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#include "src/compiler/access-builder.h"
6#include "src/types-inl.h"
7
8namespace v8 {
9namespace internal {
10namespace compiler {
11
12// static
13FieldAccess AccessBuilder::ForMap() {
14  return {kTaggedBase, HeapObject::kMapOffset, Handle<Name>(), Type::Any(),
15          kMachAnyTagged};
16}
17
18
19// static
20FieldAccess AccessBuilder::ForJSObjectProperties() {
21  return {kTaggedBase, JSObject::kPropertiesOffset, Handle<Name>(), Type::Any(),
22          kMachAnyTagged};
23}
24
25
26// static
27FieldAccess AccessBuilder::ForJSObjectElements() {
28  return {kTaggedBase, JSObject::kElementsOffset, Handle<Name>(),
29          Type::Internal(), kMachAnyTagged};
30}
31
32
33// static
34FieldAccess AccessBuilder::ForJSFunctionContext() {
35  return {kTaggedBase, JSFunction::kContextOffset, Handle<Name>(),
36          Type::Internal(), kMachAnyTagged};
37}
38
39
40// static
41FieldAccess AccessBuilder::ForJSArrayBufferBackingStore() {
42  return {kTaggedBase, JSArrayBuffer::kBackingStoreOffset, Handle<Name>(),
43          Type::UntaggedPtr(), kMachPtr};
44}
45
46
47// static
48FieldAccess AccessBuilder::ForExternalArrayPointer() {
49  return {kTaggedBase, ExternalArray::kExternalPointerOffset, Handle<Name>(),
50          Type::UntaggedPtr(), kMachPtr};
51}
52
53
54// static
55ElementAccess AccessBuilder::ForFixedArrayElement() {
56  return {kTaggedBase, FixedArray::kHeaderSize, Type::Any(), kMachAnyTagged};
57}
58
59
60// static
61ElementAccess AccessBuilder::ForBackingStoreElement(MachineType rep) {
62  return {kUntaggedBase, kNonHeapObjectHeaderSize - kHeapObjectTag, Type::Any(),
63          rep};
64}
65
66
67// static
68ElementAccess AccessBuilder::ForTypedArrayElement(ExternalArrayType type,
69                                                  bool is_external) {
70  BaseTaggedness taggedness = is_external ? kUntaggedBase : kTaggedBase;
71  int header_size = is_external ? 0 : FixedTypedArrayBase::kDataOffset;
72  switch (type) {
73    case kExternalInt8Array:
74      return {taggedness, header_size, Type::Signed32(), kMachInt8};
75    case kExternalUint8Array:
76    case kExternalUint8ClampedArray:
77      return {taggedness, header_size, Type::Unsigned32(), kMachUint8};
78    case kExternalInt16Array:
79      return {taggedness, header_size, Type::Signed32(), kMachInt16};
80    case kExternalUint16Array:
81      return {taggedness, header_size, Type::Unsigned32(), kMachUint16};
82    case kExternalInt32Array:
83      return {taggedness, header_size, Type::Signed32(), kMachInt32};
84    case kExternalUint32Array:
85      return {taggedness, header_size, Type::Unsigned32(), kMachUint32};
86    case kExternalFloat32Array:
87      return {taggedness, header_size, Type::Number(), kRepFloat32};
88    case kExternalFloat64Array:
89      return {taggedness, header_size, Type::Number(), kRepFloat64};
90  }
91  UNREACHABLE();
92  return {kUntaggedBase, 0, Type::None(), kMachNone};
93}
94
95}  // namespace compiler
96}  // namespace internal
97}  // namespace v8
98