diff a/src/hotspot/cpu/ppc/gc/shared/barrierSetAssembler_ppc.hpp b/src/hotspot/cpu/ppc/gc/shared/barrierSetAssembler_ppc.hpp
--- a/src/hotspot/cpu/ppc/gc/shared/barrierSetAssembler_ppc.hpp
+++ b/src/hotspot/cpu/ppc/gc/shared/barrierSetAssembler_ppc.hpp
@@ -58,10 +58,13 @@
   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                        Register base, RegisterOrConstant ind_or_offs, Register dst,
                        Register tmp1, Register tmp2,
                        MacroAssembler::PreservationLevel preservation_level, Label *L_handle_null = nullptr);
 
+  virtual void flat_field_copy(MacroAssembler* masm, DecoratorSet decorators,
+                               Register src, Register dst, Register inline_layout_info);
+
   virtual void resolve_jobject(MacroAssembler* masm, Register value,
                                Register tmp1, Register tmp2,
                                MacroAssembler::PreservationLevel preservation_level);
   virtual void resolve_global_jobject(MacroAssembler* masm, Register value,
                                       Register tmp1, Register tmp2,