v.reset(OpPPC64SLWconst)
		v.AuxInt = int64ToAuxInt(s)
		v.AddArg(w)
		return true
	}
	// match: (SLWconst [c] z:(MOVBZreg x))
	// cond: z.Uses == 1 && c < 8
	// result: (CLRLSLWI [newPPC64ShiftAuxInt(c,24,31,32)] x)
	for {
		c := auxIntToInt64(v.AuxInt)
		z := v_0
		if z.Op != OpPPC64MOVBZreg {
			break
		}
		x := z.Args[0]
		if !(z.Uses == 1 && c < 8) {