This is top-notch and very impressive work. I'm currently in the middle of tuning performance of piet-gpu for the Pixel 4[1], and I find myself relying on similar open resources from the Freedreno project. When the time comes to get this running efficiently on M1, having detailed knowledge of the hardware will be similarly invaluable - just the info on registers and occupancy is an important start.
Alyssa isn't personally taking donations for her work on this project, but she suggests you donate to the Autistic Self Advocacy Network or the Software Freedom Conservancy instead :)
Is there a way to support the work?
[1]: https://github.com/linebender/piet-gpu/issues/83