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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108816] [12 Regression] ICE in operator[], at
 vec.h:889
Date: Wed, 15 Mar 2023 09:48:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108816

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:02ff8c8ebcb7f9b0885946d17ff12523e7522b71

commit r12-9260-g02ff8c8ebcb7f9b0885946d17ff12523e7522b71
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Feb 20 10:59:15 2023 +0100

    tree-optimization/108816 - vect versioning check split confusion

    The split of the versioning condition assumes the definition is
    in the condition block which is ensured by the versioning code.
    But that only works when we actually have to insert any statements
    for the versioning condition.  The following adjusts the guard
    accordingly and asserts this condition.

            PR tree-optimization/108816
            * tree-vect-loop-manip.cc (vect_loop_versioning): Adjust
            versioning condition split prerequesite, assert required
            invariant.

            * gcc.dg/torture/pr108816.c: New testcase.

    (cherry picked from commit 63471c5008819bbf6ec32a6f4d8701fe57b96fa9)=