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Date: Mon, 20 Sep 2021 07:12:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100520

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|aarch64, x86_64             |
           Severity|normal                      |major
          Component|debug                       |gcov-profile
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> -  __gcov_indirect_call_profiler_v4 (1387117561, f);
> +  __gcov_indirect_call_profiler_v4 (983609665, f);

  tree_uid =3D build_int_cst
              (gcov_type_node,
               cgraph_node::get (current_function_decl)->profile_id);


profile_id is computed in coverage_compute_profile_id.
Which has:

      chksum =3D coverage_checksum_string
        (chksum, aux_base_name);


The problem is with -fcompare-debug the aux_base_name is different.
Hmm, this code for coverage_compute_profile_id has not changed.  Maybe the =
use
of the profile id has changed though.=