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/constant-strings.m b/test/CodeGenObjC/constant-strings.m
index 08d30ba..2276949 100644
--- a/test/CodeGenObjC/constant-strings.m
+++ b/test/CodeGenObjC/constant-strings.m
@@ -1,6 +1,6 @@
-// RUN: clang -cc1 -emit-llvm -o %t %s
-// RUN: clang -cc1 -fgnu-runtime -emit-llvm -o %t %s && grep NXConstantString %t | count 1
-// RUN: clang -cc1 -fgnu-runtime -fconstant-string-class NSConstantString -emit-llvm -o %t %s && grep NSConstantString %t | count 1
+// RUN: %clang_cc1 -emit-llvm -o %t %s
+// RUN: %clang_cc1 -fgnu-runtime -emit-llvm -o %t %s && grep NXConstantString %t | count 1
+// RUN: %clang_cc1 -fgnu-runtime -fconstant-string-class NSConstantString -emit-llvm -o %t %s && grep NSConstantString %t | count 1
 
 id a = @"Hello World!";