[LLVMdev] X86 LowerVECTOR_SHUFFLE Question

[David A. Greene]

Bruno Cardoso Lopes <bruno.cardoso at gmail.com> writes:

>> There's certainly been improvement on the TableGen side of things.  I
>> really liked the unpck*, shufp, etc. nodes and the ShuffleVectorSDNode.
>> That's a huge help.  It's too bad we're getting rid of them.  But
>> legalization still looks about the same to me.
>
> The idea is to use tablegen again once we have a clean implementation.

Ah, good.  Having a clearer idea of the roadmap helps.

> It would be good to have all tables and per-processor logic in a
> tablegen file, but I think a clean implementation needs to be done
> first.

Do you mean a clean implementation of lowering?

> Anyway, I don't have time to work in any of this at the moment, and
> I'm not also the one with final word on this. I'm happy to help with
> the bugs that may appear and with some design ideas though.

Understandable.  Since I'm working in this area now I'll do what I can
to clean things up.  Do let me know if I start heading off in the wrong
direction.  :)

                                 -Dave