[PATCH][DAGCombiner] Teach how to simply a xor/and/or of two shuffles with same mask.

[Andrea Di Biagio]

Thanks Nadav!

Committed revision 204160.

On Tue, Mar 18, 2014 at 4:54 PM, Nadav Rotem <nrotem at apple.com> wrote:
> LGTM.
>
> On Mar 18, 2014, at 9:40 AM, Andrea Di Biagio <andrea.dibiagio at gmail.com> wrote:
>
>> <patch-dagcombiner.diff>
>