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src/share/vm/opto/narrowptrnode.hpp

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  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(PhaseGVN* phase);
  56   virtual const Type* Value(PhaseGVN* 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
  62 // may be useful for code generation in the backend.
  63 class EncodePKlassNode : public EncodeNarrowPtrNode {
  64   public:
  65   EncodePKlassNode(Node* value, const Type* type):
  66   EncodeNarrowPtrNode(value, type) {
  67     init_class_id(Class_EncodePKlass);
  68   }
  69   virtual int Opcode() const;
  70   virtual Node* Identity(PhaseGVN* phase);
  71   virtual const Type* Value(PhaseGVN* phase) const;
  72 };
  73 
  74 //------------------------------DecodeNarrowPtr--------------------------------
  75 class DecodeNarrowPtrNode : public TypeNode {
  76   protected:
  77   DecodeNarrowPtrNode(Node* value, const Type* type):
  78   TypeNode(type, 2) {
  79     init_class_id(Class_DecodeNarrowPtr);
  80     init_req(0, NULL);
  81     init_req(1, value);
  82   }
  83   public:
  84   virtual uint  ideal_reg() const { return Op_RegP; }
  85 };
  86 
  87 //------------------------------DecodeN--------------------------------
  88 // Converts a narrow oop into a real oop ptr.
  89 // Takes an extra argument which is the real heap base as a long which
  90 // may be useful for code generation in the backend.
  91 class DecodeNNode : public DecodeNarrowPtrNode {
  92   public:
  93   DecodeNNode(Node* value, const Type* type):
  94   DecodeNarrowPtrNode(value, type) {
  95     init_class_id(Class_DecodeN);
  96   }
  97   virtual int Opcode() const;
  98   virtual const Type* Value(PhaseGVN* phase) const;
  99   virtual Node* Identity(PhaseGVN* phase);
 100 };
 101 
 102 //------------------------------DecodeNKlass--------------------------------
 103 // Converts a narrow klass pointer into a real klass ptr.
 104 // Takes an extra argument which is the real heap base as a long which
 105 // may be useful for code generation in the backend.
 106 class DecodeNKlassNode : public DecodeNarrowPtrNode {
 107   public:
 108   DecodeNKlassNode(Node* value, const Type* type):
 109   DecodeNarrowPtrNode(value, type) {
 110     init_class_id(Class_DecodeNKlass);
 111   }
 112   virtual int Opcode() const;
 113   virtual const Type* Value(PhaseGVN* phase) const;
 114   virtual Node* Identity(PhaseGVN* phase);
 115 };
 116 
 117 #endif // SHARE_VM_OPTO_NARROWPTRNODE_HPP
 118 


  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 uint Opcode() const;
  55   virtual Node* Identity(PhaseGVN* phase);
  56   virtual const Type* Value(PhaseGVN* 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
  62 // may be useful for code generation in the backend.
  63 class EncodePKlassNode : public EncodeNarrowPtrNode {
  64   public:
  65   EncodePKlassNode(Node* value, const Type* type):
  66   EncodeNarrowPtrNode(value, type) {
  67     init_class_id(Class_EncodePKlass);
  68   }
  69   virtual uint Opcode() const;
  70   virtual Node* Identity(PhaseGVN* phase);
  71   virtual const Type* Value(PhaseGVN* phase) const;
  72 };
  73 
  74 //------------------------------DecodeNarrowPtr--------------------------------
  75 class DecodeNarrowPtrNode : public TypeNode {
  76   protected:
  77   DecodeNarrowPtrNode(Node* value, const Type* type):
  78   TypeNode(type, 2) {
  79     init_class_id(Class_DecodeNarrowPtr);
  80     init_req(0, NULL);
  81     init_req(1, value);
  82   }
  83   public:
  84   virtual uint  ideal_reg() const { return Op_RegP; }
  85 };
  86 
  87 //------------------------------DecodeN--------------------------------
  88 // Converts a narrow oop into a real oop ptr.
  89 // Takes an extra argument which is the real heap base as a long which
  90 // may be useful for code generation in the backend.
  91 class DecodeNNode : public DecodeNarrowPtrNode {
  92   public:
  93   DecodeNNode(Node* value, const Type* type):
  94   DecodeNarrowPtrNode(value, type) {
  95     init_class_id(Class_DecodeN);
  96   }
  97   virtual uint Opcode() const;
  98   virtual const Type* Value(PhaseGVN* phase) const;
  99   virtual Node* Identity(PhaseGVN* phase);
 100 };
 101 
 102 //------------------------------DecodeNKlass--------------------------------
 103 // Converts a narrow klass pointer into a real klass ptr.
 104 // Takes an extra argument which is the real heap base as a long which
 105 // may be useful for code generation in the backend.
 106 class DecodeNKlassNode : public DecodeNarrowPtrNode {
 107   public:
 108   DecodeNKlassNode(Node* value, const Type* type):
 109   DecodeNarrowPtrNode(value, type) {
 110     init_class_id(Class_DecodeNKlass);
 111   }
 112   virtual uint Opcode() const;
 113   virtual const Type* Value(PhaseGVN* phase) const;
 114   virtual Node* Identity(PhaseGVN* phase);
 115 };
 116 
 117 #endif // SHARE_VM_OPTO_NARROWPTRNODE_HPP
 118 
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