CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail.

llvm-svn: 188447
diff --git a/clang/test/CodeGenCXX/function-template-explicit-specialization.cpp b/clang/test/CodeGenCXX/function-template-explicit-specialization.cpp
index 21f0127..5d26dcd 100644
--- a/clang/test/CodeGenCXX/function-template-explicit-specialization.cpp
+++ b/clang/test/CodeGenCXX/function-template-explicit-specialization.cpp
@@ -3,11 +3,11 @@
 template<typename T> void a(T);
 template<> void a(int) {}
 
-// CHECK: define void @_Z1aIiEvT_
+// CHECK-LABEL: define void @_Z1aIiEvT_
 
 namespace X {
 template<typename T> void b(T);
 template<> void b(int) {}
 }
 
-// CHECK: define void @_ZN1X1bIiEEvT_
+// CHECK-LABEL: define void @_ZN1X1bIiEEvT_