D_DTS_VI
val = D_DTS_VO | D_DTS_VI | D_DTS_INS
val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(prevpipe) | pipe;
val = D_DTS_VI | D_DTS_DEL | D_DTS_PRVIN(prevpipe) | pipe;