diff options
Diffstat (limited to 'contrib/llvm/tools/llvm-link')
| -rw-r--r-- | contrib/llvm/tools/llvm-link/CMakeLists.txt | 5 | ||||
| -rw-r--r-- | contrib/llvm/tools/llvm-link/Makefile | 17 | ||||
| -rw-r--r-- | contrib/llvm/tools/llvm-link/llvm-link.cpp | 144 |
3 files changed, 166 insertions, 0 deletions
diff --git a/contrib/llvm/tools/llvm-link/CMakeLists.txt b/contrib/llvm/tools/llvm-link/CMakeLists.txt new file mode 100644 index 000000000000..11933f7f959e --- /dev/null +++ b/contrib/llvm/tools/llvm-link/CMakeLists.txt @@ -0,0 +1,5 @@ +set(LLVM_LINK_COMPONENTS linker bitreader bitwriter asmparser) + +add_llvm_tool(llvm-link + llvm-link.cpp + ) diff --git a/contrib/llvm/tools/llvm-link/Makefile b/contrib/llvm/tools/llvm-link/Makefile new file mode 100644 index 000000000000..26370187c55f --- /dev/null +++ b/contrib/llvm/tools/llvm-link/Makefile @@ -0,0 +1,17 @@ +##===- tools/llvm-link/Makefile ----------------------------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## +LEVEL = ../.. + +TOOLNAME = llvm-link +LINK_COMPONENTS = linker bitreader bitwriter asmparser + +# This tool has no plugins, optimize startup time. +TOOL_NO_EXPORTS = 1 + +include $(LEVEL)/Makefile.common diff --git a/contrib/llvm/tools/llvm-link/llvm-link.cpp b/contrib/llvm/tools/llvm-link/llvm-link.cpp new file mode 100644 index 000000000000..f7dad3da5f61 --- /dev/null +++ b/contrib/llvm/tools/llvm-link/llvm-link.cpp @@ -0,0 +1,144 @@ +//===- 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; +} |