Vector-based KeyedLoadIC MISS logic needs improvement.

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"
 
@@ skipping 131 matching lines @@
   // Get the shared function info of the caller.
   SharedFunctionInfo* GetSharedFunctionInfo() const;
   // Get the code object of the caller.
   Code* GetCode() const;
   // Get the original (non-breakpointed) code object of the caller.
   Code* GetOriginalCode() const;
 
   // Set the call-site target.
   inline void set_target(Code* code);
   bool is_target_set() { return target_set_; }
+  bool is_vector_set() { return vector_set_; }
 
   bool UseVector() const {
     bool use = ICUseVector(kind());
     // If we are supposed to use the nexus, verify the nexus is non-null.
     DCHECK(!use || nexus_ != NULL);
     return use;
   }
 
   // Configure for most states.
   void ConfigureVectorState(IC::State new_state);
@@ skipping 133 matching lines @@
 
   Isolate* isolate_;
 
   // The constant pool of the code which originally called the IC (which might
   // be for the breakpointed copy of the original code).
   Handle<ConstantPoolArray> raw_constant_pool_;
 
   // The original code target that missed.
   Handle<Code> target_;
   bool target_set_;
+  bool vector_set_;
   State old_state_;  // For saving if we marked as prototype failure.
   State state_;
   Code::Kind kind_;
   Handle<HeapType> receiver_type_;
   MaybeHandle<Code> maybe_handler_;
 
   ExtraICState extra_ic_state_;
   MapHandleList target_maps_;
   bool target_maps_set_;
 
@@ skipping 451 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_