Abt long long support

[Dave Korn]

On 10 November 2006 17:55, Rask Ingemann Lambertsen wrote:

> On Fri, Nov 10, 2006 at 07:17:29AM -0800, Ian Lance Taylor wrote:
>> "Mohamed Shafi" <shafitvm@gmail.com> writes:
>> 
>>> 1. What could be the reason for this behavior?
>> 
>> I'm really shooting in the dark here, but my guess is that you have a
>> define_expand for movdi that is not reload safe.
> 
>    And in case the target doesn't have registers capable of holding DImode
> values, consider deleting the movdi pattern.

  No, surely you don't want to do that!  You really need a movdi pattern -
even more so if there are no natural DImode-sized registers, as gcse can get
terribly confused by bad reg_equal notes if you don't.  See e.g.:

http://gcc.gnu.org/ml/gcc/2003-04/msg01397.html
http://gcc.gnu.org/ml/gcc/2004-06/msg00993.html

    cheers,
      DaveK
-- 
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