bugpoint.cpp revision 67b36e4a2fba4931747cad61979aa92d43002ccc 
1//===- bugpoint.cpp - The LLVM BugPoint utility ---------------------------===//
2//
3// This program is an automated compiler debugger tool.  It is used to narrow
4// down miscompilations and crash problems to a specific pass in the compiler,
5// and the specific Module or Function input that is causing the problem.
6//
7//===----------------------------------------------------------------------===//
8
9#include "BugDriver.h"
10#include "llvm/Support/PassNameParser.h"
11#include "Support/CommandLine.h"
12#include "Config/unistd.h"
13#include <sys/resource.h>
14
15static cl::list<std::string>
16InputFilenames(cl::Positional, cl::OneOrMore,
17               cl::desc("<input llvm ll/bc files>"));
18
19// The AnalysesList is automatically populated with registered Passes by the
20// PassNameParser.
21//
22static cl::list<const PassInfo*, bool, PassNameParser>
23PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
24
25int main(int argc, char **argv) {
26  cl::ParseCommandLineOptions(argc, argv);
27
28  BugDriver D(argv[0]);
29  if (D.addSources(InputFilenames)) return 1;
30  D.addPasses(PassList.begin(), PassList.end());
31
32  // Bugpoint has the ability of generating a plethora of core files, so to
33  // avoid filling up the disk, set the max core file size to 0.
34  struct rlimit rlim;
35  rlim.rlim_cur = rlim.rlim_max = 0;
36  int res = setrlimit(RLIMIT_CORE, &rlim);
37  if (res < 0) {
38    // setrlimit() may have failed, but we're not going to let that stop us
39    perror("setrlimit: RLIMIT_CORE");
40  }
41
42  return D.run();
43}
44