https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107601
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note SLOW_SHORT_ACCESS is unused and has been as far as I can tell it was never used. I submitted a patch to remove it: https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605574.html Note also at one point SLOW_BYTE_ACCESS was used to control the size of bool type in C++. This is even why on powerpc-darwin bool is 32bits ...