src/tint/lang/spirv/writer/convert_test.cc - dawn - Git at Google

 // Copyright 2023 The Dawn & Tint Authors
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 // 1. Redistributions of source code must retain the above copyright notice, this
 //    list of conditions and the following disclaimer.
 //
 // 2. Redistributions in binary form must reproduce the above copyright notice,
 //    this list of conditions and the following disclaimer in the documentation
 //    and/or other materials provided with the distribution.
 //
 // 3. Neither the name of the copyright holder nor the names of its
 //    contributors may be used to endorse or promote products derived from
 //    this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include "src/tint/lang/spirv/writer/common/helper_test.h"

 namespace tint::spirv::writer {
 namespace {

 using namespace tint::core::fluent_types;     // NOLINT
 using namespace tint::core::number_suffixes;  // NOLINT

 /// A parameterized test case.
 struct ConvertCase {
     /// The input type.
     TestElementType in;
     /// The output type.
     TestElementType out;
     /// The expected SPIR-V instruction.
     std::string spirv_inst;
     /// The expected SPIR-V result type name.
     std::string spirv_type_name;
 };
 std::string PrintCase(testing::TestParamInfo<ConvertCase> cc) {
     StringStream ss;
     ss << cc.param.in << "_to_" << cc.param.out;
     return ss.str();
 }

 using Convert = SpirvWriterTestWithParam<ConvertCase>;
 TEST_P(Convert, Scalar) {
     auto& params = GetParam();
     auto* func = b.Function("foo", MakeScalarType(params.out));
     func->SetParams({b.FunctionParam("arg", MakeScalarType(params.in))});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(MakeScalarType(params.out), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST("%result = " + params.spirv_inst + " %" + params.spirv_type_name + " %arg");
 }
 TEST_P(Convert, Vector) {
     auto& params = GetParam();
     auto* func = b.Function("foo", MakeVectorType(params.out));
     func->SetParams({b.FunctionParam("arg", MakeVectorType(params.in))});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(MakeVectorType(params.out), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST("%result = " + params.spirv_inst + " %v2" + params.spirv_type_name + " %arg");
 }
 INSTANTIATE_TEST_SUITE_P(SpirvWriterTest,
                          Convert,
                          testing::Values(
                              // To f32.
                              ConvertCase{kF16, kF32, "OpFConvert", "float"},
                              ConvertCase{kI32, kF32, "OpConvertSToF", "float"},
                              ConvertCase{kU32, kF32, "OpConvertUToF", "float"},
                              ConvertCase{kBool, kF32, "OpSelect", "float"},

                              // To f16.
                              ConvertCase{kF32, kF16, "OpFConvert", "half"},
                              ConvertCase{kI32, kF16, "OpConvertSToF", "half"},
                              ConvertCase{kU32, kF16, "OpConvertUToF", "half"},
                              ConvertCase{kBool, kF16, "OpSelect", "half"},

                              // To i32.
                              // Note: ftoi cases are polyfilled and tested separately.
                              ConvertCase{kU32, kI32, "OpBitcast", "int"},
                              ConvertCase{kBool, kI32, "OpSelect", "int"},

                              // To u32.
                              // Note: ftoi cases are polyfilled and tested separately.
                              ConvertCase{kI32, kU32, "OpBitcast", "uint"},
                              ConvertCase{kBool, kU32, "OpSelect", "uint"},

                              // To bool.
                              ConvertCase{kF32, kBool, "OpFUnordNotEqual", "bool"},
                              ConvertCase{kF16, kBool, "OpFUnordNotEqual", "bool"},
                              ConvertCase{kI32, kBool, "OpINotEqual", "bool"},
                              ConvertCase{kU32, kBool, "OpINotEqual", "bool"}),
                          PrintCase);

 TEST_F(SpirvWriterTest, Convert_Mat2x3_F16_to_F32) {
     auto* func = b.Function("foo", ty.mat2x3<f32>());
     func->SetParams({b.FunctionParam("arg", ty.mat2x3<f16>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.mat2x3<f32>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
          %11 = OpCompositeExtract %v3half %arg 0
          %12 = OpFConvert %v3float %11
          %13 = OpCompositeExtract %v3half %arg 1
          %14 = OpFConvert %v3float %13
      %result = OpCompositeConstruct %mat2v3float %12 %14
 )");
 }

 TEST_F(SpirvWriterTest, Convert_Mat4x2_F32_to_F16) {
     auto* func = b.Function("foo", ty.mat4x2<f16>());
     func->SetParams({b.FunctionParam("arg", ty.mat4x2<f32>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.mat4x2<f16>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
          %11 = OpCompositeExtract %v2float %arg 0
          %12 = OpFConvert %v2half %11
          %13 = OpCompositeExtract %v2float %arg 1
          %14 = OpFConvert %v2half %13
          %15 = OpCompositeExtract %v2float %arg 2
          %16 = OpFConvert %v2half %15
          %17 = OpCompositeExtract %v2float %arg 3
          %18 = OpFConvert %v2half %17
      %result = OpCompositeConstruct %mat4v2half %12 %14 %16 %18
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F32_to_I32) {
     auto* func = b.Function("foo", ty.i32());
     func->SetParams({b.FunctionParam("arg", ty.f32())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.i32(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
                ; Function foo
         %foo = OpFunction %int None %5
         %arg = OpFunctionParameter %float
           %6 = OpLabel
      %result = OpFunctionCall %int %tint_f32_to_i32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_f32_to_i32
 %tint_f32_to_i32 = OpFunction %int None %5
       %value = OpFunctionParameter %float
          %10 = OpLabel
          %11 = OpConvertFToS %int %value
          %12 = OpFOrdGreaterThanEqual %bool %value %float_n2_14748365e_09
          %15 = OpSelect %int %12 %11 %int_n2147483648
          %17 = OpFOrdLessThanEqual %bool %value %float_2_14748352e_09
          %19 = OpSelect %int %17 %15 %int_2147483647
                OpReturnValue %19
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F32_to_U32) {
     auto* func = b.Function("foo", ty.u32());
     func->SetParams({b.FunctionParam("arg", ty.f32())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.u32(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
                ; Function foo
         %foo = OpFunction %uint None %5
         %arg = OpFunctionParameter %float
           %6 = OpLabel
      %result = OpFunctionCall %uint %tint_f32_to_u32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_f32_to_u32
 %tint_f32_to_u32 = OpFunction %uint None %5
       %value = OpFunctionParameter %float
          %10 = OpLabel
          %11 = OpConvertFToU %uint %value
          %12 = OpFOrdGreaterThanEqual %bool %value %float_0
          %15 = OpSelect %uint %12 %11 %uint_0
          %17 = OpFOrdLessThanEqual %bool %value %float_4_29496704e_09
          %19 = OpSelect %uint %17 %15 %uint_4294967295
                OpReturnValue %19
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F16_to_I32) {
     auto* func = b.Function("foo", ty.i32());
     func->SetParams({b.FunctionParam("arg", ty.f16())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.i32(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
                ; Function foo
         %foo = OpFunction %int None %5
         %arg = OpFunctionParameter %half
           %6 = OpLabel
      %result = OpFunctionCall %int %tint_f16_to_i32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_f16_to_i32
 %tint_f16_to_i32 = OpFunction %int None %5
       %value = OpFunctionParameter %half
          %10 = OpLabel
          %11 = OpConvertFToS %int %value
          %12 = OpFOrdGreaterThanEqual %bool %value %half_n0x1_ffcp_15
          %15 = OpSelect %int %12 %11 %int_n2147483648
          %17 = OpFOrdLessThanEqual %bool %value %half_0x1_ffcp_15
          %19 = OpSelect %int %17 %15 %int_2147483647
                OpReturnValue %19
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F16_to_U32) {
     auto* func = b.Function("foo", ty.u32());
     func->SetParams({b.FunctionParam("arg", ty.f16())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.u32(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
                ; Function foo
         %foo = OpFunction %uint None %5
         %arg = OpFunctionParameter %half
           %6 = OpLabel
      %result = OpFunctionCall %uint %tint_f16_to_u32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_f16_to_u32
 %tint_f16_to_u32 = OpFunction %uint None %5
       %value = OpFunctionParameter %half
          %10 = OpLabel
          %11 = OpConvertFToU %uint %value
          %12 = OpFOrdGreaterThanEqual %bool %value %half_0x0p_0
          %15 = OpSelect %uint %12 %11 %uint_0
          %17 = OpFOrdLessThanEqual %bool %value %half_0x1_ffcp_15
          %19 = OpSelect %uint %17 %15 %uint_4294967295
                OpReturnValue %19
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F32_to_I32_Vec2) {
     auto* func = b.Function("foo", ty.vec2<i32>());
     func->SetParams({b.FunctionParam("arg", ty.vec2<f32>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.vec2<i32>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
 %float_n2_14748365e_09 = OpConstant %float -2.14748365e+09
          %15 = OpConstantComposite %v2float %float_n2_14748365e_09 %float_n2_14748365e_09
        %bool = OpTypeBool
      %v2bool = OpTypeVector %bool 2
 %int_n2147483648 = OpConstant %int -2147483648
          %20 = OpConstantComposite %v2int %int_n2147483648 %int_n2147483648
 %float_2_14748352e_09 = OpConstant %float 2.14748352e+09
          %23 = OpConstantComposite %v2float %float_2_14748352e_09 %float_2_14748352e_09
 %int_2147483647 = OpConstant %int 2147483647
          %26 = OpConstantComposite %v2int %int_2147483647 %int_2147483647
        %void = OpTypeVoid
          %30 = OpTypeFunction %void

                ; Function foo
         %foo = OpFunction %v2int None %7
         %arg = OpFunctionParameter %v2float
           %8 = OpLabel
      %result = OpFunctionCall %v2int %tint_v2f32_to_v2i32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_v2f32_to_v2i32
 %tint_v2f32_to_v2i32 = OpFunction %v2int None %7
       %value = OpFunctionParameter %v2float
          %12 = OpLabel
          %13 = OpConvertFToS %v2int %value
          %14 = OpFOrdGreaterThanEqual %v2bool %value %15
          %19 = OpSelect %v2int %14 %13 %20
          %22 = OpFOrdLessThanEqual %v2bool %value %23
          %25 = OpSelect %v2int %22 %19 %26
                OpReturnValue %25
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F32_to_U32_Vec3) {
     auto* func = b.Function("foo", ty.vec3<u32>());
     func->SetParams({b.FunctionParam("arg", ty.vec3<f32>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.vec3<u32>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
 %float_4_29496704e_09 = OpConstant %float 4.29496704e+09
          %21 = OpConstantComposite %v3float %float_4_29496704e_09 %float_4_29496704e_09 %float_4_29496704e_09
 %uint_4294967295 = OpConstant %uint 4294967295
          %24 = OpConstantComposite %v3uint %uint_4294967295 %uint_4294967295 %uint_4294967295
        %void = OpTypeVoid
          %28 = OpTypeFunction %void

                ; Function foo
         %foo = OpFunction %v3uint None %7
         %arg = OpFunctionParameter %v3float
           %8 = OpLabel
      %result = OpFunctionCall %v3uint %tint_v3f32_to_v3u32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_v3f32_to_v3u32
 %tint_v3f32_to_v3u32 = OpFunction %v3uint None %7
       %value = OpFunctionParameter %v3float
          %12 = OpLabel
          %13 = OpConvertFToU %v3uint %value
          %14 = OpFOrdGreaterThanEqual %v3bool %value %15
          %18 = OpSelect %v3uint %14 %13 %19
          %20 = OpFOrdLessThanEqual %v3bool %value %21
          %23 = OpSelect %v3uint %20 %18 %24
                OpReturnValue %23
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F16_to_I32_Vec2) {
     auto* func = b.Function("foo", ty.vec2<i32>());
     func->SetParams({b.FunctionParam("arg", ty.vec2<f16>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.vec2<i32>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
 %half_n0x1_ffcp_15 = OpConstant %half -0x1.ffcp+15
          %15 = OpConstantComposite %v2half %half_n0x1_ffcp_15 %half_n0x1_ffcp_15
        %bool = OpTypeBool
      %v2bool = OpTypeVector %bool 2
 %int_n2147483648 = OpConstant %int -2147483648
          %20 = OpConstantComposite %v2int %int_n2147483648 %int_n2147483648
 %half_0x1_ffcp_15 = OpConstant %half 0x1.ffcp+15
          %23 = OpConstantComposite %v2half %half_0x1_ffcp_15 %half_0x1_ffcp_15
 %int_2147483647 = OpConstant %int 2147483647
          %26 = OpConstantComposite %v2int %int_2147483647 %int_2147483647
        %void = OpTypeVoid
          %30 = OpTypeFunction %void

                ; Function foo
         %foo = OpFunction %v2int None %7
         %arg = OpFunctionParameter %v2half
           %8 = OpLabel
      %result = OpFunctionCall %v2int %tint_v2f16_to_v2i32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_v2f16_to_v2i32
 %tint_v2f16_to_v2i32 = OpFunction %v2int None %7
       %value = OpFunctionParameter %v2half
          %12 = OpLabel
          %13 = OpConvertFToS %v2int %value
          %14 = OpFOrdGreaterThanEqual %v2bool %value %15
          %19 = OpSelect %v2int %14 %13 %20
          %22 = OpFOrdLessThanEqual %v2bool %value %23
          %25 = OpSelect %v2int %22 %19 %26
                OpReturnValue %25
                OpFunctionEnd
 )");
 }

 TEST_F(SpirvWriterTest, Convert_F16_to_U32_Vec4) {
     auto* func = b.Function("foo", ty.vec4<u32>());
     func->SetParams({b.FunctionParam("arg", ty.vec4<f16>())});
     b.Append(func->Block(), [&] {
         auto* result = b.Convert(ty.vec4<u32>(), func->Params()[0]);
         b.Return(func, result);
         mod.SetName(result, "result");
     });

     ASSERT_TRUE(Generate()) << Error() << output_;
     EXPECT_INST(R"(
 %half_0x1_ffcp_15 = OpConstant %half 0x1.ffcp+15
          %21 = OpConstantComposite %v4half %half_0x1_ffcp_15 %half_0x1_ffcp_15 %half_0x1_ffcp_15 %half_0x1_ffcp_15
 %uint_4294967295 = OpConstant %uint 4294967295
          %24 = OpConstantComposite %v4uint %uint_4294967295 %uint_4294967295 %uint_4294967295 %uint_4294967295
        %void = OpTypeVoid
          %28 = OpTypeFunction %void

                ; Function foo
         %foo = OpFunction %v4uint None %7
         %arg = OpFunctionParameter %v4half
           %8 = OpLabel
      %result = OpFunctionCall %v4uint %tint_v4f16_to_v4u32 %arg
                OpReturnValue %result
                OpFunctionEnd

                ; Function tint_v4f16_to_v4u32
 %tint_v4f16_to_v4u32 = OpFunction %v4uint None %7
       %value = OpFunctionParameter %v4half
          %12 = OpLabel
          %13 = OpConvertFToU %v4uint %value
          %14 = OpFOrdGreaterThanEqual %v4bool %value %15
          %18 = OpSelect %v4uint %14 %13 %19
          %20 = OpFOrdLessThanEqual %v4bool %value %21
          %23 = OpSelect %v4uint %20 %18 %24
                OpReturnValue %23
                OpFunctionEnd
 )");
 }

 }  // namespace
 }  // namespace tint::spirv::writer
	// Copyright 2023 The Dawn & Tint Authors
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,
	// this list of conditions and the following disclaimer in the documentation
	// and/or other materials provided with the distribution.
	//
	// 3. Neither the name of the copyright holder nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
	// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include "src/tint/lang/spirv/writer/common/helper_test.h"

	namespace tint::spirv::writer {
	namespace {

	using namespace tint::core::fluent_types; // NOLINT
	using namespace tint::core::number_suffixes; // NOLINT

	/// A parameterized test case.
	struct ConvertCase {
	/// The input type.
	TestElementType in;
	/// The output type.
	TestElementType out;
	/// The expected SPIR-V instruction.
	std::string spirv_inst;
	/// The expected SPIR-V result type name.
	std::string spirv_type_name;
	};
	std::string PrintCase(testing::TestParamInfo<ConvertCase> cc) {
	StringStream ss;
	ss << cc.param.in << "_to_" << cc.param.out;
	return ss.str();
	}

	using Convert = SpirvWriterTestWithParam<ConvertCase>;
	TEST_P(Convert, Scalar) {
	auto& params = GetParam();
	auto* func = b.Function("foo", MakeScalarType(params.out));
	func->SetParams({b.FunctionParam("arg", MakeScalarType(params.in))});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(MakeScalarType(params.out), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST("%result = " + params.spirv_inst + " %" + params.spirv_type_name + " %arg");
	}
	TEST_P(Convert, Vector) {
	auto& params = GetParam();
	auto* func = b.Function("foo", MakeVectorType(params.out));
	func->SetParams({b.FunctionParam("arg", MakeVectorType(params.in))});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(MakeVectorType(params.out), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST("%result = " + params.spirv_inst + " %v2" + params.spirv_type_name + " %arg");
	}
	INSTANTIATE_TEST_SUITE_P(SpirvWriterTest,
	Convert,
	testing::Values(
	// To f32.
	ConvertCase{kF16, kF32, "OpFConvert", "float"},
	ConvertCase{kI32, kF32, "OpConvertSToF", "float"},
	ConvertCase{kU32, kF32, "OpConvertUToF", "float"},
	ConvertCase{kBool, kF32, "OpSelect", "float"},

	// To f16.
	ConvertCase{kF32, kF16, "OpFConvert", "half"},
	ConvertCase{kI32, kF16, "OpConvertSToF", "half"},
	ConvertCase{kU32, kF16, "OpConvertUToF", "half"},
	ConvertCase{kBool, kF16, "OpSelect", "half"},

	// To i32.
	// Note: ftoi cases are polyfilled and tested separately.
	ConvertCase{kU32, kI32, "OpBitcast", "int"},
	ConvertCase{kBool, kI32, "OpSelect", "int"},

	// To u32.
	// Note: ftoi cases are polyfilled and tested separately.
	ConvertCase{kI32, kU32, "OpBitcast", "uint"},
	ConvertCase{kBool, kU32, "OpSelect", "uint"},

	// To bool.
	ConvertCase{kF32, kBool, "OpFUnordNotEqual", "bool"},
	ConvertCase{kF16, kBool, "OpFUnordNotEqual", "bool"},
	ConvertCase{kI32, kBool, "OpINotEqual", "bool"},
	ConvertCase{kU32, kBool, "OpINotEqual", "bool"}),
	PrintCase);

	TEST_F(SpirvWriterTest, Convert_Mat2x3_F16_to_F32) {
	auto* func = b.Function("foo", ty.mat2x3<f32>());
	func->SetParams({b.FunctionParam("arg", ty.mat2x3<f16>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.mat2x3<f32>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%11 = OpCompositeExtract %v3half %arg 0
	%12 = OpFConvert %v3float %11
	%13 = OpCompositeExtract %v3half %arg 1
	%14 = OpFConvert %v3float %13
	%result = OpCompositeConstruct %mat2v3float %12 %14
	)");
	}

	TEST_F(SpirvWriterTest, Convert_Mat4x2_F32_to_F16) {
	auto* func = b.Function("foo", ty.mat4x2<f16>());
	func->SetParams({b.FunctionParam("arg", ty.mat4x2<f32>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.mat4x2<f16>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%11 = OpCompositeExtract %v2float %arg 0
	%12 = OpFConvert %v2half %11
	%13 = OpCompositeExtract %v2float %arg 1
	%14 = OpFConvert %v2half %13
	%15 = OpCompositeExtract %v2float %arg 2
	%16 = OpFConvert %v2half %15
	%17 = OpCompositeExtract %v2float %arg 3
	%18 = OpFConvert %v2half %17
	%result = OpCompositeConstruct %mat4v2half %12 %14 %16 %18
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F32_to_I32) {
	auto* func = b.Function("foo", ty.i32());
	func->SetParams({b.FunctionParam("arg", ty.f32())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.i32(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	; Function foo
	%foo = OpFunction %int None %5
	%arg = OpFunctionParameter %float
	%6 = OpLabel
	%result = OpFunctionCall %int %tint_f32_to_i32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_f32_to_i32
	%tint_f32_to_i32 = OpFunction %int None %5
	%value = OpFunctionParameter %float
	%10 = OpLabel
	%11 = OpConvertFToS %int %value
	%12 = OpFOrdGreaterThanEqual %bool %value %float_n2_14748365e_09
	%15 = OpSelect %int %12 %11 %int_n2147483648
	%17 = OpFOrdLessThanEqual %bool %value %float_2_14748352e_09
	%19 = OpSelect %int %17 %15 %int_2147483647
	OpReturnValue %19
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F32_to_U32) {
	auto* func = b.Function("foo", ty.u32());
	func->SetParams({b.FunctionParam("arg", ty.f32())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.u32(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	; Function foo
	%foo = OpFunction %uint None %5
	%arg = OpFunctionParameter %float
	%6 = OpLabel
	%result = OpFunctionCall %uint %tint_f32_to_u32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_f32_to_u32
	%tint_f32_to_u32 = OpFunction %uint None %5
	%value = OpFunctionParameter %float
	%10 = OpLabel
	%11 = OpConvertFToU %uint %value
	%12 = OpFOrdGreaterThanEqual %bool %value %float_0
	%15 = OpSelect %uint %12 %11 %uint_0
	%17 = OpFOrdLessThanEqual %bool %value %float_4_29496704e_09
	%19 = OpSelect %uint %17 %15 %uint_4294967295
	OpReturnValue %19
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F16_to_I32) {
	auto* func = b.Function("foo", ty.i32());
	func->SetParams({b.FunctionParam("arg", ty.f16())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.i32(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	; Function foo
	%foo = OpFunction %int None %5
	%arg = OpFunctionParameter %half
	%6 = OpLabel
	%result = OpFunctionCall %int %tint_f16_to_i32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_f16_to_i32
	%tint_f16_to_i32 = OpFunction %int None %5
	%value = OpFunctionParameter %half
	%10 = OpLabel
	%11 = OpConvertFToS %int %value
	%12 = OpFOrdGreaterThanEqual %bool %value %half_n0x1_ffcp_15
	%15 = OpSelect %int %12 %11 %int_n2147483648
	%17 = OpFOrdLessThanEqual %bool %value %half_0x1_ffcp_15
	%19 = OpSelect %int %17 %15 %int_2147483647
	OpReturnValue %19
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F16_to_U32) {
	auto* func = b.Function("foo", ty.u32());
	func->SetParams({b.FunctionParam("arg", ty.f16())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.u32(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	; Function foo
	%foo = OpFunction %uint None %5
	%arg = OpFunctionParameter %half
	%6 = OpLabel
	%result = OpFunctionCall %uint %tint_f16_to_u32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_f16_to_u32
	%tint_f16_to_u32 = OpFunction %uint None %5
	%value = OpFunctionParameter %half
	%10 = OpLabel
	%11 = OpConvertFToU %uint %value
	%12 = OpFOrdGreaterThanEqual %bool %value %half_0x0p_0
	%15 = OpSelect %uint %12 %11 %uint_0
	%17 = OpFOrdLessThanEqual %bool %value %half_0x1_ffcp_15
	%19 = OpSelect %uint %17 %15 %uint_4294967295
	OpReturnValue %19
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F32_to_I32_Vec2) {
	auto* func = b.Function("foo", ty.vec2<i32>());
	func->SetParams({b.FunctionParam("arg", ty.vec2<f32>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.vec2<i32>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%float_n2_14748365e_09 = OpConstant %float -2.14748365e+09
	%15 = OpConstantComposite %v2float %float_n2_14748365e_09 %float_n2_14748365e_09
	%bool = OpTypeBool
	%v2bool = OpTypeVector %bool 2
	%int_n2147483648 = OpConstant %int -2147483648
	%20 = OpConstantComposite %v2int %int_n2147483648 %int_n2147483648
	%float_2_14748352e_09 = OpConstant %float 2.14748352e+09
	%23 = OpConstantComposite %v2float %float_2_14748352e_09 %float_2_14748352e_09
	%int_2147483647 = OpConstant %int 2147483647
	%26 = OpConstantComposite %v2int %int_2147483647 %int_2147483647
	%void = OpTypeVoid
	%30 = OpTypeFunction %void

	; Function foo
	%foo = OpFunction %v2int None %7
	%arg = OpFunctionParameter %v2float
	%8 = OpLabel
	%result = OpFunctionCall %v2int %tint_v2f32_to_v2i32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_v2f32_to_v2i32
	%tint_v2f32_to_v2i32 = OpFunction %v2int None %7
	%value = OpFunctionParameter %v2float
	%12 = OpLabel
	%13 = OpConvertFToS %v2int %value
	%14 = OpFOrdGreaterThanEqual %v2bool %value %15
	%19 = OpSelect %v2int %14 %13 %20
	%22 = OpFOrdLessThanEqual %v2bool %value %23
	%25 = OpSelect %v2int %22 %19 %26
	OpReturnValue %25
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F32_to_U32_Vec3) {
	auto* func = b.Function("foo", ty.vec3<u32>());
	func->SetParams({b.FunctionParam("arg", ty.vec3<f32>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.vec3<u32>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%float_4_29496704e_09 = OpConstant %float 4.29496704e+09
	%21 = OpConstantComposite %v3float %float_4_29496704e_09 %float_4_29496704e_09 %float_4_29496704e_09
	%uint_4294967295 = OpConstant %uint 4294967295
	%24 = OpConstantComposite %v3uint %uint_4294967295 %uint_4294967295 %uint_4294967295
	%void = OpTypeVoid
	%28 = OpTypeFunction %void

	; Function foo
	%foo = OpFunction %v3uint None %7
	%arg = OpFunctionParameter %v3float
	%8 = OpLabel
	%result = OpFunctionCall %v3uint %tint_v3f32_to_v3u32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_v3f32_to_v3u32
	%tint_v3f32_to_v3u32 = OpFunction %v3uint None %7
	%value = OpFunctionParameter %v3float
	%12 = OpLabel
	%13 = OpConvertFToU %v3uint %value
	%14 = OpFOrdGreaterThanEqual %v3bool %value %15
	%18 = OpSelect %v3uint %14 %13 %19
	%20 = OpFOrdLessThanEqual %v3bool %value %21
	%23 = OpSelect %v3uint %20 %18 %24
	OpReturnValue %23
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F16_to_I32_Vec2) {
	auto* func = b.Function("foo", ty.vec2<i32>());
	func->SetParams({b.FunctionParam("arg", ty.vec2<f16>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.vec2<i32>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%half_n0x1_ffcp_15 = OpConstant %half -0x1.ffcp+15
	%15 = OpConstantComposite %v2half %half_n0x1_ffcp_15 %half_n0x1_ffcp_15
	%bool = OpTypeBool
	%v2bool = OpTypeVector %bool 2
	%int_n2147483648 = OpConstant %int -2147483648
	%20 = OpConstantComposite %v2int %int_n2147483648 %int_n2147483648
	%half_0x1_ffcp_15 = OpConstant %half 0x1.ffcp+15
	%23 = OpConstantComposite %v2half %half_0x1_ffcp_15 %half_0x1_ffcp_15
	%int_2147483647 = OpConstant %int 2147483647
	%26 = OpConstantComposite %v2int %int_2147483647 %int_2147483647
	%void = OpTypeVoid
	%30 = OpTypeFunction %void

	; Function foo
	%foo = OpFunction %v2int None %7
	%arg = OpFunctionParameter %v2half
	%8 = OpLabel
	%result = OpFunctionCall %v2int %tint_v2f16_to_v2i32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_v2f16_to_v2i32
	%tint_v2f16_to_v2i32 = OpFunction %v2int None %7
	%value = OpFunctionParameter %v2half
	%12 = OpLabel
	%13 = OpConvertFToS %v2int %value
	%14 = OpFOrdGreaterThanEqual %v2bool %value %15
	%19 = OpSelect %v2int %14 %13 %20
	%22 = OpFOrdLessThanEqual %v2bool %value %23
	%25 = OpSelect %v2int %22 %19 %26
	OpReturnValue %25
	OpFunctionEnd
	)");
	}

	TEST_F(SpirvWriterTest, Convert_F16_to_U32_Vec4) {
	auto* func = b.Function("foo", ty.vec4<u32>());
	func->SetParams({b.FunctionParam("arg", ty.vec4<f16>())});
	b.Append(func->Block(), [&] {
	auto* result = b.Convert(ty.vec4<u32>(), func->Params()[0]);
	b.Return(func, result);
	mod.SetName(result, "result");
	});

	ASSERT_TRUE(Generate()) << Error() << output_;
	EXPECT_INST(R"(
	%half_0x1_ffcp_15 = OpConstant %half 0x1.ffcp+15
	%21 = OpConstantComposite %v4half %half_0x1_ffcp_15 %half_0x1_ffcp_15 %half_0x1_ffcp_15 %half_0x1_ffcp_15
	%uint_4294967295 = OpConstant %uint 4294967295
	%24 = OpConstantComposite %v4uint %uint_4294967295 %uint_4294967295 %uint_4294967295 %uint_4294967295
	%void = OpTypeVoid
	%28 = OpTypeFunction %void

	; Function foo
	%foo = OpFunction %v4uint None %7
	%arg = OpFunctionParameter %v4half
	%8 = OpLabel
	%result = OpFunctionCall %v4uint %tint_v4f16_to_v4u32 %arg
	OpReturnValue %result
	OpFunctionEnd

	; Function tint_v4f16_to_v4u32
	%tint_v4f16_to_v4u32 = OpFunction %v4uint None %7
	%value = OpFunctionParameter %v4half
	%12 = OpLabel
	%13 = OpConvertFToU %v4uint %value
	%14 = OpFOrdGreaterThanEqual %v4bool %value %15
	%18 = OpSelect %v4uint %14 %13 %19
	%20 = OpFOrdLessThanEqual %v4bool %value %21
	%23 = OpSelect %v4uint %20 %18 %24
	OpReturnValue %23
	OpFunctionEnd
	)");
	}

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