[Bug 109216] 4-27% performance drop in Vulkan benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109216

--- Comment #4 from Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com> ---
Bisected to :

commit 8fb8ebfbb05d3323481c8ba6d320b3a3580bad99
Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Tue May 22 18:56:41 2018 -0700

    intel/compiler: More peephole select

    Shader-db results:

    The one shader hurt for instructions is a compute shader that had both
    spills and fills hurt.

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