CodeGeneratorBug.cpp:

* Temporarily externing InputArgv to print it out for the benefit of LLI command
  needed to reproduce the result.
* Print out the list of functions currently being tested
* ListReducer now returns a bool if there was a failure, so test for it

ListReducer.h:
* Handle the case where there is no problem by returning true if failure is
  found. Also correctly handles the case when there is only 1 pass/function.

Miscompilation.cpp:
* ListReducer now returns a bool if there was a failure, so test for it


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7434 91177308-0d34-0410-b5e6-96231b3b80d8

tools/bugpoint/Miscompilation.cpp

@@ -268,12 +268,8 @@ bool BugDriver::debugMiscompilation() {
     return false;  // Problem found
   }
 
-  // Figure out which transformations miscompile the input program.
-  unsigned OldSize = PassesToRun.size();
-  ReduceMiscompilingPasses(*this).reduceList(PassesToRun);
-
   // Make sure something was miscompiled...
-  if (PassesToRun.size() == OldSize) {
+  if (!ReduceMiscompilingPasses(*this).reduceList(PassesToRun)) {
     std::cerr << "*** Optimized program matches reference output!  No problem "
 	      << "detected...\nbugpoint can't help you with your problem!\n";
     return false;