[ir] Add tests for unary conversion.

This CL adds tests for the builder_impl unary conversion.

Bug: tint:1718
Change-Id: Ie0b6dae94e2c8d3d702331448daa0de54181851d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/131582
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: James Price <jrprice@google.com>

src/tint/BUILD.gn

@@ -2147,6 +2147,7 @@ if (tint_build_unittests) {
       "ir/builder_impl_literal_test.cc",
       "ir/builder_impl_materialize_test.cc",
       "ir/builder_impl_test.cc",
+      "ir/builder_impl_unary_test.cc",
       "ir/builder_impl_var_test.cc",
       "ir/constant_test.cc",
       "ir/discard_test.cc",

src/tint/CMakeLists.txt

@@ -1445,6 +1445,7 @@ if(TINT_BUILD_TESTS)
       ir/builder_impl_literal_test.cc
       ir/builder_impl_materialize_test.cc
       ir/builder_impl_test.cc
+      ir/builder_impl_unary_test.cc
       ir/builder_impl_var_test.cc
       ir/constant_test.cc
       ir/discard_test.cc

src/tint/ir/builder_impl_unary_test.cc

@@ -0,0 +1,135 @@
+// Copyright 2023 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "src/tint/ir/test_helper.h"
+
+#include "gmock/gmock.h"
+#include "src/tint/ast/case_selector.h"
+#include "src/tint/ast/int_literal_expression.h"
+#include "src/tint/constant/scalar.h"
+
+namespace tint::ir {
+namespace {
+
+using namespace tint::number_suffixes;  // NOLINT
+
+using IR_BuilderImplTest = TestHelper;
+
+TEST_F(IR_BuilderImplTest, EmitExpression_Unary_Not) {
+    Func("my_func", utils::Empty, ty.bool_(), utils::Vector{Return(false)});
+    auto* expr = Not(Call("my_func"));
+    WrapInFunction(expr);
+
+    auto& b = CreateBuilder();
+    InjectFlowBlock();
+    auto r = b.EmitExpression(expr);
+    ASSERT_THAT(b.Diagnostics(), testing::IsEmpty());
+    ASSERT_TRUE(r);
+
+    Disassembler d(b.builder.ir);
+    d.EmitBlockInstructions(b.current_flow_block->As<ir::Block>());
+    EXPECT_EQ(d.AsString(), R"(%1:bool = call my_func
+%2:bool = eq %1:bool, false
+)");
+}
+
+TEST_F(IR_BuilderImplTest, EmitExpression_Unary_Complement) {
+    Func("my_func", utils::Empty, ty.u32(), utils::Vector{Return(1_u)});
+    auto* expr = Complement(Call("my_func"));
+    WrapInFunction(expr);
+
+    auto& b = CreateBuilder();
+    InjectFlowBlock();
+    auto r = b.EmitExpression(expr);
+    ASSERT_THAT(b.Diagnostics(), testing::IsEmpty());
+    ASSERT_TRUE(r);
+
+    Disassembler d(b.builder.ir);
+    d.EmitBlockInstructions(b.current_flow_block->As<ir::Block>());
+    EXPECT_EQ(d.AsString(), R"(%1:u32 = call my_func
+%2:u32 = complement %1:u32
+)");
+}
+
+TEST_F(IR_BuilderImplTest, EmitExpression_Unary_Negation) {
+    Func("my_func", utils::Empty, ty.i32(), utils::Vector{Return(1_i)});
+    auto* expr = Negation(Call("my_func"));
+    WrapInFunction(expr);
+
+    auto& b = CreateBuilder();
+    InjectFlowBlock();
+    auto r = b.EmitExpression(expr);
+    ASSERT_THAT(b.Diagnostics(), testing::IsEmpty());
+    ASSERT_TRUE(r);
+
+    Disassembler d(b.builder.ir);
+    d.EmitBlockInstructions(b.current_flow_block->As<ir::Block>());
+    EXPECT_EQ(d.AsString(), R"(%1:i32 = call my_func
+%2:i32 = negation %1:i32
+)");
+}
+
+TEST_F(IR_BuilderImplTest, EmitExpression_Unary_AddressOf) {
+    GlobalVar("v1", builtin::AddressSpace::kPrivate, ty.i32());
+
+    auto* expr = Decl(Let("v2", AddressOf("v1")));
+    WrapInFunction(expr);
+
+    auto r = Build();
+    ASSERT_TRUE(r) << Error();
+    auto m = r.Move();
+
+    EXPECT_EQ(Disassemble(m), R"(%fn0 = block
+%1:ref<private, i32, read_write> = var private read_write
+
+
+
+%fn1 = func test_function():void [@compute @workgroup_size(1, 1, 1)]
+  %fn2 = block
+  %2:ptr<private, i32, read_write> = addr_of %1:ref<private, i32, read_write>
+  ret
+func_end
+
+)");
+}
+
+TEST_F(IR_BuilderImplTest, EmitExpression_Unary_Indirection) {
+    GlobalVar("v1", builtin::AddressSpace::kPrivate, ty.i32());
+    utils::Vector stmts = {
+        Decl(Let("v3", AddressOf("v1"))),
+        Decl(Let("v2", Deref("v3"))),
+    };
+    WrapInFunction(stmts);
+
+    auto r = Build();
+    ASSERT_TRUE(r) << Error();
+    auto m = r.Move();
+
+    EXPECT_EQ(Disassemble(m), R"(%fn0 = block
+%1:ref<private, i32, read_write> = var private read_write
+
+
+
+%fn1 = func test_function():void [@compute @workgroup_size(1, 1, 1)]
+  %fn2 = block
+  %2:ptr<private, i32, read_write> = addr_of %1:ref<private, i32, read_write>
+  %3:i32 = indirection %2:ptr<private, i32, read_write>
+  ret
+func_end
+
+)");
+}
+
+}  // namespace
+}  // namespace tint::ir