commit f64ff8ed3a5b5b3c5b2fd2f16dc32b4aadc06004
author Dan Gohman <gohman@apple.com> Mon Jul 23 19:27:31 2012 +0000
committer Dan Gohman <gohman@apple.com> Mon Jul 23 19:27:31 2012 +0000
tree 3578945d4cac15cf9d64e7395c74f2351f8b2c37
parent adec58c0915baabb20000d03af7872ad7dc898ea

An objc_retain can serve as a may-use for a different pointer.
rdar://11931823.

llvm-svn: 160637

llvm/lib/Transforms/Scalar/ObjCARC.cpp

diff --git a/llvm/lib/Transforms/Scalar/ObjCARC.cpp b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
index 64f71d3..3222f20 100644
--- a/llvm/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/llvm/lib/Transforms/Scalar/ObjCARC.cpp
@@ -2829,7 +2829,10 @@
     }
 
     S.IncrementNestCount();
-    return NestingDetected;
+
+    // A retain can be a potential use; procede to the generic checking
+    // code below.
+    break;
   }
   case IC_Release: {
     Arg = GetObjCArg(Inst);