[Bug rtl-optimization/108774] [13 Regression] ICE: in get_equiv, at lra-constraints.cc:534 with -Os -ftrapv -mcmodel=large

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108774

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Vladimir Makarov <vmaka...@gcc.gnu.org>:

https://gcc.gnu.org/g:a33e3dcbd15e73603796e30b5eeec11a0c8bacec

commit r13-5971-ga33e3dcbd15e73603796e30b5eeec11a0c8bacec
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date:   Mon Feb 13 16:05:04 2023 -0500

    RA: Clear reg equiv caller_save_p flag when clearing defined_p flag

    IRA can invalidate initially setup equivalence in setup_reg_equiv.
    Flag caller_saved was not cleared during invalidation although
    init_insns were cleared.  It resulted in segmentation fault in
    get_equiv.  Clearing the flag solves the problem.  For more
    precaution I added clearing the flag in other places too although it
    might be not necessary.

            PR rtl-optimization/108774

    gcc/ChangeLog:

            * ira.cc (ira_update_equiv_info_by_shuffle_insn): Clear equiv
            caller_save_p flag when clearing defined_p flag.
            (setup_reg_equiv): Ditto.
            * lra-constraints.cc (lra_constraints): Ditto.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr108774.c: New.