Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.
 - This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenObjC/overloadable.m b/test/CodeGenObjC/overloadable.m
index abf1e27..4fd1429 100644
--- a/test/CodeGenObjC/overloadable.m
+++ b/test/CodeGenObjC/overloadable.m
@@ -1,5 +1,5 @@
 // rdar://6657613
-// RUN: clang -cc1 -emit-llvm %s -o %t
+// RUN: %clang_cc1 -emit-llvm %s -o %t
 
 @class C;