*** old/src/share/vm/opto/connode.cpp	Mon Nov 12 10:52:09 2012
--- new/src/share/vm/opto/connode.cpp	Mon Nov 12 10:52:09 2012

*** 463,495 ****
--- 463,472 ----
    // Toned down to rescue meeting at a Phi 3 different oops all implementing
    // the same interface.  CompileTheWorld starting at 502, kd12rc1.zip.
    return (phase->type(in(1)) == phase->type(this)) ? in(1) : this;
  }
  
  // Determine whether "n" is a node which can cause an alias of one of its inputs.  Node types
  // which can create aliases are: CheckCastPP, Phi, and any store (if there is also a load from
  // the location.)
  // Note:  this checks for aliases created in this compilation, not ones which may
  //        be potentially created at call sites.
  static bool can_cause_alias(Node *n, PhaseTransform *phase) {
    bool possible_alias = false;
  
    if (n->is_Store()) {
      possible_alias = !n->as_Store()->value_never_loaded(phase);
    } else {
      int opc = n->Opcode();
      possible_alias = n->is_Phi() ||
          opc == Op_CheckCastPP ||
          opc == Op_StorePConditional ||
          opc == Op_CompareAndSwapP ||
          opc == Op_CompareAndSwapN ||
          opc == Op_GetAndSetP ||
          opc == Op_GetAndSetN;
    }
    return possible_alias;
  }
  
  //------------------------------Value------------------------------------------
  // Take 'join' of input and cast-up type, unless working with an Interface
  const Type *CheckCastPPNode::Value( PhaseTransform *phase ) const {
    if( in(0) && phase->type(in(0)) == Type::TOP ) return Type::TOP;