[Bug rtl-optimization/115049] [14/15 Regression] Silent severe miscompilation around inline functions

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115049

--- Comment #18 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jonathan Yong
<jyong@gcc.gnu.org>:

https://gcc.gnu.org/g:2c5f48a43f26223cb8603b826d7c0d52cdbcfb46

commit r12-10625-g2c5f48a43f26223cb8603b826d7c0d52cdbcfb46
Author: LIU Hao <lh_mouse@126.com>
Date:   Mon Jul 15 16:55:52 2024 +0800

    Do not use caller-saved registers for COMDAT functions

    A reference to a COMDAT function may be resolved to another definition
    outside the current translation unit, so it's not eligible for `-fipa-ra`.

    In `decl_binds_to_current_def_p()` there is already a check for weak
    symbols. This commit checks for COMDAT functions that are not implemented
    as weak symbols, for example, on *-*-mingw32.

    gcc/ChangeLog:

            PR rtl-optimization/115049
            * varasm.cc (decl_binds_to_current_def_p): Add a check for COMDAT
            declarations too, like weak ones.

    (cherry picked from commit 5080840d8fbf25a321dd27543a1462d393d338bc)