[Bug tree-optimization/87931] [9 Regression] ICE in vectorizable_reduction, at tree-vect-loop.c:6193 since r265876

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87931

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Nov 13 15:07:53 2018
New Revision: 266075

URL: https://gcc.gnu.org/viewcvs?rev=266075&root=gcc&view=rev
Log:
2018-11-13  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/87931
        * tree-vect-loop.c (vect_is_simple_reduction): Restrict
        nested cycles we support to latch computations vectorizable_reduction
        handles.

        * gcc.dg/graphite/pr87931.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr87931.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c