src/hotspot/share/opto/machnode.hpp

*** 195,205 ****
  //------------------------------MachNode---------------------------------------
  // Base type for all machine specific nodes.  All node classes generated by the
  // ADLC inherit from this class.
  class MachNode : public Node {
  public:
!   MachNode() : Node((uint)0), _num_opnds(0), _opnds(NULL) {
      init_class_id(Class_Mach);
    }
    // Required boilerplate
    virtual uint size_of() const { return sizeof(MachNode); }
    virtual int  Opcode() const;          // Always equal to MachNode
--- 195,205 ----
  //------------------------------MachNode---------------------------------------
  // Base type for all machine specific nodes.  All node classes generated by the
  // ADLC inherit from this class.
  class MachNode : public Node {
  public:
!   MachNode() : Node((uint)0), _barrier(0), _num_opnds(0), _opnds(NULL) {
      init_class_id(Class_Mach);
    }
    // Required boilerplate
    virtual uint size_of() const { return sizeof(MachNode); }
    virtual int  Opcode() const;          // Always equal to MachNode
*** 209,218 ****
--- 209,221 ----
    virtual uint oper_input_base() const { return 1; }
    // Position of constant base node in node's inputs. -1 if
    // no constant base node input.
    virtual uint mach_constant_base_node_input() const { return (uint)-1; }
  
+   uint8_t barrier_data() const { return _barrier; }
+   void set_barrier_data(uint data) { _barrier = data; }
+ 
    // Copy inputs and operands to new node of instruction.
    // Called from cisc_version() and short_branch_version().
    // !!!! The method's body is defined in ad_<arch>.cpp file.
    void fill_new_machnode(MachNode *n) const;
  
*** 253,262 ****
--- 256,268 ----
    // same singleton regiser (e.g., Intel IDIV which binds AX to be
    // both an input and an output).  It is nessecary when the input and
    // output have choices - but they must use the same choice.
    virtual uint two_adr( ) const { return 0; }
  
+   // The GC might require some barrier metadata for machine code emission.
+   uint8_t _barrier;
+ 
    // Array of complex operand pointers.  Each corresponds to zero or
    // more leafs.  Must be set by MachNode constructor to point to an
    // internal array of MachOpers.  The MachOper array is sized by
    // specific MachNodes described in the ADL.
    uint _num_opnds;