src/share/vm/opto/memnode.hpp

rev 2892 : 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
Summary: adds store store barrier after initialization of header and body of objects.
Reviewed-by:

*** 916,925 ****
--- 916,934 ----
    MemBarReleaseLockNode(Compile* C, int alias_idx, Node* precedent)
      : MemBarNode(C, alias_idx, precedent) {}
    virtual int Opcode() const;
  };
  
+ class MemBarStoreStoreNode: public MemBarNode {
+ public:
+   MemBarStoreStoreNode(Compile* C, int alias_idx, Node* precedent)
+     : MemBarNode(C, alias_idx, precedent) {
+     init_class_id(Class_MemBarStoreStore);
+   }
+   virtual int Opcode() const;
+ };
+ 
  // Ordering between a volatile store and a following volatile load.
  // Requires multi-CPU visibility?
  class MemBarVolatileNode: public MemBarNode {
  public:
    MemBarVolatileNode(Compile* C, int alias_idx, Node* precedent)
*** 948,957 ****
--- 957,968 ----
      Complete      = 1,
      WithArraycopy = 2
    };
    int _is_complete;
  
+   bool _does_not_escape;
+ 
  public:
    enum {
      Control    = TypeFunc::Control,
      Memory     = TypeFunc::Memory,     // MergeMem for states affected by this op
      RawAddress = TypeFunc::Parms+0,    // the newly-allocated raw address
*** 987,996 ****
--- 998,1010 ----
  
    // Mark complete.  (Must not yet be complete.)
    void set_complete(PhaseGVN* phase);
    void set_complete_with_arraycopy() { _is_complete = Complete | WithArraycopy; }
  
+   bool does_not_escape() { return _does_not_escape; }
+   void set_does_not_escape() { _does_not_escape = true; }
+ 
  #ifdef ASSERT
    // ensure all non-degenerate stores are ordered and non-overlapping
    bool stores_are_sane(PhaseTransform* phase);
  #endif //ASSERT