On Tue, Jul 02, 2019 at 06:32:52PM -0400, Jeffrey Walton wrote: > On Tue, Jul 2, 2019 at 6:31 PM Segher Boessenkool > <segher@xxxxxxxxxxxxxxxxxxx> wrote: > > > > On Tue, Jul 02, 2019 at 05:46:24PM -0400, Jeffrey Walton wrote: > > > We don't use <x86intrin.h> because it is missing on too many systems > > > we support (even those that use GCC). > > > > > > Is there a way to get GCC to provide the functions through a system > > > header as expected? > > > > #include <x86intrin.h> > > > > It *is* a system header. And it is provided by GCC, and it gives you > > _mm_roti_epi64, provided you have GCC 4.5 or later. > > > > If you don't want to use it, you're on your own. Good luck. > > I believe <x86intrin.h> is a GCC specific header. I believe the > expected header is <amminstrin.h>. Ten years ago this was added to GCC, by AMD people, with the same header arrangement as we have now. Clang uses the same, fwiw. Segher
