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 10 namespace v8 { 11 namespace internal { 12 namespace 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. 17 class 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::context() field. 38 static FieldAccess ForJSFunctionContext(); 39 40 // Provides access to JSFunction::shared() field. 41 static FieldAccess ForJSFunctionSharedFunctionInfo(); 42 43 // Provides access to JSArray::length() field. 44 static FieldAccess ForJSArrayLength(ElementsKind elements_kind); 45 46 // Provides access to JSArrayBuffer::backing_store() field. 47 static FieldAccess ForJSArrayBufferBackingStore(); 48 49 // Provides access to JSArrayBuffer::bit_field() field. 50 static FieldAccess ForJSArrayBufferBitField(); 51 52 // Provides access to JSArrayBufferView::buffer() field. 53 static FieldAccess ForJSArrayBufferViewBuffer(); 54 55 // Provides access to JSDate fields. 56 static FieldAccess ForJSDateField(JSDate::FieldIndex index); 57 58 // Provides access to JSIteratorResult::done() field. 59 static FieldAccess ForJSIteratorResultDone(); 60 61 // Provides access to JSIteratorResult::value() field. 62 static FieldAccess ForJSIteratorResultValue(); 63 64 // Provides access to JSRegExp::flags() field. 65 static FieldAccess ForJSRegExpFlags(); 66 67 // Provides access to JSRegExp::source() field. 68 static FieldAccess ForJSRegExpSource(); 69 70 // Provides access to FixedArray::length() field. 71 static FieldAccess ForFixedArrayLength(); 72 73 // Provides access to DescriptorArray::enum_cache() field. 74 static FieldAccess ForDescriptorArrayEnumCache(); 75 76 // Provides access to DescriptorArray::enum_cache_bridge_cache() field. 77 static FieldAccess ForDescriptorArrayEnumCacheBridgeCache(); 78 79 // Provides access to Map::bit_field() byte. 80 static FieldAccess ForMapBitField(); 81 82 // Provides access to Map::bit_field3() field. 83 static FieldAccess ForMapBitField3(); 84 85 // Provides access to Map::descriptors() field. 86 static FieldAccess ForMapDescriptors(); 87 88 // Provides access to Map::instance_type() field. 89 static FieldAccess ForMapInstanceType(); 90 91 // Provides access to Map::prototype() field. 92 static FieldAccess ForMapPrototype(); 93 94 // Provides access to String::length() field. 95 static FieldAccess ForStringLength(); 96 97 // Provides access to JSGlobalObject::global_proxy() field. 98 static FieldAccess ForJSGlobalObjectGlobalProxy(); 99 100 // Provides access to JSGlobalObject::native_context() field. 101 static FieldAccess ForJSGlobalObjectNativeContext(); 102 103 // Provides access to JSValue::value() field. 104 static FieldAccess ForValue(); 105 106 // Provides access to arguments object fields. 107 static FieldAccess ForArgumentsLength(); 108 static FieldAccess ForArgumentsCallee(); 109 110 // Provides access to FixedArray slots. 111 static FieldAccess ForFixedArraySlot(size_t index); 112 113 // Provides access to Context slots. 114 static FieldAccess ForContextSlot(size_t index); 115 116 // Provides access to PropertyCell::value() field. 117 static FieldAccess ForPropertyCellValue(); 118 static FieldAccess ForPropertyCellValue(Type* type); 119 120 // Provides access to SharedFunctionInfo::feedback_vector() field. 121 static FieldAccess ForSharedFunctionInfoTypeFeedbackVector(); 122 123 // Provides access to FixedArray elements. 124 static ElementAccess ForFixedArrayElement(); 125 126 // Provides access to FixedDoubleArray elements. 127 static ElementAccess ForFixedDoubleArrayElement(); 128 129 // Provides access to Fixed{type}TypedArray and External{type}Array elements. 130 static ElementAccess ForTypedArrayElement(ExternalArrayType type, 131 bool is_external); 132 133 // =========================================================================== 134 // Access to global per-isolate variables (based on external reference). 135 136 // Provides access to the backing store of a StatsCounter. 137 static FieldAccess ForStatsCounter(); 138 139 private: 140 DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder); 141 }; 142 143 } // namespace compiler 144 } // namespace internal 145 } // namespace v8 146 147 #endif // V8_COMPILER_ACCESS_BUILDER_H_ 148