Inline functions to speedup GetElement

src/lookup.h

 // 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.
 
 #ifndef V8_LOOKUP_H_
 #define V8_LOOKUP_H_
 
 #include "src/factory.h"
 #include "src/isolate.h"
 #include "src/objects.h"
@@ skipping 185 matching lines @@
   bool is_dictionary_holder() const { return holder_map_->is_dictionary_map(); }
   Handle<Map> transition_map() const {
     DCHECK_EQ(TRANSITION, state_);
     return Handle<Map>::cast(transition_);
   }
   template <class T>
   Handle<T> GetHolder() const {
     DCHECK(IsFound());
     return Handle<T>::cast(holder_);
   }
-  static Handle<JSReceiver> GetRoot(Isolate* isolate, Handle<Object> receiver,
-                                    uint32_t index = kMaxUInt32);
+
   bool HolderIsReceiverOrHiddenPrototype() const;
 
   /* ACCESS_CHECK */
   bool HasAccess() const;
 
   /* PROPERTY */
   void PrepareForDataProperty(Handle<Object> value);
   void PrepareTransitionToDataProperty(Handle<Object> value,
                                        PropertyAttributes attributes,
                                        Object::StoreFromKeyed store_mode);
@@ skipping 20 matching lines @@
   bool IsReadOnly() const { return property_details().IsReadOnly(); }
   Representation representation() const {
     return property_details().representation();
   }
   FieldIndex GetFieldIndex() const;
   Handle<HeapType> GetFieldType() const;
   int GetAccessorIndex() const;
   int GetConstantIndex() const;
   Handle<PropertyCell> GetPropertyCell() const;
   Handle<Object> GetAccessors() const;
-  Handle<InterceptorInfo> GetInterceptor() const;
+  inline Handle<InterceptorInfo> GetInterceptor() const {
+    DCHECK_EQ(INTERCEPTOR, state_);
+    return handle(GetInterceptor(JSObject::cast(*holder_)), isolate_);
+  }
   Handle<Object> GetDataValue() const;
   void WriteDataValue(Handle<Object> value);
   void InternalizeName();
   void ReloadHolderMap();
 
  private:
   enum class InterceptorState {
     kUninitialized,
     kSkipNonMasking,
     kProcessNonMasking
   };
 
   Handle<Map> GetReceiverMap() const;
 
   MUST_USE_RESULT inline JSReceiver* NextHolder(Map* map);
   inline State LookupInHolder(Map* map, JSReceiver* holder);
   void RestartLookupForNonMaskingInterceptors() {
     RestartInternal(InterceptorState::kProcessNonMasking);
   }
   void RestartInternal(InterceptorState interceptor_state);
   State LookupNonMaskingInterceptorInHolder(Map* map, JSReceiver* holder);
   Handle<Object> FetchValue() const;
   void ReloadPropertyInformation();
-  bool SkipInterceptor(JSObject* holder);
+  inline bool SkipInterceptor(JSObject* holder);
   bool HasInterceptor(Map* map) const;
   bool InternalHolderIsReceiverOrHiddenPrototype() const;
-  InterceptorInfo* GetInterceptor(JSObject* holder) const;
+  inline InterceptorInfo* GetInterceptor(JSObject* holder) const {
+    if (IsElement()) return holder->GetIndexedInterceptor();
+    return holder->GetNamedInterceptor();
+  }
 
   bool check_hidden() const { return (configuration_ & kHidden) != 0; }
   bool check_interceptor() const {
     return (configuration_ & kInterceptor) != 0;
   }
   bool check_prototype_chain() const {
     return (configuration_ & kPrototypeChain) != 0;
   }
   int descriptor_number() const {
     DCHECK(has_property_);
     DCHECK(!holder_map_->is_dictionary_map());
     return number_;
   }
   int dictionary_entry() const {
     DCHECK(has_property_);
     DCHECK(holder_map_->is_dictionary_map());
     return number_;
   }
 
   static Configuration ComputeConfiguration(
       Configuration configuration, Handle<Name> name) {
     if (name->IsPrivate()) {
       return static_cast<Configuration>(configuration &
                                         HIDDEN_SKIP_INTERCEPTOR);
     } else {
       return configuration;
     }
   }
 
+  static Handle<JSReceiver> GetRootForNonJSReceiver(
+      Isolate* isolate, Handle<Object> receiver, uint32_t index = kMaxUInt32);
+  inline static Handle<JSReceiver> GetRoot(Isolate* isolate,
+                                           Handle<Object> receiver,
+                                           uint32_t index = kMaxUInt32) {
+    if (receiver->IsJSReceiver()) return Handle<JSReceiver>::cast(receiver);
+    return GetRootForNonJSReceiver(isolate, receiver, index);
+  }
+
   enum class ExoticIndexState { kUninitialized, kNotExotic, kExotic };
-  bool IsIntegerIndexedExotic(JSReceiver* holder);
+  inline bool IsIntegerIndexedExotic(JSReceiver* holder);
 
   // If configuration_ becomes mutable, update
   // HolderIsReceiverOrHiddenPrototype.
   const Configuration configuration_;
   State state_;
   bool has_property_;
   ExoticIndexState exotic_index_state_;
   InterceptorState interceptor_state_;
   PropertyDetails property_details_;
   Isolate* const isolate_;
   Handle<Name> name_;
   uint32_t index_;
   Handle<Object> transition_;
   const Handle<Object> receiver_;
   Handle<JSReceiver> holder_;
   Handle<Map> holder_map_;
   const Handle<JSReceiver> initial_holder_;
   uint32_t number_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_LOOKUP_H_