Normalized map copies should not share code caches

src/objects.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 5250 matching lines @@
   }
 
   Map* result;
   MaybeObject* maybe_result = RawCopy(new_instance_size);
   if (!maybe_result->To(&result)) return maybe_result;
 
   if (mode != CLEAR_INOBJECT_PROPERTIES) {
     result->set_inobject_properties(inobject_properties());
   }
 
-  result->set_code_cache(code_cache());
   result->set_is_shared(sharing == SHARED_NORMALIZED_MAP);
   result->set_dictionary_map(true);
 
 #ifdef VERIFY_HEAP
   if (FLAG_verify_heap && result->is_shared()) {
     result->SharedMapVerify();
   }
 #endif
 
   return result;
@@ skipping 8700 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal