On 10/23/2016 10:55 PM, [email protected] wrote: > From: Vijaya Kumar K <[email protected]> > > Optional parameters of __builtin_prefetch() which specifies > rw and locality to 0's. For checking buffer is zero, set rw as read > and temporal locality to 0. > > On arm64, __builtin_prefetch(addr) generates 'prfm pldl1keep' > where __builtin_prefetch(addr, 0, 0) generates 'prfm pldl1strm' > instruction which is optimal for this use case > > Signed-off-by: Vijaya Kumar K <[email protected]> > ---
Reviewed-by: Richard Henderson <[email protected]> r~
