lib/Interpreter/DeviceOffload.h

//===----------- DeviceOffload.h - Device Offloading ------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements classes required for offloading to CUDA devices.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_INTERPRETER_DEVICE_OFFLOAD_H
#define LLVM_CLANG_LIB_INTERPRETER_DEVICE_OFFLOAD_H

#include "IncrementalParser.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/VirtualFileSystem.h"

namespace clang {

class IncrementalCUDADeviceParser : public IncrementalParser {
public:
  IncrementalCUDADeviceParser(
      Interpreter &Interp, std::unique_ptr<CompilerInstance> Instance,
      IncrementalParser &HostParser, llvm::LLVMContext &LLVMCtx,
      llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS,
      llvm::Error &Err);

  llvm::Expected<PartialTranslationUnit &>
  Parse(llvm::StringRef Input) override;

  // Generate PTX for the last PTU
  llvm::Expected<llvm::StringRef> GeneratePTX();

  // Generate fatbinary contents in memory
  llvm::Error GenerateFatbinary();

  ~IncrementalCUDADeviceParser();

protected:
  IncrementalParser &HostParser;
  int SMVersion;
  llvm::SmallString<1024> PTXCode;
  llvm::SmallVector<char, 1024> FatbinContent;
  llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS;
};

} // namespace clang

#endif // LLVM_CLANG_LIB_INTERPRETER_DEVICE_OFFLOAD_H