--- old/src/share/vm/opto/memnode.cpp	2017-05-16 14:12:40.203373892 +0200
+++ new/src/share/vm/opto/memnode.cpp	2017-05-16 14:12:36.135355512 +0200
@@ -891,10 +891,11 @@
         ld->set_req(0, ld_alloc->in(0));
       }
     } else {
+      Node* src = ac->in(ArrayCopyNode::Src);
       Node* addp = in(MemNode::Address)->clone();
       assert(addp->in(AddPNode::Base) == addp->in(AddPNode::Address), "should be");
-      addp->set_req(AddPNode::Base, ac->in(ArrayCopyNode::Src));
-      addp->set_req(AddPNode::Address, ac->in(ArrayCopyNode::Src));
+      addp->set_req(AddPNode::Base, src);
+      addp->set_req(AddPNode::Address, src);
 
       const TypeAryPtr* ary_t = phase->type(in(MemNode::Address))->isa_aryptr();
       BasicType ary_elem  = ary_t->klass()->as_array_klass()->element_type()->basic_type();
@@ -911,6 +912,12 @@
       addp->set_req(AddPNode::Offset, offset);
       ld->set_req(MemNode::Address, phase->transform(addp));
 
+      const TypeX *ld_offs_t = phase->type(offset)->isa_intptr_t();
+
+      if (!ac->as_ArrayCopy()->can_replace_dest_load_with_src_load(ld_offs_t->_lo, ld_offs_t->_hi, phase)) {
+        return NULL;
+      }
+
       if (in(0) != NULL) {
         assert(ac->in(0) != NULL, "alloc must have control");
         ld->set_req(0, ac->in(0));