Teach bugpoint to kill optimization passes that run over the timeout limit,
which allows it to debug optimizer infinite loops.  This patch is contributed
by Nick Lewycky, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28763 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/BugDriver.cpp b/tools/bugpoint/BugDriver.cpp
index 8251ee4..f8beb2a 100644
--- a/tools/bugpoint/BugDriver.cpp
+++ b/tools/bugpoint/BugDriver.cpp
@@ -62,9 +62,10 @@
   return Result;
 }
 
-BugDriver::BugDriver(const char *toolname, bool as_child)
+BugDriver::BugDriver(const char *toolname, bool as_child, unsigned timeout)
   : ToolName(toolname), ReferenceOutputFile(OutputFile),
-    Program(0), Interpreter(0), cbe(0), gcc(0), run_as_child(as_child) {}
+    Program(0), Interpreter(0), cbe(0), gcc(0), run_as_child(as_child),
+    Timeout(timeout) {}
 
 
 /// ParseInputFile - Given a bytecode or assembly input filename, parse and