[mrngm]

I'm sure you've heard of PHP's opcache by now. That's not experimental and actually caches the interpreted code in memory for faster subsequent execution.

[that_guy_iain]

Yes, it makes it faster but does not deal with the core performance issues which is why Roadrunner, Frankenphp, etc exist.

[Implicated]

I see, you're just trolling at this point.

[withinboredom]

Yes, and in 8.4, uses an actual IR for machine code generation and is pretty cool!