https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111643
--- Comment #13 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #12) > Gcc does have tail call optimization which should allow the instrumentation > with less overhead. Though tail call optimization happens at -O2 and above > only (by default). The only improvement to this would be fall through alias which allows the removal of the jump to the other function. A direct non-conditional jump is usually predictable so the overhead should be small still.
