[Bug ipa/123412] [16 Regression] g++-dg-lto-devirt-2-01.exe and g++.dg/ipa/devirt-2.C since r16-3990-gad3fb999a1b568

cvs-commit at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri Jan 16 11:06:49 GMT 2026


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123412

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Jambor <jamborm@gcc.gnu.org>:

https://gcc.gnu.org/g:54d98b104420363d8109aee1bb275f4567c756f0

commit r16-6818-g54d98b104420363d8109aee1bb275f4567c756f0
Author: Martin Jambor <mjambor@suse.cz>
Date:   Fri Jan 16 12:04:23 2026 +0100

    ipa-cp: Fix devirt bonus for targets that cannot be inlined

    PR 123412 has been filed because since commit
    r16-3990-gad3fb999a1b568 (Jan Hubicka: Improve ipa-cp devirtualization
    costing), there is accidentally zero devirtualization bonus for
    functions which cannot be inlined.  This has resulted in
    g++.dg/ipa/devirt-2.C failing since it has been pushed because the
    required function is not cloned even with --param max-devirt-targets=1.

    The intention was that we do get at least some small benefit boost and
    so this patch adds an addition of the indirect edge frequency once
    before the early continue statements.

    gcc/ChangeLog:

    2026-01-14  Martin Jambor  <mjambor@suse.cz>

            PR ipa/123412
            * ipa-cp.cc (devirtualization_time_bonus): Do add the indirect
            edge frequency at least once even for targets which cannot be
            inlined.


More information about the Gcc-bugs mailing list