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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/110669] [14 regression] ICE in
 gcc.dg/torture/pr105132.c since r14-2515-gb77161e60bce7b
Date: Mon, 17 Jul 2023 08:20:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110669

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:3228e5c078ed2b505e4ad238b09c1817b38f9cfb

commit r14-2559-g3228e5c078ed2b505e4ad238b09c1817b38f9cfb
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Jul 17 09:20:33 2023 +0200

    tree-optimization/110669 - bogus matching of loop bitop

    The matching code lacked a check that we end up with a PHI node
    in the loop header.  This caused us to match a random PHI argument
    now catched by the extra PHI_ARG_DEF_FROM_EDGE checking.

            PR tree-optimization/110669
            * tree-scalar-evolution.cc
(analyze_and_compute_bitop_with_inv_effect):
            Check we matched a header PHI.

            * gcc.dg/torture/pr110669.c: New testcase.=