[Bug tree-optimization/87328] [9 Regression] ICE in do_rpo_vn, at tree-ssa-sccvn.c:6566

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87328

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep 17 13:28:04 2018
New Revision: 264369

URL: https://gcc.gnu.org/viewcvs?rev=264369&root=gcc&view=rev
Log:
2018-09-17  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87328
        * tree-ssa-sccvn.c (process_bb): Remove assertion about not
        visiting unexecutable backedges when not iterating.
        (do_rpo_vn): Mark all edges not executable even when not
        iterating.

        * gcc.dg/torture/pr87328.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr87328.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c