If you're curious about how their YJIT, with it's lazy basic block versioning, works then I can highly recommend watching their presentation on it: https://www.

If you're curious about how their YJIT, with it's lazy basic block versioning, works then I can highly recommend watching their presentation on it: https://www.youtube.com/watch?v=PFb5wNj2ztM https://www.youtube.com/watch?v=PFb5wNj2ztM