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/CodeGenCXX/expr.cpp b/clang/test/CodeGenCXX/expr.cpp
index 4dc97c4..6d641dc 100644
--- a/clang/test/CodeGenCXX/expr.cpp
+++ b/clang/test/CodeGenCXX/expr.cpp
@@ -1,4 +1,4 @@
-// RUN: clang-cc -emit-llvm -x c++ < %s
+// RUN: %clang_cc1 -emit-llvm -x c++ < %s
 
 void test0(int x) {
           if (x != 0) return;