access-builder.h revision bcf72ee8e3b26f1d0726869c7ddb3921c68b09a8 
1// Copyright 2014 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef V8_COMPILER_ACCESS_BUILDER_H_
6#define V8_COMPILER_ACCESS_BUILDER_H_
7
8#include "src/compiler/simplified-operator.h"
9
10namespace v8 {
11namespace internal {
12namespace compiler {
13
14// This access builder provides a set of static methods constructing commonly
15// used FieldAccess and ElementAccess descriptors. These descriptors serve as
16// parameters to simplified load/store operators.
17class AccessBuilder final : public AllStatic {
18 public:
19  // ===========================================================================
20  // Access to heap object fields and elements (based on tagged pointer).
21
22  // Provides access to HeapObject::map() field.
23  static FieldAccess ForMap();
24
25  // Provides access to HeapNumber::value() field.
26  static FieldAccess ForHeapNumberValue();
27
28  // Provides access to JSObject::properties() field.
29  static FieldAccess ForJSObjectProperties();
30
31  // Provides access to JSObject::elements() field.
32  static FieldAccess ForJSObjectElements();
33
34  // Provides access to JSObject inobject property fields.
35  static FieldAccess ForJSObjectInObjectProperty(Handle<Map> map, int index);
36
37  // Provides access to JSFunction::prototype_or_initial_map() field.
38  static FieldAccess ForJSFunctionPrototypeOrInitialMap();
39
40  // Provides access to JSFunction::context() field.
41  static FieldAccess ForJSFunctionContext();
42
43  // Provides access to JSFunction::shared() field.
44  static FieldAccess ForJSFunctionSharedFunctionInfo();
45
46  // Provides access to JSFunction::literals() field.
47  static FieldAccess ForJSFunctionLiterals();
48
49  // Provides access to JSFunction::code() field.
50  static FieldAccess ForJSFunctionCodeEntry();
51
52  // Provides access to JSFunction::next_function_link() field.
53  static FieldAccess ForJSFunctionNextFunctionLink();
54
55  // Provides access to JSArray::length() field.
56  static FieldAccess ForJSArrayLength(ElementsKind elements_kind);
57
58  // Provides access to JSArrayBuffer::backing_store() field.
59  static FieldAccess ForJSArrayBufferBackingStore();
60
61  // Provides access to JSArrayBuffer::bit_field() field.
62  static FieldAccess ForJSArrayBufferBitField();
63
64  // Provides access to JSArrayBufferView::buffer() field.
65  static FieldAccess ForJSArrayBufferViewBuffer();
66
67  // Provides access to JSDate fields.
68  static FieldAccess ForJSDateField(JSDate::FieldIndex index);
69
70  // Provides access to JSIteratorResult::done() field.
71  static FieldAccess ForJSIteratorResultDone();
72
73  // Provides access to JSIteratorResult::value() field.
74  static FieldAccess ForJSIteratorResultValue();
75
76  // Provides access to JSRegExp::flags() field.
77  static FieldAccess ForJSRegExpFlags();
78
79  // Provides access to JSRegExp::source() field.
80  static FieldAccess ForJSRegExpSource();
81
82  // Provides access to FixedArray::length() field.
83  static FieldAccess ForFixedArrayLength();
84
85  // Provides access to DescriptorArray::enum_cache() field.
86  static FieldAccess ForDescriptorArrayEnumCache();
87
88  // Provides access to DescriptorArray::enum_cache_bridge_cache() field.
89  static FieldAccess ForDescriptorArrayEnumCacheBridgeCache();
90
91  // Provides access to Map::bit_field() byte.
92  static FieldAccess ForMapBitField();
93
94  // Provides access to Map::bit_field3() field.
95  static FieldAccess ForMapBitField3();
96
97  // Provides access to Map::descriptors() field.
98  static FieldAccess ForMapDescriptors();
99
100  // Provides access to Map::instance_type() field.
101  static FieldAccess ForMapInstanceType();
102
103  // Provides access to Map::prototype() field.
104  static FieldAccess ForMapPrototype();
105
106  // Provides access to String::length() field.
107  static FieldAccess ForStringLength();
108
109  // Provides access to JSGlobalObject::global_proxy() field.
110  static FieldAccess ForJSGlobalObjectGlobalProxy();
111
112  // Provides access to JSGlobalObject::native_context() field.
113  static FieldAccess ForJSGlobalObjectNativeContext();
114
115  // Provides access to JSValue::value() field.
116  static FieldAccess ForValue();
117
118  // Provides access to arguments object fields.
119  static FieldAccess ForArgumentsLength();
120  static FieldAccess ForArgumentsCallee();
121
122  // Provides access to FixedArray slots.
123  static FieldAccess ForFixedArraySlot(size_t index);
124
125  // Provides access to Context slots.
126  static FieldAccess ForContextSlot(size_t index);
127
128  // Provides access to PropertyCell::value() field.
129  static FieldAccess ForPropertyCellValue();
130  static FieldAccess ForPropertyCellValue(Type* type);
131
132  // Provides access to SharedFunctionInfo::feedback_vector() field.
133  static FieldAccess ForSharedFunctionInfoTypeFeedbackVector();
134
135  // Provides access to FixedArray elements.
136  static ElementAccess ForFixedArrayElement();
137
138  // Provides access to FixedDoubleArray elements.
139  static ElementAccess ForFixedDoubleArrayElement();
140
141  // Provides access to Fixed{type}TypedArray and External{type}Array elements.
142  static ElementAccess ForTypedArrayElement(ExternalArrayType type,
143                                            bool is_external);
144
145 private:
146  DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder);
147};
148
149}  // namespace compiler
150}  // namespace internal
151}  // namespace v8
152
153#endif  // V8_COMPILER_ACCESS_BUILDER_H_
154