llvm/llvm/tools/llvm-modextract/llvm-modextract.cpp

//===-- llvm-modextract.cpp - LLVM module extractor utility ---------------===//
//
// 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 program is for testing features that rely on multi-module bitcode files.
// It takes a multi-module bitcode file, extracts one of the modules and writes
// it to the output file.
//
//===----------------------------------------------------------------------===//

#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/WithColor.h"

usingnamespacellvm;

static cl::OptionCategory ModextractCategory("Modextract Options");

static cl::opt<bool>
    BinaryExtract("b", cl::desc("Whether to perform binary extraction"),
                  cl::cat(ModextractCategory));

static cl::opt<std::string> OutputFilename("o", cl::Required,
                                           cl::desc("Output filename"),
                                           cl::value_desc("filename"),
                                           cl::cat(ModextractCategory));

static cl::opt<std::string> InputFilename(cl::Positional,
                                          cl::desc("<input bitcode>"),
                                          cl::init("-"),
                                          cl::cat(ModextractCategory));

static cl::opt<unsigned> ModuleIndex("n", cl::Required,
                                     cl::desc("Index of module to extract"),
                                     cl::value_desc("index"),
                                     cl::cat(ModextractCategory));

int main(int argc, char **argv) { … }