Hi In gcc version 3.4.6: In the function sched_analyze_2(), if the GET_CODE (rtx) is UNSPEC_VOLATILE, reg_pending_barrier is set to TRUE_BARRIER. I would like to know if TRUE_BARRIER is set, what would happen further ? How does instruction movement/re-ordering happens ? In which function this is done ? Please help as much information can about if GET_CODE (rtx) is UNSPEC_VOLATILE,then reg_pending_barrier is set to TRUE_BARRIER. Thanks in Advance Raja Saleru
