[PATCH, FT32] initial support

[Jeff Law]

On 05/14/2015 11:36 AM, Segher Boessenkool wrote:
> The alternative that allows move to mem is alt 1, but it thinks the operand
> doesn't match (it is "B" or "W"), it picks alt 0, loop, everyone unhappy.
>
> "B" should match it seems?
>
> (Why does IRA think r56 should be in memory?  Yeah, good question.)
Independent of that, if a reg-reg move generated by LRA (which is really 
a mem->reg or reg->mem) blows up on this target for some reason, then 
that needs to be addressed independently of whether or not IRA might 
have made a bad choice for which pseudo to spill.

Jeff