with a few small changes it's possible to use the skylake sgemm code
also for haswell, this gives a modest gain (10% range) for smallish
matrixes but does wonders for very skinny matrixes
in the threading code there are cases where N or M can become 0,
and the optimized beta code did not handle this well, leading
to a crash
during the audit for the crash a few edge conditions on the if statements
were found and fixed as well
Wangyang Guo
Arjan van de Ven
Andrew