https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97965
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- https://gcc.gnu.org/pipermail/gcc-patches/2020-November/560463.html https://gcc.gnu.org/pipermail/gcc-patches/2020-November/560515.html are some mails on the topic.