cfe59fd0d3
This removes Target and moves the functionality it had over to TargetInfo. This also simplifies LinkerInput by removing the InputKind. This will be handled elsewhere. llvm-svn: 174589
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
//===- lib/Driver/LinkerInvocation.cpp - Linker Invocation ----------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lld/Driver/LinkerInvocation.h"
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#include "lld/Core/InputFiles.h"
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#include "lld/Core/PassManager.h"
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#include "lld/Core/Resolver.h"
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#include "lld/ReaderWriter/ELFTargetInfo.h"
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#include "lld/ReaderWriter/Reader.h"
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#include "lld/ReaderWriter/Writer.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace lld;
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namespace {
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std::unique_ptr<TargetInfo> createTargetInfo(const LinkerOptions &lo) {
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return ELFTargetInfo::create(lo);
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}
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}
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void LinkerInvocation::operator()() {
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// Honor -mllvm
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if (!_options._llvmArgs.empty()) {
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unsigned NumArgs = _options._llvmArgs.size();
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const char **Args = new const char*[NumArgs + 2];
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Args[0] = "lld (LLVM option parsing)";
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for (unsigned i = 0; i != NumArgs; ++i)
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Args[i + 1] = _options._llvmArgs[i].c_str();
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Args[NumArgs + 1] = 0;
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llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args);
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}
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// Create target.
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std::unique_ptr<TargetInfo> targetInfo(createTargetInfo(_options));
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if (!targetInfo) {
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llvm::errs() << "Failed to create target for " << _options._target
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<< "\n";
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return;
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}
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// Read inputs
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InputFiles inputs;
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for (const auto &input : _options._input) {
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auto reader = targetInfo->getReader(input);
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if (error_code ec = reader) {
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llvm::errs() << "Failed to get reader for: " << input.getPath() << ": "
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<< ec.message() << "\n";
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return;
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}
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auto buffer = input.getBuffer();
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if (error_code ec = buffer) {
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llvm::errs() << "Failed to read file: " << input.getPath() << ": "
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<< ec.message() << "\n";
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return;
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}
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std::vector<std::unique_ptr<File>> files;
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if (llvm::error_code ec = reader->readFile(
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buffer->getBufferIdentifier(), files)) {
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llvm::errs() << "Failed to read file: " << input.getPath() << ": "
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<< ec.message() << "\n";
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return;
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}
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inputs.appendFiles(files);
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}
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auto writer = targetInfo->getWriter();
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// Give writer a chance to add files
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writer->addFiles(inputs);
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Resolver resolver(*targetInfo, inputs);
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resolver.resolve();
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MutableFile &merged = resolver.resultFile();
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PassManager pm;
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targetInfo->addPasses(pm);
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pm.runOnFile(merged);
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if (error_code ec = writer) {
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llvm::errs() << "Failed to get writer: " << ec.message() << ".\n";
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return;
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}
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if (error_code ec = writer->writeFile(merged, _options._outputPath))
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llvm::errs() << "Failed to write file: " << ec.message() << "\n";
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}
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