[Bug middle-end/78468] [8 regression] libgomp.c/reduction-10.c and many more FAIL

[wdijkstr at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78468

Wilco <wdijkstr at arm dot com> changed:

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                 CC|                            |wdijkstr at arm dot com

--- Comment #38 from Wilco <wdijkstr at arm dot com> ---
(In reply to Rainer Orth from comment #37)
> This patch
> 
> 2017-09-05  Wilco Dijkstra  <wdijkstr@arm.com>
> 
> 	* explow.c (get_dynamic_stack_size): Improve dynamic alignment.
> 
> brought the exact same set of failures back on sparc-sun-solaris2.11.
> 
>   Rainer

The existing alloca code relies on STACK_BOUNDARY being set correctly. Has the
value been fixed already for the OS variants mentioned? If stack alignment
can't be guaranteed by OS/runtime/prolog, STACK_BOUNDARY should be 8.