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88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
//===-- llvm-split: command line tool for testing module splitter ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This program can be used to test the llvm::SplitModule function.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Bitcode/BitcodeWriter.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/IRReader/IRReader.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Transforms/Utils/SplitModule.h"
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using namespace llvm;
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static cl::OptionCategory SplitCategory("Split Options");
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static cl::opt<std::string> InputFilename(cl::Positional,
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cl::desc("<input bitcode file>"),
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cl::init("-"),
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cl::value_desc("filename"),
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cl::cat(SplitCategory));
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static cl::opt<std::string> OutputFilename("o",
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cl::desc("Override output filename"),
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cl::value_desc("filename"),
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cl::cat(SplitCategory));
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static cl::opt<unsigned> NumOutputs("j", cl::Prefix, cl::init(2),
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cl::desc("Number of output files"),
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cl::cat(SplitCategory));
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static cl::opt<bool>
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PreserveLocals("preserve-locals", cl::Prefix, cl::init(false),
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cl::desc("Split without externalizing locals"),
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cl::cat(SplitCategory));
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int main(int argc, char **argv) {
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LLVMContext Context;
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SMDiagnostic Err;
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cl::HideUnrelatedOptions({&SplitCategory, &getColorCategory()});
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cl::ParseCommandLineOptions(argc, argv, "LLVM module splitter\n");
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std::unique_ptr<Module> M = parseIRFile(InputFilename, Err, Context);
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if (!M) {
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Err.print(argv[0], errs());
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return 1;
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}
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unsigned I = 0;
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SplitModule(
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*M, NumOutputs,
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[&](std::unique_ptr<Module> MPart) {
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std::error_code EC;
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std::unique_ptr<ToolOutputFile> Out(new ToolOutputFile(
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OutputFilename + utostr(I++), EC, sys::fs::OF_None));
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if (EC) {
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errs() << EC.message() << '\n';
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exit(1);
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}
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if (verifyModule(*MPart, &errs())) {
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errs() << "Broken module!\n";
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exit(1);
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}
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WriteBitcodeToFile(*MPart, Out->os());
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// Declare success.
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Out->keep();
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},
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PreserveLocals);
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return 0;
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}
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