bugpoint.cpp revision f9aaae06cd2109082cda2b09ef3f23e0e1cff47b 
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
35/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
36bool llvm::BugpointIsInterrupted = false;
37
38static void BugpointInterruptFunction() {
39  BugpointIsInterrupted = true;
40}
41
42int main(int argc, char **argv) {
43  cl::ParseCommandLineOptions(argc, argv,
44                              " LLVM automatic testcase reducer. See\nhttp://"
45                              "llvm.cs.uiuc.edu/docs/CommandGuide/bugpoint.html"
46                              " for more information.\n");
47  sys::PrintStackTraceOnErrorSignal();
48  sys::SetInterruptFunction(BugpointInterruptFunction);
49
50  BugDriver D(argv[0]);
51  if (D.addSources(InputFilenames)) return 1;
52  D.addPasses(PassList.begin(), PassList.end());
53
54  // Bugpoint has the ability of generating a plethora of core files, so to
55  // avoid filling up the disk, we prevent it
56  sys::Process::PreventCoreFiles();
57
58  try {
59    return D.run();
60  } catch (ToolExecutionError &TEE) {
61    std::cerr << "Tool execution error: " << TEE.what() << '\n';
62  } catch (const std::string& msg) {
63    std::cerr << argv[0] << ": " << msg << "\n";
64  } catch (...) {
65    std::cerr << "Whoops, an exception leaked out of bugpoint.  "
66              << "This is a bug in bugpoint!\n";
67  }
68  return 1;
69}
70