Introduce extended mode.

src/heap.cc

 // Copyright 2011 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 3362 matching lines @@
 }
 
 
 MaybeObject* Heap::AllocateArgumentsObject(Object* callee, int length) {
   // To get fast allocation and map sharing for arguments objects we
   // allocate them based on an arguments boilerplate.
 
   JSObject* boilerplate;
   int arguments_object_size;
   bool strict_mode_callee = callee->IsJSFunction() &&
-                            JSFunction::cast(callee)->shared()->strict_mode();
+      !JSFunction::cast(callee)->shared()->is_classic_mode();
   if (strict_mode_callee) {
     boilerplate =
         isolate()->context()->global_context()->
             strict_mode_arguments_boilerplate();
     arguments_object_size = kArgumentsObjectSizeStrict;
   } else {
     boilerplate =
         isolate()->context()->global_context()->arguments_boilerplate();
     arguments_object_size = kArgumentsObjectSize;
   }
@@ skipping 3062 matching lines @@
   isolate_->heap()->store_buffer()->Compact();
   isolate_->heap()->store_buffer()->Filter(MemoryChunk::ABOUT_TO_BE_FREED);
   for (chunk = chunks_queued_for_free_; chunk != NULL; chunk = next) {
     next = chunk->next_chunk();
     isolate_->memory_allocator()->Free(chunk);
   }
   chunks_queued_for_free_ = NULL;
 }
 
 } }  // namespace v8::internal