Make bugpoint emit a bugpoint-reduced-blocks.bc, because bugpoint itself

can crash during instruction simplification (for example if it creates a
broken module).

llvm-svn: 72362

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/tools/bugpoint/CrashDebugger.cpp b/llvm/tools/bugpoint/CrashDebugger.cpp
index 2e43f88c711..f46fed78608 100644
--- a/llvm/tools/bugpoint/CrashDebugger.cpp
+++ b/llvm/tools/bugpoint/CrashDebugger.cpp
@@ -426,7 +426,10 @@ static bool DebugACrash(BugDriver &BD,  bool (*TestFn)(BugDriver &, Module *)) {
            E = BD.getProgram()->end(); I != E; ++I)
       for (Function::const_iterator FI = I->begin(), E = I->end(); FI !=E; ++FI)
         Blocks.push_back(FI);
+    unsigned OldSize = Blocks.size();
     ReduceCrashingBlocks(BD, TestFn).reduceList(Blocks);
+    if (Blocks.size() < OldSize)
+      BD.EmitProgressBitcode("reduced-blocks");
   }
 
   // FIXME: This should use the list reducer to converge faster by deleting