diff -r 991fe09c698c -r e7d8ea5bfc8f src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
--- a/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Tue Nov 20 21:12:46 2018 +0100
+++ b/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Tue Nov 20 22:37:34 2018 +0100
@@ -28,6 +28,7 @@
 #include "memory/allocation.hpp"
 #include "oops/accessDecorators.hpp"
 #include "opto/loopnode.hpp"
+#include "opto/matcher.hpp"
 #include "opto/memnode.hpp"
 #include "utilities/globalDefinitions.hpp"
 
@@ -298,6 +299,10 @@
   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; }
+
+  virtual bool matcher_find_shared_visit(Matcher* matcher, Matcher::MStack& mstack, Node* n, uint opcode, bool& mem_op, int& mem_addr_idx) const { return false; };
+  virtual bool matcher_find_shared_post_visit(Matcher* matcher, Node* n, uint opcode) const { return false; };
+  virtual bool matcher_is_store_load_barrier(Node* x, uint xop) const { return false; }
 };
 
 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP