[Bug c++/68316] GCC C++ compiler cannot compile a program using RDESED intrinsics

[noloader at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68316

--- Comment #3 from Jeffrey Walton <noloader at gmail dot com> ---
(In reply to Jonathan Wakely from comment #1)
> As the comment says, you need to include <x86intrin.h> not <immintrin.h>

OK, thanks. Here we were told to follow Intels docs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68081. We had to go grepping when
that did not work.

Its very frustrating to determine what we should be doing when the rules become
a moving target. Perhaps GCC could document some of this to remove the
confusion and ambiguity.