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 server as 16// parameters to simplified load/store operators. 17class 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