.ifc \len,4
- vsetivli zero, 5, e8, mf2, ta, ma
+ vsetivli zero, 5, e8, m1, ta, ma
.elseif \len == 8
vsetivli zero, 9, e8, m1, ta, ma
.else
@@ -112,9 +112,9 @@ endfunc
vslide1down.vx v2, \dst, t5
.ifc \len,4
- vsetivli zero, 4, e8, mf4, ta, ma
+ vsetivli zero, 4, e8, m1, ta, ma
.elseif \len == 8
- vsetivli zero, 8, e8, mf2, ta, ma
+ vsetivli zero, 8, e8, m1, ta, ma
What are the benefits of not using fractional multipliers here? Making this
change would result in a 10%-20% slowdown.
mf2/4 m1
vp8_put_bilin4_h_rvv_i32: 158.7 193.7
vp8_put_bilin4_hv_rvv_i32: 255.7 302.7
vp8_put_bilin8_h_rvv_i32: 318.7 358.7
vp8_put_bilin8_hv_rvv_i32: 528.7 569.7
Rémi Denis-Courmont <r...@remlab.net> 于2024年2月24日周六 01:18写道：
> Hi,
>
> +
> +.macro bilin_h_load dst len
> +.ifc \len,4
> + vsetivli zero, 5, e8, mf2, ta, ma
>
> Don't use fractional multipliers if you don't mix element widths.
>
> +.elseif \len == 8
> + vsetivli zero, 9, e8, m1, ta, ma
> +.else
> + vsetivli zero, 17, e8, m2, ta, ma
> +.endif
> +
> + vle8.v \dst, (a2)
> + vslide1down.vx v2, \dst, t5
> +
>
> +.ifc \len,4
> + vsetivli zero, 4, e8, mf4, ta, ma
>
> Same as above.
>
> +.elseif \len == 8
> + vsetivli zero, 8, e8, mf2, ta, ma
>
> Also.
>
> +.else
> + vsetivli zero, 16, e8, m1, ta, ma
> +.endif
>
> + vwmulu.vx v28, \dst, t1
> + vwmaccu.vx v28, a5, v2
> + vwaddu.wx v24, v28, t4
> + vnsra.wi \dst, v24, 3
> +.endm
> +
> +.macro put_vp8_bilin_h len
> + li t1, 8
> + li t4, 4
> + li t5, 1
> + sub t1, t1, a5
> +1:
> + addi a4, a4, -1
> + bilin_h_load v0, \len
> + vse8.v v0, (a0)
> + add a2, a2, a3
> + add a0, a0, a1
> + bnez a4, 1b
> +
> + ret
> +.endm
> +
> +func ff_put_vp8_bilin16_h_rvv, zve32x
> + put_vp8_bilin_h 16
> +endfunc
> +
> +func ff_put_vp8_bilin8_h_rvv, zve32x
> + put_vp8_bilin_h 8
> +endfunc
> +
> +func ff_put_vp8_bilin4_h_rvv, zve32x
> + put_vp8_bilin_h 4
> +endfunc
>
> --
> レミ・デニ-クールモン
> http://www.remlab.net/
>
>
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
>
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
