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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_COMPILER_ACCESS_BUILDER_H_
#define V8_COMPILER_ACCESS_BUILDER_H_
#include "src/compiler/simplified-operator.h"
namespace v8 {
namespace internal {
namespace compiler {
// This access builder provides a set of static methods constructing commonly
// used FieldAccess and ElementAccess descriptors. These descriptors serve as
// parameters to simplified load/store operators.
class AccessBuilder final : public AllStatic {
public:
// ===========================================================================
// Access to heap object fields and elements (based on tagged pointer).
// Provides access to HeapObject::map() field.
static FieldAccess ForMap();
// Provides access to JSObject::properties() field.
static FieldAccess ForJSObjectProperties();
// Provides access to JSObject::elements() field.
static FieldAccess ForJSObjectElements();
// Provides access to JSFunction::context() field.
static FieldAccess ForJSFunctionContext();
// Provides access to JSFunction::shared() field.
static FieldAccess ForJSFunctionSharedFunctionInfo();
// Provides access to JSArrayBuffer::backing_store() field.
static FieldAccess ForJSArrayBufferBackingStore();
// Provides access to JSDate fields.
static FieldAccess ForJSDateField(JSDate::FieldIndex index);
// Provides access to FixedArray::length() field.
static FieldAccess ForFixedArrayLength();
// Provides access to DescriptorArray::enum_cache() field.
static FieldAccess ForDescriptorArrayEnumCache();
// Provides access to DescriptorArray::enum_cache_bridge_cache() field.
static FieldAccess ForDescriptorArrayEnumCacheBridgeCache();
// Provides access to Map::bit_field3() field.
static FieldAccess ForMapBitField3();
// Provides access to Map::descriptors() field.
static FieldAccess ForMapDescriptors();
// Provides access to Map::instance_type() field.
static FieldAccess ForMapInstanceType();
// Provides access to String::length() field.
static FieldAccess ForStringLength(Zone* zone);
// Provides access to JSValue::value() field.
static FieldAccess ForValue();
// Provides access Context slots.
static FieldAccess ForContextSlot(size_t index);
// Provides access to PropertyCell::value() field.
static FieldAccess ForPropertyCellValue();
// Provides access to SharedFunctionInfo::feedback_vector() field.
static FieldAccess ForSharedFunctionInfoTypeFeedbackVector();
// Provides access to FixedArray elements.
static ElementAccess ForFixedArrayElement();
// Provides access to Fixed{type}TypedArray and External{type}Array elements.
static ElementAccess ForTypedArrayElement(ExternalArrayType type,
bool is_external);
// Provides access to the characters of sequential strings.
static ElementAccess ForSeqStringChar(String::Encoding encoding);
// ===========================================================================
// Access to global per-isolate variables (based on external reference).
// Provides access to the backing store of a StatsCounter.
static FieldAccess ForStatsCounter();
// ===========================================================================
// Access to activation records on the stack (based on frame pointer).
// Provides access to the next frame pointer in a stack frame.
static FieldAccess ForFrameCallerFramePtr();
// Provides access to the marker in a stack frame.
static FieldAccess ForFrameMarker();
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(AccessBuilder);
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_ACCESS_BUILDER_H_
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