22  *
  23  */
  24 
  25 #ifndef SHARE_VM_OPTO_NARROWPTRNODE_HPP
  26 #define SHARE_VM_OPTO_NARROWPTRNODE_HPP
  27 
  28 #include "opto/node.hpp"
  29 #include "opto/opcodes.hpp"
  30 
  31 //------------------------------EncodeNarrowPtr--------------------------------
  32 class EncodeNarrowPtrNode : public TypeNode {
  33   protected:
  34   EncodeNarrowPtrNode(Node* value, const Type* type):
  35   TypeNode(type, 2) {
  36     init_class_id(Class_EncodeNarrowPtr);
  37     init_req(0, NULL);
  38     init_req(1, value);
  39   }
  40   public:
  41   virtual uint  ideal_reg() const { return Op_RegN; }
  42   virtual Node *Ideal_DU_postCCP( PhaseCCP *ccp );
  43 };
  44 
  45 //------------------------------EncodeP--------------------------------
  46 // Encodes an oop pointers into its compressed form
  47 // Takes an extra argument which is the real heap base as a long which
  48 // may be useful for code generation in the backend.
  49 class EncodePNode : public EncodeNarrowPtrNode {
  50   public:
  51   EncodePNode(Node* value, const Type* type):
  52   EncodeNarrowPtrNode(value, type) {
  53     init_class_id(Class_EncodeP);
  54   }
  55   virtual int Opcode() const;
  56   virtual Node *Identity( PhaseTransform *phase );
  57   virtual const Type *Value( PhaseTransform *phase ) const;
  58 };
  59 
  60 //------------------------------EncodePKlass--------------------------------
  61 // Encodes a klass pointer into its compressed form
  62 // Takes an extra argument which is the real heap base as a long which

  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_OPTO_NARROWPTRNODE_HPP
  26 #define SHARE_VM_OPTO_NARROWPTRNODE_HPP
  27 
  28 #include "opto/node.hpp"
  29 #include "opto/opcodes.hpp"
  30 
  31 //------------------------------EncodeNarrowPtr--------------------------------
  32 class EncodeNarrowPtrNode : public TypeNode {
  33   protected:
  34   EncodeNarrowPtrNode(Node* value, const Type* type):
  35   TypeNode(type, 2) {
  36     init_class_id(Class_EncodeNarrowPtr);
  37     init_req(0, NULL);
  38     init_req(1, value);
  39   }
  40   public:
  41   virtual uint  ideal_reg() const { return Op_RegN; }

  42 };
  43 
  44 //------------------------------EncodeP--------------------------------
  45 // Encodes an oop pointers into its compressed form
  46 // Takes an extra argument which is the real heap base as a long which
  47 // may be useful for code generation in the backend.
  48 class EncodePNode : public EncodeNarrowPtrNode {
  49   public:
  50   EncodePNode(Node* value, const Type* type):
  51   EncodeNarrowPtrNode(value, type) {
  52     init_class_id(Class_EncodeP);
  53   }
  54   virtual int Opcode() const;
  55   virtual Node *Identity( PhaseTransform *phase );
  56   virtual const Type *Value( PhaseTransform *phase ) const;
  57 };
  58 
  59 //------------------------------EncodePKlass--------------------------------
  60 // Encodes a klass pointer into its compressed form
  61 // Takes an extra argument which is the real heap base as a long which