src/tint/lang/spirv/writer/let_test.cc

// Copyright 2023 The Dawn & Tint Authors
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#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

TEST_F(SpirvWriterTest, Let_Constant) {
    auto* func = b.Function("foo", ty.void_());
    b.Append(func->Block(), [&] {
        b.Let("l", u32(42));
        b.Return(func);
    });

    ASSERT_TRUE(Generate()) << Error() << output_;
    EXPECT_INST("OpName %l \"l\"");
    EXPECT_INST("%l = OpConstant %uint 42");
}

TEST_F(SpirvWriterTest, Let_SharedConstant) {
    auto* func = b.Function("foo", ty.void_());
    b.Append(func->Block(), [&] {
        b.Let("l1", u32(42));
        b.Let("l2", u32(42));
        b.Return(func);
    });

    ASSERT_TRUE(Generate()) << Error() << output_;
    EXPECT_INST("OpName %l1 \"l1\"");
    EXPECT_INST("OpName %l1 \"l2\"");
    EXPECT_INST("%l1 = OpConstant %uint 42");
}

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