[Bug 107510] [GEN8+] up to 10% perf drop on several 3D benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107510

Jason Ekstrand <jason at jlekstrand.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #6 from Jason Ekstrand <jason at jlekstrand.net> ---
I reverted the patch:

commit 10f44da775a69561c77438507298363ff4eeb65d
Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Wed Aug 8 12:00:55 2018 -0700

    Revert "intel/nir: Call nir_lower_io_to_scalar_early"

    Commit 4434591bf56a6b0 caused substantially more URB messages in
    geometry and tessellation shaders.  Before we can really enable this
    sort of optimization,  We either need some way of combining them back
    together into vectors or we need to do cross-stage vector element
    elimination without splitting everything into scalars.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107510
    Fixes: 4434591bf56a6 "intel/nir: Call nir_lower_io_to_scalar_early"
    Acked-by: Kenneth Graunke <kenneth at whitecape.org>
    Tested-by: Mark Janes <mark.a.janes at intel.com>

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