[ic] Use UnseededNumberDictionary as a storage for names in TypeFeedbackMetadata.

src/objects.cc

 // Copyright 2015 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 "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 16171 matching lines @@
   int capacity = (capacity_option == USE_CUSTOM_MINIMUM_CAPACITY)
                      ? at_least_space_for
                      : ComputeCapacity(at_least_space_for);
   if (capacity > HashTable::kMaxCapacity) {
     v8::internal::Heap::FatalProcessOutOfMemory("invalid table size", true);
   }
 
   Factory* factory = isolate->factory();
   int length = EntryToIndex(capacity);
   Handle<FixedArray> array = factory->NewFixedArray(length, pretenure);
-  array->set_map_no_write_barrier(*factory->hash_table_map());
+  array->set_map_no_write_barrier(Shape::GetMap(isolate));
   Handle<Derived> table = Handle<Derived>::cast(array);
 
   table->SetNumberOfElements(0);
   table->SetNumberOfDeletedElements(0);
   table->SetCapacity(capacity);
   return table;
 }
 
 
 // Find entry for key otherwise return kNotFound.
@@ skipping 2796 matching lines @@
 
   Object* data_obj =
       constructor->shared()->get_api_func_data()->access_check_info();
   if (data_obj->IsUndefined(isolate)) return nullptr;
 
   return AccessCheckInfo::cast(data_obj);
 }
 
 }  // namespace internal
 }  // namespace v8