https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83087
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- My understanding has been that the CET stuff is essentially ABI incompatible (CET enabled libraries/binaries vs. non-CET enabled ones) on CET HW, so it should be better treated like a multilib. So, unless everything on the system is CET enabled, putting the CET support in is just waste of I-cache.