diff -r 9111de8b09a1 -r 40474b7105f4 src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
--- a/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Wed Nov 14 23:12:19 2018 -0800
+++ b/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Thu Nov 15 10:59:56 2018 +0100
@@ -55,12 +55,15 @@
 const DecoratorSet C2_ARRAY_COPY             = DECORATOR_LAST << 10;
 
 class Compile;
+class ConnectionGraph;
 class GraphKit;
 class IdealKit;
 class Node;
+class PhaseGVN;
+class PhaseMacroExpand;
 class Type;
 class TypePtr;
-class PhaseMacroExpand;
+class Unique_Node_List;
 
 // This class wraps a node and a type.
 class C2AccessValue: public StackObj {
@@ -291,6 +294,10 @@
 
   virtual bool final_graph_reshaping(Compile* compile, Node* n, uint opcode) const { return false; }
 
+  virtual bool escape_add_to_con_graph(ConnectionGraph* conn_graph, PhaseGVN* gvn, Unique_Node_List* delayed_worklist, Node* n, uint opcode) const { return false; }
+  virtual bool escape_add_final_edges(ConnectionGraph* conn_graph, PhaseGVN* gvn, Node* n, uint opcode) const { return false; }
+  virtual bool escape_has_out_with_unsafe_object(Node* n) const { return false; }
+  virtual bool escape_is_barrier_node(Node* n) const { return false; }
 };
 
 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP