[Bug tree-optimization/71398] [7 Regression] ICE at -O3 in 32-bit and 64-bit mode on x86_64-linux-gnu (Segmentation fault, find_edge)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71398

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jun  6 06:55:19 2016
New Revision: 237117

URL: https://gcc.gnu.org/viewcvs?rev=237117&root=gcc&view=rev
Log:
2016-06-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71398
        * tree-ssa-loop-ivcanon.c (unloop_loops): First unloop, then
        remove edges.

        * gcc.dg/torture/pr71398.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr71398.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivcanon.c