Use existing global cell status as a hint when generating loads.

src/v8-counters.h

 // Copyright 2007-2008 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 143 matching lines @@
   SC(keyed_load_constant_function, V8.KeyedLoadConstantFunction)      \
   SC(keyed_load_field, V8.KeyedLoadField)                             \
   SC(keyed_load_callback, V8.KeyedLoadCallback)                       \
   SC(keyed_load_interceptor, V8.KeyedLoadInterceptor)                 \
   SC(keyed_load_inline, V8.KeyedLoadInline)                           \
   SC(keyed_load_inline_miss, V8.KeyedLoadInlineMiss)                  \
   SC(named_load_inline, V8.NamedLoadInline)                           \
   SC(named_load_inline_miss, V8.NamedLoadInlineMiss)                  \
   SC(named_load_global_inline, V8.NamedLoadGlobalInline)              \
   SC(named_load_global_inline_miss, V8.NamedLoadGlobalInlineMiss)     \
+  SC(dont_delete_hint_hit, V8.DontDeleteHintHit)                      \
+  SC(dont_delete_hint_miss, V8.DontDeleteHintMiss)                    \
   SC(named_load_global_stub, V8.NamedLoadGlobalStub)                  \
   SC(named_load_global_stub_miss, V8.NamedLoadGlobalStubMiss)         \
   SC(keyed_store_field, V8.KeyedStoreField)                           \
   SC(keyed_store_inline, V8.KeyedStoreInline)                         \
   SC(keyed_store_inline_miss, V8.KeyedStoreInlineMiss)                \
   SC(named_store_global_inline, V8.NamedStoreGlobalInline)            \
   SC(named_store_global_inline_miss, V8.NamedStoreGlobalInlineMiss)   \
   SC(store_normal_miss, V8.StoreNormalMiss)                           \
   SC(store_normal_hit, V8.StoreNormalHit)                             \
   SC(cow_arrays_created_stub, V8.COWArraysCreatedStub)                \
@@ skipping 86 matching lines @@
     stats_counter_count
   };
 
   // Sliding state window counters.
   static StatsCounter state_counters[];
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_COUNTERS_H_