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.
5 #include "src/compiler/access-builder.h"
6 #include "src/types-inl.h"
13 FieldAccess AccessBuilder::ForMap() {
14 return {kTaggedBase, HeapObject::kMapOffset, MaybeHandle<Name>(), Type::Any(),
20 FieldAccess AccessBuilder::ForJSObjectProperties() {
21 return {kTaggedBase, JSObject::kPropertiesOffset, MaybeHandle<Name>(),
22 Type::Any(), kMachAnyTagged};
27 FieldAccess AccessBuilder::ForJSObjectElements() {
28 return {kTaggedBase, JSObject::kElementsOffset, MaybeHandle<Name>(),
29 Type::Internal(), kMachAnyTagged};
34 FieldAccess AccessBuilder::ForJSFunctionContext() {
35 return {kTaggedBase, JSFunction::kContextOffset, MaybeHandle<Name>(),
36 Type::Internal(), kMachAnyTagged};
41 FieldAccess AccessBuilder::ForJSArrayBufferBackingStore() {
42 return {kTaggedBase, JSArrayBuffer::kBackingStoreOffset, MaybeHandle<Name>(),
43 Type::UntaggedPointer(), kMachPtr};
48 FieldAccess AccessBuilder::ForExternalArrayPointer() {
49 return {kTaggedBase, ExternalArray::kExternalPointerOffset,
50 MaybeHandle<Name>(), Type::UntaggedPointer(), kMachPtr};
55 FieldAccess AccessBuilder::ForMapInstanceType() {
56 return {kTaggedBase, Map::kInstanceTypeOffset, Handle<Name>(),
57 Type::UntaggedUnsigned8(), kMachUint8};
62 FieldAccess AccessBuilder::ForStringLength() {
63 return {kTaggedBase, String::kLengthOffset, Handle<Name>(),
64 Type::SignedSmall(), kMachAnyTagged};
69 FieldAccess AccessBuilder::ForValue() {
70 return {kTaggedBase, JSValue::kValueOffset, Handle<Name>(), Type::Any(),
76 FieldAccess AccessBuilder::ForContextSlot(size_t index) {
77 int offset = Context::kHeaderSize + static_cast<int>(index) * kPointerSize;
79 Context::SlotOffset(static_cast<int>(index)) + kHeapObjectTag);
80 return {kTaggedBase, offset, Handle<Name>(), Type::Any(), kMachAnyTagged};
85 ElementAccess AccessBuilder::ForFixedArrayElement() {
86 return {kTaggedBase, FixedArray::kHeaderSize, Type::Any(), kMachAnyTagged};
91 ElementAccess AccessBuilder::ForTypedArrayElement(ExternalArrayType type,
93 BaseTaggedness taggedness = is_external ? kUntaggedBase : kTaggedBase;
94 int header_size = is_external ? 0 : FixedTypedArrayBase::kDataOffset;
96 case kExternalInt8Array:
97 return {taggedness, header_size, Type::Signed32(), kMachInt8};
98 case kExternalUint8Array:
99 case kExternalUint8ClampedArray:
100 return {taggedness, header_size, Type::Unsigned32(), kMachUint8};
101 case kExternalInt16Array:
102 return {taggedness, header_size, Type::Signed32(), kMachInt16};
103 case kExternalUint16Array:
104 return {taggedness, header_size, Type::Unsigned32(), kMachUint16};
105 case kExternalInt32Array:
106 return {taggedness, header_size, Type::Signed32(), kMachInt32};
107 case kExternalUint32Array:
108 return {taggedness, header_size, Type::Unsigned32(), kMachUint32};
109 case kExternalFloat32Array:
110 return {taggedness, header_size, Type::Number(), kMachFloat32};
111 case kExternalFloat64Array:
112 return {taggedness, header_size, Type::Number(), kMachFloat64};
115 return {kUntaggedBase, 0, Type::None(), kMachNone};
118 } // namespace compiler
119 } // namespace internal