Revert 10216 Optimize the equality check case of ICCompare stubs.

src/code-stubs.h

Index: src/code-stubs.h
===================================================================
--- src/code-stubs.h	(revision 10216)
+++ src/code-stubs.h	(working copy)
@@ -194,17 +194,6 @@
     return UNINITIALIZED;
   }
 
-  // Add the code to a specialized cache, specific to an individual
-  // stub type. Please note, this method must add the code object to a
-  // roots object, otherwise we will remove the code during GC.
-  virtual void AddToSpecialCache(Handle<Code> new_object) { }
-
-  // Find code in a specialized cache, work is delegated to the specific stub.
-  virtual bool FindCodeInSpecialCache(Code** code_out) { return false; }
-
-  // If a stub uses a special cache override this.
-  virtual bool UseSpecialCache() { return false; }
-
   // Returns a name for logging/debugging purposes.
   SmartArrayPointer<const char> GetName();
   virtual void PrintName(StringStream* stream);
@@ -476,8 +465,6 @@
 
   virtual void Generate(MacroAssembler* masm);
 
-  void set_known_map(Handle<Map> map) { known_map_ = map; }
-
  private:
   class OpField: public BitField<int, 0, 3> { };
   class StateField: public BitField<int, 3, 5> { };
@@ -497,18 +484,12 @@
   void GenerateStrings(MacroAssembler* masm);
   void GenerateObjects(MacroAssembler* masm);
   void GenerateMiss(MacroAssembler* masm);
-  void GenerateKnownObjects(MacroAssembler* masm);
 
   bool strict() const { return op_ == Token::EQ_STRICT; }
   Condition GetCondition() const { return CompareIC::ComputeCondition(op_); }
 
-  virtual void AddToSpecialCache(Handle<Code> new_object);
-  virtual bool FindCodeInSpecialCache(Code** code_out);
-  virtual bool UseSpecialCache() { return state_ == CompareIC::KNOWN_OBJECTS; }
-
   Token::Value op_;
   CompareIC::State state_;
-  Handle<Map> known_map_;
 };