[FFmpeg-devel] [PATCH] af_afir: RISC-V V fcmul_add

[flow gg]

Okay, I have modified them to 64 and added some descriptions.

Rémi Denis-Courmont <remi at remlab.net> 于2023年11月15日周三 23:06写道：

> Le keskiviikkona 15. marraskuuta 2023, 10.59.55 EET flow gg a écrit :
> > Okay, I have updated these issues in the patch.
>
> It does not assemble but I can fix it locally. The narrowing shift
> trickery
> require Zve64x, or rather Zve64f in this case.
>
> The performance improvement is much better on newer hardware:
> fcmul_add_c: 4891.2
> fcmul_add_rvv_f64: 2399.5
>
> FWIW, VLSEG2E32.V remains slightly worse than with shifting:
> fcmul_add_c: 4891.2
> fcmul_add_rvv_f32: 2877.5
>
> --
> 雷米‧德尼-库尔蒙
> http://www.remlab.net/
>
>
>
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