http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56298
--- Comment #4 from Piotr Wyderski <piotr.wyderski at gmail dot com> 2013-02-12 13:30:37 UTC --- @Richard: I don't have ICC right now, so a follow-up question is: does ICC "enable" those built-in intrinsics conditionally (as does GCC) or not (as MSVC). I think that ICC is the golden standard in this respect, so the answer would ultimately indicate whether my report is valid (and the bug should be fixed some day) or not. Thanks.