[PATCH 0/8] Add sinf/cosf/sincosf CORE-MATH implementations

[Wilco Dijkstra]

Hi Adhemerval,

I ran these on Neoverse V2 and added my old patches with traces from a game engine.
I'm seeing major slowdowns:

             sinf	cosf
     random  45.4%	45.2%
      large  68.0%	53.4%
       huge  19.4%	9.8%
box2d-small  58.2%	100.2%
 box2d-hard  56.7%	72.7%
box2d-mixed  52.5%	54.4%

The box2d results are far worse since they are traces rather than randomized,
so they run much faster due to fewer mispredictions. Latency is 2-3x lower for the
same reason.

So improving the benchtests with traces would be a good idea, however it seems
the CORE-MATH sinf/cosf implementation is significantly slower on modern cores
even with random inputs.

Cheers,
Wilco