189 virtual Node* atomic_add_at(C2AtomicAccess& access, Node* new_val, const Type* value_type) const;
190
191 virtual void clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array) const;
192
193 virtual Node* ideal_node(PhaseGVN* phase, Node* n, bool can_reshape) const { return NULL; }
194 virtual Node* identity_node(PhaseGVN* phase, Node* n) const { return n; }
195
196 // These are general helper methods used by C2
197 virtual bool array_copy_requires_gc_barriers(BasicType type) const { return false; }
198 virtual void clone_at_expansion(PhaseMacroExpand* phase, ArrayCopyNode* ac) const;
199
200 // Support for GC barriers emitted during parsing
201 virtual bool has_load_barriers() const { return false; }
202 virtual bool is_gc_barrier_node(Node* node) const { return false; }
203 virtual Node* step_over_gc_barrier(Node* c) const { return c; }
204
205 // Support for macro expanded GC barriers
206 virtual void register_potential_barrier_node(Node* node) const { }
207 virtual void unregister_potential_barrier_node(Node* node) const { }
208 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const { }
209 virtual void enqueue_useful_gc_barrier(Unique_Node_List &worklist, Node* node) const {}
210 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful) const {}
211 virtual void add_users_to_worklist(Unique_Node_List* worklist) const {}
212
213 // Allow barrier sets to have shared state that is preserved across a compilation unit.
214 // This could for example comprise macro nodes to be expanded during macro expansion.
215 virtual void* create_barrier_state(Arena* comp_arena) const { return NULL; }
216 // If the BarrierSetC2 state has kept macro nodes in its compilation unit state to be
217 // expanded later, then now is the time to do so.
218 virtual bool expand_macro_nodes(PhaseMacroExpand* macro) const { return false; }
219 virtual void verify_gc_barriers(bool post_parse) const {}
220 };
221
222 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP
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189 virtual Node* atomic_add_at(C2AtomicAccess& access, Node* new_val, const Type* value_type) const;
190
191 virtual void clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array) const;
192
193 virtual Node* ideal_node(PhaseGVN* phase, Node* n, bool can_reshape) const { return NULL; }
194 virtual Node* identity_node(PhaseGVN* phase, Node* n) const { return n; }
195
196 // These are general helper methods used by C2
197 virtual bool array_copy_requires_gc_barriers(BasicType type) const { return false; }
198 virtual void clone_at_expansion(PhaseMacroExpand* phase, ArrayCopyNode* ac) const;
199
200 // Support for GC barriers emitted during parsing
201 virtual bool has_load_barriers() const { return false; }
202 virtual bool is_gc_barrier_node(Node* node) const { return false; }
203 virtual Node* step_over_gc_barrier(Node* c) const { return c; }
204
205 // Support for macro expanded GC barriers
206 virtual void register_potential_barrier_node(Node* node) const { }
207 virtual void unregister_potential_barrier_node(Node* node) const { }
208 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const { }
209 virtual void enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const {}
210 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful) const {}
211 virtual void add_users_to_worklist(Unique_Node_List* worklist) const {}
212
213 // Allow barrier sets to have shared state that is preserved across a compilation unit.
214 // This could for example comprise macro nodes to be expanded during macro expansion.
215 virtual void* create_barrier_state(Arena* comp_arena) const { return NULL; }
216 // If the BarrierSetC2 state has kept macro nodes in its compilation unit state to be
217 // expanded later, then now is the time to do so.
218 virtual bool expand_macro_nodes(PhaseMacroExpand* macro) const { return false; }
219 virtual void verify_gc_barriers(bool post_parse) const {}
220 };
221
222 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP
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