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/PCH/exprs.c b/test/PCH/exprs.c
index 6cd1ee7..2b588a2 100644
--- a/test/PCH/exprs.c
+++ b/test/PCH/exprs.c
@@ -1,9 +1,9 @@
 // Test this without pch.
-// RUN: clang-cc -fblocks -include %S/exprs.h -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fblocks -include %S/exprs.h -fsyntax-only -verify %s
 
 // Test with pch.
-// RUN: clang-cc -emit-pch -fblocks -o %t %S/exprs.h
-// RUN: clang-cc -fblocks -include-pch %t -fsyntax-only -verify %s 
+// RUN: %clang_cc1 -emit-pch -fblocks -o %t %S/exprs.h
+// RUN: %clang_cc1 -fblocks -include-pch %t -fsyntax-only -verify %s 
 
 int integer;
 long long_integer;