[Bug tree-optimization/81462] [8 Regression] ICE in estimate_bb_frequencies at gcc/predict.c:3546

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81462

--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Tue Jul 18 13:49:30 2017
New Revision: 250310

URL: https://gcc.gnu.org/viewcvs?rev=250310&root=gcc&view=rev
Log:

        PR middle-end/81462
        * predict.c (set_even_probabilities): Cleanup; do not affect
        probabilities that are already known.
        (combine_predictions_for_bb): Call even when count is set.

        * g++.dg/torture/pr81462.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr81462.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/predict.c
    trunk/gcc/testsuite/ChangeLog