There have been performance improvements in Perl 5 over the last 5 years. Nothing dramatic like a JIT, but a collection of smaller improvements that add up to something significant.
I'm assuming that sort of thing will continue, but with less backporting to version 5. Jitting just the regex engine without compatibility problems is one potential thing that could happen. PCRE2 is pretty close to that now.
I did that. It's not that big of a performance gain.
My jit will for sure, but I ran out of funding.
My signatures and types provided a 100% speed boost.
I'm assuming that sort of thing will continue, but with less backporting to version 5. Jitting just the regex engine without compatibility problems is one potential thing that could happen. PCRE2 is pretty close to that now.