[Bug middle-end/91267] [10 regression] SEGV in value_range_base::equal_p

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91267

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jul 29 10:10:15 2019
New Revision: 273874

URL: https://gcc.gnu.org/viewcvs?rev=273874&root=gcc&view=rev
Log:
2019-07-29  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/91267
        * vr-values.c (vr_values::update_value_range): Add early return
        for effectively VARYING lattice entry.

        * gcc.dg/torture/pr91267.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr91267.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/vr-values.c