xref: /llvm-project-15.0.7/llvm/lib/Bitcode/Writer/BitWriter.cpp (revision f3ebc3f3)

//===-- BitWriter.cpp -----------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm-c/BitWriter.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include <fstream>

using namespace llvm;


/*===-- Operations on modules ---------------------------------------------===*/

int LLVMWriteBitcodeToFile(LLVMModuleRef M, const char *Path) {
  std::ofstream OS(Path, std::ios_base::out|std::ios::trunc|std::ios::binary);

  if (!OS.fail())
    WriteBitcodeToFile(unwrap(M), OS);

  if (OS.fail())
    return -1;

  return 0;
}

#ifdef __GNUC__
#include <ext/stdio_filebuf.h>

// FIXME: Control this with configure? Provide some portable abstraction in
// libSystem? As is, the user will just get a linker error if they use this on
// non-GCC. Some C++ stdlibs even have ofstream::ofstream(int fd).
int LLVMWriteBitcodeToFileHandle(LLVMModuleRef M, int FileHandle) {
  __gnu_cxx::stdio_filebuf<char> Buffer(FileHandle, std::ios_base::out |
                                                    std::ios::trunc |
                                                    std::ios::binary);
  std::ostream OS(&Buffer);

  if (!OS.fail())
    WriteBitcodeToFile(unwrap(M), OS);

  if (OS.fail())
    return -1;

  return 0;
}

#endif