[Bug rtl-optimization/109187] [13 Regression] ICE: qsort checking failed: qsort comparator non-negative on sorted output: 1736258160 at -O2 since r13-5154-g733a1b777f16cd

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109187

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

https://gcc.gnu.org/g:fb046e69f0ed2d637ea715ae71ad50131f30cb2d

commit r13-6907-gfb046e69f0ed2d637ea715ae71ad50131f30cb2d
Author: Alexander Monakov <amona...@ispras.ru>
Date:   Tue Mar 28 16:00:37 2023 +0300

    haifa-sched: fix autopref_rank_for_schedule comparator [PR109187]

    Do not attempt to use a plain subtraction for generating a three-way
    comparison result in autopref_rank_for_schedule qsort comparator, as
    offsets are not restricted and subtraction may overflow.  Open-code
    a safe three-way comparison instead.

    gcc/ChangeLog:

            PR rtl-optimization/109187
            * haifa-sched.cc (autopref_rank_for_schedule): Avoid use of
overflowing
            subtraction in three-way comparison.

    gcc/testsuite/ChangeLog:

            PR rtl-optimization/109187
            * gcc.dg/pr109187.c: New test.