https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79430
--- Comment #71 from Thomas Koenig <tkoenig at gcc dot gnu.org> --- Created attachment 41260 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41260&action=edit Proposed patch (reverting all updates to reg-stack.c after r244920 If no other solution can be found, we can always apply this patch, which simply reverts all changes after r244920 . The corresponding test cases would have to be set to XFAIL.