Make sure this tool links in all of libVMCore.a because it can --load

[oota-llvm.git] / tools / bugpoint / bugpoint.cpp

diff --git a/tools/bugpoint/bugpoint.cpp b/tools/bugpoint/bugpoint.cpp
index 25fe1a25245fe04c7b88992952fd9a5d39deeb2f..21a462318124ae766c4b415cd623f2957a5a6292 100644 (file)
--- a/tools/bugpoint/bugpoint.cpp
+++ b/tools/bugpoint/bugpoint.cpp
@@ -1,4 +1,11 @@
-//===- bugpoint.cpp - The LLVM BugPoint utility ---------------------------===//
+//===- bugpoint.cpp - The LLVM Bugpoint utility ---------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
 //
 // This program is an automated compiler debugger tool.  It is used to narrow
 // down miscompilations and crash problems to a specific pass in the compiler,
@@ -7,10 +14,23 @@
 //===----------------------------------------------------------------------===//
 
 #include "BugDriver.h"
+#include "ToolRunner.h"
+#include "llvm/Analysis/LinkAllAnalyses.h"
+#include "llvm/Transforms/LinkAllPasses.h"
 #include "llvm/Support/PassNameParser.h"
-#include "Support/CommandLine.h"
-#include "Config/unistd.h"
-#include <sys/resource.h>
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/PluginLoader.h"
+#include "llvm/System/Process.h"
+#include "llvm/System/Signals.h"
+#include "llvm/LinkAllVMCore.h"
+using namespace llvm;
+
+// AsChild - Specifies that this invocation of bugpoint is being generated
+// from a parent process. It is not intended to be used by users so the 
+// option is hidden.
+static cl::opt<bool> 
+  AsChild("as-child", cl::desc("Run bugpoint as child process"), 
+          cl::ReallyHidden);
 
 static cl::list<std::string>
 InputFilenames(cl::Positional, cl::OneOrMore,
@@ -22,22 +42,38 @@ InputFilenames(cl::Positional, cl::OneOrMore,
 static cl::list<const PassInfo*, bool, PassNameParser>
 PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
 
-int main(int argc, char **argv) {
-  cl::ParseCommandLineOptions(argc, argv);
+/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
+bool llvm::BugpointIsInterrupted = false;
 
-  BugDriver D(argv[0]);
+static void BugpointInterruptFunction() {
+  BugpointIsInterrupted = true;
+}
+
+int main(int argc, char **argv) {
+  cl::ParseCommandLineOptions(argc, argv,
+                              " LLVM automatic testcase reducer. See\nhttp://"
+                              "llvm.org/docs/CommandGuide/bugpoint.html"
+                              " for more information.\n");
+  sys::PrintStackTraceOnErrorSignal();
+  sys::SetInterruptFunction(BugpointInterruptFunction);
+  
+  BugDriver D(argv[0],AsChild);
   if (D.addSources(InputFilenames)) return 1;
   D.addPasses(PassList.begin(), PassList.end());
 
   // Bugpoint has the ability of generating a plethora of core files, so to
-  // avoid filling up the disk, set the max core file size to 0.
-  struct rlimit rlim;
-  rlim.rlim_cur = rlim.rlim_max = 0;
-  int res = setrlimit(RLIMIT_CORE, &rlim);
-  if (res < 0) {
-    // setrlimit() may have failed, but we're not going to let that stop us
-    perror("setrlimit: RLIMIT_CORE");
-  }
+  // avoid filling up the disk, we prevent it
+  sys::Process::PreventCoreFiles();
 
-  return D.run();
+  try {
+    return D.run();
+  } catch (ToolExecutionError &TEE) {
+    std::cerr << "Tool execution error: " << TEE.what() << '\n';
+  } catch (const std::string& msg) {
+    std::cerr << argv[0] << ": " << msg << "\n";
+  } catch (...) {
+    std::cerr << "Whoops, an exception leaked out of bugpoint.  "
+              << "This is a bug in bugpoint!\n";
+  }
+  return 1;
 }