diff -r d20828de9e39 -r 73dd19b96b5d hotspot/src/share/vm/opto/parse2.cpp
--- a/hotspot/src/share/vm/opto/parse2.cpp	Thu Jun 15 09:52:44 2017 +0200
+++ b/hotspot/src/share/vm/opto/parse2.cpp	Fri Jun 09 10:51:52 2017 +0200
@@ -2282,6 +2282,11 @@
       b = null_check_oop(b, &null_ctl, true, true, true);
       assert(null_ctl->is_top(), "no null control here");
       dec_sp(1);
+    } else if (_gvn.type(b)->speculative_always_null() &&
+               !too_many_traps(Deoptimization::Reason_speculate_null_assert)) {
+      inc_sp(1);
+      b = null_assert(b);
+      dec_sp(1);
     }
     c = _gvn.transform( new CmpPNode(b, a) );
     do_ifnull(btest, c);