[Bug 75253] Unigine engine regression (GM 45)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75253

Kenneth Graunke <kenneth at whitecape.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|idr at freedesktop.org         |kenneth at whitecape.org

--- Comment #1 from Kenneth Graunke <kenneth at whitecape.org> ---
That's really bad.  We shouldn't ever emit LRPs on Gen4-5...doing so will
assert in a debug build, or GPU hang in release builds...

I bisected this down to:

8d37e9915a3b21b496269a39f677a80a6e02cb2c is the first bad commit
commit 8d37e9915a3b21b496269a39f677a80a6e02cb2c
Author: Jordan Justen <jordan.l.justen at intel.com>
Date:   Mon Nov 4 10:23:24 2013 -0800

    glsl: Optimize open-coded lrp into lrp.

    total instructions in shared programs: 1498191 -> 1487051 (-0.74%)
    instructions in affected programs:     669388 -> 658248 (-1.66%)
    GAINED:                                1
    LOST:                                  0

    Reviewed-by: Matt Turner <mattst88 at gmail.com>
    Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>

:040000 040000 23c11446b747e8a3d28c9f75f4d64489d8d5fa34
71ca8cf51fe2af6a95516a27599eb5f5d73c5925 M       src

(it was a bit tricky since I had to sort out the interim vectorizer breakage)

Will fix ASAP.

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