[Mesa-dev] [RFC PATCH 1/2] glsl: Transform pow(x, 4) into (x*x)*(x*x).

[Jason Ekstrand]

On Fri, Apr 17, 2015 at 2:05 PM, Matt Turner <mattst88 at gmail.com> wrote:
> On Fri, Apr 17, 2015 at 2:02 PM, Jason Ekstrand <jason at jlekstrand.net> wrote:
>> What made the difference here?
>
> I think it's probably just that
>
> commit 4dacb212fdcc82def02b8c9233f94caa5a8a3000
> Author: Matt Turner <mattst88 at gmail.com>
> Date:   Thu Apr 2 10:21:16 2015 -0700
>
>     nir: Allow abs/neg in select peephole pass.
>
>     total instructions in shared programs: 4314531 -> 4308949 (-0.13%)
>     instructions in affected programs:     429085 -> 423503 (-1.30%)
>     helped:                                1680
>     HURT:                                  0
>     GAINED:                                0
>     LOST:                                  111
>
>     Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>
>
> lost all of the SIMD16 programs that this commit was losing. :)

LOL.  Probably...