src/hotspot/share/opto/memnode.hpp

*** 1603,1608 ****
--- 1603,1644 ----
    virtual uint ideal_reg() const { return NotAMachineReg; }
    virtual uint match_edge(uint idx) const { return idx==2; }
    virtual const Type *bottom_type() const { return ( AllocatePrefetchStyle == 3 ) ? Type::MEMORY : Type::ABIO; }
  };
  
+ // cachewb node for guaranteeing writeback of the cache line at a
+ // given address to (persistent) storage
+ class CacheWBNode : public Node {
+ public:
+   CacheWBNode(Node *ctrl, Node *mem, Node *addr) : Node(ctrl, mem, addr) {}
+   virtual int Opcode() const;
+   virtual uint ideal_reg() const { return NotAMachineReg; }
+   virtual uint match_edge(uint idx) const { return (idx == 2); }
+   virtual const TypePtr *adr_type() const { return TypeRawPtr::BOTTOM; }
+   virtual const Type *bottom_type() const { return Type::MEMORY; }
+ };
+ 
+ // cachewb pre sync node for ensuring that writebacks are serialised
+ // relative to preceding or following stores
+ class CacheWBPreSyncNode : public Node {
+ public:
+   CacheWBPreSyncNode(Node *ctrl, Node *mem) : Node(ctrl, mem) {}
+   virtual int Opcode() const;
+   virtual uint ideal_reg() const { return NotAMachineReg; }
+   virtual uint match_edge(uint idx) const { return false; }
+   virtual const TypePtr *adr_type() const { return TypeRawPtr::BOTTOM; }
+   virtual const Type *bottom_type() const { return Type::MEMORY; }
+ };
+ 
+ // cachewb pre sync node for ensuring that writebacks are serialised
+ // relative to preceding or following stores
+ class CacheWBPostSyncNode : public Node {
+ public:
+   CacheWBPostSyncNode(Node *ctrl, Node *mem) : Node(ctrl, mem) {}
+   virtual int Opcode() const;
+   virtual uint ideal_reg() const { return NotAMachineReg; }
+   virtual uint match_edge(uint idx) const { return false; }
+   virtual const TypePtr *adr_type() const { return TypeRawPtr::BOTTOM; }
+   virtual const Type *bottom_type() const { return Type::MEMORY; }
+ };
+ 
  #endif // SHARE_VM_OPTO_MEMNODE_HPP