| //===- LTO.h ----------------------------------------------------*- 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 provides a way to combine bitcode files into one COFF |
| // file by compiling them using LLVM. |
| // |
| // If LTO is in use, your input files are not in regular COFF 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 |
| // a COFF file that contains native code. This file provides that |
| // functionality. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLD_COFF_LTO_H |
| #define LLD_COFF_LTO_H |
| |
| #include "lld/Common/LLVM.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <memory> |
| #include <vector> |
| |
| namespace llvm { |
| namespace lto { |
| class LTO; |
| } |
| } |
| |
| namespace lld { |
| namespace coff { |
| |
| class BitcodeFile; |
| class InputFile; |
| class COFFLinkerContext; |
| |
| class BitcodeCompiler { |
| public: |
| BitcodeCompiler(); |
| ~BitcodeCompiler(); |
| |
| void add(BitcodeFile &f); |
| std::vector<InputFile *> compile(COFFLinkerContext &ctx); |
| |
| private: |
| std::unique_ptr<llvm::lto::LTO> ltoObj; |
| std::vector<SmallString<0>> buf; |
| std::vector<std::unique_ptr<MemoryBuffer>> files; |
| std::unique_ptr<llvm::raw_fd_ostream> indexFile; |
| llvm::DenseSet<StringRef> thinIndices; |
| }; |
| } |
| } |
| |
| #endif |