[ObjCARC Debug Message] - Added debug message when we add a tail keyword to a function which can never be passed stack args.
llvm-svn: 171675
diff --git a/llvm/lib/Transforms/Scalar/ObjCARC.cpp b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
index d4e151c..c840e6e 100644
--- a/llvm/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2443,6 +2443,9 @@
// a tail keyword.
if (IsAlwaysTail(Class)) {
Changed = true;
+ DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: Adding tail keyword"
+ " to function since it can never be passed stack args: " << *Inst <<
+ "\n");
cast<CallInst>(Inst)->setTailCall();
}