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Subject: [Bug middle-end/99007] [8/9/10 Regression] ICE in dominated_by_p, at
 dominance.c:1124
Date: Fri, 19 Mar 2021 23:28:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99007

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:deba6b20a3889aa23f0e4b3a5248de4172a0167d

commit r10-9465-gdeba6b20a3889aa23f0e4b3a5248de4172a0167d
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Feb 10 10:34:58 2021 +0100

    openmp: Temporarily disable into_ssa when gimplifying OpenMP reduction
clauses [PR99007]

    gimplify_scan_omp_clauses was already calling gimplify_expr with false =
as
    last argument to make sure it is not an SSA_NAME, but as the testcases
show,
    that is not enough, SSA_NAME temporaries created during that gimplifica=
tion
    can be reused too and we can't allow SSA_NAMEs to be used across OpenMP
    region boundaries, as we can only firstprivatize decls.

    Fixed by temporarily disabling into_ssa.

    2021-02-10  Jakub Jelinek  <jakub@redhat.com>

            PR middle-end/99007
            * gimplify.c (gimplify_scan_omp_clauses): For MEM_REF on
reductions,
            temporarily disable gimplify_ctxp->into_ssa around gimplify_expr
            calls.

            * g++.dg/gomp/pr99007.C: New test.
            * gcc.dg/gomp/pr99007-1.c: New test.
            * gcc.dg/gomp/pr99007-2.c: New test.
            * gcc.dg/gomp/pr99007-3.c: New test.

    (cherry picked from commit bd0e37f68a3aed944df4eb739a0734bb87153749)=