--- /dev/null	2017-03-07 11:44:12.271151064 +0100
+++ new/src/share/vm/gc/shared/c2ModRefBSCodeGen.hpp	2017-04-25 16:46:31.899171121 +0200
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_SHARED_C2MODREFBSCODEGEN_HPP
+#define SHARE_VM_GC_SHARED_C2MODREFBSCODEGEN_HPP
+
+#include "gc/shared/c2BarrierSetCodeGen.hpp"
+
+class TypeOopPtr;
+
+class C2ModRefBSCodeGen: public C2BarrierSetCodeGen {
+protected:
+  virtual void pre_barrier(GraphKit* kit,
+                           bool do_load,
+                           Node* ctl,
+                           Node* obj,
+                           Node* adr,
+                           uint adr_idx,
+                           Node* val,
+                           const TypeOopPtr* val_type,
+                           Node* pre_val,
+                           BasicType bt) {}
+
+  virtual void post_barrier(GraphKit* kit,
+                            Node* ctl,
+                            Node* store,
+                            Node* obj,
+                            Node* adr,
+                            uint adr_idx,
+                            Node* val,
+                            BasicType bt,
+                            bool use_precise) {}
+
+public:
+  virtual Node* store_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, Node* val, const Type* val_type, BasicType bt, C2DecoratorSet decorators);
+
+  virtual Node* cas_val_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, Node* mem, Node*& load_store, BasicType bt, C2DecoratorSet decorators);
+  virtual Node* cas_bool_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, Node* mem, BasicType bt, C2DecoratorSet decorators);
+  virtual Node* swap_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* new_val, const Type* value_type, Node* mem, Node*& load_store, BasicType bt, C2DecoratorSet decorators);
+};
+
+#endif // SHARE_VM_GC_SHARED_C2MODREFBSCODEGEN_HPP