A tracing JIT is no small feat. You could go simpler and have a template JIT, which has a lot less complexity. Guile went with that, and the speedup from the al

A tracing JIT is no small feat. You could go simpler and have a template JIT, which has a lot less complexity. Guile went with that, and the speedup from the already quite fast 2.2 to 3.0 was significant. Andy has been working at Igalia with the JS engines of chrome and Firefox, which makes me believe it might not be easily reached by mere mortals, but looking at the source it is quite easy to follow, even though I would not trust myself to make any significant changes.