bugpoint.cpp revision 551ccae044b0ff658fe629dd67edd5ffe75d10e8 
1//===- bugpoint.cpp - The LLVM Bugpoint utility ---------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file was developed by the LLVM research group and is distributed under
6// the University of Illinois Open Source License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This program is an automated compiler debugger tool.  It is used to narrow
11// down miscompilations and crash problems to a specific pass in the compiler,
12// and the specific Module or Function input that is causing the problem.
13//
14//===----------------------------------------------------------------------===//
15
16#include "BugDriver.h"
17#include "llvm/Support/PassNameParser.h"
18#include "llvm/Support/ToolRunner.h"
19#include "llvm/System/SysConfig.h"
20#include "llvm/Support/CommandLine.h"
21#include "llvm/Support/PluginLoader.h"
22#include "llvm/System/Signals.h"
23#include "llvm/Config/unistd.h"
24//#include <sys/resource.h>
25using namespace llvm;
26
27static cl::list<std::string>
28InputFilenames(cl::Positional, cl::OneOrMore,
29               cl::desc("<input llvm ll/bc files>"));
30
31// The AnalysesList is automatically populated with registered Passes by the
32// PassNameParser.
33//
34static cl::list<const PassInfo*, bool, PassNameParser>
35PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
36
37int main(int argc, char **argv) {
38  cl::ParseCommandLineOptions(argc, argv,
39                              " LLVM automatic testcase reducer. See\nhttp://"
40                              "llvm.cs.uiuc.edu/docs/CommandGuide/bugpoint.html"
41                              " for more information.\n");
42  sys::PrintStackTraceOnErrorSignal();
43
44  BugDriver D(argv[0]);
45  if (D.addSources(InputFilenames)) return 1;
46  D.addPasses(PassList.begin(), PassList.end());
47
48  // Bugpoint has the ability of generating a plethora of core files, so to
49  // avoid filling up the disk, we prevent it
50  sys::PreventCoreFiles();
51
52  try {
53    return D.run();
54  } catch (ToolExecutionError &TEE) {
55    std::cerr << "Tool execution error: " << TEE.what() << '\n';
56    return 1;
57  } catch (...) {
58    std::cerr << "Whoops, an exception leaked out of bugpoint.  "
59              << "This is a bug in bugpoint!\n";
60    return 1;
61  }
62}
63