Make tests use the new clang -cc1 flag.

llvm-svn: 91303
diff --git a/clang/test/CodeGen/function-decay.m b/clang/test/CodeGen/function-decay.m
index 5652fdb..4b8e360 100644
--- a/clang/test/CodeGen/function-decay.m
+++ b/clang/test/CodeGen/function-decay.m
@@ -1,4 +1,4 @@
-// RUN: clang-cc %s -emit-llvm -o -
+// RUN: clang -cc1 %s -emit-llvm -o -
 
 @interface I0 @end
 @implementation I0