Partial recover from performance degradation after handlification of ElementsAccessor::CopyElements…

src/factory.cc

 // 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.
 
 #include "factory.h"
 
 #include "isolate-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 1351 matching lines @@
           allocation_site.is_null() ? NULL : *allocation_site),
       JSObject);
 }
 
 
 Handle<JSArray> Factory::NewJSArray(ElementsKind elements_kind,
                                     int length,
                                     int capacity,
                                     ArrayStorageAllocationMode mode,
                                     PretenureFlag pretenure) {
-  if (capacity != 0) {
-    elements_kind = GetHoleyElementsKind(elements_kind);
-  }
   CALL_HEAP_FUNCTION(isolate(),
                      isolate()->heap()->AllocateJSArrayAndStorage(
                          elements_kind,
                          length,
                          capacity,
                          mode,
                          pretenure),
                      JSArray);
 }
 
@@ skipping 561 matching lines @@
   if (name->Equals(h->infinity_string())) return infinity_value();
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 } }  // namespace v8::internal