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// Copyright 2024 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
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#include "src/tint/lang/spirv/reader/reader.h"
#include <string>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "src/tint/lang/core/ir/disassembler.h"
#include "src/tint/lang/core/ir/module.h"
#include "src/tint/lang/core/ir/validator.h"
#include "src/tint/lang/spirv/reader/common/helper_test.h"
namespace tint::spirv::reader {
namespace {
class SpirvReaderTest : public testing::Test {
protected:
/// Run the reader on a SPIR-V module and return the Tint IR or an error string.
/// @param spirv_asm the SPIR-V assembly to read
/// @returns the disassembled Tint IR or an error
Result<std::string> Run(std::string spirv_asm) {
// Assemble the SPIR-V input.
auto binary = Assemble(spirv_asm);
if (binary != Success) {
return binary.Failure();
}
// Read the SPIR-V to produce a core IR module.
auto ir = ReadIR(binary.Get());
if (ir != Success) {
return ir.Failure();
}
// Validate the IR module against the core dialect.
auto validated = core::ir::Validate(ir.Get());
if (validated != Success) {
return validated.Failure();
}
// Return the disassembled IR module.
return "\n" + core::ir::Disassemble(ir.Get());
}
};
TEST_F(SpirvReaderTest, UnsupportedExtension) {
auto got = Run(R"(
OpCapability Shader
OpExtension "SPV_KHR_variable_pointers"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %main "main"
OpExecutionMode %main LocalSize 1 1 1
%void = OpTypeVoid
%ep_type = OpTypeFunction %void
%main = OpFunction %void None %ep_type
%main_start = OpLabel
OpReturn
OpFunctionEnd
)");
ASSERT_NE(got, Success);
EXPECT_EQ(got.Failure().reason.Str(),
"error: SPIR-V extension 'SPV_KHR_variable_pointers' is not supported");
}
TEST_F(SpirvReaderTest, Load_VectorComponent) {
auto got = Run(R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %main "main"
OpExecutionMode %main LocalSize 1 1 1
%void = OpTypeVoid
%u32 = OpTypeInt 32 0
%vec4u = OpTypeVector %u32 4
%u32_ptr = OpTypePointer Function %u32
%vec4u_ptr = OpTypePointer Function %vec4u
%u32_2 = OpConstant %u32 2
%ep_type = OpTypeFunction %void
%main = OpFunction %void None %ep_type
%main_start = OpLabel
%var = OpVariable %vec4u_ptr Function
%access = OpAccessChain %u32_ptr %var %u32_2
%load = OpLoad %u32 %access
OpReturn
OpFunctionEnd
)");
ASSERT_EQ(got, Success);
EXPECT_EQ(got, R"(
%main = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
%b1 = block {
%2:ptr<function, vec4<u32>, read_write> = var
%3:u32 = load_vector_element %2, 2u
ret
}
}
)");
}
TEST_F(SpirvReaderTest, Store_VectorComponent) {
auto got = Run(R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %main "main"
OpExecutionMode %main LocalSize 1 1 1
%void = OpTypeVoid
%u32 = OpTypeInt 32 0
%u32_42 = OpConstant %u32 42
%vec4u = OpTypeVector %u32 4
%u32_ptr = OpTypePointer Function %u32
%vec4u_ptr = OpTypePointer Function %vec4u
%u32_2 = OpConstant %u32 2
%ep_type = OpTypeFunction %void
%main = OpFunction %void None %ep_type
%main_start = OpLabel
%var = OpVariable %vec4u_ptr Function
%access = OpAccessChain %u32_ptr %var %u32_2
OpStore %access %u32_42
OpReturn
OpFunctionEnd
)");
ASSERT_EQ(got, Success);
EXPECT_EQ(got, R"(
%main = @compute @workgroup_size(1, 1, 1) func():void -> %b1 {
%b1 = block {
%2:ptr<function, vec4<u32>, read_write> = var
store_vector_element %2, 2u, 42u
ret
}
}
)");
}
} // namespace
} // namespace tint::spirv::reader