[FFmpeg-devel] remove DEC Alpha DSP & support code

[Andreas Rheinhardt]

Rémi Denis-Courmont:
> 
> 
> Le 10 juin 2024 14:57:29 GMT+03:00, Michael Niedermayer <michael at niedermayer.cc> a écrit :
>> Also we have alpha fate clients:
>> https://fate.ffmpeg.org/?query=subarch:alpha%2F%2F
> 
> Are there? I only see Ubuntu 22.04 builds which must be cross-compiled since Ubuntu 22.04 doesn't support DEC Alpha, not even as a port.
> 
> So I guess the tests are run on user-mode QEMU? For the sake of the argument and to answer your performance question, SIMD on QEMU is in my experience much *slower* than scalar C, due to limitations of TCG. So if that's the goal post, then removing the optimisations is actually a performance win.
> 

I doubt that the same can be said about removing the fast 64bit and clz
flags.

- Andreas