Start writing lto-bugpoint tool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53774 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto-bugpoint/lto-bugpoint.cpp b/tools/lto-bugpoint/lto-bugpoint.cpp
new file mode 100644
index 0000000..8633415
--- /dev/null
+++ b/tools/lto-bugpoint/lto-bugpoint.cpp
@@ -0,0 +1,67 @@
+//===- 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::istream *ValidationScriptFile = new std::ifstream(argv[3], input_mode);
+ if (!ValidationScriptFile->good()) {
+ std::cerr << argv[0] << ": error opening " << argv[3] << "!\n";
+ delete LinkerArgsFile;
+ delete LinkerInputsFile;
+ return 1;
+ }
+
+ LTOBugPoint bugFinder(*LinkerArgsFile, *LinkerInputsFile);
+
+ 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;
+}