| //===- lto-bugpoing.cpp - The lto-bugpoint driver -------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // lto-bugpoint tool identifies minmal set of bitcode files that is causing |
| // failure when Link Time Optimization is enabled. The failure is identified |
| // using developer provided validation script. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LTOBugPoint.h" |
| #include <iostream> |
| #include <fstream> |
| |
| int main(int argc, char **argv) { |
| try { |
| |
| if (argc != 4) { |
| std::cerr << "Invalid number of lto-bugpoint arguments!\n"; |
| return 1; |
| } |
| |
| std::ios::openmode input_mode = std::ios::in; |
| |
| // First argument is linker command line options file. This text file |
| // is a list of linker command line options, one option per line. |
| // First line always list the absolute path to invoke the linker. |
| std::istream *LinkerArgsFile = new std::ifstream(argv[1], input_mode); |
| if (!LinkerArgsFile->good()) { |
| std::cerr << argv[0] << ": error opening " << argv[1] << "!\n"; |
| return 1; |
| } |
| |
| // Second argment is a text file that includes the linker input |
| // file paths, one input file path per line. |
| std::istream *LinkerInputsFile = new std::ifstream(argv[2], input_mode); |
| if (!LinkerInputsFile->good()) { |
| std::cerr << argv[0] << ": error opening " << argv[2] << "!\n"; |
| delete LinkerArgsFile; |
| return 1; |
| } |
| |
| // Third argument is absolute path to the validation script. This |
| // script is used to validate LTO error under investigation. |
| std::string ValidationScript = argv[3]; |
| LTOBugPoint bugFinder(*LinkerArgsFile, *LinkerInputsFile); |
| |
| llvm::SmallVector<std::string, 4> TroubleMakers; |
| if (!bugFinder.findTroubleMakers(TroubleMakers, ValidationScript)) { |
| std::cerr << "lto-bugpoint:" << bugFinder.getErrMsg() << "\n"; |
| return 1; |
| } |
| |
| return 0; |
| } catch (const std::string& msg) { |
| std::cerr << argv[0] << ": " << msg << "\n"; |
| } catch (...) { |
| std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n"; |
| } |
| return 1; |
| } |