32
33 //------------------------------ValueTypeNode-------------------------------------
34 // Node representing a value type in C2 IR
35 class ValueTypeNode : public TypeNode {
36 private:
37 ValueTypeNode(const TypeValueType* t, Node* oop)
38 : TypeNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) {
39 init_class_id(Class_ValueType);
40 init_req(Oop, oop);
41 }
42
43 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count)
44 : TypeNode(t, Values + field_count) {
45 init_class_id(Class_ValueType);
46 init_req(Oop, oop);
47 }
48
49 // Get the klass defining the field layout of the value type
50 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
51 // Initialize the value type by loading its field values from memory
52 void load_values(PhaseGVN& gvn, Node* mem, ciInstanceKlass* holder, Node* base, int base_offset = 0);
53
54 enum { Control, // Control input
55 Oop, // Oop of TypeValueTypePtr
56 Values // Nodes corresponding to values of the value type's fields.
57 // Nodes are connected in increasing order of the index of the field
58 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map.
59 };
60
61 public:
62 // Create a new ValueTypeNode with uninitialized values
63 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass);
64 // Create a new ValueTypeNode and load its values from an oop
65 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop);
66 // Create a new ValueTypeNode and load its values from a flattened value type field
67 static Node* make(PhaseGVN& gvn, ciValueKlass* klass, Node* mem, ciInstanceKlass* holder, Node* obj, int field_offset);
68
69 // Support for control flow merges
70 ValueTypeNode* clone_with_phis(PhaseGVN& gvn, Node* region);
71 bool has_phi_inputs(Node* region);
72 Node* merge_with(GraphKit* kit, const ValueTypeNode* other, int pnum);
73
74 // Store the value type to memory if not yet allocated and returns the oop
75 Node* store_to_memory(GraphKit* kit);
76 // Store the value type in a field of an object
77 void store_to_field(GraphKit* kit, ciInstanceKlass* holder, Node* obj, int field_offset) const;
78 // Store the field values to memory
79 void store_values(GraphKit* kit, ciInstanceKlass* holder, Node* base, int base_offset = 0) const;
80
81 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
82 Node* get_oop() const { return in(Oop); }
83 void set_oop(Node* oop) { set_req(Oop, oop); }
84
85 // Value type fields
86 uint field_count() const { return req() - Values; }
87 Node* field_value(uint index) const;
88 Node* field_value_by_offset(int offset, bool recursive = false) const;
89 void set_field_value(uint index, Node* value);
90 int field_offset(uint index) const;
91 ciType* field_type(uint index) const;
92
93 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes
94 void make_scalar_in_safepoints(Compile* C);
95 uint set_arguments_for_java_call(CallJavaNode* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0);
96 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
97 virtual int Opcode() const;
98
99 #ifndef PRODUCT
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32
33 //------------------------------ValueTypeNode-------------------------------------
34 // Node representing a value type in C2 IR
35 class ValueTypeNode : public TypeNode {
36 private:
37 ValueTypeNode(const TypeValueType* t, Node* oop)
38 : TypeNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) {
39 init_class_id(Class_ValueType);
40 init_req(Oop, oop);
41 }
42
43 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count)
44 : TypeNode(t, Values + field_count) {
45 init_class_id(Class_ValueType);
46 init_req(Oop, oop);
47 }
48
49 // Get the klass defining the field layout of the value type
50 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); }
51 // Initialize the value type by loading its field values from memory
52 void load_values(PhaseGVN& gvn, Node* mem, Node* base, Node* ptr, ciKlass* holder = NULL, int f_offset = 0);
53
54 enum { Control, // Control input
55 Oop, // Oop of TypeValueTypePtr
56 Values // Nodes corresponding to values of the value type's fields.
57 // Nodes are connected in increasing order of the index of the field
58 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map.
59 };
60
61 public:
62 // Create a new ValueTypeNode with uninitialized values
63 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass);
64 // Create a new ValueTypeNode with default values
65 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk);
66 // Create a new ValueTypeNode and load its values from an oop
67 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop);
68 // Create a new ValueTypeNode and load its values from a flattened value type field or array
69 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node* mem, Node* obj, Node* ptr, ciKlass* holder, int field_offset = 0);
70
71 // Support for control flow merges
72 ValueTypeNode* clone_with_phis(PhaseGVN& gvn, Node* region);
73 bool has_phi_inputs(Node* region);
74 Node* merge_with(GraphKit* kit, const ValueTypeNode* other, int pnum);
75
76 // Store the value type to memory if not yet allocated and returns the oop
77 Node* store_to_memory(GraphKit* kit);
78 // Store the value type in a field of an object
79 void store_to_field(GraphKit* kit, Node* obj, Node* ptr, ciInstanceKlass* instance_type, int field_offset) const;
80 // Store the field values to memory
81 void store_values(GraphKit* kit, Node* base, Node* ptr, ciKlass* holder = NULL, int holder_offset = 0) const;
82
83 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR)
84 Node* get_oop() const { return in(Oop); }
85 void set_oop(Node* oop) { set_req(Oop, oop); }
86
87 // Value type fields
88 uint field_count() const { return req() - Values; }
89 Node* field_value(uint index) const;
90 Node* field_value_by_offset(int offset, bool recursive = false) const;
91 void set_field_value(uint index, Node* value);
92 int field_offset(uint index) const;
93 ciType* field_type(uint index) const;
94
95 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes
96 void make_scalar_in_safepoints(Compile* C);
97 uint set_arguments_for_java_call(CallJavaNode* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0);
98 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);
99 virtual int Opcode() const;
100
101 #ifndef PRODUCT
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