[Bug tree-optimization/69347] [6 regression] excessive compile time with -O2

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347

--- Comment #15 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Jan 22 20:18:59 2016
New Revision: 232745

URL: https://gcc.gnu.org/viewcvs?rev=232745&root=gcc&view=rev
Log:
        PR middle-end/69347
        * tree-ssa-dom.c (back_propagate_equivalences): Factored out of
        record_temporary_equivalences.  Rewritten to avoid unnecessary calls
        into dominated_by_p.
        (cprop_into_successor_phis): Avoid unnecessary tests.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-dom.c