// Copyright 2020 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/writer/spirv/spv_dump.h"
#include "src/writer/spirv/test_helper.h"

namespace tint {
namespace writer {
namespace spirv {
namespace {

using SpvBuilderConstructorTest = TestHelper;

TEST_F(SpvBuilderConstructorTest, Const) {
  auto* c = Expr(42.2f);
  WrapInFunction(c);

  spirv::Builder& b = Build();

  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, c, true), 2u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%1 = OpTypeFloat 32
%2 = OpConstant %1 42.2000008
)");
}

TEST_F(SpvBuilderConstructorTest, Type_WithCasts_OutsideFunction_IsError) {
  auto* t = Construct<f32>(Construct<u32>(1));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_EQ(b.GenerateExpression(t), 0u);
  EXPECT_TRUE(b.has_error()) << b.error();
  EXPECT_EQ(b.error(),
            "Internal error: trying to add SPIR-V instruction 124 outside a "
            "function");
}

TEST_F(SpvBuilderConstructorTest, Type) {
  auto* t = vec3<f32>(1.0f, 1.0f, 3.0f);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, t, true), 5u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 1
%4 = OpConstant %2 3
%5 = OpConstantComposite %1 %3 %3 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_WithCasts) {
  auto* t = vec2<f32>(Construct<f32>(1), Construct<f32>(1));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 7u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 2
%4 = OpTypeInt 32 1
%5 = OpConstant %4 1
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%3 = OpConvertSToF %2 %5
%6 = OpConvertSToF %2 %5
%7 = OpCompositeConstruct %1 %3 %6
)");
}

TEST_F(SpvBuilderConstructorTest, Type_WithAlias) {
  // type Int = i32
  // cast<Int>(2.3f)

  auto* alias = ty.alias("Int", ty.i32());
  AST().AddConstructedType(alias);
  auto* cast = Construct(alias, 2.3f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%3 = OpTypeFloat 32
%4 = OpConstant %3 2.29999995
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpConvertFToS %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_IdentifierExpression_Param) {
  auto* var = Global("ident", ty.f32(), ast::StorageClass::kFunction);

  auto* t = vec2<f32>(1.0f, "ident");
  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateFunctionVariable(var)) << b.error();

  EXPECT_EQ(b.GenerateExpression(t), 8u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypePointer Function %3
%4 = OpConstantNull %3
%5 = OpTypeVector %3 2
%6 = OpConstant %3 1
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].variables()),
            R"(%1 = OpVariable %2 Function %4
)");

  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%7 = OpLoad %3 %1
%8 = OpCompositeConstruct %5 %6 %7
)");
}

TEST_F(SpvBuilderConstructorTest, Vector_Bitcast_Params) {
  auto* t = vec2<u32>(Construct<u32>(1), Construct<u32>(1));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 7u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 0
%1 = OpTypeVector %2 2
%4 = OpTypeInt 32 1
%5 = OpConstant %4 1
)");

  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%3 = OpBitcast %2 %5
%6 = OpBitcast %2 %5
%7 = OpCompositeConstruct %1 %3 %6
)");
}

TEST_F(SpvBuilderConstructorTest, Type_NonConst_Value_Fails) {
  auto* rel = create<ast::BinaryExpression>(ast::BinaryOp::kAdd, Expr(3.0f),
                                            Expr(3.0f));

  auto* t = vec2<f32>(1.0f, rel);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, t, true), 0u);
  EXPECT_TRUE(b.has_error());
  EXPECT_EQ(b.error(), R"(constructor must be a constant expression)");
}

TEST_F(SpvBuilderConstructorTest, Type_Bool_With_Bool) {
  auto* cast = Construct<bool>(true);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(cast), 3u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeBool
%3 = OpConstantTrue %2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_I32_With_I32) {
  auto* cast = Construct<i32>(2);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 3u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%3 = OpConstant %2 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_U32_With_U32) {
  auto* cast = Construct<u32>(2u);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 3u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 0
%3 = OpConstant %2 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_F32_With_F32) {
  auto* cast = Construct<f32>(2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 3u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpConstant %2 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec2_With_F32_F32) {
  auto* cast = vec2<f32>(2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 4u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 2
%3 = OpConstant %2 2
%4 = OpConstantComposite %1 %3 %3
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec2_With_Vec2) {
  auto* value = vec2<f32>(2.0f, 2.0f);
  auto* cast = vec2<f32>(value);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec3_With_F32_F32_F32) {
  auto* cast = vec3<f32>(2.0f, 2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 4u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 2
%4 = OpConstantComposite %1 %3 %3 %3
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec3_With_F32_Vec2) {
  auto* cast = vec3<f32>(2.0f, vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeConstruct %1 %3 %6 %7
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec3_With_Vec2_F32) {
  auto* cast = vec3<f32>(vec2<f32>(2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeConstruct %1 %6 %7 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec3_With_Vec3) {
  auto* value = vec3<f32>(2.0f, 2.0f, 2.0f);
  auto* cast = vec3<f32>(value);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 3
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_F32_F32_F32_F32) {
  auto* cast = vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 4u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpConstantComposite %1 %3 %3 %3 %3
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_F32_F32_Vec2) {
  auto* cast = vec4<f32>(2.0f, 2.0f, vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeConstruct %1 %3 %3 %6 %7
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_F32_Vec2_F32) {
  auto* cast = vec4<f32>(2.0f, vec2<f32>(2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeConstruct %1 %3 %6 %7 %3
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_Vec2_F32_F32) {
  auto* cast = vec4<f32>(vec2<f32>(2.0f, 2.0f), 2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeConstruct %1 %6 %7 %4 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_Vec2_Vec2) {
  auto* cast = vec4<f32>(vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 10u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeExtract %2 %5 0
%9 = OpCompositeExtract %2 %5 1
%10 = OpCompositeConstruct %1 %6 %7 %8 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_F32_Vec3) {
  auto* cast = vec4<f32>(2.0f, vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 9u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 3
%5 = OpConstantComposite %4 %3 %3 %3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeExtract %2 %5 2
%9 = OpCompositeConstruct %1 %3 %6 %7 %8
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_Vec3_F32) {
  auto* cast = vec4<f32>(vec3<f32>(2.0f, 2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 9u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 3
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%6 = OpCompositeExtract %2 %5 0
%7 = OpCompositeExtract %2 %5 1
%8 = OpCompositeExtract %2 %5 2
%9 = OpCompositeConstruct %1 %6 %7 %8 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Vec4_With_Vec4) {
  auto* value = vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f);
  auto* cast = vec4<f32>(value);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 4
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4 %4
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"()");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec2_With_Vec2) {
  auto* cast = vec2<f32>(vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec3_With_Vec3) {
  auto* cast = vec3<f32>(vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 3
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_Vec4) {
  auto* cast = vec4<f32>(vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 5u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 4
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec3_With_F32_Vec2) {
  auto* cast = vec3<f32>(2.0f, vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 11u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantComposite %1 %3 %6 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec3_With_Vec2_F32) {
  auto* cast = vec3<f32>(vec2<f32>(2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 11u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantComposite %1 %6 %9 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_F32_F32_Vec2) {
  auto* cast = vec4<f32>(2.0f, 2.0f, vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 11u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantComposite %1 %3 %3 %6 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_F32_Vec2_F32) {
  auto* cast = vec4<f32>(2.0f, vec2<f32>(2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 11u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 2
%5 = OpConstantComposite %4 %3 %3
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantComposite %1 %3 %6 %9 %3
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_Vec2_F32_F32) {
  auto* cast = vec4<f32>(vec2<f32>(2.0f, 2.0f), 2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 11u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantComposite %1 %6 %9 %4 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_Vec2_Vec2) {
  auto* cast = vec4<f32>(vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 13u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 2
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%11 = OpSpecConstantOp %2 CompositeExtract %5 8
%12 = OpSpecConstantOp %2 CompositeExtract %5 10
%13 = OpSpecConstantComposite %1 %6 %9 %11 %12
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_F32_Vec3) {
  auto* cast = vec4<f32>(2.0f, vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 13u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpConstant %2 2
%4 = OpTypeVector %2 3
%5 = OpConstantComposite %4 %3 %3 %3
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%12 = OpConstant %7 2
%11 = OpSpecConstantOp %2 CompositeExtract %5 12
%13 = OpSpecConstantComposite %1 %3 %6 %9 %11
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ModuleScope_Vec4_With_Vec3_F32) {
  auto* cast = vec4<f32>(vec3<f32>(2.0f, 2.0f, 2.0f), 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateConstructorExpression(nullptr, cast, true), 13u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 4
%3 = OpTypeVector %2 3
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4 %4
%7 = OpTypeInt 32 0
%8 = OpConstant %7 0
%6 = OpSpecConstantOp %2 CompositeExtract %5 8
%10 = OpConstant %7 1
%9 = OpSpecConstantOp %2 CompositeExtract %5 10
%12 = OpConstant %7 2
%11 = OpSpecConstantOp %2 CompositeExtract %5 12
%13 = OpSpecConstantComposite %1 %6 %9 %11 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat2x2_With_Vec2_Vec2) {
  auto* cast = mat2x2<f32>(vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%1 = OpTypeMatrix %2 2
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4
%6 = OpConstantComposite %1 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat3x2_With_Vec2_Vec2_Vec2) {
  auto* cast = mat3x2<f32>(vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f),
                           vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%1 = OpTypeMatrix %2 3
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat4x2_With_Vec2_Vec2_Vec2_Vec2) {
  auto* cast = mat4x2<f32>(vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f),
                           vec2<f32>(2.0f, 2.0f), vec2<f32>(2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%1 = OpTypeMatrix %2 4
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat2x3_With_Vec3_Vec3) {
  auto* cast =
      mat2x3<f32>(vec3<f32>(2.0f, 2.0f, 2.0f), vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 3
%1 = OpTypeMatrix %2 2
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat3x3_With_Vec3_Vec3_Vec3) {
  auto* cast =
      mat3x3<f32>(vec3<f32>(2.0f, 2.0f, 2.0f), vec3<f32>(2.0f, 2.0f, 2.0f),
                  vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 3
%1 = OpTypeMatrix %2 3
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat4x3_With_Vec3_Vec3_Vec3_Vec3) {
  auto* cast =
      mat4x3<f32>(vec3<f32>(2.0f, 2.0f, 2.0f), vec3<f32>(2.0f, 2.0f, 2.0f),
                  vec3<f32>(2.0f, 2.0f, 2.0f), vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 3
%1 = OpTypeMatrix %2 4
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat2x4_With_Vec4_Vec4) {
  auto* cast = mat2x4<f32>(vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f),
                           vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 4
%1 = OpTypeMatrix %2 2
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat3x4_With_Vec4_Vec4_Vec4) {
  auto* cast = mat3x4<f32>(vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f),
                           vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f),
                           vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 4
%1 = OpTypeMatrix %2 3
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Mat4x4_With_Vec4_Vec4_Vec4_Vec4) {
  auto* cast = mat4x4<f32>(
      vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f), vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f),
      vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f), vec4<f32>(2.0f, 2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 4
%1 = OpTypeMatrix %2 4
%4 = OpConstant %3 2
%5 = OpConstantComposite %2 %4 %4 %4 %4
%6 = OpConstantComposite %1 %5 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Array_5_F32) {
  auto* cast = array<f32, 5>(2.0f, 2.0f, 2.0f, 2.0f, 2.0f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 0
%4 = OpConstant %3 5
%1 = OpTypeArray %2 %4
%5 = OpConstant %2 2
%6 = OpConstantComposite %1 %5 %5 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Array_2_Vec3) {
  auto* cast =
      array<f32, 2>(vec3<f32>(2.0f, 2.0f, 2.0f), vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 8u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 0
%4 = OpConstant %3 2
%1 = OpTypeArray %2 %4
%5 = OpTypeVector %2 3
%6 = OpConstant %2 2
%7 = OpConstantComposite %5 %6 %6 %6
%8 = OpConstantComposite %1 %7 %7
)");
}

TEST_F(SpvBuilderConstructorTest, CommonInitializer_TwoVectors) {
  auto* v1 = vec3<f32>(2.0f, 2.0f, 2.0f);
  auto* v2 = vec3<f32>(2.0f, 2.0f, 2.0f);
  ast::StatementList stmts = {
      WrapInStatement(v1),
      WrapInStatement(v2),
  };
  WrapInFunction(stmts);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(v1), 4u);
  EXPECT_EQ(b.GenerateExpression(v2), 4u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 2
%4 = OpConstantComposite %1 %3 %3 %3
)");
}

TEST_F(SpvBuilderConstructorTest, CommonInitializer_TwoArrays) {
  auto* a1 = array<f32, 3>(2.0f, 2.0f, 2.0f);
  auto* a2 = array<f32, 3>(2.0f, 2.0f, 2.0f);
  ast::StatementList stmts = {
      WrapInStatement(a1),
      WrapInStatement(a2),
  };
  WrapInFunction(stmts);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(a1), 6u);
  EXPECT_EQ(b.GenerateExpression(a2), 6u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 0
%4 = OpConstant %3 3
%1 = OpTypeArray %2 %4
%5 = OpConstant %2 2
%6 = OpConstantComposite %1 %5 %5 %5
)");
}

TEST_F(SpvBuilderConstructorTest, CommonInitializer_Array_VecArray) {
  // Test that initializers of different types with the same values produce
  // different OpConstantComposite instructions.
  // crbug.com/tint/777
  auto* a1 = array<f32, 2>(1.0f, 2.0f);
  auto* a2 = array<f32, 2>(vec2<f32>(1.0f, 2.0f), vec2<f32>(1.0f, 2.0f));
  ast::StatementList stmts = {
      WrapInStatement(a1),
      WrapInStatement(a2),
  };
  WrapInFunction(stmts);
  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(a1), 7u);
  EXPECT_EQ(b.GenerateExpression(a2), 10u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 0
%4 = OpConstant %3 2
%1 = OpTypeArray %2 %4
%5 = OpConstant %2 1
%6 = OpConstant %2 2
%7 = OpConstantComposite %1 %5 %6
%8 = OpTypeVector %2 2
%9 = OpConstantComposite %8 %5 %6
%10 = OpConstantComposite %1 %9 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Struct) {
  auto* s = Structure("my_struct", {
                                       Member("a", ty.f32()),
                                       Member("b", ty.vec3<f32>()),
                                   });

  auto* t = Construct(s, 2.0f, vec3<f32>(2.0f, 2.0f, 2.0f));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 6u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeVector %2 3
%1 = OpTypeStruct %2 %3
%4 = OpConstant %2 2
%5 = OpConstantComposite %3 %4 %4 %4
%6 = OpConstantComposite %1 %4 %5
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_F32) {
  auto* t = Construct(ty.f32());

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 2u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%1 = OpTypeFloat 32
%2 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_I32) {
  auto* t = Construct<i32>();

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 2u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%1 = OpTypeInt 32 1
%2 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_U32) {
  auto* t = Construct<u32>();

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 2u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%1 = OpTypeInt 32 0
%2 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_Bool) {
  auto* t = Construct(ty.bool_());

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 2u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%1 = OpTypeBool
%2 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_Vector) {
  auto* t = vec2<i32>();

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 3u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%1 = OpTypeVector %2 2
%3 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_Matrix) {
  auto* t = mat4x2<f32>();

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 4u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32
%2 = OpTypeVector %3 2
%1 = OpTypeMatrix %2 4
%4 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_Array) {
  auto* t = array<i32, 2>();

  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 5u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%3 = OpTypeInt 32 0
%4 = OpConstant %3 2
%1 = OpTypeArray %2 %4
%5 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_ZeroInit_Struct) {
  auto* s = Structure("my_struct", {Member("a", ty.f32())});
  auto* t = Construct(s);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  b.push_function(Function{});

  EXPECT_EQ(b.GenerateExpression(t), 3u);
  ASSERT_FALSE(b.has_error()) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeStruct %2
%3 = OpConstantNull %1
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_U32_To_I32) {
  auto* cast = Construct<i32>(2u);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%3 = OpTypeInt 32 0
%4 = OpConstant %3 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpBitcast %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_I32_To_U32) {
  auto* cast = Construct<u32>(2);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 0
%3 = OpTypeInt 32 1
%4 = OpConstant %3 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpBitcast %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_F32_To_I32) {
  auto* cast = Construct<i32>(2.4f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 1
%3 = OpTypeFloat 32
%4 = OpConstant %3 2.4000001
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpConvertFToS %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_F32_To_U32) {
  auto* cast = Construct<u32>(2.4f);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeInt 32 0
%3 = OpTypeFloat 32
%4 = OpConstant %3 2.4000001
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpConvertFToU %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_I32_To_F32) {
  auto* cast = Construct<f32>(2);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 1
%4 = OpConstant %3 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpConvertSToF %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_U32_To_F32) {
  auto* cast = Construct<f32>(2u);
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  EXPECT_EQ(b.GenerateExpression(cast), 1u);

  EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeFloat 32
%3 = OpTypeInt 32 0
%4 = OpConstant %3 2
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%1 = OpConvertUToF %2 %4
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_U32_to_I32) {
  auto* var = Global("i", ty.vec3<u32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<i32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeInt 32 0
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeInt 32 1
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpBitcast %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_F32_to_I32) {
  auto* var = Global("i", ty.vec3<f32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<i32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeFloat 32
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeInt 32 1
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpConvertFToS %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_I32_to_U32) {
  auto* var = Global("i", ty.vec3<i32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<u32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeInt 32 1
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeInt 32 0
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpBitcast %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_F32_to_U32) {
  auto* var = Global("i", ty.vec3<f32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<u32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeFloat 32
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeInt 32 0
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpConvertFToU %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_I32_to_F32) {
  auto* var = Global("i", ty.vec3<i32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<f32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeInt 32 1
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeFloat 32
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpConvertSToF %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest, Type_Convert_Vectors_U32_to_F32) {
  auto* var = Global("i", ty.vec3<u32>(), ast::StorageClass::kPrivate);

  auto* cast = vec3<f32>("i");
  WrapInFunction(cast);

  spirv::Builder& b = Build();

  b.push_function(Function{});
  ASSERT_TRUE(b.GenerateGlobalVariable(var)) << b.error();
  EXPECT_EQ(b.GenerateExpression(cast), 6u) << b.error();

  EXPECT_EQ(DumpInstructions(b.types()), R"(%4 = OpTypeInt 32 0
%3 = OpTypeVector %4 3
%2 = OpTypePointer Private %3
%5 = OpConstantNull %3
%1 = OpVariable %2 Private %5
%8 = OpTypeFloat 32
%7 = OpTypeVector %8 3
)");
  EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
            R"(%9 = OpLoad %3 %1
%6 = OpConvertUToF %7 %9
)");
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_GlobalVectorWithAllConstConstructors) {
  // vec3<f32>(1.0, 2.0, 3.0)  -> true
  auto* t = vec3<f32>(1.f, 2.f, 3.f);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_TRUE(b.is_constructor_const(t, true));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest, IsConstructorConst_GlobalVector_WithIdent) {
  // vec3<f32>(a, b, c)  -> false -- ERROR

  Global("a", ty.f32(), ast::StorageClass::kPrivate);
  Global("b", ty.f32(), ast::StorageClass::kPrivate);
  Global("c", ty.f32(), ast::StorageClass::kPrivate);

  auto* t = vec3<f32>("a", "b", "c");
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, true));
  EXPECT_TRUE(b.has_error());
  EXPECT_EQ(b.error(), "constructor must be a constant expression");
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_GlobalArrayWithAllConstConstructors) {
  // array<vec3<f32>, 2>(vec3<f32>(1.0, 2.0, 3.0), vec3<f32>(1.0, 2.0, 3.0))
  //   -> true
  auto* t = Construct(ty.array(ty.vec2<f32>(), 2), vec3<f32>(1.f, 2.f, 3.f),
                      vec3<f32>(1.f, 2.f, 3.f));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_TRUE(b.is_constructor_const(t, true));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_GlobalVectorWithMatchingTypeConstructors) {
  // vec2<f32>(f32(1.0), f32(2.0))  -> false

  auto* t = vec2<f32>(Construct<f32>(1.f), Construct<f32>(2.f));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, true));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_GlobalWithTypeCastConstructor) {
  // vec2<f32>(f32(1), f32(2)) -> false

  auto* t = vec2<f32>(Construct<f32>(1), Construct<f32>(2));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, true));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_VectorWithAllConstConstructors) {
  // vec3<f32>(1.0, 2.0, 3.0)  -> true

  auto* t = vec3<f32>(1.f, 2.f, 3.f);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_TRUE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest, IsConstructorConst_Vector_WithIdent) {
  // vec3<f32>(a, b, c)  -> false

  Global("a", ty.f32(), ast::StorageClass::kPrivate);
  Global("b", ty.f32(), ast::StorageClass::kPrivate);
  Global("c", ty.f32(), ast::StorageClass::kPrivate);

  auto* t = vec3<f32>("a", "b", "c");
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_ArrayWithAllConstConstructors) {
  // array<vec3<f32>, 2>(vec3<f32>(1.0, 2.0, 3.0), vec3<f32>(1.0, 2.0, 3.0))
  //   -> true

  auto* first = vec3<f32>(1.f, 2.f, 3.f);
  auto* second = vec3<f32>(1.f, 2.f, 3.f);

  auto* t = Construct(ty.array(ty.vec3<f32>(), 2), first, second);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_TRUE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_VectorWithTypeCastConstConstructors) {
  // vec2<f32>(f32(1), f32(2))  -> false

  auto* t = vec2<f32>(Construct<f32>(1), Construct<f32>(2));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest, IsConstructorConst_BitCastScalars) {
  auto* t = vec2<u32>(Construct<u32>(1), Construct<u32>(1));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest, IsConstructorConst_Struct) {
  auto* s = Structure("my_struct", {
                                       Member("a", ty.f32()),
                                       Member("b", ty.vec3<f32>()),
                                   });

  auto* t = Construct(s, 2.f, vec3<f32>(2.f, 2.f, 2.f));
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_TRUE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

TEST_F(SpvBuilderConstructorTest,
       IsConstructorConst_Struct_WithIdentSubExpression) {
  auto* s = Structure("my_struct", {
                                       Member("a", ty.f32()),
                                       Member("b", ty.vec3<f32>()),
                                   });

  Global("a", ty.f32(), ast::StorageClass::kPrivate);
  Global("b", ty.f32(), ast::StorageClass::kPrivate);

  auto* t = Construct(s, 2.f, "a", 2.f);
  WrapInFunction(t);

  spirv::Builder& b = Build();

  EXPECT_FALSE(b.is_constructor_const(t, false));
  EXPECT_FALSE(b.has_error());
}

}  // namespace
}  // namespace spirv
}  // namespace writer
}  // namespace tint