30
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 Node* tagged_klass(PhaseGVN& gvn);
136 void pass_klass(Node* n, uint pos, const GraphKit& kit);
137 uint pass_fields(Node* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0);
138
139 // Allocation optimizations
140 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase);
141
142 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
143 virtual int Opcode() const;
144
145 #ifndef PRODUCT
146 virtual void dump_spec(outputStream* st) const;
147 #endif
148 };
149
150 //------------------------------ValueTypePtrNode-------------------------------------
151 // Node representing a value type as a pointer in C2 IR
152 class ValueTypePtrNode : public ValueTypeBaseNode {
153 private:
154 ciValueKlass* value_klass() const { return type()->is_valuetypeptr()->value_type()->value_klass(); }
155 const TypeValueTypePtr* value_type_ptr() const { return bottom_type()->isa_valuetypeptr(); }
156
157 ValueTypePtrNode(ciValueKlass* vk, Compile* C)
158 : ValueTypeBaseNode(TypeValueTypePtr::make(TypePtr::NotNull, vk), Values + vk->nof_declared_nonstatic_fields()) {
159 init_class_id(Class_ValueTypePtr);
160 C->add_value_type_ptr(this);
161 }
162 public:
163
164 ValueTypePtrNode(ValueTypeNode* vt, Node* oop, Compile* C)
165 : ValueTypeBaseNode(TypeValueTypePtr::make(vt->type()->is_valuetype())->cast_to_ptr_type(TypePtr::NotNull), vt->req()) {
166 init_class_id(Class_ValueTypePtr);
167 for (uint i = Oop+1; i < vt->req(); i++) {
168 init_req(i, vt->in(i));
169 }
170 init_req(Oop, oop);
171 C->add_value_type_ptr(this);
172 }
173
174 static ValueTypePtrNode* make(PhaseGVN* gvn, CheckCastPPNode* cast);
175 static ValueTypePtrNode* make(PhaseGVN& gvn, Node* mem, Node* oop);
176 virtual int Opcode() const;
177 };
178
179 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP
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30
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(Unique_Node_List& worklist, SafePointNode* sfpt, Node* root, PhaseGVN* gvn);
51
52 static void make(PhaseGVN* gvn, Node*& ctl, Node* mem, 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 bool field_is_flattened(uint index) const;
72
73 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes
74 void make_scalar_in_safepoints(Node* root, PhaseGVN* gvn);
75
76 // Store the value type as a flattened (headerless) representation
77 void store_flattened(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0) const;
78 // Store the field values to memory
79 void store(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0) const;
80
81 // Initialize the value type by loading its field values from memory
82 void load(PhaseGVN& gvn, Node*& ctl, Node* mem, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0);
83
84 // Allocates the value type (if not yet allocated) and returns the oop
85 ValueTypeBaseNode* allocate(GraphKit* kit);
86 bool is_allocated(PhaseGVN* phase) const;
87
88 void replace_call_results(GraphKit* kit, Node* call, Compile* C);
89 };
90
91 //------------------------------ValueTypeNode-------------------------------------
92 // Node representing a value type in C2 IR
93 class ValueTypeNode : public ValueTypeBaseNode {
94 friend class ValueTypeBaseNode;
95 private:
96 ValueTypeNode(const TypeValueType* t, Node* oop)
97 : ValueTypeBaseNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) {
98 init_class_id(Class_ValueType);
99 init_req(Oop, oop);
100 }
101
102 // Checks if the value type is loaded from memory and if so returns the oop
103 Node* is_loaded(PhaseGVN* phase, const TypeValueType* t, Node* base = NULL, int holder_offset = 0);
104
105 const TypeValueTypePtr* value_type_ptr() const { return TypeValueTypePtr::make(bottom_type()->isa_valuetype()); }
106 // Get the klass defining the field layout of the value type
107 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
108
109 public:
110 // Create a new ValueTypeNode with uninitialized values
111 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass);
112 // Create a new ValueTypeNode with default values
113 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk);
114 // Create a new ValueTypeNode and load its values from an oop
115 static Node* make(GraphKit* kit, Node* oop, bool null_check = false);
116 static Node* make(PhaseGVN& gvn, Node*& ctl, Node* mem, Node* oop, bool null_check = false);
117 // Create a new ValueTypeNode and load its values from a flattened value type field or array
118 static Node* make(GraphKit* kit, ciValueKlass* vk, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
119 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node*& ctl, Node* mem, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
120 // Create value type node from arguments at method entry and calls
121 static Node* make(PhaseGVN& gvn, Node*& ctl, Node* mem, Node* n, ciValueKlass* vk, int base_input, bool in);
122
123 // Allocate all non-flattened value type fields
124 Node* allocate_fields(GraphKit* kit);
125
126 Node* tagged_klass(PhaseGVN& gvn);
127 void pass_klass(Node* n, uint pos, const GraphKit& kit);
128 uint pass_fields(Node* call, int base_input, GraphKit& kit, bool assert_allocated = false, ciValueKlass* base_vk = NULL, int base_offset = 0);
129
130 // Allocation optimizations
131 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase);
132
133 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
134 virtual int Opcode() const;
135
136 #ifndef PRODUCT
137 virtual void dump_spec(outputStream* st) const;
138 #endif
139 };
140
141 //------------------------------ValueTypePtrNode-------------------------------------
142 // Node representing a value type as a pointer in C2 IR
143 class ValueTypePtrNode : public ValueTypeBaseNode {
144 private:
145 ciValueKlass* value_klass() const { return type()->is_valuetypeptr()->value_type()->value_klass(); }
146 const TypeValueTypePtr* value_type_ptr() const { return bottom_type()->isa_valuetypeptr(); }
147
148 ValueTypePtrNode(ciValueKlass* vk, Node* oop, Compile* C)
149 : ValueTypeBaseNode(TypeValueTypePtr::make(TypePtr::NotNull, vk), Values + vk->nof_declared_nonstatic_fields()) {
150 init_class_id(Class_ValueTypePtr);
151 init_req(Oop, oop);
152 C->add_value_type_ptr(this);
153 }
154 public:
155
156 ValueTypePtrNode(ValueTypeNode* vt, Node* oop, Compile* C)
157 : ValueTypeBaseNode(TypeValueTypePtr::make(vt->type()->is_valuetype())->cast_to_ptr_type(TypePtr::NotNull), vt->req()) {
158 init_class_id(Class_ValueTypePtr);
159 for (uint i = Oop+1; i < vt->req(); i++) {
160 init_req(i, vt->in(i));
161 }
162 init_req(Oop, oop);
163 C->add_value_type_ptr(this);
164 }
165
166 static ValueTypePtrNode* make(GraphKit* kit, ciValueKlass* vk, CallNode* call);
167 static ValueTypePtrNode* make(PhaseGVN& gvn, Node*& ctl, Node* mem, Node* oop);
168 virtual int Opcode() const;
169 };
170
171 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP
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