[Bug target/58757] Advertise the lack of denormal support on alpha without -mieee

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58757

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #2)
> Well, the testcase does fail on alpha:

Thanks. In the original testcase (
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00875.html ) I was xfailing on
alpha, but Joseph asked me not to xfail it until someone has actually observed
the failure. Could you please xfail it (or whatever similar option you prefer)
until this PR is addressed? (Unless you want to fix this PR, of course ;-)