[Bug tree-optimization/84057] [8 Regression] ICE: Segmentation fault (in can_remove_branch_p)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84057

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 29 09:16:09 2018
New Revision: 257139

URL: https://gcc.gnu.org/viewcvs?rev=257139&root=gcc&view=rev
Log:
2018-01-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84057
        * tree-ssa-loop-ivcanon.c (unloop_loops): Deal with already
        removed paths when removing edges.

        * gcc.dg/graphite/pr84057.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr84057.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivcanon.c