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Subject: [Bug middle-end/106982] [10/11/12/13 Regression][OpenACC] ICE
 incorrect sharing of tree nodes with nested reduction / .GOACC_REDUCTION
Date: Thu, 29 Sep 2022 11:48:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106982

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Tobias Burnus
<burnus@gcc.gnu.org>:

https://gcc.gnu.org/g:afea1ae84f0c3e64137289c44c756195babe1845

commit r12-8793-gafea1ae84f0c3e64137289c44c756195babe1845
Author: Tobias Burnus <tobias@codesourcery.com>
Date:   Mon Sep 26 12:45:28 2022 +0200

    OpenACC: Fix reduction tree-sharing issue [PR106982]

    The tree for var =3D=3D incoming =3D=3D outgound was
    'MEM <double[5]> [(double *)&reduced]' which caused the ICE
    "incorrect sharing of tree nodes".

            PR middle-end/106982

    gcc/ChangeLog:

            * omp-low.cc (lower_oacc_reductions): Add some unshare_expr.

    gcc/testsuite/ChangeLog:

            * c-c++-common/goacc/reduction-7.c: New test.
            * c-c++-common/goacc/reduction-8.c: New test.

    (cherry picked from commit d3df98807b58df186061ad52ff87cc09ba593e9b)=