xref: /llvm-project-15.0.7/mlir/test/lib/Dialect/GPU/TestConvertGPUKernelToCubin.cpp (revision 3fef2d26)

//===- TestConvertGPUKernelToCubin.cpp - Test gpu kernel cubin lowering ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "mlir/Dialect/GPU/Passes.h"

#include "mlir/Pass/Pass.h"
#include "mlir/Target/LLVMIR/Dialect/NVVM/NVVMToLLVMIRTranslation.h"
#include "mlir/Target/LLVMIR/Export.h"
#include "llvm/Support/TargetSelect.h"

using namespace mlir;

#if MLIR_CUDA_CONVERSIONS_ENABLED
namespace {
class TestSerializeToCubinPass
    : public PassWrapper<TestSerializeToCubinPass, gpu::SerializeToBlobPass> {
public:
  TestSerializeToCubinPass();

private:
  void getDependentDialects(DialectRegistry &registry) const override;

  // Serializes PTX to CUBIN.
  std::unique_ptr<std::vector<char>>
  serializeISA(const std::string &isa) override;
};
} // namespace

TestSerializeToCubinPass::TestSerializeToCubinPass() {
  this->triple = "nvptx64-nvidia-cuda";
  this->chip = "sm_35";
  this->features = "+ptx60";
}

void TestSerializeToCubinPass::getDependentDialects(
    DialectRegistry &registry) const {
  registerNVVMDialectTranslation(registry);
  gpu::SerializeToBlobPass::getDependentDialects(registry);
}

std::unique_ptr<std::vector<char>>
TestSerializeToCubinPass::serializeISA(const std::string &) {
  std::string data = "CUBIN";
  return std::make_unique<std::vector<char>>(data.begin(), data.end());
}

namespace mlir {
namespace test {
// Register test pass to serialize GPU module to a CUBIN binary annotation.
void registerTestGpuSerializeToCubinPass() {
  PassRegistration<TestSerializeToCubinPass> registerSerializeToCubin(
      "test-gpu-to-cubin",
      "Lower GPU kernel function to CUBIN binary annotations", [] {
        // Initialize LLVM NVPTX backend.
        LLVMInitializeNVPTXTarget();
        LLVMInitializeNVPTXTargetInfo();
        LLVMInitializeNVPTXTargetMC();
        LLVMInitializeNVPTXAsmPrinter();

        return std::make_unique<TestSerializeToCubinPass>();
      });
}
} // namespace test
} // namespace mlir
#endif // MLIR_CUDA_CONVERSIONS_ENABLED