https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90600
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> --- Intel documents that it uses "unsigned __int64" but I don't see where they document what __int64 is. We could take a "void *out" argument and cast it inside the function, but that would lose useful diagnostics for people trying to pass a 32-bit type. We could overload in C++. Not sure any of that is worth the trouble, those interfaces are target-specific anyway.
