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 server as 16 // parameters to simplified load/store operators. 17 class AccessBuilder FINAL : public AllStatic { 18 public: 19 // Provides access to HeapObject::map() field. 20 static FieldAccess ForMap(); 21 22 // Provides access to JSObject::properties() field. 23 static FieldAccess ForJSObjectProperties(); 24 25 // Provides access to JSObject::elements() field. 26 static FieldAccess ForJSObjectElements(); 27 28 // Provides access to JSFunction::context() field. 29 static FieldAccess ForJSFunctionContext(); 30 31 // Provides access to JSArrayBuffer::backing_store() field. 32 static FieldAccess ForJSArrayBufferBackingStore(); 33 34 // Provides access to ExternalArray::external_pointer() field. 35 static FieldAccess ForExternalArrayPointer(); 36 37 // Provides access to FixedArray elements. 38 static ElementAccess ForFixedArrayElement(); 39 40 // TODO(mstarzinger): Raw access only for testing, drop me. 41 static ElementAccess ForBackingStoreElement(MachineType rep); 42 43 // Provides access to Fixed{type}TypedArray and External{type}Array elements. 44 static ElementAccess ForTypedArrayElement(ExternalArrayType type, 45 bool is_external); 46 47 private: 48 DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder); 49 }; 50 51 } // namespace compiler 52 } // namespace internal 53 } // namespace v8 54 55 #endif // V8_COMPILER_ACCESS_BUILDER_H_ 56
