bugpoint.cpp revision 51163306ab0c51f1103139200cadb8e3fa6bfd18 
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/Support/CommandLine.h"
20#include "llvm/Support/PluginLoader.h"
21#include "llvm/System/Process.h"
22#include "llvm/System/Signals.h"
23using namespace llvm;
24
25static cl::list<std::string>
26InputFilenames(cl::Positional, cl::OneOrMore,
27               cl::desc("<input llvm ll/bc files>"));
28
29// The AnalysesList is automatically populated with registered Passes by the
30// PassNameParser.
31//
32static cl::list<const PassInfo*, bool, PassNameParser>
33PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
34
35int main(int argc, char **argv) {
36  cl::ParseCommandLineOptions(argc, argv,
37                              " LLVM automatic testcase reducer. See\nhttp://"
38                              "llvm.cs.uiuc.edu/docs/CommandGuide/bugpoint.html"
39                              " for more information.\n");
40  sys::PrintStackTraceOnErrorSignal();
41
42  BugDriver D(argv[0]);
43  if (D.addSources(InputFilenames)) return 1;
44  D.addPasses(PassList.begin(), PassList.end());
45
46  // Bugpoint has the ability of generating a plethora of core files, so to
47  // avoid filling up the disk, we prevent it
48  sys::Process::PreventCoreFiles();
49
50  try {
51    return D.run();
52  } catch (ToolExecutionError &TEE) {
53    std::cerr << "Tool execution error: " << TEE.what() << '\n';
54    return 1;
55  } catch (...) {
56    std::cerr << "Whoops, an exception leaked out of bugpoint.  "
57              << "This is a bug in bugpoint!\n";
58    return 1;
59  }
60}
61