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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/113907] [11/12/13/14/15 regression] ICU miscompiled on x86
 since r14-5109-ga291237b628f41
Date: Tue, 14 May 2024 15:06:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113907

--- Comment #78 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Martin Jambor
<jamborm@gcc.gnu.org>:

https://gcc.gnu.org/g:1db45e83021a8a87f41e22053910fcce6e8e2c2c

commit r13-8774-g1db45e83021a8a87f41e22053910fcce6e8e2c2c
Author: Martin Jambor <mjambor@suse.cz>
Date:   Tue May 14 17:01:21 2024 +0200

    ipa: Compare jump functions in ICF (PR 113907)

    This is a manual backport of r14-9840-g1162861439fd3c from master.
    Manual because the bits and value range representation in jump
    functions have changes during the gcc 14 development cycle.

    In PR 113907 comment #58, Honza found a case where ICF thinks bodies
    of functions are equivalent but becaise of difference in aliases in a
    memory access, different aggregate jump functions are associated with
    supposedly equivalent call statements.  This patch adds a way to
    compare jump functions and plugs it into ICF to avoid the issue.

    gcc/ChangeLog:

    2024-05-14  Martin Jambor  <mjambor@suse.cz>

            PR ipa/113907
            * ipa-prop.h (ipa_jump_functions_equivalent_p): Declare.
            (values_equal_for_ipcp_p): Likewise.
            * ipa-prop.cc (ipa_agg_pass_through_jf_equivalent_p): New funct=
ion.
            (ipa_agg_jump_functions_equivalent_p): Likewise.
            (ipa_jump_functions_equivalent_p): Likewise.
            * ipa-cp.cc (values_equal_for_ipcp_p): Make function public.
            * ipa-icf-gimple.cc: Include alloc-pool.h, symbol-summary.h,
sreal.h,
            ipa-cp.h and ipa-prop.h.
            (func_checker::compare_gimple_call): Comapre jump functions.

    gcc/testsuite/ChangeLog:

    2024-05-10  Martin Jambor  <mjambor@suse.cz>

            PR ipa/113907
            * gcc.dg/lto/pr113907_0.c: New.
            * gcc.dg/lto/pr113907_1.c: Likewise.
            * gcc.dg/lto/pr113907_2.c: Likewise.=