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

llvm-svn: 188447
diff --git a/clang/test/CodeGenCXX/init-invariant.cpp b/clang/test/CodeGenCXX/init-invariant.cpp
index 9eb1989..2f56e82 100644
--- a/clang/test/CodeGenCXX/init-invariant.cpp
+++ b/clang/test/CodeGenCXX/init-invariant.cpp
@@ -54,7 +54,7 @@
 // CHECK: store {{.*}}, i32* @d
 // CHECK: call {{.*}}@llvm.invariant.start(i64 4, i8* bitcast ({{.*}} @d to i8*))
 
-// CHECK: define void @_Z1ev(
+// CHECK-LABEL: define void @_Z1ev(
 // CHECK: call void @_ZN1AC1Ev(%struct.A* @_ZZ1evE1a)
 // CHECK: call {{.*}}@llvm.invariant.start(i64 4, i8* bitcast ({{.*}} @_ZZ1evE1a to i8*))
 // CHECK-NOT: llvm.invariant.end