https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92757
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Ricardo Abreu from comment #7) > Usually CLI switches aren't silently inoperative until you provide other > switches. Usually CLI applications don't have as many switches as GCC with as many non-trivial interactions between them. Also see https://gcc.gnu.org/wiki/FAQ#optimization-options