https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99581
--- Comment #15 from Vladimir Makarov <vmakarov at gcc dot gnu.org> --- I've submitted the patch defining a new memory constraint: https://gcc.gnu.org/pipermail/gcc-patches/2021-March/566976.html The patch itself: https://gcc.gnu.org/pipermail/gcc-patches/attachments/20210319/c979c698/attachment-0001.bin