Convert a few tests to FileCheck for PR5307.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85170 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/macro_disable3.c b/test/Preprocessor/macro_disable3.c
index 011de3b..2983f2d 100644
--- a/test/Preprocessor/macro_disable3.c
+++ b/test/Preprocessor/macro_disable3.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc %s -E | grep -F 'f(2 * (f(2 * (z[0]))));'
+// RUN: clang-cc %s -E | FileCheck %s
 // Check for C99 6.10.3.4p2.
 
 #define f(a) f(x * (a)) 
@@ -6,3 +6,5 @@
 #define z z[0] 
 f(f(z)); 
 
+// CHECK: f(2 * (f(2 * (z[0]))));
+