Optimized calling of C++ builtins (and HandleApiCall

src/factory.cc

 // Copyright 2006-2008 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 748 matching lines @@
 
 Handle<JSObject> Factory::NewArgumentsObject(Handle<Object> callee,
                                              int length) {
   CALL_HEAP_FUNCTION(Heap::AllocateArgumentsObject(*callee, length), JSObject);
 }
 
 
 Handle<JSFunction> Factory::CreateApiFunction(
     Handle<FunctionTemplateInfo> obj, ApiInstanceType instance_type) {
   Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::HandleApiCall));
+  Handle<Code> construct_stub =
+      Handle<Code>(Builtins::builtin(Builtins::JSConstructStubApi));
 
   int internal_field_count = 0;
   if (!obj->instance_template()->IsUndefined()) {
     Handle<ObjectTemplateInfo> instance_template =
         Handle<ObjectTemplateInfo>(
             ObjectTemplateInfo::cast(obj->instance_template()));
     internal_field_count =
         Smi::cast(instance_template->internal_field_count())->value();
   }
 
@@ skipping 54 matching lines @@
   if (!obj->indexed_property_handler()->IsUndefined()) {
     map->set_has_indexed_interceptor();
   }
 
   // Set instance call-as-function information in the map.
   if (!obj->instance_call_handler()->IsUndefined()) {
     map->set_has_instance_call_handler();
   }
 
   result->shared()->set_function_data(*obj);
+  result->shared()->set_construct_stub(*construct_stub);
   result->shared()->DontAdaptArguments();
 
   // Recursively copy parent templates' accessors, 'data' may be modified.
   Handle<DescriptorArray> array =
       Handle<DescriptorArray>(map->instance_descriptors());
   while (true) {
     Handle<Object> props = Handle<Object>(obj->property_accessors());
     if (!props->IsUndefined()) {
       array = Factory::CopyAppendCallbackDescriptors(array, props);
     }
@@ skipping 95 matching lines @@
     Execution::ConfigureInstance(instance,
                                  instance_template,
                                  pending_exception);
   } else {
     *pending_exception = false;
   }
 }
 
 
 } }  // namespace v8::internal