FLG_P1_VAL
if (FLG_P1_VAL(flags) != REG_NONE || FLG_P2_VAL(flags) != REG_NONE ||
get_regname(dhp, FLG_P1_VAL(flags), f->fused.rs1),
get_regname(dhp, FLG_P1_VAL(flags), f->fused.rs2),
get_regname(dhp, FLG_P1_VAL(flags), f->fused.rs3),
get_regname(dhp, FLG_P1_VAL(flags), f->fused.rd));
r1 = get_regname(dhp, FLG_P1_VAL(flags), f->f3.rs1);
p1 = (FLG_P1_VAL(flags) != REG_NONE);