--- old/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	2018-10-18 09:23:09.626601632 +0200
+++ new/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	2018-10-18 09:23:01.268628475 +0200
@@ -213,8 +213,8 @@
   virtual void register_potential_barrier_node(Node* node) const { }
   virtual void unregister_potential_barrier_node(Node* node) const { }
   virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const { }
-  virtual void enqueue_useful_gc_barrier(Unique_Node_List &worklist, Node* node) const {}
-  virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful) const {}
+  virtual void enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const {}
+  virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful, Compile* C) const {}
   virtual void add_users_to_worklist(Unique_Node_List* worklist) const {}
 
   // Allow barrier sets to have shared state that is preserved across a compilation unit.