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// 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/tint/writer/spirv/spv_dump.h"
#include "src/tint/writer/spirv/test_helper.h"
namespace tint::writer::spirv {
namespace {
using namespace tint::builtin::fluent_types; // NOLINT
using namespace tint::number_suffixes; // NOLINT
using BuilderTest = TestHelper;
TEST_F(BuilderTest, Return) {
auto* ret = Return();
WrapInFunction(ret);
spirv::Builder& b = Build();
b.PushFunctionForTesting();
EXPECT_TRUE(b.GenerateReturnStatement(ret));
ASSERT_FALSE(b.has_error()) << b.Diagnostics();
EXPECT_EQ(DumpInstructions(b.CurrentFunction().instructions()), R"(OpReturn
)");
}
TEST_F(BuilderTest, Return_WithValue) {
auto* val = Call<vec3<f32>>(1_f, 1_f, 3_f);
auto* ret = Return(val);
Func("test", utils::Empty, ty.vec3<f32>(), utils::Vector{ret}, utils::Empty);
spirv::Builder& b = Build();
b.PushFunctionForTesting();
EXPECT_TRUE(b.GenerateReturnStatement(ret));
ASSERT_FALSE(b.has_error()) << b.Diagnostics();
EXPECT_EQ(DumpInstructions(b.Module().Types()), R"(%2 = OpTypeFloat 32
%1 = OpTypeVector %2 3
%3 = OpConstant %2 1
%4 = OpConstant %2 3
%5 = OpConstantComposite %1 %3 %3 %4
)");
EXPECT_EQ(DumpInstructions(b.CurrentFunction().instructions()),
R"(OpReturnValue %5
)");
}
TEST_F(BuilderTest, Return_WithValue_GeneratesLoad) {
auto* var = Var("param", ty.f32());
auto* ret = Return(var);
Func("test", utils::Empty, ty.f32(), utils::Vector{Decl(var), ret}, utils::Empty);
spirv::Builder& b = Build();
b.PushFunctionForTesting();
EXPECT_TRUE(b.GenerateFunctionVariable(var)) << b.Diagnostics();
EXPECT_TRUE(b.GenerateReturnStatement(ret)) << b.Diagnostics();
ASSERT_FALSE(b.has_error()) << b.Diagnostics();
EXPECT_EQ(DumpInstructions(b.Module().Types()), R"(%3 = OpTypeFloat 32
%2 = OpTypePointer Function %3
%4 = OpConstantNull %3
)");
EXPECT_EQ(DumpInstructions(b.CurrentFunction().variables()),
R"(%1 = OpVariable %2 Function %4
)");
EXPECT_EQ(DumpInstructions(b.CurrentFunction().instructions()),
R"(%5 = OpLoad %3 %1
OpReturnValue %5
)");
}
} // namespace
} // namespace tint::writer::spirv