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

llvm-svn: 188447
diff --git a/clang/test/CodeGenCXX/atomicinit.cpp b/clang/test/CodeGenCXX/atomicinit.cpp
index 38d012e..ee2e9e4 100644
--- a/clang/test/CodeGenCXX/atomicinit.cpp
+++ b/clang/test/CodeGenCXX/atomicinit.cpp
@@ -18,7 +18,7 @@
 
 _Atomic(B) b;
 
-// CHECK: define void @_Z11atomic_initR1Ai
+// CHECK-LABEL: define void @_Z11atomic_initR1Ai
 void atomic_init(A& a, int i) {
   // CHECK-NOT: atomic
   // CHECK: tail call void @_ZN1BC1Ei
@@ -26,7 +26,7 @@
   // CHECK-NEXT: ret void
 }
 
-// CHECK: define void @_Z16atomic_init_boolPU7_Atomicbb
+// CHECK-LABEL: define void @_Z16atomic_init_boolPU7_Atomicbb
 void atomic_init_bool(_Atomic(bool) *ab, bool b) {
   // CHECK-NOT: atomic
   // CHECK: {{zext i1.*to i8}}
@@ -40,7 +40,7 @@
   AtomicBoolMember(bool b);
 };
 
-// CHECK: define void @_ZN16AtomicBoolMemberC2Eb
+// CHECK-LABEL: define void @_ZN16AtomicBoolMemberC2Eb
 // CHECK: {{zext i1.*to i8}}
 // CHECK-NEXT: store i8
 // CHECK-NEXT: ret void