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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/107447] [13 Regression] ICE: verify_flow_info
 failed (error: returns_twice call is not first in basic block 2)
Date: Fri, 28 Oct 2022 13:07:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107447

--- Comment #3 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:1add3635563b39e3c0e9bed4930d11b3f605fdd3

commit r13-3545-g1add3635563b39e3c0e9bed4930d11b3f605fdd3
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Oct 28 14:20:36 2022 +0200

    tree-optimization/107447 - avoid hoisting returns-twice calls in LIM

    The following makes sure to not hoist returns-twice calls in LIM
    since we have no way to move the abnormal edge associated with it
    and we are prone having stray abnormal edges in the IL which will
    then cause IL verification failures even when the actual call
    does not return twice.

            PR tree-optimization/107447
            * tree-ssa-loop-im.cc (determine_max_movement): Do not
            hoist returns-twice calls.

            * gcc.dg/torture/pr107447.c: New testcase.=