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

llvm-svn: 188447
diff --git a/clang/test/CodeGen/annotations-var.c b/clang/test/CodeGen/annotations-var.c
index b8ada9f..da9e0b6 100644
--- a/clang/test/CodeGen/annotations-var.c
+++ b/clang/test/CodeGen/annotations-var.c
@@ -31,7 +31,7 @@
 
 void local(void) {
     int localvar __attribute__((annotate("localvar_ann_0"))) __attribute__((annotate("localvar_ann_1"))) = 3;
-// LOCAL: define void @local()
+// LOCAL-LABEL: define void @local()
 // LOCAL:      [[LOCALVAR:%.*]] = alloca i32,
 // LOCAL-NEXT: [[T0:%.*]] = bitcast i32* [[LOCALVAR]] to i8*
 // LOCAL-NEXT: call void @llvm.var.annotation(i8* [[T0]], i8* getelementptr inbounds ([15 x i8]* @{{.*}}), i8* getelementptr inbounds ({{.*}}), i32 33)
@@ -41,7 +41,7 @@
 
 void undef(void) {
     int undefvar __attribute__((annotate("undefvar_ann_0")));
-// UNDEF: define void @undef()
+// UNDEF-LABEL: define void @undef()
 // UNDEF:      [[UNDEFVAR:%.*]] = alloca i32,
 // UNDEF-NEXT: [[T0:%.*]] = bitcast i32* [[UNDEFVAR]] to i8*
 // UNDEF-NEXT: call void @llvm.var.annotation(i8* [[T0]], i8* getelementptr inbounds ([15 x i8]* @{{.*}}), i8* getelementptr inbounds ({{.*}}), i32 43)