https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59857
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- volatile performance is known to be not as good otherwise. Basically volatile is a huge hammer to GCC and this won't be fixed any time soon.