https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83324
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to David Edelsohn from comment #9) > Brandt Bucher: A JIT compiler for CPython > https://www.youtube.com/watch?v=HxSHIpEQRjs > https://github.com/brandtbucher/cpython/tree/justin But must tail is there for the gcc jit interface already. Maybe it is not exposed to c/c++ attribute but it is there already. So maybe this is just not noticing that point.