PATCH: Align DImode to 4 byte for i386

[Jan Hubicka]

> Here is a patch. OK for 4.4 when it is opened?

Seems OK.  I hope there is no ABI breakage we missed.

Honza
> 
> Thanks.
> 
> H.J.
> --
> 2008-02-03  H.J. Lu  <hongjiu.lu@intel.com>
> 
> 	* config/i386/i386-modes.def: Use 4 byte alignment on DI in
> 	32bit bit.
> 
> Index: config/i386/i386-modes.def
> ===================================================================
> --- config/i386/i386-modes.def	(revision 1470)
> +++ config/i386/i386-modes.def	(working copy)
> @@ -17,6 +17,10 @@ You should have received a copy of the G
>  along with GCC; see the file COPYING3.  If not see
>  <http://www.gnu.org/licenses/>.  */
>  
> +/* In 32bit, DI mode uses 32bit registers.  Only 4 byte alignment
> +   is needed.  */
> +ADJUST_ALIGNMENT (DI, TARGET_64BIT ? 8 : 4);
> +
>  /* The x86_64 ABI specifies both XF and TF modes.
>     XFmode is __float80 is IEEE extended; TFmode is __float128
>     is IEEE quad.  */