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Side by Side Diff: src/compiler/access-info.h

Issue 2519943002: Version 5.7.4.1 (cherry-pick) (Closed)
Patch Set: Created 4 years ago
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1 // Copyright 2015 the V8 project authors. All rights reserved. 1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_COMPILER_ACCESS_INFO_H_ 5 #ifndef V8_COMPILER_ACCESS_INFO_H_
6 #define V8_COMPILER_ACCESS_INFO_H_ 6 #define V8_COMPILER_ACCESS_INFO_H_
7 7
8 #include <iosfwd> 8 #include <iosfwd>
9 9
10 #include "src/field-index.h" 10 #include "src/field-index.h"
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55 // This class encapsulates all information required to access a certain 55 // This class encapsulates all information required to access a certain
56 // object property, either on the object itself or on the prototype chain. 56 // object property, either on the object itself or on the prototype chain.
57 class PropertyAccessInfo final { 57 class PropertyAccessInfo final {
58 public: 58 public:
59 enum Kind { 59 enum Kind {
60 kInvalid, 60 kInvalid,
61 kNotFound, 61 kNotFound,
62 kDataConstant, 62 kDataConstant,
63 kDataField, 63 kDataField,
64 kAccessorConstant, 64 kAccessorConstant,
65 kFunctionPrototype,
66 kGeneric 65 kGeneric
67 }; 66 };
68 67
69 static PropertyAccessInfo NotFound(MapList const& receiver_maps, 68 static PropertyAccessInfo NotFound(MapList const& receiver_maps,
70 MaybeHandle<JSObject> holder); 69 MaybeHandle<JSObject> holder);
71 static PropertyAccessInfo DataConstant(MapList const& receiver_maps, 70 static PropertyAccessInfo DataConstant(MapList const& receiver_maps,
72 Handle<Object> constant, 71 Handle<Object> constant,
73 MaybeHandle<JSObject> holder); 72 MaybeHandle<JSObject> holder);
74 static PropertyAccessInfo DataField( 73 static PropertyAccessInfo DataField(
75 MapList const& receiver_maps, FieldIndex field_index, 74 MapList const& receiver_maps, FieldIndex field_index,
76 MachineRepresentation field_representation, Type* field_type, 75 MachineRepresentation field_representation, Type* field_type,
77 MaybeHandle<Map> field_map = MaybeHandle<Map>(), 76 MaybeHandle<Map> field_map = MaybeHandle<Map>(),
78 MaybeHandle<JSObject> holder = MaybeHandle<JSObject>(), 77 MaybeHandle<JSObject> holder = MaybeHandle<JSObject>(),
79 MaybeHandle<Map> transition_map = MaybeHandle<Map>()); 78 MaybeHandle<Map> transition_map = MaybeHandle<Map>());
80 static PropertyAccessInfo AccessorConstant(MapList const& receiver_maps, 79 static PropertyAccessInfo AccessorConstant(MapList const& receiver_maps,
81 Handle<Object> constant, 80 Handle<Object> constant,
82 MaybeHandle<JSObject> holder); 81 MaybeHandle<JSObject> holder);
83 static PropertyAccessInfo FunctionPrototype(MapList const& receiver_maps);
84 static PropertyAccessInfo Generic(MapList const& receiver_maps); 82 static PropertyAccessInfo Generic(MapList const& receiver_maps);
85 83
86 PropertyAccessInfo(); 84 PropertyAccessInfo();
87 85
88 bool Merge(PropertyAccessInfo const* that) WARN_UNUSED_RESULT; 86 bool Merge(PropertyAccessInfo const* that) WARN_UNUSED_RESULT;
89 87
90 bool IsNotFound() const { return kind() == kNotFound; } 88 bool IsNotFound() const { return kind() == kNotFound; }
91 bool IsDataConstant() const { return kind() == kDataConstant; } 89 bool IsDataConstant() const { return kind() == kDataConstant; }
92 bool IsDataField() const { return kind() == kDataField; } 90 bool IsDataField() const { return kind() == kDataField; }
93 bool IsAccessorConstant() const { return kind() == kAccessorConstant; } 91 bool IsAccessorConstant() const { return kind() == kAccessorConstant; }
94 bool IsFunctionPrototype() const { return kind() == kFunctionPrototype; }
95 bool IsGeneric() const { return kind() == kGeneric; } 92 bool IsGeneric() const { return kind() == kGeneric; }
96 93
97 bool HasTransitionMap() const { return !transition_map().is_null(); } 94 bool HasTransitionMap() const { return !transition_map().is_null(); }
98 95
99 Kind kind() const { return kind_; } 96 Kind kind() const { return kind_; }
100 MaybeHandle<JSObject> holder() const { return holder_; } 97 MaybeHandle<JSObject> holder() const { return holder_; }
101 MaybeHandle<Map> transition_map() const { return transition_map_; } 98 MaybeHandle<Map> transition_map() const { return transition_map_; }
102 Handle<Object> constant() const { return constant_; } 99 Handle<Object> constant() const { return constant_; }
103 FieldIndex field_index() const { return field_index_; } 100 FieldIndex field_index() const { return field_index_; }
104 Type* field_type() const { return field_type_; } 101 Type* field_type() const { return field_type_; }
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169 Zone* const zone_; 166 Zone* const zone_;
170 167
171 DISALLOW_COPY_AND_ASSIGN(AccessInfoFactory); 168 DISALLOW_COPY_AND_ASSIGN(AccessInfoFactory);
172 }; 169 };
173 170
174 } // namespace compiler 171 } // namespace compiler
175 } // namespace internal 172 } // namespace internal
176 } // namespace v8 173 } // namespace v8
177 174
178 #endif // V8_COMPILER_ACCESS_INFO_H_ 175 #endif // V8_COMPILER_ACCESS_INFO_H_
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