https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92692
--- Comment #12 from ktkachov at gcc dot gnu.org --- (In reply to ktkachov from comment #11) > It will need a target with LSE atomics. -march=armv8.1-a or equivalent. Or > add +lse to an -march or -mcpu line. Wait, no sorry, this shouldn't be related to LSE. Perhaps -mno-outline-atomics ?