--- a/hotspot/src/share/vm/opto/superword.cpp	Wed Feb 03 12:36:18 2016 +0100
+++ b/hotspot/src/share/vm/opto/superword.cpp	Fri Feb 12 16:12:15 2016 -0800
@@ -2253,6 +2253,9 @@
           C->set_major_progress();
         }
         cl->mark_do_unroll_only();
+        if (do_reserve_copy()) {
+          cl->mark_loop_vectorized();
+        }
       }
     }
   }