b := v.Block
	typ := &b.Func.Config.Types
	// match: (Div8 x y)
	// result: (DIVW (SignExt8to32 x) (SignExt8to32 y))
	for {
		x := v_0
		y := v_1
		v.reset(OpARM64DIVW)
		v0 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)
		v0.AddArg(x)
		v1 := b.NewValue0(v.Pos, OpSignExt8to32, typ.Int32)
		v1.AddArg(y)
		v.AddArg2(v0, v1)
		return true
	}
}