Thanks for the review.
On Fri, Jun 12, 2020 at 11:28 AM Jeff Law wrote:
>
> On Fri, 2020-06-05 at 13:46 +0800, Hongtao Liu via Gcc-patches wrote:
> > Hi:
> >
> > +/* Optimize vector MUL generation for V8QI, V16QI and V32QI
> > + under TARGET_AVX512BW. i.e. for v16qi a * b, it has
> > +
> > +
On Fri, 2020-06-05 at 13:46 +0800, Hongtao Liu via Gcc-patches wrote:
> Hi:
>
> +/* Optimize vector MUL generation for V8QI, V16QI and V32QI
> + under TARGET_AVX512BW. i.e. for v16qi a * b, it has
> +
> + vpmovzxbw ymm2, xmm0
> + vpmovzxbw ymm3, xmm1
> + vpmullw ymm4, ymm2, ymm3
> +
Hi:
+/* Optimize vector MUL generation for V8QI, V16QI and V32QI
+ under TARGET_AVX512BW. i.e. for v16qi a * b, it has
+
+ vpmovzxbw ymm2, xmm0
+ vpmovzxbw ymm3, xmm1
+ vpmullw ymm4, ymm2, ymm3
+ vpmovwb xmm0, ymm4
+
+ it would take less instructions than ix86_expand_vecop_qihi.
+
