--- a/hotspot/src/share/vm/opto/connode.hpp	Tue Oct 09 10:09:34 2012 -0700
+++ b/hotspot/src/share/vm/opto/connode.hpp	Fri Oct 12 09:22:52 2012 -0700
@@ -88,6 +88,14 @@
   virtual int Opcode() const;
 };
 
+//------------------------------ConNKlassNode---------------------------------
+// Simple narrow klass constants
+class ConNKlassNode : public ConNode {
+public:
+  ConNKlassNode( const TypeNarrowKlass *t ) : ConNode(t) {}
+  virtual int Opcode() const;
+};
+
 
 //------------------------------ConLNode---------------------------------------
 // Simple long constants
@@ -270,42 +278,91 @@
 };
 
 
+//------------------------------EncodeNarrowPtr--------------------------------
+class EncodeNarrowPtrNode : public TypeNode {
+ protected:
+  EncodeNarrowPtrNode(Node* value, const Type* type):
+    TypeNode(type, 2) {
+    init_class_id(Class_EncodeNarrowPtr);
+    init_req(0, NULL);
+    init_req(1, value);
+  }
+ public:
+  virtual uint  ideal_reg() const { return Op_RegN; }
+  virtual Node *Ideal_DU_postCCP( PhaseCCP *ccp );
+};
+
 //------------------------------EncodeP--------------------------------
 // Encodes an oop pointers into its compressed form
 // Takes an extra argument which is the real heap base as a long which
 // may be useful for code generation in the backend.
-class EncodePNode : public TypeNode {
+class EncodePNode : public EncodeNarrowPtrNode {
  public:
   EncodePNode(Node* value, const Type* type):
-    TypeNode(type, 2) {
+    EncodeNarrowPtrNode(value, type) {
     init_class_id(Class_EncodeP);
-    init_req(0, NULL);
-    init_req(1, value);
   }
   virtual int Opcode() const;
   virtual Node *Identity( PhaseTransform *phase );
   virtual const Type *Value( PhaseTransform *phase ) const;
-  virtual uint  ideal_reg() const { return Op_RegN; }
+};
 
-  virtual Node *Ideal_DU_postCCP( PhaseCCP *ccp );
+//------------------------------EncodePKlass--------------------------------
+// Encodes a klass pointer into its compressed form
+// Takes an extra argument which is the real heap base as a long which
+// may be useful for code generation in the backend.
+class EncodePKlassNode : public EncodeNarrowPtrNode {
+ public:
+  EncodePKlassNode(Node* value, const Type* type):
+    EncodeNarrowPtrNode(value, type) {
+    init_class_id(Class_EncodePKlass);
+  }
+  virtual int Opcode() const;
+  virtual Node *Identity( PhaseTransform *phase );
+  virtual const Type *Value( PhaseTransform *phase ) const;
+};
+
+//------------------------------DecodeNarrowPtr--------------------------------
+class DecodeNarrowPtrNode : public TypeNode {
+ protected:
+  DecodeNarrowPtrNode(Node* value, const Type* type):
+    TypeNode(type, 2) {
+    init_class_id(Class_DecodeNarrowPtr);
+    init_req(0, NULL);
+    init_req(1, value);
+  }
+ public:
+  virtual uint  ideal_reg() const { return Op_RegP; }
 };
 
 //------------------------------DecodeN--------------------------------
 // Converts a narrow oop into a real oop ptr.
 // Takes an extra argument which is the real heap base as a long which
 // may be useful for code generation in the backend.
-class DecodeNNode : public TypeNode {
+class DecodeNNode : public DecodeNarrowPtrNode {
  public:
   DecodeNNode(Node* value, const Type* type):
-    TypeNode(type, 2) {
+    DecodeNarrowPtrNode(value, type) {
     init_class_id(Class_DecodeN);
-    init_req(0, NULL);
-    init_req(1, value);
   }
   virtual int Opcode() const;
-  virtual Node *Identity( PhaseTransform *phase );
   virtual const Type *Value( PhaseTransform *phase ) const;
-  virtual uint  ideal_reg() const { return Op_RegP; }
+  virtual Node *Identity( PhaseTransform *phase );
+};
+
+//------------------------------DecodeNKlass--------------------------------
+// Converts a narrow klass pointer into a real klass ptr.
+// Takes an extra argument which is the real heap base as a long which
+// may be useful for code generation in the backend.
+class DecodeNKlassNode : public DecodeNarrowPtrNode {
+ public:
+  DecodeNKlassNode(Node* value, const Type* type):
+    DecodeNarrowPtrNode(value, type) {
+    init_class_id(Class_DecodeNKlass);
+  }
+  virtual int Opcode() const;
+  virtual const Type *Value( PhaseTransform *phase ) const;
+  virtual Node *Identity( PhaseTransform *phase );
 };
 
 //------------------------------Conv2BNode-------------------------------------