RFC: Very long alternative lists for RTL patterns like move

[Jeff Law]

On 03/14/2016 01:55 PM, Segher Boessenkool wrote:
>
>>> One thought I've had is to have a define_alternative meta patterns.
>>> Something like:
>>>
>> Can't hurt to try.
>>
>> The other thing to ponder is whether or not we have to continue to have
>> a single movXX insn handle all the possible constraints in a world where
>> we're using LRA rather than reload.
>
> It is still needed with current IRA/LRA, but perhaps that can be changed.
Sigh.  Too bad..

> That would be lovely!  (add<mode>3 is still a bit special as well?)
Yes, I think so.

jeff