ElementsAccessor::SetLength() maybehandlified.

src/accessors.cc

 // 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 193 matching lines @@
 
   bool has_exception;
   Handle<Object> uint32_v =
       Execution::ToUint32(isolate, value, &has_exception);
   if (has_exception) return Failure::Exception();
   Handle<Object> number_v =
       Execution::ToNumber(isolate, value, &has_exception);
   if (has_exception) return Failure::Exception();
 
   if (uint32_v->Number() == number_v->Number()) {
-    Handle<Object> result = JSArray::SetElementsLength(array_handle, uint32_v);
-    RETURN_IF_EMPTY_HANDLE(isolate, result);
+    Handle<Object> result;
+    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+        isolate, result,
+        JSArray::SetElementsLength(array_handle, uint32_v));
     return *result;
   }
   return isolate->Throw(
       *isolate->factory()->NewRangeError("invalid_array_length",
                                          HandleVector<Object>(NULL, 0)));
 }
 
 
 const AccessorDescriptor Accessors::ArrayLength = {
   ArrayGetLength,
@@ skipping 741 matching lines @@
   info->set_data(Smi::FromInt(index));
   Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport);
   Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport);
   info->set_getter(*getter);
   if (!(attributes & ReadOnly)) info->set_setter(*setter);
   return info;
 }
 
 
 } }  // namespace v8::internal