public final VM_Address traceObject(VM_Address object, boolean root)
public final VM_Address traceObject(VM_Address object)
  public final VM_Address traceObject(VM_Address object, boolean root)    throws VM_PragmaInline {    if (root) {      if (INC_DEC_ROOT) {	RCBaseHeader.incRC(object);	VM_Interface.getPlan().addToRootSet(object);      } else if (RCBaseHeader.setRoot(object)) {	VM_Interface.getPlan().addToRootSet(object);      }    } else       RCBaseHeader.incRC(object);    return object;  }