pinskia@gmail.com wrote: > > def_fn memcpy p2align=6 > > + prfm PLDL1KEEP, [src] > > Why keep rather than strm for the prefetches? It improves small copies by prefetching the input immediately, so setting it to streaming would have an adverse effect as it claims the line will not be used again. For huge copies the initial prefetch has no effect. Wilco