On Thu, May 31, 2018 at 10:24 AM, Matt Turner <matts...@gmail.com> wrote:
> On Thu, May 24, 2018 at 2:56 PM, Jason Ekstrand <ja...@jlekstrand.net>
> wrote:
> > From: Francisco Jerez <curroje...@riseup.net>
> >
> > Reviewed-by: Jason Ekstrand <ja...@jlekstrand.net>
>
> Some small explanation that this is possible since we're able to rely
> on lower_simd_width() to do the hard work for us might be nice.
>
The original code manually handled splitting the MOVs to 8-wide to
handle various regioning restrictions. Now that we have a SIMD width
splitting pass that handles these things, we can just emit everything at
the full width and let the SIMD splitting pass handle it. We also now
have a useful "subscript" helper which is designed exactly for the case
where you want to take a W type and read it as a vector of Bs so we may
as well use that too.
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