[Bug target/60204] struct with __m512i is mishandled in function parameter passing and return

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60204

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |ubizjak at gmail dot com
   Target Milestone|---                         |4.9.0
           Severity|normal                      |major

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #2)

> It is a bug in psABI.  It should read as "eight \eightbytes".

So, let's fix the psABI first and then fix gcc.

This PR should be resolved before 4.9 is released.