Use type info for count operation in Crankshaft.

src/type-info.h

 // Copyright 2011 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 213 matching lines @@
   STRING_INDEX_OUT_OF_BOUNDS = 1
 };
 
 
 // Forward declarations.
 class Assignment;
 class UnaryOperation;
 class BinaryOperation;
 class Call;
 class CompareOperation;
+class CountOperation;
 class CompilationInfo;
 class Property;
 class CaseClause;
 
 class TypeFeedbackOracle BASE_EMBEDDED {
  public:
   TypeFeedbackOracle(Handle<Code> code, Handle<Context> global_context);
 
   bool LoadIsMonomorphic(Property* expr);
   bool StoreIsMonomorphic(Expression* expr);
@@ skipping 12 matching lines @@
   CheckType GetCallCheckType(Call* expr);
   Handle<JSObject> GetPrototypeForPrimitiveCheck(CheckType check);
 
   bool LoadIsBuiltin(Property* expr, Builtins::Name id);
 
   // Get type information for arithmetic operations and compares.
   TypeInfo UnaryType(UnaryOperation* expr);
   TypeInfo BinaryType(BinaryOperation* expr);
   TypeInfo CompareType(CompareOperation* expr);
   TypeInfo SwitchType(CaseClause* clause);
+  TypeInfo IncrementType(CountOperation* expr);
 
  private:
   ZoneMapList* CollectReceiverTypes(unsigned ast_id,
                                     Handle<String> name,
                                     Code::Flags flags);
 
   void SetInfo(unsigned ast_id, Object* target);
 
   void PopulateMap(Handle<Code> code);
 
   void CollectIds(Code* code,
                   List<int>* code_positions,
                   List<unsigned>* ast_ids);
 
   // Returns an element from the backing store. Returns undefined if
   // there is no information.
   Handle<Object> GetInfo(unsigned ast_id);
 
   Handle<Context> global_context_;
   Handle<NumberDictionary> dictionary_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_