https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86314
--- Comment #5 from Matthieu M <matthieum.147192 at gmail dot com> --- (In reply to Jakub Jelinek from comment #4) > Created attachment 44322 [details] > gcc9-pr86314.patch > > Untested fix. The peephole2s didn't expect that an insn with a set of flags > and some other set could use the reg it wants to clear inside of the lhs of > the second set. Thank for your quick assessment of the issue. Would you mind explaining the impact? For now, I have removed the offending instance of "__atomic_fetch_or" from my code. Is this a sufficient work-around or can you think of other constructs/instructions which may trigger this particular bug?
