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Subject: [Bug tree-optimization/102046] [10/11 Regression] ICE: tree check:
 expected class 'type', have 'exceptional' (error_mark) in
 useless_type_conversion_p, at gimple-expr.c:87 with -O3 -march=btver2 since
 r12-1372-ga325bdd195ee96f8
Date: Mon, 06 Sep 2021 08:50:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102046

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:57f6800aefdd102cd43f0df53ca8bcbcc7202b41

commit r11-8966-g57f6800aefdd102cd43f0df53ca8bcbcc7202b41
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Aug 25 10:06:01 2021 +0200

    tree-optimization/102046 - fix SLP build from scalars with patterns

    When we swap operands for SLP builds we lose track where exactly
    pattern defs are - but we fail to update the any_pattern member
    of the operands info.  Do so conservatively.

    2021-08-25  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/102046
            * tree-vect-slp.c (vect_build_slp_tree_2): Conservatively
            update ->any_pattern when swapping operands.

            * gcc.dg/vect/pr102046.c: New testcase.

    (cherry picked from commit 29c77454e5ab33ce06a741eacdfbd5348fbccc95)=