Add a pointer to the owning LLVMContext to Module. This requires threading LLVMConte...

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

diff --git a/tools/bugpoint/bugpoint.cpp b/tools/bugpoint/bugpoint.cpp
index 3c89dce525a36ff6b0a74e55d7b39d1bd454ca9d..57007e035c47d481616cc44dd75065a976ebcbc7 100644 (file)
--- a/tools/bugpoint/bugpoint.cpp
+++ b/tools/bugpoint/bugpoint.cpp
@@ -1,10 +1,10 @@
 //===- 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 file 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
@@ -14,51 +14,93 @@
 //===----------------------------------------------------------------------===//
 
 #include "BugDriver.h"
+#include "ToolRunner.h"
+#include "llvm/LinkAllPasses.h"
+#include "llvm/LLVMContext.h"
 #include "llvm/Support/PassNameParser.h"
-#include "llvm/Support/ToolRunner.h"
-#include "Support/CommandLine.h"
-#include "Config/unistd.h"
-#include <sys/resource.h>
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PluginLoader.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/System/Process.h"
+#include "llvm/System/Signals.h"
+#include "llvm/LinkAllVMCore.h"
+#include <iostream>
 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::opt<bool> 
+FindBugs("find-bugs", cl::desc("Run many different optimization sequences "
+                               "on program to find bugs"), cl::init(false));
+
 static cl::list<std::string>
 InputFilenames(cl::Positional, cl::OneOrMore,
                cl::desc("<input llvm ll/bc files>"));
 
+static cl::opt<unsigned>
+TimeoutValue("timeout", cl::init(300), cl::value_desc("seconds"),
+             cl::desc("Number of seconds program is allowed to run before it "
+                      "is killed (default is 300s), 0 disables timeout"));
+
+static cl::opt<unsigned>
+MemoryLimit("mlimit", cl::init(100), cl::value_desc("MBytes"),
+             cl::desc("Maximum amount of memory to use. 0 disables check."));
+
 // The AnalysesList is automatically populated with registered Passes by the
 // PassNameParser.
 //
 static cl::list<const PassInfo*, bool, PassNameParser>
 PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
 
+/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
+bool llvm::BugpointIsInterrupted = false;
+
+static void BugpointInterruptFunction() {
+  BugpointIsInterrupted = true;
+}
+
 int main(int argc, char **argv) {
+  llvm::sys::PrintStackTraceOnErrorSignal();
+  llvm::PrettyStackTraceProgram X(argc, argv);
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
   cl::ParseCommandLineOptions(argc, argv,
-                              " LLVM automatic testcase reducer. See\nhttp://"
-                              "llvm.cs.uiuc.edu/docs/CommandGuide/bugpoint.html"
+                              "LLVM automatic testcase reducer. See\nhttp://"
+                              "llvm.org/cmds/bugpoint.html"
                               " for more information.\n");
+  sys::SetInterruptFunction(BugpointInterruptFunction);
 
-  BugDriver D(argv[0]);
+  LLVMContext Context;
+  BugDriver D(argv[0], AsChild, FindBugs, TimeoutValue, MemoryLimit, &Context);
   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();
 
   try {
     return D.run();
   } catch (ToolExecutionError &TEE) {
-    std::cerr << "Tool execution error: " << TEE.getMessage() << "\n";
-    return 1;
+    std::cerr << "Tool execution error: " << TEE.what() << '\n';
+  } catch (const std::string& msg) {
+    std::cerr << argv[0] << ": " << msg << "\n";
+  } catch (const std::bad_alloc &e) {
+    std::cerr << "Oh no, a bugpoint process ran out of memory!\n"
+                 "To increase the allocation limits for bugpoint child\n"
+                 "processes, use the -mlimit option.\n";
+  } catch (const std::exception &e) {
+    std::cerr << "Whoops, a std::exception leaked out of bugpoint: "
+              << e.what() << "\n"
+              << "This is a bug in bugpoint!\n";
   } catch (...) {
     std::cerr << "Whoops, an exception leaked out of bugpoint.  "
               << "This is a bug in bugpoint!\n";
-    return 1;
   }
+  return 1;
 }