[LoadIC] Use LoadIC_Uninitialized for 0->PRE transitions

src/builtins/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_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/globals.h"
 
@@ skipping 230 matching lines @@
   TFS(KeyedStoreIC_Slow, HANDLER, Code::STORE_IC, StoreWithVector, 1)          \
   TFS(LoadGlobalIC_Miss, BUILTIN, kNoExtraICState, LoadGlobalWithVector, 1)    \
   TFS(LoadGlobalIC_Slow, HANDLER, Code::LOAD_GLOBAL_IC, LoadGlobalWithVector,  \
       1)                                                                       \
   TFS(LoadField, BUILTIN, kNoExtraICState, LoadField, 1)                       \
   TFS(LoadIC_FunctionPrototype, HANDLER, Code::LOAD_IC, LoadWithVector, 1)     \
   ASH(LoadIC_Getter_ForDeopt, BUILTIN, kNoExtraICState)                        \
   TFS(LoadIC_Miss, BUILTIN, kNoExtraICState, LoadWithVector, 1)                \
   TFS(LoadIC_Normal, HANDLER, Code::LOAD_IC, LoadWithVector, 1)                \
   TFS(LoadIC_Slow, HANDLER, Code::LOAD_IC, LoadWithVector, 1)                  \
+  TFS(LoadIC_Uninitialized, BUILTIN, kNoExtraICState, LoadWithVector, 1)       \
   TFS(StoreIC_Miss, BUILTIN, kNoExtraICState, StoreWithVector, 1)              \
   TFS(StoreIC_Normal, HANDLER, Code::STORE_IC, StoreWithVector, 1)             \
   ASH(StoreIC_Setter_ForDeopt, BUILTIN, kNoExtraICState)                       \
                                                                                \
   /* Built-in functions for Javascript */                                      \
   /* Special internal builtins */                                              \
   CPP(EmptyFunction)                                                           \
   CPP(Illegal)                                                                 \
   CPP(RestrictedFunctionPropertiesThrower)                                     \
   CPP(RestrictedStrictArgumentsPropertiesThrower)                              \
@@ skipping 733 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_