[Bug 111251] [Regression][Bisected] dEQP GLES 3 tests crash with node_for_deref: Assertion `idx < parent->num_children' failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111251

            Bug ID: 111251
           Summary: [Regression][Bisected] dEQP GLES 3 tests crash with
                    node_for_deref: Assertion `idx < parent->num_children'
                    failed
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Keywords: bisected, regression
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: cwabbott0 at gmail.com
          Reporter: clayton.a.craft at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Full list of tests that crash can be found here:
   
https://mesa-ci.01.org/mesa_master/builds/17304/group/63a9f0ea7bb98050796b649e85481845#fails


Test output:
    Test case
'dEQP-GLES3.functional.transform_feedback.array.separate.points.lowp_mat4x2'..
    deqp-gles3: ../src/compiler/nir/nir_opt_find_array_copies.c:122:
node_for_deref: 
    Assertion `idx < parent->num_children' failed.


Bisected to the following commit:

commit 156306e5e62fb4fda0e829c5798fffdf7eb1907c
Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Tue Jun 18 12:12:49 2019 +0200

    nir/find_array_copies: Handle wildcards and overlapping copies

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