--- old/src/hotspot/share/opto/phaseX.hpp	2019-03-11 14:26:56.334354461 +0100
+++ new/src/hotspot/share/opto/phaseX.hpp	2019-03-11 14:26:56.126354464 +0100
@@ -478,7 +478,7 @@
 
   // Idealize new Node 'n' with respect to its inputs and its value
   virtual Node *transform( Node *a_node );
-  virtual void record_for_igvn(Node *n) { }
+  virtual void record_for_igvn(Node *n) { _worklist.push(n); }
 
   virtual PhaseIterGVN *is_IterGVN() { return this; }
 
@@ -530,6 +530,8 @@
     subsume_node(old, nn);
   }
 
+  void replace_in_uses(Node* n, Node* m);
+
   // Delayed node rehash: remove a node from the hash table and rehash it during
   // next optimizing pass
   void rehash_node_delayed(Node* n) {