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).

llvm-svn: 91446
diff --git a/clang/test/Sema/expr-comma-c89.c b/clang/test/Sema/expr-comma-c89.c
index ffe8b69..d0883ba 100644
--- a/clang/test/Sema/expr-comma-c89.c
+++ b/clang/test/Sema/expr-comma-c89.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc %s -fsyntax-only -verify -std=c99
+// RUN: %clang_cc1 %s -fsyntax-only -verify -std=c99
 // rdar://6095180
 
 struct s { char c[17]; };