[ObjCARC Debug Message] - Added debug message when we zap a matching retain/autorelease pair in ObjCARCOpt::OptimizeReturns.

llvm-svn: 171678

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Scalar/ObjCARC.cpp b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
index 86b99c9eb15..1c1273ca379 100644
--- a/llvm/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
@@ -3753,6 +3753,9 @@ void ObjCARCOpt::OptimizeReturns(Function &F) {
           // If so, we can zap the retain and autorelease.
           Changed = true;
           ++NumRets;
+          DEBUG(dbgs() << "ObjCARCOpt::OptimizeReturns: Erasing: " << *Retain
+                       << "\n                             Erasing: "
+                       << *Autorelease << "\n");
           EraseInstruction(Retain);
           EraseInstruction(Autorelease);
         }