[ObjCARC Debug Message] - Added debug message when we add a nounwind keyword to a function which can not throw.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171676 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp
index c840e6e4c8..1ba5a50384 100644
--- a/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2452,6 +2452,8 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
     // Set nounwind as needed.
     if (IsNoThrow(Class)) {
       Changed = true;
+      DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: Found no throw"
+            " class. Setting nounwind on: " << *Inst << "\n");
       cast<CallInst>(Inst)->setDoesNotThrow();
     }