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/Preprocessor/optimize.c b/test/Preprocessor/optimize.c
index 973d27f..c820ded 100644
--- a/test/Preprocessor/optimize.c
+++ b/test/Preprocessor/optimize.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc -Eonly %s -DOPT_O2 -O2 -verify
+// RUN: %clang_cc1 -Eonly %s -DOPT_O2 -O2 -verify
 #ifdef OPT_O2
   #ifndef __OPTIMIZE__
     #error "__OPTIMIZE__ not defined"
@@ -8,7 +8,7 @@
   #endif
 #endif
 
-// RUN: clang-cc -Eonly %s -DOPT_O0 -O0 -verify
+// RUN: %clang_cc1 -Eonly %s -DOPT_O0 -O0 -verify
 #ifdef OPT_O0
   #ifdef __OPTIMIZE__
     #error "__OPTIMIZE__ defined"
@@ -18,7 +18,7 @@
   #endif
 #endif
 
-// RUN: clang-cc -Eonly %s -DOPT_OS -Os -verify
+// RUN: %clang_cc1 -Eonly %s -DOPT_OS -Os -verify
 #ifdef OPT_OS
   #ifndef __OPTIMIZE__
     #error "__OPTIMIZE__ not defined"