writer/hlsl: Zero initialize with (T) 0

For structures and arrays.
This behaves identically to the per-element zero-initialization, but can be significantly less verbose.

Change-Id: I380ef86f16c2b3f37a9de2820e707f368955b761
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/56764
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

src/writer/hlsl/generator_impl.cc

@@ -2508,38 +2508,13 @@ bool GeneratorImpl::EmitZeroValue(std::ostream& out, const sem::Type* type) {
         return false;
       }
     }
-  } else if (auto* str = type->As<sem::Struct>()) {
-    auto it = structure_builders_.find(str);
-    if (it != structure_builders_.end()) {
-      out << it->second << "(";
-    } else {
-      out << "{";
+  } else if (type->IsAnyOf<sem::Struct, sem::Array>()) {
+    out << "(";
+    if (!EmitType(out, type, ast::StorageClass::kNone, ast::Access::kUndefined,
+                  "")) {
+      return false;
     }
-
-    bool first = true;
-    for (auto* member : str->Members()) {
-      if (!first) {
-        out << ", ";
-      }
-      first = false;
-      if (!EmitZeroValue(out, member->Type())) {
-        return false;
-      }
-    }
-
-    out << (it != structure_builders_.end() ? ")" : "}");
-  } else if (auto* arr = type->As<sem::Array>()) {
-    out << "{";
-    auto* elem = arr->ElemType();
-    for (size_t i = 0; i < arr->Count(); i++) {
-      if (i > 0) {
-        out << ", ";
-      }
-      if (!EmitZeroValue(out, elem)) {
-        return false;
-      }
-    }
-    out << "}";
+    out << ")0";
   } else {
     diagnostics_.add_error(
         diag::System::Writer,

src/writer/hlsl/generator_impl_constructor_test.cc

@@ -233,7 +233,7 @@ TEST_F(HlslGeneratorImplTest_Constructor, EmitConstructor_Type_Struct_Empty) {
   GeneratorImpl& gen = SanitizeAndBuild();
 
   ASSERT_TRUE(gen.Generate()) << gen.error();
-  EXPECT_THAT(gen.result(), HasSubstr("{0, 0.0f, int3(0, 0, 0)}"));
+  EXPECT_THAT(gen.result(), HasSubstr("(S)0"));
 }
 
 }  // namespace

src/writer/hlsl/generator_impl_function_test.cc

@@ -784,7 +784,7 @@ struct tint_array_wrapper {
 };
 
 tint_array_wrapper my_func() {
-  const tint_array_wrapper tint_symbol = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol = {(float[5])0};
   return tint_symbol;
 }
 )"));

src/writer/hlsl/generator_impl_member_accessor_test.cc

@@ -136,7 +136,7 @@ TEST_F(HlslGeneratorImplTest_MemberAccessor, EmitExpression_MemberAccessor) {
   float mem;
 };
 
-static Data str = {0.0f};
+static Data str = (Data)0;
 
 [numthreads(1, 1, 1)]
 void test_function() {

src/writer/hlsl/generator_impl_variable_decl_statement_test.cc

@@ -61,8 +61,7 @@ TEST_F(HlslGeneratorImplTest_VariableDecl, Emit_VariableDeclStatement_Array) {
   gen.increment_indent();
 
   ASSERT_TRUE(gen.Generate()) << gen.error();
-  EXPECT_THAT(gen.result(),
-              HasSubstr("  float a[5] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f};\n"));
+  EXPECT_THAT(gen.result(), HasSubstr("  float a[5] = (float[5])0;\n"));
 }
 
 TEST_F(HlslGeneratorImplTest_VariableDecl, Emit_VariableDeclStatement_Private) {

src/writer/text_generator.h

@@ -81,7 +81,7 @@ class TextGenerator {
     ~LineWriter();
 
     /// @returns the ostringstream
-    operator std::ostream &() { return os; }
+    operator std::ostream&() { return os; }
 
     /// @param rhs the value to write to the line
     /// @returns the ostream so calls can be chained

test/array/assign_to_function_var.wgsl.expected.hlsl

@@ -27,7 +27,7 @@ tint_array_wrapper tint_symbol_4(RWByteAddressBuffer buffer, uint offset) {
   return tint_symbol_6;
 }
 
-static tint_array_wrapper src_private = {{{0}, {0}, {0}, {0}}};
+static tint_array_wrapper src_private = (tint_array_wrapper)0;
 groupshared tint_array_wrapper src_workgroup;
 cbuffer cbuffer_src_uniform : register(b0, space0) {
   uint4 src_uniform[4];
@@ -35,12 +35,12 @@ cbuffer cbuffer_src_uniform : register(b0, space0) {
 RWByteAddressBuffer src_storage : register(u1, space0);
 
 tint_array_wrapper ret_arr() {
-  const tint_array_wrapper tint_symbol_7 = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper tint_symbol_7 = {(tint_padded_array_element[4])0};
   return tint_symbol_7;
 }
 
 S ret_struct_arr() {
-  const S tint_symbol_8 = {{{{0}, {0}, {0}, {0}}}};
+  const S tint_symbol_8 = (S)0;
   return tint_symbol_8;
 }
 
@@ -55,13 +55,13 @@ struct tint_array_wrapper_1 {
 };
 
 void foo(tint_array_wrapper src_param) {
-  tint_array_wrapper src_function = {{{0}, {0}, {0}, {0}}};
-  tint_array_wrapper tint_symbol = {{{0}, {0}, {0}, {0}}};
+  tint_array_wrapper src_function = (tint_array_wrapper)0;
+  tint_array_wrapper tint_symbol = (tint_array_wrapper)0;
   const tint_array_wrapper tint_symbol_9 = {{{1}, {2}, {3}, {3}}};
   tint_symbol = tint_symbol_9;
   tint_symbol = src_param;
   tint_symbol = ret_arr();
-  const tint_array_wrapper src_let = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper src_let = {(tint_padded_array_element[4])0};
   tint_symbol = src_let;
   tint_symbol = src_function;
   tint_symbol = src_private;
@@ -69,7 +69,7 @@ void foo(tint_array_wrapper src_param) {
   tint_symbol = ret_struct_arr().arr;
   tint_symbol = tint_symbol_2(src_uniform, 0u);
   tint_symbol = tint_symbol_4(src_storage, 0u);
-  tint_array_wrapper_1 dst_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
-  tint_array_wrapper_1 src_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
+  tint_array_wrapper_1 dst_nested = (tint_array_wrapper_1)0;
+  tint_array_wrapper_1 src_nested = (tint_array_wrapper_1)0;
   dst_nested = src_nested;
 }

test/array/assign_to_private_var.wgsl.expected.hlsl

@@ -27,13 +27,13 @@ tint_array_wrapper tint_symbol_4(RWByteAddressBuffer buffer, uint offset) {
   return tint_symbol_6;
 }
 
-static tint_array_wrapper src_private = {{{0}, {0}, {0}, {0}}};
+static tint_array_wrapper src_private = (tint_array_wrapper)0;
 groupshared tint_array_wrapper src_workgroup;
 cbuffer cbuffer_src_uniform : register(b0, space0) {
   uint4 src_uniform[4];
 };
 RWByteAddressBuffer src_storage : register(u1, space0);
-static tint_array_wrapper tint_symbol = {{{0}, {0}, {0}, {0}}};
+static tint_array_wrapper tint_symbol = (tint_array_wrapper)0;
 
 struct tint_array_wrapper_3 {
   int arr[2];
@@ -45,25 +45,25 @@ struct tint_array_wrapper_1 {
   tint_array_wrapper_2 arr[4];
 };
 
-static tint_array_wrapper_1 dst_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
+static tint_array_wrapper_1 dst_nested = (tint_array_wrapper_1)0;
 
 tint_array_wrapper ret_arr() {
-  const tint_array_wrapper tint_symbol_7 = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper tint_symbol_7 = {(tint_padded_array_element[4])0};
   return tint_symbol_7;
 }
 
 S ret_struct_arr() {
-  const S tint_symbol_8 = {{{{0}, {0}, {0}, {0}}}};
+  const S tint_symbol_8 = (S)0;
   return tint_symbol_8;
 }
 
 void foo(tint_array_wrapper src_param) {
-  tint_array_wrapper src_function = {{{0}, {0}, {0}, {0}}};
+  tint_array_wrapper src_function = (tint_array_wrapper)0;
   const tint_array_wrapper tint_symbol_9 = {{{1}, {2}, {3}, {3}}};
   tint_symbol = tint_symbol_9;
   tint_symbol = src_param;
   tint_symbol = ret_arr();
-  const tint_array_wrapper src_let = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper src_let = {(tint_padded_array_element[4])0};
   tint_symbol = src_let;
   tint_symbol = src_function;
   tint_symbol = src_private;
@@ -71,6 +71,6 @@ void foo(tint_array_wrapper src_param) {
   tint_symbol = ret_struct_arr().arr;
   tint_symbol = tint_symbol_2(src_uniform, 0u);
   tint_symbol = tint_symbol_4(src_storage, 0u);
-  tint_array_wrapper_1 src_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
+  tint_array_wrapper_1 src_nested = (tint_array_wrapper_1)0;
   dst_nested = src_nested;
 }

test/array/assign_to_storage_var.wgsl.expected.hlsl

@@ -62,7 +62,7 @@ void tint_symbol_10(RWByteAddressBuffer buffer, uint offset, tint_array_wrapper_
   tint_symbol_9(buffer, (offset + 72u), value.arr[3u]);
 }
 
-static tint_array_wrapper src_private = {{{0}, {0}, {0}, {0}}};
+static tint_array_wrapper src_private = (tint_array_wrapper)0;
 groupshared tint_array_wrapper src_workgroup;
 cbuffer cbuffer_src_uniform : register(b0, space0) {
   uint4 src_uniform[4];
@@ -72,22 +72,22 @@ RWByteAddressBuffer tint_symbol : register(u2, space0);
 RWByteAddressBuffer dst_nested : register(u3, space0);
 
 tint_array_wrapper ret_arr() {
-  const tint_array_wrapper tint_symbol_13 = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper tint_symbol_13 = {(tint_padded_array_element[4])0};
   return tint_symbol_13;
 }
 
 S ret_struct_arr() {
-  const S tint_symbol_14 = {{{{0}, {0}, {0}, {0}}}};
+  const S tint_symbol_14 = (S)0;
   return tint_symbol_14;
 }
 
 void foo(tint_array_wrapper src_param) {
-  tint_array_wrapper src_function = {{{0}, {0}, {0}, {0}}};
+  tint_array_wrapper src_function = (tint_array_wrapper)0;
   const tint_array_wrapper tint_symbol_15 = {{{1}, {2}, {3}, {3}}};
   tint_symbol_6(tint_symbol, 0u, tint_symbol_15);
   tint_symbol_6(tint_symbol, 0u, src_param);
   tint_symbol_6(tint_symbol, 0u, ret_arr());
-  const tint_array_wrapper src_let = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper src_let = {(tint_padded_array_element[4])0};
   tint_symbol_6(tint_symbol, 0u, src_let);
   tint_symbol_6(tint_symbol, 0u, src_function);
   tint_symbol_6(tint_symbol, 0u, src_private);
@@ -95,6 +95,6 @@ void foo(tint_array_wrapper src_param) {
   tint_symbol_6(tint_symbol, 0u, ret_struct_arr().arr);
   tint_symbol_6(tint_symbol, 0u, tint_symbol_2(src_uniform, 0u));
   tint_symbol_6(tint_symbol, 0u, tint_symbol_4(src_storage, 0u));
-  tint_array_wrapper_1 src_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
+  tint_array_wrapper_1 src_nested = (tint_array_wrapper_1)0;
   tint_symbol_10(dst_nested, 0u, src_nested);
 }

test/array/assign_to_subexpr.wgsl.expected.hlsl

@@ -14,10 +14,10 @@ struct tint_array_wrapper_1 {
 };
 
 void foo() {
-  const tint_array_wrapper src = {{0, 0, 0, 0}};
-  tint_array_wrapper tint_symbol = {{0, 0, 0, 0}};
-  S dst_struct = {{{0, 0, 0, 0}}};
-  tint_array_wrapper_1 dst_array = {{{{0, 0, 0, 0}}, {{0, 0, 0, 0}}}};
+  const tint_array_wrapper src = {(int[4])0};
+  tint_array_wrapper tint_symbol = (tint_array_wrapper)0;
+  S dst_struct = (S)0;
+  tint_array_wrapper_1 dst_array = (tint_array_wrapper_1)0;
   dst_struct.arr = src;
   dst_array.arr[1] = src;
   tint_symbol = src;

test/array/assign_to_workgroup_var.wgsl.expected.hlsl

@@ -27,7 +27,7 @@ tint_array_wrapper tint_symbol_4(RWByteAddressBuffer buffer, uint offset) {
   return tint_symbol_6;
 }
 
-static tint_array_wrapper src_private = {{{0}, {0}, {0}, {0}}};
+static tint_array_wrapper src_private = (tint_array_wrapper)0;
 groupshared tint_array_wrapper src_workgroup;
 cbuffer cbuffer_src_uniform : register(b0, space0) {
   uint4 src_uniform[4];
@@ -48,22 +48,22 @@ struct tint_array_wrapper_1 {
 groupshared tint_array_wrapper_1 dst_nested;
 
 tint_array_wrapper ret_arr() {
-  const tint_array_wrapper tint_symbol_7 = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper tint_symbol_7 = {(tint_padded_array_element[4])0};
   return tint_symbol_7;
 }
 
 S ret_struct_arr() {
-  const S tint_symbol_8 = {{{{0}, {0}, {0}, {0}}}};
+  const S tint_symbol_8 = (S)0;
   return tint_symbol_8;
 }
 
 void foo(tint_array_wrapper src_param) {
-  tint_array_wrapper src_function = {{{0}, {0}, {0}, {0}}};
+  tint_array_wrapper src_function = (tint_array_wrapper)0;
   const tint_array_wrapper tint_symbol_9 = {{{1}, {2}, {3}, {3}}};
   tint_symbol = tint_symbol_9;
   tint_symbol = src_param;
   tint_symbol = ret_arr();
-  const tint_array_wrapper src_let = {{{0}, {0}, {0}, {0}}};
+  const tint_array_wrapper src_let = {(tint_padded_array_element[4])0};
   tint_symbol = src_let;
   tint_symbol = src_function;
   tint_symbol = src_private;
@@ -71,6 +71,6 @@ void foo(tint_array_wrapper src_param) {
   tint_symbol = ret_struct_arr().arr;
   tint_symbol = tint_symbol_2(src_uniform, 0u);
   tint_symbol = tint_symbol_4(src_storage, 0u);
-  tint_array_wrapper_1 src_nested = {{{{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}, {{{{0, 0}}, {{0, 0}}, {{0, 0}}}}}};
+  tint_array_wrapper_1 src_nested = (tint_array_wrapper_1)0;
   dst_nested = src_nested;
 }

test/array/function_parameter.wgsl.expected.hlsl

@@ -24,9 +24,9 @@ float f3(tint_array_wrapper_2 a) {
 
 [numthreads(1, 1, 1)]
 void main() {
-  const tint_array_wrapper a1 = {{0.0f, 0.0f, 0.0f, 0.0f}};
-  const tint_array_wrapper_1 a2 = {{{{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}}};
-  const tint_array_wrapper_2 a3 = {{{{{{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}}}, {{{{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}, {{0.0f, 0.0f, 0.0f, 0.0f}}}}}};
+  const tint_array_wrapper a1 = {(float[4])0};
+  const tint_array_wrapper_1 a2 = {(tint_array_wrapper[3])0};
+  const tint_array_wrapper_2 a3 = {(tint_array_wrapper_1[2])0};
   const float v1 = f1(a1);
   const float v2 = f2(a2);
   const float v3 = f3(a3);

test/array/function_return_type.wgsl.expected.hlsl

@@ -3,7 +3,7 @@ struct tint_array_wrapper {
 };
 
 tint_array_wrapper f1() {
-  const tint_array_wrapper tint_symbol = {{0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol = {(float[4])0};
   return tint_symbol;
 }
 

test/array/type_constructor.wgsl.expected.hlsl

@@ -14,10 +14,10 @@ struct tint_array_wrapper_3 {
 [numthreads(1, 1, 1)]
 void main() {
   const int x = 42;
-  const tint_array_wrapper empty = {{0, 0, 0, 0}};
+  const tint_array_wrapper empty = {(int[4])0};
   const tint_array_wrapper nonempty = {{1, 2, 3, 4}};
   const tint_array_wrapper nonempty_with_expr = {{1, x, (x + 1), nonempty.arr[3]}};
-  const tint_array_wrapper_1 nested_empty = {{{{{{0, 0, 0, 0}}, {{0, 0, 0, 0}}, {{0, 0, 0, 0}}}}, {{{{0, 0, 0, 0}}, {{0, 0, 0, 0}}, {{0, 0, 0, 0}}}}}};
+  const tint_array_wrapper_1 nested_empty = {(tint_array_wrapper_2[2])0};
   const tint_array_wrapper tint_symbol = {{1, 2, 3, 4}};
   const tint_array_wrapper tint_symbol_1 = {{5, 6, 7, 8}};
   const tint_array_wrapper tint_symbol_2 = {{9, 10, 11, 12}};
@@ -31,13 +31,13 @@ void main() {
   const tint_array_wrapper tint_symbol_9 = {{5, 6, nonempty.arr[2], (nonempty.arr[3] + 1)}};
   const tint_array_wrapper_2 tint_symbol_10 = {{tint_symbol_8, tint_symbol_9, nonempty}};
   const tint_array_wrapper_1 nested_nonempty_with_expr = {{tint_symbol_10, nested_nonempty.arr[1]}};
-  const tint_array_wrapper tint_symbol_11 = {{0, 0, 0, 0}};
+  const tint_array_wrapper tint_symbol_11 = {(int[4])0};
   const int subexpr_empty = tint_symbol_11.arr[1];
   const tint_array_wrapper tint_symbol_12 = {{1, 2, 3, 4}};
   const int subexpr_nonempty = tint_symbol_12.arr[2];
   const tint_array_wrapper tint_symbol_13 = {{1, x, (x + 1), nonempty.arr[3]}};
   const int subexpr_nonempty_with_expr = tint_symbol_13.arr[2];
-  const tint_array_wrapper_3 tint_symbol_14 = {{{{0, 0, 0, 0}}, {{0, 0, 0, 0}}}};
+  const tint_array_wrapper_3 tint_symbol_14 = {(tint_array_wrapper[2])0};
   const tint_array_wrapper subexpr_nested_empty = tint_symbol_14.arr[1];
   const tint_array_wrapper tint_symbol_15 = {{1, 2, 3, 4}};
   const tint_array_wrapper tint_symbol_16 = {{5, 6, 7, 8}};

test/bug/dawn/947.wgsl.expected.hlsl

@@ -20,7 +20,7 @@ struct tint_array_wrapper {
 tint_symbol_2 vs_main(tint_symbol_1 tint_symbol) {
   const uint VertexIndex = tint_symbol.VertexIndex;
   tint_array_wrapper texcoord = {{float2(-0.5f, 0.0f), float2(1.5f, 0.0f), float2(0.5f, 2.0f)}};
-  VertexOutputs output = {float2(0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  VertexOutputs output = (VertexOutputs)0;
   output.position = float4(((texcoord.arr[VertexIndex] * 2.0f) - float2(1.0f, 1.0f)), 0.0f, 1.0f);
   const int scalar_offset = (4u) / 4;
   bool flipY = (asfloat(uniforms[scalar_offset / 4][scalar_offset % 4]) < 0.0f);

test/bug/tint/403.wgsl.expected.hlsl

@@ -33,7 +33,7 @@ struct tint_array_wrapper {
 
 tint_symbol_2 main(tint_symbol_1 tint_symbol) {
   const uint gl_VertexIndex = tint_symbol.gl_VertexIndex;
-  tint_array_wrapper indexable = {{float2(0.0f, 0.0f), float2(0.0f, 0.0f), float2(0.0f, 0.0f)}};
+  tint_array_wrapper indexable = (tint_array_wrapper)0;
   const float2x2 x_23 = tint_symbol_4(x_20, 0u);
   const float2x2 x_28 = tint_symbol_6(x_26, 0u);
   const uint x_46 = gl_VertexIndex;

test/bug/tint/749.spvasm.expected.hlsl

@@ -5,7 +5,7 @@ struct QuicksortObject {
   tint_array_wrapper numbers;
 };
 
-static QuicksortObject obj = {{{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}};
+static QuicksortObject obj = (QuicksortObject)0;
 static float4 gl_FragCoord = float4(0.0f, 0.0f, 0.0f, 0.0f);
 cbuffer cbuffer_x_188 : register(b0, space0) {
   uint4 x_188[1];
@@ -363,7 +363,7 @@ void quicksort_() {
   int p = 0;
   int l_1 = 0;
   int top = 0;
-  tint_array_wrapper stack = {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};
+  tint_array_wrapper stack = (tint_array_wrapper)0;
   int param_5 = 0;
   l_1 = 0;
   const int x_1007 = param_5;

test/bug/tint/782.wgsl.expected.hlsl

@@ -8,7 +8,7 @@ struct tint_array_wrapper {
 };
 
 void foo() {
-  tint_array_wrapper tint_symbol = {{0, 0}};
-  tint_array_wrapper implict = {{0, 0}};
+  tint_array_wrapper tint_symbol = (tint_array_wrapper)0;
+  tint_array_wrapper implict = (tint_array_wrapper)0;
   implict = tint_symbol;
 }

test/bug/tint/824.wgsl.expected.hlsl

@@ -22,7 +22,7 @@ tint_symbol_2 main(tint_symbol_1 tint_symbol) {
   const uint InstanceIndex = tint_symbol.InstanceIndex;
   tint_array_wrapper zv = {{float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
   const float z = zv.arr[InstanceIndex].x;
-  Output output = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Output output = (Output)0;
   output.Position = float4(0.5f, 0.5f, z, 1.0f);
   tint_array_wrapper_1 colors = {{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)}};
   output.color = colors.arr[InstanceIndex];

test/bug/tint/870.spvasm.expected.hlsl

@@ -10,7 +10,7 @@ tint_array_wrapper tint_symbol_1(ByteAddressBuffer buffer, uint offset) {
 ByteAddressBuffer sspp962805860buildInformation : register(t2, space0);
 
 void main_1() {
-  tint_array_wrapper orientation = {{0, 0, 0, 0, 0, 0}};
+  tint_array_wrapper orientation = (tint_array_wrapper)0;
   const tint_array_wrapper x_23 = tint_symbol_1(sspp962805860buildInformation, 36u);
   orientation.arr[0] = x_23.arr[0u];
   orientation.arr[1] = x_23.arr[1u];

test/bug/tint/922.wgsl.expected.hlsl

@@ -63,7 +63,7 @@ static float2 v_TexCoord = float2(0.0f, 0.0f);
 static float4 gl_Position = float4(0.0f, 0.0f, 0.0f, 0.0f);
 
 float3 Mat4x3GetCol0_(Mat4x3_ m) {
-  Mat4x3_ m1 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m1 = (Mat4x3_)0;
   m1 = m;
   const Mat4x3_ _e2 = m1;
   const Mat4x3_ _e5 = m1;
@@ -72,7 +72,7 @@ float3 Mat4x3GetCol0_(Mat4x3_ m) {
 }
 
 float3 Mat4x3GetCol1_(Mat4x3_ m2) {
-  Mat4x3_ m3 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m3 = (Mat4x3_)0;
   m3 = m2;
   const Mat4x3_ _e2 = m3;
   const Mat4x3_ _e5 = m3;
@@ -81,7 +81,7 @@ float3 Mat4x3GetCol1_(Mat4x3_ m2) {
 }
 
 float3 Mat4x3GetCol2_(Mat4x3_ m4) {
-  Mat4x3_ m5 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m5 = (Mat4x3_)0;
   m5 = m4;
   const Mat4x3_ _e2 = m5;
   const Mat4x3_ _e5 = m5;
@@ -90,7 +90,7 @@ float3 Mat4x3GetCol2_(Mat4x3_ m4) {
 }
 
 float3 Mat4x3GetCol3_(Mat4x3_ m6) {
-  Mat4x3_ m7 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m7 = (Mat4x3_)0;
   m7 = m6;
   const Mat4x3_ _e2 = m7;
   const Mat4x3_ _e5 = m7;
@@ -99,7 +99,7 @@ float3 Mat4x3GetCol3_(Mat4x3_ m6) {
 }
 
 float4 Mul(Mat4x4_ m8, float4 v) {
-  Mat4x4_ m9 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x4_ m9 = (Mat4x4_)0;
   float4 v1 = float4(0.0f, 0.0f, 0.0f, 0.0f);
   m9 = m8;
   v1 = v;
@@ -115,7 +115,7 @@ float4 Mul(Mat4x4_ m8, float4 v) {
 }
 
 float3 Mul1(Mat4x3_ m10, float4 v2) {
-  Mat4x3_ m11 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m11 = (Mat4x3_)0;
   float4 v3 = float4(0.0f, 0.0f, 0.0f, 0.0f);
   m11 = m10;
   v3 = v2;
@@ -129,7 +129,7 @@ float3 Mul1(Mat4x3_ m10, float4 v2) {
 }
 
 float2 Mul2(Mat4x2_ m12, float4 v4) {
-  Mat4x2_ m13 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x2_ m13 = (Mat4x2_)0;
   float4 v5 = float4(0.0f, 0.0f, 0.0f, 0.0f);
   m13 = m12;
   v5 = v4;
@@ -142,7 +142,7 @@ float2 Mul2(Mat4x2_ m12, float4 v4) {
 
 float4 Mul3(float3 v6, Mat4x3_ m14) {
   float3 v7 = float3(0.0f, 0.0f, 0.0f);
-  Mat4x3_ m15 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m15 = (Mat4x3_)0;
   v7 = v6;
   m15 = m14;
   const Mat4x3_ _e5 = m15;
@@ -162,7 +162,7 @@ float4 Mul3(float3 v6, Mat4x3_ m14) {
 
 Mat4x4_ _Mat4x4_(float n) {
   float n1 = 0.0f;
-  Mat4x4_ o = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x4_ o = (Mat4x4_)0;
   n1 = n;
   const float _e4 = n1;
   o.mx = float4(_e4, 0.0f, 0.0f, 0.0f);
@@ -177,8 +177,8 @@ Mat4x4_ _Mat4x4_(float n) {
 }
 
 Mat4x4_ _Mat4x4_1(Mat4x3_ m16) {
-  Mat4x3_ m17 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
-  Mat4x4_ o1 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ m17 = (Mat4x3_)0;
+  Mat4x4_ o1 = (Mat4x4_)0;
   m17 = m16;
   const Mat4x4_ _e4 = _Mat4x4_(1.0f);
   o1 = _e4;
@@ -193,8 +193,8 @@ Mat4x4_ _Mat4x4_1(Mat4x3_ m16) {
 }
 
 Mat4x4_ _Mat4x4_2(Mat4x2_ m18) {
-  Mat4x2_ m19 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
-  Mat4x4_ o2 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x2_ m19 = (Mat4x2_)0;
+  Mat4x4_ o2 = (Mat4x4_)0;
   m19 = m18;
   const Mat4x4_ _e4 = _Mat4x4_(1.0f);
   o2 = _e4;
@@ -208,7 +208,7 @@ Mat4x4_ _Mat4x4_2(Mat4x2_ m18) {
 
 Mat4x3_ _Mat4x3_(float n2) {
   float n3 = 0.0f;
-  Mat4x3_ o3 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ o3 = (Mat4x3_)0;
   n3 = n2;
   const float _e4 = n3;
   o3.mx = float4(_e4, 0.0f, 0.0f, 0.0f);
@@ -221,8 +221,8 @@ Mat4x3_ _Mat4x3_(float n2) {
 }
 
 Mat4x3_ _Mat4x3_1(Mat4x4_ m20) {
-  Mat4x4_ m21 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
-  Mat4x3_ o4 = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x4_ m21 = (Mat4x4_)0;
+  Mat4x3_ o4 = (Mat4x3_)0;
   m21 = m20;
   const Mat4x4_ _e4 = m21;
   o4.mx = _e4.mx;
@@ -235,7 +235,7 @@ Mat4x3_ _Mat4x3_1(Mat4x4_ m20) {
 }
 
 void main1() {
-  Mat4x3_ t_PosMtx = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  Mat4x3_ t_PosMtx = (Mat4x3_)0;
   float2 t_TexSpaceCoord = float2(0.0f, 0.0f);
   const float _e15 = a_PosMtxIdx1;
   const Mat4x3_ _e18 = tint_symbol_5(global2, (48u * uint(int(_e15))));

test/expressions/zero_init/array/bool.wgsl.expected.hlsl

@@ -8,5 +8,5 @@ struct tint_array_wrapper {
 };
 
 void f() {
-  tint_array_wrapper v = {{false, false, false, false}};
+  tint_array_wrapper v = {(bool[4])0};
 }

test/expressions/zero_init/array/f32.wgsl.expected.hlsl

@@ -8,5 +8,5 @@ struct tint_array_wrapper {
 };
 
 void f() {
-  tint_array_wrapper v = {{0.0f, 0.0f, 0.0f, 0.0f}};
+  tint_array_wrapper v = {(float[4])0};
 }

test/expressions/zero_init/array/i32.wgsl.expected.hlsl

@@ -8,5 +8,5 @@ struct tint_array_wrapper {
 };
 
 void f() {
-  tint_array_wrapper v = {{0, 0, 0, 0}};
+  tint_array_wrapper v = {(int[4])0};
 }

test/expressions/zero_init/array/struct.wgsl.expected.hlsl

@@ -14,5 +14,5 @@ struct tint_array_wrapper {
 };
 
 void f() {
-  tint_array_wrapper v = {{{0, 0u, 0.0f, false}, {0, 0u, 0.0f, false}, {0, 0u, 0.0f, false}, {0, 0u, 0.0f, false}}};
+  tint_array_wrapper v = {(S[4])0};
 }

test/expressions/zero_init/array/u32.wgsl.expected.hlsl

@@ -8,5 +8,5 @@ struct tint_array_wrapper {
 };
 
 void f() {
-  tint_array_wrapper v = {{0u, 0u, 0u, 0u}};
+  tint_array_wrapper v = {(uint[4])0};
 }

test/expressions/zero_init/struct/array.wgsl.expected.hlsl

@@ -11,5 +11,5 @@ struct S {
 };
 
 void f() {
-  S v = {{{0.0f, 0.0f, 0.0f, 0.0f}}};
+  S v = (S)0;
 }

test/expressions/zero_init/struct/scalar.wgsl.expected.hlsl

@@ -11,5 +11,5 @@ struct S {
 };
 
 void f() {
-  S v = {0, 0u, 0.0f, false};
+  S v = (S)0;
 }

test/ptr_ref/load/global/struct_field.spvasm.expected.hlsl

@@ -2,7 +2,7 @@ struct S {
   int i;
 };
 
-static S V = {0};
+static S V = (S)0;
 
 void main_1() {
   int i = 0;

test/ptr_ref/load/global/struct_field.wgsl.expected.hlsl

@@ -2,7 +2,7 @@ struct S {
   int i;
 };
 
-static S V = {0};
+static S V = (S)0;
 
 [numthreads(1, 1, 1)]
 void main() {

test/ptr_ref/load/local/struct_field.spvasm.expected.hlsl

@@ -4,7 +4,7 @@ struct S {
 
 void main_1() {
   int i = 0;
-  S V = {0};
+  S V = (S)0;
   const int x_14 = V.i;
   i = x_14;
   return;

test/ptr_ref/load/local/struct_field.wgsl.expected.hlsl

@@ -4,7 +4,7 @@ struct S {
 
 [numthreads(1, 1, 1)]
 void main() {
-  S V = {0};
+  S V = (S)0;
   int i = V.i;
   return;
 }

test/ptr_ref/store/global/struct_field.spvasm.expected.hlsl

@@ -2,7 +2,7 @@ struct S {
   int i;
 };
 
-static S V = {0};
+static S V = (S)0;
 
 void main_1() {
   V.i = 5;

test/ptr_ref/store/local/struct_field.spvasm.expected.hlsl

@@ -3,7 +3,7 @@ struct S {
 };
 
 void main_1() {
-  S V = {0};
+  S V = (S)0;
   V.i = 5;
   return;
 }

test/samples/cube.wgsl.expected.hlsl

@@ -29,7 +29,7 @@ struct tint_symbol_2 {
 
 tint_symbol_2 vtx_main(tint_symbol_1 tint_symbol) {
   const VertexInput input = {tint_symbol.cur_position, tint_symbol.color};
-  VertexOutput output = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  VertexOutput output = (VertexOutput)0;
   output.Position = mul(input.cur_position, tint_symbol_7(uniforms, 0u));
   output.vtxFragColor = input.color;
   const tint_symbol_2 tint_symbol_8 = {output.vtxFragColor, output.Position};

test/shader_io/interpolate_integers.wgsl.expected.hlsl

@@ -14,7 +14,7 @@ struct tint_symbol {
 };
 
 tint_symbol vert_main() {
-  const Interface tint_symbol_1 = {0, 0u, int4(0, 0, 0, 0), uint4(0u, 0u, 0u, 0u), float4(0.0f, 0.0f, 0.0f, 0.0f)};
+  const Interface tint_symbol_1 = (Interface)0;
   const tint_symbol tint_symbol_5 = {tint_symbol_1.i, tint_symbol_1.u, tint_symbol_1.vi, tint_symbol_1.vu, tint_symbol_1.pos};
   return tint_symbol_5;
 }

test/shader_io/interpolate_return_struct.wgsl.expected.hlsl

@@ -22,7 +22,7 @@ struct tint_symbol {
 };
 
 tint_symbol main() {
-  const Out tint_symbol_1 = {float4(0.0f, 0.0f, 0.0f, 0.0f), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
+  const Out tint_symbol_1 = (Out)0;
   const tint_symbol tint_symbol_2 = {tint_symbol_1.none, tint_symbol_1.flat, tint_symbol_1.perspective_center, tint_symbol_1.perspective_centroid, tint_symbol_1.perspective_sample, tint_symbol_1.linear_center, tint_symbol_1.linear_centroid, tint_symbol_1.linear_sample, tint_symbol_1.pos};
   return tint_symbol_2;
 }

test/struct/type_constructor.wgsl.expected.hlsl

@@ -26,10 +26,10 @@ struct tint_array_wrapper_1 {
 [numthreads(1, 1, 1)]
 void main() {
   const int x = 42;
-  const S1 empty = {0, 0, 0, 0};
+  const S1 empty = (S1)0;
   const S1 nonempty = {1, 2, 3, 4};
   const S1 nonempty_with_expr = {1, x, (x + 1), nonempty.d};
-  const S3 nested_empty = {0, {0, 0, 0, 0}, {0, {0, 0, 0, 0}}};
+  const S3 nested_empty = (S3)0;
   const S1 tint_symbol = {2, 3, 4, 5};
   const S1 tint_symbol_1 = {7, 8, 9, 10};
   const S2 tint_symbol_2 = {6, tint_symbol_1};
@@ -37,13 +37,13 @@ void main() {
   const S1 tint_symbol_3 = {2, x, (x + 1), nested_nonempty.i.f.d};
   const S2 tint_symbol_4 = {6, nonempty};
   const S3 nested_nonempty_with_expr = {1, tint_symbol_3, tint_symbol_4};
-  const S1 tint_symbol_5 = {0, 0, 0, 0};
+  const S1 tint_symbol_5 = (S1)0;
   const int subexpr_empty = tint_symbol_5.a;
   const S1 tint_symbol_6 = {1, 2, 3, 4};
   const int subexpr_nonempty = tint_symbol_6.b;
   const S1 tint_symbol_7 = {1, x, (x + 1), nonempty.d};
   const int subexpr_nonempty_with_expr = tint_symbol_7.c;
-  const S2 tint_symbol_8 = {0, {0, 0, 0, 0}};
+  const S2 tint_symbol_8 = (S2)0;
   const S1 subexpr_nested_empty = tint_symbol_8.f;
   const S1 tint_symbol_9 = {2, 3, 4, 5};
   const S2 tint_symbol_10 = {1, tint_symbol_9};
@@ -51,7 +51,7 @@ void main() {
   const S1 tint_symbol_11 = {2, x, (x + 1), nested_nonempty.i.f.d};
   const S2 tint_symbol_12 = {1, tint_symbol_11};
   const S1 subexpr_nested_nonempty_with_expr = tint_symbol_12.f;
-  const tint_array_wrapper_1 aosoa_empty = {{{{{0, 0}}}, {{{0, 0}}}}};
+  const tint_array_wrapper_1 aosoa_empty = {(T[2])0};
   const tint_array_wrapper tint_symbol_13 = {{1, 2}};
   const T tint_symbol_14 = {tint_symbol_13};
   const tint_array_wrapper tint_symbol_15 = {{3, 4}};

test/types/function_scope_declarations.wgsl.expected.hlsl

@@ -23,9 +23,9 @@ void main() {
   const float4 v4f32_let = float4(0.0f, 0.0f, 0.0f, 0.0f);
   float2x3 m2x3_var = float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
   const float3x4 m3x4_let = float3x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  tint_array_wrapper arr_var = {{0.0f, 0.0f, 0.0f, 0.0f}};
-  const tint_array_wrapper arr_let = {{0.0f, 0.0f, 0.0f, 0.0f}};
-  S struct_var = {0.0f};
-  const S struct_let = {0.0f};
+  tint_array_wrapper arr_var = {(float[4])0};
+  const tint_array_wrapper arr_let = {(float[4])0};
+  S struct_var = (S)0;
+  const S struct_let = (S)0;
   return;
 }

test/types/module_scope_let.wgsl.expected.hlsl

@@ -15,8 +15,8 @@ struct tint_array_wrapper {
   float arr[4];
 };
 
-static const tint_array_wrapper arr_let = {{0.0f, 0.0f, 0.0f, 0.0f}};
-static const S struct_let = {0.0f};
+static const tint_array_wrapper arr_let = {(float[4])0};
+static const S struct_let = (S)0;
 
 [numthreads(1, 1, 1)]
 void main() {

test/types/module_scope_var.wgsl.expected.hlsl

@@ -15,8 +15,8 @@ struct tint_array_wrapper {
   float arr[4];
 };
 
-static tint_array_wrapper arr_var = {{0.0f, 0.0f, 0.0f, 0.0f}};
-static S struct_var = {0.0f};
+static tint_array_wrapper arr_var = (tint_array_wrapper)0;
+static S struct_var = (S)0;
 
 [numthreads(1, 1, 1)]
 void main() {
@@ -28,9 +28,9 @@ void main() {
   v3u32_var = uint3(0u, 0u, 0u);
   v4f32_var = float4(0.0f, 0.0f, 0.0f, 0.0f);
   m2x3_var = float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  const tint_array_wrapper tint_symbol = {{0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol = {(float[4])0};
   arr_var = tint_symbol;
-  const S tint_symbol_1 = {0.0f};
+  const S tint_symbol_1 = (S)0;
   struct_var = tint_symbol_1;
   return;
 }

test/types/module_scope_var_initializers.wgsl.expected.hlsl

@@ -15,8 +15,8 @@ struct tint_array_wrapper {
   float arr[4];
 };
 
-static tint_array_wrapper arr_var = {{0.0f, 0.0f, 0.0f, 0.0f}};
-static S struct_var = {0.0f};
+static tint_array_wrapper arr_var = {(float[4])0};
+static S struct_var = (S)0;
 
 [numthreads(1, 1, 1)]
 void main() {
@@ -28,9 +28,9 @@ void main() {
   v3u32_var = uint3(0u, 0u, 0u);
   v4f32_var = float4(0.0f, 0.0f, 0.0f, 0.0f);
   m2x3_var = float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
-  const tint_array_wrapper tint_symbol = {{0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol = {(float[4])0};
   arr_var = tint_symbol;
-  const S tint_symbol_1 = {0.0f};
+  const S tint_symbol_1 = (S)0;
   struct_var = tint_symbol_1;
   return;
 }

test/types/return_types.wgsl.expected.hlsl

@@ -39,12 +39,12 @@ struct tint_array_wrapper {
 };
 
 tint_array_wrapper ret_arr() {
-  const tint_array_wrapper tint_symbol = {{0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol = {(float[4])0};
   return tint_symbol;
 }
 
 S ret_struct() {
-  const S tint_symbol_1 = {0.0f};
+  const S tint_symbol_1 = (S)0;
   return tint_symbol_1;
 }
 

test/types/struct_members.wgsl.expected.hlsl

@@ -19,6 +19,6 @@ struct S {
 
 [numthreads(1, 1, 1)]
 void main() {
-  const S s = {false, 0, 0u, 0.0f, int2(0, 0), uint3(0u, 0u, 0u), float4(0.0f, 0.0f, 0.0f, 0.0f), float2x3(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f), {{0.0f, 0.0f, 0.0f, 0.0f}}, {0.0f}};
+  const S s = (S)0;
   return;
 }

test/var/inferred/function-let.wgsl.expected.hlsl

@@ -18,12 +18,12 @@ float ret_f32() {
 }
 
 MyStruct ret_MyStruct() {
-  const MyStruct tint_symbol_1 = {0.0f};
+  const MyStruct tint_symbol_1 = (MyStruct)0;
   return tint_symbol_1;
 }
 
 tint_array_wrapper ret_MyArray() {
-  const tint_array_wrapper tint_symbol_2 = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol_2 = {(float[10])0};
   return tint_symbol_2;
 }
 
@@ -36,7 +36,7 @@ void let_decls() {
   const float3 v6 = float3(1.0f, 1.0f, 1.0f);
   const float3x3 v7 = float3x3(v6, v6, v6);
   const MyStruct v8 = {1.0f};
-  const tint_array_wrapper v9 = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper v9 = {(float[10])0};
   const int v10 = ret_i32();
   const uint v11 = ret_u32();
   const float v12 = ret_f32();

test/var/inferred/function-var.wgsl.expected.hlsl

@@ -18,12 +18,12 @@ float ret_f32() {
 }
 
 MyStruct ret_MyStruct() {
-  const MyStruct tint_symbol_1 = {0.0f};
+  const MyStruct tint_symbol_1 = (MyStruct)0;
   return tint_symbol_1;
 }
 
 tint_array_wrapper ret_MyArray() {
-  const tint_array_wrapper tint_symbol_2 = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+  const tint_array_wrapper tint_symbol_2 = {(float[10])0};
   return tint_symbol_2;
 }
 
@@ -36,7 +36,7 @@ void var_decls() {
   float3 v6 = float3(1.0f, 1.0f, 1.0f);
   float3x3 v7 = float3x3(v6, v6, v6);
   MyStruct v8 = {1.0f};
-  tint_array_wrapper v9 = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+  tint_array_wrapper v9 = {(float[10])0};
   int v10 = ret_i32();
   uint v11 = ret_u32();
   float v12 = ret_f32();

test/var/inferred/global-let.wgsl.expected.hlsl

@@ -12,8 +12,8 @@ static const int3 v4 = int3(1, 1, 1);
 static const uint3 v5 = uint3(1u, 1u, 1u);
 static const float3 v6 = float3(1.0f, 1.0f, 1.0f);
 static const float3x3 v7 = float3x3(float3(1.0f, 1.0f, 1.0f), float3(1.0f, 1.0f, 1.0f), float3(1.0f, 1.0f, 1.0f));
-static const MyStruct v8 = {0.0f};
-static const tint_array_wrapper v9 = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f}};
+static const MyStruct v8 = (MyStruct)0;
+static const tint_array_wrapper v9 = {(float[10])0};
 
 struct tint_symbol {
   float4 value : SV_Target0;

test/var/initialization/function/array.wgsl.expected.hlsl

@@ -4,7 +4,7 @@ struct tint_array_wrapper {
 
 [numthreads(1, 1, 1)]
 void main() {
-  tint_array_wrapper v = {{0, 0, 0}};
+  tint_array_wrapper v = (tint_array_wrapper)0;
   v;
   return;
 }

test/var/initialization/function/struct.wgsl.expected.hlsl

@@ -5,7 +5,7 @@ struct S {
 
 [numthreads(1, 1, 1)]
 void main() {
-  S v = {0, 0.0f};
+  S v = (S)0;
   v;
   return;
 }

test/var/initialization/private/array.wgsl.expected.hlsl

@@ -2,7 +2,7 @@ struct tint_array_wrapper {
   int arr[3];
 };
 
-static tint_array_wrapper v = {{0, 0, 0}};
+static tint_array_wrapper v = (tint_array_wrapper)0;
 
 [numthreads(1, 1, 1)]
 void main() {

test/var/initialization/private/struct.wgsl.expected.hlsl

@@ -3,7 +3,7 @@ struct S {
   float b;
 };
 
-static S v = {0, 0.0f};
+static S v = (S)0;
 
 [numthreads(1, 1, 1)]
 void main() {

test/var/initialization/workgroup/array.wgsl.expected.hlsl

@@ -12,7 +12,7 @@ struct tint_symbol_1 {
 void main(tint_symbol_1 tint_symbol) {
   const uint local_invocation_index = tint_symbol.local_invocation_index;
   if ((local_invocation_index == 0u)) {
-    const tint_array_wrapper tint_symbol_2 = {{0, 0, 0}};
+    const tint_array_wrapper tint_symbol_2 = {(int[3])0};
     v = tint_symbol_2;
   }
   GroupMemoryBarrierWithGroupSync();

test/var/initialization/workgroup/struct.wgsl.expected.hlsl

@@ -13,7 +13,7 @@ struct tint_symbol_1 {
 void main(tint_symbol_1 tint_symbol) {
   const uint local_invocation_index = tint_symbol.local_invocation_index;
   if ((local_invocation_index == 0u)) {
-    const S tint_symbol_2 = {0, 0.0f};
+    const S tint_symbol_2 = (S)0;
     v = tint_symbol_2;
   }
   GroupMemoryBarrierWithGroupSync();