[Bug tree-optimization/88427] [9 Regression] ICE: tree check: expected integer_cst, have plus_expr in get_len, at tree.h:5617

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88427

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Dec 10 13:56:51 2018
New Revision: 266955

URL: https://gcc.gnu.org/viewcvs?rev=266955&root=gcc&view=rev
Log:
2018-12-10  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/88427
        * vr-values.c (vr_values::extract_range_from_phi_node):
        Handle symbolic ranges conservatively when trying to drop
        to Inf +- 1.

        * gcc.dg/pr88427.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr88427.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/vr-values.c