Added debug message to ObjCARC when we transform objc_retainAutorelasedReturnValue => objc_retain since the operand to said function is not a return value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171629 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp
index de0971394b..2a8a50e451 100644
--- a/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2261,7 +2261,18 @@ ObjCARCOpt::OptimizeRetainRVCall(Function &F, Instruction *RetainRV) {
   // Turn it to a plain objc_retain.
   Changed = true;
   ++NumPeeps;
+  
+  DEBUG(dbgs() << "ObjCARCOpt::OptimizeRetainRVCall: Transforming "
+                  "objc_retainAutoreleasedReturnValue => "
+                  "objc_retain since the operand is not a return value.\n"
+                  "                                  Old: "
+               << *RetainRV << "\n");
+  
   cast<CallInst>(RetainRV)->setCalledFunction(getRetainCallee(F.getParent()));
+
+  DEBUG(dbgs() << "                                  New: "
+               << *RetainRV << "\n");
+
   return false;
 }