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/Coverage/codegen-gnu.m b/test/Coverage/codegen-gnu.m
index 1948092..6e7790d 100644
--- a/test/Coverage/codegen-gnu.m
+++ b/test/Coverage/codegen-gnu.m
@@ -1,3 +1,3 @@
-// RUN: clang -cc1 -triple i386-unknown-unknown -fgnu-runtime -emit-llvm -o %t %s
+// RUN: %clang_cc1 -triple i386-unknown-unknown -fgnu-runtime -emit-llvm -o %t %s
 
 #include "objc-language-features.inc"