a := inst.Args[i]
		if a == nil {
			continue
		}
		args = append(args, plan9Arg(&inst, pc, symname, a))
	}

	var rep string
	var last Prefix
	for _, p := range inst.Prefix {
		if p == 0 || p.IsREX() || p.IsVEX() {
			break
		}

		switch {
		// Don't show prefixes implied by the instruction text.
		case p&0xFF00 == PrefixImplicit:
			continue
		// Only REP and REPN are recognized repeaters. Plan 9 syntax