[Bug bootstrap/82916] [8 regression] gcc miscompiled during stagefeedback (PGO bootstrap)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82916

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 10 10:31:34 2017
New Revision: 254623

URL: https://gcc.gnu.org/viewcvs?rev=254623&root=gcc&view=rev
Log:
        PR bootstrap/82916
        * gimple-ssa-store-merging.c
        (pass_store_merging::terminate_all_aliasing_chains): For
        gimple_store_p stmts also call refs_output_dependent_p.

        * gcc.dg/store_merging_2.c: Only expect 2 successful mergings instead
        of 3.
        * gcc.dg/pr82916.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr82916.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/store_merging_2.c