Fix overlapping KeyedLoadIC bitfield.

src/ic/ic.h

 // Copyright 2012 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_IC_H_
 #define V8_IC_H_
 
 #include "src/ic/ic-state.h"
 #include "src/macro-assembler.h"
 #include "src/messages.h"
@@ skipping 426 matching lines @@
   static void Clear(Isolate* isolate, Address address, Code* target,
                     Address constant_pool);
 
   friend class IC;
 };
 
 
 class KeyedLoadIC : public LoadIC {
  public:
   // ExtraICState bits (building on IC)
-  class IcCheckTypeField : public BitField<IcCheckType, 2, 1> {};
+  class IcCheckTypeField
+      : public BitField<IcCheckType, LoadICState::kNextBitFieldOffset, 1> {};
 
   static ExtraICState ComputeExtraICState(ContextualMode contextual_mode,
                                           LanguageMode language_mode,
                                           IcCheckType key_type) {
     return LoadICState(contextual_mode, language_mode).GetExtraICState() |
            IcCheckTypeField::encode(key_type);
   }
 
   static IcCheckType GetKeyType(ExtraICState extra_state) {
     return IcCheckTypeField::decode(extra_state);
@@ skipping 289 matching lines @@
 
 // Support functions for interceptor handlers.
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptorOnly);
 DECLARE_RUNTIME_FUNCTION(LoadPropertyWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(LoadElementWithInterceptor);
 DECLARE_RUNTIME_FUNCTION(StorePropertyWithInterceptor);
 }
 }  // namespace v8::internal
 
 #endif  // V8_IC_H_