On Fri, 2020-02-28 at 18:09 -0800, Richard Henderson wrote:
> On 2/27/20 6:24 PM, Robert Hoo wrote:
> > if ((bv & 6) == 6 && (b & bit_AVX2)) {
> > cache |= CACHE_AVX2;
> > }
> > +if ((bv & 6) == 6 && (b & bit_AVX512F)) {
> > +
On 2/27/20 6:24 PM, Robert Hoo wrote:
> if ((bv & 6) == 6 && (b & bit_AVX2)) {
> cache |= CACHE_AVX2;
> }
> +if ((bv & 6) == 6 && (b & bit_AVX512F)) {
> +cache |= CACHE_AVX512F;
> +}
Oh, one more thing I missed --
And intialize buffer_is_zero() with it, when Intel AVX512F is
available on host.
This function utilizes Intel AVX512 fundamental instructions which
is faster than its implementation with AVX2 (in my unit test, with
4K buffer, on CascadeLake SP, ~36% faster, buffer_zero_avx512() V.S.
