Comment by lhames

FWIW eventual stability is a goal, but there's going to be more churn as we work towards full arbitrary program execution (https://www.youtube.com/watch?v=qgtA-bWC_vM covers some recent progress).

If you're looking for stability in practice: the ORC LLJIT API is your best bet at the moment (or sticking to MCJIT until it's removed).