[ic] Load IC data handlers now support prototype chain checks with global and dictionary objects.

src/ic/handler-configuration.h

 // Copyright 2016 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_IC_HANDLER_CONFIGURATION_H_
 #define V8_IC_HANDLER_CONFIGURATION_H_
 
 #include "src/elements-kind.h"
 #include "src/field-index.h"
 #include "src/globals.h"
@@ skipping 41 matching lines @@
   //
   // Encoding when KindBits contains kForElements.
   //
   class IsJsArrayBits : public BitField<bool, KindBits::kNext, 1> {};
   class ConvertHoleBits : public BitField<bool, IsJsArrayBits::kNext, 1> {};
   class ElementsKindBits
       : public BitField<ElementsKind, ConvertHoleBits::kNext, 8> {};
   // Make sure we don't overflow the smi.
   STATIC_ASSERT(ElementsKindBits::kNext <= kSmiValueSize);
 
+  // The layout of an Tuple3 handler representing a load of a field from
+  // prototype when prototype chain checks do not include non-existing lookups
+  // or access checks.
+  static const int kHolderCellOffset = Tuple3::kValue1Offset;
+  static const int kSmiHandlerOffset = Tuple3::kValue2Offset;
+  static const int kValidityCellOffset = Tuple3::kValue3Offset;
+
+  // The layout of an array handler representing a load of a field from
+  // prototype when prototype chain checks include non-existing lookups and
+  // access checks.
+  static const int kSmiHandlerIndex = 0;
+  static const int kValidityCellIndex = 1;
+  static const int kHolderCellIndex = 2;
+  static const int kFirstPrototypeIndex = 3;
+
   // Creates a Smi-handler for loading a field from fast object.
   static inline Handle<Object> LoadField(Isolate* isolate,
                                          FieldIndex field_index);
 
   // Creates a Smi-handler for loading a constant from fast object.
   static inline Handle<Object> LoadConstant(Isolate* isolate, int descriptor);
 
   // Sets DoNegativeLookupOnReceiverBits in given Smi-handler. The receiver
   // check is a part of a prototype chain check.
   static inline Handle<Object> EnableNegativeLookupOnReceiver(
@@ skipping 34 matching lines @@
   // Creates a Smi-handler for storing a field to fast object.
   static inline Handle<Object> StoreField(Isolate* isolate, int descriptor,
                                           FieldIndex field_index,
                                           Representation representation);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_HANDLER_CONFIGURATION_H_