index a2e88c9d9c..d82c6bd818 100644
--- a/test/tint/builtins/gen/dpdyFine/df33aa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/dpdyFine/df33aa.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void dpdyFine_df33aa() {
-  float2 res = dfdy(float2());
+  float2 res = dfdy(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/exp/0f70eb.wgsl.expected.msl b/test/tint/builtins/gen/exp/0f70eb.wgsl.expected.msl
index e9b3fdfd40..77dce91bcc 100644
--- a/test/tint/builtins/gen/exp/0f70eb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp/0f70eb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp_0f70eb() {
-  float4 res = exp(float4());
+  float4 res = exp(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp_0f70eb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp/1951e7.wgsl.expected.msl b/test/tint/builtins/gen/exp/1951e7.wgsl.expected.msl
index b350d6861b..f500ae38fe 100644
--- a/test/tint/builtins/gen/exp/1951e7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp/1951e7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp_1951e7() {
-  float2 res = exp(float2());
+  float2 res = exp(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp_1951e7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp/771fd2.wgsl.expected.msl b/test/tint/builtins/gen/exp/771fd2.wgsl.expected.msl
index 86d93082ce..a2910064e4 100644
--- a/test/tint/builtins/gen/exp/771fd2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp/771fd2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp_771fd2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp/d98450.wgsl.expected.msl b/test/tint/builtins/gen/exp/d98450.wgsl.expected.msl
index 7af25631f0..0696f7ad7d 100644
--- a/test/tint/builtins/gen/exp/d98450.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp/d98450.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp_d98450() {
-  float3 res = exp(float3());
+  float3 res = exp(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp_d98450();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp2/1f8680.wgsl.expected.msl b/test/tint/builtins/gen/exp2/1f8680.wgsl.expected.msl
index 4d07e6ba53..5ffded1aab 100644
--- a/test/tint/builtins/gen/exp2/1f8680.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp2/1f8680.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp2_1f8680() {
-  float3 res = exp2(float3());
+  float3 res = exp2(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp2_1f8680();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp2/a9d0a7.wgsl.expected.msl b/test/tint/builtins/gen/exp2/a9d0a7.wgsl.expected.msl
index 98447ae6d7..2658648add 100644
--- a/test/tint/builtins/gen/exp2/a9d0a7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp2/a9d0a7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp2_a9d0a7() {
-  float4 res = exp2(float4());
+  float4 res = exp2(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp2_a9d0a7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp2/d6777c.wgsl.expected.msl b/test/tint/builtins/gen/exp2/d6777c.wgsl.expected.msl
index a94325e47d..22a8a37f3c 100644
--- a/test/tint/builtins/gen/exp2/d6777c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp2/d6777c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void exp2_d6777c() {
-  float2 res = exp2(float2());
+  float2 res = exp2(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp2_d6777c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/exp2/dea523.wgsl.expected.msl b/test/tint/builtins/gen/exp2/dea523.wgsl.expected.msl
index d331243ec2..7c86c2ab5c 100644
--- a/test/tint/builtins/gen/exp2/dea523.wgsl.expected.msl
+++ b/test/tint/builtins/gen/exp2/dea523.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   exp2_dea523();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/12b197.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/12b197.wgsl.expected.msl
index ad92fcff9b..2e07e23e2a 100644
--- a/test/tint/builtins/gen/extractBits/12b197.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/12b197.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint3 tint_extract_bits(uint3 v, uint offset, uint count) {
 }
 
 void extractBits_12b197() {
-  uint3 res = tint_extract_bits(uint3(), 1u, 1u);
+  uint3 res = tint_extract_bits(uint3(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_12b197();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/249874.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/249874.wgsl.expected.msl
index b9fff8e5f7..7b3e4889ce 100644
--- a/test/tint/builtins/gen/extractBits/249874.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/249874.wgsl.expected.msl
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_249874();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/631377.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/631377.wgsl.expected.msl
index 9bb51b666b..7f49492505 100644
--- a/test/tint/builtins/gen/extractBits/631377.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/631377.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint4 tint_extract_bits(uint4 v, uint offset, uint count) {
 }
 
 void extractBits_631377() {
-  uint4 res = tint_extract_bits(uint4(), 1u, 1u);
+  uint4 res = tint_extract_bits(uint4(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_631377();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/a99a8d.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/a99a8d.wgsl.expected.msl
index a1a1b09770..4ce94850a0 100644
--- a/test/tint/builtins/gen/extractBits/a99a8d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/a99a8d.wgsl.expected.msl
@@ -8,7 +8,7 @@ int2 tint_extract_bits(int2 v, uint offset, uint count) {
 }
 
 void extractBits_a99a8d() {
-  int2 res = tint_extract_bits(int2(), 1u, 1u);
+  int2 res = tint_extract_bits(int2(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_a99a8d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/ce81f8.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/ce81f8.wgsl.expected.msl
index bfb975924e..dfa4102c13 100644
--- a/test/tint/builtins/gen/extractBits/ce81f8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/ce81f8.wgsl.expected.msl
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_ce81f8();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/e04f5d.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/e04f5d.wgsl.expected.msl
index b94ad3e3a6..c21c5087a6 100644
--- a/test/tint/builtins/gen/extractBits/e04f5d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/e04f5d.wgsl.expected.msl
@@ -8,7 +8,7 @@ int3 tint_extract_bits(int3 v, uint offset, uint count) {
 }
 
 void extractBits_e04f5d() {
-  int3 res = tint_extract_bits(int3(), 1u, 1u);
+  int3 res = tint_extract_bits(int3(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_e04f5d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/f28f69.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/f28f69.wgsl.expected.msl
index 4f3d529f87..73755c8d44 100644
--- a/test/tint/builtins/gen/extractBits/f28f69.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/f28f69.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint2 tint_extract_bits(uint2 v, uint offset, uint count) {
 }
 
 void extractBits_f28f69() {
-  uint2 res = tint_extract_bits(uint2(), 1u, 1u);
+  uint2 res = tint_extract_bits(uint2(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_f28f69();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/extractBits/fb850f.wgsl.expected.msl b/test/tint/builtins/gen/extractBits/fb850f.wgsl.expected.msl
index 34a9f0ce84..364028f256 100644
--- a/test/tint/builtins/gen/extractBits/fb850f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/extractBits/fb850f.wgsl.expected.msl
@@ -8,7 +8,7 @@ int4 tint_extract_bits(int4 v, uint offset, uint count) {
 }
 
 void extractBits_fb850f() {
-  int4 res = tint_extract_bits(int4(), 1u, 1u);
+  int4 res = tint_extract_bits(int4(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   extractBits_fb850f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/faceForward/5afbd5.wgsl.expected.msl b/test/tint/builtins/gen/faceForward/5afbd5.wgsl.expected.msl
index c539bc7a6b..1abd19f382 100644
--- a/test/tint/builtins/gen/faceForward/5afbd5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/faceForward/5afbd5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void faceForward_5afbd5() {
-  float3 res = faceforward(float3(), float3(), float3());
+  float3 res = faceforward(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   faceForward_5afbd5();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/faceForward/b316e5.wgsl.expected.msl b/test/tint/builtins/gen/faceForward/b316e5.wgsl.expected.msl
index 2e32470d7a..a9d5b3f410 100644
--- a/test/tint/builtins/gen/faceForward/b316e5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/faceForward/b316e5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void faceForward_b316e5() {
-  float4 res = faceforward(float4(), float4(), float4());
+  float4 res = faceforward(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   faceForward_b316e5();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/faceForward/e6908b.wgsl.expected.msl b/test/tint/builtins/gen/faceForward/e6908b.wgsl.expected.msl
index a335ef7df9..50bb2d7cd4 100644
--- a/test/tint/builtins/gen/faceForward/e6908b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/faceForward/e6908b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void faceForward_e6908b() {
-  float2 res = faceforward(float2(), float2(), float2());
+  float2 res = faceforward(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   faceForward_e6908b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/000ff3.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/000ff3.wgsl.expected.msl
index 93ad61bc7d..ae9ad43995 100644
--- a/test/tint/builtins/gen/firstLeadingBit/000ff3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/000ff3.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint4 tint_first_leading_bit(uint4 v) {
 }
 
 void firstLeadingBit_000ff3() {
-  uint4 res = tint_first_leading_bit(uint4());
+  uint4 res = tint_first_leading_bit(uint4(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_000ff3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/35053e.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/35053e.wgsl.expected.msl
index 820fea3d58..e453fa9bfc 100644
--- a/test/tint/builtins/gen/firstLeadingBit/35053e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/35053e.wgsl.expected.msl
@@ -17,7 +17,7 @@ int3 tint_first_leading_bit(int3 v) {
 }
 
 void firstLeadingBit_35053e() {
-  int3 res = tint_first_leading_bit(int3());
+  int3 res = tint_first_leading_bit(int3(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_35053e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/3fd7d0.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/3fd7d0.wgsl.expected.msl
index 2e4d23cd71..8ade8dadff 100644
--- a/test/tint/builtins/gen/firstLeadingBit/3fd7d0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/3fd7d0.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint3 tint_first_leading_bit(uint3 v) {
 }
 
 void firstLeadingBit_3fd7d0() {
-  uint3 res = tint_first_leading_bit(uint3());
+  uint3 res = tint_first_leading_bit(uint3(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_3fd7d0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/57a1a3.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/57a1a3.wgsl.expected.msl
index 0fe7af8d4a..ec9b53998e 100644
--- a/test/tint/builtins/gen/firstLeadingBit/57a1a3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/57a1a3.wgsl.expected.msl
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_57a1a3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/6fe804.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/6fe804.wgsl.expected.msl
index 6a5203bf4c..8e714896ba 100644
--- a/test/tint/builtins/gen/firstLeadingBit/6fe804.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/6fe804.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint2 tint_first_leading_bit(uint2 v) {
 }
 
 void firstLeadingBit_6fe804() {
-  uint2 res = tint_first_leading_bit(uint2());
+  uint2 res = tint_first_leading_bit(uint2(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_6fe804();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/a622c2.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/a622c2.wgsl.expected.msl
index c4bebbb450..8ebf62d74e 100644
--- a/test/tint/builtins/gen/firstLeadingBit/a622c2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/a622c2.wgsl.expected.msl
@@ -17,7 +17,7 @@ int2 tint_first_leading_bit(int2 v) {
 }
 
 void firstLeadingBit_a622c2() {
-  int2 res = tint_first_leading_bit(int2());
+  int2 res = tint_first_leading_bit(int2(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_a622c2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/c1f940.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/c1f940.wgsl.expected.msl
index 24eeb0d4e3..440ad6e35a 100644
--- a/test/tint/builtins/gen/firstLeadingBit/c1f940.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/c1f940.wgsl.expected.msl
@@ -17,7 +17,7 @@ int4 tint_first_leading_bit(int4 v) {
 }
 
 void firstLeadingBit_c1f940() {
-  int4 res = tint_first_leading_bit(int4());
+  int4 res = tint_first_leading_bit(int4(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_c1f940();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstLeadingBit/f0779d.wgsl.expected.msl b/test/tint/builtins/gen/firstLeadingBit/f0779d.wgsl.expected.msl
index 226d827efd..09b520d803 100644
--- a/test/tint/builtins/gen/firstLeadingBit/f0779d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstLeadingBit/f0779d.wgsl.expected.msl
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstLeadingBit_f0779d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/110f2c.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/110f2c.wgsl.expected.msl
index 076113fd33..f3a1a29f48 100644
--- a/test/tint/builtins/gen/firstTrailingBit/110f2c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/110f2c.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint4 tint_first_trailing_bit(uint4 v) {
 }
 
 void firstTrailingBit_110f2c() {
-  uint4 res = tint_first_trailing_bit(uint4());
+  uint4 res = tint_first_trailing_bit(uint4(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_110f2c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/3a2acc.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/3a2acc.wgsl.expected.msl
index 99f5439cc4..fcef721243 100644
--- a/test/tint/builtins/gen/firstTrailingBit/3a2acc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/3a2acc.wgsl.expected.msl
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_3a2acc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/45eb10.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/45eb10.wgsl.expected.msl
index 309b5f713e..eae55ff004 100644
--- a/test/tint/builtins/gen/firstTrailingBit/45eb10.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/45eb10.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint2 tint_first_trailing_bit(uint2 v) {
 }
 
 void firstTrailingBit_45eb10() {
-  uint2 res = tint_first_trailing_bit(uint2());
+  uint2 res = tint_first_trailing_bit(uint2(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_45eb10();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/47d475.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/47d475.wgsl.expected.msl
index 9000618bd8..fba301cc40 100644
--- a/test/tint/builtins/gen/firstTrailingBit/47d475.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/47d475.wgsl.expected.msl
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_47d475();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/50c072.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/50c072.wgsl.expected.msl
index f681cbf2f4..2f96b72c45 100644
--- a/test/tint/builtins/gen/firstTrailingBit/50c072.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/50c072.wgsl.expected.msl
@@ -17,7 +17,7 @@ int2 tint_first_trailing_bit(int2 v) {
 }
 
 void firstTrailingBit_50c072() {
-  int2 res = tint_first_trailing_bit(int2());
+  int2 res = tint_first_trailing_bit(int2(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_50c072();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/7496d6.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/7496d6.wgsl.expected.msl
index 846a9e91a7..b03047a190 100644
--- a/test/tint/builtins/gen/firstTrailingBit/7496d6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/7496d6.wgsl.expected.msl
@@ -17,7 +17,7 @@ int3 tint_first_trailing_bit(int3 v) {
 }
 
 void firstTrailingBit_7496d6() {
-  int3 res = tint_first_trailing_bit(int3());
+  int3 res = tint_first_trailing_bit(int3(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_7496d6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/86551b.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/86551b.wgsl.expected.msl
index 1f3c4e8fd4..d3c9254280 100644
--- a/test/tint/builtins/gen/firstTrailingBit/86551b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/86551b.wgsl.expected.msl
@@ -17,7 +17,7 @@ int4 tint_first_trailing_bit(int4 v) {
 }
 
 void firstTrailingBit_86551b() {
-  int4 res = tint_first_trailing_bit(int4());
+  int4 res = tint_first_trailing_bit(int4(0));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_86551b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/firstTrailingBit/cb51ce.wgsl.expected.msl b/test/tint/builtins/gen/firstTrailingBit/cb51ce.wgsl.expected.msl
index 43d50057d2..0b4fc3e15e 100644
--- a/test/tint/builtins/gen/firstTrailingBit/cb51ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/firstTrailingBit/cb51ce.wgsl.expected.msl
@@ -17,7 +17,7 @@ uint3 tint_first_trailing_bit(uint3 v) {
 }
 
 void firstTrailingBit_cb51ce() {
-  uint3 res = tint_first_trailing_bit(uint3());
+  uint3 res = tint_first_trailing_bit(uint3(0u));
 }
 
 struct tint_symbol {
@@ -26,7 +26,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   firstTrailingBit_cb51ce();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/floor/3bccc4.wgsl.expected.msl b/test/tint/builtins/gen/floor/3bccc4.wgsl.expected.msl
index 74bffe2f0a..17290a10db 100644
--- a/test/tint/builtins/gen/floor/3bccc4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/floor/3bccc4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void floor_3bccc4() {
-  float4 res = floor(float4());
+  float4 res = floor(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   floor_3bccc4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/floor/5fc9ac.wgsl.expected.msl b/test/tint/builtins/gen/floor/5fc9ac.wgsl.expected.msl
index 6f7234b28a..572c9f6efd 100644
--- a/test/tint/builtins/gen/floor/5fc9ac.wgsl.expected.msl
+++ b/test/tint/builtins/gen/floor/5fc9ac.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void floor_5fc9ac() {
-  float2 res = floor(float2());
+  float2 res = floor(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   floor_5fc9ac();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/floor/60d7ea.wgsl.expected.msl b/test/tint/builtins/gen/floor/60d7ea.wgsl.expected.msl
index fbca5d9f19..963c9a6fd8 100644
--- a/test/tint/builtins/gen/floor/60d7ea.wgsl.expected.msl
+++ b/test/tint/builtins/gen/floor/60d7ea.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void floor_60d7ea() {
-  float3 res = floor(float3());
+  float3 res = floor(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   floor_60d7ea();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/floor/66f154.wgsl.expected.msl b/test/tint/builtins/gen/floor/66f154.wgsl.expected.msl
index 1988089e2c..ca6f3e8d96 100644
--- a/test/tint/builtins/gen/floor/66f154.wgsl.expected.msl
+++ b/test/tint/builtins/gen/floor/66f154.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   floor_66f154();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fma/26a7a9.wgsl.expected.msl b/test/tint/builtins/gen/fma/26a7a9.wgsl.expected.msl
index b87b6fe09b..568d3026d3 100644
--- a/test/tint/builtins/gen/fma/26a7a9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fma/26a7a9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fma_26a7a9() {
-  float2 res = fma(float2(), float2(), float2());
+  float2 res = fma(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fma_26a7a9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fma/6a3283.wgsl.expected.msl b/test/tint/builtins/gen/fma/6a3283.wgsl.expected.msl
index a75b54f709..370d6f8799 100644
--- a/test/tint/builtins/gen/fma/6a3283.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fma/6a3283.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fma_6a3283() {
-  float4 res = fma(float4(), float4(), float4());
+  float4 res = fma(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fma_6a3283();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fma/c10ba3.wgsl.expected.msl b/test/tint/builtins/gen/fma/c10ba3.wgsl.expected.msl
index 886ff735da..9f6001806b 100644
--- a/test/tint/builtins/gen/fma/c10ba3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fma/c10ba3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fma_c10ba3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fma/e17c5c.wgsl.expected.msl b/test/tint/builtins/gen/fma/e17c5c.wgsl.expected.msl
index 8c680e11c1..5598d6f9db 100644
--- a/test/tint/builtins/gen/fma/e17c5c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fma/e17c5c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fma_e17c5c() {
-  float3 res = fma(float3(), float3(), float3());
+  float3 res = fma(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fma_e17c5c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fract/8bc1e9.wgsl.expected.msl b/test/tint/builtins/gen/fract/8bc1e9.wgsl.expected.msl
index 0d01c219fa..1e1b110ed8 100644
--- a/test/tint/builtins/gen/fract/8bc1e9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fract/8bc1e9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_8bc1e9() {
-  float4 res = fract(float4());
+  float4 res = fract(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fract_8bc1e9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fract/943cb1.wgsl.expected.msl b/test/tint/builtins/gen/fract/943cb1.wgsl.expected.msl
index f288f7905f..6830fdfd1c 100644
--- a/test/tint/builtins/gen/fract/943cb1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fract/943cb1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_943cb1() {
-  float2 res = fract(float2());
+  float2 res = fract(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fract_943cb1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fract/a49758.wgsl.expected.msl b/test/tint/builtins/gen/fract/a49758.wgsl.expected.msl
index 0d14e6ad63..c3631f2453 100644
--- a/test/tint/builtins/gen/fract/a49758.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fract/a49758.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fract_a49758() {
-  float3 res = fract(float3());
+  float3 res = fract(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fract_a49758();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fract/fa5c71.wgsl.expected.msl b/test/tint/builtins/gen/fract/fa5c71.wgsl.expected.msl
index 0660148b39..50baf320af 100644
--- a/test/tint/builtins/gen/fract/fa5c71.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fract/fa5c71.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   fract_fa5c71();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/frexp/368997.wgsl.expected.msl b/test/tint/builtins/gen/frexp/368997.wgsl.expected.msl
index 852c7f398a..a50831a87b 100644
--- a/test/tint/builtins/gen/frexp/368997.wgsl.expected.msl
+++ b/test/tint/builtins/gen/frexp/368997.wgsl.expected.msl
@@ -13,7 +13,7 @@ frexp_result_vec3 tint_frexp(float3 param_0) {
 }
 
 void frexp_368997() {
-  frexp_result_vec3 res = tint_frexp(float3());
+  frexp_result_vec3 res = tint_frexp(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   frexp_368997();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/frexp/3c4f48.wgsl.expected.msl b/test/tint/builtins/gen/frexp/3c4f48.wgsl.expected.msl
index 11314ca39f..9f471b6bc9 100644
--- a/test/tint/builtins/gen/frexp/3c4f48.wgsl.expected.msl
+++ b/test/tint/builtins/gen/frexp/3c4f48.wgsl.expected.msl
@@ -13,7 +13,7 @@ frexp_result_vec4 tint_frexp(float4 param_0) {
 }
 
 void frexp_3c4f48() {
-  frexp_result_vec4 res = tint_frexp(float4());
+  frexp_result_vec4 res = tint_frexp(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   frexp_3c4f48();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/frexp/4bdfc7.wgsl.expected.msl b/test/tint/builtins/gen/frexp/4bdfc7.wgsl.expected.msl
index f207cc6b6c..a4048c07c1 100644
--- a/test/tint/builtins/gen/frexp/4bdfc7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/frexp/4bdfc7.wgsl.expected.msl
@@ -13,7 +13,7 @@ frexp_result_vec2 tint_frexp(float2 param_0) {
 }
 
 void frexp_4bdfc7() {
-  frexp_result_vec2 res = tint_frexp(float2());
+  frexp_result_vec2 res = tint_frexp(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   frexp_4bdfc7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/frexp/eabd40.wgsl.expected.msl b/test/tint/builtins/gen/frexp/eabd40.wgsl.expected.msl
index 2b5431ac21..2dee3e7758 100644
--- a/test/tint/builtins/gen/frexp/eabd40.wgsl.expected.msl
+++ b/test/tint/builtins/gen/frexp/eabd40.wgsl.expected.msl
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   frexp_eabd40();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/fwidth/5d1b39.wgsl.expected.msl b/test/tint/builtins/gen/fwidth/5d1b39.wgsl.expected.msl
index 671ca4878d..76ca23d020 100644
--- a/test/tint/builtins/gen/fwidth/5d1b39.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidth/5d1b39.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidth_5d1b39() {
-  float3 res = fwidth(float3());
+  float3 res = fwidth(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidth/b83ebb.wgsl.expected.msl b/test/tint/builtins/gen/fwidth/b83ebb.wgsl.expected.msl
index 2dce76c754..e598cf8f5d 100644
--- a/test/tint/builtins/gen/fwidth/b83ebb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidth/b83ebb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidth_b83ebb() {
-  float2 res = fwidth(float2());
+  float2 res = fwidth(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidth/d2ab9a.wgsl.expected.msl b/test/tint/builtins/gen/fwidth/d2ab9a.wgsl.expected.msl
index 076783c53b..a27c2e3407 100644
--- a/test/tint/builtins/gen/fwidth/d2ab9a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidth/d2ab9a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidth_d2ab9a() {
-  float4 res = fwidth(float4());
+  float4 res = fwidth(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthCoarse/1e59d9.wgsl.expected.msl b/test/tint/builtins/gen/fwidthCoarse/1e59d9.wgsl.expected.msl
index b2f9f1e3e2..5ea337182d 100644
--- a/test/tint/builtins/gen/fwidthCoarse/1e59d9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthCoarse/1e59d9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthCoarse_1e59d9() {
-  float3 res = fwidth(float3());
+  float3 res = fwidth(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthCoarse/4e4fc4.wgsl.expected.msl b/test/tint/builtins/gen/fwidthCoarse/4e4fc4.wgsl.expected.msl
index 88298ddaa4..106eea64e7 100644
--- a/test/tint/builtins/gen/fwidthCoarse/4e4fc4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthCoarse/4e4fc4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthCoarse_4e4fc4() {
-  float4 res = fwidth(float4());
+  float4 res = fwidth(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthCoarse/e653f7.wgsl.expected.msl b/test/tint/builtins/gen/fwidthCoarse/e653f7.wgsl.expected.msl
index 63409de801..0bb41831a5 100644
--- a/test/tint/builtins/gen/fwidthCoarse/e653f7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthCoarse/e653f7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthCoarse_e653f7() {
-  float2 res = fwidth(float2());
+  float2 res = fwidth(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthFine/523fdc.wgsl.expected.msl b/test/tint/builtins/gen/fwidthFine/523fdc.wgsl.expected.msl
index ba43d3cd2a..4f36972070 100644
--- a/test/tint/builtins/gen/fwidthFine/523fdc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthFine/523fdc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthFine_523fdc() {
-  float3 res = fwidth(float3());
+  float3 res = fwidth(float3(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthFine/68f4ef.wgsl.expected.msl b/test/tint/builtins/gen/fwidthFine/68f4ef.wgsl.expected.msl
index 7d756f8139..3c4768e233 100644
--- a/test/tint/builtins/gen/fwidthFine/68f4ef.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthFine/68f4ef.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthFine_68f4ef() {
-  float4 res = fwidth(float4());
+  float4 res = fwidth(float4(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/fwidthFine/ff6aa0.wgsl.expected.msl b/test/tint/builtins/gen/fwidthFine/ff6aa0.wgsl.expected.msl
index b7225af28a..b121c887a3 100644
--- a/test/tint/builtins/gen/fwidthFine/ff6aa0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/fwidthFine/ff6aa0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void fwidthFine_ff6aa0() {
-  float2 res = fwidth(float2());
+  float2 res = fwidth(float2(0.0f));
 }
 
 fragment void fragment_main() {
diff --git a/test/tint/builtins/gen/insertBits/3c7ba5.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/3c7ba5.wgsl.expected.msl
index 7f7805a314..e79a66fa9b 100644
--- a/test/tint/builtins/gen/insertBits/3c7ba5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/3c7ba5.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint2 tint_insert_bits(uint2 v, uint2 n, uint offset, uint count) {
 }
 
 void insertBits_3c7ba5() {
-  uint2 res = tint_insert_bits(uint2(), uint2(), 1u, 1u);
+  uint2 res = tint_insert_bits(uint2(0u), uint2(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_3c7ba5();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/428b0b.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/428b0b.wgsl.expected.msl
index 41ff9984ee..1af1c07651 100644
--- a/test/tint/builtins/gen/insertBits/428b0b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/428b0b.wgsl.expected.msl
@@ -8,7 +8,7 @@ int3 tint_insert_bits(int3 v, int3 n, uint offset, uint count) {
 }
 
 void insertBits_428b0b() {
-  int3 res = tint_insert_bits(int3(), int3(), 1u, 1u);
+  int3 res = tint_insert_bits(int3(0), int3(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_428b0b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/51ede1.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/51ede1.wgsl.expected.msl
index 6aebbe577c..df82bfd39f 100644
--- a/test/tint/builtins/gen/insertBits/51ede1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/51ede1.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint4 tint_insert_bits(uint4 v, uint4 n, uint offset, uint count) {
 }
 
 void insertBits_51ede1() {
-  uint4 res = tint_insert_bits(uint4(), uint4(), 1u, 1u);
+  uint4 res = tint_insert_bits(uint4(0u), uint4(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_51ede1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/65468b.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/65468b.wgsl.expected.msl
index d27a671f57..dcee0635dc 100644
--- a/test/tint/builtins/gen/insertBits/65468b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/65468b.wgsl.expected.msl
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_65468b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/87826b.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/87826b.wgsl.expected.msl
index f2533b0c17..fd6a145e78 100644
--- a/test/tint/builtins/gen/insertBits/87826b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/87826b.wgsl.expected.msl
@@ -8,7 +8,7 @@ uint3 tint_insert_bits(uint3 v, uint3 n, uint offset, uint count) {
 }
 
 void insertBits_87826b() {
-  uint3 res = tint_insert_bits(uint3(), uint3(), 1u, 1u);
+  uint3 res = tint_insert_bits(uint3(0u), uint3(0u), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_87826b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/d86978.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/d86978.wgsl.expected.msl
index fd4942789f..8457cb684b 100644
--- a/test/tint/builtins/gen/insertBits/d86978.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/d86978.wgsl.expected.msl
@@ -8,7 +8,7 @@ int4 tint_insert_bits(int4 v, int4 n, uint offset, uint count) {
 }
 
 void insertBits_d86978() {
-  int4 res = tint_insert_bits(int4(), int4(), 1u, 1u);
+  int4 res = tint_insert_bits(int4(0), int4(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_d86978();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/e3e3a2.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/e3e3a2.wgsl.expected.msl
index ebe78e840a..7edeb0ccb3 100644
--- a/test/tint/builtins/gen/insertBits/e3e3a2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/e3e3a2.wgsl.expected.msl
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_e3e3a2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/insertBits/fe6ba6.wgsl.expected.msl b/test/tint/builtins/gen/insertBits/fe6ba6.wgsl.expected.msl
index ced3cb3c8a..e39abe9b63 100644
--- a/test/tint/builtins/gen/insertBits/fe6ba6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/insertBits/fe6ba6.wgsl.expected.msl
@@ -8,7 +8,7 @@ int2 tint_insert_bits(int2 v, int2 n, uint offset, uint count) {
 }
 
 void insertBits_fe6ba6() {
-  int2 res = tint_insert_bits(int2(), int2(), 1u, 1u);
+  int2 res = tint_insert_bits(int2(0), int2(0), 1u, 1u);
 }
 
 struct tint_symbol {
@@ -17,7 +17,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   insertBits_fe6ba6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/inverseSqrt/84407e.wgsl.expected.msl b/test/tint/builtins/gen/inverseSqrt/84407e.wgsl.expected.msl
index a24f6b2ce9..35b0239331 100644
--- a/test/tint/builtins/gen/inverseSqrt/84407e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/inverseSqrt/84407e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   inverseSqrt_84407e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/inverseSqrt/8f2bd2.wgsl.expected.msl b/test/tint/builtins/gen/inverseSqrt/8f2bd2.wgsl.expected.msl
index 1bbeb3a2c4..1076102b13 100644
--- a/test/tint/builtins/gen/inverseSqrt/8f2bd2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/inverseSqrt/8f2bd2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void inverseSqrt_8f2bd2() {
-  float2 res = rsqrt(float2());
+  float2 res = rsqrt(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   inverseSqrt_8f2bd2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/inverseSqrt/b197b1.wgsl.expected.msl b/test/tint/builtins/gen/inverseSqrt/b197b1.wgsl.expected.msl
index 5d49c09bcb..eececb7c6e 100644
--- a/test/tint/builtins/gen/inverseSqrt/b197b1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/inverseSqrt/b197b1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void inverseSqrt_b197b1() {
-  float3 res = rsqrt(float3());
+  float3 res = rsqrt(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   inverseSqrt_b197b1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/inverseSqrt/c22347.wgsl.expected.msl b/test/tint/builtins/gen/inverseSqrt/c22347.wgsl.expected.msl
index 340215277e..eb5f34e1f2 100644
--- a/test/tint/builtins/gen/inverseSqrt/c22347.wgsl.expected.msl
+++ b/test/tint/builtins/gen/inverseSqrt/c22347.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void inverseSqrt_c22347() {
-  float4 res = rsqrt(float4());
+  float4 res = rsqrt(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   inverseSqrt_c22347();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ldexp/a31cdc.wgsl.expected.msl b/test/tint/builtins/gen/ldexp/a31cdc.wgsl.expected.msl
index da7d8a9c38..7530329e41 100644
--- a/test/tint/builtins/gen/ldexp/a31cdc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ldexp/a31cdc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ldexp_a31cdc() {
-  float3 res = ldexp(float3(), int3());
+  float3 res = ldexp(float3(0.0f), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ldexp_a31cdc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ldexp/abd718.wgsl.expected.msl b/test/tint/builtins/gen/ldexp/abd718.wgsl.expected.msl
index b46988bf8a..cdd6395c82 100644
--- a/test/tint/builtins/gen/ldexp/abd718.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ldexp/abd718.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ldexp_abd718() {
-  float2 res = ldexp(float2(), int2());
+  float2 res = ldexp(float2(0.0f), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ldexp_abd718();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ldexp/cc9cde.wgsl.expected.msl b/test/tint/builtins/gen/ldexp/cc9cde.wgsl.expected.msl
index 4d7d64abcf..7b62158bb7 100644
--- a/test/tint/builtins/gen/ldexp/cc9cde.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ldexp/cc9cde.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void ldexp_cc9cde() {
-  float4 res = ldexp(float4(), int4());
+  float4 res = ldexp(float4(0.0f), int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ldexp_cc9cde();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/ldexp/db8b49.wgsl.expected.msl b/test/tint/builtins/gen/ldexp/db8b49.wgsl.expected.msl
index e0e7607665..e9ca7818af 100644
--- a/test/tint/builtins/gen/ldexp/db8b49.wgsl.expected.msl
+++ b/test/tint/builtins/gen/ldexp/db8b49.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   ldexp_db8b49();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/length/056071.wgsl.expected.msl b/test/tint/builtins/gen/length/056071.wgsl.expected.msl
index 689f9dfa06..fe155d7135 100644
--- a/test/tint/builtins/gen/length/056071.wgsl.expected.msl
+++ b/test/tint/builtins/gen/length/056071.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void length_056071() {
-  float res = length(float3());
+  float res = length(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   length_056071();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/length/602a17.wgsl.expected.msl b/test/tint/builtins/gen/length/602a17.wgsl.expected.msl
index ad3b7df824..86bfa31fc7 100644
--- a/test/tint/builtins/gen/length/602a17.wgsl.expected.msl
+++ b/test/tint/builtins/gen/length/602a17.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   length_602a17();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/length/afde8b.wgsl.expected.msl b/test/tint/builtins/gen/length/afde8b.wgsl.expected.msl
index 4e2db8db78..1f44a890ca 100644
--- a/test/tint/builtins/gen/length/afde8b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/length/afde8b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void length_afde8b() {
-  float res = length(float2());
+  float res = length(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   length_afde8b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/length/becebf.wgsl.expected.msl b/test/tint/builtins/gen/length/becebf.wgsl.expected.msl
index 080f45e256..921935f416 100644
--- a/test/tint/builtins/gen/length/becebf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/length/becebf.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void length_becebf() {
-  float res = length(float4());
+  float res = length(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   length_becebf();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log/3da25a.wgsl.expected.msl b/test/tint/builtins/gen/log/3da25a.wgsl.expected.msl
index d87aca8e36..d74a929cf3 100644
--- a/test/tint/builtins/gen/log/3da25a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log/3da25a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log_3da25a() {
-  float4 res = log(float4());
+  float4 res = log(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log_3da25a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log/7114a6.wgsl.expected.msl b/test/tint/builtins/gen/log/7114a6.wgsl.expected.msl
index 5ec0b4da3c..72da25e697 100644
--- a/test/tint/builtins/gen/log/7114a6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log/7114a6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log_7114a6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log/b2ce28.wgsl.expected.msl b/test/tint/builtins/gen/log/b2ce28.wgsl.expected.msl
index a99ad96cce..7081fdc2e7 100644
--- a/test/tint/builtins/gen/log/b2ce28.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log/b2ce28.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log_b2ce28() {
-  float2 res = log(float2());
+  float2 res = log(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log_b2ce28();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log/f4c570.wgsl.expected.msl b/test/tint/builtins/gen/log/f4c570.wgsl.expected.msl
index 2b95150d04..aa3c95f271 100644
--- a/test/tint/builtins/gen/log/f4c570.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log/f4c570.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log_f4c570() {
-  float3 res = log(float3());
+  float3 res = log(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log_f4c570();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log2/4036ed.wgsl.expected.msl b/test/tint/builtins/gen/log2/4036ed.wgsl.expected.msl
index a0e25293c2..e88769f8e0 100644
--- a/test/tint/builtins/gen/log2/4036ed.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log2/4036ed.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log2_4036ed();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log2/902988.wgsl.expected.msl b/test/tint/builtins/gen/log2/902988.wgsl.expected.msl
index e3aa073569..59f605ba69 100644
--- a/test/tint/builtins/gen/log2/902988.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log2/902988.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log2_902988() {
-  float4 res = log2(float4());
+  float4 res = log2(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log2_902988();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log2/adb233.wgsl.expected.msl b/test/tint/builtins/gen/log2/adb233.wgsl.expected.msl
index 44c818c43e..5914d8a171 100644
--- a/test/tint/builtins/gen/log2/adb233.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log2/adb233.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log2_adb233() {
-  float3 res = log2(float3());
+  float3 res = log2(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log2_adb233();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/log2/aea659.wgsl.expected.msl b/test/tint/builtins/gen/log2/aea659.wgsl.expected.msl
index 52b6a1a03a..aad7c2ad49 100644
--- a/test/tint/builtins/gen/log2/aea659.wgsl.expected.msl
+++ b/test/tint/builtins/gen/log2/aea659.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void log2_aea659() {
-  float2 res = log2(float2());
+  float2 res = log2(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   log2_aea659();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/0c0aae.wgsl.expected.msl b/test/tint/builtins/gen/max/0c0aae.wgsl.expected.msl
index 5f95e211f1..55bf47d1e1 100644
--- a/test/tint/builtins/gen/max/0c0aae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/0c0aae.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_0c0aae();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/25eafe.wgsl.expected.msl b/test/tint/builtins/gen/max/25eafe.wgsl.expected.msl
index 31bd611868..a05f1f6be2 100644
--- a/test/tint/builtins/gen/max/25eafe.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/25eafe.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_25eafe() {
-  int3 res = max(int3(), int3());
+  int3 res = max(int3(0), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_25eafe();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/320815.wgsl.expected.msl b/test/tint/builtins/gen/max/320815.wgsl.expected.msl
index a135a3c845..8c62cf0e77 100644
--- a/test/tint/builtins/gen/max/320815.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/320815.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_320815() {
-  uint2 res = max(uint2(), uint2());
+  uint2 res = max(uint2(0u), uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_320815();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/44a39d.wgsl.expected.msl b/test/tint/builtins/gen/max/44a39d.wgsl.expected.msl
index 11575ec42d..80ff77c0fa 100644
--- a/test/tint/builtins/gen/max/44a39d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/44a39d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_44a39d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/453e04.wgsl.expected.msl b/test/tint/builtins/gen/max/453e04.wgsl.expected.msl
index 86de3a08fe..d81a71c0c6 100644
--- a/test/tint/builtins/gen/max/453e04.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/453e04.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_453e04() {
-  uint4 res = max(uint4(), uint4());
+  uint4 res = max(uint4(0u), uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_453e04();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/462050.wgsl.expected.msl b/test/tint/builtins/gen/max/462050.wgsl.expected.msl
index 825b974e5b..638c8b3cfa 100644
--- a/test/tint/builtins/gen/max/462050.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/462050.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_462050() {
-  float2 res = fmax(float2(), float2());
+  float2 res = fmax(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_462050();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/4883ac.wgsl.expected.msl b/test/tint/builtins/gen/max/4883ac.wgsl.expected.msl
index 199fa39682..1bcdcddfa7 100644
--- a/test/tint/builtins/gen/max/4883ac.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/4883ac.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_4883ac() {
-  float3 res = fmax(float3(), float3());
+  float3 res = fmax(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_4883ac();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/85e6bc.wgsl.expected.msl b/test/tint/builtins/gen/max/85e6bc.wgsl.expected.msl
index 48d92f69a3..b48e0db295 100644
--- a/test/tint/builtins/gen/max/85e6bc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/85e6bc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_85e6bc() {
-  int4 res = max(int4(), int4());
+  int4 res = max(int4(0), int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_85e6bc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/a93419.wgsl.expected.msl b/test/tint/builtins/gen/max/a93419.wgsl.expected.msl
index c5d8364e92..06ecc31cee 100644
--- a/test/tint/builtins/gen/max/a93419.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/a93419.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_a93419() {
-  float4 res = fmax(float4(), float4());
+  float4 res = fmax(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_a93419();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/b1b73a.wgsl.expected.msl b/test/tint/builtins/gen/max/b1b73a.wgsl.expected.msl
index 410e0f5b1d..b2635e75e8 100644
--- a/test/tint/builtins/gen/max/b1b73a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/b1b73a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_b1b73a() {
-  uint3 res = max(uint3(), uint3());
+  uint3 res = max(uint3(0u), uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_b1b73a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/ce7c30.wgsl.expected.msl b/test/tint/builtins/gen/max/ce7c30.wgsl.expected.msl
index 50b1952118..3781d03203 100644
--- a/test/tint/builtins/gen/max/ce7c30.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/ce7c30.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_ce7c30();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/max/e8192f.wgsl.expected.msl b/test/tint/builtins/gen/max/e8192f.wgsl.expected.msl
index 7c7f9ac091..528a782145 100644
--- a/test/tint/builtins/gen/max/e8192f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/max/e8192f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void max_e8192f() {
-  int2 res = max(int2(), int2());
+  int2 res = max(int2(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   max_e8192f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/03c7e3.wgsl.expected.msl b/test/tint/builtins/gen/min/03c7e3.wgsl.expected.msl
index f01b97e7fb..246cc613eb 100644
--- a/test/tint/builtins/gen/min/03c7e3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/03c7e3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_03c7e3() {
-  int2 res = min(int2(), int2());
+  int2 res = min(int2(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_03c7e3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/0dc614.wgsl.expected.msl b/test/tint/builtins/gen/min/0dc614.wgsl.expected.msl
index f5f7920d3c..8064a9ebaf 100644
--- a/test/tint/builtins/gen/min/0dc614.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/0dc614.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_0dc614() {
-  uint4 res = min(uint4(), uint4());
+  uint4 res = min(uint4(0u), uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_0dc614();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/3941e1.wgsl.expected.msl b/test/tint/builtins/gen/min/3941e1.wgsl.expected.msl
index ec36ed869a..bdb1516d71 100644
--- a/test/tint/builtins/gen/min/3941e1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/3941e1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_3941e1() {
-  int4 res = min(int4(), int4());
+  int4 res = min(int4(0), int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_3941e1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/46c5d3.wgsl.expected.msl b/test/tint/builtins/gen/min/46c5d3.wgsl.expected.msl
index 3c8a19e0a8..25b2e3b270 100644
--- a/test/tint/builtins/gen/min/46c5d3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/46c5d3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_46c5d3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/82b28f.wgsl.expected.msl b/test/tint/builtins/gen/min/82b28f.wgsl.expected.msl
index 65bbe6b140..4c9e53d1f9 100644
--- a/test/tint/builtins/gen/min/82b28f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/82b28f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_82b28f() {
-  uint2 res = min(uint2(), uint2());
+  uint2 res = min(uint2(0u), uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_82b28f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/93cfc4.wgsl.expected.msl b/test/tint/builtins/gen/min/93cfc4.wgsl.expected.msl
index bf29c67104..80b5e7c842 100644
--- a/test/tint/builtins/gen/min/93cfc4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/93cfc4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_93cfc4() {
-  float3 res = fmin(float3(), float3());
+  float3 res = fmin(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_93cfc4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/a45171.wgsl.expected.msl b/test/tint/builtins/gen/min/a45171.wgsl.expected.msl
index 1a4e902370..4faba50487 100644
--- a/test/tint/builtins/gen/min/a45171.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/a45171.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_a45171() {
-  int3 res = min(int3(), int3());
+  int3 res = min(int3(0), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_a45171();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/aa28ad.wgsl.expected.msl b/test/tint/builtins/gen/min/aa28ad.wgsl.expected.msl
index 8a5d68dea2..4a07ff33be 100644
--- a/test/tint/builtins/gen/min/aa28ad.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/aa28ad.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_aa28ad() {
-  float2 res = fmin(float2(), float2());
+  float2 res = fmin(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_aa28ad();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/af326d.wgsl.expected.msl b/test/tint/builtins/gen/min/af326d.wgsl.expected.msl
index a374198a94..6412c653ce 100644
--- a/test/tint/builtins/gen/min/af326d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/af326d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_af326d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/c70bb7.wgsl.expected.msl b/test/tint/builtins/gen/min/c70bb7.wgsl.expected.msl
index 75707f7a44..74513122ac 100644
--- a/test/tint/builtins/gen/min/c70bb7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/c70bb7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_c70bb7() {
-  uint3 res = min(uint3(), uint3());
+  uint3 res = min(uint3(0u), uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_c70bb7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/c73147.wgsl.expected.msl b/test/tint/builtins/gen/min/c73147.wgsl.expected.msl
index 94a8da2f08..fdc7a83c31 100644
--- a/test/tint/builtins/gen/min/c73147.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/c73147.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_c73147();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/min/c76fa6.wgsl.expected.msl b/test/tint/builtins/gen/min/c76fa6.wgsl.expected.msl
index 7af41b68e6..b8e3b36422 100644
--- a/test/tint/builtins/gen/min/c76fa6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/min/c76fa6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void min_c76fa6() {
-  float4 res = fmin(float4(), float4());
+  float4 res = fmin(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   min_c76fa6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/0c8c33.wgsl.expected.msl b/test/tint/builtins/gen/mix/0c8c33.wgsl.expected.msl
index 8f33abfbb1..74bb3170ee 100644
--- a/test/tint/builtins/gen/mix/0c8c33.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/0c8c33.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_0c8c33() {
-  float3 res = mix(float3(), float3(), float3());
+  float3 res = mix(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_0c8c33();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/1faeb1.wgsl.expected.msl b/test/tint/builtins/gen/mix/1faeb1.wgsl.expected.msl
index 89175cf9ff..4588bf2b38 100644
--- a/test/tint/builtins/gen/mix/1faeb1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/1faeb1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_1faeb1() {
-  float4 res = mix(float4(), float4(), 1.0f);
+  float4 res = mix(float4(0.0f), float4(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_1faeb1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/2fadab.wgsl.expected.msl b/test/tint/builtins/gen/mix/2fadab.wgsl.expected.msl
index e6ce43a894..027e303850 100644
--- a/test/tint/builtins/gen/mix/2fadab.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/2fadab.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_2fadab() {
-  float2 res = mix(float2(), float2(), 1.0f);
+  float2 res = mix(float2(0.0f), float2(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_2fadab();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/315264.wgsl.expected.msl b/test/tint/builtins/gen/mix/315264.wgsl.expected.msl
index a9110a3e42..877991d603 100644
--- a/test/tint/builtins/gen/mix/315264.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/315264.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_315264() {
-  float3 res = mix(float3(), float3(), 1.0f);
+  float3 res = mix(float3(0.0f), float3(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_315264();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/4f0b5e.wgsl.expected.msl b/test/tint/builtins/gen/mix/4f0b5e.wgsl.expected.msl
index 1f7906dd44..3859b69a57 100644
--- a/test/tint/builtins/gen/mix/4f0b5e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/4f0b5e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_4f0b5e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/6f8adc.wgsl.expected.msl b/test/tint/builtins/gen/mix/6f8adc.wgsl.expected.msl
index 699f297ed7..8792e186a3 100644
--- a/test/tint/builtins/gen/mix/6f8adc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/6f8adc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_6f8adc() {
-  float2 res = mix(float2(), float2(), float2());
+  float2 res = mix(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_6f8adc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/mix/c37ede.wgsl.expected.msl b/test/tint/builtins/gen/mix/c37ede.wgsl.expected.msl
index abe0dc7d29..1100892681 100644
--- a/test/tint/builtins/gen/mix/c37ede.wgsl.expected.msl
+++ b/test/tint/builtins/gen/mix/c37ede.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void mix_c37ede() {
-  float4 res = mix(float4(), float4(), float4());
+  float4 res = mix(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   mix_c37ede();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/modf/180fed.wgsl.expected.msl b/test/tint/builtins/gen/modf/180fed.wgsl.expected.msl
index d1f6d8bf6a..b7ba9eb670 100644
--- a/test/tint/builtins/gen/modf/180fed.wgsl.expected.msl
+++ b/test/tint/builtins/gen/modf/180fed.wgsl.expected.msl
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   modf_180fed();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/modf/9b75f7.wgsl.expected.msl b/test/tint/builtins/gen/modf/9b75f7.wgsl.expected.msl
index fcf035d315..7fca0841c3 100644
--- a/test/tint/builtins/gen/modf/9b75f7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/modf/9b75f7.wgsl.expected.msl
@@ -13,7 +13,7 @@ modf_result_vec3 tint_modf(float3 param_0) {
 }
 
 void modf_9b75f7() {
-  modf_result_vec3 res = tint_modf(float3());
+  modf_result_vec3 res = tint_modf(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   modf_9b75f7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/modf/ec2dbc.wgsl.expected.msl b/test/tint/builtins/gen/modf/ec2dbc.wgsl.expected.msl
index a62a85c5fc..7fb92c2e65 100644
--- a/test/tint/builtins/gen/modf/ec2dbc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/modf/ec2dbc.wgsl.expected.msl
@@ -13,7 +13,7 @@ modf_result_vec4 tint_modf(float4 param_0) {
 }
 
 void modf_ec2dbc() {
-  modf_result_vec4 res = tint_modf(float4());
+  modf_result_vec4 res = tint_modf(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   modf_ec2dbc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/modf/f5f20d.wgsl.expected.msl b/test/tint/builtins/gen/modf/f5f20d.wgsl.expected.msl
index f02e88b4d4..a537f67ec0 100644
--- a/test/tint/builtins/gen/modf/f5f20d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/modf/f5f20d.wgsl.expected.msl
@@ -13,7 +13,7 @@ modf_result_vec2 tint_modf(float2 param_0) {
 }
 
 void modf_f5f20d() {
-  modf_result_vec2 res = tint_modf(float2());
+  modf_result_vec2 res = tint_modf(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -22,7 +22,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   modf_f5f20d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/normalize/64d8c0.wgsl.expected.msl b/test/tint/builtins/gen/normalize/64d8c0.wgsl.expected.msl
index 844c52a795..e65cbfa18b 100644
--- a/test/tint/builtins/gen/normalize/64d8c0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/normalize/64d8c0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void normalize_64d8c0() {
-  float3 res = normalize(float3());
+  float3 res = normalize(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   normalize_64d8c0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/normalize/9a0aab.wgsl.expected.msl b/test/tint/builtins/gen/normalize/9a0aab.wgsl.expected.msl
index 7dd5c0a8da..7883710f2f 100644
--- a/test/tint/builtins/gen/normalize/9a0aab.wgsl.expected.msl
+++ b/test/tint/builtins/gen/normalize/9a0aab.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void normalize_9a0aab() {
-  float4 res = normalize(float4());
+  float4 res = normalize(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   normalize_9a0aab();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/normalize/fc2ef1.wgsl.expected.msl b/test/tint/builtins/gen/normalize/fc2ef1.wgsl.expected.msl
index 1464466ca2..18c8099526 100644
--- a/test/tint/builtins/gen/normalize/fc2ef1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/normalize/fc2ef1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void normalize_fc2ef1() {
-  float2 res = normalize(float2());
+  float2 res = normalize(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   normalize_fc2ef1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pack2x16float/0e97b3.wgsl.expected.msl b/test/tint/builtins/gen/pack2x16float/0e97b3.wgsl.expected.msl
index 026b652428..d3c14f8965 100644
--- a/test/tint/builtins/gen/pack2x16float/0e97b3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pack2x16float/0e97b3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pack2x16float_0e97b3() {
-  uint res = as_type<uint>(half2(float2()));
+  uint res = as_type<uint>(half2(float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pack2x16float_0e97b3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pack2x16snorm/6c169b.wgsl.expected.msl b/test/tint/builtins/gen/pack2x16snorm/6c169b.wgsl.expected.msl
index 21fed1a521..7c11475f4b 100644
--- a/test/tint/builtins/gen/pack2x16snorm/6c169b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pack2x16snorm/6c169b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pack2x16snorm_6c169b() {
-  uint res = pack_float_to_snorm2x16(float2());
+  uint res = pack_float_to_snorm2x16(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pack2x16snorm_6c169b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pack2x16unorm/0f08e4.wgsl.expected.msl b/test/tint/builtins/gen/pack2x16unorm/0f08e4.wgsl.expected.msl
index f095a39852..5661b9829f 100644
--- a/test/tint/builtins/gen/pack2x16unorm/0f08e4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pack2x16unorm/0f08e4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pack2x16unorm_0f08e4() {
-  uint res = pack_float_to_unorm2x16(float2());
+  uint res = pack_float_to_unorm2x16(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pack2x16unorm_0f08e4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pack4x8snorm/4d22e7.wgsl.expected.msl b/test/tint/builtins/gen/pack4x8snorm/4d22e7.wgsl.expected.msl
index a38de4d286..5af9d4b544 100644
--- a/test/tint/builtins/gen/pack4x8snorm/4d22e7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pack4x8snorm/4d22e7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pack4x8snorm_4d22e7() {
-  uint res = pack_float_to_snorm4x8(float4());
+  uint res = pack_float_to_snorm4x8(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pack4x8snorm_4d22e7();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pack4x8unorm/95c456.wgsl.expected.msl b/test/tint/builtins/gen/pack4x8unorm/95c456.wgsl.expected.msl
index 55732e1f8d..be93a802ed 100644
--- a/test/tint/builtins/gen/pack4x8unorm/95c456.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pack4x8unorm/95c456.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pack4x8unorm_95c456() {
-  uint res = pack_float_to_unorm4x8(float4());
+  uint res = pack_float_to_unorm4x8(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pack4x8unorm_95c456();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pow/04a908.wgsl.expected.msl b/test/tint/builtins/gen/pow/04a908.wgsl.expected.msl
index e1f2e81684..3e8d0c4944 100644
--- a/test/tint/builtins/gen/pow/04a908.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pow/04a908.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pow_04a908() {
-  float4 res = pow(float4(), float4());
+  float4 res = pow(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pow_04a908();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pow/46e029.wgsl.expected.msl b/test/tint/builtins/gen/pow/46e029.wgsl.expected.msl
index c2d8df388b..bd126032d2 100644
--- a/test/tint/builtins/gen/pow/46e029.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pow/46e029.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pow_46e029();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pow/4a46c9.wgsl.expected.msl b/test/tint/builtins/gen/pow/4a46c9.wgsl.expected.msl
index 69a27253c5..b7eabb8677 100644
--- a/test/tint/builtins/gen/pow/4a46c9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pow/4a46c9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pow_4a46c9() {
-  float3 res = pow(float3(), float3());
+  float3 res = pow(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pow_4a46c9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/pow/e60ea5.wgsl.expected.msl b/test/tint/builtins/gen/pow/e60ea5.wgsl.expected.msl
index 4326466f97..c24658d49d 100644
--- a/test/tint/builtins/gen/pow/e60ea5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/pow/e60ea5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void pow_e60ea5() {
-  float2 res = pow(float2(), float2());
+  float2 res = pow(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   pow_e60ea5();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/radians/09b7fc.wgsl.expected.msl b/test/tint/builtins/gen/radians/09b7fc.wgsl.expected.msl
index 00e73d18f5..895e01bba4 100644
--- a/test/tint/builtins/gen/radians/09b7fc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/radians/09b7fc.wgsl.expected.msl
@@ -7,7 +7,7 @@ float4 tint_radians(float4 param_0) {
 }
 
 void radians_09b7fc() {
-  float4 res = tint_radians(float4());
+  float4 res = tint_radians(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   radians_09b7fc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/radians/61687a.wgsl.expected.msl b/test/tint/builtins/gen/radians/61687a.wgsl.expected.msl
index 7a7e7e4f7a..00c5efa334 100644
--- a/test/tint/builtins/gen/radians/61687a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/radians/61687a.wgsl.expected.msl
@@ -7,7 +7,7 @@ float2 tint_radians(float2 param_0) {
 }
 
 void radians_61687a() {
-  float2 res = tint_radians(float2());
+  float2 res = tint_radians(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   radians_61687a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/radians/6b0ff2.wgsl.expected.msl b/test/tint/builtins/gen/radians/6b0ff2.wgsl.expected.msl
index e99ae97e94..074b46d1ae 100644
--- a/test/tint/builtins/gen/radians/6b0ff2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/radians/6b0ff2.wgsl.expected.msl
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   radians_6b0ff2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/radians/f96258.wgsl.expected.msl b/test/tint/builtins/gen/radians/f96258.wgsl.expected.msl
index 1667cdb901..2864b49ca0 100644
--- a/test/tint/builtins/gen/radians/f96258.wgsl.expected.msl
+++ b/test/tint/builtins/gen/radians/f96258.wgsl.expected.msl
@@ -7,7 +7,7 @@ float3 tint_radians(float3 param_0) {
 }
 
 void radians_f96258() {
-  float3 res = tint_radians(float3());
+  float3 res = tint_radians(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -16,7 +16,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   radians_f96258();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reflect/05357e.wgsl.expected.msl b/test/tint/builtins/gen/reflect/05357e.wgsl.expected.msl
index 83ddfd9a4a..2ba2389e5e 100644
--- a/test/tint/builtins/gen/reflect/05357e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reflect/05357e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reflect_05357e() {
-  float4 res = reflect(float4(), float4());
+  float4 res = reflect(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reflect_05357e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reflect/b61e10.wgsl.expected.msl b/test/tint/builtins/gen/reflect/b61e10.wgsl.expected.msl
index 8f70c6d5f0..8e773b6294 100644
--- a/test/tint/builtins/gen/reflect/b61e10.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reflect/b61e10.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reflect_b61e10() {
-  float2 res = reflect(float2(), float2());
+  float2 res = reflect(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reflect_b61e10();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reflect/f47fdb.wgsl.expected.msl b/test/tint/builtins/gen/reflect/f47fdb.wgsl.expected.msl
index c3d161418b..74e2a3a722 100644
--- a/test/tint/builtins/gen/reflect/f47fdb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reflect/f47fdb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reflect_f47fdb() {
-  float3 res = reflect(float3(), float3());
+  float3 res = reflect(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reflect_f47fdb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/refract/7e02e6.wgsl.expected.msl b/test/tint/builtins/gen/refract/7e02e6.wgsl.expected.msl
index 9fedc200aa..d7bf57c7d3 100644
--- a/test/tint/builtins/gen/refract/7e02e6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/refract/7e02e6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void refract_7e02e6() {
-  float4 res = refract(float4(), float4(), 1.0f);
+  float4 res = refract(float4(0.0f), float4(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   refract_7e02e6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/refract/cbc1d2.wgsl.expected.msl b/test/tint/builtins/gen/refract/cbc1d2.wgsl.expected.msl
index ceb3738cba..410a9a6b60 100644
--- a/test/tint/builtins/gen/refract/cbc1d2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/refract/cbc1d2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void refract_cbc1d2() {
-  float3 res = refract(float3(), float3(), 1.0f);
+  float3 res = refract(float3(0.0f), float3(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   refract_cbc1d2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/refract/cd905f.wgsl.expected.msl b/test/tint/builtins/gen/refract/cd905f.wgsl.expected.msl
index 878c80c078..e0fee6d018 100644
--- a/test/tint/builtins/gen/refract/cd905f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/refract/cd905f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void refract_cd905f() {
-  float2 res = refract(float2(), float2(), 1.0f);
+  float2 res = refract(float2(0.0f), float2(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   refract_cd905f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/222177.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/222177.wgsl.expected.msl
index 410b12017f..f3b8e8a87e 100644
--- a/test/tint/builtins/gen/reverseBits/222177.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/222177.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_222177() {
-  int2 res = reverse_bits(int2());
+  int2 res = reverse_bits(int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_222177();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/35fea9.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/35fea9.wgsl.expected.msl
index 7cca1fe44d..9efd87c725 100644
--- a/test/tint/builtins/gen/reverseBits/35fea9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/35fea9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_35fea9() {
-  uint4 res = reverse_bits(uint4());
+  uint4 res = reverse_bits(uint4(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_35fea9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/4dbd6f.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/4dbd6f.wgsl.expected.msl
index 918b5e0390..97741fbf8e 100644
--- a/test/tint/builtins/gen/reverseBits/4dbd6f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/4dbd6f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_4dbd6f() {
-  int4 res = reverse_bits(int4());
+  int4 res = reverse_bits(int4(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_4dbd6f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/7c4269.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/7c4269.wgsl.expected.msl
index 0d2865498a..90d843c897 100644
--- a/test/tint/builtins/gen/reverseBits/7c4269.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/7c4269.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_7c4269();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/a6ccd4.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/a6ccd4.wgsl.expected.msl
index 5c7819ea91..772087ded7 100644
--- a/test/tint/builtins/gen/reverseBits/a6ccd4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/a6ccd4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_a6ccd4() {
-  uint3 res = reverse_bits(uint3());
+  uint3 res = reverse_bits(uint3(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_a6ccd4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/c21bc1.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/c21bc1.wgsl.expected.msl
index b960eec3a0..783f8e25ca 100644
--- a/test/tint/builtins/gen/reverseBits/c21bc1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/c21bc1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_c21bc1() {
-  int3 res = reverse_bits(int3());
+  int3 res = reverse_bits(int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_c21bc1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/e1f4c1.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/e1f4c1.wgsl.expected.msl
index fc9ebd295f..b4f660bd7a 100644
--- a/test/tint/builtins/gen/reverseBits/e1f4c1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/e1f4c1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void reverseBits_e1f4c1() {
-  uint2 res = reverse_bits(uint2());
+  uint2 res = reverse_bits(uint2(0u));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_e1f4c1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/reverseBits/e31adf.wgsl.expected.msl b/test/tint/builtins/gen/reverseBits/e31adf.wgsl.expected.msl
index fb3d3f2a1f..c850796c2e 100644
--- a/test/tint/builtins/gen/reverseBits/e31adf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/reverseBits/e31adf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   reverseBits_e31adf();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/round/106c0b.wgsl.expected.msl b/test/tint/builtins/gen/round/106c0b.wgsl.expected.msl
index be166bff69..def3309518 100644
--- a/test/tint/builtins/gen/round/106c0b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/round/106c0b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void round_106c0b() {
-  float4 res = rint(float4());
+  float4 res = rint(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   round_106c0b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/round/1c7897.wgsl.expected.msl b/test/tint/builtins/gen/round/1c7897.wgsl.expected.msl
index 85dda287ed..c808255268 100644
--- a/test/tint/builtins/gen/round/1c7897.wgsl.expected.msl
+++ b/test/tint/builtins/gen/round/1c7897.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void round_1c7897() {
-  float3 res = rint(float3());
+  float3 res = rint(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   round_1c7897();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/round/52c84d.wgsl.expected.msl b/test/tint/builtins/gen/round/52c84d.wgsl.expected.msl
index 87e2b215f8..c1145e2498 100644
--- a/test/tint/builtins/gen/round/52c84d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/round/52c84d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void round_52c84d() {
-  float2 res = rint(float2());
+  float2 res = rint(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   round_52c84d();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/round/9edc38.wgsl.expected.msl b/test/tint/builtins/gen/round/9edc38.wgsl.expected.msl
index a3f14ae5ba..b6406d5ed7 100644
--- a/test/tint/builtins/gen/round/9edc38.wgsl.expected.msl
+++ b/test/tint/builtins/gen/round/9edc38.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   round_9edc38();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/00b848.wgsl.expected.msl b/test/tint/builtins/gen/select/00b848.wgsl.expected.msl
index 79cd7058dd..3391fae0e2 100644
--- a/test/tint/builtins/gen/select/00b848.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/00b848.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_00b848() {
-  int2 res = select(int2(), int2(), bool2());
+  int2 res = select(int2(0), int2(0), bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_00b848();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/01e2cd.wgsl.expected.msl b/test/tint/builtins/gen/select/01e2cd.wgsl.expected.msl
index f7618aec63..49db474258 100644
--- a/test/tint/builtins/gen/select/01e2cd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/01e2cd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_01e2cd() {
-  int3 res = select(int3(), int3(), bool3());
+  int3 res = select(int3(0), int3(0), bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_01e2cd();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/087ea4.wgsl.expected.msl b/test/tint/builtins/gen/select/087ea4.wgsl.expected.msl
index 4838d99ab8..49588896d0 100644
--- a/test/tint/builtins/gen/select/087ea4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/087ea4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_087ea4() {
-  uint4 res = select(uint4(), uint4(), bool());
+  uint4 res = select(uint4(0u), uint4(0u), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_087ea4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/1e960b.wgsl.expected.msl b/test/tint/builtins/gen/select/1e960b.wgsl.expected.msl
index 87b11508d2..b59ac22331 100644
--- a/test/tint/builtins/gen/select/1e960b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/1e960b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_1e960b() {
-  uint2 res = select(uint2(), uint2(), bool2());
+  uint2 res = select(uint2(0u), uint2(0u), bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_1e960b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/266aff.wgsl.expected.msl b/test/tint/builtins/gen/select/266aff.wgsl.expected.msl
index 56688e6b0e..138dfe6ef4 100644
--- a/test/tint/builtins/gen/select/266aff.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/266aff.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_266aff() {
-  float2 res = select(float2(), float2(), bool2());
+  float2 res = select(float2(0.0f), float2(0.0f), bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_266aff();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/28a27e.wgsl.expected.msl b/test/tint/builtins/gen/select/28a27e.wgsl.expected.msl
index 2e21e18b98..ce36281ad4 100644
--- a/test/tint/builtins/gen/select/28a27e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/28a27e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_28a27e() {
-  uint3 res = select(uint3(), uint3(), bool3());
+  uint3 res = select(uint3(0u), uint3(0u), bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_28a27e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/3c25ce.wgsl.expected.msl b/test/tint/builtins/gen/select/3c25ce.wgsl.expected.msl
index 8a73c3639b..c5ce477b26 100644
--- a/test/tint/builtins/gen/select/3c25ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/3c25ce.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_3c25ce() {
-  bool3 res = select(bool3(), bool3(), bool());
+  bool3 res = select(bool3(false), bool3(false), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_3c25ce();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/416e14.wgsl.expected.msl b/test/tint/builtins/gen/select/416e14.wgsl.expected.msl
index 1e57158875..57f9b67bda 100644
--- a/test/tint/builtins/gen/select/416e14.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/416e14.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_416e14() {
-  float res = select(1.0f, 1.0f, bool());
+  float res = select(1.0f, 1.0f, false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_416e14();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/51b047.wgsl.expected.msl b/test/tint/builtins/gen/select/51b047.wgsl.expected.msl
index 42e6e3af88..bcfb862895 100644
--- a/test/tint/builtins/gen/select/51b047.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/51b047.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_51b047() {
-  uint2 res = select(uint2(), uint2(), bool());
+  uint2 res = select(uint2(0u), uint2(0u), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_51b047();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/713567.wgsl.expected.msl b/test/tint/builtins/gen/select/713567.wgsl.expected.msl
index 6767e85a83..38edfd08ac 100644
--- a/test/tint/builtins/gen/select/713567.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/713567.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_713567() {
-  float4 res = select(float4(), float4(), bool());
+  float4 res = select(float4(0.0f), float4(0.0f), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_713567();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/78be5f.wgsl.expected.msl b/test/tint/builtins/gen/select/78be5f.wgsl.expected.msl
index 8c39ad3b71..8338204784 100644
--- a/test/tint/builtins/gen/select/78be5f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/78be5f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_78be5f() {
-  float3 res = select(float3(), float3(), bool());
+  float3 res = select(float3(0.0f), float3(0.0f), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_78be5f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/80a9a9.wgsl.expected.msl b/test/tint/builtins/gen/select/80a9a9.wgsl.expected.msl
index 37b2e99851..21229b0652 100644
--- a/test/tint/builtins/gen/select/80a9a9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/80a9a9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_80a9a9() {
-  bool3 res = select(bool3(), bool3(), bool3());
+  bool3 res = select(bool3(false), bool3(false), bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_80a9a9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/8fa62c.wgsl.expected.msl b/test/tint/builtins/gen/select/8fa62c.wgsl.expected.msl
index 4c9e887dc1..be4667a15e 100644
--- a/test/tint/builtins/gen/select/8fa62c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/8fa62c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_8fa62c() {
-  int3 res = select(int3(), int3(), bool());
+  int3 res = select(int3(0), int3(0), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_8fa62c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/99f883.wgsl.expected.msl b/test/tint/builtins/gen/select/99f883.wgsl.expected.msl
index 4234994b3d..a7efb93075 100644
--- a/test/tint/builtins/gen/select/99f883.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/99f883.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_99f883() {
-  uint res = select(1u, 1u, bool());
+  uint res = select(1u, 1u, false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_99f883();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/a2860e.wgsl.expected.msl b/test/tint/builtins/gen/select/a2860e.wgsl.expected.msl
index c3b3db641a..c0de41ced8 100644
--- a/test/tint/builtins/gen/select/a2860e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/a2860e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_a2860e() {
-  int4 res = select(int4(), int4(), bool4());
+  int4 res = select(int4(0), int4(0), bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_a2860e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/ab069f.wgsl.expected.msl b/test/tint/builtins/gen/select/ab069f.wgsl.expected.msl
index dd19206f24..602f22f7b0 100644
--- a/test/tint/builtins/gen/select/ab069f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/ab069f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_ab069f() {
-  int4 res = select(int4(), int4(), bool());
+  int4 res = select(int4(0), int4(0), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_ab069f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/b04721.wgsl.expected.msl b/test/tint/builtins/gen/select/b04721.wgsl.expected.msl
index 2b88455ccc..be23b83a90 100644
--- a/test/tint/builtins/gen/select/b04721.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/b04721.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_b04721() {
-  uint3 res = select(uint3(), uint3(), bool());
+  uint3 res = select(uint3(0u), uint3(0u), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_b04721();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/bb447f.wgsl.expected.msl b/test/tint/builtins/gen/select/bb447f.wgsl.expected.msl
index d1517c9e9a..bfbe2ed13c 100644
--- a/test/tint/builtins/gen/select/bb447f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/bb447f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_bb447f() {
-  int2 res = select(int2(), int2(), bool());
+  int2 res = select(int2(0), int2(0), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_bb447f();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/bb8aae.wgsl.expected.msl b/test/tint/builtins/gen/select/bb8aae.wgsl.expected.msl
index 67c11796dd..bd80ddf95c 100644
--- a/test/tint/builtins/gen/select/bb8aae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/bb8aae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_bb8aae() {
-  float4 res = select(float4(), float4(), bool4());
+  float4 res = select(float4(0.0f), float4(0.0f), bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_bb8aae();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/bf3d29.wgsl.expected.msl b/test/tint/builtins/gen/select/bf3d29.wgsl.expected.msl
index af8a59e521..ba3d3553f4 100644
--- a/test/tint/builtins/gen/select/bf3d29.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/bf3d29.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_bf3d29() {
-  float2 res = select(float2(), float2(), bool());
+  float2 res = select(float2(0.0f), float2(0.0f), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_bf3d29();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/c31f9e.wgsl.expected.msl b/test/tint/builtins/gen/select/c31f9e.wgsl.expected.msl
index 8e2a3b42e2..de68201e51 100644
--- a/test/tint/builtins/gen/select/c31f9e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/c31f9e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_c31f9e() {
-  bool res = select(bool(), bool(), bool());
+  bool res = select(false, false, false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_c31f9e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/c41bd1.wgsl.expected.msl b/test/tint/builtins/gen/select/c41bd1.wgsl.expected.msl
index a344539080..fa1cf9a96e 100644
--- a/test/tint/builtins/gen/select/c41bd1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/c41bd1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_c41bd1() {
-  bool4 res = select(bool4(), bool4(), bool());
+  bool4 res = select(bool4(false), bool4(false), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_c41bd1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/c4a4ef.wgsl.expected.msl b/test/tint/builtins/gen/select/c4a4ef.wgsl.expected.msl
index 69830334c2..ca4f7ce7e9 100644
--- a/test/tint/builtins/gen/select/c4a4ef.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/c4a4ef.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_c4a4ef() {
-  uint4 res = select(uint4(), uint4(), bool4());
+  uint4 res = select(uint4(0u), uint4(0u), bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_c4a4ef();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/cb9301.wgsl.expected.msl b/test/tint/builtins/gen/select/cb9301.wgsl.expected.msl
index 3854184a2f..f075cbdc50 100644
--- a/test/tint/builtins/gen/select/cb9301.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/cb9301.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_cb9301() {
-  bool2 res = select(bool2(), bool2(), bool2());
+  bool2 res = select(bool2(false), bool2(false), bool2(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_cb9301();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/e3e028.wgsl.expected.msl b/test/tint/builtins/gen/select/e3e028.wgsl.expected.msl
index 6ea09b4777..49bdf1d767 100644
--- a/test/tint/builtins/gen/select/e3e028.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/e3e028.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_e3e028() {
-  bool4 res = select(bool4(), bool4(), bool4());
+  bool4 res = select(bool4(false), bool4(false), bool4(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_e3e028();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/ebfea2.wgsl.expected.msl b/test/tint/builtins/gen/select/ebfea2.wgsl.expected.msl
index ad19ed3f8d..f1adced65e 100644
--- a/test/tint/builtins/gen/select/ebfea2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/ebfea2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_ebfea2() {
-  float3 res = select(float3(), float3(), bool3());
+  float3 res = select(float3(0.0f), float3(0.0f), bool3(false));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_ebfea2();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/ed8a15.wgsl.expected.msl b/test/tint/builtins/gen/select/ed8a15.wgsl.expected.msl
index 86b86d5262..a584fb047f 100644
--- a/test/tint/builtins/gen/select/ed8a15.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/ed8a15.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_ed8a15() {
-  int res = select(1, 1, bool());
+  int res = select(1, 1, false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_ed8a15();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/select/fb7e53.wgsl.expected.msl b/test/tint/builtins/gen/select/fb7e53.wgsl.expected.msl
index 7bd77e5ef3..7dc1f08c99 100644
--- a/test/tint/builtins/gen/select/fb7e53.wgsl.expected.msl
+++ b/test/tint/builtins/gen/select/fb7e53.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void select_fb7e53() {
-  bool2 res = select(bool2(), bool2(), bool());
+  bool2 res = select(bool2(false), bool2(false), false);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   select_fb7e53();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sign/159665.wgsl.expected.msl b/test/tint/builtins/gen/sign/159665.wgsl.expected.msl
index 2ab6b4f438..bab4bf4c5c 100644
--- a/test/tint/builtins/gen/sign/159665.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sign/159665.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sign_159665() {
-  float3 res = sign(float3());
+  float3 res = sign(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sign_159665();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sign/b8f634.wgsl.expected.msl b/test/tint/builtins/gen/sign/b8f634.wgsl.expected.msl
index 70a13b58eb..c911824eba 100644
--- a/test/tint/builtins/gen/sign/b8f634.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sign/b8f634.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sign_b8f634() {
-  float4 res = sign(float4());
+  float4 res = sign(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sign_b8f634();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sign/d065d8.wgsl.expected.msl b/test/tint/builtins/gen/sign/d065d8.wgsl.expected.msl
index 2fd18968f8..4255b7017b 100644
--- a/test/tint/builtins/gen/sign/d065d8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sign/d065d8.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sign_d065d8() {
-  float2 res = sign(float2());
+  float2 res = sign(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sign_d065d8();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sign/dd790e.wgsl.expected.msl b/test/tint/builtins/gen/sign/dd790e.wgsl.expected.msl
index 655bb10e42..a5f99f63cf 100644
--- a/test/tint/builtins/gen/sign/dd790e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sign/dd790e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sign_dd790e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sin/01f241.wgsl.expected.msl b/test/tint/builtins/gen/sin/01f241.wgsl.expected.msl
index af988a628c..8b3c830882 100644
--- a/test/tint/builtins/gen/sin/01f241.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sin/01f241.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sin_01f241() {
-  float3 res = sin(float3());
+  float3 res = sin(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sin_01f241();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sin/4e3979.wgsl.expected.msl b/test/tint/builtins/gen/sin/4e3979.wgsl.expected.msl
index 90f5a93970..84dc10b888 100644
--- a/test/tint/builtins/gen/sin/4e3979.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sin/4e3979.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sin_4e3979() {
-  float4 res = sin(float4());
+  float4 res = sin(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sin_4e3979();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sin/b78c91.wgsl.expected.msl b/test/tint/builtins/gen/sin/b78c91.wgsl.expected.msl
index b54d4fb8dd..7acd0e6308 100644
--- a/test/tint/builtins/gen/sin/b78c91.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sin/b78c91.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sin_b78c91();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sin/fc8bc4.wgsl.expected.msl b/test/tint/builtins/gen/sin/fc8bc4.wgsl.expected.msl
index 78417e907b..e0525998d0 100644
--- a/test/tint/builtins/gen/sin/fc8bc4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sin/fc8bc4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sin_fc8bc4() {
-  float2 res = sin(float2());
+  float2 res = sin(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sin_fc8bc4();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sinh/445e33.wgsl.expected.msl b/test/tint/builtins/gen/sinh/445e33.wgsl.expected.msl
index 3361ddda53..1cd540921d 100644
--- a/test/tint/builtins/gen/sinh/445e33.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sinh/445e33.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sinh_445e33() {
-  float4 res = sinh(float4());
+  float4 res = sinh(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sinh_445e33();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sinh/7bb598.wgsl.expected.msl b/test/tint/builtins/gen/sinh/7bb598.wgsl.expected.msl
index 52830a8c4d..208c381869 100644
--- a/test/tint/builtins/gen/sinh/7bb598.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sinh/7bb598.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sinh_7bb598();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sinh/b9860e.wgsl.expected.msl b/test/tint/builtins/gen/sinh/b9860e.wgsl.expected.msl
index ca6289a0e9..f1e812ccf2 100644
--- a/test/tint/builtins/gen/sinh/b9860e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sinh/b9860e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sinh_b9860e() {
-  float2 res = sinh(float2());
+  float2 res = sinh(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sinh_b9860e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sinh/c9a5eb.wgsl.expected.msl b/test/tint/builtins/gen/sinh/c9a5eb.wgsl.expected.msl
index c9d2bb5b81..6af7a0d7de 100644
--- a/test/tint/builtins/gen/sinh/c9a5eb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sinh/c9a5eb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sinh_c9a5eb() {
-  float3 res = sinh(float3());
+  float3 res = sinh(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sinh_c9a5eb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/392c19.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/392c19.wgsl.expected.msl
index 0c556987ff..1b534a6f59 100644
--- a/test/tint/builtins/gen/smoothstep/392c19.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/392c19.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void smoothstep_392c19() {
-  float2 res = smoothstep(float2(), float2(), float2());
+  float2 res = smoothstep(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothstep_392c19();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/40864c.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/40864c.wgsl.expected.msl
index 55fb975bdc..efadf29097 100644
--- a/test/tint/builtins/gen/smoothstep/40864c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/40864c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void smoothstep_40864c() {
-  float4 res = smoothstep(float4(), float4(), float4());
+  float4 res = smoothstep(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothstep_40864c();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/5f615b.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/5f615b.wgsl.expected.msl
index 27f5ab6cda..3ba77c1d02 100644
--- a/test/tint/builtins/gen/smoothstep/5f615b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/5f615b.wgsl.expected.msl
@@ -6,7 +6,7 @@ builtins/gen/smoothstep/5f615b.wgsl:28:24 warning: use of deprecated builtin
 
 using namespace metal;
 void smoothStep_5f615b() {
-  float4 res = smoothstep(float4(), float4(), float4());
+  float4 res = smoothstep(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -15,7 +15,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothStep_5f615b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/658be3.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/658be3.wgsl.expected.msl
index 4d8342eaae..0cbf36bc0f 100644
--- a/test/tint/builtins/gen/smoothstep/658be3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/658be3.wgsl.expected.msl
@@ -6,7 +6,7 @@ builtins/gen/smoothstep/658be3.wgsl:28:24 warning: use of deprecated builtin
 
 using namespace metal;
 void smoothStep_658be3() {
-  float3 res = smoothstep(float3(), float3(), float3());
+  float3 res = smoothstep(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -15,7 +15,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothStep_658be3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/6c4975.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/6c4975.wgsl.expected.msl
index 5fbf3436cf..f265e143e7 100644
--- a/test/tint/builtins/gen/smoothstep/6c4975.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/6c4975.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothstep_6c4975();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/aad1db.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/aad1db.wgsl.expected.msl
index 19ef68fcd6..0f364ab4a2 100644
--- a/test/tint/builtins/gen/smoothstep/aad1db.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/aad1db.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void smoothstep_aad1db() {
-  float3 res = smoothstep(float3(), float3(), float3());
+  float3 res = smoothstep(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothstep_aad1db();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/c11eef.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/c11eef.wgsl.expected.msl
index 1ba59040ac..ed1317d002 100644
--- a/test/tint/builtins/gen/smoothstep/c11eef.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/c11eef.wgsl.expected.msl
@@ -6,7 +6,7 @@ builtins/gen/smoothstep/c11eef.wgsl:28:24 warning: use of deprecated builtin
 
 using namespace metal;
 void smoothStep_c11eef() {
-  float2 res = smoothstep(float2(), float2(), float2());
+  float2 res = smoothstep(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -15,7 +15,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothStep_c11eef();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/smoothstep/cb0bfb.wgsl.expected.msl b/test/tint/builtins/gen/smoothstep/cb0bfb.wgsl.expected.msl
index 34e5b3aecf..4f835bc778 100644
--- a/test/tint/builtins/gen/smoothstep/cb0bfb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/smoothstep/cb0bfb.wgsl.expected.msl
@@ -15,7 +15,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   smoothStep_cb0bfb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sqrt/20c74e.wgsl.expected.msl b/test/tint/builtins/gen/sqrt/20c74e.wgsl.expected.msl
index 3a8c9e7c6a..7f933af5e3 100644
--- a/test/tint/builtins/gen/sqrt/20c74e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sqrt/20c74e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sqrt_20c74e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sqrt/8c7024.wgsl.expected.msl b/test/tint/builtins/gen/sqrt/8c7024.wgsl.expected.msl
index ae85d89233..f1f40b8580 100644
--- a/test/tint/builtins/gen/sqrt/8c7024.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sqrt/8c7024.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sqrt_8c7024() {
-  float2 res = sqrt(float2());
+  float2 res = sqrt(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sqrt_8c7024();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sqrt/aa0d7a.wgsl.expected.msl b/test/tint/builtins/gen/sqrt/aa0d7a.wgsl.expected.msl
index 08b1222327..2d45b3aae2 100644
--- a/test/tint/builtins/gen/sqrt/aa0d7a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sqrt/aa0d7a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sqrt_aa0d7a() {
-  float4 res = sqrt(float4());
+  float4 res = sqrt(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sqrt_aa0d7a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/sqrt/f8c59a.wgsl.expected.msl b/test/tint/builtins/gen/sqrt/f8c59a.wgsl.expected.msl
index d93e68d0e7..d3bc22470c 100644
--- a/test/tint/builtins/gen/sqrt/f8c59a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/sqrt/f8c59a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void sqrt_f8c59a() {
-  float3 res = sqrt(float3());
+  float3 res = sqrt(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   sqrt_f8c59a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/step/0b073b.wgsl.expected.msl b/test/tint/builtins/gen/step/0b073b.wgsl.expected.msl
index 60774de513..7ab4a8ef56 100644
--- a/test/tint/builtins/gen/step/0b073b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/step/0b073b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   step_0b073b();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/step/19accd.wgsl.expected.msl b/test/tint/builtins/gen/step/19accd.wgsl.expected.msl
index 44dd9ebe5c..b01b13459a 100644
--- a/test/tint/builtins/gen/step/19accd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/step/19accd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void step_19accd() {
-  float2 res = step(float2(), float2());
+  float2 res = step(float2(0.0f), float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   step_19accd();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/step/334303.wgsl.expected.msl b/test/tint/builtins/gen/step/334303.wgsl.expected.msl
index 2df2377cf0..5d3f1a34d9 100644
--- a/test/tint/builtins/gen/step/334303.wgsl.expected.msl
+++ b/test/tint/builtins/gen/step/334303.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void step_334303() {
-  float3 res = step(float3(), float3());
+  float3 res = step(float3(0.0f), float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   step_334303();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/step/e2b337.wgsl.expected.msl b/test/tint/builtins/gen/step/e2b337.wgsl.expected.msl
index 7babb88532..9b2aff5a6a 100644
--- a/test/tint/builtins/gen/step/e2b337.wgsl.expected.msl
+++ b/test/tint/builtins/gen/step/e2b337.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void step_e2b337() {
-  float4 res = step(float4(), float4());
+  float4 res = step(float4(0.0f), float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   step_e2b337();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tan/244e2a.wgsl.expected.msl b/test/tint/builtins/gen/tan/244e2a.wgsl.expected.msl
index 64ec9bcf1f..3c3ea57b94 100644
--- a/test/tint/builtins/gen/tan/244e2a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tan/244e2a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tan_244e2a() {
-  float4 res = tan(float4());
+  float4 res = tan(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tan_244e2a();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tan/2f030e.wgsl.expected.msl b/test/tint/builtins/gen/tan/2f030e.wgsl.expected.msl
index 63bec4593f..71d071f975 100644
--- a/test/tint/builtins/gen/tan/2f030e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tan/2f030e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tan_2f030e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tan/7ea104.wgsl.expected.msl b/test/tint/builtins/gen/tan/7ea104.wgsl.expected.msl
index 3be2db34ac..ab23bca36a 100644
--- a/test/tint/builtins/gen/tan/7ea104.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tan/7ea104.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tan_7ea104() {
-  float3 res = tan(float3());
+  float3 res = tan(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tan_7ea104();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tan/8ce3e9.wgsl.expected.msl b/test/tint/builtins/gen/tan/8ce3e9.wgsl.expected.msl
index 92e515caa9..e95598e606 100644
--- a/test/tint/builtins/gen/tan/8ce3e9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tan/8ce3e9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tan_8ce3e9() {
-  float2 res = tan(float2());
+  float2 res = tan(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tan_8ce3e9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tanh/5663c5.wgsl.expected.msl b/test/tint/builtins/gen/tanh/5663c5.wgsl.expected.msl
index 4272f820a6..706f5bb7a6 100644
--- a/test/tint/builtins/gen/tanh/5663c5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tanh/5663c5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tanh_5663c5() {
-  float4 res = tanh(float4());
+  float4 res = tanh(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tanh_5663c5();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tanh/5724b3.wgsl.expected.msl b/test/tint/builtins/gen/tanh/5724b3.wgsl.expected.msl
index bee133bf8f..5af0a259b2 100644
--- a/test/tint/builtins/gen/tanh/5724b3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tanh/5724b3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tanh_5724b3() {
-  float2 res = tanh(float2());
+  float2 res = tanh(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tanh_5724b3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tanh/9f9fb9.wgsl.expected.msl b/test/tint/builtins/gen/tanh/9f9fb9.wgsl.expected.msl
index 47a61a0adf..cbae56d8d1 100644
--- a/test/tint/builtins/gen/tanh/9f9fb9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tanh/9f9fb9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void tanh_9f9fb9() {
-  float3 res = tanh(float3());
+  float3 res = tanh(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tanh_9f9fb9();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/tanh/c15fdb.wgsl.expected.msl b/test/tint/builtins/gen/tanh/c15fdb.wgsl.expected.msl
index b9400e8ea4..c71c1f6bb6 100644
--- a/test/tint/builtins/gen/tanh/c15fdb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/tanh/c15fdb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   tanh_c15fdb();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/textureDimensions/002b2a.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/002b2a.wgsl.expected.msl
index 7e980a0945..b5b212146d 100644
--- a/test/tint/builtins/gen/textureDimensions/002b2a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/002b2a.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::sample> tint_symbol_2) {
   textureDimensions_002b2a(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/012b82.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/012b82.wgsl.expected.msl
index 2eedc2fca9..f53807b875 100644
--- a/test/tint/builtins/gen/textureDimensions/012b82.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/012b82.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureDimensions_012b82(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/08753d.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/08753d.wgsl.expected.msl
index b17a320d5b..a1fa2f3981 100644
--- a/test/tint/builtins/gen/textureDimensions/08753d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/08753d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureDimensions_08753d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0c4772.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0c4772.wgsl.expected.msl
index f44d72ecc6..cc675e6c22 100644
--- a/test/tint/builtins/gen/textureDimensions/0c4772.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0c4772.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_0c4772(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0cce40.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0cce40.wgsl.expected.msl
index c2d4cceed6..e95504846d 100644
--- a/test/tint/builtins/gen/textureDimensions/0cce40.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0cce40.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureDimensions_0cce40(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0cf2ff.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0cf2ff.wgsl.expected.msl
index f1bd381b91..875a38898b 100644
--- a/test/tint/builtins/gen/textureDimensions/0cf2ff.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0cf2ff.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureDimensions_0cf2ff(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0d8b7e.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0d8b7e.wgsl.expected.msl
index 3470bd7e14..d07d72a409 100644
--- a/test/tint/builtins/gen/textureDimensions/0d8b7e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0d8b7e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureDimensions_0d8b7e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0e32ee.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0e32ee.wgsl.expected.msl
index 1b58235cbf..376e7b1473 100644
--- a/test/tint/builtins/gen/textureDimensions/0e32ee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0e32ee.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureDimensions_0e32ee(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/0f3c50.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/0f3c50.wgsl.expected.msl
index 86e7f0d8a6..9e6f6ab279 100644
--- a/test/tint/builtins/gen/textureDimensions/0f3c50.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/0f3c50.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_2) {
   textureDimensions_0f3c50(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/1191a5.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/1191a5.wgsl.expected.msl
index 931111f502..c08c723d33 100644
--- a/test/tint/builtins/gen/textureDimensions/1191a5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/1191a5.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_2) {
   textureDimensions_1191a5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/12c9bb.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/12c9bb.wgsl.expected.msl
index d70293b962..83f261505e 100644
--- a/test/tint/builtins/gen/textureDimensions/12c9bb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/12c9bb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_2) {
   textureDimensions_12c9bb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/147998.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/147998.wgsl.expected.msl
index 442985e860..25431038ea 100644
--- a/test/tint/builtins/gen/textureDimensions/147998.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/147998.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_147998(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/16036c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/16036c.wgsl.expected.msl
index f8656f6dd6..4872c899f6 100644
--- a/test/tint/builtins/gen/textureDimensions/16036c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/16036c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureDimensions_16036c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/1b71f0.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/1b71f0.wgsl.expected.msl
index 54e8e1256d..9ef7f55bb6 100644
--- a/test/tint/builtins/gen/textureDimensions/1b71f0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/1b71f0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureDimensions_1b71f0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/1d6c26.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/1d6c26.wgsl.expected.msl
index ba2b6292db..65d506dd62 100644
--- a/test/tint/builtins/gen/textureDimensions/1d6c26.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/1d6c26.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_1d6c26(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/1e9e39.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/1e9e39.wgsl.expected.msl
index c6219c278b..352d58df65 100644
--- a/test/tint/builtins/gen/textureDimensions/1e9e39.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/1e9e39.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_1e9e39(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/1f20c5.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/1f20c5.wgsl.expected.msl
index 8d7cbc489b..d35a456705 100644
--- a/test/tint/builtins/gen/textureDimensions/1f20c5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/1f20c5.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_2) {
   textureDimensions_1f20c5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/214dd4.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/214dd4.wgsl.expected.msl
index dcda00a789..169ee329ac 100644
--- a/test/tint/builtins/gen/textureDimensions/214dd4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/214dd4.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureDimensions_214dd4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/221f22.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/221f22.wgsl.expected.msl
index b482e8d65c..d20f6575b7 100644
--- a/test/tint/builtins/gen/textureDimensions/221f22.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/221f22.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<int, access::sample> tint_symbol_2) {
   textureDimensions_221f22(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/267788.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/267788.wgsl.expected.msl
index 3590ad73a2..09590894e4 100644
--- a/test/tint/builtins/gen/textureDimensions/267788.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/267788.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_2) {
   textureDimensions_267788(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/26bdfa.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/26bdfa.wgsl.expected.msl
index 862a81e715..0827592b25 100644
--- a/test/tint/builtins/gen/textureDimensions/26bdfa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/26bdfa.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_2) {
   textureDimensions_26bdfa(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/26ef6c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/26ef6c.wgsl.expected.msl
index 14cfc8ca13..ba9013a8ad 100644
--- a/test/tint/builtins/gen/textureDimensions/26ef6c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/26ef6c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureDimensions_26ef6c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/2ad087.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/2ad087.wgsl.expected.msl
index 848bc3b8d8..011b3cb465 100644
--- a/test/tint/builtins/gen/textureDimensions/2ad087.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/2ad087.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureDimensions_2ad087(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/2efa05.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/2efa05.wgsl.expected.msl
index 85bf657323..4f373e5006 100644
--- a/test/tint/builtins/gen/textureDimensions/2efa05.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/2efa05.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::sample> tint_symbol_2) {
   textureDimensions_2efa05(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/2f289f.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/2f289f.wgsl.expected.msl
index cd44b36b9f..a61bafeb5d 100644
--- a/test/tint/builtins/gen/textureDimensions/2f289f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/2f289f.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureDimensions_2f289f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/2fe1cc.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/2fe1cc.wgsl.expected.msl
index 28214cb859..2dc5042f58 100644
--- a/test/tint/builtins/gen/textureDimensions/2fe1cc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/2fe1cc.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_2) {
   textureDimensions_2fe1cc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/318ecc.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/318ecc.wgsl.expected.msl
index d98992ed86..a9655f52bf 100644
--- a/test/tint/builtins/gen/textureDimensions/318ecc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/318ecc.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureDimensions_318ecc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/340d06.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/340d06.wgsl.expected.msl
index bb2348a3ef..eb04eb88e7 100644
--- a/test/tint/builtins/gen/textureDimensions/340d06.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/340d06.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureDimensions_340d06(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/398e30.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/398e30.wgsl.expected.msl
index a2bff50d18..8de5617137 100644
--- a/test/tint/builtins/gen/textureDimensions/398e30.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/398e30.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureDimensions_398e30(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/3a94ea.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/3a94ea.wgsl.expected.msl
index 512103551a..7dd2f6b70b 100644
--- a/test/tint/builtins/gen/textureDimensions/3a94ea.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/3a94ea.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureDimensions_3a94ea(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/3aca08.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/3aca08.wgsl.expected.msl
index f5e4b1b481..765771f8f8 100644
--- a/test/tint/builtins/gen/textureDimensions/3aca08.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/3aca08.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_3aca08(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/3c5ad8.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/3c5ad8.wgsl.expected.msl
index 1366cdf52d..ba7e47a6a7 100644
--- a/test/tint/builtins/gen/textureDimensions/3c5ad8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/3c5ad8.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureDimensions_3c5ad8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/4152a6.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/4152a6.wgsl.expected.msl
index afa8c0f219..ac8d43dac9 100644
--- a/test/tint/builtins/gen/textureDimensions/4152a6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/4152a6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<uint, access::sample> tint_symbol_2) {
   textureDimensions_4152a6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/423f99.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/423f99.wgsl.expected.msl
index f6d8c32bd1..77b610faab 100644
--- a/test/tint/builtins/gen/textureDimensions/423f99.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/423f99.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::sample> tint_symbol_2) {
   textureDimensions_423f99(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/4267ee.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/4267ee.wgsl.expected.msl
index e6579cdc3c..177015d0ad 100644
--- a/test/tint/builtins/gen/textureDimensions/4267ee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/4267ee.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_4267ee(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/42d4e6.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/42d4e6.wgsl.expected.msl
index 5d05c3e452..cc3fa542ff 100644
--- a/test/tint/builtins/gen/textureDimensions/42d4e6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/42d4e6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_42d4e6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/48cb89.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/48cb89.wgsl.expected.msl
index 14a1875b39..5f475e25fe 100644
--- a/test/tint/builtins/gen/textureDimensions/48cb89.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/48cb89.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_48cb89(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/49d274.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/49d274.wgsl.expected.msl
index 69112a1d96..4ca4453d84 100644
--- a/test/tint/builtins/gen/textureDimensions/49d274.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/49d274.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureDimensions_49d274(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/4df9a8.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/4df9a8.wgsl.expected.msl
index 36c25c4b56..54723cb4de 100644
--- a/test/tint/builtins/gen/textureDimensions/4df9a8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/4df9a8.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureDimensions_4df9a8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/50a9ee.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/50a9ee.wgsl.expected.msl
index 0924964a8b..45035cca3c 100644
--- a/test/tint/builtins/gen/textureDimensions/50a9ee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/50a9ee.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_2) {
   textureDimensions_50a9ee(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/52045c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/52045c.wgsl.expected.msl
index 81fc60c5cd..ec08120b76 100644
--- a/test/tint/builtins/gen/textureDimensions/52045c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/52045c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::sample> tint_symbol_2) {
   textureDimensions_52045c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/55b23e.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/55b23e.wgsl.expected.msl
index 40ee9ecf0e..0778752ea7 100644
--- a/test/tint/builtins/gen/textureDimensions/55b23e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/55b23e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_55b23e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/579629.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/579629.wgsl.expected.msl
index f1af5282ce..d6c497bc4b 100644
--- a/test/tint/builtins/gen/textureDimensions/579629.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/579629.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<uint, access::read> tint_symbol_2) {
   textureDimensions_579629(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<uint, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/57da0b.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/57da0b.wgsl.expected.msl
index c71837ffb9..fb1c232486 100644
--- a/test/tint/builtins/gen/textureDimensions/57da0b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/57da0b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureDimensions_57da0b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/57e28f.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/57e28f.wgsl.expected.msl
index fb1f889a99..c089020df3 100644
--- a/test/tint/builtins/gen/textureDimensions/57e28f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/57e28f.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_2) {
   textureDimensions_57e28f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/58a515.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/58a515.wgsl.expected.msl
index 2cc6f1a315..c8d90cdade 100644
--- a/test/tint/builtins/gen/textureDimensions/58a515.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/58a515.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_58a515(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/5985f3.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/5985f3.wgsl.expected.msl
index 9d911c8671..90f407d362 100644
--- a/test/tint/builtins/gen/textureDimensions/5985f3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/5985f3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureDimensions_5985f3(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/5caa5e.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/5caa5e.wgsl.expected.msl
index a23d4ab6e2..56e5f71c22 100644
--- a/test/tint/builtins/gen/textureDimensions/5caa5e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/5caa5e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureDimensions_5caa5e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/5e295d.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/5e295d.wgsl.expected.msl
index 4da0c3b6db..50d3988eba 100644
--- a/test/tint/builtins/gen/textureDimensions/5e295d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/5e295d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureDimensions_5e295d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/60bf54.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/60bf54.wgsl.expected.msl
index 1f35ec2649..bf597c3afd 100644
--- a/test/tint/builtins/gen/textureDimensions/60bf54.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/60bf54.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureDimensions_60bf54(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/63f3cf.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/63f3cf.wgsl.expected.msl
index 44388bc227..931b457149 100644
--- a/test/tint/builtins/gen/textureDimensions/63f3cf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/63f3cf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_63f3cf(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/68105c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/68105c.wgsl.expected.msl
index ebafaa5dde..a1fdb63b94 100644
--- a/test/tint/builtins/gen/textureDimensions/68105c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/68105c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureDimensions_68105c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/686ef2.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/686ef2.wgsl.expected.msl
index 6facf32607..4c5bb66d0b 100644
--- a/test/tint/builtins/gen/textureDimensions/686ef2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/686ef2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<int, access::sample> tint_symbol_2) {
   textureDimensions_686ef2(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/6adac6.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/6adac6.wgsl.expected.msl
index de1f67b2e8..7087625943 100644
--- a/test/tint/builtins/gen/textureDimensions/6adac6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/6adac6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureDimensions_6adac6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/6ec1b4.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/6ec1b4.wgsl.expected.msl
index 379a6398fa..52a3369bb2 100644
--- a/test/tint/builtins/gen/textureDimensions/6ec1b4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/6ec1b4.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::sample> tint_symbol_2) {
   textureDimensions_6ec1b4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/6f0d79.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/6f0d79.wgsl.expected.msl
index 0de9feabf4..5154f6cfbf 100644
--- a/test/tint/builtins/gen/textureDimensions/6f0d79.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/6f0d79.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_6f0d79(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/702c53.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/702c53.wgsl.expected.msl
index 3dc0263bc3..d202631130 100644
--- a/test/tint/builtins/gen/textureDimensions/702c53.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/702c53.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_702c53(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/72e5d6.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/72e5d6.wgsl.expected.msl
index 5e835e305c..50c3c1628d 100644
--- a/test/tint/builtins/gen/textureDimensions/72e5d6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/72e5d6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_2) {
   textureDimensions_72e5d6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/79df87.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/79df87.wgsl.expected.msl
index 01adb4d3dc..92eebe2753 100644
--- a/test/tint/builtins/gen/textureDimensions/79df87.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/79df87.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::sample> tint_symbol_2) {
   textureDimensions_79df87(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/7bf826.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/7bf826.wgsl.expected.msl
index 4964ca048b..59cd3739f0 100644
--- a/test/tint/builtins/gen/textureDimensions/7bf826.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/7bf826.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_2) {
   textureDimensions_7bf826(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/7f5c2e.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/7f5c2e.wgsl.expected.msl
index 6cae60437a..f853ebcebf 100644
--- a/test/tint/builtins/gen/textureDimensions/7f5c2e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/7f5c2e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureDimensions_7f5c2e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/8028f3.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/8028f3.wgsl.expected.msl
index 50d4cee541..efc7793dda 100644
--- a/test/tint/builtins/gen/textureDimensions/8028f3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/8028f3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_8028f3(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/811679.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/811679.wgsl.expected.msl
index 98b2a954cc..825c3ade50 100644
--- a/test/tint/builtins/gen/textureDimensions/811679.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/811679.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureDimensions_811679(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/820596.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/820596.wgsl.expected.msl
index 303771c5c9..1ecf8c985c 100644
--- a/test/tint/builtins/gen/textureDimensions/820596.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/820596.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureDimensions_820596(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/83ee5a.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/83ee5a.wgsl.expected.msl
index f92d24aacd..29cff8f6c4 100644
--- a/test/tint/builtins/gen/textureDimensions/83ee5a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/83ee5a.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureDimensions_83ee5a(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/85d556.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/85d556.wgsl.expected.msl
index 05c997d474..2b9b1911c3 100644
--- a/test/tint/builtins/gen/textureDimensions/85d556.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/85d556.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_2) {
   textureDimensions_85d556(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/88ad17.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/88ad17.wgsl.expected.msl
index cbd3f88db3..f46a99d8dd 100644
--- a/test/tint/builtins/gen/textureDimensions/88ad17.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/88ad17.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<uint, access::sample> tint_symbol_2) {
   textureDimensions_88ad17(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/8aa4c4.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/8aa4c4.wgsl.expected.msl
index 4272060876..77f5715a6d 100644
--- a/test/tint/builtins/gen/textureDimensions/8aa4c4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/8aa4c4.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_2) {
   textureDimensions_8aa4c4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/8deb5e.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/8deb5e.wgsl.expected.msl
index 1b165dfe81..7899845cb3 100644
--- a/test/tint/builtins/gen/textureDimensions/8deb5e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/8deb5e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::sample> tint_symbol_2) {
   textureDimensions_8deb5e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/8f20bf.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/8f20bf.wgsl.expected.msl
index fe8a216299..431a4549c4 100644
--- a/test/tint/builtins/gen/textureDimensions/8f20bf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/8f20bf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_2) {
   textureDimensions_8f20bf(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/8fca0f.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/8fca0f.wgsl.expected.msl
index b80ae46bc8..f104902483 100644
--- a/test/tint/builtins/gen/textureDimensions/8fca0f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/8fca0f.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_8fca0f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/90340b.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/90340b.wgsl.expected.msl
index 0fa625c602..f585531ed1 100644
--- a/test/tint/builtins/gen/textureDimensions/90340b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/90340b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_2) {
   textureDimensions_90340b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9042ab.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9042ab.wgsl.expected.msl
index 1e47848252..5f29287b31 100644
--- a/test/tint/builtins/gen/textureDimensions/9042ab.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9042ab.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureDimensions_9042ab(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9393b0.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9393b0.wgsl.expected.msl
index 9f2122c712..0670fb3ae9 100644
--- a/test/tint/builtins/gen/textureDimensions/9393b0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9393b0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_2) {
   textureDimensions_9393b0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/939fdb.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/939fdb.wgsl.expected.msl
index e825ea3231..a6283fbd15 100644
--- a/test/tint/builtins/gen/textureDimensions/939fdb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/939fdb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_2) {
   textureDimensions_939fdb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/962dcd.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/962dcd.wgsl.expected.msl
index 8f66f9d7e8..052154fa52 100644
--- a/test/tint/builtins/gen/textureDimensions/962dcd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/962dcd.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<int, access::sample> tint_symbol_2) {
   textureDimensions_962dcd(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9abfe5.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9abfe5.wgsl.expected.msl
index 4b2bcddf04..cc19962ad6 100644
--- a/test/tint/builtins/gen/textureDimensions/9abfe5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9abfe5.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_9abfe5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9c9c57.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9c9c57.wgsl.expected.msl
index e457997bfd..cbffa18cfd 100644
--- a/test/tint/builtins/gen/textureDimensions/9c9c57.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9c9c57.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_2) {
   textureDimensions_9c9c57(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9da9e2.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9da9e2.wgsl.expected.msl
index 98178fc971..ea085fa528 100644
--- a/test/tint/builtins/gen/textureDimensions/9da9e2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9da9e2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureDimensions_9da9e2(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9eb8d8.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9eb8d8.wgsl.expected.msl
index 8d1ec05550..140c2af898 100644
--- a/test/tint/builtins/gen/textureDimensions/9eb8d8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9eb8d8.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureDimensions_9eb8d8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/9f8e46.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/9f8e46.wgsl.expected.msl
index 23edfc2885..b7097a21b4 100644
--- a/test/tint/builtins/gen/textureDimensions/9f8e46.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/9f8e46.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_2) {
   textureDimensions_9f8e46(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/a01845.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/a01845.wgsl.expected.msl
index 02fc57141d..ceb6e124aa 100644
--- a/test/tint/builtins/gen/textureDimensions/a01845.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/a01845.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_2) {
   textureDimensions_a01845(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/a7d565.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/a7d565.wgsl.expected.msl
index 22d4338ad1..aef867087f 100644
--- a/test/tint/builtins/gen/textureDimensions/a7d565.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/a7d565.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::sample> tint_symbol_2) {
   textureDimensions_a7d565(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/a863f2.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/a863f2.wgsl.expected.msl
index 3bbebf328a..583342b5f9 100644
--- a/test/tint/builtins/gen/textureDimensions/a863f2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/a863f2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_a863f2(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/a9c9c1.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/a9c9c1.wgsl.expected.msl
index 539d007136..7cfab5e280 100644
--- a/test/tint/builtins/gen/textureDimensions/a9c9c1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/a9c9c1.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_2) {
   textureDimensions_a9c9c1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/b0e16d.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/b0e16d.wgsl.expected.msl
index ee971ff9ae..60c470e875 100644
--- a/test/tint/builtins/gen/textureDimensions/b0e16d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/b0e16d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_2) {
   textureDimensions_b0e16d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/b3c954.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/b3c954.wgsl.expected.msl
index a7daabd25d..33fc09aae0 100644
--- a/test/tint/builtins/gen/textureDimensions/b3c954.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/b3c954.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<uint, access::sample> tint_symbol_2) {
   textureDimensions_b3c954(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/b3e407.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/b3e407.wgsl.expected.msl
index 6b96a63469..86bd509d77 100644
--- a/test/tint/builtins/gen/textureDimensions/b3e407.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/b3e407.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::sample> tint_symbol_2) {
   textureDimensions_b3e407(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/b91240.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/b91240.wgsl.expected.msl
index 84375cac62..ee84ff1eb9 100644
--- a/test/tint/builtins/gen/textureDimensions/b91240.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/b91240.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_b91240(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/ba1481.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/ba1481.wgsl.expected.msl
index 1d4eb711ca..cf84f15c94 100644
--- a/test/tint/builtins/gen/textureDimensions/ba1481.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/ba1481.wgsl.expected.msl
@@ -30,7 +30,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_2) {
   textureDimensions_ba1481(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/bb3dde.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/bb3dde.wgsl.expected.msl
index 89c1d8458c..0f837421b7 100644
--- a/test/tint/builtins/gen/textureDimensions/bb3dde.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/bb3dde.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureDimensions_bb3dde(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/c30e75.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/c30e75.wgsl.expected.msl
index 815d44cdbb..711f4aace3 100644
--- a/test/tint/builtins/gen/textureDimensions/c30e75.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/c30e75.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureDimensions_c30e75(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/c7943d.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/c7943d.wgsl.expected.msl
index ff4d805db4..39c32d13d5 100644
--- a/test/tint/builtins/gen/textureDimensions/c7943d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/c7943d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureDimensions_c7943d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cc968c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cc968c.wgsl.expected.msl
index 93357b83d6..2a4db09c42 100644
--- a/test/tint/builtins/gen/textureDimensions/cc968c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cc968c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureDimensions_cc968c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cccc8f.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cccc8f.wgsl.expected.msl
index 7e988b4262..f03ce0c682 100644
--- a/test/tint/builtins/gen/textureDimensions/cccc8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cccc8f.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureDimensions_cccc8f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cd76a7.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cd76a7.wgsl.expected.msl
index 5013514518..14b141addd 100644
--- a/test/tint/builtins/gen/textureDimensions/cd76a7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cd76a7.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_cd76a7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cdf473.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cdf473.wgsl.expected.msl
index 8cd521d7fd..fa50285dcc 100644
--- a/test/tint/builtins/gen/textureDimensions/cdf473.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cdf473.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureDimensions_cdf473(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cec841.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cec841.wgsl.expected.msl
index 689a796e25..7c0b4ee3e5 100644
--- a/test/tint/builtins/gen/textureDimensions/cec841.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cec841.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_2) {
   textureDimensions_cec841(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/cf7e43.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/cf7e43.wgsl.expected.msl
index d9b49986bc..210364294b 100644
--- a/test/tint/builtins/gen/textureDimensions/cf7e43.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/cf7e43.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureDimensions_cf7e43(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/d125bc.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/d125bc.wgsl.expected.msl
index d36c63f9b0..67f0abcb41 100644
--- a/test/tint/builtins/gen/textureDimensions/d125bc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/d125bc.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_2) {
   textureDimensions_d125bc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/d83c45.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/d83c45.wgsl.expected.msl
index c33e6dfcfe..663d3c6385 100644
--- a/test/tint/builtins/gen/textureDimensions/d83c45.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/d83c45.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<uint, access::sample> tint_symbol_2) {
   textureDimensions_d83c45(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/daf7c0.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/daf7c0.wgsl.expected.msl
index 086ae36ae5..9f811af45e 100644
--- a/test/tint/builtins/gen/textureDimensions/daf7c0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/daf7c0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<int, access::read> tint_symbol_2) {
   textureDimensions_daf7c0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<int, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/dc2dd0.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/dc2dd0.wgsl.expected.msl
index be8620cb32..9e5082a93f 100644
--- a/test/tint/builtins/gen/textureDimensions/dc2dd0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/dc2dd0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureDimensions_dc2dd0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/e927be.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/e927be.wgsl.expected.msl
index 40d1010494..709257fa98 100644
--- a/test/tint/builtins/gen/textureDimensions/e927be.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/e927be.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<int, access::sample> tint_symbol_2) {
   textureDimensions_e927be(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/e9e96c.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/e9e96c.wgsl.expected.msl
index 71d8e46118..d512809aa0 100644
--- a/test/tint/builtins/gen/textureDimensions/e9e96c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/e9e96c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_e9e96c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/ef5b89.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/ef5b89.wgsl.expected.msl
index c6c771a4c9..a0d18a7526 100644
--- a/test/tint/builtins/gen/textureDimensions/ef5b89.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/ef5b89.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<float, access::read> tint_symbol_2) {
   textureDimensions_ef5b89(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/efc8a4.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/efc8a4.wgsl.expected.msl
index 5f79ff38a9..f1908ffb5c 100644
--- a/test/tint/builtins/gen/textureDimensions/efc8a4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/efc8a4.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::sample> tint_symbol_2) {
   textureDimensions_efc8a4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/f60bdb.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/f60bdb.wgsl.expected.msl
index 13b604c42c..1ec0626ad9 100644
--- a/test/tint/builtins/gen/textureDimensions/f60bdb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/f60bdb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_2) {
   textureDimensions_f60bdb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/f7145b.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/f7145b.wgsl.expected.msl
index 6dbf9e9c75..ca07490508 100644
--- a/test/tint/builtins/gen/textureDimensions/f7145b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/f7145b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_2) {
   textureDimensions_f7145b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/f931c7.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/f931c7.wgsl.expected.msl
index 8167596ae9..7b39e0fb9e 100644
--- a/test/tint/builtins/gen/textureDimensions/f931c7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/f931c7.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureDimensions_f931c7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/fa9859.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/fa9859.wgsl.expected.msl
index 193d7d995a..5fca056387 100644
--- a/test/tint/builtins/gen/textureDimensions/fa9859.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/fa9859.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_2) {
   textureDimensions_fa9859(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/fb5670.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/fb5670.wgsl.expected.msl
index bf7f8df262..fed740f414 100644
--- a/test/tint/builtins/gen/textureDimensions/fb5670.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/fb5670.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureDimensions_fb5670(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureDimensions/fcac78.wgsl.expected.msl b/test/tint/builtins/gen/textureDimensions/fcac78.wgsl.expected.msl
index 6049ea8763..3c6340c1e9 100644
--- a/test/tint/builtins/gen/textureDimensions/fcac78.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureDimensions/fcac78.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureDimensions_fcac78(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/01305f.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/01305f.wgsl.expected.msl
index 684d655fdd..1db6ec98e2 100644
--- a/test/tint/builtins/gen/textureGather/01305f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/01305f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_01305f(texture2d_array<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(0), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_01305f(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/06030a.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/06030a.wgsl.expected.msl
index 58cfec266d..e7bf7b84b0 100644
--- a/test/tint/builtins/gen/textureGather/06030a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/06030a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_06030a(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_06030a(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/10c554.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/10c554.wgsl.expected.msl
index 9fe4166823..c3f13c1ea4 100644
--- a/test/tint/builtins/gen/textureGather/10c554.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/10c554.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_10c554(depthcube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float3());
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_10c554(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/15d79c.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/15d79c.wgsl.expected.msl
index 37a9753650..4e43bfaa17 100644
--- a/test/tint/builtins/gen/textureGather/15d79c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/15d79c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_15d79c(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_15d79c(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/2e0ed5.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/2e0ed5.wgsl.expected.msl
index dfe89418b5..9ae7410e33 100644
--- a/test/tint/builtins/gen/textureGather/2e0ed5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/2e0ed5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_2e0ed5(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2());
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_2e0ed5(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/3112e8.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/3112e8.wgsl.expected.msl
index 69f2b13bb5..6ebce318a8 100644
--- a/test/tint/builtins/gen/textureGather/3112e8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/3112e8.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_3112e8(texturecube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(), 1, component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), 1, component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_3112e8(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/3c527e.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/3c527e.wgsl.expected.msl
index c5458cf275..ff4aec3d36 100644
--- a/test/tint/builtins/gen/textureGather/3c527e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/3c527e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_3c527e(texturecube_array<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float3(), 1, component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), 1, component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_3c527e(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/43025d.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/43025d.wgsl.expected.msl
index a2c6d259fe..0867050d11 100644
--- a/test/tint/builtins/gen/textureGather/43025d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/43025d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_43025d(depthcube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(), 1);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_43025d(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/4f2350.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/4f2350.wgsl.expected.msl
index 947743ea44..95a43357d4 100644
--- a/test/tint/builtins/gen/textureGather/4f2350.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/4f2350.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_4f2350(texture2d_array<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_4f2350(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/51cf0b.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/51cf0b.wgsl.expected.msl
index a082138171..4ba9e53605 100644
--- a/test/tint/builtins/gen/textureGather/51cf0b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/51cf0b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_51cf0b(texture2d_array<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(0), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_51cf0b(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/53ece6.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/53ece6.wgsl.expected.msl
index 2a5dbf0e87..0138daa5d8 100644
--- a/test/tint/builtins/gen/textureGather/53ece6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/53ece6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_53ece6(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2());
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_53ece6(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/57bfc6.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/57bfc6.wgsl.expected.msl
index 426ea2006a..bbe676a2e4 100644
--- a/test/tint/builtins/gen/textureGather/57bfc6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/57bfc6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_57bfc6(texturecube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_57bfc6(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/587ba3.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/587ba3.wgsl.expected.msl
index 0ce1455606..a4a66f910d 100644
--- a/test/tint/builtins/gen/textureGather/587ba3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/587ba3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_587ba3(texture2d<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_587ba3(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/69e0fb.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/69e0fb.wgsl.expected.msl
index 43be4dfa0f..9e8ac80817 100644
--- a/test/tint/builtins/gen/textureGather/69e0fb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/69e0fb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_69e0fb(texture2d<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_69e0fb(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/93003d.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/93003d.wgsl.expected.msl
index b7c2ba3547..2f83621424 100644
--- a/test/tint/builtins/gen/textureGather/93003d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/93003d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_93003d(texture2d<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_93003d(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/9a6358.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/9a6358.wgsl.expected.msl
index 8588a79fab..b6f9f6857f 100644
--- a/test/tint/builtins/gen/textureGather/9a6358.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/9a6358.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_9a6358(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_9a6358(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/9efca2.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/9efca2.wgsl.expected.msl
index 4705de2128..a3cde10552 100644
--- a/test/tint/builtins/gen/textureGather/9efca2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/9efca2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_9efca2(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(0), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_9efca2(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/bd0b1e.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/bd0b1e.wgsl.expected.msl
index d8311b3f20..7f576edb1c 100644
--- a/test/tint/builtins/gen/textureGather/bd0b1e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/bd0b1e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_bd0b1e(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_bd0b1e(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/c409ae.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/c409ae.wgsl.expected.msl
index c917900704..d5c9793525 100644
--- a/test/tint/builtins/gen/textureGather/c409ae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/c409ae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_c409ae(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2());
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_c409ae(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/c55822.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/c55822.wgsl.expected.msl
index 9f34359fcb..56981c001d 100644
--- a/test/tint/builtins/gen/textureGather/c55822.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/c55822.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_c55822(texturecube_array<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float3(), 1, component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), 1, component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_c55822(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/e1b67d.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/e1b67d.wgsl.expected.msl
index 8d806f937a..d78d2d328c 100644
--- a/test/tint/builtins/gen/textureGather/e1b67d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/e1b67d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_e1b67d(texturecube<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float3(), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_e1b67d(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/e9eff6.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/e9eff6.wgsl.expected.msl
index 81c960d082..1324b2d235 100644
--- a/test/tint/builtins/gen/textureGather/e9eff6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/e9eff6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_e9eff6(texture2d<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_e9eff6(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/f5f3ba.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/f5f3ba.wgsl.expected.msl
index 674927c5f1..89c7e7d120 100644
--- a/test/tint/builtins/gen/textureGather/f5f3ba.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/f5f3ba.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_f5f3ba(texture2d_array<uint, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), 1, int2(), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), 1, int2(0), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_f5f3ba(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGather/f7995a.wgsl.expected.msl b/test/tint/builtins/gen/textureGather/f7995a.wgsl.expected.msl
index daf9ec7c0e..0dd9987356 100644
--- a/test/tint/builtins/gen/textureGather/f7995a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGather/f7995a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGather_f7995a(texturecube<int, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float3(), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float3(0.0f), component::y);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<int, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGather_f7995a(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<int, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/182fd4.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/182fd4.wgsl.expected.msl
index 87e666155b..5c3e528957 100644
--- a/test/tint/builtins/gen/textureGatherCompare/182fd4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/182fd4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_182fd4(depthcube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float3(), 1.0f);
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float3(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_182fd4(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/60d2d1.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/60d2d1.wgsl.expected.msl
index 3fb5c132bb..b0505731a2 100644
--- a/test/tint/builtins/gen/textureGatherCompare/60d2d1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/60d2d1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_60d2d1(depthcube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float3(), 1, 1.0f);
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float3(0.0f), 1, 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_60d2d1(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/6d9352.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/6d9352.wgsl.expected.msl
index cacdd370f1..a5b7ececb7 100644
--- a/test/tint/builtins/gen/textureGatherCompare/6d9352.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/6d9352.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_6d9352(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(), 1.0f);
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(0.0f), 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_6d9352(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/6f1267.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/6f1267.wgsl.expected.msl
index 1e3a96faec..1332ccb82a 100644
--- a/test/tint/builtins/gen/textureGatherCompare/6f1267.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/6f1267.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_6f1267(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(), 1, 1.0f, int2());
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(0.0f), 1, 1.0f, int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_6f1267(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/783e65.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/783e65.wgsl.expected.msl
index 5520d910be..5c8eb746b9 100644
--- a/test/tint/builtins/gen/textureGatherCompare/783e65.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/783e65.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_783e65(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(), 1, 1.0f);
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(0.0f), 1, 1.0f);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_783e65(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureGatherCompare/a5f587.wgsl.expected.msl b/test/tint/builtins/gen/textureGatherCompare/a5f587.wgsl.expected.msl
index 94edcaded9..2ceef170c2 100644
--- a/test/tint/builtins/gen/textureGatherCompare/a5f587.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureGatherCompare/a5f587.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureGatherCompare_a5f587(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(), 1.0f, int2());
+  float4 res = tint_symbol_1.gather_compare(tint_symbol_2, float2(0.0f), 1.0f, int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureGatherCompare_a5f587(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/19cf87.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/19cf87.wgsl.expected.msl
index c9b2c1d39a..452e06878c 100644
--- a/test/tint/builtins/gen/textureLoad/19cf87.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/19cf87.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_19cf87(depth2d<float, access::sample> tint_symbol_1) {
-  float res = tint_symbol_1.read(uint2(int2()), 0);
+  float res = tint_symbol_1.read(uint2(int2(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_2) {
   textureLoad_19cf87(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/1b8588.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/1b8588.wgsl.expected.msl
index 2dd4d15ac0..a71b52b813 100644
--- a/test/tint/builtins/gen/textureLoad/1b8588.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/1b8588.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::sample> tint_symbol_2) {
   textureLoad_1b8588(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/1f2016.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/1f2016.wgsl.expected.msl
index 296e7bbbc9..194cdbfd53 100644
--- a/test/tint/builtins/gen/textureLoad/1f2016.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/1f2016.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_1f2016(texture3d<float, access::sample> tint_symbol_1) {
-  float4 res = tint_symbol_1.read(uint3(int3()), 0);
+  float4 res = tint_symbol_1.read(uint3(int3(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_2) {
   textureLoad_1f2016(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/484344.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/484344.wgsl.expected.msl
index b1ffb1da8a..bddd029ec5 100644
--- a/test/tint/builtins/gen/textureLoad/484344.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/484344.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_484344(texture2d<float, access::sample> tint_symbol_1) {
-  float4 res = tint_symbol_1.read(uint2(int2()), 0);
+  float4 res = tint_symbol_1.read(uint2(int2(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_2) {
   textureLoad_484344(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/4fd803.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/4fd803.wgsl.expected.msl
index ccfeb6a46b..3a19c301a8 100644
--- a/test/tint/builtins/gen/textureLoad/4fd803.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/4fd803.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_4fd803(texture3d<int, access::sample> tint_symbol_1) {
-  int4 res = tint_symbol_1.read(uint3(int3()), 0);
+  int4 res = tint_symbol_1.read(uint3(int3(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::sample> tint_symbol_2) {
   textureLoad_4fd803(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/5a2f9d.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/5a2f9d.wgsl.expected.msl
index 54f52cfb82..be59bdf8a1 100644
--- a/test/tint/builtins/gen/textureLoad/5a2f9d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/5a2f9d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::sample> tint_symbol_2) {
   textureLoad_5a2f9d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/6154d4.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/6154d4.wgsl.expected.msl
index a542c124a6..91c75ba039 100644
--- a/test/tint/builtins/gen/textureLoad/6154d4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/6154d4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_6154d4(texture2d<uint, access::sample> tint_symbol_1) {
-  uint4 res = tint_symbol_1.read(uint2(int2()), 0);
+  uint4 res = tint_symbol_1.read(uint2(int2(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_2) {
   textureLoad_6154d4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/6273b1.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/6273b1.wgsl.expected.msl
index 8dfd72b2d6..e39caca53d 100644
--- a/test/tint/builtins/gen/textureLoad/6273b1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/6273b1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_6273b1(depth2d_ms<float, access::read> tint_symbol_1) {
-  float res = tint_symbol_1.read(uint2(int2()), 1);
+  float res = tint_symbol_1.read(uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_2) {
   textureLoad_6273b1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/79e697.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/79e697.wgsl.expected.msl
index 4e4cacf963..e47beeabf3 100644
--- a/test/tint/builtins/gen/textureLoad/79e697.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/79e697.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_79e697(texture2d_array<int, access::sample> tint_symbol_1) {
-  int4 res = tint_symbol_1.read(uint2(int2()), 1, 0);
+  int4 res = tint_symbol_1.read(uint2(int2(0)), 1, 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_2) {
   textureLoad_79e697(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/7c90e5.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/7c90e5.wgsl.expected.msl
index a2b782a088..ffdc317fb8 100644
--- a/test/tint/builtins/gen/textureLoad/7c90e5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/7c90e5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_7c90e5(texture2d_array<uint, access::sample> tint_symbol_1) {
-  uint4 res = tint_symbol_1.read(uint2(int2()), 1, 0);
+  uint4 res = tint_symbol_1.read(uint2(int2(0)), 1, 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_2) {
   textureLoad_7c90e5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/81c381.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/81c381.wgsl.expected.msl
index d2fd8d08f0..29a6d1b32d 100644
--- a/test/tint/builtins/gen/textureLoad/81c381.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/81c381.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::sample> tint_symbol_2) {
   textureLoad_81c381(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/87be85.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/87be85.wgsl.expected.msl
index c8337af61e..c78f9e92ea 100644
--- a/test/tint/builtins/gen/textureLoad/87be85.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/87be85.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_87be85(texture2d_array<float, access::sample> tint_symbol_1) {
-  float4 res = tint_symbol_1.read(uint2(int2()), 1, 0);
+  float4 res = tint_symbol_1.read(uint2(int2(0)), 1, 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_2) {
   textureLoad_87be85(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/8acf41.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/8acf41.wgsl.expected.msl
index d7ae7960ef..b52cfa7e3d 100644
--- a/test/tint/builtins/gen/textureLoad/8acf41.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/8acf41.wgsl.expected.msl
@@ -42,7 +42,7 @@ float4 textureLoadExternal(texture2d<float, access::sample> plane0, texture2d<fl
 }
 
 void textureLoad_8acf41(texture2d<float, access::sample> tint_symbol_1, texture2d<float, access::sample> tint_symbol_2, const constant ExternalTextureParams* const tint_symbol_3) {
-  float4 res = textureLoadExternal(tint_symbol_1, tint_symbol_2, int2(), *(tint_symbol_3));
+  float4 res = textureLoadExternal(tint_symbol_1, tint_symbol_2, int2(0), *(tint_symbol_3));
 }
 
 struct tint_symbol {
@@ -51,7 +51,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_4, texture2d<float, access::sample> tint_symbol_5, const constant ExternalTextureParams* const tint_symbol_6) {
   textureLoad_8acf41(tint_symbol_4, tint_symbol_5, tint_symbol_6);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_7 [[texture(0)]], texture2d<float, access::sample> tint_symbol_8 [[texture(1)]], const constant ExternalTextureParams* tint_symbol_9 [[buffer(2)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/9b2667.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/9b2667.wgsl.expected.msl
index 9faf689498..98b0410f6d 100644
--- a/test/tint/builtins/gen/textureLoad/9b2667.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/9b2667.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_9b2667(depth2d_array<float, access::sample> tint_symbol_1) {
-  float res = tint_symbol_1.read(uint2(int2()), 1, 0);
+  float res = tint_symbol_1.read(uint2(int2(0)), 1, 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_2) {
   textureLoad_9b2667(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/a583c9.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/a583c9.wgsl.expected.msl
index 553f45eed8..7bcc2d6b2a 100644
--- a/test/tint/builtins/gen/textureLoad/a583c9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/a583c9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_a583c9(texture2d_ms<float, access::read> tint_symbol_1) {
-  float4 res = tint_symbol_1.read(uint2(int2()), 1);
+  float4 res = tint_symbol_1.read(uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<float, access::read> tint_symbol_2) {
   textureLoad_a583c9(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/a9a9f5.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/a9a9f5.wgsl.expected.msl
index 1d87c99657..8610f77ef7 100644
--- a/test/tint/builtins/gen/textureLoad/a9a9f5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/a9a9f5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_a9a9f5(texture3d<uint, access::sample> tint_symbol_1) {
-  uint4 res = tint_symbol_1.read(uint3(int3()), 0);
+  uint4 res = tint_symbol_1.read(uint3(int3(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::sample> tint_symbol_2) {
   textureLoad_a9a9f5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/c2a480.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/c2a480.wgsl.expected.msl
index 01badd3190..d566ce6e7f 100644
--- a/test/tint/builtins/gen/textureLoad/c2a480.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/c2a480.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_c2a480(texture2d<int, access::sample> tint_symbol_1) {
-  int4 res = tint_symbol_1.read(uint2(int2()), 0);
+  int4 res = tint_symbol_1.read(uint2(int2(0)), 0);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_2) {
   textureLoad_c2a480(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/c378ee.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/c378ee.wgsl.expected.msl
index 60085e0404..efdc2c2b22 100644
--- a/test/tint/builtins/gen/textureLoad/c378ee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/c378ee.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_c378ee(texture2d_ms<uint, access::read> tint_symbol_1) {
-  uint4 res = tint_symbol_1.read(uint2(int2()), 1);
+  uint4 res = tint_symbol_1.read(uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<uint, access::read> tint_symbol_2) {
   textureLoad_c378ee(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<uint, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureLoad/e3d2cc.wgsl.expected.msl b/test/tint/builtins/gen/textureLoad/e3d2cc.wgsl.expected.msl
index 1674c168e3..024057e13d 100644
--- a/test/tint/builtins/gen/textureLoad/e3d2cc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureLoad/e3d2cc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureLoad_e3d2cc(texture2d_ms<int, access::read> tint_symbol_1) {
-  int4 res = tint_symbol_1.read(uint2(int2()), 1);
+  int4 res = tint_symbol_1.read(uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<int, access::read> tint_symbol_2) {
   textureLoad_e3d2cc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<int, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/024820.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/024820.wgsl.expected.msl
index cecc24da8d..62c3cdabae 100644
--- a/test/tint/builtins/gen/textureNumLayers/024820.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/024820.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_2) {
   textureNumLayers_024820(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/053df7.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/053df7.wgsl.expected.msl
index 4c77a41b31..68ceeb46a3 100644
--- a/test/tint/builtins/gen/textureNumLayers/053df7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/053df7.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<uint, access::sample> tint_symbol_2) {
   textureNumLayers_053df7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/058cc3.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/058cc3.wgsl.expected.msl
index 6ba3aecf54..f89aa0051f 100644
--- a/test/tint/builtins/gen/textureNumLayers/058cc3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/058cc3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureNumLayers_058cc3(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/09d05d.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/09d05d.wgsl.expected.msl
index 32372b9dab..6666c52d32 100644
--- a/test/tint/builtins/gen/textureNumLayers/09d05d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/09d05d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_09d05d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/13b4ce.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/13b4ce.wgsl.expected.msl
index e48920fa60..bb33ae6c61 100644
--- a/test/tint/builtins/gen/textureNumLayers/13b4ce.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/13b4ce.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureNumLayers_13b4ce(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/22e53b.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/22e53b.wgsl.expected.msl
index 7bfd96a3bf..5c5fa33da1 100644
--- a/test/tint/builtins/gen/textureNumLayers/22e53b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/22e53b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureNumLayers_22e53b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/562013.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/562013.wgsl.expected.msl
index 29e697e304..97a5498d1b 100644
--- a/test/tint/builtins/gen/textureNumLayers/562013.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/562013.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_562013(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/5d59cd.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/5d59cd.wgsl.expected.msl
index ecbee5958c..aa7890e4f0 100644
--- a/test/tint/builtins/gen/textureNumLayers/5d59cd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/5d59cd.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_2) {
   textureNumLayers_5d59cd(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/68a65b.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/68a65b.wgsl.expected.msl
index a71e53d3b4..906ffc528e 100644
--- a/test/tint/builtins/gen/textureNumLayers/68a65b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/68a65b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_68a65b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/778bd1.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/778bd1.wgsl.expected.msl
index 7d8fb0f57a..fc13fba684 100644
--- a/test/tint/builtins/gen/textureNumLayers/778bd1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/778bd1.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_2) {
   textureNumLayers_778bd1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/7f1937.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/7f1937.wgsl.expected.msl
index e7027f1374..05239dae46 100644
--- a/test/tint/builtins/gen/textureNumLayers/7f1937.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/7f1937.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_7f1937(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/85f980.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/85f980.wgsl.expected.msl
index ce07ab5e96..e1b10ebfdc 100644
--- a/test/tint/builtins/gen/textureNumLayers/85f980.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/85f980.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<int, access::sample> tint_symbol_2) {
   textureNumLayers_85f980(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/87953e.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/87953e.wgsl.expected.msl
index 344a256724..971482f10b 100644
--- a/test/tint/builtins/gen/textureNumLayers/87953e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/87953e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_2) {
   textureNumLayers_87953e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/893e7c.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/893e7c.wgsl.expected.msl
index 9282aa8ff0..66d329d6ed 100644
--- a/test/tint/builtins/gen/textureNumLayers/893e7c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/893e7c.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_2) {
   textureNumLayers_893e7c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/9700fb.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/9700fb.wgsl.expected.msl
index 9cd8aad10d..1b296c7c8d 100644
--- a/test/tint/builtins/gen/textureNumLayers/9700fb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/9700fb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureNumLayers_9700fb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/a216d2.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/a216d2.wgsl.expected.msl
index 67624d6bbd..427fe4f144 100644
--- a/test/tint/builtins/gen/textureNumLayers/a216d2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/a216d2.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureNumLayers_a216d2(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/cd5dc8.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/cd5dc8.wgsl.expected.msl
index d783a2d845..bff98ca56c 100644
--- a/test/tint/builtins/gen/textureNumLayers/cd5dc8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/cd5dc8.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureNumLayers_cd5dc8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/d5b228.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/d5b228.wgsl.expected.msl
index d8f24b2eae..d2a101171b 100644
--- a/test/tint/builtins/gen/textureNumLayers/d5b228.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/d5b228.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_d5b228(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/e31be1.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/e31be1.wgsl.expected.msl
index 8935085d84..3b5b47f31f 100644
--- a/test/tint/builtins/gen/textureNumLayers/e31be1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/e31be1.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureNumLayers_e31be1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/e653c0.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/e653c0.wgsl.expected.msl
index d37e9d9b69..ade75dde6a 100644
--- a/test/tint/builtins/gen/textureNumLayers/e653c0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/e653c0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_2) {
   textureNumLayers_e653c0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/ee942f.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/ee942f.wgsl.expected.msl
index 399e5bd7d9..d8f0821835 100644
--- a/test/tint/builtins/gen/textureNumLayers/ee942f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/ee942f.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureNumLayers_ee942f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/f33005.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/f33005.wgsl.expected.msl
index 78959f67b9..d4153049f6 100644
--- a/test/tint/builtins/gen/textureNumLayers/f33005.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/f33005.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureNumLayers_f33005(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/fcec98.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/fcec98.wgsl.expected.msl
index ffcba511ab..62335743da 100644
--- a/test/tint/builtins/gen/textureNumLayers/fcec98.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/fcec98.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureNumLayers_fcec98(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLayers/ff5e89.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLayers/ff5e89.wgsl.expected.msl
index 2a83087bfb..2fb050961d 100644
--- a/test/tint/builtins/gen/textureNumLayers/ff5e89.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLayers/ff5e89.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureNumLayers_ff5e89(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/076cb5.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/076cb5.wgsl.expected.msl
index e60a683f7d..db09bf4245 100644
--- a/test/tint/builtins/gen/textureNumLevels/076cb5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/076cb5.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_2) {
   textureNumLevels_076cb5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/080d95.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/080d95.wgsl.expected.msl
index c8fb39c2f1..c592ea2124 100644
--- a/test/tint/builtins/gen/textureNumLevels/080d95.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/080d95.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<int, access::sample> tint_symbol_2) {
   textureNumLevels_080d95(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/09ddd0.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/09ddd0.wgsl.expected.msl
index be2500ac8e..43e490484c 100644
--- a/test/tint/builtins/gen/textureNumLevels/09ddd0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/09ddd0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::sample> tint_symbol_2) {
   textureNumLevels_09ddd0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/105988.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/105988.wgsl.expected.msl
index 096d48d290..c27305e4e6 100644
--- a/test/tint/builtins/gen/textureNumLevels/105988.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/105988.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_2) {
   textureNumLevels_105988(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/1e6f3b.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/1e6f3b.wgsl.expected.msl
index fb21aa7064..00356f0669 100644
--- a/test/tint/builtins/gen/textureNumLevels/1e6f3b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/1e6f3b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::sample> tint_symbol_2) {
   textureNumLevels_1e6f3b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/23f750.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/23f750.wgsl.expected.msl
index dc6fd0a9c5..571d0a45f1 100644
--- a/test/tint/builtins/gen/textureNumLevels/23f750.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/23f750.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_2) {
   textureNumLevels_23f750(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/2c3575.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/2c3575.wgsl.expected.msl
index 1492f86a7d..8f7ed02625 100644
--- a/test/tint/builtins/gen/textureNumLevels/2c3575.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/2c3575.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_2) {
   textureNumLevels_2c3575(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/32a0ae.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/32a0ae.wgsl.expected.msl
index 9f66634525..11c0362e19 100644
--- a/test/tint/builtins/gen/textureNumLevels/32a0ae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/32a0ae.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::sample> tint_symbol_2) {
   textureNumLevels_32a0ae(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/5101cf.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/5101cf.wgsl.expected.msl
index 9f5a2eb7bd..4a17faabec 100644
--- a/test/tint/builtins/gen/textureNumLevels/5101cf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/5101cf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::sample> tint_symbol_2) {
   textureNumLevels_5101cf(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/51b5bb.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/51b5bb.wgsl.expected.msl
index eac33e922c..7acc809df7 100644
--- a/test/tint/builtins/gen/textureNumLevels/51b5bb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/51b5bb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::sample> tint_symbol_2) {
   textureNumLevels_51b5bb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/897aaf.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/897aaf.wgsl.expected.msl
index 90a35ee14d..5f6ffc4d3b 100644
--- a/test/tint/builtins/gen/textureNumLevels/897aaf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/897aaf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_2) {
   textureNumLevels_897aaf(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/9da7a5.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/9da7a5.wgsl.expected.msl
index 7e8f856dc7..f813901183 100644
--- a/test/tint/builtins/gen/textureNumLevels/9da7a5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/9da7a5.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::sample> tint_symbol_2) {
   textureNumLevels_9da7a5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/a91c03.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/a91c03.wgsl.expected.msl
index 2a9faacb95..4a151f0637 100644
--- a/test/tint/builtins/gen/textureNumLevels/a91c03.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/a91c03.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<int, access::sample> tint_symbol_2) {
   textureNumLevels_a91c03(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/aee7c8.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/aee7c8.wgsl.expected.msl
index 0b5172c631..a4627cd1b1 100644
--- a/test/tint/builtins/gen/textureNumLevels/aee7c8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/aee7c8.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_2) {
   textureNumLevels_aee7c8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/b1b12b.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/b1b12b.wgsl.expected.msl
index 992a0acc27..cdda66a9a0 100644
--- a/test/tint/builtins/gen/textureNumLevels/b1b12b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/b1b12b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_2) {
   textureNumLevels_b1b12b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/b4f5ea.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/b4f5ea.wgsl.expected.msl
index f355a6d3e9..8c251ea96b 100644
--- a/test/tint/builtins/gen/textureNumLevels/b4f5ea.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/b4f5ea.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::sample> tint_symbol_2) {
   textureNumLevels_b4f5ea(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/d004a9.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/d004a9.wgsl.expected.msl
index f3a4601862..d0d19fe935 100644
--- a/test/tint/builtins/gen/textureNumLevels/d004a9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/d004a9.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::sample> tint_symbol_2) {
   textureNumLevels_d004a9(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/dca09e.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/dca09e.wgsl.expected.msl
index 2b06e6b75d..e7813c56e5 100644
--- a/test/tint/builtins/gen/textureNumLevels/dca09e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/dca09e.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_2) {
   textureNumLevels_dca09e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/e67231.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/e67231.wgsl.expected.msl
index f4f23bc00c..0a9f1ef9b3 100644
--- a/test/tint/builtins/gen/textureNumLevels/e67231.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/e67231.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_2) {
   textureNumLevels_e67231(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/ed078b.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/ed078b.wgsl.expected.msl
index 65e9dac98c..74d65639d5 100644
--- a/test/tint/builtins/gen/textureNumLevels/ed078b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/ed078b.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<uint, access::sample> tint_symbol_2) {
   textureNumLevels_ed078b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/f46ec6.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/f46ec6.wgsl.expected.msl
index 64bd4855da..83873b6123 100644
--- a/test/tint/builtins/gen/textureNumLevels/f46ec6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/f46ec6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<uint, access::sample> tint_symbol_2) {
   textureNumLevels_f46ec6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<uint, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumLevels/f5828d.wgsl.expected.msl b/test/tint/builtins/gen/textureNumLevels/f5828d.wgsl.expected.msl
index 6c562b82b3..0a150257cc 100644
--- a/test/tint/builtins/gen/textureNumLevels/f5828d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumLevels/f5828d.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_2) {
   textureNumLevels_f5828d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumSamples/2c6f14.wgsl.expected.msl b/test/tint/builtins/gen/textureNumSamples/2c6f14.wgsl.expected.msl
index 465294cca7..b062129875 100644
--- a/test/tint/builtins/gen/textureNumSamples/2c6f14.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumSamples/2c6f14.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<float, access::read> tint_symbol_2) {
   textureNumSamples_2c6f14(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumSamples/42f8bb.wgsl.expected.msl b/test/tint/builtins/gen/textureNumSamples/42f8bb.wgsl.expected.msl
index 77c2cc9578..d951a7eee8 100644
--- a/test/tint/builtins/gen/textureNumSamples/42f8bb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumSamples/42f8bb.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<uint, access::read> tint_symbol_2) {
   textureNumSamples_42f8bb(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<uint, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumSamples/449d23.wgsl.expected.msl b/test/tint/builtins/gen/textureNumSamples/449d23.wgsl.expected.msl
index ef9c562780..18e0ad7500 100644
--- a/test/tint/builtins/gen/textureNumSamples/449d23.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumSamples/449d23.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_ms<int, access::read> tint_symbol_2) {
   textureNumSamples_449d23(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_ms<int, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureNumSamples/a3c8a0.wgsl.expected.msl b/test/tint/builtins/gen/textureNumSamples/a3c8a0.wgsl.expected.msl
index 011207af71..c3db04e5e6 100644
--- a/test/tint/builtins/gen/textureNumSamples/a3c8a0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureNumSamples/a3c8a0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_2) {
   textureNumSamples_a3c8a0(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_ms<float, access::read> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/02aa9b.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/02aa9b.wgsl.expected.msl
index 13ceaa0e5a..2a204941c2 100644
--- a/test/tint/builtins/gen/textureSample/02aa9b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/02aa9b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_02aa9b(texture2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), 1, int2());
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1, int2(0));
 }
 
 fragment void fragment_main(texture2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/100dc0.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/100dc0.wgsl.expected.msl
index 0d15b26efc..26bfe5f405 100644
--- a/test/tint/builtins/gen/textureSample/100dc0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/100dc0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_100dc0(texture3d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), int3());
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), int3(0));
 }
 
 fragment void fragment_main(texture3d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/38bbb9.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/38bbb9.wgsl.expected.msl
index 8fc7af49ef..7884b3124b 100644
--- a/test/tint/builtins/gen/textureSample/38bbb9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/38bbb9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_38bbb9(depth2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float2());
+  float res = tint_symbol.sample(tint_symbol_1, float2(0.0f));
 }
 
 fragment void fragment_main(depth2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/3b50bd.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/3b50bd.wgsl.expected.msl
index 2d5945b1ff..a63d38d491 100644
--- a/test/tint/builtins/gen/textureSample/3b50bd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/3b50bd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_3b50bd(texture3d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3());
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f));
 }
 
 fragment void fragment_main(texture3d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/4dd1bf.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/4dd1bf.wgsl.expected.msl
index 3424a0e059..f392da9c96 100644
--- a/test/tint/builtins/gen/textureSample/4dd1bf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/4dd1bf.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_4dd1bf(texturecube_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), 1);
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), 1);
 }
 
 fragment void fragment_main(texturecube_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/51b514.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/51b514.wgsl.expected.msl
index 85ec0ef4b4..a8e99fb996 100644
--- a/test/tint/builtins/gen/textureSample/51b514.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/51b514.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_51b514(texture2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2());
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f));
 }
 
 fragment void fragment_main(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/667d76.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/667d76.wgsl.expected.msl
index 06381b01b6..79c7382bd8 100644
--- a/test/tint/builtins/gen/textureSample/667d76.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/667d76.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_667d76(depth2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float2(), int2());
+  float res = tint_symbol.sample(tint_symbol_1, float2(0.0f), int2(0));
 }
 
 fragment void fragment_main(depth2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/6717ca.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/6717ca.wgsl.expected.msl
index 9753b100ba..aa18356a8e 100644
--- a/test/tint/builtins/gen/textureSample/6717ca.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/6717ca.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_6717ca(texture2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), 1);
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1);
 }
 
 fragment void fragment_main(texture2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/7c3baa.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/7c3baa.wgsl.expected.msl
index 2e192ca218..a3b9549831 100644
--- a/test/tint/builtins/gen/textureSample/7c3baa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/7c3baa.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_7c3baa(texture2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), int2());
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), int2(0));
 }
 
 fragment void fragment_main(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/7e9ffd.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/7e9ffd.wgsl.expected.msl
index 6b7b50bdca..7ed4a39b83 100644
--- a/test/tint/builtins/gen/textureSample/7e9ffd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/7e9ffd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_7e9ffd(depth2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float2(), 1);
+  float res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1);
 }
 
 fragment void fragment_main(depth2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/8522e7.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/8522e7.wgsl.expected.msl
index a2c56ffc12..f2d9eebf41 100644
--- a/test/tint/builtins/gen/textureSample/8522e7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/8522e7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_8522e7(depth2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float2(), 1, int2());
+  float res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1, int2(0));
 }
 
 fragment void fragment_main(depth2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/c2f4e8.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/c2f4e8.wgsl.expected.msl
index 824463db88..812a3e0a2c 100644
--- a/test/tint/builtins/gen/textureSample/c2f4e8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/c2f4e8.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_c2f4e8(depthcube_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float3(), 1);
+  float res = tint_symbol.sample(tint_symbol_1, float3(0.0f), 1);
 }
 
 fragment void fragment_main(depthcube_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/e53267.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/e53267.wgsl.expected.msl
index b7190c8500..6953ad27ee 100644
--- a/test/tint/builtins/gen/textureSample/e53267.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/e53267.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_e53267(texturecube<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3());
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f));
 }
 
 fragment void fragment_main(texturecube<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSample/ea7030.wgsl.expected.msl b/test/tint/builtins/gen/textureSample/ea7030.wgsl.expected.msl
index 3497e1566c..295b3acf19 100644
--- a/test/tint/builtins/gen/textureSample/ea7030.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSample/ea7030.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSample_ea7030(depthcube<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample(tint_symbol_1, float3());
+  float res = tint_symbol.sample(tint_symbol_1, float3(0.0f));
 }
 
 fragment void fragment_main(depthcube<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/53b9f7.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/53b9f7.wgsl.expected.msl
index 675e006688..dde5bfe38d 100644
--- a/test/tint/builtins/gen/textureSampleBias/53b9f7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/53b9f7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_53b9f7(texturecube<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), bias(1.0f));
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), bias(1.0f));
 }
 
 fragment void fragment_main(texturecube<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/65ac50.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/65ac50.wgsl.expected.msl
index ee8021382f..34cf4c8526 100644
--- a/test/tint/builtins/gen/textureSampleBias/65ac50.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/65ac50.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_65ac50(texture2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), 1, bias(1.0f), int2());
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1, bias(1.0f), int2(0));
 }
 
 fragment void fragment_main(texture2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/6a9113.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/6a9113.wgsl.expected.msl
index aae831bb7f..ac41f09b68 100644
--- a/test/tint/builtins/gen/textureSampleBias/6a9113.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/6a9113.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_6a9113(texture2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), bias(1.0f));
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), bias(1.0f));
 }
 
 fragment void fragment_main(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/80e579.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/80e579.wgsl.expected.msl
index 357833db91..0a6cba8e3b 100644
--- a/test/tint/builtins/gen/textureSampleBias/80e579.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/80e579.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_80e579(texture2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), 1, bias(1.0f));
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), 1, bias(1.0f));
 }
 
 fragment void fragment_main(texture2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/81c19a.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/81c19a.wgsl.expected.msl
index 2d6dacdd03..f51dcbfcb6 100644
--- a/test/tint/builtins/gen/textureSampleBias/81c19a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/81c19a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_81c19a(texture2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float2(), bias(1.0f), int2());
+  float4 res = tint_symbol.sample(tint_symbol_1, float2(0.0f), bias(1.0f), int2(0));
 }
 
 fragment void fragment_main(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/d3fa1b.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/d3fa1b.wgsl.expected.msl
index 80a9324d40..07cd37c50e 100644
--- a/test/tint/builtins/gen/textureSampleBias/d3fa1b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/d3fa1b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_d3fa1b(texture3d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), bias(1.0f));
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), bias(1.0f));
 }
 
 fragment void fragment_main(texture3d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/df91bb.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/df91bb.wgsl.expected.msl
index 312611422a..020cab3584 100644
--- a/test/tint/builtins/gen/textureSampleBias/df91bb.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/df91bb.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_df91bb(texture3d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), bias(1.0f), int3());
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), bias(1.0f), int3(0));
 }
 
 fragment void fragment_main(texture3d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleBias/eed7c4.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleBias/eed7c4.wgsl.expected.msl
index 123b4f105a..de4a66326a 100644
--- a/test/tint/builtins/gen/textureSampleBias/eed7c4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleBias/eed7c4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleBias_eed7c4(texturecube_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float4 res = tint_symbol.sample(tint_symbol_1, float3(), 1, bias(1.0f));
+  float4 res = tint_symbol.sample(tint_symbol_1, float3(0.0f), 1, bias(1.0f));
 }
 
 fragment void fragment_main(texturecube_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/25fcd1.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/25fcd1.wgsl.expected.msl
index f076683192..469a65ac3c 100644
--- a/test/tint/builtins/gen/textureSampleCompare/25fcd1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/25fcd1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_25fcd1(depth2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float2(), 1.0f, int2());
+  float res = tint_symbol.sample_compare(tint_symbol_1, float2(0.0f), 1.0f, int2(0));
 }
 
 fragment void fragment_main(depth2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/3a5923.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/3a5923.wgsl.expected.msl
index eb88f71197..6b5e76d826 100644
--- a/test/tint/builtins/gen/textureSampleCompare/3a5923.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/3a5923.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_3a5923(depth2d<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float2(), 1.0f);
+  float res = tint_symbol.sample_compare(tint_symbol_1, float2(0.0f), 1.0f);
 }
 
 fragment void fragment_main(depth2d<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/63fb83.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/63fb83.wgsl.expected.msl
index a0bb49bc55..bdcf85c11b 100644
--- a/test/tint/builtins/gen/textureSampleCompare/63fb83.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/63fb83.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_63fb83(depthcube<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float3(), 1.0f);
+  float res = tint_symbol.sample_compare(tint_symbol_1, float3(0.0f), 1.0f);
 }
 
 fragment void fragment_main(depthcube<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/98b85c.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/98b85c.wgsl.expected.msl
index d92c04ce1f..6e4476f804 100644
--- a/test/tint/builtins/gen/textureSampleCompare/98b85c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/98b85c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_98b85c(depth2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float2(), 1, 1.0f, int2());
+  float res = tint_symbol.sample_compare(tint_symbol_1, float2(0.0f), 1, 1.0f, int2(0));
 }
 
 fragment void fragment_main(depth2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/a3ca7e.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/a3ca7e.wgsl.expected.msl
index abb06a0e97..46e23e1e87 100644
--- a/test/tint/builtins/gen/textureSampleCompare/a3ca7e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/a3ca7e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_a3ca7e(depthcube_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float3(), 1, 1.0f);
+  float res = tint_symbol.sample_compare(tint_symbol_1, float3(0.0f), 1, 1.0f);
 }
 
 fragment void fragment_main(depthcube_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompare/dd431d.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompare/dd431d.wgsl.expected.msl
index 3b9cc896ef..50d2af1fd0 100644
--- a/test/tint/builtins/gen/textureSampleCompare/dd431d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompare/dd431d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompare_dd431d(depth2d_array<float, access::sample> tint_symbol, sampler tint_symbol_1) {
-  float res = tint_symbol.sample_compare(tint_symbol_1, float2(), 1, 1.0f);
+  float res = tint_symbol.sample_compare(tint_symbol_1, float2(0.0f), 1, 1.0f);
 }
 
 fragment void fragment_main(depth2d_array<float, access::sample> tint_symbol_2 [[texture(0)]], sampler tint_symbol_3 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/011a8f.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/011a8f.wgsl.expected.msl
index 07485ae20b..e076c6e877 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/011a8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/011a8f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_011a8f(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(), 1, 1.0f, level(0), int2());
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(0.0f), 1, 1.0f, level(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_011a8f(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/1116ed.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/1116ed.wgsl.expected.msl
index afa4f782f8..822c2353bd 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/1116ed.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/1116ed.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_1116ed(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(), 1, 1.0f, level(0));
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(0.0f), 1, 1.0f, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_1116ed(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/1568e3.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/1568e3.wgsl.expected.msl
index 3c3babe1a8..7dffcdd0f4 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/1568e3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/1568e3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_1568e3(depthcube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float3(), 1.0f, level(0));
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float3(0.0f), 1.0f, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_1568e3(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/2ad2b1.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/2ad2b1.wgsl.expected.msl
index 0757bfe25d..cc8b9a7815 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/2ad2b1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/2ad2b1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_2ad2b1(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(), 1.0f, level(0));
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(0.0f), 1.0f, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_2ad2b1(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/4cf3a2.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/4cf3a2.wgsl.expected.msl
index a2db2a966c..8f6c17ea46 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/4cf3a2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/4cf3a2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_4cf3a2(depthcube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float3(), 1, 1.0f, level(0));
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float3(0.0f), 1, 1.0f, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_4cf3a2(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleCompareLevel/f8121c.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleCompareLevel/f8121c.wgsl.expected.msl
index c72e97bfb3..d63940c9b0 100644
--- a/test/tint/builtins/gen/textureSampleCompareLevel/f8121c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleCompareLevel/f8121c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleCompareLevel_f8121c(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(), 1.0f, level(0), int2());
+  float res = tint_symbol_1.sample_compare(tint_symbol_2, float2(0.0f), 1.0f, level(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleCompareLevel_f8121c(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/21402b.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/21402b.wgsl.expected.msl
index 611f192f40..e441de51be 100644
--- a/test/tint/builtins/gen/textureSampleGrad/21402b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/21402b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_21402b(texture3d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), gradient3d(float3(), float3()));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), gradient3d(float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_21402b(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/2ecd8f.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/2ecd8f.wgsl.expected.msl
index cb35a40226..8b790203e9 100644
--- a/test/tint/builtins/gen/textureSampleGrad/2ecd8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/2ecd8f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_2ecd8f(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, gradient2d(float2(), float2()));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, gradient2d(float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_2ecd8f(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/468f88.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/468f88.wgsl.expected.msl
index 984039bb85..1676dd3a8f 100644
--- a/test/tint/builtins/gen/textureSampleGrad/468f88.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/468f88.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_468f88(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), gradient2d(float2(), float2()), int2());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), gradient2d(float2(0.0f), float2(0.0f)), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_468f88(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/521263.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/521263.wgsl.expected.msl
index fdf14137f5..902ba71b6b 100644
--- a/test/tint/builtins/gen/textureSampleGrad/521263.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/521263.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_521263(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), gradient2d(float2(), float2()));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), gradient2d(float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_521263(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/5312f4.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/5312f4.wgsl.expected.msl
index e76967f74d..397cc5f3c1 100644
--- a/test/tint/builtins/gen/textureSampleGrad/5312f4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/5312f4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_5312f4(texturecube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), gradientcube(float3(), float3()));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), gradientcube(float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_5312f4(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/872f00.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/872f00.wgsl.expected.msl
index c4756df015..6c57c11760 100644
--- a/test/tint/builtins/gen/textureSampleGrad/872f00.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/872f00.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_872f00(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, gradient2d(float2(), float2()), int2());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, gradient2d(float2(0.0f), float2(0.0f)), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_872f00(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/e383db.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/e383db.wgsl.expected.msl
index 0df18f03b0..fcee1d0eb3 100644
--- a/test/tint/builtins/gen/textureSampleGrad/e383db.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/e383db.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_e383db(texturecube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), 1, gradientcube(float3(), float3()));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), 1, gradientcube(float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_e383db(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleGrad/e9a2f7.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleGrad/e9a2f7.wgsl.expected.msl
index 8c31911f3c..4b6c3aa43c 100644
--- a/test/tint/builtins/gen/textureSampleGrad/e9a2f7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleGrad/e9a2f7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleGrad_e9a2f7(texture3d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), gradient3d(float3(), float3()), int3());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), gradient3d(float3(0.0f), float3(0.0f)), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleGrad_e9a2f7(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/02be59.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/02be59.wgsl.expected.msl
index a8efa2b92d..a414d5244c 100644
--- a/test/tint/builtins/gen/textureSampleLevel/02be59.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/02be59.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_02be59(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float2(), level(0));
+  float res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_02be59(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/0bdd9a.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/0bdd9a.wgsl.expected.msl
index 5250bb5b44..8d56eb601b 100644
--- a/test/tint/builtins/gen/textureSampleLevel/0bdd9a.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/0bdd9a.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_0bdd9a(texturecube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), 1, level(1.0f));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), 1, level(1.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_0bdd9a(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/1b0291.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/1b0291.wgsl.expected.msl
index d16918218e..3ea7400f2b 100644
--- a/test/tint/builtins/gen/textureSampleLevel/1b0291.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/1b0291.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_1b0291(depthcube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float3(), level(0));
+  float res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_1b0291(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/1bf73e.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/1bf73e.wgsl.expected.msl
index e792a86a11..9f8510d59a 100644
--- a/test/tint/builtins/gen/textureSampleLevel/1bf73e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/1bf73e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_1bf73e(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, level(0));
+  float res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_1bf73e(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/302be4.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/302be4.wgsl.expected.msl
index 81fb6d9992..92ace1e5ec 100644
--- a/test/tint/builtins/gen/textureSampleLevel/302be4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/302be4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_302be4(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, level(1.0f));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, level(1.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_302be4(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/47daa4.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/47daa4.wgsl.expected.msl
index 932bcb38b8..aad3dda42c 100644
--- a/test/tint/builtins/gen/textureSampleLevel/47daa4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/47daa4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_47daa4(depth2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float2(), level(0), int2());
+  float res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), level(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_47daa4(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/690d95.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/690d95.wgsl.expected.msl
index 508a589e31..ef3cb4c0ef 100644
--- a/test/tint/builtins/gen/textureSampleLevel/690d95.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/690d95.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_690d95(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), level(1.0f), int2());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), level(1.0f), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_690d95(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/979816.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/979816.wgsl.expected.msl
index abe1cccfd6..57d9745388 100644
--- a/test/tint/builtins/gen/textureSampleLevel/979816.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/979816.wgsl.expected.msl
@@ -42,7 +42,7 @@ float4 textureSampleExternal(texture2d<float, access::sample> plane0, texture2d<
 }
 
 void textureSampleLevel_979816(texture2d<float, access::sample> tint_symbol_1, texture2d<float, access::sample> tint_symbol_2, sampler tint_symbol_3, const constant ExternalTextureParams* const tint_symbol_4) {
-  float4 res = textureSampleExternal(tint_symbol_1, tint_symbol_2, tint_symbol_3, float2(), *(tint_symbol_4));
+  float4 res = textureSampleExternal(tint_symbol_1, tint_symbol_2, tint_symbol_3, float2(0.0f), *(tint_symbol_4));
 }
 
 struct tint_symbol {
@@ -51,7 +51,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_5, texture2d<float, access::sample> tint_symbol_6, sampler tint_symbol_7, const constant ExternalTextureParams* const tint_symbol_8) {
   textureSampleLevel_979816(tint_symbol_5, tint_symbol_6, tint_symbol_7, tint_symbol_8);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_9 [[texture(0)]], texture2d<float, access::sample> tint_symbol_10 [[texture(1)]], sampler tint_symbol_11 [[sampler(0)]], const constant ExternalTextureParams* tint_symbol_12 [[buffer(2)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/9bd37b.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/9bd37b.wgsl.expected.msl
index b1f5d43ba7..6559dc0d5c 100644
--- a/test/tint/builtins/gen/textureSampleLevel/9bd37b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/9bd37b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_9bd37b(texture3d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), level(1.0f), int3());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), level(1.0f), int3(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_9bd37b(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/a4af26.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/a4af26.wgsl.expected.msl
index 4fc39a8aae..f81889a5dd 100644
--- a/test/tint/builtins/gen/textureSampleLevel/a4af26.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/a4af26.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_a4af26(texture2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, level(1.0f), int2());
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, level(1.0f), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_a4af26(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/abfcc0.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/abfcc0.wgsl.expected.msl
index 6bf2714ca4..26f2cb2781 100644
--- a/test/tint/builtins/gen/textureSampleLevel/abfcc0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/abfcc0.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_abfcc0(texture3d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), level(1.0f));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), level(1.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_abfcc0(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/ae5e39.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/ae5e39.wgsl.expected.msl
index 43f1b2b126..483402a34e 100644
--- a/test/tint/builtins/gen/textureSampleLevel/ae5e39.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/ae5e39.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_ae5e39(depthcube_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float3(), 1, level(0));
+  float res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), 1, level(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depthcube_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_ae5e39(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depthcube_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/ba93b3.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/ba93b3.wgsl.expected.msl
index 411b77e098..3bf4756242 100644
--- a/test/tint/builtins/gen/textureSampleLevel/ba93b3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/ba93b3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_ba93b3(depth2d_array<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float res = tint_symbol_1.sample(tint_symbol_2, float2(), 1, level(0), int2());
+  float res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), 1, level(0), int2(0));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(depth2d_array<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_ba93b3(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(depth2d_array<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/c32df7.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/c32df7.wgsl.expected.msl
index 0dccab6296..d6a2800256 100644
--- a/test/tint/builtins/gen/textureSampleLevel/c32df7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/c32df7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_c32df7(texturecube<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(), level(1.0f));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float3(0.0f), level(1.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texturecube<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_c32df7(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texturecube<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureSampleLevel/c6aca6.wgsl.expected.msl b/test/tint/builtins/gen/textureSampleLevel/c6aca6.wgsl.expected.msl
index 804b0eb85b..a24cb0f08f 100644
--- a/test/tint/builtins/gen/textureSampleLevel/c6aca6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureSampleLevel/c6aca6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureSampleLevel_c6aca6(texture2d<float, access::sample> tint_symbol_1, sampler tint_symbol_2) {
-  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(), level(1.0f));
+  float4 res = tint_symbol_1.sample(tint_symbol_2, float2(0.0f), level(1.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
   textureSampleLevel_c6aca6(tint_symbol_3, tint_symbol_4);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/05ce15.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/05ce15.wgsl.expected.msl
index 96f17cc685..3a48638c93 100644
--- a/test/tint/builtins/gen/textureStore/05ce15.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/05ce15.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_05ce15(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_05ce15(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/064c7f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/064c7f.wgsl.expected.msl
index 7e40f3e340..06feb27cf8 100644
--- a/test/tint/builtins/gen/textureStore/064c7f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/064c7f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_064c7f(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_064c7f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/068641.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/068641.wgsl.expected.msl
index dc1bdc8860..1d3f94f71e 100644
--- a/test/tint/builtins/gen/textureStore/068641.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/068641.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_068641(texture3d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint3(int3()));
+  tint_symbol_1.write(uint4(0u), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureStore_068641(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/0af6b5.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/0af6b5.wgsl.expected.msl
index 74b0941fa4..dfe2b65849 100644
--- a/test/tint/builtins/gen/textureStore/0af6b5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/0af6b5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_0af6b5(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_0af6b5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/0c3dff.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/0c3dff.wgsl.expected.msl
index 408f6948dc..64d849e1c7 100644
--- a/test/tint/builtins/gen/textureStore/0c3dff.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/0c3dff.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_0c3dff(texture2d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()));
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureStore_0c3dff(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/102722.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/102722.wgsl.expected.msl
index 5846677897..c4a5d5a5e8 100644
--- a/test/tint/builtins/gen/textureStore/102722.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/102722.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_102722(texture1d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint(1));
+  tint_symbol_1.write(uint4(0u), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureStore_102722(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/1bbd08.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/1bbd08.wgsl.expected.msl
index abc4ff09e6..c05a7e5254 100644
--- a/test/tint/builtins/gen/textureStore/1bbd08.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/1bbd08.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_1bbd08(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_1bbd08(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/1c02e7.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/1c02e7.wgsl.expected.msl
index 2f25bbfa7b..a17b971cc5 100644
--- a/test/tint/builtins/gen/textureStore/1c02e7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/1c02e7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_1c02e7(texture2d_array<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()), 1);
+  tint_symbol_1.write(int4(0), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureStore_1c02e7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/22d955.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/22d955.wgsl.expected.msl
index 41c9ba061f..4bf37e188a 100644
--- a/test/tint/builtins/gen/textureStore/22d955.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/22d955.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_22d955(texture2d_array<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()), 1);
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureStore_22d955(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/26bf70.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/26bf70.wgsl.expected.msl
index b016d7fa02..9b32850462 100644
--- a/test/tint/builtins/gen/textureStore/26bf70.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/26bf70.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_26bf70(texture2d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()));
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureStore_26bf70(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/2796b4.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/2796b4.wgsl.expected.msl
index 4c315532b3..0fc2e68278 100644
--- a/test/tint/builtins/gen/textureStore/2796b4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/2796b4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_2796b4(texture3d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint3(int3()));
+  tint_symbol_1.write(int4(0), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureStore_2796b4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/2ac6c7.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/2ac6c7.wgsl.expected.msl
index 5fb901be62..dc2cb995d3 100644
--- a/test/tint/builtins/gen/textureStore/2ac6c7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/2ac6c7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_2ac6c7(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_2ac6c7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/2eb2a4.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/2eb2a4.wgsl.expected.msl
index 52eff0b1a3..015e052c30 100644
--- a/test/tint/builtins/gen/textureStore/2eb2a4.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/2eb2a4.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_2eb2a4(texture1d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint(1));
+  tint_symbol_1.write(uint4(0u), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureStore_2eb2a4(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/2ed2a3.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/2ed2a3.wgsl.expected.msl
index 3f46f67f3f..e49cb9323f 100644
--- a/test/tint/builtins/gen/textureStore/2ed2a3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/2ed2a3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_2ed2a3(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_2ed2a3(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/31745b.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/31745b.wgsl.expected.msl
index 21a80b4087..fab9cdc9ef 100644
--- a/test/tint/builtins/gen/textureStore/31745b.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/31745b.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_31745b(texture2d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()));
+  tint_symbol_1.write(int4(0), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureStore_31745b(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/32f368.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/32f368.wgsl.expected.msl
index 869f74d9de..f60e099139 100644
--- a/test/tint/builtins/gen/textureStore/32f368.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/32f368.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_32f368(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_32f368(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/331aee.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/331aee.wgsl.expected.msl
index aab61d34c6..b79b25e9a7 100644
--- a/test/tint/builtins/gen/textureStore/331aee.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/331aee.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_331aee(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_331aee(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/38e8d7.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/38e8d7.wgsl.expected.msl
index 7b2b0f17a2..ac1cd5a628 100644
--- a/test/tint/builtins/gen/textureStore/38e8d7.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/38e8d7.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_38e8d7(texture2d_array<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()), 1);
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureStore_38e8d7(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/3a52ac.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/3a52ac.wgsl.expected.msl
index 6dc9c94aa0..b40ea4b89b 100644
--- a/test/tint/builtins/gen/textureStore/3a52ac.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/3a52ac.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_3a52ac(texture2d_array<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()), 1);
+  tint_symbol_1.write(int4(0), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureStore_3a52ac(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/3bb7a1.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/3bb7a1.wgsl.expected.msl
index d3dcf83376..8cd1fce5b1 100644
--- a/test/tint/builtins/gen/textureStore/3bb7a1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/3bb7a1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_3bb7a1(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_3bb7a1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/3bec15.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/3bec15.wgsl.expected.msl
index 63deae2576..b08f7bbec9 100644
--- a/test/tint/builtins/gen/textureStore/3bec15.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/3bec15.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_3bec15(texture1d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint(1));
+  tint_symbol_1.write(uint4(0u), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureStore_3bec15(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/441ba8.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/441ba8.wgsl.expected.msl
index ddd88f9f31..4d5772e40f 100644
--- a/test/tint/builtins/gen/textureStore/441ba8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/441ba8.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_441ba8(texture3d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint3(int3()));
+  tint_symbol_1.write(uint4(0u), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureStore_441ba8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/4fc057.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/4fc057.wgsl.expected.msl
index 73b2de8c04..f3c66c8e2a 100644
--- a/test/tint/builtins/gen/textureStore/4fc057.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/4fc057.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_4fc057(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_4fc057(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/5a2f8f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/5a2f8f.wgsl.expected.msl
index a1a8470722..dde59b81dc 100644
--- a/test/tint/builtins/gen/textureStore/5a2f8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/5a2f8f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_5a2f8f(texture1d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint(1));
+  tint_symbol_1.write(int4(0), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureStore_5a2f8f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/60975f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/60975f.wgsl.expected.msl
index 38bf10c6f7..bc1e09a691 100644
--- a/test/tint/builtins/gen/textureStore/60975f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/60975f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_60975f(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_60975f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/682fd6.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/682fd6.wgsl.expected.msl
index 592b20f09a..9fddf06672 100644
--- a/test/tint/builtins/gen/textureStore/682fd6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/682fd6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_682fd6(texture2d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()));
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureStore_682fd6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/6b75c3.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/6b75c3.wgsl.expected.msl
index 7f987b232a..a92d69acdd 100644
--- a/test/tint/builtins/gen/textureStore/6b75c3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/6b75c3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_6b75c3(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_6b75c3(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/6b80d2.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/6b80d2.wgsl.expected.msl
index 5db31c8e0c..b73343e5d3 100644
--- a/test/tint/builtins/gen/textureStore/6b80d2.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/6b80d2.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_6b80d2(texture1d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint(1));
+  tint_symbol_1.write(int4(0), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureStore_6b80d2(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/6cff2e.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/6cff2e.wgsl.expected.msl
index b086eed446..8a1d6102a0 100644
--- a/test/tint/builtins/gen/textureStore/6cff2e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/6cff2e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_6cff2e(texture2d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()));
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureStore_6cff2e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/6da692.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/6da692.wgsl.expected.msl
index a83fda74df..49e92c6810 100644
--- a/test/tint/builtins/gen/textureStore/6da692.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/6da692.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_6da692(texture2d_array<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()), 1);
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureStore_6da692(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/731349.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/731349.wgsl.expected.msl
index 2346b59a83..7d335e8646 100644
--- a/test/tint/builtins/gen/textureStore/731349.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/731349.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_731349(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_731349(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/752da6.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/752da6.wgsl.expected.msl
index 3c4ff0b185..74e6cb2e5b 100644
--- a/test/tint/builtins/gen/textureStore/752da6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/752da6.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_752da6(texture2d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()));
+  tint_symbol_1.write(int4(0), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureStore_752da6(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/77c0ae.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/77c0ae.wgsl.expected.msl
index 051bd4e07b..b5866746b7 100644
--- a/test/tint/builtins/gen/textureStore/77c0ae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/77c0ae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_77c0ae(texture2d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()));
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<uint, access::write> tint_symbol_2) {
   textureStore_77c0ae(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/7cec8d.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/7cec8d.wgsl.expected.msl
index 00250f3235..912d7c6124 100644
--- a/test/tint/builtins/gen/textureStore/7cec8d.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/7cec8d.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_7cec8d(texture2d_array<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()), 1);
+  tint_symbol_1.write(int4(0), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureStore_7cec8d(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/7f7fae.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/7f7fae.wgsl.expected.msl
index 8b11e389dc..979f11c0bf 100644
--- a/test/tint/builtins/gen/textureStore/7f7fae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/7f7fae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_7f7fae(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_7f7fae(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/804942.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/804942.wgsl.expected.msl
index df25a3242a..f96343905c 100644
--- a/test/tint/builtins/gen/textureStore/804942.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/804942.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_804942(texture2d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()));
+  tint_symbol_1.write(int4(0), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureStore_804942(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/805dae.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/805dae.wgsl.expected.msl
index bd51b5ae12..2dfb818f79 100644
--- a/test/tint/builtins/gen/textureStore/805dae.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/805dae.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_805dae(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_805dae(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/83bcc1.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/83bcc1.wgsl.expected.msl
index f0be4b0be3..da45ded04d 100644
--- a/test/tint/builtins/gen/textureStore/83bcc1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/83bcc1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_83bcc1(texture1d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint(1));
+  tint_symbol_1.write(uint4(0u), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureStore_83bcc1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/872747.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/872747.wgsl.expected.msl
index 916a2be74c..2c0461e1d7 100644
--- a/test/tint/builtins/gen/textureStore/872747.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/872747.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_872747(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_872747(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/8e0479.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/8e0479.wgsl.expected.msl
index b7b344bc02..3dcab98640 100644
--- a/test/tint/builtins/gen/textureStore/8e0479.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/8e0479.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_8e0479(texture2d_array<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()), 1);
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureStore_8e0479(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/8f71a1.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/8f71a1.wgsl.expected.msl
index 097f768caa..0e8dc88b67 100644
--- a/test/tint/builtins/gen/textureStore/8f71a1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/8f71a1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_8f71a1(texture3d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint3(int3()));
+  tint_symbol_1.write(int4(0), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureStore_8f71a1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/969534.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/969534.wgsl.expected.msl
index 9792266077..c994c241da 100644
--- a/test/tint/builtins/gen/textureStore/969534.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/969534.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_969534(texture1d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint(1));
+  tint_symbol_1.write(int4(0), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureStore_969534(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/9a3ecc.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/9a3ecc.wgsl.expected.msl
index 7977030aad..e91a11afd8 100644
--- a/test/tint/builtins/gen/textureStore/9a3ecc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/9a3ecc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_9a3ecc(texture3d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint3(int3()));
+  tint_symbol_1.write(int4(0), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureStore_9a3ecc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/9d9cd5.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/9d9cd5.wgsl.expected.msl
index 6e704caace..946884618b 100644
--- a/test/tint/builtins/gen/textureStore/9d9cd5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/9d9cd5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_9d9cd5(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_9d9cd5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/9e3ec5.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/9e3ec5.wgsl.expected.msl
index 9bdfb7a314..96998a48e6 100644
--- a/test/tint/builtins/gen/textureStore/9e3ec5.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/9e3ec5.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_9e3ec5(texture2d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()));
+  tint_symbol_1.write(int4(0), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureStore_9e3ec5(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/ac67aa.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/ac67aa.wgsl.expected.msl
index f61229ed22..a72b97ca2a 100644
--- a/test/tint/builtins/gen/textureStore/ac67aa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/ac67aa.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_ac67aa(texture3d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint3(int3()));
+  tint_symbol_1.write(uint4(0u), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureStore_ac67aa(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/b706b1.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/b706b1.wgsl.expected.msl
index a28cf356c7..270213d33f 100644
--- a/test/tint/builtins/gen/textureStore/b706b1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/b706b1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_b706b1(texture3d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint3(int3()));
+  tint_symbol_1.write(int4(0), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureStore_b706b1(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/bbcb7f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/bbcb7f.wgsl.expected.msl
index 8eff861150..1d091aba00 100644
--- a/test/tint/builtins/gen/textureStore/bbcb7f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/bbcb7f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_bbcb7f(texture2d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()));
+  tint_symbol_1.write(int4(0), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<int, access::write> tint_symbol_2) {
   textureStore_bbcb7f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/be6e30.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/be6e30.wgsl.expected.msl
index 5ed9b5f0aa..acb6216e9f 100644
--- a/test/tint/builtins/gen/textureStore/be6e30.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/be6e30.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_be6e30(texture2d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()));
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d<float, access::write> tint_symbol_2) {
   textureStore_be6e30(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/bf775c.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/bf775c.wgsl.expected.msl
index d722999e9c..3d8210b9e0 100644
--- a/test/tint/builtins/gen/textureStore/bf775c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/bf775c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_bf775c(texture1d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint(1));
+  tint_symbol_1.write(int4(0), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureStore_bf775c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/c5af1e.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/c5af1e.wgsl.expected.msl
index 2ed8fe7d4d..5421957218 100644
--- a/test/tint/builtins/gen/textureStore/c5af1e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/c5af1e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_c5af1e(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_c5af1e(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/c863be.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/c863be.wgsl.expected.msl
index cea5b8e7a4..bbe2282da9 100644
--- a/test/tint/builtins/gen/textureStore/c863be.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/c863be.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_c863be(texture2d_array<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint2(int2()), 1);
+  tint_symbol_1.write(float4(0.0f), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<float, access::write> tint_symbol_2) {
   textureStore_c863be(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/d73b5c.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/d73b5c.wgsl.expected.msl
index 44ed0f4d8f..c564d6d96b 100644
--- a/test/tint/builtins/gen/textureStore/d73b5c.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/d73b5c.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_d73b5c(texture1d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint(1));
+  tint_symbol_1.write(int4(0), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<int, access::write> tint_symbol_2) {
   textureStore_d73b5c(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/dd7d81.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/dd7d81.wgsl.expected.msl
index 13e19b40a8..15ec0e76af 100644
--- a/test/tint/builtins/gen/textureStore/dd7d81.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/dd7d81.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_dd7d81(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_dd7d81(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/dde364.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/dde364.wgsl.expected.msl
index bf69fde29d..45be7606f0 100644
--- a/test/tint/builtins/gen/textureStore/dde364.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/dde364.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_dde364(texture2d_array<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint2(int2()), 1);
+  tint_symbol_1.write(uint4(0u), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<uint, access::write> tint_symbol_2) {
   textureStore_dde364(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/e885e8.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/e885e8.wgsl.expected.msl
index b69dd1b20f..3bea09b6ed 100644
--- a/test/tint/builtins/gen/textureStore/e885e8.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/e885e8.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_e885e8(texture1d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint(1));
+  tint_symbol_1.write(float4(0.0f), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<float, access::write> tint_symbol_2) {
   textureStore_e885e8(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/eb702f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/eb702f.wgsl.expected.msl
index 3265301a11..bac111e1e3 100644
--- a/test/tint/builtins/gen/textureStore/eb702f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/eb702f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_eb702f(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_eb702f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/eb78b9.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/eb78b9.wgsl.expected.msl
index f5956b7486..038f1f45e5 100644
--- a/test/tint/builtins/gen/textureStore/eb78b9.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/eb78b9.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_eb78b9(texture3d<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint3(int3()));
+  tint_symbol_1.write(int4(0), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<int, access::write> tint_symbol_2) {
   textureStore_eb78b9(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/ee6acc.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/ee6acc.wgsl.expected.msl
index e2577eabbe..46568a969f 100644
--- a/test/tint/builtins/gen/textureStore/ee6acc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/ee6acc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_ee6acc(texture3d<float, access::write> tint_symbol_1) {
-  tint_symbol_1.write(float4(), uint3(int3()));
+  tint_symbol_1.write(float4(0.0f), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<float, access::write> tint_symbol_2) {
   textureStore_ee6acc(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<float, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/ef9f2f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/ef9f2f.wgsl.expected.msl
index 28b42e68ea..a9ba91d14b 100644
--- a/test/tint/builtins/gen/textureStore/ef9f2f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/ef9f2f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_ef9f2f(texture3d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint3(int3()));
+  tint_symbol_1.write(uint4(0u), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureStore_ef9f2f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/f8dead.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/f8dead.wgsl.expected.msl
index 35885fa586..7e0be797cb 100644
--- a/test/tint/builtins/gen/textureStore/f8dead.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/f8dead.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_f8dead(texture3d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint3(int3()));
+  tint_symbol_1.write(uint4(0u), uint3(int3(0)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture3d<uint, access::write> tint_symbol_2) {
   textureStore_f8dead(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture3d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/f9be83.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/f9be83.wgsl.expected.msl
index 04178a6047..8eb8d23ef6 100644
--- a/test/tint/builtins/gen/textureStore/f9be83.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/f9be83.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_f9be83(texture2d_array<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()), 1);
+  tint_symbol_1.write(int4(0), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureStore_f9be83(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/fb9a8f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/fb9a8f.wgsl.expected.msl
index 0522eb949b..f2e593c171 100644
--- a/test/tint/builtins/gen/textureStore/fb9a8f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/fb9a8f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_fb9a8f(texture1d<uint, access::write> tint_symbol_1) {
-  tint_symbol_1.write(uint4(), uint(1));
+  tint_symbol_1.write(uint4(0u), uint(1));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture1d<uint, access::write> tint_symbol_2) {
   textureStore_fb9a8f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture1d<uint, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/textureStore/fbf53f.wgsl.expected.msl b/test/tint/builtins/gen/textureStore/fbf53f.wgsl.expected.msl
index 3b9a0e69d8..4d94d4fd30 100644
--- a/test/tint/builtins/gen/textureStore/fbf53f.wgsl.expected.msl
+++ b/test/tint/builtins/gen/textureStore/fbf53f.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureStore_fbf53f(texture2d_array<int, access::write> tint_symbol_1) {
-  tint_symbol_1.write(int4(), uint2(int2()), 1);
+  tint_symbol_1.write(int4(0), uint2(int2(0)), 1);
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner(texture2d_array<int, access::write> tint_symbol_2) {
   textureStore_fbf53f(tint_symbol_2);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main(texture2d_array<int, access::write> tint_symbol_3 [[texture(0)]]) {
diff --git a/test/tint/builtins/gen/transpose/2585cd.wgsl.expected.msl b/test/tint/builtins/gen/transpose/2585cd.wgsl.expected.msl
index bd0aea83d5..80f1d9a4ba 100644
--- a/test/tint/builtins/gen/transpose/2585cd.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/2585cd.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_2585cd() {
-  float3x4 res = transpose(float4x3());
+  float3x4 res = transpose(float4x3(float3(0.0f), float3(0.0f), float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_2585cd();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/31d679.wgsl.expected.msl b/test/tint/builtins/gen/transpose/31d679.wgsl.expected.msl
index 37161be200..0460811d83 100644
--- a/test/tint/builtins/gen/transpose/31d679.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/31d679.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_31d679() {
-  float2x2 res = transpose(float2x2());
+  float2x2 res = transpose(float2x2(float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_31d679();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/31e37e.wgsl.expected.msl b/test/tint/builtins/gen/transpose/31e37e.wgsl.expected.msl
index 393d1c2dd3..0d19966102 100644
--- a/test/tint/builtins/gen/transpose/31e37e.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/31e37e.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_31e37e() {
-  float2x4 res = transpose(float4x2());
+  float2x4 res = transpose(float4x2(float2(0.0f), float2(0.0f), float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_31e37e();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/4ce359.wgsl.expected.msl b/test/tint/builtins/gen/transpose/4ce359.wgsl.expected.msl
index 6f191fcac0..8dc8a5fad8 100644
--- a/test/tint/builtins/gen/transpose/4ce359.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/4ce359.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_4ce359() {
-  float4x2 res = transpose(float2x4());
+  float4x2 res = transpose(float2x4(float4(0.0f), float4(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_4ce359();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/4dc9a1.wgsl.expected.msl b/test/tint/builtins/gen/transpose/4dc9a1.wgsl.expected.msl
index 758e4046b4..e1829c85bf 100644
--- a/test/tint/builtins/gen/transpose/4dc9a1.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/4dc9a1.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_4dc9a1() {
-  float3x2 res = transpose(float2x3());
+  float3x2 res = transpose(float2x3(float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_4dc9a1();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/854336.wgsl.expected.msl b/test/tint/builtins/gen/transpose/854336.wgsl.expected.msl
index f541c74fc9..1b157b3ad8 100644
--- a/test/tint/builtins/gen/transpose/854336.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/854336.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_854336() {
-  float3x3 res = transpose(float3x3());
+  float3x3 res = transpose(float3x3(float3(0.0f), float3(0.0f), float3(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_854336();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/c1b600.wgsl.expected.msl b/test/tint/builtins/gen/transpose/c1b600.wgsl.expected.msl
index b1c7ea42d1..86ea249e54 100644
--- a/test/tint/builtins/gen/transpose/c1b600.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/c1b600.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_c1b600() {
-  float4x4 res = transpose(float4x4());
+  float4x4 res = transpose(float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_c1b600();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/d8f8ba.wgsl.expected.msl b/test/tint/builtins/gen/transpose/d8f8ba.wgsl.expected.msl
index c0fe7fe9f9..560f43efc5 100644
--- a/test/tint/builtins/gen/transpose/d8f8ba.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/d8f8ba.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_d8f8ba() {
-  float4x3 res = transpose(float3x4());
+  float4x3 res = transpose(float3x4(float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_d8f8ba();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/transpose/ed4bdc.wgsl.expected.msl b/test/tint/builtins/gen/transpose/ed4bdc.wgsl.expected.msl
index 3b4dfac436..f7d1ff3dde 100644
--- a/test/tint/builtins/gen/transpose/ed4bdc.wgsl.expected.msl
+++ b/test/tint/builtins/gen/transpose/ed4bdc.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void transpose_ed4bdc() {
-  float2x3 res = transpose(float3x2());
+  float2x3 res = transpose(float3x2(float2(0.0f), float2(0.0f), float2(0.0f)));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   transpose_ed4bdc();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/trunc/562d05.wgsl.expected.msl b/test/tint/builtins/gen/trunc/562d05.wgsl.expected.msl
index 491d58729a..175e9c19f3 100644
--- a/test/tint/builtins/gen/trunc/562d05.wgsl.expected.msl
+++ b/test/tint/builtins/gen/trunc/562d05.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void trunc_562d05() {
-  float3 res = trunc(float3());
+  float3 res = trunc(float3(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   trunc_562d05();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/trunc/e183aa.wgsl.expected.msl b/test/tint/builtins/gen/trunc/e183aa.wgsl.expected.msl
index 3e8d78d6f1..b2791de01e 100644
--- a/test/tint/builtins/gen/trunc/e183aa.wgsl.expected.msl
+++ b/test/tint/builtins/gen/trunc/e183aa.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void trunc_e183aa() {
-  float4 res = trunc(float4());
+  float4 res = trunc(float4(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   trunc_e183aa();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/trunc/eb83df.wgsl.expected.msl b/test/tint/builtins/gen/trunc/eb83df.wgsl.expected.msl
index 950182f686..3498d6e681 100644
--- a/test/tint/builtins/gen/trunc/eb83df.wgsl.expected.msl
+++ b/test/tint/builtins/gen/trunc/eb83df.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   trunc_eb83df();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/trunc/f370d3.wgsl.expected.msl b/test/tint/builtins/gen/trunc/f370d3.wgsl.expected.msl
index aa5a099944..a79f8f2f8e 100644
--- a/test/tint/builtins/gen/trunc/f370d3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/trunc/f370d3.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void trunc_f370d3() {
-  float2 res = trunc(float2());
+  float2 res = trunc(float2(0.0f));
 }
 
 struct tint_symbol {
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   trunc_f370d3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/unpack2x16float/32a5cf.wgsl.expected.msl b/test/tint/builtins/gen/unpack2x16float/32a5cf.wgsl.expected.msl
index ba41cd61d7..0a2dcfc9f7 100644
--- a/test/tint/builtins/gen/unpack2x16float/32a5cf.wgsl.expected.msl
+++ b/test/tint/builtins/gen/unpack2x16float/32a5cf.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   unpack2x16float_32a5cf();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/unpack2x16snorm/b4aea6.wgsl.expected.msl b/test/tint/builtins/gen/unpack2x16snorm/b4aea6.wgsl.expected.msl
index 03a4ab63d1..d9eb4d493f 100644
--- a/test/tint/builtins/gen/unpack2x16snorm/b4aea6.wgsl.expected.msl
+++ b/test/tint/builtins/gen/unpack2x16snorm/b4aea6.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   unpack2x16snorm_b4aea6();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/unpack2x16unorm/7699c0.wgsl.expected.msl b/test/tint/builtins/gen/unpack2x16unorm/7699c0.wgsl.expected.msl
index fda9e15242..352921c7ef 100644
--- a/test/tint/builtins/gen/unpack2x16unorm/7699c0.wgsl.expected.msl
+++ b/test/tint/builtins/gen/unpack2x16unorm/7699c0.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   unpack2x16unorm_7699c0();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/unpack4x8snorm/523fb3.wgsl.expected.msl b/test/tint/builtins/gen/unpack4x8snorm/523fb3.wgsl.expected.msl
index 9235de24ba..35b8035e07 100644
--- a/test/tint/builtins/gen/unpack4x8snorm/523fb3.wgsl.expected.msl
+++ b/test/tint/builtins/gen/unpack4x8snorm/523fb3.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   unpack4x8snorm_523fb3();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/gen/unpack4x8unorm/750c74.wgsl.expected.msl b/test/tint/builtins/gen/unpack4x8unorm/750c74.wgsl.expected.msl
index cc5cd0a170..0fccbcf433 100644
--- a/test/tint/builtins/gen/unpack4x8unorm/750c74.wgsl.expected.msl
+++ b/test/tint/builtins/gen/unpack4x8unorm/750c74.wgsl.expected.msl
@@ -11,7 +11,7 @@ struct tint_symbol {
 
 float4 vertex_main_inner() {
   unpack4x8unorm_750c74();
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol vertex_main() {
diff --git a/test/tint/builtins/insertBits/vec3/i32.spvasm.expected.msl b/test/tint/builtins/insertBits/vec3/i32.spvasm.expected.msl
index af5112b81f..f13a3b7b29 100644
--- a/test/tint/builtins/insertBits/vec3/i32.spvasm.expected.msl
+++ b/test/tint/builtins/insertBits/vec3/i32.spvasm.expected.msl
@@ -8,8 +8,8 @@ int3 tint_insert_bits(int3 v, int3 n, uint offset, uint count) {
 }
 
 void f_1() {
-  int3 v = int3();
-  int3 n = int3();
+  int3 v = int3(0);
+  int3 n = int3(0);
   uint offset_1 = 0u;
   uint count = 0u;
   int3 const x_18 = v;
diff --git a/test/tint/builtins/insertBits/vec3/u32.spvasm.expected.msl b/test/tint/builtins/insertBits/vec3/u32.spvasm.expected.msl
index 62eb987e7e..c85887169b 100644
--- a/test/tint/builtins/insertBits/vec3/u32.spvasm.expected.msl
+++ b/test/tint/builtins/insertBits/vec3/u32.spvasm.expected.msl
@@ -8,8 +8,8 @@ uint3 tint_insert_bits(uint3 v, uint3 n, uint offset, uint count) {
 }
 
 void f_1() {
-  uint3 v = uint3();
-  uint3 n = uint3();
+  uint3 v = uint3(0u);
+  uint3 n = uint3(0u);
   uint offset_1 = 0u;
   uint count = 0u;
   uint3 const x_17 = v;
diff --git a/test/tint/builtins/repeated_use.wgsl.expected.msl b/test/tint/builtins/repeated_use.wgsl.expected.msl
index cdf0372264..8be006ae95 100644
--- a/test/tint/builtins/repeated_use.wgsl.expected.msl
+++ b/test/tint/builtins/repeated_use.wgsl.expected.msl
@@ -19,13 +19,13 @@ float tint_degrees_3(float param_0) {
 }
 
 kernel void tint_symbol() {
-  tint_degrees(float4());
+  tint_degrees(float4(0.0f));
   tint_degrees(float4(1.0f));
   tint_degrees(float4(1.0f, 2.0f, 3.0f, 4.0f));
-  tint_degrees_1(float3());
+  tint_degrees_1(float3(0.0f));
   tint_degrees_1(float3(1.0f));
   tint_degrees_1(float3(1.0f, 2.0f, 3.0f));
-  tint_degrees_2(float2());
+  tint_degrees_2(float2(0.0f));
   tint_degrees_2(float2(1.0f));
   tint_degrees_2(float2(1.0f, 2.0f));
   tint_degrees_3(1.0f);
diff --git a/test/tint/builtins/textureDimensions/depth_ms.spvasm.expected.msl b/test/tint/builtins/textureDimensions/depth_ms.spvasm.expected.msl
index 670bd019f3..888f685a86 100644
--- a/test/tint/builtins/textureDimensions/depth_ms.spvasm.expected.msl
+++ b/test/tint/builtins/textureDimensions/depth_ms.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void textureDimensions_f60bdb(depth2d_ms<float, access::read> tint_symbol_5) {
-  int2 res = int2();
+  int2 res = int2(0);
   int2 const x_16 = int2(int2(tint_symbol_5.get_width(), tint_symbol_5.get_height()));
   res = x_16;
   return;
@@ -15,7 +15,7 @@ void tint_symbol_2(float4 tint_symbol, thread float4* const tint_symbol_6) {
 
 void vertex_main_1(depth2d_ms<float, access::read> tint_symbol_7, thread float4* const tint_symbol_8) {
   textureDimensions_f60bdb(tint_symbol_7);
-  tint_symbol_2(float4(), tint_symbol_8);
+  tint_symbol_2(float4(0.0f), tint_symbol_8);
   return;
 }
 
@@ -34,7 +34,7 @@ vertex_main_out vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_9,
 }
 
 vertex tint_symbol_3 vertex_main(depth2d_ms<float, access::read> tint_symbol_11 [[texture(0)]]) {
-  thread float4 tint_symbol_12 = float4();
+  thread float4 tint_symbol_12 = float4(0.0f);
   vertex_main_out const inner_result = vertex_main_inner(tint_symbol_11, &(tint_symbol_12));
   tint_symbol_3 wrapper_result = {};
   wrapper_result.tint_symbol_1_1 = inner_result.tint_symbol_1_1;
diff --git a/test/tint/builtins/textureGather/f32/alpha.wgsl.expected.msl b/test/tint/builtins/textureGather/f32/alpha.wgsl.expected.msl
index 1f71e85b58..f085127191 100644
--- a/test/tint/builtins/textureGather/f32/alpha.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/f32/alpha.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<float, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::w);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::w);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/f32/blue.wgsl.expected.msl b/test/tint/builtins/textureGather/f32/blue.wgsl.expected.msl
index 588e727b40..4aef266cbe 100644
--- a/test/tint/builtins/textureGather/f32/blue.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/f32/blue.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<float, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::z);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::z);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/f32/green.wgsl.expected.msl b/test/tint/builtins/textureGather/f32/green.wgsl.expected.msl
index c672905541..b3b3b4aa7f 100644
--- a/test/tint/builtins/textureGather/f32/green.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/f32/green.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<float, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/f32/red.wgsl.expected.msl b/test/tint/builtins/textureGather/f32/red.wgsl.expected.msl
index 78a9e9cebe..27d3c20c8a 100644
--- a/test/tint/builtins/textureGather/f32/red.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/f32/red.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<float, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::x);
+  float4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::x);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/i32/alpha.wgsl.expected.msl b/test/tint/builtins/textureGather/i32/alpha.wgsl.expected.msl
index 49861cfb9a..a52b2be425 100644
--- a/test/tint/builtins/textureGather/i32/alpha.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/i32/alpha.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<int, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::w);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::w);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/i32/blue.wgsl.expected.msl b/test/tint/builtins/textureGather/i32/blue.wgsl.expected.msl
index f00ee18957..2401cf94ab 100644
--- a/test/tint/builtins/textureGather/i32/blue.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/i32/blue.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<int, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::z);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::z);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/i32/green.wgsl.expected.msl b/test/tint/builtins/textureGather/i32/green.wgsl.expected.msl
index 277e4e15d7..f039daf4bf 100644
--- a/test/tint/builtins/textureGather/i32/green.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/i32/green.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<int, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/i32/red.wgsl.expected.msl b/test/tint/builtins/textureGather/i32/red.wgsl.expected.msl
index 1fe688c49a..da82fc4029 100644
--- a/test/tint/builtins/textureGather/i32/red.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/i32/red.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<int, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::x);
+  int4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::x);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/u32/alpha.wgsl.expected.msl b/test/tint/builtins/textureGather/u32/alpha.wgsl.expected.msl
index fc990a5f57..5afd9afed4 100644
--- a/test/tint/builtins/textureGather/u32/alpha.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/u32/alpha.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<uint, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::w);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::w);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/u32/blue.wgsl.expected.msl b/test/tint/builtins/textureGather/u32/blue.wgsl.expected.msl
index 55a95fc36d..b445375f93 100644
--- a/test/tint/builtins/textureGather/u32/blue.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/u32/blue.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<uint, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::z);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::z);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/u32/green.wgsl.expected.msl b/test/tint/builtins/textureGather/u32/green.wgsl.expected.msl
index 41be791153..1e36e58a77 100644
--- a/test/tint/builtins/textureGather/u32/green.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/u32/green.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<uint, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::y);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::y);
   return;
 }
 
diff --git a/test/tint/builtins/textureGather/u32/red.wgsl.expected.msl b/test/tint/builtins/textureGather/u32/red.wgsl.expected.msl
index b16b3679da..d71627df31 100644
--- a/test/tint/builtins/textureGather/u32/red.wgsl.expected.msl
+++ b/test/tint/builtins/textureGather/u32/red.wgsl.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 fragment void tint_symbol(texture2d<uint, access::sample> tint_symbol_1 [[texture(0)]], sampler tint_symbol_2 [[sampler(0)]]) {
-  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(), int2(0), component::x);
+  uint4 res = tint_symbol_1.gather(tint_symbol_2, float2(0.0f), int2(0), component::x);
   return;
 }
 
diff --git a/test/tint/builtins/textureLoad/depth_ms.spvasm.expected.msl b/test/tint/builtins/textureLoad/depth_ms.spvasm.expected.msl
index 072549da16..4fdc4b60b9 100644
--- a/test/tint/builtins/textureLoad/depth_ms.spvasm.expected.msl
+++ b/test/tint/builtins/textureLoad/depth_ms.spvasm.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void textureLoad_6273b1(depth2d_ms<float, access::read> tint_symbol_5) {
   float res = 0.0f;
-  float4 const x_17 = float4(tint_symbol_5.read(uint2(int2()), 1), 0.0f, 0.0f, 0.0f);
+  float4 const x_17 = float4(tint_symbol_5.read(uint2(int2(0)), 1), 0.0f, 0.0f, 0.0f);
   res = x_17[0];
   return;
 }
@@ -15,7 +15,7 @@ void tint_symbol_2(float4 tint_symbol, thread float4* const tint_symbol_6) {
 
 void vertex_main_1(depth2d_ms<float, access::read> tint_symbol_7, thread float4* const tint_symbol_8) {
   textureLoad_6273b1(tint_symbol_7);
-  tint_symbol_2(float4(), tint_symbol_8);
+  tint_symbol_2(float4(0.0f), tint_symbol_8);
   return;
 }
 
@@ -34,7 +34,7 @@ vertex_main_out vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_9,
 }
 
 vertex tint_symbol_3 vertex_main(depth2d_ms<float, access::read> tint_symbol_11 [[texture(0)]]) {
-  thread float4 tint_symbol_12 = float4();
+  thread float4 tint_symbol_12 = float4(0.0f);
   vertex_main_out const inner_result = vertex_main_inner(tint_symbol_11, &(tint_symbol_12));
   tint_symbol_3 wrapper_result = {};
   wrapper_result.tint_symbol_1_1 = inner_result.tint_symbol_1_1;
diff --git a/test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.msl b/test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.msl
index c1e9dd6cc1..60899933fa 100644
--- a/test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.msl
+++ b/test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.msl
@@ -46,7 +46,7 @@ float4 textureLoad2d(texture2d<float, access::sample> tint_symbol, texture2d<flo
 }
 
 void doTextureLoad(texture2d<float, access::sample> tint_symbol_2, texture2d<float, access::sample> tint_symbol_3, const constant ExternalTextureParams* const tint_symbol_4) {
-  float4 res = textureLoad2d(tint_symbol_2, tint_symbol_3, *(tint_symbol_4), int2());
+  float4 res = textureLoad2d(tint_symbol_2, tint_symbol_3, *(tint_symbol_4), int2(0));
 }
 
 struct tint_symbol_1 {
@@ -55,7 +55,7 @@ struct tint_symbol_1 {
 
 float4 vertex_main_inner(texture2d<float, access::sample> tint_symbol_5, texture2d<float, access::sample> tint_symbol_6, const constant ExternalTextureParams* const tint_symbol_7) {
   doTextureLoad(tint_symbol_5, tint_symbol_6, tint_symbol_7);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 vertex_main(texture2d<float, access::sample> tint_symbol_8 [[texture(0)]], texture2d<float, access::sample> tint_symbol_9 [[texture(1)]], const constant ExternalTextureParams* tint_symbol_10 [[buffer(2)]]) {
diff --git a/test/tint/builtins/textureLoad/texture_param.wgsl.expected.msl b/test/tint/builtins/textureLoad/texture_param.wgsl.expected.msl
index cee9f8ef51..eda6fa124d 100644
--- a/test/tint/builtins/textureLoad/texture_param.wgsl.expected.msl
+++ b/test/tint/builtins/textureLoad/texture_param.wgsl.expected.msl
@@ -6,7 +6,7 @@ int4 textureLoad2d(texture2d<int, access::sample> tint_symbol, int2 coords, int
 }
 
 void doTextureLoad(texture2d<int, access::sample> tint_symbol_2) {
-  int4 res = textureLoad2d(tint_symbol_2, int2(), 0);
+  int4 res = textureLoad2d(tint_symbol_2, int2(0), 0);
 }
 
 struct tint_symbol_1 {
@@ -15,7 +15,7 @@ struct tint_symbol_1 {
 
 float4 vertex_main_inner(texture2d<int, access::sample> tint_symbol_3) {
   doTextureLoad(tint_symbol_3);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 vertex_main(texture2d<int, access::sample> tint_symbol_4 [[texture(0)]]) {
diff --git a/test/tint/builtins/textureNumSamples/depth_ms.spvasm.expected.msl b/test/tint/builtins/textureNumSamples/depth_ms.spvasm.expected.msl
index 8a92713589..cd3bb3bdf5 100644
--- a/test/tint/builtins/textureNumSamples/depth_ms.spvasm.expected.msl
+++ b/test/tint/builtins/textureNumSamples/depth_ms.spvasm.expected.msl
@@ -15,7 +15,7 @@ void tint_symbol_2(float4 tint_symbol, thread float4* const tint_symbol_6) {
 
 void vertex_main_1(depth2d_ms<float, access::read> tint_symbol_7, thread float4* const tint_symbol_8) {
   textureNumSamples_a3c8a0(tint_symbol_7);
-  tint_symbol_2(float4(), tint_symbol_8);
+  tint_symbol_2(float4(0.0f), tint_symbol_8);
   return;
 }
 
@@ -34,7 +34,7 @@ vertex_main_out vertex_main_inner(depth2d_ms<float, access::read> tint_symbol_9,
 }
 
 vertex tint_symbol_3 vertex_main(depth2d_ms<float, access::read> tint_symbol_11 [[texture(0)]]) {
-  thread float4 tint_symbol_12 = float4();
+  thread float4 tint_symbol_12 = float4(0.0f);
   vertex_main_out const inner_result = vertex_main_inner(tint_symbol_11, &(tint_symbol_12));
   tint_symbol_3 wrapper_result = {};
   wrapper_result.tint_symbol_1_1 = inner_result.tint_symbol_1_1;
diff --git a/test/tint/expressions/binary/add/mat3x3-mat3x3/f32.wgsl.expected.msl b/test/tint/expressions/binary/add/mat3x3-mat3x3/f32.wgsl.expected.msl
index 4c6ced5b3a..ff6e1c7b17 100644
--- a/test/tint/expressions/binary/add/mat3x3-mat3x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/mat3x3-mat3x3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3x3 const a = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   float3x3 const b = float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f));
-  float3x3 const r = (a + b);
+  float3x3 const r = (float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f)) + float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-scalar/f32.wgsl.expected.msl
index bcb61ac582..18b64e6d3f 100644
--- a/test/tint/expressions/binary/add/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 2.0f;
-  float const r = (a + b);
+  float const r = (1.0f + 2.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-scalar/i32.wgsl.expected.msl
index e77d38fefe..470e036a02 100644
--- a/test/tint/expressions/binary/add/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = as_type<int>((as_type<uint>(a) + as_type<uint>(b)));
+  int const r = as_type<int>((as_type<uint>(1) + as_type<uint>(2)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-scalar/u32.wgsl.expected.msl
index ca9e441efe..6ffd8433d3 100644
--- a/test/tint/expressions/binary/add/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a + b);
+  uint const r = (1u + 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-vec3/f32.wgsl.expected.msl
index aad4aba014..3ac98f92bf 100644
--- a/test/tint/expressions/binary/add/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(1.0f, 2.0f, 3.0f);
-  float3 const r = (a + b);
+  float3 const r = (4.0f + float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-vec3/i32.wgsl.expected.msl
index 46f1909da0..d9db51ed9c 100644
--- a/test/tint/expressions/binary/add/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(1, 2, 3);
-  int3 const r = as_type<int3>((as_type<uint>(a) + as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint>(4) + as_type<uint3>(int3(1, 2, 3))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/add/scalar-vec3/u32.wgsl.expected.msl
index 71345d51f3..c402d866f3 100644
--- a/test/tint/expressions/binary/add/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(1u, 2u, 3u);
-  uint3 const r = (a + b);
+  uint3 const r = (4u + uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-scalar/f32.wgsl.expected.msl
index e1560631f9..aeaadc882d 100644
--- a/test/tint/expressions/binary/add/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 4.0f;
-  float3 const r = (a + b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) + 4.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-scalar/i32.wgsl.expected.msl
index 89306cc895..b747cf5972 100644
--- a/test/tint/expressions/binary/add/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 4;
-  int3 const r = as_type<int3>((as_type<uint3>(a) + as_type<uint>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) + as_type<uint>(4)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-scalar/u32.wgsl.expected.msl
index 830bcddbbe..55c174f353 100644
--- a/test/tint/expressions/binary/add/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 4u;
-  uint3 const r = (a + b);
+  uint3 const r = (uint3(1u, 2u, 3u) + 4u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-vec3/f32.wgsl.expected.msl
index 011652a019..2048839745 100644
--- a/test/tint/expressions/binary/add/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(4.0f, 5.0f, 6.0f);
-  float3 const r = (a + b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) + float3(4.0f, 5.0f, 6.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-vec3/i32.wgsl.expected.msl
index 54d88c782f..528b091ceb 100644
--- a/test/tint/expressions/binary/add/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = as_type<int3>((as_type<uint3>(a) + as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) + as_type<uint3>(int3(4, 5, 6))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/add/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/add/vec3-vec3/u32.wgsl.expected.msl
index 5299d8a795..bd0cb07f14 100644
--- a/test/tint/expressions/binary/add/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/add/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a + b);
+  uint3 const r = (uint3(1u, 2u, 3u) + uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/scalar-scalar/bool.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/scalar-scalar/bool.wgsl.expected.msl
index 48bc530e57..8fa2a8df0a 100644
--- a/test/tint/expressions/binary/bit-and/scalar-scalar/bool.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/scalar-scalar/bool.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   bool const a = true;
   bool const b = false;
-  bool const r = bool(a & b);
+  bool const r = bool(true & false);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/scalar-scalar/i32.wgsl.expected.msl
index bb30c81312..2b266badc0 100644
--- a/test/tint/expressions/binary/bit-and/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = (a & b);
+  int const r = (1 & 2);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/scalar-scalar/u32.wgsl.expected.msl
index b3ca220c3a..1b8256452e 100644
--- a/test/tint/expressions/binary/bit-and/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a & b);
+  uint const r = (1u & 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/vec3-vec3/bool.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/vec3-vec3/bool.wgsl.expected.msl
index f8eed1d343..c5bc9d6875 100644
--- a/test/tint/expressions/binary/bit-and/vec3-vec3/bool.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/vec3-vec3/bool.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   bool3 const a = bool3(true, true, false);
   bool3 const b = bool3(true, false, true);
-  bool3 const r = (a & b);
+  bool3 const r = (bool3(true, true, false) & bool3(true, false, true));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/vec3-vec3/i32.wgsl.expected.msl
index 22dbd4974b..70394ce8a5 100644
--- a/test/tint/expressions/binary/bit-and/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = (a & b);
+  int3 const r = (int3(1, 2, 3) & int3(4, 5, 6));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-and/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-and/vec3-vec3/u32.wgsl.expected.msl
index f0aefd1781..db3f35c1cd 100644
--- a/test/tint/expressions/binary/bit-and/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-and/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a & b);
+  uint3 const r = (uint3(1u, 2u, 3u) & uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-or/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-or/scalar-scalar/i32.wgsl.expected.msl
index b3bbf94ba9..8045ee2d09 100644
--- a/test/tint/expressions/binary/bit-or/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-or/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = (a | b);
+  int const r = (1 | 2);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-or/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-or/scalar-scalar/u32.wgsl.expected.msl
index ca1851493c..fc0ff27260 100644
--- a/test/tint/expressions/binary/bit-or/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-or/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a | b);
+  uint const r = (1u | 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-or/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-or/vec3-vec3/i32.wgsl.expected.msl
index 5096a8c7f9..372dd5eed9 100644
--- a/test/tint/expressions/binary/bit-or/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-or/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = (a | b);
+  int3 const r = (int3(1, 2, 3) | int3(4, 5, 6));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-or/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-or/vec3-vec3/u32.wgsl.expected.msl
index f2f90d0c3f..dc5593b7a8 100644
--- a/test/tint/expressions/binary/bit-or/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-or/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a | b);
+  uint3 const r = (uint3(1u, 2u, 3u) | uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-xor/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-xor/scalar-scalar/i32.wgsl.expected.msl
index 62360a8c33..1907ac1fe9 100644
--- a/test/tint/expressions/binary/bit-xor/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-xor/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = (a ^ b);
+  int const r = (1 ^ 2);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-xor/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-xor/scalar-scalar/u32.wgsl.expected.msl
index 8093c0c109..109dbdd532 100644
--- a/test/tint/expressions/binary/bit-xor/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-xor/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a ^ b);
+  uint const r = (1u ^ 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-xor/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/bit-xor/vec3-vec3/i32.wgsl.expected.msl
index 82c280be27..709f2094d1 100644
--- a/test/tint/expressions/binary/bit-xor/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-xor/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = (a ^ b);
+  int3 const r = (int3(1, 2, 3) ^ int3(4, 5, 6));
   return;
 }
 
diff --git a/test/tint/expressions/binary/bit-xor/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/bit-xor/vec3-vec3/u32.wgsl.expected.msl
index d77b0b5530..13bf9bb4c2 100644
--- a/test/tint/expressions/binary/bit-xor/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/bit-xor/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a ^ b);
+  uint3 const r = (uint3(1u, 2u, 3u) ^ uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-scalar/f32.wgsl.expected.msl
index 5268a5ed8f..eac6559c54 100644
--- a/test/tint/expressions/binary/div/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 2.0f;
-  float const r = (a / b);
+  float const r = (1.0f / 2.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-scalar/i32.wgsl.expected.msl
index 17d17098e5..baa894f541 100644
--- a/test/tint/expressions/binary/div/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = (a / b);
+  int const r = (1 / 2);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-scalar/u32.wgsl.expected.msl
index fa9d9e76e7..729468b139 100644
--- a/test/tint/expressions/binary/div/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a / b);
+  uint const r = (1u / 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-vec3/f32.wgsl.expected.msl
index 1fed91b70b..17e61b0862 100644
--- a/test/tint/expressions/binary/div/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(1.0f, 2.0f, 3.0f);
-  float3 const r = (a / b);
+  float3 const r = (4.0f / float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-vec3/i32.wgsl.expected.msl
index 41242231ca..06f9014b52 100644
--- a/test/tint/expressions/binary/div/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(1, 2, 3);
-  int3 const r = (a / b);
+  int3 const r = (4 / int3(1, 2, 3));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/div/scalar-vec3/u32.wgsl.expected.msl
index aa59c35cfc..766be09f43 100644
--- a/test/tint/expressions/binary/div/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(1u, 2u, 3u);
-  uint3 const r = (a / b);
+  uint3 const r = (4u / uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-scalar/f32.wgsl.expected.msl
index 8c1ca1626a..9561edcd30 100644
--- a/test/tint/expressions/binary/div/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 4.0f;
-  float3 const r = (a / b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) / 4.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-scalar/i32.wgsl.expected.msl
index 73678c8c36..ab13b2bb16 100644
--- a/test/tint/expressions/binary/div/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 4;
-  int3 const r = (a / b);
+  int3 const r = (int3(1, 2, 3) / 4);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-scalar/u32.wgsl.expected.msl
index 749829bbc0..0c3c20e0e7 100644
--- a/test/tint/expressions/binary/div/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 4u;
-  uint3 const r = (a / b);
+  uint3 const r = (uint3(1u, 2u, 3u) / 4u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-vec3/f32.wgsl.expected.msl
index a2c6698a94..e17caddc37 100644
--- a/test/tint/expressions/binary/div/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(4.0f, 5.0f, 6.0f);
-  float3 const r = (a / b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) / float3(4.0f, 5.0f, 6.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-vec3/i32.wgsl.expected.msl
index bb0f942bf9..811a941b8c 100644
--- a/test/tint/expressions/binary/div/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = (a / b);
+  int3 const r = (int3(1, 2, 3) / int3(4, 5, 6));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/div/vec3-vec3/u32.wgsl.expected.msl
index bfddf5a686..737182baac 100644
--- a/test/tint/expressions/binary/div/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a / b);
+  uint3 const r = (uint3(1u, 2u, 3u) / uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
index b0953f8d8a..2677a3f151 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 0.0f;
-  float const r = (a / b);
+  float const r = (1.0f / 0.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
index 0923684eb6..c3a4d3d9b0 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 0;
-  int const r = (a / b);
+  int const r = (1 / 0);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
index 2c1b78a3b3..f1389ec420 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 0u;
-  uint const r = (a / b);
+  uint const r = (1u / 0u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/f32.wgsl.expected.msl
index e251ea7909..9414c5d198 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(0.0f, 2.0f, 0.0f);
-  float3 const r = (a / b);
+  float3 const r = (4.0f / float3(0.0f, 2.0f, 0.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
index 89df256097..9628eae80a 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(0, 2, 0);
-  int3 const r = (a / b);
+  int3 const r = (4 / int3(0, 2, 0));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
index eb1c975c99..f2eff5c67b 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(0u, 2u, 0u);
-  uint3 const r = (a / b);
+  uint3 const r = (4u / uint3(0u, 2u, 0u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/f32.wgsl.expected.msl
index 91df91ec9f..4d754def8a 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 0.0f;
-  float3 const r = (a / b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) / 0.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
index c187dd2cf6..f0343d0d6f 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 0;
-  int3 const r = (a / b);
+  int3 const r = (int3(1, 2, 3) / 0);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
index 2d342e7ecb..c41c66e950 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 0u;
-  uint3 const r = (a / b);
+  uint3 const r = (uint3(1u, 2u, 3u) / 0u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
index a4765b3da6..d4fb358183 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(0.0f, 5.0f, 0.0f);
-  float3 const r = (a / b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) / float3(0.0f, 5.0f, 0.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
index 7cf268154e..f3fa90e97f 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(0, 5, 0);
-  int3 const r = (a / b);
+  int3 const r = (int3(1, 2, 3) / int3(0, 5, 0));
   return;
 }
 
diff --git a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
index 66ee158e1b..f65cf552d5 100644
--- a/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/div_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(0u, 5u, 0u);
-  uint3 const r = (a / b);
+  uint3 const r = (uint3(1u, 2u, 3u) / uint3(0u, 5u, 0u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/left-shift/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/left-shift/scalar-scalar/i32.wgsl.expected.msl
index 3c5ec179ee..760ab605a9 100644
--- a/test/tint/expressions/binary/left-shift/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/left-shift/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   uint const b = 2u;
-  int const r = as_type<int>((as_type<uint>(a) << b));
+  int const r = as_type<int>((as_type<uint>(1) << 2u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/left-shift/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/left-shift/scalar-scalar/u32.wgsl.expected.msl
index 90ec5fb2ae..4da8214840 100644
--- a/test/tint/expressions/binary/left-shift/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/left-shift/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a << b);
+  uint const r = (1u << 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/left-shift/vector-vector/i32.wgsl.expected.msl b/test/tint/expressions/binary/left-shift/vector-vector/i32.wgsl.expected.msl
index f97db25d1b..6ed6ad0346 100644
--- a/test/tint/expressions/binary/left-shift/vector-vector/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/left-shift/vector-vector/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   uint3 const b = uint3(4u, 5u, 6u);
-  int3 const r = as_type<int3>((as_type<uint3>(a) << b));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) << uint3(4u, 5u, 6u)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/left-shift/vector-vector/u32.wgsl.expected.msl b/test/tint/expressions/binary/left-shift/vector-vector/u32.wgsl.expected.msl
index c80e57e6a8..58bf1463e2 100644
--- a/test/tint/expressions/binary/left-shift/vector-vector/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/left-shift/vector-vector/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a << b);
+  uint3 const r = (uint3(1u, 2u, 3u) << uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-scalar/f32.wgsl.expected.msl
index a64e982cb1..1039669d09 100644
--- a/test/tint/expressions/binary/mod/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 2.0f;
-  float const r = fmod(a, b);
+  float const r = fmod(1.0f, 2.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-scalar/i32.wgsl.expected.msl
index a67d6fed75..558076bbc6 100644
--- a/test/tint/expressions/binary/mod/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = (a % b);
+  int const r = (1 % 2);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-scalar/u32.wgsl.expected.msl
index 5d4b949e72..2d0ed2d277 100644
--- a/test/tint/expressions/binary/mod/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a % b);
+  uint const r = (1u % 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-vec3/f32.wgsl.expected.msl
index bbcdd8e72b..af65ce9134 100644
--- a/test/tint/expressions/binary/mod/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(1.0f, 2.0f, 3.0f);
-  float3 const r = fmod(a, b);
+  float3 const r = fmod(4.0f, float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-vec3/i32.wgsl.expected.msl
index 533d47785e..7b419c6c96 100644
--- a/test/tint/expressions/binary/mod/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(1, 2, 3);
-  int3 const r = (a % b);
+  int3 const r = (4 % int3(1, 2, 3));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod/scalar-vec3/u32.wgsl.expected.msl
index a5e85ceaac..7bbe93566e 100644
--- a/test/tint/expressions/binary/mod/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(1u, 2u, 3u);
-  uint3 const r = (a % b);
+  uint3 const r = (4u % uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-scalar/f32.wgsl.expected.msl
index ab3f908f1d..0728300a11 100644
--- a/test/tint/expressions/binary/mod/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 4.0f;
-  float3 const r = fmod(a, b);
+  float3 const r = fmod(float3(1.0f, 2.0f, 3.0f), 4.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-scalar/i32.wgsl.expected.msl
index 8df9cbeada..665f197698 100644
--- a/test/tint/expressions/binary/mod/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 4;
-  int3 const r = (a % b);
+  int3 const r = (int3(1, 2, 3) % 4);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-scalar/u32.wgsl.expected.msl
index 3adb345851..80f68bd736 100644
--- a/test/tint/expressions/binary/mod/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 4u;
-  uint3 const r = (a % b);
+  uint3 const r = (uint3(1u, 2u, 3u) % 4u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-vec3/f32.wgsl.expected.msl
index bfb6b5f45b..734da956e7 100644
--- a/test/tint/expressions/binary/mod/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(4.0f, 5.0f, 6.0f);
-  float3 const r = fmod(a, b);
+  float3 const r = fmod(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-vec3/i32.wgsl.expected.msl
index 2bd4b5f005..fcacba7125 100644
--- a/test/tint/expressions/binary/mod/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = (a % b);
+  int3 const r = (int3(1, 2, 3) % int3(4, 5, 6));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod/vec3-vec3/u32.wgsl.expected.msl
index 954924cc5c..0797cc3e13 100644
--- a/test/tint/expressions/binary/mod/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a % b);
+  uint3 const r = (uint3(1u, 2u, 3u) % uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
index 25c2f18e89..8956a95316 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 0.0f;
-  float const r = fmod(a, b);
+  float const r = fmod(1.0f, 0.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
index 98f1698b74..8beab32bba 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 0;
-  int const r = (a % b);
+  int const r = (1 % 0);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
index 456e3b9caa..fae14001f6 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 0u;
-  uint const r = (a % b);
+  uint const r = (1u % 0u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
index 95a93f72b8..21e28ab803 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(0, 2, 0);
-  int3 const r = (a % b);
+  int3 const r = (4 % int3(0, 2, 0));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
index 16fa02517d..41099ba6f4 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(0u, 2u, 0u);
-  uint3 const r = (a % b);
+  uint3 const r = (4u % uint3(0u, 2u, 0u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
index cbac4c79f6..6ea6d3609f 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 0;
-  int3 const r = (a % b);
+  int3 const r = (int3(1, 2, 3) % 0);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
index 78398ec53e..0f226fa9ce 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 0u;
-  uint3 const r = (a % b);
+  uint3 const r = (uint3(1u, 2u, 3u) % 0u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
index 9506b9c7b2..b23d70edaa 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(0.0f, 5.0f, 0.0f);
-  float3 const r = fmod(a, b);
+  float3 const r = fmod(float3(1.0f, 2.0f, 3.0f), float3(0.0f, 5.0f, 0.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
index 7619c9c3eb..27fcbd8856 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(0, 5, 0);
-  int3 const r = (a % b);
+  int3 const r = (int3(1, 2, 3) % int3(0, 5, 0));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
index 028424af19..c86bd045da 100644
--- a/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mod_by_zero/by_constant/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(0u, 5u, 0u);
-  uint3 const r = (a % b);
+  uint3 const r = (uint3(1u, 2u, 3u) % uint3(0u, 5u, 0u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/mat2x4-mat4x2/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/mat2x4-mat4x2/f32.wgsl.expected.msl
index b706400e99..4dd7fbcd4e 100644
--- a/test/tint/expressions/binary/mul/mat2x4-mat4x2/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/mat2x4-mat4x2/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float2x4 const a = float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f));
   float4x2 const b = float4x2(float2(-1.0f, -2.0f), float2(-3.0f, -4.0f), float2(-5.0f, -6.0f), float2(-7.0f, -8.0f));
-  float4x4 const r = (a * b);
+  float4x4 const r = (float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f)) * float4x2(float2(-1.0f, -2.0f), float2(-3.0f, -4.0f), float2(-5.0f, -6.0f), float2(-7.0f, -8.0f)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/mat3x3-mat3x3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/mat3x3-mat3x3/f32.wgsl.expected.msl
index d51ecb1b33..951ba94e01 100644
--- a/test/tint/expressions/binary/mul/mat3x3-mat3x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/mat3x3-mat3x3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3x3 const a = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   float3x3 const b = float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f));
-  float3x3 const r = (a * b);
+  float3x3 const r = (float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f)) * float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/mat4x2-mat2x4/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/mat4x2-mat2x4/f32.wgsl.expected.msl
index 7b95ad6f5e..df9f1ce16c 100644
--- a/test/tint/expressions/binary/mul/mat4x2-mat2x4/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/mat4x2-mat2x4/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float4x2 const a = float4x2(float2(-1.0f, -2.0f), float2(-3.0f, -4.0f), float2(-5.0f, -6.0f), float2(-7.0f, -8.0f));
   float2x4 const b = float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f));
-  float2x2 const r = (a * b);
+  float2x2 const r = (float4x2(float2(-1.0f, -2.0f), float2(-3.0f, -4.0f), float2(-5.0f, -6.0f), float2(-7.0f, -8.0f)) * float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-scalar/f32.wgsl.expected.msl
index daaade6f1d..d0f002110c 100644
--- a/test/tint/expressions/binary/mul/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 2.0f;
-  float const r = (a * b);
+  float const r = (1.0f * 2.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-scalar/i32.wgsl.expected.msl
index 7a20eacd7c..eaa1bf242b 100644
--- a/test/tint/expressions/binary/mul/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = as_type<int>((as_type<uint>(a) * as_type<uint>(b)));
+  int const r = as_type<int>((as_type<uint>(1) * as_type<uint>(2)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-scalar/u32.wgsl.expected.msl
index 7e9738a600..765a95bf72 100644
--- a/test/tint/expressions/binary/mul/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a * b);
+  uint const r = (1u * 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-vec3/f32.wgsl.expected.msl
index 5ea434011b..53077f313a 100644
--- a/test/tint/expressions/binary/mul/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(1.0f, 2.0f, 3.0f);
-  float3 const r = (a * b);
+  float3 const r = (4.0f * float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-vec3/i32.wgsl.expected.msl
index 216de39caa..3493e3907b 100644
--- a/test/tint/expressions/binary/mul/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(1, 2, 3);
-  int3 const r = as_type<int3>((as_type<uint>(a) * as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint>(4) * as_type<uint3>(int3(1, 2, 3))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mul/scalar-vec3/u32.wgsl.expected.msl
index 6ff7ae2238..c11481ff6e 100644
--- a/test/tint/expressions/binary/mul/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(1u, 2u, 3u);
-  uint3 const r = (a * b);
+  uint3 const r = (4u * uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-scalar/f32.wgsl.expected.msl
index 2779faf0c6..482b041002 100644
--- a/test/tint/expressions/binary/mul/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 4.0f;
-  float3 const r = (a * b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) * 4.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-scalar/i32.wgsl.expected.msl
index f320bd7520..06ce9ecf94 100644
--- a/test/tint/expressions/binary/mul/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 4;
-  int3 const r = as_type<int3>((as_type<uint3>(a) * as_type<uint>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) * as_type<uint>(4)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-scalar/u32.wgsl.expected.msl
index b0b38b02ef..02b5bed7ca 100644
--- a/test/tint/expressions/binary/mul/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 4u;
-  uint3 const r = (a * b);
+  uint3 const r = (uint3(1u, 2u, 3u) * 4u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-vec3/f32.wgsl.expected.msl
index 2c70f56ab7..6c471be932 100644
--- a/test/tint/expressions/binary/mul/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(4.0f, 5.0f, 6.0f);
-  float3 const r = (a * b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) * float3(4.0f, 5.0f, 6.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-vec3/i32.wgsl.expected.msl
index f4511b2010..21e97d9c27 100644
--- a/test/tint/expressions/binary/mul/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = as_type<int3>((as_type<uint3>(a) * as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) * as_type<uint3>(int3(4, 5, 6))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/mul/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/mul/vec3-vec3/u32.wgsl.expected.msl
index 3bdad2db92..15d1a52332 100644
--- a/test/tint/expressions/binary/mul/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/mul/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a * b);
+  uint3 const r = (uint3(1u, 2u, 3u) * uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/right-shift/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/right-shift/scalar-scalar/i32.wgsl.expected.msl
index 9d9f74941d..a1760a1a5c 100644
--- a/test/tint/expressions/binary/right-shift/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/right-shift/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   uint const b = 2u;
-  int const r = (a >> b);
+  int const r = (1 >> 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/right-shift/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/right-shift/scalar-scalar/u32.wgsl.expected.msl
index 68036b5ce6..eebabe3f07 100644
--- a/test/tint/expressions/binary/right-shift/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/right-shift/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a >> b);
+  uint const r = (1u >> 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/right-shift/vector-vector/i32.wgsl.expected.msl b/test/tint/expressions/binary/right-shift/vector-vector/i32.wgsl.expected.msl
index 5c3fd63d2d..214c5d1286 100644
--- a/test/tint/expressions/binary/right-shift/vector-vector/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/right-shift/vector-vector/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   uint3 const b = uint3(4u, 5u, 6u);
-  int3 const r = (a >> b);
+  int3 const r = (int3(1, 2, 3) >> uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/right-shift/vector-vector/u32.wgsl.expected.msl b/test/tint/expressions/binary/right-shift/vector-vector/u32.wgsl.expected.msl
index b5aa9e9f95..bd22b17b64 100644
--- a/test/tint/expressions/binary/right-shift/vector-vector/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/right-shift/vector-vector/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a >> b);
+  uint3 const r = (uint3(1u, 2u, 3u) >> uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/mat3x3-mat3x3/f32.wgsl.expected.msl b/test/tint/expressions/binary/sub/mat3x3-mat3x3/f32.wgsl.expected.msl
index bcf7b167e9..96937e7acb 100644
--- a/test/tint/expressions/binary/sub/mat3x3-mat3x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/mat3x3-mat3x3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3x3 const a = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   float3x3 const b = float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f));
-  float3x3 const r = (a - b);
+  float3x3 const r = (float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f)) - float3x3(float3(-1.0f, -2.0f, -3.0f), float3(-4.0f, -5.0f, -6.0f), float3(-7.0f, -8.0f, -9.0f)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-scalar/f32.wgsl.expected.msl
index ae19d6c8a1..c3df54d6d1 100644
--- a/test/tint/expressions/binary/sub/scalar-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 1.0f;
   float const b = 2.0f;
-  float const r = (a - b);
+  float const r = (1.0f - 2.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-scalar/i32.wgsl.expected.msl
index 4c25a09764..f36ba7e93c 100644
--- a/test/tint/expressions/binary/sub/scalar-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 1;
   int const b = 2;
-  int const r = as_type<int>((as_type<uint>(a) - as_type<uint>(b)));
+  int const r = as_type<int>((as_type<uint>(1) - as_type<uint>(2)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-scalar/u32.wgsl.expected.msl
index d93a0c77be..1855bab98c 100644
--- a/test/tint/expressions/binary/sub/scalar-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 1u;
   uint const b = 2u;
-  uint const r = (a - b);
+  uint const r = (1u - 2u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-vec3/f32.wgsl.expected.msl
index ce03e023d8..bd32879c5c 100644
--- a/test/tint/expressions/binary/sub/scalar-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float const a = 4.0f;
   float3 const b = float3(1.0f, 2.0f, 3.0f);
-  float3 const r = (a - b);
+  float3 const r = (4.0f - float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-vec3/i32.wgsl.expected.msl
index 8837be0e92..4d922a9ba2 100644
--- a/test/tint/expressions/binary/sub/scalar-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int const a = 4;
   int3 const b = int3(1, 2, 3);
-  int3 const r = as_type<int3>((as_type<uint>(a) - as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint>(4) - as_type<uint3>(int3(1, 2, 3))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/scalar-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/sub/scalar-vec3/u32.wgsl.expected.msl
index ec8b6cfec2..ae3bf8f659 100644
--- a/test/tint/expressions/binary/sub/scalar-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/scalar-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint const a = 4u;
   uint3 const b = uint3(1u, 2u, 3u);
-  uint3 const r = (a - b);
+  uint3 const r = (4u - uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-scalar/f32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-scalar/f32.wgsl.expected.msl
index 7799789514..1862e3e757 100644
--- a/test/tint/expressions/binary/sub/vec3-scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-scalar/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float const b = 4.0f;
-  float3 const r = (a - b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) - 4.0f);
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-scalar/i32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-scalar/i32.wgsl.expected.msl
index 6149a0c537..c8889bbc12 100644
--- a/test/tint/expressions/binary/sub/vec3-scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-scalar/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int const b = 4;
-  int3 const r = as_type<int3>((as_type<uint3>(a) - as_type<uint>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) - as_type<uint>(4)));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-scalar/u32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-scalar/u32.wgsl.expected.msl
index 7f76d5a54b..dce5245d61 100644
--- a/test/tint/expressions/binary/sub/vec3-scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-scalar/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint const b = 4u;
-  uint3 const r = (a - b);
+  uint3 const r = (uint3(1u, 2u, 3u) - 4u);
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-vec3/f32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-vec3/f32.wgsl.expected.msl
index 5ce4e15adc..eff4983b67 100644
--- a/test/tint/expressions/binary/sub/vec3-vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-vec3/f32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
   float3 const b = float3(4.0f, 5.0f, 6.0f);
-  float3 const r = (a - b);
+  float3 const r = (float3(1.0f, 2.0f, 3.0f) - float3(4.0f, 5.0f, 6.0f));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-vec3/i32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-vec3/i32.wgsl.expected.msl
index 142bb72d1a..9718f58e33 100644
--- a/test/tint/expressions/binary/sub/vec3-vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-vec3/i32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
   int3 const b = int3(4, 5, 6);
-  int3 const r = as_type<int3>((as_type<uint3>(a) - as_type<uint3>(b)));
+  int3 const r = as_type<int3>((as_type<uint3>(int3(1, 2, 3)) - as_type<uint3>(int3(4, 5, 6))));
   return;
 }
 
diff --git a/test/tint/expressions/binary/sub/vec3-vec3/u32.wgsl.expected.msl b/test/tint/expressions/binary/sub/vec3-vec3/u32.wgsl.expected.msl
index 0f6cc4b64e..bf347cec5b 100644
--- a/test/tint/expressions/binary/sub/vec3-vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/binary/sub/vec3-vec3/u32.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
   uint3 const b = uint3(4u, 5u, 6u);
-  uint3 const r = (a - b);
+  uint3 const r = (uint3(1u, 2u, 3u) - uint3(4u, 5u, 6u));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/f32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/f32-f32.wgsl.expected.msl
index ea55957e97..0acca82626 100644
--- a/test/tint/expressions/bitcast/scalar/f32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/f32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float const a = 1.0f;
-  float const b = as_type<float>(a);
+  float const b = as_type<float>(1.0f);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/f32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/f32-i32.wgsl.expected.msl
index a2bdd13361..d66d495ba7 100644
--- a/test/tint/expressions/bitcast/scalar/f32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/f32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float const a = 1.0f;
-  int const b = as_type<int>(a);
+  int const b = as_type<int>(1.0f);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/f32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/f32-u32.wgsl.expected.msl
index f0e4685c88..3b94610667 100644
--- a/test/tint/expressions/bitcast/scalar/f32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/f32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float const a = 1.0f;
-  uint const b = as_type<uint>(a);
+  uint const b = as_type<uint>(1.0f);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/i32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/i32-f32.wgsl.expected.msl
index 4368427ee5..9cd878cc90 100644
--- a/test/tint/expressions/bitcast/scalar/i32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/i32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int const a = 1;
-  float const b = as_type<float>(a);
+  float const b = as_type<float>(1);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/i32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/i32-i32.wgsl.expected.msl
index 782176abed..6e13d479fb 100644
--- a/test/tint/expressions/bitcast/scalar/i32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/i32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int const a = 1;
-  int const b = as_type<int>(a);
+  int const b = as_type<int>(1);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/i32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/i32-u32.wgsl.expected.msl
index dd82cdd589..d148cfd922 100644
--- a/test/tint/expressions/bitcast/scalar/i32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/i32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int const a = 1;
-  uint const b = as_type<uint>(a);
+  uint const b = as_type<uint>(1);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/u32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/u32-f32.wgsl.expected.msl
index f019dafa89..ae848a8522 100644
--- a/test/tint/expressions/bitcast/scalar/u32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/u32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint const a = 1u;
-  float const b = as_type<float>(a);
+  float const b = as_type<float>(1u);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/u32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/u32-i32.wgsl.expected.msl
index c6bd3b9371..430de90f04 100644
--- a/test/tint/expressions/bitcast/scalar/u32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/u32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint const a = 1u;
-  int const b = as_type<int>(a);
+  int const b = as_type<int>(1u);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/scalar/u32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/scalar/u32-u32.wgsl.expected.msl
index 01f346255d..d4ed95546e 100644
--- a/test/tint/expressions/bitcast/scalar/u32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/scalar/u32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint const a = 1u;
-  uint const b = as_type<uint>(a);
+  uint const b = as_type<uint>(1u);
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/f32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/f32-f32.wgsl.expected.msl
index 66dbb5577a..cc8ecac245 100644
--- a/test/tint/expressions/bitcast/vector/f32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/f32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
-  float3 const b = as_type<float3>(a);
+  float3 const b = as_type<float3>(float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/f32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/f32-i32.wgsl.expected.msl
index 2d64209909..5bbb2b49a3 100644
--- a/test/tint/expressions/bitcast/vector/f32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/f32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
-  int3 const b = as_type<int3>(a);
+  int3 const b = as_type<int3>(float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/f32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/f32-u32.wgsl.expected.msl
index b8a22f20db..b6441d4962 100644
--- a/test/tint/expressions/bitcast/vector/f32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/f32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   float3 const a = float3(1.0f, 2.0f, 3.0f);
-  uint3 const b = as_type<uint3>(a);
+  uint3 const b = as_type<uint3>(float3(1.0f, 2.0f, 3.0f));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/i32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/i32-f32.wgsl.expected.msl
index 14d44ea590..0a13cd7da5 100644
--- a/test/tint/expressions/bitcast/vector/i32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/i32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
-  float3 const b = as_type<float3>(a);
+  float3 const b = as_type<float3>(int3(1, 2, 3));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/i32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/i32-i32.wgsl.expected.msl
index 3c58a22da1..228aee50b5 100644
--- a/test/tint/expressions/bitcast/vector/i32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/i32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
-  int3 const b = as_type<int3>(a);
+  int3 const b = as_type<int3>(int3(1, 2, 3));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/i32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/i32-u32.wgsl.expected.msl
index 34f7964e49..efebc6be27 100644
--- a/test/tint/expressions/bitcast/vector/i32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/i32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   int3 const a = int3(1, 2, 3);
-  uint3 const b = as_type<uint3>(a);
+  uint3 const b = as_type<uint3>(int3(1, 2, 3));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/u32-f32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/u32-f32.wgsl.expected.msl
index 23762902cb..65e969b7d9 100644
--- a/test/tint/expressions/bitcast/vector/u32-f32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/u32-f32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
-  float3 const b = as_type<float3>(a);
+  float3 const b = as_type<float3>(uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/u32-i32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/u32-i32.wgsl.expected.msl
index 51c8f921e0..e8b5e5e3e8 100644
--- a/test/tint/expressions/bitcast/vector/u32-i32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/u32-i32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
-  int3 const b = as_type<int3>(a);
+  int3 const b = as_type<int3>(uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/bitcast/vector/u32-u32.wgsl.expected.msl b/test/tint/expressions/bitcast/vector/u32-u32.wgsl.expected.msl
index 43d1c6b18a..5e9386cdce 100644
--- a/test/tint/expressions/bitcast/vector/u32-u32.wgsl.expected.msl
+++ b/test/tint/expressions/bitcast/vector/u32-u32.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void f() {
   uint3 const a = uint3(1u, 2u, 3u);
-  uint3 const b = as_type<uint3>(a);
+  uint3 const b = as_type<uint3>(uint3(1u, 2u, 3u));
   return;
 }
 
diff --git a/test/tint/expressions/index/let/let/literal/array.wgsl.expected.msl b/test/tint/expressions/index/let/let/literal/array.wgsl.expected.msl
index 57bf97dffe..6a9487f706 100644
--- a/test/tint/expressions/index/let/let/literal/array.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/let/literal/array.wgsl.expected.msl
@@ -8,6 +8,6 @@ struct tint_array_wrapper {
 int f() {
   tint_array_wrapper const a = {.arr={1, 2, 3, 4, 5, 6, 7, 8}};
   int const i = 1;
-  return a.arr[i];
+  return a.arr[1];
 }
 
diff --git a/test/tint/expressions/index/let/let/literal/matrix.wgsl.expected.msl b/test/tint/expressions/index/let/let/literal/matrix.wgsl.expected.msl
index ca9238e6ec..606211b848 100644
--- a/test/tint/expressions/index/let/let/literal/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/let/literal/matrix.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float3 f() {
   float3x3 const m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   int const i = 1;
-  return m[i];
+  return float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f))[1];
 }
 
diff --git a/test/tint/expressions/index/let/let/literal/vector.wgsl.expected.msl b/test/tint/expressions/index/let/let/literal/vector.wgsl.expected.msl
index 587f5cf7d5..578bbe1130 100644
--- a/test/tint/expressions/index/let/let/literal/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/let/literal/vector.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float f() {
   float3 const v = float3(1.0f, 2.0f, 3.0f);
   int const i = 1;
-  return v[i];
+  return float3(1.0f, 2.0f, 3.0f)[1];
 }
 
diff --git a/test/tint/expressions/index/let/let/param/matrix.wgsl.expected.msl b/test/tint/expressions/index/let/let/param/matrix.wgsl.expected.msl
index 647d17a49d..200e973b9b 100644
--- a/test/tint/expressions/index/let/let/param/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/let/param/matrix.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float3 f(int x) {
   float3x3 const m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   int const i = x;
-  return m[i];
+  return float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f))[i];
 }
 
diff --git a/test/tint/expressions/index/let/let/param/vector.wgsl.expected.msl b/test/tint/expressions/index/let/let/param/vector.wgsl.expected.msl
index b0d8ca96ed..6f1368503b 100644
--- a/test/tint/expressions/index/let/let/param/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/let/param/vector.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float f(int x) {
   float3 const v = float3(1.0f, 2.0f, 3.0f);
   int const i = x;
-  return v[i];
+  return float3(1.0f, 2.0f, 3.0f)[i];
 }
 
diff --git a/test/tint/expressions/index/let/literal/matrix.wgsl.expected.msl b/test/tint/expressions/index/let/literal/matrix.wgsl.expected.msl
index 92a23c43b3..f987c403f5 100644
--- a/test/tint/expressions/index/let/literal/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/literal/matrix.wgsl.expected.msl
@@ -3,6 +3,6 @@
 using namespace metal;
 float3 f() {
   float3x3 const m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
-  return m[1];
+  return float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f))[1];
 }
 
diff --git a/test/tint/expressions/index/let/literal/vector.wgsl.expected.msl b/test/tint/expressions/index/let/literal/vector.wgsl.expected.msl
index 94dc06a6d7..70f2313f56 100644
--- a/test/tint/expressions/index/let/literal/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/literal/vector.wgsl.expected.msl
@@ -3,6 +3,6 @@
 using namespace metal;
 float f() {
   float3 const v = float3(1.0f, 2.0f, 3.0f);
-  return v[1];
+  return float3(1.0f, 2.0f, 3.0f)[1];
 }
 
diff --git a/test/tint/expressions/index/let/param/matrix.wgsl.expected.msl b/test/tint/expressions/index/let/param/matrix.wgsl.expected.msl
index 49218fd65b..722365f7fb 100644
--- a/test/tint/expressions/index/let/param/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/param/matrix.wgsl.expected.msl
@@ -3,6 +3,6 @@
 using namespace metal;
 float3 f(int i) {
   float3x3 const m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
-  return m[i];
+  return float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f))[i];
 }
 
diff --git a/test/tint/expressions/index/let/param/vector.wgsl.expected.msl b/test/tint/expressions/index/let/param/vector.wgsl.expected.msl
index 4d45110ae9..22d0e0b96b 100644
--- a/test/tint/expressions/index/let/param/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/param/vector.wgsl.expected.msl
@@ -3,6 +3,6 @@
 using namespace metal;
 float f(int i) {
   float3 const v = float3(1.0f, 2.0f, 3.0f);
-  return v[i];
+  return float3(1.0f, 2.0f, 3.0f)[i];
 }
 
diff --git a/test/tint/expressions/index/let/var/literal/array.wgsl.expected.msl b/test/tint/expressions/index/let/var/literal/array.wgsl.expected.msl
index 808c68843f..30f40e9304 100644
--- a/test/tint/expressions/index/let/var/literal/array.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/var/literal/array.wgsl.expected.msl
@@ -8,6 +8,6 @@ struct tint_array_wrapper {
 int f() {
   tint_array_wrapper a = {.arr={1, 2, 3, 4, 5, 6, 7, 8}};
   int const i = 1;
-  return a.arr[i];
+  return a.arr[1];
 }
 
diff --git a/test/tint/expressions/index/let/var/literal/matrix.wgsl.expected.msl b/test/tint/expressions/index/let/var/literal/matrix.wgsl.expected.msl
index 0536bc1f25..7d63bb431c 100644
--- a/test/tint/expressions/index/let/var/literal/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/var/literal/matrix.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float3 f() {
   float3x3 m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   int const i = 1;
-  return m[i];
+  return m[1];
 }
 
diff --git a/test/tint/expressions/index/let/var/literal/vector.wgsl.expected.msl b/test/tint/expressions/index/let/var/literal/vector.wgsl.expected.msl
index 07ca4fb81a..900e66624f 100644
--- a/test/tint/expressions/index/let/var/literal/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/let/var/literal/vector.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float f() {
   float3 v = float3(1.0f, 2.0f, 3.0f);
   int const i = 1;
-  return v[i];
+  return v[1];
 }
 
diff --git a/test/tint/expressions/index/var/let/literal/array.wgsl.expected.msl b/test/tint/expressions/index/var/let/literal/array.wgsl.expected.msl
index 808c68843f..30f40e9304 100644
--- a/test/tint/expressions/index/var/let/literal/array.wgsl.expected.msl
+++ b/test/tint/expressions/index/var/let/literal/array.wgsl.expected.msl
@@ -8,6 +8,6 @@ struct tint_array_wrapper {
 int f() {
   tint_array_wrapper a = {.arr={1, 2, 3, 4, 5, 6, 7, 8}};
   int const i = 1;
-  return a.arr[i];
+  return a.arr[1];
 }
 
diff --git a/test/tint/expressions/index/var/let/literal/matrix.wgsl.expected.msl b/test/tint/expressions/index/var/let/literal/matrix.wgsl.expected.msl
index 0536bc1f25..7d63bb431c 100644
--- a/test/tint/expressions/index/var/let/literal/matrix.wgsl.expected.msl
+++ b/test/tint/expressions/index/var/let/literal/matrix.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float3 f() {
   float3x3 m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
   int const i = 1;
-  return m[i];
+  return m[1];
 }
 
diff --git a/test/tint/expressions/index/var/let/literal/vector.wgsl.expected.msl b/test/tint/expressions/index/var/let/literal/vector.wgsl.expected.msl
index 07ca4fb81a..900e66624f 100644
--- a/test/tint/expressions/index/var/let/literal/vector.wgsl.expected.msl
+++ b/test/tint/expressions/index/var/let/literal/vector.wgsl.expected.msl
@@ -4,6 +4,6 @@ using namespace metal;
 float f() {
   float3 v = float3(1.0f, 2.0f, 3.0f);
   int const i = 1;
-  return v[i];
+  return v[1];
 }
 
diff --git a/test/tint/expressions/literals/-inf.spvasm.expected.msl b/test/tint/expressions/literals/-inf.spvasm.expected.msl
index f9c80baa16..561c9a21ad 100644
--- a/test/tint/expressions/literals/-inf.spvasm.expected.msl
+++ b/test/tint/expressions/literals/-inf.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void main_1(thread float4* const tint_symbol_3) {
-  *(tint_symbol_3) = float4(-INFINITY, -INFINITY, -INFINITY, -INFINITY);
+  *(tint_symbol_3) = float4(-INFINITY);
   return;
 }
 
diff --git a/test/tint/expressions/literals/inf.spvasm.expected.msl b/test/tint/expressions/literals/inf.spvasm.expected.msl
index 73aca9e91e..95e5c78761 100644
--- a/test/tint/expressions/literals/inf.spvasm.expected.msl
+++ b/test/tint/expressions/literals/inf.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void main_1(thread float4* const tint_symbol_3) {
-  *(tint_symbol_3) = float4(INFINITY, INFINITY, INFINITY, INFINITY);
+  *(tint_symbol_3) = float4(INFINITY);
   return;
 }
 
diff --git a/test/tint/expressions/type_ctor/mat2x2/explicit/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat2x2/explicit/identity/f32.wgsl.expected.msl
index f90a722b64..9076107a14 100644
--- a/test/tint/expressions/type_ctor/mat2x2/explicit/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat2x2/explicit/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float2x2 m = float2x2();
+constant float2x2 m = float2x2(float2(0.0f), float2(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat2x3/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat2x3/identity/f32.wgsl.expected.msl
index 1c8d85f670..05150a20f0 100644
--- a/test/tint/expressions/type_ctor/mat2x3/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat2x3/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float2x3 m = float2x3();
+constant float2x3 m = float2x3(float3(0.0f), float3(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat2x4/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat2x4/identity/f32.wgsl.expected.msl
index d63d1433ee..035e80e900 100644
--- a/test/tint/expressions/type_ctor/mat2x4/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat2x4/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float2x4 m = float2x4();
+constant float2x4 m = float2x4(float4(0.0f), float4(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat3x2/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat3x2/identity/f32.wgsl.expected.msl
index da78e12551..1dc48eba2d 100644
--- a/test/tint/expressions/type_ctor/mat3x2/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat3x2/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float3x2 m = float3x2();
+constant float3x2 m = float3x2(float2(0.0f), float2(0.0f), float2(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat3x3/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat3x3/identity/f32.wgsl.expected.msl
index 09b6b5c4b1..ddcb08ddf1 100644
--- a/test/tint/expressions/type_ctor/mat3x3/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat3x3/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float3x3 m = float3x3();
+constant float3x3 m = float3x3(float3(0.0f), float3(0.0f), float3(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat3x4/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat3x4/identity/f32.wgsl.expected.msl
index a038e7021b..deba45f734 100644
--- a/test/tint/expressions/type_ctor/mat3x4/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat3x4/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float3x4 m = float3x4();
+constant float3x4 m = float3x4(float4(0.0f), float4(0.0f), float4(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat4x2/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat4x2/identity/f32.wgsl.expected.msl
index 1a297fac4f..ef2e67540b 100644
--- a/test/tint/expressions/type_ctor/mat4x2/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat4x2/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float4x2 m = float4x2();
+constant float4x2 m = float4x2(float2(0.0f), float2(0.0f), float2(0.0f), float2(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat4x3/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat4x3/identity/f32.wgsl.expected.msl
index 977c351e47..88679a8ff9 100644
--- a/test/tint/expressions/type_ctor/mat4x3/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat4x3/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float4x3 m = float4x3();
+constant float4x3 m = float4x3(float3(0.0f), float3(0.0f), float3(0.0f), float3(0.0f));
 
diff --git a/test/tint/expressions/type_ctor/mat4x4/identity/f32.wgsl.expected.msl b/test/tint/expressions/type_ctor/mat4x4/identity/f32.wgsl.expected.msl
index 7df151fd6c..9389ca4b76 100644
--- a/test/tint/expressions/type_ctor/mat4x4/identity/f32.wgsl.expected.msl
+++ b/test/tint/expressions/type_ctor/mat4x4/identity/f32.wgsl.expected.msl
@@ -1,5 +1,5 @@
 #include <metal_stdlib>
 
 using namespace metal;
-constant float4x4 m = float4x4();
+constant float4x4 m = float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f));
 
diff --git a/test/tint/expressions/zero_init/mat2x2/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat2x2/f32.wgsl.expected.msl
index 323a16b57a..fe3798dabd 100644
--- a/test/tint/expressions/zero_init/mat2x2/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat2x2/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float2x2 v = float2x2();
+  float2x2 v = float2x2(float2(0.0f), float2(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat2x3/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat2x3/f32.wgsl.expected.msl
index 6b1c1a6d8a..97feea8104 100644
--- a/test/tint/expressions/zero_init/mat2x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat2x3/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float2x3 v = float2x3();
+  float2x3 v = float2x3(float3(0.0f), float3(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat2x4/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat2x4/f32.wgsl.expected.msl
index 07088be241..d078a6dc3b 100644
--- a/test/tint/expressions/zero_init/mat2x4/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat2x4/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float2x4 v = float2x4();
+  float2x4 v = float2x4(float4(0.0f), float4(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat3x2/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat3x2/f32.wgsl.expected.msl
index 8f611d235c..333cabf712 100644
--- a/test/tint/expressions/zero_init/mat3x2/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat3x2/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float3x2 v = float3x2();
+  float3x2 v = float3x2(float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat3x3/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat3x3/f32.wgsl.expected.msl
index 46aa385cfa..9d404a42c3 100644
--- a/test/tint/expressions/zero_init/mat3x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat3x3/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float3x3 v = float3x3();
+  float3x3 v = float3x3(float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat3x4/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat3x4/f32.wgsl.expected.msl
index 21f15d0b22..85d73cf8a7 100644
--- a/test/tint/expressions/zero_init/mat3x4/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat3x4/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float3x4 v = float3x4();
+  float3x4 v = float3x4(float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat4x2/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat4x2/f32.wgsl.expected.msl
index 5c2410f7ac..ac56eedd17 100644
--- a/test/tint/expressions/zero_init/mat4x2/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat4x2/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float4x2 v = float4x2();
+  float4x2 v = float4x2(float2(0.0f), float2(0.0f), float2(0.0f), float2(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat4x3/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat4x3/f32.wgsl.expected.msl
index 80c8b94d7f..555091d84e 100644
--- a/test/tint/expressions/zero_init/mat4x3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat4x3/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float4x3 v = float4x3();
+  float4x3 v = float4x3(float3(0.0f), float3(0.0f), float3(0.0f), float3(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/mat4x4/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/mat4x4/f32.wgsl.expected.msl
index 9b2c252ed4..e25f4b3cbd 100644
--- a/test/tint/expressions/zero_init/mat4x4/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/mat4x4/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float4x4 v = float4x4();
+  float4x4 v = float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f));
 }
 
diff --git a/test/tint/expressions/zero_init/scalar/bool.wgsl.expected.msl b/test/tint/expressions/zero_init/scalar/bool.wgsl.expected.msl
index a68d88c79d..0913b4c7fb 100644
--- a/test/tint/expressions/zero_init/scalar/bool.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/scalar/bool.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  bool v = bool();
+  bool v = false;
 }
 
diff --git a/test/tint/expressions/zero_init/scalar/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/scalar/f32.wgsl.expected.msl
index 7e8266ed6a..04daba28db 100644
--- a/test/tint/expressions/zero_init/scalar/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/scalar/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float v = float();
+  float v = 0.0f;
 }
 
diff --git a/test/tint/expressions/zero_init/scalar/i32.wgsl.expected.msl b/test/tint/expressions/zero_init/scalar/i32.wgsl.expected.msl
index 222df20d76..cffd2c1b24 100644
--- a/test/tint/expressions/zero_init/scalar/i32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/scalar/i32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  int v = int();
+  int v = 0;
 }
 
diff --git a/test/tint/expressions/zero_init/scalar/u32.wgsl.expected.msl b/test/tint/expressions/zero_init/scalar/u32.wgsl.expected.msl
index e11e857be4..1e9a665290 100644
--- a/test/tint/expressions/zero_init/scalar/u32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/scalar/u32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  uint v = uint();
+  uint v = 0u;
 }
 
diff --git a/test/tint/expressions/zero_init/vec2/bool.wgsl.expected.msl b/test/tint/expressions/zero_init/vec2/bool.wgsl.expected.msl
index fd03aaf1b9..91af3c746e 100644
--- a/test/tint/expressions/zero_init/vec2/bool.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec2/bool.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  bool2 v = bool2();
+  bool2 v = bool2(false);
 }
 
diff --git a/test/tint/expressions/zero_init/vec2/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec2/f32.wgsl.expected.msl
index 07013f1e94..39f121ae00 100644
--- a/test/tint/expressions/zero_init/vec2/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec2/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float2 v = float2();
+  float2 v = float2(0.0f);
 }
 
diff --git a/test/tint/expressions/zero_init/vec2/i32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec2/i32.wgsl.expected.msl
index d29f4d1df9..2732848ad1 100644
--- a/test/tint/expressions/zero_init/vec2/i32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec2/i32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  int2 v = int2();
+  int2 v = int2(0);
 }
 
diff --git a/test/tint/expressions/zero_init/vec2/u32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec2/u32.wgsl.expected.msl
index 9c0f70cf37..e47d1d37fa 100644
--- a/test/tint/expressions/zero_init/vec2/u32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec2/u32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  uint2 v = uint2();
+  uint2 v = uint2(0u);
 }
 
diff --git a/test/tint/expressions/zero_init/vec3/bool.wgsl.expected.msl b/test/tint/expressions/zero_init/vec3/bool.wgsl.expected.msl
index fa8cb80ed5..c09ff79e40 100644
--- a/test/tint/expressions/zero_init/vec3/bool.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec3/bool.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  bool3 v = bool3();
+  bool3 v = bool3(false);
 }
 
diff --git a/test/tint/expressions/zero_init/vec3/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec3/f32.wgsl.expected.msl
index c40910cd65..e6660e3f13 100644
--- a/test/tint/expressions/zero_init/vec3/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec3/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float3 v = float3();
+  float3 v = float3(0.0f);
 }
 
diff --git a/test/tint/expressions/zero_init/vec3/i32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec3/i32.wgsl.expected.msl
index 86777661cc..8a0e41e797 100644
--- a/test/tint/expressions/zero_init/vec3/i32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec3/i32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  int3 v = int3();
+  int3 v = int3(0);
 }
 
diff --git a/test/tint/expressions/zero_init/vec3/u32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec3/u32.wgsl.expected.msl
index bb2de04b9d..2460883a7d 100644
--- a/test/tint/expressions/zero_init/vec3/u32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec3/u32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  uint3 v = uint3();
+  uint3 v = uint3(0u);
 }
 
diff --git a/test/tint/expressions/zero_init/vec4/bool.wgsl.expected.msl b/test/tint/expressions/zero_init/vec4/bool.wgsl.expected.msl
index 0d3be82417..757574d093 100644
--- a/test/tint/expressions/zero_init/vec4/bool.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec4/bool.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  bool4 v = bool4();
+  bool4 v = bool4(false);
 }
 
diff --git a/test/tint/expressions/zero_init/vec4/f32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec4/f32.wgsl.expected.msl
index 76c2b7798c..c3f90b5f96 100644
--- a/test/tint/expressions/zero_init/vec4/f32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec4/f32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  float4 v = float4();
+  float4 v = float4(0.0f);
 }
 
diff --git a/test/tint/expressions/zero_init/vec4/i32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec4/i32.wgsl.expected.msl
index 78ebdab612..8d8ee8e5cc 100644
--- a/test/tint/expressions/zero_init/vec4/i32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec4/i32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  int4 v = int4();
+  int4 v = int4(0);
 }
 
diff --git a/test/tint/expressions/zero_init/vec4/u32.wgsl.expected.msl b/test/tint/expressions/zero_init/vec4/u32.wgsl.expected.msl
index 9d55361706..bb5fafabc0 100644
--- a/test/tint/expressions/zero_init/vec4/u32.wgsl.expected.msl
+++ b/test/tint/expressions/zero_init/vec4/u32.wgsl.expected.msl
@@ -2,6 +2,6 @@
 
 using namespace metal;
 void f() {
-  uint4 v = uint4();
+  uint4 v = uint4(0u);
 }
 
diff --git a/test/tint/identifiers/underscore/double/let.wgsl.expected.msl b/test/tint/identifiers/underscore/double/let.wgsl.expected.msl
index 47c1b05685..0d7413fbaf 100644
--- a/test/tint/identifiers/underscore/double/let.wgsl.expected.msl
+++ b/test/tint/identifiers/underscore/double/let.wgsl.expected.msl
@@ -6,7 +6,7 @@ constant int a = 1;
 constant int a__ = 2;
 
 void f() {
-  int const b = a;
-  int const b__ = a__;
+  int const b = 1;
+  int const b__ = 2;
 }
 
diff --git a/test/tint/identifiers/underscore/prefix/lower/let.wgsl.expected.msl b/test/tint/identifiers/underscore/prefix/lower/let.wgsl.expected.msl
index 7b3d669476..78eb6686c2 100644
--- a/test/tint/identifiers/underscore/prefix/lower/let.wgsl.expected.msl
+++ b/test/tint/identifiers/underscore/prefix/lower/let.wgsl.expected.msl
@@ -6,7 +6,7 @@ constant int a = 1;
 constant int _a = 2;
 
 void f() {
-  int const b = a;
-  int const _b = _a;
+  int const b = 1;
+  int const _b = 2;
 }
 
diff --git a/test/tint/identifiers/underscore/prefix/upper/let.wgsl.expected.msl b/test/tint/identifiers/underscore/prefix/upper/let.wgsl.expected.msl
index 5afe76fb2b..a3e94db890 100644
--- a/test/tint/identifiers/underscore/prefix/upper/let.wgsl.expected.msl
+++ b/test/tint/identifiers/underscore/prefix/upper/let.wgsl.expected.msl
@@ -6,7 +6,7 @@ constant int A = 1;
 constant int _A = 2;
 
 void f() {
-  int const B = A;
-  int const _B = _A;
+  int const B = 1;
+  int const _B = 2;
 }
 
diff --git a/test/tint/let/global/global.wgsl.expected.msl b/test/tint/let/global/global.wgsl.expected.msl
index d5efc4eda1..72d5df75d4 100644
--- a/test/tint/let/global/global.wgsl.expected.msl
+++ b/test/tint/let/global/global.wgsl.expected.msl
@@ -15,13 +15,13 @@ constant uint v2 = 1u;
 
 constant float v3 = 1.0f;
 
-constant int3 v4 = int3(1, 1, 1);
+constant int3 v4 = int3(1);
 
-constant uint3 v5 = uint3(1u, 1u, 1u);
+constant uint3 v5 = uint3(1u);
 
-constant float3 v6 = float3(1.0f, 1.0f, 1.0f);
+constant float3 v6 = float3(1.0f);
 
-constant float3x3 v7 = float3x3(float3(1.0f, 1.0f, 1.0f), float3(1.0f, 1.0f, 1.0f), float3(1.0f, 1.0f, 1.0f));
+constant float3x3 v7 = float3x3(float3(1.0f), float3(1.0f), float3(1.0f));
 
 constant MyStruct v8 = {};
 
@@ -32,7 +32,7 @@ struct tint_symbol_1 {
 };
 
 float4 tint_symbol_inner() {
-  return float4(0.0f, 0.0f, 0.0f, 0.0f);
+  return float4(0.0f);
 }
 
 fragment tint_symbol_1 tint_symbol() {
diff --git a/test/tint/let/inferred/function.wgsl.expected.msl b/test/tint/let/inferred/function.wgsl.expected.msl
index 6a699b5f81..9d93fcfe4f 100644
--- a/test/tint/let/inferred/function.wgsl.expected.msl
+++ b/test/tint/let/inferred/function.wgsl.expected.msl
@@ -35,10 +35,10 @@ void let_decls() {
   int const v1 = 1;
   uint const v2 = 1u;
   float const v3 = 1.0f;
-  int3 const v4 = int3(1, 1, 1);
-  uint3 const v5 = uint3(1u, 1u, 1u);
-  float3 const v6 = float3(1.0f, 1.0f, 1.0f);
-  float3x3 const v7 = float3x3(v6, v6, v6);
+  int3 const v4 = int3(1);
+  uint3 const v5 = uint3(1u);
+  float3 const v6 = float3(1.0f);
+  float3x3 const v7 = float3x3(float3(1.0f), float3(1.0f), float3(1.0f));
   MyStruct const v8 = {.f1=1.0f};
   tint_array_wrapper const v9 = {.arr={}};
   int const v10 = ret_i32();
@@ -54,7 +54,7 @@ struct tint_symbol_1 {
 };
 
 float4 tint_symbol_inner() {
-  return float4(0.0f, 0.0f, 0.0f, 0.0f);
+  return float4(0.0f);
 }
 
 fragment tint_symbol_1 tint_symbol() {
diff --git a/test/tint/out_of_order_decls/func/let.wgsl.expected.msl b/test/tint/out_of_order_decls/func/let.wgsl.expected.msl
index 2509d6c788..5e4032c5ed 100644
--- a/test/tint/out_of_order_decls/func/let.wgsl.expected.msl
+++ b/test/tint/out_of_order_decls/func/let.wgsl.expected.msl
@@ -4,7 +4,7 @@ using namespace metal;
 constant int a = 1;
 
 fragment void f() {
-  int const b = a;
+  int const b = 1;
   return;
 }
 
diff --git a/test/tint/ptr_ref/access/matrix.spvasm.expected.msl b/test/tint/ptr_ref/access/matrix.spvasm.expected.msl
index e301589b54..4b2c2f7462 100644
--- a/test/tint/ptr_ref/access/matrix.spvasm.expected.msl
+++ b/test/tint/ptr_ref/access/matrix.spvasm.expected.msl
@@ -2,9 +2,9 @@
 
 using namespace metal;
 void main_1() {
-  float3x3 m = float3x3();
+  float3x3 m = float3x3(float3(0.0f), float3(0.0f), float3(0.0f));
   m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
-  m[1] = float3(5.0f, 5.0f, 5.0f);
+  m[1] = float3(5.0f);
   return;
 }
 
diff --git a/test/tint/ptr_ref/access/matrix.wgsl.expected.msl b/test/tint/ptr_ref/access/matrix.wgsl.expected.msl
index 75c13af6bb..7454aafaef 100644
--- a/test/tint/ptr_ref/access/matrix.wgsl.expected.msl
+++ b/test/tint/ptr_ref/access/matrix.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 kernel void tint_symbol() {
   float3x3 m = float3x3(float3(1.0f, 2.0f, 3.0f), float3(4.0f, 5.0f, 6.0f), float3(7.0f, 8.0f, 9.0f));
-  m[1] = float3(5.0f, 5.0f, 5.0f);
+  m[1] = float3(5.0f);
   return;
 }
 
diff --git a/test/tint/ptr_ref/load/local/ptr_workgroup.wgsl.expected.msl b/test/tint/ptr_ref/load/local/ptr_workgroup.wgsl.expected.msl
index 7853720bbc..2e5293e01f 100644
--- a/test/tint/ptr_ref/load/local/ptr_workgroup.wgsl.expected.msl
+++ b/test/tint/ptr_ref/load/local/ptr_workgroup.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void tint_symbol_inner(uint local_invocation_index, threadgroup int* const tint_symbol_1) {
   {
-    *(tint_symbol_1) = int();
+    *(tint_symbol_1) = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   *(tint_symbol_1) = 123;
diff --git a/test/tint/samples/compute_boids.wgsl.expected.msl b/test/tint/samples/compute_boids.wgsl.expected.msl
index 399bdf38c2..cf438aba79 100644
--- a/test/tint/samples/compute_boids.wgsl.expected.msl
+++ b/test/tint/samples/compute_boids.wgsl.expected.msl
@@ -29,7 +29,7 @@ struct tint_symbol_3 {
 };
 
 float4 frag_main_inner() {
-  return float4(1.0f, 1.0f, 1.0f, 1.0f);
+  return float4(1.0f);
 }
 
 fragment tint_symbol_3 frag_main() {
@@ -69,9 +69,9 @@ void comp_main_inner(uint3 gl_GlobalInvocationID, device Particles* const tint_s
   }
   float2 vPos = (*(tint_symbol_4)).particles.arr[index].pos;
   float2 vVel = (*(tint_symbol_4)).particles.arr[index].vel;
-  float2 cMass = float2(0.0f, 0.0f);
-  float2 cVel = float2(0.0f, 0.0f);
-  float2 colVel = float2(0.0f, 0.0f);
+  float2 cMass = float2(0.0f);
+  float2 cVel = float2(0.0f);
+  float2 colVel = float2(0.0f);
   int cMassCount = 0;
   int cVelCount = 0;
   float2 pos = 0.0f;
diff --git a/test/tint/samples/simple.wgsl.expected.msl b/test/tint/samples/simple.wgsl.expected.msl
index d7fde539d8..d84f872afc 100644
--- a/test/tint/samples/simple.wgsl.expected.msl
+++ b/test/tint/samples/simple.wgsl.expected.msl
@@ -9,7 +9,7 @@ struct tint_symbol_1 {
 };
 
 float4 tint_symbol_inner() {
-  float2 a = float2();
+  float2 a = float2(0.0f);
   bar();
   return float4(0.400000006f, 0.400000006f, 0.800000012f, 1.0f);
 }
diff --git a/test/tint/samples/simple_vertex.spvasm.expected.msl b/test/tint/samples/simple_vertex.spvasm.expected.msl
index f12b315596..27cb3a45f5 100644
--- a/test/tint/samples/simple_vertex.spvasm.expected.msl
+++ b/test/tint/samples/simple_vertex.spvasm.expected.msl
@@ -2,7 +2,7 @@
 
 using namespace metal;
 void main_1(thread float4* const tint_symbol_3) {
-  *(tint_symbol_3) = float4(0.0f, 0.0f, 0.0f, 0.0f);
+  *(tint_symbol_3) = float4(0.0f);
   return;
 }
 
diff --git a/test/tint/samples/triangle.wgsl.expected.msl b/test/tint/samples/triangle.wgsl.expected.msl
index 246e75c83f..51fb847f96 100644
--- a/test/tint/samples/triangle.wgsl.expected.msl
+++ b/test/tint/samples/triangle.wgsl.expected.msl
@@ -5,7 +5,7 @@ struct tint_array_wrapper {
   float2 arr[3];
 };
 
-constant tint_array_wrapper pos = {.arr={float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)}};
+constant tint_array_wrapper pos = {.arr={float2(0.0f, 0.5f), float2(-0.5f), float2(0.5f, -0.5f)}};
 
 struct tint_symbol {
   float4 value [[position]];
diff --git a/test/tint/shader_io/invariant.wgsl.expected.msl b/test/tint/shader_io/invariant.wgsl.expected.msl
index 3d41ee7b8d..4f6e6f5645 100644
--- a/test/tint/shader_io/invariant.wgsl.expected.msl
+++ b/test/tint/shader_io/invariant.wgsl.expected.msl
@@ -13,7 +13,7 @@ struct tint_symbol_1 {
 };
 
 float4 tint_symbol_inner() {
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 tint_symbol() {
diff --git a/test/tint/shader_io/shared_struct_different_stages.wgsl.expected.msl b/test/tint/shader_io/shared_struct_different_stages.wgsl.expected.msl
index 4dc3f1f0a9..0fb65589ed 100644
--- a/test/tint/shader_io/shared_struct_different_stages.wgsl.expected.msl
+++ b/test/tint/shader_io/shared_struct_different_stages.wgsl.expected.msl
@@ -14,7 +14,7 @@ struct tint_symbol {
 };
 
 Interface vert_main_inner() {
-  Interface const tint_symbol_3 = {.col1=0.400000006f, .col2=0.600000024f, .pos=float4()};
+  Interface const tint_symbol_3 = {.col1=0.400000006f, .col2=0.600000024f, .pos=float4(0.0f)};
   return tint_symbol_3;
 }
 
diff --git a/test/tint/shader_io/vertex_input_builtins.wgsl.expected.msl b/test/tint/shader_io/vertex_input_builtins.wgsl.expected.msl
index 1ef825bfe6..727497c279 100644
--- a/test/tint/shader_io/vertex_input_builtins.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_input_builtins.wgsl.expected.msl
@@ -7,7 +7,7 @@ struct tint_symbol_1 {
 
 float4 tint_symbol_inner(uint vertex_index, uint instance_index) {
   uint const foo = (vertex_index + instance_index);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 tint_symbol(uint vertex_index [[vertex_id]], uint instance_index [[instance_id]]) {
diff --git a/test/tint/shader_io/vertex_input_builtins_struct.wgsl.expected.msl b/test/tint/shader_io/vertex_input_builtins_struct.wgsl.expected.msl
index 6f67049881..136d88b320 100644
--- a/test/tint/shader_io/vertex_input_builtins_struct.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_input_builtins_struct.wgsl.expected.msl
@@ -12,7 +12,7 @@ struct tint_symbol_1 {
 
 float4 tint_symbol_inner(VertexInputs inputs) {
   uint const foo = (inputs.vertex_index + inputs.instance_index);
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_1 tint_symbol(uint vertex_index [[vertex_id]], uint instance_index [[instance_id]]) {
diff --git a/test/tint/shader_io/vertex_input_locations.wgsl.expected.msl b/test/tint/shader_io/vertex_input_locations.wgsl.expected.msl
index f45c47ec65..0d6a66bbe1 100644
--- a/test/tint/shader_io/vertex_input_locations.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_input_locations.wgsl.expected.msl
@@ -17,7 +17,7 @@ float4 tint_symbol_inner(int loc0, uint loc1, float loc2, float4 loc3) {
   uint const u = loc1;
   float const f = loc2;
   float4 const v = loc3;
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_3 tint_symbol(tint_symbol_2 tint_symbol_1 [[stage_in]]) {
diff --git a/test/tint/shader_io/vertex_input_locations_struct.wgsl.expected.msl b/test/tint/shader_io/vertex_input_locations_struct.wgsl.expected.msl
index 0391ee480c..d0fcffe1e3 100644
--- a/test/tint/shader_io/vertex_input_locations_struct.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_input_locations_struct.wgsl.expected.msl
@@ -24,7 +24,7 @@ float4 tint_symbol_inner(VertexInputs inputs) {
   uint const u = inputs.loc1;
   float const f = inputs.loc2;
   float4 const v = inputs.loc3;
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_3 tint_symbol(tint_symbol_2 tint_symbol_1 [[stage_in]]) {
diff --git a/test/tint/shader_io/vertex_input_mixed.wgsl.expected.msl b/test/tint/shader_io/vertex_input_mixed.wgsl.expected.msl
index 03c4e970dd..1ce7b01ae3 100644
--- a/test/tint/shader_io/vertex_input_mixed.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_input_mixed.wgsl.expected.msl
@@ -28,7 +28,7 @@ float4 tint_symbol_inner(VertexInputs0 inputs0, uint loc1, uint instance_index,
   uint const u = loc1;
   float const f = inputs1.loc2;
   float4 const v = inputs1.loc3;
-  return float4();
+  return float4(0.0f);
 }
 
 vertex tint_symbol_3 tint_symbol(uint vertex_index [[vertex_id]], uint instance_index [[instance_id]], tint_symbol_2 tint_symbol_1 [[stage_in]]) {
diff --git a/test/tint/shader_io/vertex_output_locations_struct.wgsl.expected.msl b/test/tint/shader_io/vertex_output_locations_struct.wgsl.expected.msl
index b24884e721..6b04060e6e 100644
--- a/test/tint/shader_io/vertex_output_locations_struct.wgsl.expected.msl
+++ b/test/tint/shader_io/vertex_output_locations_struct.wgsl.expected.msl
@@ -18,7 +18,7 @@ struct tint_symbol_1 {
 };
 
 VertexOutputs tint_symbol_inner() {
-  VertexOutputs const tint_symbol_2 = {.loc0=1, .loc1=1u, .loc2=1.0f, .loc3=float4(1.0f, 2.0f, 3.0f, 4.0f), .position=float4()};
+  VertexOutputs const tint_symbol_2 = {.loc0=1, .loc1=1u, .loc2=1.0f, .loc3=float4(1.0f, 2.0f, 3.0f, 4.0f), .position=float4(0.0f)};
   return tint_symbol_2;
 }
 
diff --git a/test/tint/shadowing/alias/let.wgsl.expected.msl b/test/tint/shadowing/alias/let.wgsl.expected.msl
index acd894e4c2..4241865826 100644
--- a/test/tint/shadowing/alias/let.wgsl.expected.msl
+++ b/test/tint/shadowing/alias/let.wgsl.expected.msl
@@ -3,10 +3,10 @@
 using namespace metal;
 void f() {
   {
-    int const a_1 = int();
-    int const b = a_1;
+    int const a_1 = 0;
+    int const b = 0;
   }
-  int const a_2 = int();
-  int const b = a_2;
+  int const a_2 = 0;
+  int const b = 0;
 }
 
diff --git a/test/tint/shadowing/alias/var.wgsl.expected.msl b/test/tint/shadowing/alias/var.wgsl.expected.msl
index d507d61cb0..8dfd0c9167 100644
--- a/test/tint/shadowing/alias/var.wgsl.expected.msl
+++ b/test/tint/shadowing/alias/var.wgsl.expected.msl
@@ -3,10 +3,10 @@
 using namespace metal;
 void f() {
   {
-    int a_1 = int();
+    int a_1 = 0;
     int b = a_1;
   }
-  int a_2 = int();
+  int a_2 = 0;
   int b = a_2;
 }
 
diff --git a/test/tint/shadowing/function/let.wgsl.expected.msl b/test/tint/shadowing/function/let.wgsl.expected.msl
index 16f3280523..6f2d8d32b0 100644
--- a/test/tint/shadowing/function/let.wgsl.expected.msl
+++ b/test/tint/shadowing/function/let.wgsl.expected.msl
@@ -7,6 +7,6 @@ void a() {
     int b = a_1;
   }
   int const a_2 = 1;
-  int const b = a_2;
+  int const b = 1;
 }
 
diff --git a/test/tint/statements/compound_assign/function.wgsl.expected.msl b/test/tint/statements/compound_assign/function.wgsl.expected.msl
index 608c013c00..3acbce949b 100644
--- a/test/tint/statements/compound_assign/function.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/function.wgsl.expected.msl
@@ -6,7 +6,7 @@ void foo() {
   float4 b = 0.0f;
   float2x2 c = float2x2(0.0f);
   a = (a / 2);
-  b = (b * float4x4());
+  b = (b * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
   c = (c * 2.0f);
 }
 
diff --git a/test/tint/statements/compound_assign/matrix/minus.wgsl.expected.msl b/test/tint/statements/compound_assign/matrix/minus.wgsl.expected.msl
index f6fb29f74a..48aaec6683 100644
--- a/test/tint/statements/compound_assign/matrix/minus.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/matrix/minus.wgsl.expected.msl
@@ -6,6 +6,6 @@ struct S {
 };
 
 void foo(device S* const tint_symbol) {
-  (*(tint_symbol)).a = ((*(tint_symbol)).a - float4x4());
+  (*(tint_symbol)).a = ((*(tint_symbol)).a - float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
diff --git a/test/tint/statements/compound_assign/matrix/plus.wgsl.expected.msl b/test/tint/statements/compound_assign/matrix/plus.wgsl.expected.msl
index 7ff7cc90ee..9dc0ba5d00 100644
--- a/test/tint/statements/compound_assign/matrix/plus.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/matrix/plus.wgsl.expected.msl
@@ -6,6 +6,6 @@ struct S {
 };
 
 void foo(device S* const tint_symbol) {
-  (*(tint_symbol)).a = ((*(tint_symbol)).a + float4x4());
+  (*(tint_symbol)).a = ((*(tint_symbol)).a + float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
diff --git a/test/tint/statements/compound_assign/matrix/times.wgsl.expected.msl b/test/tint/statements/compound_assign/matrix/times.wgsl.expected.msl
index bfce1924d0..7dfd863869 100644
--- a/test/tint/statements/compound_assign/matrix/times.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/matrix/times.wgsl.expected.msl
@@ -6,6 +6,6 @@ struct S {
 };
 
 void foo(device S* const tint_symbol) {
-  (*(tint_symbol)).a = ((*(tint_symbol)).a * float4x4());
+  (*(tint_symbol)).a = ((*(tint_symbol)).a * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
diff --git a/test/tint/statements/compound_assign/private.wgsl.expected.msl b/test/tint/statements/compound_assign/private.wgsl.expected.msl
index 5b9bcdc082..19fdb2fd36 100644
--- a/test/tint/statements/compound_assign/private.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/private.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void foo(thread int* const tint_symbol, thread float4* const tint_symbol_1, thread float2x2* const tint_symbol_2) {
   *(tint_symbol) = (*(tint_symbol) / 2);
-  *(tint_symbol_1) = (*(tint_symbol_1) * float4x4());
+  *(tint_symbol_1) = (*(tint_symbol_1) * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
   *(tint_symbol_2) = (*(tint_symbol_2) * 2.0f);
 }
 
diff --git a/test/tint/statements/compound_assign/vector/times-matrix.wgsl.expected.msl b/test/tint/statements/compound_assign/vector/times-matrix.wgsl.expected.msl
index b7722c8618..7fd679063d 100644
--- a/test/tint/statements/compound_assign/vector/times-matrix.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/vector/times-matrix.wgsl.expected.msl
@@ -6,6 +6,6 @@ struct S {
 };
 
 void foo(device S* const tint_symbol) {
-  (*(tint_symbol)).a = ((*(tint_symbol)).a * float4x4());
+  (*(tint_symbol)).a = ((*(tint_symbol)).a * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
 }
 
diff --git a/test/tint/statements/compound_assign/workgroup.wgsl.expected.msl b/test/tint/statements/compound_assign/workgroup.wgsl.expected.msl
index 14ce2d4811..4335b158fa 100644
--- a/test/tint/statements/compound_assign/workgroup.wgsl.expected.msl
+++ b/test/tint/statements/compound_assign/workgroup.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void foo(threadgroup int* const tint_symbol, threadgroup float4* const tint_symbol_1, threadgroup float2x2* const tint_symbol_2) {
   *(tint_symbol) = (*(tint_symbol) / 2);
-  *(tint_symbol_1) = (*(tint_symbol_1) * float4x4());
+  *(tint_symbol_1) = (*(tint_symbol_1) * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
   *(tint_symbol_2) = (*(tint_symbol_2) * 2.0f);
 }
 
diff --git a/test/tint/statements/decrement/vector_component.wgsl.expected.msl b/test/tint/statements/decrement/vector_component.wgsl.expected.msl
index 7211766631..ce181447c2 100644
--- a/test/tint/statements/decrement/vector_component.wgsl.expected.msl
+++ b/test/tint/statements/decrement/vector_component.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void tint_symbol(device uint4* const tint_symbol_3) {
   int const tint_symbol_2 = 1;
-  (*(tint_symbol_3))[tint_symbol_2] = ((*(tint_symbol_3))[tint_symbol_2] - 1u);
+  (*(tint_symbol_3))[1] = ((*(tint_symbol_3))[1] - 1u);
   (*(tint_symbol_3))[2] = ((*(tint_symbol_3))[2] - 1u);
 }
 
diff --git a/test/tint/statements/increment/vector_component.wgsl.expected.msl b/test/tint/statements/increment/vector_component.wgsl.expected.msl
index 872885467b..8a3113b8c4 100644
--- a/test/tint/statements/increment/vector_component.wgsl.expected.msl
+++ b/test/tint/statements/increment/vector_component.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void tint_symbol(device uint4* const tint_symbol_3) {
   int const tint_symbol_2 = 1;
-  (*(tint_symbol_3))[tint_symbol_2] = ((*(tint_symbol_3))[tint_symbol_2] + 1u);
+  (*(tint_symbol_3))[1] = ((*(tint_symbol_3))[1] + 1u);
   (*(tint_symbol_3))[2] = ((*(tint_symbol_3))[2] + 1u);
 }
 
diff --git a/test/tint/struct/type_constructor.wgsl.expected.msl b/test/tint/struct/type_constructor.wgsl.expected.msl
index e36df06a43..d0449b8c53 100644
--- a/test/tint/struct/type_constructor.wgsl.expected.msl
+++ b/test/tint/struct/type_constructor.wgsl.expected.msl
@@ -35,27 +35,27 @@ kernel void tint_symbol() {
   int const x = 42;
   S1 const empty = {};
   S1 const nonempty = {.a=1, .b=2, .c=3, .d=4};
-  S1 const nonempty_with_expr = {.a=1, .b=x, .c=as_type<int>((as_type<uint>(x) + as_type<uint>(1))), .d=nonempty.d};
+  S1 const nonempty_with_expr = {.a=1, .b=42, .c=as_type<int>((as_type<uint>(42) + as_type<uint>(1))), .d=nonempty.d};
   S3 const nested_empty = {};
   S1 const tint_symbol_1 = {.a=2, .b=3, .c=4, .d=5};
   S1 const tint_symbol_2 = {.a=7, .b=8, .c=9, .d=10};
   S2 const tint_symbol_3 = {.e=6, .f=tint_symbol_2};
   S3 const nested_nonempty = {.g=1, .h=tint_symbol_1, .i=tint_symbol_3};
-  S1 const tint_symbol_4 = {.a=2, .b=x, .c=as_type<int>((as_type<uint>(x) + as_type<uint>(1))), .d=nested_nonempty.i.f.d};
+  S1 const tint_symbol_4 = {.a=2, .b=42, .c=as_type<int>((as_type<uint>(42) + as_type<uint>(1))), .d=nested_nonempty.i.f.d};
   S2 const tint_symbol_5 = {.e=6, .f=nonempty};
   S3 const nested_nonempty_with_expr = {.g=1, .h=tint_symbol_4, .i=tint_symbol_5};
   S1 const tint_symbol_6 = {};
   int const subexpr_empty = tint_symbol_6.a;
   S1 const tint_symbol_7 = {.a=1, .b=2, .c=3, .d=4};
   int const subexpr_nonempty = tint_symbol_7.b;
-  S1 const tint_symbol_8 = {.a=1, .b=x, .c=as_type<int>((as_type<uint>(x) + as_type<uint>(1))), .d=nonempty.d};
+  S1 const tint_symbol_8 = {.a=1, .b=42, .c=as_type<int>((as_type<uint>(42) + as_type<uint>(1))), .d=nonempty.d};
   int const subexpr_nonempty_with_expr = tint_symbol_8.c;
   S2 const tint_symbol_9 = {};
   S1 const subexpr_nested_empty = tint_symbol_9.f;
   S1 const tint_symbol_10 = {.a=2, .b=3, .c=4, .d=5};
   S2 const tint_symbol_11 = {.e=1, .f=tint_symbol_10};
   S1 const subexpr_nested_nonempty = tint_symbol_11.f;
-  S1 const tint_symbol_12 = {.a=2, .b=x, .c=as_type<int>((as_type<uint>(x) + as_type<uint>(1))), .d=nested_nonempty.i.f.d};
+  S1 const tint_symbol_12 = {.a=2, .b=42, .c=as_type<int>((as_type<uint>(42) + as_type<uint>(1))), .d=nested_nonempty.i.f.d};
   S2 const tint_symbol_13 = {.e=1, .f=tint_symbol_12};
   S1 const subexpr_nested_nonempty_with_expr = tint_symbol_13.f;
   tint_array_wrapper_1 const aosoa_empty = {.arr={}};
diff --git a/test/tint/types/function_scope_declarations.wgsl.expected.msl b/test/tint/types/function_scope_declarations.wgsl.expected.msl
index fc5a302fd2..799d28aaf0 100644
--- a/test/tint/types/function_scope_declarations.wgsl.expected.msl
+++ b/test/tint/types/function_scope_declarations.wgsl.expected.msl
@@ -10,22 +10,22 @@ struct tint_array_wrapper {
 };
 
 kernel void tint_symbol() {
-  bool bool_var = bool();
-  bool const bool_let = bool();
-  int i32_var = int();
-  int const i32_let = int();
-  uint u32_var = uint();
-  uint const u32_let = uint();
-  float f32_var = float();
-  float const f32_let = float();
-  int2 v2i32_var = int2();
-  int2 const v2i32_let = int2();
-  uint3 v3u32_var = uint3();
-  uint3 const v3u32_let = uint3();
-  float4 v4f32_var = float4();
-  float4 const v4f32_let = float4();
-  float2x3 m2x3_var = float2x3();
-  float3x4 const m3x4_let = float3x4();
+  bool bool_var = false;
+  bool const bool_let = false;
+  int i32_var = 0;
+  int const i32_let = 0;
+  uint u32_var = 0u;
+  uint const u32_let = 0u;
+  float f32_var = 0.0f;
+  float const f32_let = 0.0f;
+  int2 v2i32_var = int2(0);
+  int2 const v2i32_let = int2(0);
+  uint3 v3u32_var = uint3(0u);
+  uint3 const v3u32_let = uint3(0u);
+  float4 v4f32_var = float4(0.0f);
+  float4 const v4f32_let = float4(0.0f);
+  float2x3 m2x3_var = float2x3(float3(0.0f), float3(0.0f));
+  float3x4 const m3x4_let = float3x4(float4(0.0f), float4(0.0f), float4(0.0f));
   tint_array_wrapper arr_var = {.arr={}};
   tint_array_wrapper const arr_let = {.arr={}};
   S struct_var = {};
diff --git a/test/tint/types/function_scope_var_conversions.wgsl.expected.msl b/test/tint/types/function_scope_var_conversions.wgsl.expected.msl
index a656406724..10e5c4859d 100644
--- a/test/tint/types/function_scope_var_conversions.wgsl.expected.msl
+++ b/test/tint/types/function_scope_var_conversions.wgsl.expected.msl
@@ -2,32 +2,32 @@
 
 using namespace metal;
 void constant_with_non_constant() {
-  float a = float();
-  float2 b = float2(float(int(1)), a);
+  float a = 0.0f;
+  float2 b = float2(1.0f, a);
 }
 
 kernel void tint_symbol() {
-  bool bool_var1 = bool(123u);
-  bool bool_var2 = bool(123);
-  bool bool_var3 = bool(123.0f);
-  int i32_var1 = int(123u);
-  int i32_var2 = int(123.0f);
-  int i32_var3 = int(true);
-  uint u32_var1 = uint(123);
-  uint u32_var2 = uint(123.0f);
-  uint u32_var3 = uint(true);
-  bool3 v3bool_var1 = bool3(uint3(123u));
-  bool3 v3bool_var11 = bool3(uint3(1234u));
-  bool3 v3bool_var2 = bool3(int3(123));
-  bool3 v3bool_var3 = bool3(float3(123.0f));
-  int3 v3i32_var1 = int3(uint3(123u));
-  int3 v3i32_var2 = int3(float3(123.0f));
-  int3 v3i32_var3 = int3(bool3(true));
-  uint3 v3u32_var1 = uint3(int3(123));
-  uint3 v3u32_var2 = uint3(float3(123.0f));
-  uint3 v3u32_var3 = uint3(bool3(true));
-  bool3 v3bool_var4 = bool3(bool2(float2(123.0f)), true);
-  bool4 v4bool_var5 = bool4(bool2(float2(123.0f, 0.0f)), bool2(true, bool(float(0.0f))));
+  bool bool_var1 = true;
+  bool bool_var2 = true;
+  bool bool_var3 = true;
+  int i32_var1 = 123;
+  int i32_var2 = 123;
+  int i32_var3 = 1;
+  uint u32_var1 = 123u;
+  uint u32_var2 = 123u;
+  uint u32_var3 = 1u;
+  bool3 v3bool_var1 = bool3(true);
+  bool3 v3bool_var11 = bool3(true);
+  bool3 v3bool_var2 = bool3(true);
+  bool3 v3bool_var3 = bool3(true);
+  int3 v3i32_var1 = int3(123);
+  int3 v3i32_var2 = int3(123);
+  int3 v3i32_var3 = int3(1);
+  uint3 v3u32_var1 = uint3(123u);
+  uint3 v3u32_var2 = uint3(123u);
+  uint3 v3u32_var3 = uint3(1u);
+  bool3 v3bool_var4 = bool3(true);
+  bool4 v4bool_var5 = bool4(true, false, true, false);
   return;
 }
 
diff --git a/test/tint/types/module_scope_let.wgsl.expected.msl b/test/tint/types/module_scope_let.wgsl.expected.msl
index 547c797b9e..33ba0950b1 100644
--- a/test/tint/types/module_scope_let.wgsl.expected.msl
+++ b/test/tint/types/module_scope_let.wgsl.expected.msl
@@ -5,21 +5,21 @@ struct S {
   float a;
 };
 
-constant bool bool_let = bool();
+constant bool bool_let = false;
 
-constant int i32_let = int();
+constant int i32_let = 0;
 
-constant uint u32_let = uint();
+constant uint u32_let = 0u;
 
-constant float f32_let = float();
+constant float f32_let = 0.0f;
 
-constant int2 v2i32_let = int2();
+constant int2 v2i32_let = int2(0);
 
-constant uint3 v3u32_let = uint3();
+constant uint3 v3u32_let = uint3(0u);
 
-constant float4 v4f32_let = float4();
+constant float4 v4f32_let = float4(0.0f);
 
-constant float3x4 m3x4_let = float3x4();
+constant float3x4 m3x4_let = float3x4(float4(0.0f), float4(0.0f), float4(0.0f));
 
 struct tint_array_wrapper {
   float arr[4];
diff --git a/test/tint/types/module_scope_var.wgsl.expected.msl b/test/tint/types/module_scope_var.wgsl.expected.msl
index 4fcfa9e7ad..b4cb6cd8a5 100644
--- a/test/tint/types/module_scope_var.wgsl.expected.msl
+++ b/test/tint/types/module_scope_var.wgsl.expected.msl
@@ -20,14 +20,14 @@ kernel void tint_symbol() {
   thread float2x3 tint_symbol_10 = float2x3(0.0f);
   thread tint_array_wrapper tint_symbol_11 = {};
   thread S tint_symbol_12 = {};
-  tint_symbol_3 = bool();
-  tint_symbol_4 = int();
-  tint_symbol_5 = uint();
-  tint_symbol_6 = float();
-  tint_symbol_7 = int2();
-  tint_symbol_8 = uint3();
-  tint_symbol_9 = float4();
-  tint_symbol_10 = float2x3();
+  tint_symbol_3 = false;
+  tint_symbol_4 = 0;
+  tint_symbol_5 = 0u;
+  tint_symbol_6 = 0.0f;
+  tint_symbol_7 = int2(0);
+  tint_symbol_8 = uint3(0u);
+  tint_symbol_9 = float4(0.0f);
+  tint_symbol_10 = float2x3(float3(0.0f), float3(0.0f));
   tint_array_wrapper const tint_symbol_1 = {.arr={}};
   tint_symbol_11 = tint_symbol_1;
   S const tint_symbol_2 = {};
diff --git a/test/tint/types/module_scope_var_conversions.wgsl.expected.msl b/test/tint/types/module_scope_var_conversions.wgsl.expected.msl
index 072e9b0636..012737e158 100644
--- a/test/tint/types/module_scope_var_conversions.wgsl.expected.msl
+++ b/test/tint/types/module_scope_var_conversions.wgsl.expected.msl
@@ -2,46 +2,46 @@
 
 using namespace metal;
 kernel void tint_symbol() {
-  thread bool tint_symbol_1 = bool(1u);
-  thread bool tint_symbol_2 = bool(1);
-  thread bool tint_symbol_3 = bool(1.0f);
-  thread int tint_symbol_4 = int(1u);
-  thread int tint_symbol_5 = int(1.0f);
-  thread int tint_symbol_6 = int(true);
-  thread uint tint_symbol_7 = uint(1);
-  thread uint tint_symbol_8 = uint(1.0f);
-  thread uint tint_symbol_9 = uint(true);
-  thread bool3 tint_symbol_10 = bool3(uint3(1u));
-  thread bool3 tint_symbol_11 = bool3(int3(1));
-  thread bool3 tint_symbol_12 = bool3(float3(1.0f));
-  thread bool3 tint_symbol_13 = bool3(bool2(float2(123.0f)), true);
-  thread bool4 tint_symbol_14 = bool4(bool2(float2(123.0f, 0.0f)), bool2(true, bool(float(0.0f))));
-  thread int3 tint_symbol_15 = int3(uint3(1u));
-  thread int3 tint_symbol_16 = int3(float3(1.0f));
-  thread int3 tint_symbol_17 = int3(bool3(true));
-  thread uint3 tint_symbol_18 = uint3(int3(1));
-  thread uint3 tint_symbol_19 = uint3(float3(1.0f));
-  thread uint3 tint_symbol_20 = uint3(bool3(true));
-  tint_symbol_1 = bool();
-  tint_symbol_2 = bool();
-  tint_symbol_3 = bool();
-  tint_symbol_4 = int();
-  tint_symbol_5 = int();
-  tint_symbol_6 = int();
-  tint_symbol_7 = uint();
-  tint_symbol_8 = uint();
-  tint_symbol_9 = uint();
-  tint_symbol_10 = bool3();
-  tint_symbol_11 = bool3();
-  tint_symbol_12 = bool3();
-  tint_symbol_13 = bool3();
-  tint_symbol_14 = bool4();
-  tint_symbol_15 = int3();
-  tint_symbol_16 = int3();
-  tint_symbol_17 = int3();
-  tint_symbol_18 = uint3();
-  tint_symbol_19 = uint3();
-  tint_symbol_20 = uint3();
+  thread bool tint_symbol_1 = true;
+  thread bool tint_symbol_2 = true;
+  thread bool tint_symbol_3 = true;
+  thread int tint_symbol_4 = 1;
+  thread int tint_symbol_5 = 1;
+  thread int tint_symbol_6 = 1;
+  thread uint tint_symbol_7 = 1u;
+  thread uint tint_symbol_8 = 1u;
+  thread uint tint_symbol_9 = 1u;
+  thread bool3 tint_symbol_10 = bool3(true);
+  thread bool3 tint_symbol_11 = bool3(true);
+  thread bool3 tint_symbol_12 = bool3(true);
+  thread bool3 tint_symbol_13 = bool3(true);
+  thread bool4 tint_symbol_14 = bool4(true, false, true, false);
+  thread int3 tint_symbol_15 = int3(1);
+  thread int3 tint_symbol_16 = int3(1);
+  thread int3 tint_symbol_17 = int3(1);
+  thread uint3 tint_symbol_18 = uint3(1u);
+  thread uint3 tint_symbol_19 = uint3(1u);
+  thread uint3 tint_symbol_20 = uint3(1u);
+  tint_symbol_1 = false;
+  tint_symbol_2 = false;
+  tint_symbol_3 = false;
+  tint_symbol_4 = 0;
+  tint_symbol_5 = 0;
+  tint_symbol_6 = 0;
+  tint_symbol_7 = 0u;
+  tint_symbol_8 = 0u;
+  tint_symbol_9 = 0u;
+  tint_symbol_10 = bool3(false);
+  tint_symbol_11 = bool3(false);
+  tint_symbol_12 = bool3(false);
+  tint_symbol_13 = bool3(false);
+  tint_symbol_14 = bool4(false);
+  tint_symbol_15 = int3(0);
+  tint_symbol_16 = int3(0);
+  tint_symbol_17 = int3(0);
+  tint_symbol_18 = uint3(0u);
+  tint_symbol_19 = uint3(0u);
+  tint_symbol_20 = uint3(0u);
   return;
 }
 
diff --git a/test/tint/types/module_scope_var_initializers.wgsl.expected.msl b/test/tint/types/module_scope_var_initializers.wgsl.expected.msl
index afbc577f13..815f9fbdf1 100644
--- a/test/tint/types/module_scope_var_initializers.wgsl.expected.msl
+++ b/test/tint/types/module_scope_var_initializers.wgsl.expected.msl
@@ -10,24 +10,24 @@ struct tint_array_wrapper {
 };
 
 kernel void tint_symbol() {
-  thread bool tint_symbol_3 = bool();
-  thread int tint_symbol_4 = int();
-  thread uint tint_symbol_5 = uint();
-  thread float tint_symbol_6 = float();
-  thread int2 tint_symbol_7 = int2();
-  thread uint3 tint_symbol_8 = uint3();
-  thread float4 tint_symbol_9 = float4();
-  thread float2x3 tint_symbol_10 = float2x3();
+  thread bool tint_symbol_3 = false;
+  thread int tint_symbol_4 = 0;
+  thread uint tint_symbol_5 = 0u;
+  thread float tint_symbol_6 = 0.0f;
+  thread int2 tint_symbol_7 = int2(0);
+  thread uint3 tint_symbol_8 = uint3(0u);
+  thread float4 tint_symbol_9 = float4(0.0f);
+  thread float2x3 tint_symbol_10 = float2x3(float3(0.0f), float3(0.0f));
   thread tint_array_wrapper tint_symbol_11 = {.arr={}};
   thread S tint_symbol_12 = {};
-  tint_symbol_3 = bool();
-  tint_symbol_4 = int();
-  tint_symbol_5 = uint();
-  tint_symbol_6 = float();
-  tint_symbol_7 = int2();
-  tint_symbol_8 = uint3();
-  tint_symbol_9 = float4();
-  tint_symbol_10 = float2x3();
+  tint_symbol_3 = false;
+  tint_symbol_4 = 0;
+  tint_symbol_5 = 0u;
+  tint_symbol_6 = 0.0f;
+  tint_symbol_7 = int2(0);
+  tint_symbol_8 = uint3(0u);
+  tint_symbol_9 = float4(0.0f);
+  tint_symbol_10 = float2x3(float3(0.0f), float3(0.0f));
   tint_array_wrapper const tint_symbol_1 = {.arr={}};
   tint_symbol_11 = tint_symbol_1;
   S const tint_symbol_2 = {};
diff --git a/test/tint/types/return_types.wgsl.expected.msl b/test/tint/types/return_types.wgsl.expected.msl
index 2d5d9cb8d4..769204e8ea 100644
--- a/test/tint/types/return_types.wgsl.expected.msl
+++ b/test/tint/types/return_types.wgsl.expected.msl
@@ -6,35 +6,35 @@ struct S {
 };
 
 bool ret_bool() {
-  return bool();
+  return false;
 }
 
 int ret_i32() {
-  return int();
+  return 0;
 }
 
 uint ret_u32() {
-  return uint();
+  return 0u;
 }
 
 float ret_f32() {
-  return float();
+  return 0.0f;
 }
 
 int2 ret_v2i32() {
-  return int2();
+  return int2(0);
 }
 
 uint3 ret_v3u32() {
-  return uint3();
+  return uint3(0u);
 }
 
 float4 ret_v4f32() {
-  return float4();
+  return float4(0.0f);
 }
 
 float2x3 ret_m2x3() {
-  return float2x3();
+  return float2x3(float3(0.0f), float3(0.0f));
 }
 
 struct tint_array_wrapper {
diff --git a/test/tint/var/inferred/function.wgsl.expected.msl b/test/tint/var/inferred/function.wgsl.expected.msl
index ac84088451..8eebc86bfe 100644
--- a/test/tint/var/inferred/function.wgsl.expected.msl
+++ b/test/tint/var/inferred/function.wgsl.expected.msl
@@ -35,9 +35,9 @@ void var_decls() {
   int v1 = 1;
   uint v2 = 1u;
   float v3 = 1.0f;
-  int3 v4 = int3(1, 1, 1);
-  uint3 v5 = uint3(1u, 1u, 1u);
-  float3 v6 = float3(1.0f, 1.0f, 1.0f);
+  int3 v4 = int3(1);
+  uint3 v5 = uint3(1u);
+  float3 v6 = float3(1.0f);
   float3x3 v7 = float3x3(v6, v6, v6);
   MyStruct v8 = {.f1=1.0f};
   tint_array_wrapper v9 = {.arr={}};
@@ -54,7 +54,7 @@ struct tint_symbol_1 {
 };
 
 float4 tint_symbol_inner() {
-  return float4(0.0f, 0.0f, 0.0f, 0.0f);
+  return float4(0.0f);
 }
 
 fragment tint_symbol_1 tint_symbol() {
diff --git a/test/tint/var/initialization/workgroup/array.wgsl.expected.msl b/test/tint/var/initialization/workgroup/array.wgsl.expected.msl
index 89175b00aa..9157d88ddb 100644
--- a/test/tint/var/initialization/workgroup/array.wgsl.expected.msl
+++ b/test/tint/var/initialization/workgroup/array.wgsl.expected.msl
@@ -8,7 +8,7 @@ struct tint_array_wrapper {
 void tint_symbol_inner(uint local_invocation_index, threadgroup tint_array_wrapper* const tint_symbol_1) {
   for(uint idx = local_invocation_index; (idx < 3u); idx = (idx + 1u)) {
     uint const i = idx;
-    (*(tint_symbol_1)).arr[i] = int();
+    (*(tint_symbol_1)).arr[i] = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
 }
diff --git a/test/tint/var/initialization/workgroup/matrix.wgsl.expected.msl b/test/tint/var/initialization/workgroup/matrix.wgsl.expected.msl
index 0a507da342..348fc25805 100644
--- a/test/tint/var/initialization/workgroup/matrix.wgsl.expected.msl
+++ b/test/tint/var/initialization/workgroup/matrix.wgsl.expected.msl
@@ -7,7 +7,7 @@ struct tint_symbol_4 {
 
 void tint_symbol_inner(uint local_invocation_index, threadgroup float2x3* const tint_symbol_1) {
   {
-    *(tint_symbol_1) = float2x3();
+    *(tint_symbol_1) = float2x3(float3(0.0f), float3(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
 }
diff --git a/test/tint/var/initialization/workgroup/scalar.wgsl.expected.msl b/test/tint/var/initialization/workgroup/scalar.wgsl.expected.msl
index cbba65b25a..3829fc7306 100644
--- a/test/tint/var/initialization/workgroup/scalar.wgsl.expected.msl
+++ b/test/tint/var/initialization/workgroup/scalar.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void tint_symbol_inner(uint local_invocation_index, threadgroup int* const tint_symbol_1) {
   {
-    *(tint_symbol_1) = int();
+    *(tint_symbol_1) = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
 }
diff --git a/test/tint/var/initialization/workgroup/vector.wgsl.expected.msl b/test/tint/var/initialization/workgroup/vector.wgsl.expected.msl
index d114b14cb6..5c498045c7 100644
--- a/test/tint/var/initialization/workgroup/vector.wgsl.expected.msl
+++ b/test/tint/var/initialization/workgroup/vector.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 void tint_symbol_inner(uint local_invocation_index, threadgroup int3* const tint_symbol_1) {
   {
-    *(tint_symbol_1) = int3();
+    *(tint_symbol_1) = int3(0);
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
 }
diff --git a/test/tint/var/uses/many_workgroup_vars.wgsl.expected.msl b/test/tint/var/uses/many_workgroup_vars.wgsl.expected.msl
index 8435181bb7..fa73692385 100644
--- a/test/tint/var/uses/many_workgroup_vars.wgsl.expected.msl
+++ b/test/tint/var/uses/many_workgroup_vars.wgsl.expected.msl
@@ -106,106 +106,106 @@ struct tint_symbol_202 {
 
 void tint_symbol_inner(uint idx, threadgroup float2x2* const tint_symbol_1, threadgroup float2x2* const tint_symbol_2, threadgroup float2x2* const tint_symbol_3, threadgroup float2x2* const tint_symbol_4, threadgroup float2x2* const tint_symbol_5, threadgroup float2x2* const tint_symbol_6, threadgroup float2x2* const tint_symbol_7, threadgroup float2x2* const tint_symbol_8, threadgroup float2x2* const tint_symbol_9, threadgroup float2x2* const tint_symbol_10, threadgroup float2x2* const tint_symbol_11, threadgroup float2x2* const tint_symbol_12, threadgroup float2x2* const tint_symbol_13, threadgroup float2x2* const tint_symbol_14, threadgroup float2x2* const tint_symbol_15, threadgroup float2x2* const tint_symbol_16, threadgroup float2x2* const tint_symbol_17, threadgroup float2x2* const tint_symbol_18, threadgroup float2x2* const tint_symbol_19, threadgroup float2x2* const tint_symbol_20, threadgroup float2x2* const tint_symbol_21, threadgroup float2x2* const tint_symbol_22, threadgroup float2x2* const tint_symbol_23, threadgroup float2x2* const tint_symbol_24, threadgroup float2x2* const tint_symbol_25, threadgroup float2x2* const tint_symbol_26, threadgroup float2x2* const tint_symbol_27, threadgroup float2x2* const tint_symbol_28, threadgroup float2x2* const tint_symbol_29, threadgroup float2x2* const tint_symbol_30, threadgroup float2x2* const tint_symbol_31, threadgroup float2x2* const tint_symbol_32, threadgroup float2x2* const tint_symbol_33, threadgroup float2x2* const tint_symbol_34, threadgroup float2x2* const tint_symbol_35, threadgroup float2x2* const tint_symbol_36, threadgroup float2x2* const tint_symbol_37, threadgroup float2x2* const tint_symbol_38, threadgroup float2x2* const tint_symbol_39, threadgroup float2x2* const tint_symbol_40, threadgroup float2x2* const tint_symbol_41, threadgroup float2x2* const tint_symbol_42, threadgroup float2x2* const tint_symbol_43, threadgroup float2x2* const tint_symbol_44, threadgroup float2x2* const tint_symbol_45, threadgroup float2x2* const tint_symbol_46, threadgroup float2x2* const tint_symbol_47, threadgroup float2x2* const tint_symbol_48, threadgroup float2x2* const tint_symbol_49, threadgroup float2x2* const tint_symbol_50, threadgroup float2x2* const tint_symbol_51, threadgroup float2x2* const tint_symbol_52, threadgroup float2x2* const tint_symbol_53, threadgroup float2x2* const tint_symbol_54, threadgroup float2x2* const tint_symbol_55, threadgroup float2x2* const tint_symbol_56, threadgroup float2x2* const tint_symbol_57, threadgroup float2x2* const tint_symbol_58, threadgroup float2x2* const tint_symbol_59, threadgroup float2x2* const tint_symbol_60, threadgroup float2x2* const tint_symbol_61, threadgroup float2x2* const tint_symbol_62, threadgroup float2x2* const tint_symbol_63, threadgroup float2x2* const tint_symbol_64, threadgroup float2x2* const tint_symbol_65, threadgroup float2x2* const tint_symbol_66, threadgroup float2x2* const tint_symbol_67, threadgroup float2x2* const tint_symbol_68, threadgroup float2x2* const tint_symbol_69, threadgroup float2x2* const tint_symbol_70, threadgroup float2x2* const tint_symbol_71, threadgroup float2x2* const tint_symbol_72, threadgroup float2x2* const tint_symbol_73, threadgroup float2x2* const tint_symbol_74, threadgroup float2x2* const tint_symbol_75, threadgroup float2x2* const tint_symbol_76, threadgroup float2x2* const tint_symbol_77, threadgroup float2x2* const tint_symbol_78, threadgroup float2x2* const tint_symbol_79, threadgroup float2x2* const tint_symbol_80, threadgroup float2x2* const tint_symbol_81, threadgroup float2x2* const tint_symbol_82, threadgroup float2x2* const tint_symbol_83, threadgroup float2x2* const tint_symbol_84, threadgroup float2x2* const tint_symbol_85, threadgroup float2x2* const tint_symbol_86, threadgroup float2x2* const tint_symbol_87, threadgroup float2x2* const tint_symbol_88, threadgroup float2x2* const tint_symbol_89, threadgroup float2x2* const tint_symbol_90, threadgroup float2x2* const tint_symbol_91, threadgroup float2x2* const tint_symbol_92, threadgroup float2x2* const tint_symbol_93, threadgroup float2x2* const tint_symbol_94, threadgroup float2x2* const tint_symbol_95, threadgroup float2x2* const tint_symbol_96, threadgroup float2x2* const tint_symbol_97, threadgroup float2x2* const tint_symbol_98, threadgroup float2x2* const tint_symbol_99, threadgroup float2x2* const tint_symbol_100) {
   {
-    *(tint_symbol_1) = float2x2();
-    *(tint_symbol_2) = float2x2();
-    *(tint_symbol_3) = float2x2();
-    *(tint_symbol_4) = float2x2();
-    *(tint_symbol_5) = float2x2();
-    *(tint_symbol_6) = float2x2();
-    *(tint_symbol_7) = float2x2();
-    *(tint_symbol_8) = float2x2();
-    *(tint_symbol_9) = float2x2();
-    *(tint_symbol_10) = float2x2();
-    *(tint_symbol_11) = float2x2();
-    *(tint_symbol_12) = float2x2();
-    *(tint_symbol_13) = float2x2();
-    *(tint_symbol_14) = float2x2();
-    *(tint_symbol_15) = float2x2();
-    *(tint_symbol_16) = float2x2();
-    *(tint_symbol_17) = float2x2();
-    *(tint_symbol_18) = float2x2();
-    *(tint_symbol_19) = float2x2();
-    *(tint_symbol_20) = float2x2();
-    *(tint_symbol_21) = float2x2();
-    *(tint_symbol_22) = float2x2();
-    *(tint_symbol_23) = float2x2();
-    *(tint_symbol_24) = float2x2();
-    *(tint_symbol_25) = float2x2();
-    *(tint_symbol_26) = float2x2();
-    *(tint_symbol_27) = float2x2();
-    *(tint_symbol_28) = float2x2();
-    *(tint_symbol_29) = float2x2();
-    *(tint_symbol_30) = float2x2();
-    *(tint_symbol_31) = float2x2();
-    *(tint_symbol_32) = float2x2();
-    *(tint_symbol_33) = float2x2();
-    *(tint_symbol_34) = float2x2();
-    *(tint_symbol_35) = float2x2();
-    *(tint_symbol_36) = float2x2();
-    *(tint_symbol_37) = float2x2();
-    *(tint_symbol_38) = float2x2();
-    *(tint_symbol_39) = float2x2();
-    *(tint_symbol_40) = float2x2();
-    *(tint_symbol_41) = float2x2();
-    *(tint_symbol_42) = float2x2();
-    *(tint_symbol_43) = float2x2();
-    *(tint_symbol_44) = float2x2();
-    *(tint_symbol_45) = float2x2();
-    *(tint_symbol_46) = float2x2();
-    *(tint_symbol_47) = float2x2();
-    *(tint_symbol_48) = float2x2();
-    *(tint_symbol_49) = float2x2();
-    *(tint_symbol_50) = float2x2();
-    *(tint_symbol_51) = float2x2();
-    *(tint_symbol_52) = float2x2();
-    *(tint_symbol_53) = float2x2();
-    *(tint_symbol_54) = float2x2();
-    *(tint_symbol_55) = float2x2();
-    *(tint_symbol_56) = float2x2();
-    *(tint_symbol_57) = float2x2();
-    *(tint_symbol_58) = float2x2();
-    *(tint_symbol_59) = float2x2();
-    *(tint_symbol_60) = float2x2();
-    *(tint_symbol_61) = float2x2();
-    *(tint_symbol_62) = float2x2();
-    *(tint_symbol_63) = float2x2();
-    *(tint_symbol_64) = float2x2();
-    *(tint_symbol_65) = float2x2();
-    *(tint_symbol_66) = float2x2();
-    *(tint_symbol_67) = float2x2();
-    *(tint_symbol_68) = float2x2();
-    *(tint_symbol_69) = float2x2();
-    *(tint_symbol_70) = float2x2();
-    *(tint_symbol_71) = float2x2();
-    *(tint_symbol_72) = float2x2();
-    *(tint_symbol_73) = float2x2();
-    *(tint_symbol_74) = float2x2();
-    *(tint_symbol_75) = float2x2();
-    *(tint_symbol_76) = float2x2();
-    *(tint_symbol_77) = float2x2();
-    *(tint_symbol_78) = float2x2();
-    *(tint_symbol_79) = float2x2();
-    *(tint_symbol_80) = float2x2();
-    *(tint_symbol_81) = float2x2();
-    *(tint_symbol_82) = float2x2();
-    *(tint_symbol_83) = float2x2();
-    *(tint_symbol_84) = float2x2();
-    *(tint_symbol_85) = float2x2();
-    *(tint_symbol_86) = float2x2();
-    *(tint_symbol_87) = float2x2();
-    *(tint_symbol_88) = float2x2();
-    *(tint_symbol_89) = float2x2();
-    *(tint_symbol_90) = float2x2();
-    *(tint_symbol_91) = float2x2();
-    *(tint_symbol_92) = float2x2();
-    *(tint_symbol_93) = float2x2();
-    *(tint_symbol_94) = float2x2();
-    *(tint_symbol_95) = float2x2();
-    *(tint_symbol_96) = float2x2();
-    *(tint_symbol_97) = float2x2();
-    *(tint_symbol_98) = float2x2();
-    *(tint_symbol_99) = float2x2();
-    *(tint_symbol_100) = float2x2();
+    *(tint_symbol_1) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_2) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_3) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_4) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_5) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_6) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_7) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_8) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_9) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_10) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_11) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_12) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_13) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_14) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_15) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_16) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_17) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_18) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_19) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_20) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_21) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_22) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_23) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_24) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_25) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_26) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_27) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_28) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_29) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_30) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_31) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_32) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_33) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_34) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_35) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_36) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_37) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_38) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_39) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_40) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_41) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_42) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_43) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_44) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_45) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_46) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_47) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_48) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_49) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_50) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_51) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_52) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_53) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_54) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_55) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_56) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_57) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_58) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_59) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_60) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_61) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_62) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_63) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_64) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_65) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_66) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_67) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_68) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_69) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_70) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_71) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_72) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_73) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_74) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_75) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_76) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_77) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_78) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_79) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_80) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_81) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_82) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_83) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_84) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_85) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_86) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_87) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_88) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_89) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_90) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_91) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_92) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_93) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_94) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_95) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_96) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_97) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_98) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_99) = float2x2(float2(0.0f), float2(0.0f));
+    *(tint_symbol_100) = float2x2(float2(0.0f), float2(0.0f));
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   (*(tint_symbol_1))[0][0] = 1.0f;
diff --git a/test/tint/var/uses/workgroup.wgsl.expected.msl b/test/tint/var/uses/workgroup.wgsl.expected.msl
index 94f106ffe7..1da99299db 100644
--- a/test/tint/var/uses/workgroup.wgsl.expected.msl
+++ b/test/tint/var/uses/workgroup.wgsl.expected.msl
@@ -26,7 +26,7 @@ void outer(threadgroup int* const tint_symbol_4, threadgroup int* const tint_sym
 
 void main1_inner(uint local_invocation_index, threadgroup int* const tint_symbol_6) {
   {
-    *(tint_symbol_6) = int();
+    *(tint_symbol_6) = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   *(tint_symbol_6) = 42;
@@ -41,7 +41,7 @@ kernel void main1(uint local_invocation_index [[thread_index_in_threadgroup]]) {
 
 void main2_inner(uint local_invocation_index_1, threadgroup int* const tint_symbol_8) {
   {
-    *(tint_symbol_8) = int();
+    *(tint_symbol_8) = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   *(tint_symbol_8) = 7;
@@ -56,8 +56,8 @@ kernel void main2(uint local_invocation_index_1 [[thread_index_in_threadgroup]])
 
 void main3_inner(uint local_invocation_index_2, threadgroup int* const tint_symbol_10, threadgroup int* const tint_symbol_11) {
   {
-    *(tint_symbol_10) = int();
-    *(tint_symbol_11) = int();
+    *(tint_symbol_10) = 0;
+    *(tint_symbol_11) = 0;
   }
   threadgroup_barrier(mem_flags::mem_threadgroup);
   outer(tint_symbol_10, tint_symbol_11);