[FFmpeg-devel] [PATCH] x86/opusdsp: replace loads with shuffles

[Lynne]

Apr 25, 2019, 6:44 PM by onemda at gmail.com:

> On 4/25/19, Paul B Mahol <> onemda at gmail.com <mailto:onemda at gmail.com>> > wrote:
>
>> On 4/24/19, Lynne <>> dev at lynne.ee <mailto:dev at lynne.ee>>> > wrote:
>>
>>> Has a slight speedup.
>>> Can't be carried over to aarch64, since it has no shufps-like
>>> instruction.
>>>
>>
>> On what CPU? And by how much?
>>
>
> Patch should generally be OK if output does not change.
>
> Is this code covered by FATE?
>

Yes, fate-opus.
CPU is Skylake, speedup was about 30 decicycles (10512 -> 10482), low enough it could just be noise. The patch just removes some redundant tables.