[Bug tree-optimization/81181] [7/8 Regression] ICE in compute_antic, at tree-ssa-pre.c:2410

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81181

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Aug  1 13:36:50 2017
New Revision: 250777

URL: https://gcc.gnu.org/viewcvs?rev=250777&root=gcc&view=rev
Log:
2017-08-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81181
        * tree-ssa-pre.c (compute_antic_aux): Defer clean() to ...
        (compute_antic): ... end of iteration here.

        * gcc.dg/torture/pr81181.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr81181.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c