Reload going wrong for addition.

[Mohamed Shafi]

2009/9/28 Richard Henderson <rth@redhat.com>:
> On 09/28/2009 07:25 AM, Mohamed Shafi wrote:
>>
>> Hope someone suggests me a solution.
>
> The solution is almost certainly something involving the
> TARGET_SECONDARY_RELOAD hook.  You need to inform reload that it's going to
> need some scratch registers in order to perform the operation.
>
> It's been a long time since I had to fiddle with this sort of thing, so I
> forget all the details involved.  Perhaps someone else has some additional
> advice.
>

Ok what i did was to remove the code from preferred_reload_class
function, so that  now it returns class i.e

#define PREFERRED_RELOAD_CLASS(class, x) class

And did in  TARGET_SECONDARY_RELOAD i added the code to have a scratch
register to do the move operation. Now things are working. So i guess
i should as why we have PREFERRED_RELOAD_CLASS when we can do the same
with TARGET_SECONDARY_RELOAD?

Shafi