| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/Bitcode/ReaderWriter.h" |
| #include "llvm/Function.h" |
| #include "llvm/GlobalVariable.h" |
| #include "llvm/LLVMContext.h" |
| #include "llvm/Module.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/ManagedStatic.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/Support/system_error.h" |
| #include "llvm/Support/ToolOutputFile.h" |
| |
| using namespace llvm; |
| |
| static cl::opt<std::string> |
| InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-")); |
| |
| static cl::opt<std::string> |
| OutputFilename("o", cl::desc("Output filename"), |
| cl::value_desc("filename")); |
| |
| int main(int argc, char **argv) { |
| LLVMContext &Context = getGlobalContext(); |
| llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. |
| |
| cl::ParseCommandLineOptions(argc, argv, "libclc builtin preparation tool\n"); |
| |
| std::string ErrorMessage; |
| std::auto_ptr<Module> M; |
| |
| { |
| OwningPtr<MemoryBuffer> BufferPtr; |
| if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) |
| ErrorMessage = ec.message(); |
| else |
| M.reset(ParseBitcodeFile(BufferPtr.get(), Context, &ErrorMessage)); |
| } |
| |
| if (M.get() == 0) { |
| errs() << argv[0] << ": "; |
| if (ErrorMessage.size()) |
| errs() << ErrorMessage << "\n"; |
| else |
| errs() << "bitcode didn't read correctly.\n"; |
| return 1; |
| } |
| |
| // Set linkage of every external definition to linkonce_odr. |
| for (Module::iterator i = M->begin(), e = M->end(); i != e; ++i) { |
| if (!i->isDeclaration() && i->getLinkage() == GlobalValue::ExternalLinkage) |
| i->setLinkage(GlobalValue::LinkOnceODRLinkage); |
| } |
| |
| for (Module::global_iterator i = M->global_begin(), e = M->global_end(); |
| i != e; ++i) { |
| if (!i->isDeclaration() && i->getLinkage() == GlobalValue::ExternalLinkage) |
| i->setLinkage(GlobalValue::LinkOnceODRLinkage); |
| } |
| |
| if (OutputFilename.empty()) { |
| errs() << "no output file\n"; |
| return 1; |
| } |
| |
| std::string ErrorInfo; |
| OwningPtr<tool_output_file> Out |
| (new tool_output_file(OutputFilename.c_str(), ErrorInfo, |
| raw_fd_ostream::F_Binary)); |
| if (!ErrorInfo.empty()) { |
| errs() << ErrorInfo << '\n'; |
| exit(1); |
| } |
| |
| WriteBitcodeToFile(M.get(), Out->os()); |
| |
| // Declare success. |
| Out->keep(); |
| return 0; |
| } |
| |