[PATCH][AArch64] Testcase fix for __ATOMIC_CONSUME

[Torvald Riegel]

On Mon, 2015-02-09 at 09:10 -0800, Mike Stump wrote:
> On Feb 9, 2015, at 7:11 AM, Alex Velenko <Alex.Velenko@arm.com> wrote:
> > The following patch makes atomic-op-consume.c XFAIL
> > 
> > Is this patch ok?
> 
> Ok.
> 
> I’d shorten the comment above the xfail to be exceedingly short:
> 
>   /* PR59448 consume not implemented yet */
> 
> The reason is the brain can process this about 8x faster.  Also, one can cut and paste the PR part into a web browser directly, or, if you have an electric bugzilla mode for emacs, it will pop right up. */

Given the discussions we had in ISO C++ SG1, it seems the only way to
fix memory_order_consume is to deprecate it (or let it rot forever), and
add something else to the standard.  See
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4321.pdf

IOW, I believe the promotion is here to stay.  I'm not aware of any
other implementation doing something else.

Thus, XFAIL doesn't seem right to me.