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Subject: [Bug tree-optimization/106063] [12/13 Regression] ICE: in
 gimple_expand_vec_cond_expr, at gimple-isel.cc:281 with -O2
 -fno-tree-forwprop --param=evrp-mode=legacy-first
Date: Fri, 08 Jul 2022 07:31:28 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106063

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org=
>:

https://gcc.gnu.org/g:f7854e2faf7640230062dec3596e71773ca500ed

commit r13-1573-gf7854e2faf7640230062dec3596e71773ca500ed
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Fri Jul 8 08:30:22 2022 +0100

    middle-end: don't lower past veclower [PR106063]

    Hi All,

    My previous patch can cause a problem if the pattern matches after vecl=
ower
    as it may replace the construct with a vector sequence which the target=
 may
not
    directly support.

    As such don't perform the rewriting if after veclower unless the target
supports
    the operation.  If before veclower do the rewriting as well if the targ=
et
didn't
    support the original operation either.

    gcc/ChangeLog:

            PR tree-optimization/106063
            * match.pd: Do not apply pattern after veclower is not supporte=
d.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/106063
            * gcc.dg/pr106063.c: New test.=