[Bug tree-optimization/87693] ICE in thread_around_empty_blocks, at tree-ssa-threadedge.c:984

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87693

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Oct 23 08:51:20 2018
New Revision: 265413

URL: https://gcc.gnu.org/viewcvs?rev=265413&root=gcc&view=rev
Log:
2018-10-23  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/87693
        * tree-ssa-threadedge.c (thread_around_empty_blocks): Handle
        the case we do not find the taken edge.

        * gcc.dg/torture/pr87693.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr87693.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-threadedge.c