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

llvm-svn: 188447
diff --git a/clang/test/CodeGenCXX/mangle-unnamed.cpp b/clang/test/CodeGenCXX/mangle-unnamed.cpp
index 53f381c..a62bdd5 100644
--- a/clang/test/CodeGenCXX/mangle-unnamed.cpp
+++ b/clang/test/CodeGenCXX/mangle-unnamed.cpp
@@ -80,7 +80,7 @@
 template <class T> void make_test8(T value) { Test8<T> t(value); }
 void test8() { make_test8(T8); }
 
-// CHECK: define internal void @"_ZNV3$_35test9Ev"(
+// CHECK-LABEL: define internal void @"_ZNV3$_35test9Ev"(
 typedef volatile struct {
   void test9() volatile {}
 } Test9;
@@ -89,4 +89,4 @@
   a.test9();
 }
 
-// CHECK: define internal void @"_ZN5Test8I3$_2EC1ES0_"(
+// CHECK-LABEL: define internal void @"_ZN5Test8I3$_2EC1ES0_"(