On 05/18/2016 06:25 PM, Pinski, Andrew wrote: > What about doing addv (adding across lanes) and then seeing if that result is zero. > Something like: > addv h0, v0.8h > mov w0, s0 > cbnz w0, diff Mmm, but that mov w0, so has a long latency. How about addv h0, v0.8h fcmp s0, #0.0 bne ... Andrew.