43   virtual bool       is_CFG() const { return true; }
  44   virtual uint hash() const { return NO_HASH; }  // CFG nodes do not hash
  45   virtual bool depends_only_on_test() const { return false; }
  46   virtual const RegMask &out_RegMask() const;
  47   virtual Node *match( const ProjNode *proj, const Matcher *m );
  48   virtual uint ideal_reg() const { return NotAMachineReg; }
  49   ProjNode* proj_out(uint which_proj) const; // Get a named projection
  50 
  51 };
  52 
  53 //------------------------------ProjNode---------------------------------------
  54 // This class defines a Projection node.  Projections project a single element
  55 // out of a tuple (or Signature) type.  Only MultiNodes produce TypeTuple
  56 // results.
  57 class ProjNode : public Node {
  58 protected:
  59   virtual uint hash() const;
  60   virtual uint cmp( const Node &n ) const;
  61   virtual uint size_of() const;
  62   void check_con() const;       // Called from constructor.

  63 
  64 public:
  65   ProjNode( Node *src, uint con, bool io_use = false )
  66     : Node( src ), _con(con), _is_io_use(io_use)
  67   {
  68     init_class_id(Class_Proj);
  69     // Optimistic setting. Need additional checks in Node::is_dead_loop_safe().
  70     if (con != TypeFunc::Memory || src->is_Start())
  71       init_flags(Flag_is_dead_loop_safe);
  72     debug_only(check_con());
  73   }
  74   const uint _con;              // The field in the tuple we are projecting
  75   const bool _is_io_use;        // Used to distinguish between the projections
  76                                 // used on the control and io paths from a macro node
  77   virtual int Opcode() const;
  78   virtual bool      is_CFG() const;
  79   virtual bool depends_only_on_test() const { return false; }
  80   virtual const Type *bottom_type() const;
  81   virtual const TypePtr *adr_type() const;
  82   virtual bool pinned() const;
  83   virtual const Type *Value( PhaseTransform *phase ) const;
  84   virtual uint ideal_reg() const;
  85   virtual const RegMask &out_RegMask() const;

  86 #ifndef PRODUCT
  87   virtual void dump_spec(outputStream *st) const;
  88 #endif
  89 };
  90 
  91 #endif // SHARE_VM_OPTO_MULTNODE_HPP

  43   virtual bool       is_CFG() const { return true; }
  44   virtual uint hash() const { return NO_HASH; }  // CFG nodes do not hash
  45   virtual bool depends_only_on_test() const { return false; }
  46   virtual const RegMask &out_RegMask() const;
  47   virtual Node *match( const ProjNode *proj, const Matcher *m );
  48   virtual uint ideal_reg() const { return NotAMachineReg; }
  49   ProjNode* proj_out(uint which_proj) const; // Get a named projection
  50 
  51 };
  52 
  53 //------------------------------ProjNode---------------------------------------
  54 // This class defines a Projection node.  Projections project a single element
  55 // out of a tuple (or Signature) type.  Only MultiNodes produce TypeTuple
  56 // results.
  57 class ProjNode : public Node {
  58 protected:
  59   virtual uint hash() const;
  60   virtual uint cmp( const Node &n ) const;
  61   virtual uint size_of() const;
  62   void check_con() const;       // Called from constructor.
  63   const Type* proj_type(const Type* t) const;
  64 
  65 public:
  66   ProjNode( Node *src, uint con, bool io_use = false )
  67     : Node( src ), _con(con), _is_io_use(io_use)
  68   {
  69     init_class_id(Class_Proj);
  70     // Optimistic setting. Need additional checks in Node::is_dead_loop_safe().
  71     if (con != TypeFunc::Memory || src->is_Start())
  72       init_flags(Flag_is_dead_loop_safe);
  73     debug_only(check_con());
  74   }
  75   const uint _con;              // The field in the tuple we are projecting
  76   const bool _is_io_use;        // Used to distinguish between the projections
  77                                 // used on the control and io paths from a macro node
  78   virtual int Opcode() const;
  79   virtual bool      is_CFG() const;
  80   virtual bool depends_only_on_test() const { return false; }
  81   virtual const Type *bottom_type() const;
  82   virtual const TypePtr *adr_type() const;
  83   virtual bool pinned() const;
  84   virtual const Type *Value( PhaseTransform *phase ) const;
  85   virtual uint ideal_reg() const;
  86   virtual const RegMask &out_RegMask() const;
  87 
  88 #ifndef PRODUCT
  89   virtual void dump_spec(outputStream *st) const;
  90 #endif
  91 };
  92 
  93 #endif // SHARE_VM_OPTO_MULTNODE_HPP