[Bug tree-optimization/92924] [10 regression] reproducible indirect call profile merging causes 80% slowdown in Firefox pref-reftest-singletons id-getter microbenchmarks

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92924

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Liska <mar...@gcc.gnu.org>:

https://gcc.gnu.org/g:5f32f9cf13f99f6295591927950aaf98aa8dba91

commit r10-6139-g5f32f9cf13f99f6295591927950aaf98aa8dba91
Author: Martin Liska <mli...@suse.cz>
Date:   Wed Jan 22 12:08:11 2020 +0100

    Smart relaxation of TOP N counter.

        PR tree-optimization/92924
        * profile.c (compute_value_histograms): Divide
        all counter values.
        PR tree-optimization/92924
        * libgcov-driver.c (prune_topn_counter): New.
        (prune_counters): Likewise.
        (dump_one_gcov): Prune a run-time counter.
        * libgcov-profiler.c (__gcov_topn_values_profiler_body):
        For a known value, add GCOV_TOPN_VALUES to value.
        Otherwise, decrement all counters by one.