[turbofan] First steps towards optimizing for-in loops.

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 {
@@ skipping 41 matching lines @@
 
 
 // static
 FieldAccess AccessBuilder::ForExternalArrayPointer() {
   return {kTaggedBase, ExternalArray::kExternalPointerOffset,
           MaybeHandle<Name>(), Type::UntaggedPointer(), kMachPtr};
 }
 
 
 // static
+FieldAccess AccessBuilder::ForDescriptorArrayEnumCache() {
+  return {kTaggedBase, DescriptorArray::kEnumCacheOffset, Handle<Name>(),
+          Type::TaggedPointer(), kMachAnyTagged};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForDescriptorArrayEnumCacheBridgeCache() {
+  return {kTaggedBase, DescriptorArray::kEnumCacheBridgeCacheOffset,
+          Handle<Name>(), Type::TaggedPointer(), kMachAnyTagged};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForMapBitField3() {
+  return {kTaggedBase, Map::kBitField3Offset, Handle<Name>(),
+          Type::UntaggedUnsigned32(), kMachUint32};
+}
+
+
+// static
+FieldAccess AccessBuilder::ForMapDescriptors() {
+  return {kTaggedBase, Map::kDescriptorsOffset, Handle<Name>(),
+          Type::TaggedPointer(), kMachAnyTagged};
+}
+
+
+// static
 FieldAccess AccessBuilder::ForMapInstanceType() {
   return {kTaggedBase, Map::kInstanceTypeOffset, Handle<Name>(),
           Type::UntaggedUnsigned8(), kMachUint8};
 }
 
 
 // static
 FieldAccess AccessBuilder::ForStringLength(Zone* zone) {
   return {kTaggedBase, String::kLengthOffset, Handle<Name>(),
           Type::Range(0, String::kMaxLength, zone), kMachAnyTagged};
@@ skipping 88 matching lines @@
 
 // static
 FieldAccess AccessBuilder::ForSharedFunctionInfoTypeFeedbackVector() {
   return {kTaggedBase, SharedFunctionInfo::kFeedbackVectorOffset,
           Handle<Name>(), Type::Any(), kMachAnyTagged};
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8