947648f502
makeErrorFile and parseMemberFiles are now used only in DarwinLdDriver.cpp. This patch moves them to that file. llvm-svn: 262423
105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
//===- lib/Driver/Driver.cpp - Linker Driver Emulator -----------*- C++ -*-===//
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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/Core/ArchiveLibraryFile.h"
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#include "lld/Core/File.h"
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#include "lld/Core/Instrumentation.h"
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#include "lld/Core/LLVM.h"
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#include "lld/Core/PassManager.h"
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#include "lld/Core/Reader.h"
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#include "lld/Core/Resolver.h"
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#include "lld/Core/Writer.h"
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#include "lld/Driver/Driver.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Option/Arg.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/Path.h"
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#include "llvm/Support/Process.h"
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#include "llvm/Support/raw_ostream.h"
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#include <mutex>
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namespace lld {
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void Driver::parseLLVMOptions(const LinkingContext &ctx) {
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// Honor -mllvm
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if (!ctx.llvmOptions().empty()) {
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unsigned numArgs = ctx.llvmOptions().size();
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auto **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] = ctx.llvmOptions()[i];
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args[numArgs + 1] = nullptr;
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llvm::cl::ParseCommandLineOptions(numArgs + 1, args);
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}
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}
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/// This is where the link is actually performed.
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bool Driver::link(LinkingContext &ctx, raw_ostream &diagnostics) {
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if (ctx.getNodes().empty())
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return false;
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for (std::unique_ptr<Node> &ie : ctx.getNodes())
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if (FileNode *node = dyn_cast<FileNode>(ie.get()))
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node->getFile()->parse();
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std::vector<std::unique_ptr<File>> internalFiles;
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ctx.createInternalFiles(internalFiles);
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for (auto i = internalFiles.rbegin(), e = internalFiles.rend(); i != e; ++i) {
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auto &members = ctx.getNodes();
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members.insert(members.begin(), llvm::make_unique<FileNode>(std::move(*i)));
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}
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// Give target a chance to add files.
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std::vector<std::unique_ptr<File>> implicitFiles;
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ctx.createImplicitFiles(implicitFiles);
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for (auto i = implicitFiles.rbegin(), e = implicitFiles.rend(); i != e; ++i) {
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auto &members = ctx.getNodes();
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members.insert(members.begin(), llvm::make_unique<FileNode>(std::move(*i)));
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}
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// Give target a chance to postprocess input files.
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// Mach-O uses this chance to move all object files before library files.
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ctx.finalizeInputFiles();
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// Do core linking.
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ScopedTask resolveTask(getDefaultDomain(), "Resolve");
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Resolver resolver(ctx);
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if (!resolver.resolve())
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return false;
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std::unique_ptr<SimpleFile> merged = resolver.resultFile();
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resolveTask.end();
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// Run passes on linked atoms.
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ScopedTask passTask(getDefaultDomain(), "Passes");
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PassManager pm;
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ctx.addPasses(pm);
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if (std::error_code ec = pm.runOnFile(*merged)) {
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diagnostics << "Failed to write file '" << ctx.outputPath()
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<< "': " << ec.message() << "\n";
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return false;
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}
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passTask.end();
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// Give linked atoms to Writer to generate output file.
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ScopedTask writeTask(getDefaultDomain(), "Write");
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if (std::error_code ec = ctx.writeFile(*merged)) {
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diagnostics << "Failed to write file '" << ctx.outputPath()
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<< "': " << ec.message() << "\n";
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return false;
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}
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return true;
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}
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} // namespace lld
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