I tried this out on my system last night. Compile time was quite large (I would say about an hour and a half on my Ryzen 3600X.) I use the DOOM Emacs config, and was surprised to find most things working out of the box with the native compilation. I noticed no difference in startup time. The speed boost was surprisingly noticeable, however, when e.g. opening a buffer that causes a language server to start. Opening CCLS was... instant. It's usually quite quick, but this was noticeably faster.
Great job all around!
does it do anything to change/fix Emacs shitting itself on large buffers?
last time i gave it a try opening a large file would completely kill performance, and iirc in particular really long lines (ex. 1000+ chars) would make the thing chug even if the actual file wasn't super big or anything.