31 class GraphKit;
32
33 class ValueTypeBaseNode : public TypeNode {
34 protected:
35 ValueTypeBaseNode(const Type* t, int nb_fields)
36 : TypeNode(t, nb_fields) {
37 init_class_id(Class_ValueTypeBase);
38 }
39
40 enum { Control, // Control input
41 Oop, // Oop of TypeValueTypePtr
42 Values // Nodes corresponding to values of the value type's fields.
43 // Nodes are connected in increasing order of the index of the field
44 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map.
45 };
46
47 virtual const TypeValueTypePtr* value_type_ptr() const = 0;
48 // Get the klass defining the field layout of the value type
49 virtual ciValueKlass* value_klass() const = 0;
50 int make_scalar_in_safepoint(SafePointNode* sfpt, Node* root, PhaseGVN* gvn);
51 public:
52 // Support for control flow merges
53 bool has_phi_inputs(Node* region);
54 ValueTypeBaseNode* clone_with_phis(PhaseGVN* gvn, Node* region);
55 ValueTypeBaseNode* merge_with(PhaseGVN* gvn, const ValueTypeBaseNode* other, int pnum, bool transform);
56
57 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
58 Node* get_oop() const { return in(Oop); }
59 void set_oop(Node* oop) { set_req(Oop, oop); }
60
61 // Value type fields
62 uint field_count() const { return req() - Values; }
63 Node* field_value(uint index) const;
64 Node* field_value_by_offset(int offset, bool recursive = false) const;
65 void set_field_value(uint index, Node* value);
66 int field_offset(uint index) const;
67 ciType* field_type(uint index) const;
68
69 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes
70 void make_scalar_in_safepoints(Node* root, PhaseGVN* gvn);
71 };
72
73 //------------------------------ValueTypeNode-------------------------------------
74 // Node representing a value type in C2 IR
75 class ValueTypeNode : public ValueTypeBaseNode {
76 friend class ValueTypeBaseNode;
77 private:
78 ValueTypeNode(const TypeValueType* t, Node* oop)
79 : ValueTypeBaseNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) {
80 init_class_id(Class_ValueType);
81 init_req(Oop, oop);
82 }
83
84 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count)
85 : ValueTypeBaseNode(t, Values + field_count) {
86 init_class_id(Class_ValueType);
87 init_req(Oop, oop);
88 }
89
90 // Initialize the value type by loading its field values from memory
91 void load(PhaseGVN& gvn, Node* mem, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0);
92 // Checks if the value type is loaded from memory and if so returns the oop
93 Node* is_loaded(PhaseGVN* phase, const TypeValueType* t, Node* base = NULL, int holder_offset = 0);
94
95 const TypeValueTypePtr* value_type_ptr() const { return TypeValueTypePtr::make(bottom_type()->isa_valuetype()); }
96 // Get the klass defining the field layout of the value type
97 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
98
99 public:
100 // Create a new ValueTypeNode with uninitialized values
101 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass);
102 // Create a new ValueTypeNode with default values
103 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk);
104 // Create a new ValueTypeNode and load its values from an oop
105 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop);
106 // Create a new ValueTypeNode and load its values from a flattened value type field or array
107 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node* mem, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
108
109
110 // Store the value type as a flattened (headerless) representation
111 void store_flattened(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0) const;
112 // Store the field values to memory
113 void store(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0) const;
114
115 // Allocates the value type (if not yet allocated) and returns the oop
116 Node* allocate(GraphKit* kit);
117 bool is_allocated(PhaseGVN* phase) const;
118
119 void pass_klass(Node* n, uint pos, const GraphKit& kit);
120 uint pass_fields(Node* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0);
121 void replace_call_results(Node* call, Compile* C);
122
123 // Allocation optimizations
124 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase);
125
126 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
127 virtual int Opcode() const;
128
129 #ifndef PRODUCT
130 virtual void dump_spec(outputStream* st) const;
131 #endif
132 };
133
134 //------------------------------ValueTypePtrNode-------------------------------------
135 // Node representing a value type as a pointer in C2 IR
136 class ValueTypePtrNode : public ValueTypeBaseNode {
137 private:
138 ciValueKlass* value_klass() const { return type()->is_valuetypeptr()->value_type()->value_klass(); }
139 const TypeValueTypePtr* value_type_ptr() const { return bottom_type()->isa_valuetypeptr(); }
140 public:
141
142 ValueTypePtrNode(ValueTypeNode* vt, Node* oop, Compile* C)
143 : ValueTypeBaseNode(TypeValueTypePtr::make(vt->type()->is_valuetype())->cast_to_ptr_type(TypePtr::NotNull), vt->req()) {
144 init_class_id(Class_ValueTypePtr);
145 for (uint i = Oop+1; i < vt->req(); i++) {
146 init_req(i, vt->in(i));
147 }
148 init_req(Oop, oop);
149 C->add_value_type_ptr(this);
150 }
151
152 virtual int Opcode() const;
153 };
154
155 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP
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31 class GraphKit;
32
33 class ValueTypeBaseNode : public TypeNode {
34 protected:
35 ValueTypeBaseNode(const Type* t, int nb_fields)
36 : TypeNode(t, nb_fields) {
37 init_class_id(Class_ValueTypeBase);
38 }
39
40 enum { Control, // Control input
41 Oop, // Oop of TypeValueTypePtr
42 Values // Nodes corresponding to values of the value type's fields.
43 // Nodes are connected in increasing order of the index of the field
44 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map.
45 };
46
47 virtual const TypeValueTypePtr* value_type_ptr() const = 0;
48 // Get the klass defining the field layout of the value type
49 virtual ciValueKlass* value_klass() const = 0;
50 int make_scalar_in_safepoint(SafePointNode* sfpt, Node* root, PhaseGVN* gvn);
51
52 static void make(PhaseGVN* gvn, Node* n, ValueTypeBaseNode* vt, ciValueKlass* base_vk, int base_offset, int base_input, bool in);
53
54 public:
55 // Support for control flow merges
56 bool has_phi_inputs(Node* region);
57 ValueTypeBaseNode* clone_with_phis(PhaseGVN* gvn, Node* region);
58 ValueTypeBaseNode* merge_with(PhaseGVN* gvn, const ValueTypeBaseNode* other, int pnum, bool transform);
59
60 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
61 Node* get_oop() const { return in(Oop); }
62 void set_oop(Node* oop) { set_req(Oop, oop); }
63
64 // Value type fields
65 uint field_count() const { return req() - Values; }
66 Node* field_value(uint index) const;
67 Node* field_value_by_offset(int offset, bool recursive = false) const;
68 void set_field_value(uint index, Node* value);
69 int field_offset(uint index) const;
70 ciType* field_type(uint index) const;
71
72 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes
73 void make_scalar_in_safepoints(Node* root, PhaseGVN* gvn);
74
75 void store_flattened(PhaseGVN* gvn, Node* ctl, MergeMemNode* mem, Node* base, ciValueKlass* holder, int holder_offset) const;
76 void store(PhaseGVN* gvn, Node* ctl, MergeMemNode* mem, Node* base, ciValueKlass* holder = NULL, int holder_offset = 0) const;
77
78 // Initialize the value type by loading its field values from memory
79 void load(PhaseGVN& gvn, Node* mem, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0);
80
81 void replace_call_results(Node* call, Compile* C);
82
83 static Node* allocate(const Type* type,
84 Node*& ctl, Node*& mem, Node*& io,
85 Node* frameptr,
86 Node*& ex_ctl, Node*& ex_mem, Node*& ex_io,
87 JVMState* jvms, PhaseIterGVN *igvn);
88 };
89
90 //------------------------------ValueTypeNode-------------------------------------
91 // Node representing a value type in C2 IR
92 class ValueTypeNode : public ValueTypeBaseNode {
93 friend class ValueTypeBaseNode;
94 private:
95 ValueTypeNode(const TypeValueType* t, Node* oop)
96 : ValueTypeBaseNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) {
97 init_class_id(Class_ValueType);
98 init_req(Oop, oop);
99 }
100
101 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count)
102 : ValueTypeBaseNode(t, Values + field_count) {
103 init_class_id(Class_ValueType);
104 init_req(Oop, oop);
105 }
106
107 // Checks if the value type is loaded from memory and if so returns the oop
108 Node* is_loaded(PhaseGVN* phase, const TypeValueType* t, Node* base = NULL, int holder_offset = 0);
109
110 const TypeValueTypePtr* value_type_ptr() const { return TypeValueTypePtr::make(bottom_type()->isa_valuetype()); }
111 // Get the klass defining the field layout of the value type
112 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
113
114 public:
115 // Create a new ValueTypeNode with uninitialized values
116 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass);
117 // Create a new ValueTypeNode with default values
118 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk);
119 // Create a new ValueTypeNode and load its values from an oop
120 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop);
121 // Create a new ValueTypeNode and load its values from a flattened value type field or array
122 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node* mem, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
123 // Create value type node from arguments at method entry and calls
124 static Node* make(PhaseGVN& gvn, Node* n, ciValueKlass* vk, int base_input, bool in);
125
126 // Store the value type as a flattened (headerless) representation
127 void store_flattened(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0) const;
128 // Store the field values to memory
129 void store(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0) const;
130
131 // Allocates the value type (if not yet allocated) and returns the oop
132 Node* allocate(GraphKit* kit);
133 bool is_allocated(PhaseGVN* phase) const;
134
135 void pass_klass(Node* n, uint pos, const GraphKit& kit);
136 uint pass_fields(Node* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0);
137
138 // Allocation optimizations
139 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase);
140
141 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
142 virtual int Opcode() const;
143
144 #ifndef PRODUCT
145 virtual void dump_spec(outputStream* st) const;
146 #endif
147 };
148
149 //------------------------------ValueTypePtrNode-------------------------------------
150 // Node representing a value type as a pointer in C2 IR
151 class ValueTypePtrNode : public ValueTypeBaseNode {
152 private:
153 ciValueKlass* value_klass() const { return type()->is_valuetypeptr()->value_type()->value_klass(); }
154 const TypeValueTypePtr* value_type_ptr() const { return bottom_type()->isa_valuetypeptr(); }
155
156 ValueTypePtrNode(ciValueKlass* vk, Compile* C)
157 : ValueTypeBaseNode(TypeValueTypePtr::make(TypePtr::NotNull, vk), Values + vk->nof_declared_nonstatic_fields()) {
158 init_class_id(Class_ValueTypePtr);
159 C->add_value_type_ptr(this);
160 }
161 public:
162
163 ValueTypePtrNode(ValueTypeNode* vt, Node* oop, Compile* C)
164 : ValueTypeBaseNode(TypeValueTypePtr::make(vt->type()->is_valuetype())->cast_to_ptr_type(TypePtr::NotNull), vt->req()) {
165 init_class_id(Class_ValueTypePtr);
166 for (uint i = Oop+1; i < vt->req(); i++) {
167 init_req(i, vt->in(i));
168 }
169 init_req(Oop, oop);
170 C->add_value_type_ptr(this);
171 }
172
173 static ValueTypePtrNode* make(PhaseGVN* gvn, CheckCastPPNode* cast);
174 static ValueTypePtrNode* make(PhaseGVN& gvn, Node* mem, Node* oop);
175 virtual int Opcode() const;
176 };
177
178 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP
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