sshPrivateKey = tokens[1]
		case "pub-key-algos":
			allowPubKeys = filterAlgos(arg, strings.Split(tokens[1], ","), supportedPubKeyAuthAlgos)
		case "kex-algos":
			allowKexAlgos = filterAlgos(arg, strings.Split(tokens[1], ","), supportedKexAlgos)
		case "cipher-algos":
			allowCiphers = filterAlgos(arg, strings.Split(tokens[1], ","), supportedCiphers)
		case "mac-algos":

	lssk := LocalSlotSplitKey{name, offset, t}
	if als, ok := f.CanonicalLocalSplits[lssk]; ok {
		return als
	}
	// Note: the _ field may appear several times.  But
	// have no fear, identically-named but distinct Autos are
	// ok, albeit maybe confusing for a debugger.
	ls := f.fe.SplitSlot(name, sfx, offset, t)
	f.CanonicalLocalSplits[lssk] = &ls
	return &ls
}

	var lo, hi int64

	// Opaque state for backend to use. Current backends use it to
	// keep track of which helper registers have been zeroed.
	var state uint32

	// Iterate through declarations. Autos are sorted in decreasing
	// frame offset order.
	for _, n := range e.curfn.Dcl {
		if !n.Needzero() {
			continue
		}
		if n.Class != ir.PAUTO {
			e.Fatalf(n.Pos(), "needzero class %d", n.Class)