Fix FileCheck --check-prefix lines.

Various tests had sprung up over the years which had --check-prefix=ABC on the
RUN line, but "CHECK-ABC:" later on. This happened to work before, but was
strictly incorrect. FileCheck is getting stricter soon though.

Patch by Ron Ofir.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188174 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/objc_literals.mm b/test/PCH/objc_literals.mm
index ef95294..59f3381 100644
--- a/test/PCH/objc_literals.mm
+++ b/test/PCH/objc_literals.mm
@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -emit-pch -x objective-c++ -std=c++0x -o %t %s
 // RUN: %clang_cc1 -include-pch %t -x objective-c++ -std=c++0x  -verify %s
-// RUN: %clang_cc1 -include-pch %t -x objective-c++ -std=c++0x  -ast-print %s | FileCheck -check-prefix=PRINT %s
-// RUN: %clang_cc1 -include-pch %t -x objective-c++ -std=c++0x  -emit-llvm -o - %s | FileCheck -check-prefix=IR %s
+// RUN: %clang_cc1 -include-pch %t -x objective-c++ -std=c++0x  -ast-print %s | FileCheck -check-prefix=CHECK-PRINT %s
+// RUN: %clang_cc1 -include-pch %t -x objective-c++ -std=c++0x  -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-IR %s
 
 // expected-no-diagnostics