[Bug tree-optimization/71521] [6/7 Regression] Regression in GCC-7.0.0's optimizer

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71521

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jun 14 07:22:04 2016
New Revision: 237425

URL: https://gcc.gnu.org/viewcvs?rev=237425&root=gcc&view=rev
Log:
2016-06-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71521
        * tree-vrp.c (extract_range_from_binary_expr_1): Guard
        division int_const_binop against zero divisor.

        * gcc.dg/tree-ssa/vrp101.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp101.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c