forked from OSchip/llvm-project
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
//===--Passes/RoundTripYAMLPass.cpp - Write YAML file/Read it back---------===//
|
|
//
|
|
// The LLVM Linker
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lld/Core/Instrumentation.h"
|
|
#include "lld/Core/Simple.h"
|
|
#include "lld/Passes/RoundTripYAMLPass.h"
|
|
#include "lld/ReaderWriter/Writer.h"
|
|
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/Path.h"
|
|
|
|
#include <memory>
|
|
|
|
using namespace lld;
|
|
|
|
#define DEBUG_TYPE "RoundTripYAMLPass"
|
|
|
|
/// Perform the actual pass
|
|
void RoundTripYAMLPass::perform(std::unique_ptr<MutableFile> &mergedFile) {
|
|
ScopedTask task(getDefaultDomain(), "RoundTripYAMLPass");
|
|
std::unique_ptr<Writer> yamlWriter = createWriterYAML(_context);
|
|
SmallString<128> tmpYAMLFile;
|
|
// Separate the directory from the filename
|
|
StringRef outFile = llvm::sys::path::filename(_context.outputPath());
|
|
if (llvm::sys::fs::createTemporaryFile(outFile, "yaml", tmpYAMLFile))
|
|
return;
|
|
DEBUG_WITH_TYPE("RoundTripYAMLPass", {
|
|
llvm::dbgs() << "RoundTripYAMLPass: " << tmpYAMLFile << "\n";
|
|
});
|
|
|
|
// The file that is written would be kept around if there is a problem
|
|
// writing to the file or when reading atoms back from the file.
|
|
yamlWriter->writeFile(*mergedFile, tmpYAMLFile.str());
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
|
|
MemoryBuffer::getFile(tmpYAMLFile.str());
|
|
if (!mb)
|
|
return;
|
|
|
|
std::error_code ec = _context.registry().parseFile(mb.get(), _yamlFile);
|
|
if (ec) {
|
|
// Note: we need a way for Passes to report errors.
|
|
llvm_unreachable("yaml reader not registered or read error");
|
|
}
|
|
File *objFile = _yamlFile[0].get();
|
|
mergedFile.reset(new SimpleFileWrapper(_context, *objFile));
|
|
llvm::sys::fs::remove(tmpYAMLFile.str());
|
|
}
|