This is super cool! As a user of software that is slow, I'd really like these techniques to be used more broadly, and while I have plans to tell people about th

This is super cool! As a user of software that is slow, I'd really like these techniques to be used more broadly, and while I have plans to tell people about them I don't have much hope for "telling people about techniques they can use in low-level languages" translating into fast parsers in software I spend my time waiting for anytime soon. Consider e.g. that simdjson has not been wrapped and highly adopted in many high-level languages. Your thing just generates the correct instructions without the user having to be a knower or a user of a library implementing a specific parser in terms of these techniques. Great!