[Bug rtl-optimization/71634] [4.9//5/6 Regression] Invalid write with in mark_loops_for_removal (ira-build.c:2256) with --param ira-max-loops-num=0

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71634

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Jul 18 12:57:25 2016
New Revision: 238429

URL: https://gcc.gnu.org/viewcvs?rev=238429&root=gcc&view=rev
Log:
Fix PR rtl-optimization/71634

        Backported from mainline
        2016-07-12  Martin Liska  <mli...@suse.cz>

        * ira-build.c (mark_loops_for_removal): Properly iterate
        loops.

Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/ira-build.c