https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106471
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|c |target --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The xor is needed because of an errata in some Intel cores. There is a different bug already recording the issue with cltq (and should be fixed soon or was already committed, there is a patch).