Use a dictionary-mode code cache on the map rather than a dual system.

src/builtins.h

 // Copyright 2011 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.
 
 #ifndef V8_BUILTINS_H_
 #define V8_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 228 matching lines @@
   V(LoadIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                      \
   V(KeyedLoadIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                 \
   V(StoreIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                     \
   V(KeyedStoreIC_Miss, BUILTIN, UNINITIALIZED, kNoExtraICState)                \
   V(LoadIC_Getter_ForDeopt, LOAD_IC, MONOMORPHIC, kNoExtraICState)             \
   V(KeyedLoadIC_Megamorphic, KEYED_LOAD_IC, MEGAMORPHIC, kNoExtraICState)      \
                                                                                \
   V(StoreIC_Setter_ForDeopt, STORE_IC, MONOMORPHIC,                            \
     StoreICState::kStrictModeState)                                            \
                                                                                \
-  V(KeyedStoreIC_Initialize, KEYED_STORE_IC, UNINITIALIZED, kNoExtraICState)   \

[mvstanton, 2016/04/05 13:10:43]

Thanks for getting rid of these guys! :)

-  V(KeyedStoreIC_PreMonomorphic, KEYED_STORE_IC, PREMONOMORPHIC,               \
-    kNoExtraICState)                                                           \
   V(KeyedStoreIC_Megamorphic, KEYED_STORE_IC, MEGAMORPHIC, kNoExtraICState)    \
                                                                                \
-  V(KeyedStoreIC_Initialize_Strict, KEYED_STORE_IC, UNINITIALIZED,             \
-    StoreICState::kStrictModeState)                                            \
-  V(KeyedStoreIC_PreMonomorphic_Strict, KEYED_STORE_IC, PREMONOMORPHIC,        \
-    StoreICState::kStrictModeState)                                            \
   V(KeyedStoreIC_Megamorphic_Strict, KEYED_STORE_IC, MEGAMORPHIC,              \
     StoreICState::kStrictModeState)                                            \
                                                                                \
   V(DatePrototypeGetDate, BUILTIN, UNINITIALIZED, kNoExtraICState)             \
   V(DatePrototypeGetDay, BUILTIN, UNINITIALIZED, kNoExtraICState)              \
   V(DatePrototypeGetFullYear, BUILTIN, UNINITIALIZED, kNoExtraICState)         \
   V(DatePrototypeGetHours, BUILTIN, UNINITIALIZED, kNoExtraICState)            \
   V(DatePrototypeGetMilliseconds, BUILTIN, UNINITIALIZED, kNoExtraICState)     \
   V(DatePrototypeGetMinutes, BUILTIN, UNINITIALIZED, kNoExtraICState)          \
   V(DatePrototypeGetMonth, BUILTIN, UNINITIALIZED, kNoExtraICState)            \
@@ skipping 389 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_