34 protected:
35 ValueTypeBaseNode(const Type* t, int nb_fields)
36 : TypeNode(t, nb_fields) {
37 init_class_id(Class_ValueTypeBase);
38 Compile::current()->add_value_type(this);
39 }
40
41 enum { Control, // Control input
42 Oop, // Oop of TypeInstPtr
43 Values // Nodes corresponding to values of the value type's fields.
44 // Nodes are connected in increasing order of the index of the field they correspond to.
45 };
46
47 virtual const TypeInstPtr* value_ptr() const = 0;
48 // Get the klass defining the field layout of the value type
49 virtual ciValueKlass* value_klass() const = 0;
50
51 int make_scalar_in_safepoint(Unique_Node_List& worklist, SafePointNode* sfpt, Node* root, PhaseGVN* gvn);
52
53 // Initialize the value type fields with the inputs or outputs of a MultiNode
54 void initialize(GraphKit* kit, MultiNode* multi, ciValueKlass* vk, int base_offset = 0, int base_input = TypeFunc::Parms+1, bool in = false);
55
56 const TypePtr* field_adr_type(Node* base, int offset, ciInstanceKlass* holder, PhaseGVN& gvn) const;
57
58 public:
59 // Support for control flow merges
60 bool has_phi_inputs(Node* region);
61 ValueTypeBaseNode* clone_with_phis(PhaseGVN* gvn, Node* region);
62 ValueTypeBaseNode* merge_with(PhaseGVN* gvn, const ValueTypeBaseNode* other, int pnum, bool transform);
63 void add_new_path(Node* region);
64
65 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
66 Node* get_oop() const { return in(Oop); }
67 void set_oop(Node* oop) { set_req(Oop, oop); }
68
69 // Value type fields
70 uint field_count() const { return req() - Values; }
71 Node* field_value(uint index) const;
72 Node* field_value_by_offset(int offset, bool recursive = false) const;
73 void set_field_value(uint index, Node* value);
74 void set_field_value_by_offset(int offset, Node* value);
108
109 // Checks if the value type is loaded from memory and if so returns the oop
110 Node* is_loaded(PhaseGVN* phase, ciValueKlass* vk = NULL, Node* base = NULL, int holder_offset = 0);
111
112 // Checks if the value type fields are all set to default values
113 bool is_default(PhaseGVN& gvn) const;
114
115 const TypeInstPtr* value_ptr() const { return TypeInstPtr::make(TypePtr::BotPTR, value_klass()); }
116 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
117
118 public:
119 // Create uninitialized
120 static ValueTypeNode* make_uninitialized(PhaseGVN& gvn, ciValueKlass* vk);
121 // Create with default field values
122 static ValueTypeNode* make_default(PhaseGVN& gvn, ciValueKlass* vk);
123 // Create and initialize by loading the field values from an oop
124 static ValueTypeNode* make_from_oop(GraphKit* kit, Node* oop, ciValueKlass* vk);
125 // Create and initialize by loading the field values from a flattened field or array
126 static ValueTypeNode* make_from_flattened(GraphKit* kit, ciValueKlass* vk, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
127 // Create and initialize with the inputs or outputs of a MultiNode (method entry or call)
128 static ValueTypeNode* make_from_multi(GraphKit* kit, MultiNode* multi, ciValueKlass* vk, int base_input, bool in);
129
130 // Returns the constant oop of the default value type allocation
131 static Node* default_oop(PhaseGVN& gvn, ciValueKlass* vk);
132
133 // Allocate all non-flattened value type fields
134 Node* allocate_fields(GraphKit* kit);
135
136 Node* tagged_klass(PhaseGVN& gvn);
137 void pass_klass(Node* n, uint pos, const GraphKit& kit);
138 uint pass_fields(Node* call, int base_input, GraphKit& kit, bool assert_allocated = false, ciValueKlass* base_vk = NULL, int base_offset = 0);
139
140 // Allocation optimizations
141 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase);
142
143 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
144 virtual int Opcode() const;
145 };
146
147 //------------------------------ValueTypePtrNode-------------------------------------
148 // Node representing a value type as a pointer in C2 IR
149 class ValueTypePtrNode : public ValueTypeBaseNode {
150 private:
151 const TypeInstPtr* value_ptr() const { return type()->isa_instptr(); }
152 ciValueKlass* value_klass() const { return value_ptr()->value_klass(); }
153
154 ValueTypePtrNode(ciValueKlass* vk, Node* oop)
155 : ValueTypeBaseNode(TypeInstPtr::make(TypePtr::NotNull, vk), Values + vk->nof_declared_nonstatic_fields()) {
156 init_class_id(Class_ValueTypePtr);
157 init_req(Oop, oop);
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34 protected:
35 ValueTypeBaseNode(const Type* t, int nb_fields)
36 : TypeNode(t, nb_fields) {
37 init_class_id(Class_ValueTypeBase);
38 Compile::current()->add_value_type(this);
39 }
40
41 enum { Control, // Control input
42 Oop, // Oop of TypeInstPtr
43 Values // Nodes corresponding to values of the value type's fields.
44 // Nodes are connected in increasing order of the index of the field they correspond to.
45 };
46
47 virtual const TypeInstPtr* value_ptr() const = 0;
48 // Get the klass defining the field layout of the value type
49 virtual ciValueKlass* value_klass() const = 0;
50
51 int make_scalar_in_safepoint(Unique_Node_List& worklist, SafePointNode* sfpt, Node* root, PhaseGVN* gvn);
52
53 // Initialize the value type fields with the inputs or outputs of a MultiNode
54 void initialize(GraphKit* kit, MultiNode* multi, ciValueKlass* vk, int base_offset, uint& base_input, bool in);
55
56 const TypePtr* field_adr_type(Node* base, int offset, ciInstanceKlass* holder, PhaseGVN& gvn) const;
57
58 public:
59 // Support for control flow merges
60 bool has_phi_inputs(Node* region);
61 ValueTypeBaseNode* clone_with_phis(PhaseGVN* gvn, Node* region);
62 ValueTypeBaseNode* merge_with(PhaseGVN* gvn, const ValueTypeBaseNode* other, int pnum, bool transform);
63 void add_new_path(Node* region);
64
65 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
66 Node* get_oop() const { return in(Oop); }
67 void set_oop(Node* oop) { set_req(Oop, oop); }
68
69 // Value type fields
70 uint field_count() const { return req() - Values; }
71 Node* field_value(uint index) const;
72 Node* field_value_by_offset(int offset, bool recursive = false) const;
73 void set_field_value(uint index, Node* value);
74 void set_field_value_by_offset(int offset, Node* value);
108
109 // Checks if the value type is loaded from memory and if so returns the oop
110 Node* is_loaded(PhaseGVN* phase, ciValueKlass* vk = NULL, Node* base = NULL, int holder_offset = 0);
111
112 // Checks if the value type fields are all set to default values
113 bool is_default(PhaseGVN& gvn) const;
114
115 const TypeInstPtr* value_ptr() const { return TypeInstPtr::make(TypePtr::BotPTR, value_klass()); }
116 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
117
118 public:
119 // Create uninitialized
120 static ValueTypeNode* make_uninitialized(PhaseGVN& gvn, ciValueKlass* vk);
121 // Create with default field values
122 static ValueTypeNode* make_default(PhaseGVN& gvn, ciValueKlass* vk);
123 // Create and initialize by loading the field values from an oop
124 static ValueTypeNode* make_from_oop(GraphKit* kit, Node* oop, ciValueKlass* vk);
125 // Create and initialize by loading the field values from a flattened field or array
126 static ValueTypeNode* make_from_flattened(GraphKit* kit, ciValueKlass* vk, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0);
127 // Create and initialize with the inputs or outputs of a MultiNode (method entry or call)
128 static ValueTypeNode* make_from_multi(GraphKit* kit, MultiNode* multi, ciValueKlass* vk, uint& base_input, bool in);
129
130 // Returns the constant oop of the default value type allocation
131 static Node* default_oop(PhaseGVN& gvn, ciValueKlass* vk);
132
133 // Allocate all non-flattened value type fields
134 Node* allocate_fields(GraphKit* kit);
135
136 Node* tagged_klass(PhaseGVN& gvn);
137 uint pass_fields(Node* call, int base_input, GraphKit& kit, bool assert_allocated = false, 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
146 //------------------------------ValueTypePtrNode-------------------------------------
147 // Node representing a value type as a pointer in C2 IR
148 class ValueTypePtrNode : public ValueTypeBaseNode {
149 private:
150 const TypeInstPtr* value_ptr() const { return type()->isa_instptr(); }
151 ciValueKlass* value_klass() const { return value_ptr()->value_klass(); }
152
153 ValueTypePtrNode(ciValueKlass* vk, Node* oop)
154 : ValueTypeBaseNode(TypeInstPtr::make(TypePtr::NotNull, vk), Values + vk->nof_declared_nonstatic_fields()) {
155 init_class_id(Class_ValueTypePtr);
156 init_req(Oop, oop);
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