Move template instance check from Object to FunctionTemplateInfo::IsTemplateFor

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 132 matching lines @@
       HeapObject::cast(this)->map() ==
       HeapObject::cast(this)->GetHeap()->external_map();
 }
 
 
 bool Object::IsAccessorInfo() {
   return IsExecutableAccessorInfo() || IsDeclaredAccessorInfo();
 }
 
 
-bool Object::IsInstanceOf(FunctionTemplateInfo* expected) {
-  // There is a constraint on the object; check.
-  if (!this->IsJSObject()) return false;
-  // Fetch the constructor function of the object.
-  Object* cons_obj = JSObject::cast(this)->map()->constructor();
-  if (!cons_obj->IsJSFunction()) return false;
-  JSFunction* fun = JSFunction::cast(cons_obj);
-  // Iterate through the chain of inheriting function templates to
-  // see if the required one occurs.
-  for (Object* type = fun->shared()->function_data();
-       type->IsFunctionTemplateInfo();
-       type = FunctionTemplateInfo::cast(type)->parent_template()) {
-    if (type == expected) return true;
-  }
-  // Didn't find the required type in the inheritance chain.
-  return false;
-}
-
-
 bool Object::IsSmi() {
   return HAS_SMI_TAG(this);
 }
 
 
 bool Object::IsHeapObject() {
   return Internals::HasHeapObjectTag(this);
 }
 
 
@@ skipping 5768 matching lines @@
 
 
 void AccessorInfo::set_property_attributes(PropertyAttributes attributes) {
   set_flag(Smi::FromInt(AttributesField::update(flag()->value(), attributes)));
 }
 
 
 bool AccessorInfo::IsCompatibleReceiver(Object* receiver) {
   Object* function_template = expected_receiver_type();
   if (!function_template->IsFunctionTemplateInfo()) return true;
-  return receiver->IsInstanceOf(FunctionTemplateInfo::cast(function_template));
+  return FunctionTemplateInfo::cast(function_template)->IsTemplateFor(receiver);
 }
 
 
 void AccessorPair::set_access_flags(v8::AccessControl access_control) {
   int current = access_flags()->value();
   current = BooleanBit::set(current,
                             kProhibitsOverwritingBit,
                             access_control & PROHIBITS_OVERWRITING);
   current = BooleanBit::set(current,
                             kAllCanReadBit,
@@ skipping 459 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_