Handle array construction on native code

src/builtins.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 117 matching lines @@
   UNREACHABLE();
 }
 BUILTIN_END
 
 
 BUILTIN(EmptyFunction) {
 }
 BUILTIN_END
 
 
-BUILTIN(ArrayCode) {
+BUILTIN(ArrayCodeGeneric) {
+  Counters::array_function_runtime.Increment();
+
   JSArray* array;
   if (CalledAsConstructor()) {
     array = JSArray::cast(*receiver);
   } else {
     // Allocate the JS Array
     JSFunction* constructor =
         Top::context()->global_context()->array_function();
     Object* obj = Heap::AllocateJSObject(constructor);
     if (obj->IsFailure()) return obj;
     array = JSArray::cast(obj);
@@ skipping 10 matching lines @@
       if (len >= 0 && len < JSObject::kInitialMaxFastElementArray) {
         Object* obj = Heap::AllocateFixedArrayWithHoles(len);
         if (obj->IsFailure()) return obj;
         array->SetContent(FixedArray::cast(obj));
         return array;
       }
     }
     // Take the argument as the length.
     obj = array->Initialize(0);
     if (obj->IsFailure()) return obj;
-    if (args.length() == 2) return array->SetElementsLength(args[1]);
+    return array->SetElementsLength(args[1]);
   }
 
   // Optimize the case where there are no parameters passed.
   if (args.length() == 1) return array->Initialize(4);
 
   // Take the arguments as elements.
   int number_of_elements = args.length() - 1;
   Smi* len = Smi::FromInt(number_of_elements);
   Object* obj = Heap::AllocateFixedArrayWithHoles(len->value());
   if (obj->IsFailure()) return obj;
@@ skipping 571 matching lines @@
       if (entry->contains(pc)) {
         return names_[i];
       }
     }
   }
   return NULL;
 }
 
 
 } }  // namespace v8::internal