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Subject: [Bug tree-optimization/106923] [13 Regression] ICE in
 eliminate_unnecessary_stmts, at tree-ssa-dce.cc:1512 since
 r13-2518-ga262f969d6fd936f
Date: Tue, 07 Feb 2023 09:35:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106923

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:5321d53279a60ee589a3c9779beb46503f9fc49f

commit r13-5728-g5321d53279a60ee589a3c9779beb46503f9fc49f
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Feb 7 10:34:45 2023 +0100

    ipa-split: Don't split returns_twice functions [PR106923]

    As discussed in the PR, returns_twice functions are rare/special beasts
    that need special treatment in the cfg, and inside of their bodies
    we don't know which part actually works the weird returns twice way
    (either in the fork/vfork sense, or in the setjmp) and aren't updating
    ab edges to reflect that.

    I think easiest is just to never split these, like we already never
    split noreturn or malloc functions.

    2023-02-07  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/106923
            * ipa-split.cc (execute_split_functions): Don't split returns_t=
wice
            functions.

            * gcc.dg/pr106923.c: New test.=