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.

llvm-svn: 188174
diff --git a/clang/test/CodeCompletion/documentation.cpp b/clang/test/CodeCompletion/documentation.cpp
index c049ae3..d7dec9a 100644
--- a/clang/test/CodeCompletion/documentation.cpp
+++ b/clang/test/CodeCompletion/documentation.cpp
@@ -23,11 +23,11 @@
   t2.
 }
 
-// RUN: %clang_cc1 -fsyntax-only -code-completion-brief-comments -code-completion-at=%s:21:1 %s -o - | FileCheck -check-prefix=CC1 %s
+// RUN: %clang_cc1 -fsyntax-only -code-completion-brief-comments -code-completion-at=%s:21:1 %s -o - | FileCheck -check-prefix=CHECK-CC1 %s
 // CHECK-CC1: COMPLETION: T1 : [#void#]T1(<#float x#>, <#float y#>) : Aaa.
 // CHECK-CC1: COMPLETION: T2 : T2 : Bbb.
 // CHECK-CC1: COMPLETION: T5 : T5:: : Eee.
 
-// RUN: %clang_cc1 -fsyntax-only -code-completion-brief-comments -code-completion-at=%s:23:6 %s -o - | FileCheck -check-prefix=CC2 %s
+// RUN: %clang_cc1 -fsyntax-only -code-completion-brief-comments -code-completion-at=%s:23:6 %s -o - | FileCheck -check-prefix=CHECK-CC2 %s
 // CHECK-CC2: COMPLETION: T3 : [#void#]T3() : Ccc.
 // CHECK-CC2: COMPLETION: T4 : [#int#]T4 : Ddd.