[Bug tree-optimization/82129] [8 Regression] ICE in compute_antic, at tree-ssa-pre.c:2447

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82129

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Oct 23 09:20:14 2017
New Revision: 253998

URL: https://gcc.gnu.org/viewcvs?rev=253998&root=gcc&view=rev
Log:
2017-10-23  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/82129
        * tree-ssa-pre.c (bitmap_set_and): Remove.
        (compute_antic_aux): Compute ANTIC_OUT intersection in a way
        canonicalizing expressions in the set to those with lowest
        ID rather than taking that from the first edge.

        * gcc.dg/torture/pr82129.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr82129.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c