ffd1746d03
This commit merges the latest LLVM sources from the vendor space. It also updates the build glue to match the new sources. Clang's version number is changed to match LLVM's, which means /usr/include/clang/2.0 has been renamed to /usr/include/clang/2.8. Obtained from: projects/clangbsd
145 lines
4.6 KiB
C++
145 lines
4.6 KiB
C++
//===- llvm-link.cpp - Low-level LLVM linker ------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This utility may be invoked in the following manner:
|
|
// llvm-link a.bc b.bc c.bc -o x.bc
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Linker.h"
|
|
#include "llvm/LLVMContext.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Analysis/Verifier.h"
|
|
#include "llvm/Bitcode/ReaderWriter.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/PrettyStackTrace.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Support/SystemUtils.h"
|
|
#include "llvm/Support/IRReader.h"
|
|
#include "llvm/System/Signals.h"
|
|
#include "llvm/System/Path.h"
|
|
#include <memory>
|
|
using namespace llvm;
|
|
|
|
static cl::list<std::string>
|
|
InputFilenames(cl::Positional, cl::OneOrMore,
|
|
cl::desc("<input bitcode files>"));
|
|
|
|
static cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Override output filename"), cl::init("-"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<bool>
|
|
Force("f", cl::desc("Enable binary output on terminals"));
|
|
|
|
static cl::opt<bool>
|
|
OutputAssembly("S",
|
|
cl::desc("Write output as LLVM assembly"), cl::Hidden);
|
|
|
|
static cl::opt<bool>
|
|
Verbose("v", cl::desc("Print information about actions taken"));
|
|
|
|
static cl::opt<bool>
|
|
DumpAsm("d", cl::desc("Print assembly as linked"), cl::Hidden);
|
|
|
|
// LoadFile - Read the specified bitcode file in and return it. This routine
|
|
// searches the link path for the specified file to try to find it...
|
|
//
|
|
static inline std::auto_ptr<Module> LoadFile(const char *argv0,
|
|
const std::string &FN,
|
|
LLVMContext& Context) {
|
|
sys::Path Filename;
|
|
if (!Filename.set(FN)) {
|
|
errs() << "Invalid file name: '" << FN << "'\n";
|
|
return std::auto_ptr<Module>();
|
|
}
|
|
|
|
SMDiagnostic Err;
|
|
if (Verbose) errs() << "Loading '" << Filename.c_str() << "'\n";
|
|
Module* Result = 0;
|
|
|
|
const std::string &FNStr = Filename.str();
|
|
Result = ParseIRFile(FNStr, Err, Context);
|
|
if (Result) return std::auto_ptr<Module>(Result); // Load successful!
|
|
|
|
Err.Print(argv0, errs());
|
|
return std::auto_ptr<Module>();
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
// Print a stack trace if we signal out.
|
|
sys::PrintStackTraceOnErrorSignal();
|
|
PrettyStackTraceProgram X(argc, argv);
|
|
|
|
LLVMContext &Context = getGlobalContext();
|
|
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
|
|
cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
|
|
|
|
unsigned BaseArg = 0;
|
|
std::string ErrorMessage;
|
|
|
|
std::auto_ptr<Module> Composite(LoadFile(argv[0],
|
|
InputFilenames[BaseArg], Context));
|
|
if (Composite.get() == 0) {
|
|
errs() << argv[0] << ": error loading file '"
|
|
<< InputFilenames[BaseArg] << "'\n";
|
|
return 1;
|
|
}
|
|
|
|
for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
|
|
std::auto_ptr<Module> M(LoadFile(argv[0],
|
|
InputFilenames[i], Context));
|
|
if (M.get() == 0) {
|
|
errs() << argv[0] << ": error loading file '" <<InputFilenames[i]<< "'\n";
|
|
return 1;
|
|
}
|
|
|
|
if (Verbose) errs() << "Linking in '" << InputFilenames[i] << "'\n";
|
|
|
|
if (Linker::LinkModules(Composite.get(), M.get(), &ErrorMessage)) {
|
|
errs() << argv[0] << ": link error in '" << InputFilenames[i]
|
|
<< "': " << ErrorMessage << "\n";
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// TODO: Iterate over the -l list and link in any modules containing
|
|
// global symbols that have not been resolved so far.
|
|
|
|
if (DumpAsm) errs() << "Here's the assembly:\n" << *Composite;
|
|
|
|
std::string ErrorInfo;
|
|
std::auto_ptr<raw_ostream>
|
|
Out(new raw_fd_ostream(OutputFilename.c_str(), ErrorInfo,
|
|
raw_fd_ostream::F_Binary));
|
|
if (!ErrorInfo.empty()) {
|
|
errs() << ErrorInfo << '\n';
|
|
return 1;
|
|
}
|
|
|
|
// Make sure that the Out file gets unlinked from the disk if we get a
|
|
// SIGINT
|
|
if (OutputFilename != "-")
|
|
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
|
|
|
|
if (verifyModule(*Composite)) {
|
|
errs() << argv[0] << ": linked module is broken!\n";
|
|
return 1;
|
|
}
|
|
|
|
if (Verbose) errs() << "Writing bitcode...\n";
|
|
if (OutputAssembly) {
|
|
*Out << *Composite;
|
|
} else if (Force || !CheckBitcodeOutputToConsole(*Out, true))
|
|
WriteBitcodeToFile(Composite.get(), *Out);
|
|
|
|
return 0;
|
|
}
|