--- old/src/share/vm/opto/connode.hpp	2021-04-28 19:35:13.630331799 +0800
+++ new/src/share/vm/opto/connode.hpp	2021-04-28 19:35:13.514327238 +0800
@@ -235,7 +235,6 @@
   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
   virtual int Opcode() const;
   virtual uint ideal_reg() const = 0;
-  virtual Node *Ideal_DU_postCCP( PhaseCCP * );
 };
 
 //------------------------------CastIINode-------------------------------------
@@ -260,7 +259,6 @@
   virtual uint ideal_reg() const { return Op_RegI; }
   virtual Node *Identity( PhaseTransform *phase );
   virtual const Type *Value( PhaseTransform *phase ) const;
-  virtual Node *Ideal_DU_postCCP( PhaseCCP * );
   const bool has_range_check() {
  #ifdef _LP64
      return _range_check_dependency;
@@ -281,7 +279,6 @@
   CastPPNode (Node *n, const Type *t ): ConstraintCastNode(n, t) {}
   virtual int Opcode() const;
   virtual uint ideal_reg() const { return Op_RegP; }
-  virtual Node *Ideal_DU_postCCP( PhaseCCP * );
 };
 
 //------------------------------CheckCastPPNode--------------------------------
@@ -299,9 +296,6 @@
   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
   virtual int   Opcode() const;
   virtual uint  ideal_reg() const { return Op_RegP; }
-  // No longer remove CheckCast after CCP as it gives me a place to hang
-  // the proper address type - which is required to compute anti-deps.
-  //virtual Node *Ideal_DU_postCCP( PhaseCCP * );
 };
 
 
@@ -316,7 +310,6 @@
   }
  public:
   virtual uint  ideal_reg() const { return Op_RegN; }
-  virtual Node *Ideal_DU_postCCP( PhaseCCP *ccp );
 };
 
 //------------------------------EncodeP--------------------------------