[Mesa-dev] [PATCH 17/22] nir: Narrow some dot product operations

[Matt Turner]

On Fri, Feb 23, 2018 at 3:56 PM, Ian Romanick <idr at freedesktop.org> wrote:
> From: Ian Romanick <ian.d.romanick at intel.com>
>
> On vector platforms, this helps elide some constant loads.
>
> No changes on Broadwell or Skylake.
>
> Haswell
> total instructions in shared programs: 13093793 -> 13060163 (-0.26%)
> instructions in affected programs: 1277532 -> 1243902 (-2.63%)
> helped: 13216
> HURT: 95

What's going on in the hurt shaders?