Factor out HSimulate::ReplayEnvironment.

src/hydrogen-instructions.h

 // Copyright 2012 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 1658 matching lines @@
   }
 
   virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { return false; }
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
     return Representation::None();
   }
 
   void MergeWith(ZoneList<HSimulate*>* list);
   bool is_candidate_for_removal() { return removable_ == REMOVABLE_SIMULATE; }
 
+  // Replay effects of this instruction on the given environment.
+  void ReplayEnvironment(HEnvironment* env);
+
   DECLARE_CONCRETE_INSTRUCTION(Simulate)
 
 #ifdef DEBUG
   virtual void Verify() V8_OVERRIDE;
   void set_closure(Handle<JSFunction> closure) { closure_ = closure; }
   Handle<JSFunction> closure() const { return closure_; }
 #endif
 
  protected:
   virtual void InternalSetOperandAt(int index, HValue* value) V8_OVERRIDE {
@@ skipping 5110 matching lines @@
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_