263 virtual void register_potential_barrier_node(Node* node) const { }
264 virtual void unregister_potential_barrier_node(Node* node) const { }
265 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const { }
266 virtual void enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const {}
267 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful, Compile* C) const {}
268 virtual void add_users_to_worklist(Unique_Node_List* worklist) const {}
269
270 // Allow barrier sets to have shared state that is preserved across a compilation unit.
271 // This could for example comprise macro nodes to be expanded during macro expansion.
272 virtual void* create_barrier_state(Arena* comp_arena) const { return NULL; }
273 // If the BarrierSetC2 state has kept macro nodes in its compilation unit state to be
274 // expanded later, then now is the time to do so.
275 virtual bool expand_macro_nodes(PhaseMacroExpand* macro) const { return false; }
276
277 enum CompilePhase {
278 BeforeOptimize, /* post_parse = true */
279 BeforeExpand, /* post_parse = false */
280 BeforeCodeGen
281 };
282 virtual void verify_gc_barriers(Compile* compile, CompilePhase phase) const {}
283 };
284
285 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP
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263 virtual void register_potential_barrier_node(Node* node) const { }
264 virtual void unregister_potential_barrier_node(Node* node) const { }
265 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const { }
266 virtual void enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const {}
267 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful, Compile* C) const {}
268 virtual void add_users_to_worklist(Unique_Node_List* worklist) const {}
269
270 // Allow barrier sets to have shared state that is preserved across a compilation unit.
271 // This could for example comprise macro nodes to be expanded during macro expansion.
272 virtual void* create_barrier_state(Arena* comp_arena) const { return NULL; }
273 // If the BarrierSetC2 state has kept macro nodes in its compilation unit state to be
274 // expanded later, then now is the time to do so.
275 virtual bool expand_macro_nodes(PhaseMacroExpand* macro) const { return false; }
276
277 enum CompilePhase {
278 BeforeOptimize, /* post_parse = true */
279 BeforeExpand, /* post_parse = false */
280 BeforeCodeGen
281 };
282 virtual void verify_gc_barriers(Compile* compile, CompilePhase phase) const {}
283
284 virtual bool flatten_gc_alias_type(const TypePtr*& adr_type) const { return false; }
285 #ifdef ASSERT
286 virtual bool verify_gc_alias_type(const TypePtr* adr_type, int offset) const { return false; }
287 #endif
288 };
289
290 #endif // SHARE_GC_SHARED_C2_BARRIERSETC2_HPP
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