diff -r 4a575a49e938 -r 09d0d56ca735 src/share/vm/opto/loopTransform.cpp
--- a/src/share/vm/opto/loopTransform.cpp	Thu Jun 01 20:42:49 2017 -0400
+++ b/src/share/vm/opto/loopTransform.cpp	Thu Jun 01 23:19:47 2017 -0700
@@ -2714,6 +2714,11 @@
     return false;
   }
 
+  Node* exit = head->loopexit()->proj_out(0);
+  if (exit == NULL) {
+    return false;
+  }
+
 #ifndef PRODUCT
   if (TraceLoopOpts) {
     tty->print("ArrayFill    ");
@@ -2831,7 +2836,6 @@
 */
 
   // Redirect the old control and memory edges that are outside the loop.
-  Node* exit = head->loopexit()->proj_out(0);
   // Sometimes the memory phi of the head is used as the outgoing
   // state of the loop.  It's safe in this case to replace it with the
   // result_mem.