[turbofan] First step of Operator refactoring.

src/compiler/access-builder.cc

+// 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.
+
+#include "src/compiler/access-builder.h"
+#include "src/types-inl.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// static
+FieldAccess AccessBuilder::ForMap() {
+  return {kTaggedBase, HeapObject::kMapOffset, Handle<Name>(), Type::Any(),
+          kMachAnyTagged};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForJSObjectProperties() {
+  return {kTaggedBase, JSObject::kPropertiesOffset, Handle<Name>(), Type::Any(),
+          kMachAnyTagged};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForJSObjectElements() {
+  return {kTaggedBase, JSObject::kElementsOffset, Handle<Name>(),
+          Type::Internal(), kMachAnyTagged};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForJSArrayBufferBackingStore() {
+  return {kTaggedBase, JSArrayBuffer::kBackingStoreOffset, Handle<Name>(),
+          Type::UntaggedPtr(), kMachPtr};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForExternalArrayPointer() {
+  return {kTaggedBase, ExternalArray::kExternalPointerOffset, Handle<Name>(),
+          Type::UntaggedPtr(), kMachPtr};
+}
+
+
+// static
+ElementAccess AccessBuilder::ForFixedArrayElement() {
+  return {kTaggedBase, FixedArray::kHeaderSize, Type::Any(), kMachAnyTagged};
+}
+
+
+// static
+ElementAccess AccessBuilder::ForBackingStoreElement(MachineType rep) {
+  return {kUntaggedBase, kNonHeapObjectHeaderSize - kHeapObjectTag, Type::Any(),
+          rep};
+}
+
+
+// static
+ElementAccess AccessBuilder::ForTypedArrayElement(ExternalArrayType type,
+                                                  bool is_external) {
+  BaseTaggedness taggedness = is_external ? kUntaggedBase : kTaggedBase;
+  int header_size = is_external ? 0 : FixedTypedArrayBase::kDataOffset;
+  switch (type) {
+    case kExternalInt8Array:
+      return {taggedness, header_size, Type::Signed32(), kMachInt8};
+    case kExternalUint8Array:
+    case kExternalUint8ClampedArray:
+      return {taggedness, header_size, Type::Unsigned32(), kMachUint8};
+    case kExternalInt16Array:
+      return {taggedness, header_size, Type::Signed32(), kMachInt16};
+    case kExternalUint16Array:
+      return {taggedness, header_size, Type::Unsigned32(), kMachUint16};
+    case kExternalInt32Array:
+      return {taggedness, header_size, Type::Signed32(), kMachInt32};
+    case kExternalUint32Array:
+      return {taggedness, header_size, Type::Unsigned32(), kMachUint32};
+    case kExternalFloat32Array:
+      return {taggedness, header_size, Type::Number(), kRepFloat32};
+    case kExternalFloat64Array:
+      return {taggedness, header_size, Type::Number(), kRepFloat64};
+  }
+  UNREACHABLE();
+  return {kUntaggedBase, 0, Type::None(), kMachNone};
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8