https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110096
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Peter Dimov from comment #9) > I don't think I want WFE here, based on what I read about it. Putting the > core to sleep seems like something to do in an embedded system where I have > full control of what cores do, not something to do on the application level, > in a portable C++ library. No, WFE can be used in userspace just fine and in fact it will be interrupted every once in a while. yield only sleeps for a few cycles and then wakes up, while wfe will sleep until an event happens (also WFE is very hypervisor friendly too).
