Worthwhileness would depend on your motivation for doing it. I guess a very tiny microcontroller could be a use case, where it's a good tradeoff to save some m

Worthwhileness would depend on your motivation for doing it. I guess a very tiny microcontroller could be a use case, where it's a good tradeoff to save some memory (=cost) by eliding the JIT even if execution is slow. Even then you could just replace this with offine binary translation.