91
92 public:
93 static ShenandoahBarrierSetC2* bsc2();
94
95 static bool is_shenandoah_wb_pre_call(Node* call);
96 static bool is_shenandoah_lrb_call(Node* call);
97 static bool is_shenandoah_marking_if(PhaseTransform *phase, Node* n);
98 static bool is_shenandoah_state_load(Node* n);
99 static bool has_only_shenandoah_wb_pre_uses(Node* n);
100
101 ShenandoahBarrierSetC2State* state() const;
102
103 static const TypeFunc* write_ref_field_pre_entry_Type();
104 static const TypeFunc* shenandoah_clone_barrier_Type();
105 static const TypeFunc* shenandoah_load_reference_barrier_Type();
106 virtual bool has_load_barriers() const { return true; }
107
108 // This is the entry-point for the backend to perform accesses through the Access API.
109 virtual void clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array) const;
110
111 // These are general helper methods used by C2
112 virtual bool array_copy_requires_gc_barriers(BasicType type) const;
113
114 // Support for GC barriers emitted during parsing
115 virtual bool is_gc_barrier_node(Node* node) const;
116 virtual Node* step_over_gc_barrier(Node* c) const;
117 virtual bool expand_barriers(Compile* C, PhaseIterGVN& igvn) const;
118 virtual bool optimize_loops(PhaseIdealLoop* phase, LoopOptsMode mode, VectorSet& visited, Node_Stack& nstack, Node_List& worklist) const;
119 virtual bool strip_mined_loops_expanded(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand || mode == LoopOptsShenandoahPostExpand; }
120 virtual bool is_gc_specific_loop_opts_pass(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand || mode == LoopOptsShenandoahPostExpand; }
121
122 // Support for macro expanded GC barriers
123 virtual void register_potential_barrier_node(Node* node) const;
124 virtual void unregister_potential_barrier_node(Node* node) const;
125 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
126 virtual void enqueue_useful_gc_barrier(Unique_Node_List &worklist, Node* node) const;
127 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful) const;
128 virtual void add_users_to_worklist(Unique_Node_List* worklist) const;
129
130 // Allow barrier sets to have shared state that is preserved across a compilation unit.
|
91
92 public:
93 static ShenandoahBarrierSetC2* bsc2();
94
95 static bool is_shenandoah_wb_pre_call(Node* call);
96 static bool is_shenandoah_lrb_call(Node* call);
97 static bool is_shenandoah_marking_if(PhaseTransform *phase, Node* n);
98 static bool is_shenandoah_state_load(Node* n);
99 static bool has_only_shenandoah_wb_pre_uses(Node* n);
100
101 ShenandoahBarrierSetC2State* state() const;
102
103 static const TypeFunc* write_ref_field_pre_entry_Type();
104 static const TypeFunc* shenandoah_clone_barrier_Type();
105 static const TypeFunc* shenandoah_load_reference_barrier_Type();
106 virtual bool has_load_barriers() const { return true; }
107
108 // This is the entry-point for the backend to perform accesses through the Access API.
109 virtual void clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array) const;
110
111 virtual void clone_at_expansion(PhaseMacroExpand* phase, ArrayCopyNode* ac) const;
112
113 // These are general helper methods used by C2
114 virtual bool array_copy_requires_gc_barriers(BasicType type) const;
115
116 // Support for GC barriers emitted during parsing
117 virtual bool is_gc_barrier_node(Node* node) const;
118 virtual Node* step_over_gc_barrier(Node* c) const;
119 virtual bool expand_barriers(Compile* C, PhaseIterGVN& igvn) const;
120 virtual bool optimize_loops(PhaseIdealLoop* phase, LoopOptsMode mode, VectorSet& visited, Node_Stack& nstack, Node_List& worklist) const;
121 virtual bool strip_mined_loops_expanded(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand || mode == LoopOptsShenandoahPostExpand; }
122 virtual bool is_gc_specific_loop_opts_pass(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand || mode == LoopOptsShenandoahPostExpand; }
123
124 // Support for macro expanded GC barriers
125 virtual void register_potential_barrier_node(Node* node) const;
126 virtual void unregister_potential_barrier_node(Node* node) const;
127 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
128 virtual void enqueue_useful_gc_barrier(Unique_Node_List &worklist, Node* node) const;
129 virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful) const;
130 virtual void add_users_to_worklist(Unique_Node_List* worklist) const;
131
132 // Allow barrier sets to have shared state that is preserved across a compilation unit.
|