//===- 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/Common/LLVM.h" #include "llvm/ADT/DenseSet.h" #include "llvm/ADT/SmallString.h" #include <memory> #include <vector> namespace llvm { namespace lto { class LTO; } } // namespace llvm namespace lld { namespace elf { class BitcodeFile; class InputFile; class BitcodeCompiler { public: BitcodeCompiler(); ~BitcodeCompiler(); void add(BitcodeFile &F); std::vector<InputFile *> compile(); private: std::unique_ptr<llvm::lto::LTO> LTOObj; std::vector<SmallString<0>> Buff; std::vector<std::unique_ptr<MemoryBuffer>> Files; llvm::DenseSet<StringRef> UsedStartStop; }; } // namespace elf } // namespace lld #endif |