--- old/src/share/vm/opto/arraycopynode.hpp	2017-05-16 14:14:41.496921919 +0200
+++ new/src/share/vm/opto/arraycopynode.hpp	2017-05-16 14:14:36.939901330 +0200
@@ -167,7 +167,8 @@
   bool has_negative_length_guard() const { return _has_negative_length_guard; }
 
   static bool may_modify(const TypeOopPtr *t_oop, MemBarNode* mb, PhaseTransform *phase, ArrayCopyNode*& ac);
-  bool modifies(intptr_t offset_lo, intptr_t offset_hi, PhaseTransform* phase, bool must_modify);
+  bool modifies(intptr_t offset_lo, intptr_t offset_hi, PhaseTransform* phase, bool must_modify) const;
+  bool can_replace_dest_load_with_src_load(intptr_t offset_lo, intptr_t offset_hi, PhaseTransform* phase) const;
 
 #ifndef PRODUCT
   virtual void dump_spec(outputStream *st) const;