forked from OSchip/llvm-project
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
//===- LTO.h ----------------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Linker
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides a way to combine bitcode files into one ELF
|
|
// file by compiling them using LLVM.
|
|
//
|
|
// If LTO is in use, your input files are not in regular ELF files
|
|
// but instead LLVM bitcode files. In that case, the linker has to
|
|
// convert bitcode files into the native format so that we can create
|
|
// an ELF file that contains native code. This file provides that
|
|
// functionality.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_ELF_LTO_H
|
|
#define LLD_ELF_LTO_H
|
|
|
|
#include "lld/Core/LLVM.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringSet.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/Linker/IRMover.h"
|
|
|
|
namespace lld {
|
|
namespace elf {
|
|
|
|
class BitcodeFile;
|
|
class InputFile;
|
|
|
|
class BitcodeCompiler {
|
|
public:
|
|
void add(BitcodeFile &F);
|
|
std::unique_ptr<InputFile> compile();
|
|
|
|
BitcodeCompiler()
|
|
: Combined(new llvm::Module("ld-temp.o", Context)), Mover(*Combined) {}
|
|
|
|
private:
|
|
llvm::TargetMachine *getTargetMachine();
|
|
|
|
llvm::LLVMContext Context;
|
|
std::unique_ptr<llvm::Module> Combined;
|
|
llvm::IRMover Mover;
|
|
SmallString<0> OwningData;
|
|
std::unique_ptr<MemoryBuffer> MB;
|
|
llvm::StringSet<> InternalizedSyms;
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|