[patch] Fix PR middle-end/78468

[Eric Botcazou]

> Here's a revised version along these lines, OK for mainline after testing?
> 
> 
> 	PR middle-end/78468
> 	* emit-rtl.c (init_emit): Add ??? comment for problematic alignment
> 	settings of the virtual registers.
> 
> 	Revert again
> 	2016-08-23  Dominik Vogt  <vogt@linux.vnet.ibm.com>
> 
> 	* explow.c (get_dynamic_stack_size): Take known alignment of stack
> 	pointer + STACK_DYNAMIC_OFFSET into account when calculating the size
> 	needed.

Jakub said in the audit trail that he was also OK with this for GCC 7 so I 
have installed the patch after boostrapping/regtesting on SPARC/Solaris.

-- 
Eric Botcazou