[Bug 109601] [Regression] RuneLite GPU rendering broken on 18.3.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109601

--- Comment #3 from Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com> ---
Thanks a lot for the apitrace files.
Bisected to :

commit 4dd5263663585b55119e49c8dfade015c86aff1a (refs/bisect/bad)
Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Tue Aug 14 14:37:39 2018 -0500

    nir/algebraic: Add more extract_[iu](8|16) optimizations

    This adds the "(a << N) >> M" family of mask or sign-extensions.  Not a
    huge win right now but this pattern will soon be generated by NIR format
    lowering code.

    Shader-db results on Kaby Lake:

        total instructions in shared programs: 15166918 -> 15166916 (<.01%)
        instructions in affected programs: 36 -> 34 (-5.56%)
        helped: 2
        HURT: 0

    Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

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