use cheaper/simpler getselector call for @selector exprs.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52759 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjC.cpp b/lib/CodeGen/CGObjC.cpp
index 1beaf10..e9d2064 100644
--- a/lib/CodeGen/CGObjC.cpp
+++ b/lib/CodeGen/CGObjC.cpp
@@ -33,8 +33,7 @@
   // Note that this implementation allows for non-constant strings to be passed
   // as arguments to @selector().  Currently, the only thing preventing this
   // behaviour is the type checking in the front end.
-  return CGM.getObjCRuntime()->GetSelector(Builder,
-      CGM.GetAddrOfConstantString(E->getSelector().getName()), 0);
+  return CGM.getObjCRuntime()->GetSelector(Builder, E->getSelector());
 }