aztec100

There have been many similar talks in the past decades. At some point Unladen Swallow was presented as "Google's project" (which is quite exaggerated).

It looks more like Microsoft has JIT envy now that Instagram and others have open sourced (quite restricted) JIT projects and has to show presence again.

I think every CPython JIT project will be full of corner cases in both performance and behavior, so it will add to the growing database of weird Python behavior that users have to memorize.