--- old/src/hotspot/share/opto/castnode.hpp	2019-06-11 16:50:11.000000000 +0200
+++ new/src/hotspot/share/opto/castnode.hpp	2019-06-11 16:50:06.000000000 +0200
@@ -149,6 +149,23 @@
   virtual bool depends_only_on_test() const { return false; }
 };
 
+// convert between a 32 bit integer and a compressed pointer 
+class CastI2NNode : public TypeNode {
+  public:
+  CastI2NNode(Node *n, const Type *t) : TypeNode(t, 2) {
+    init_req(1, n);
+  }
+  virtual int Opcode() const;
+  virtual uint ideal_reg() const { return Op_RegN; }
+};
+
+class CastN2INode : public Node {
+  public:
+  CastN2INode(Node *n) : Node(NULL, n) {}
+  virtual int Opcode() const;
+  virtual uint ideal_reg() const { return Op_RegI; }
+  virtual const Type *bottom_type() const { return TypeInt::INT; }
+};
 
 
 #endif // SHARE_OPTO_CASTNODE_HPP