[FFmpeg-devel] [PATCH] avcodec/utvideodec: add SIMD for restore_rgb_planes

[Paul B Mahol]

On 6/26/17, Clement Boesch <u at pkh.me> wrote:
> On Mon, Jun 26, 2017 at 11:38:26PM +0200, Paul B Mahol wrote:
> [...]
>> +    .loop:
>> +        mova           m0, [src_rq + xq]
>> +        mova           m1, [src_gq + xq]
>> +        mova           m2, [src_bq + xq]
>
>> +        paddb          m0, m1
>> +        paddb          m2, m1
>> +        psubb          m0, [pb_128]
>> +        psubb          m2, [pb_128]
>
> would the following work to save one instruction?
>
>         psubb          m1, [pb_128]
>         paddb          m0, m1
>         paddb          m2, m1

Yes, changed.

>
>> +        mova  [src_rq+xq], m0
>> +        mova  [src_bq+xq], m2
>> +        add            xq, mmsize
>> +    jl .loop
>> +
> [...]
>
> --
> Clement B.
>