From fbe4d6b1fa256825ded9d9ebf1b6aeca3d1ff270 Mon Sep 17 00:00:00 2001
From: Michael Gottesman <mgottesman@apple.com>
Date: Mon, 7 Jan 2013 00:04:52 +0000
Subject: [PATCH] [ObjCARC Debug Message] - Added debug message when we erase
 ARC calls with null since they are no-ops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171677 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/ObjCARC.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp
index 1ba5a503848..86b99c9eb15 100644
--- a/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2468,6 +2468,8 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
     if (isNullOrUndef(Arg)) {
       Changed = true;
       ++NumNoops;
+      DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: ARC calls with "
+            " null are no-ops. Erasing: " << *Inst << "\n");
       EraseInstruction(Inst);
       continue;
     }
-- 
2.34.1