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788e6c1c16
- This code is dead, and the "right" way to get this support is to use the platform-specific linker-integrated LTO mechanisms, or the forthcoming LLVM linker. llvm-svn: 172749
115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
//===- lib/Linker/Linker.cpp - Basic Linker functionality ----------------===//
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//
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// The LLVM Compiler Infrastructure
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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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//
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// This file contains basic Linker functionality that all usages will need.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Linker.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/system_error.h"
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using namespace llvm;
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Linker::Linker(StringRef progname, StringRef modname,
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LLVMContext& C, unsigned flags):
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Context(C),
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Composite(new Module(modname, C)),
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LibPaths(),
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Flags(flags),
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Error(),
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ProgramName(progname) { }
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Linker::Linker(StringRef progname, Module* aModule, unsigned flags) :
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Context(aModule->getContext()),
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Composite(aModule),
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LibPaths(),
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Flags(flags),
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Error(),
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ProgramName(progname) { }
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Linker::~Linker() {
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delete Composite;
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}
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bool
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Linker::error(StringRef message) {
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Error = message;
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if (!(Flags&QuietErrors))
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errs() << ProgramName << ": error: " << message << "\n";
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return true;
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}
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bool
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Linker::warning(StringRef message) {
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Error = message;
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if (!(Flags&QuietWarnings))
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errs() << ProgramName << ": warning: " << message << "\n";
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return false;
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}
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void
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Linker::verbose(StringRef message) {
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if (Flags&Verbose)
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errs() << " " << message << "\n";
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}
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void
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Linker::addPath(const sys::Path& path) {
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LibPaths.push_back(path);
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}
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void
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Linker::addPaths(const std::vector<std::string>& paths) {
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for (unsigned i = 0, e = paths.size(); i != e; ++i)
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LibPaths.push_back(sys::Path(paths[i]));
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}
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void
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Linker::addSystemPaths() {
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sys::Path::GetBitcodeLibraryPaths(LibPaths);
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LibPaths.insert(LibPaths.begin(),sys::Path("./"));
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}
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Module*
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Linker::releaseModule() {
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Module* result = Composite;
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LibPaths.clear();
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Error.clear();
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Composite = 0;
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Flags = 0;
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return result;
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}
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// LoadObject - Read in and parse the bitcode file named by FN and return the
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// module it contains (wrapped in an auto_ptr), or auto_ptr<Module>() and set
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// Error if an error occurs.
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std::auto_ptr<Module>
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Linker::LoadObject(const sys::Path &FN) {
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std::string ParseErrorMessage;
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Module *Result = 0;
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OwningPtr<MemoryBuffer> Buffer;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(FN.c_str(), Buffer))
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ParseErrorMessage = "Error reading file '" + FN.str() + "'" + ": "
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+ ec.message();
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else
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Result = ParseBitcodeFile(Buffer.get(), Context, &ParseErrorMessage);
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if (Result)
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return std::auto_ptr<Module>(Result);
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Error = "Bitcode file '" + FN.str() + "' could not be loaded";
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if (ParseErrorMessage.size())
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Error += ": " + ParseErrorMessage;
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return std::auto_ptr<Module>();
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}
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