fix xcore-opts.c test

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190526 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/xcore-opts.c b/test/Driver/xcore-opts.c
index 809b1fd..11ee9e2 100644
--- a/test/Driver/xcore-opts.c
+++ b/test/Driver/xcore-opts.c
@@ -1,4 +1,4 @@
-// RUN: %clang -target xcore %s -### -o %t.o 2>&1 FileCheck %s
+// RUN: %clang -target xcore %s -### -o %t.o 2>&1 | FileCheck %s
 
 // CHECK: "-momit-leaf-frame-pointer"
 // CHECK-NOT: "-mdisable-fp-elim"