https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107651
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Martin Liška from comment #8) > You can quickly find 'vectorize' option in the sphinx version of the Index. But the sphinx generated index is not very useful as it lists all options under symbols heading which is very confusing to programmers.