[Bug tree-optimization/91145] [9 Regression] ICE: in vect_build_slp_tree_2, at tree-vect-slp.c:1143 with -march=skylake-avx512 -O3

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91145

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 12 14:36:50 2019
New Revision: 273445

URL: https://gcc.gnu.org/viewcvs?rev=273445&root=gcc&view=rev
Log:
2019-07-12  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/91145
        * tree-vect-slp.c (vect_build_slp_tree_2): Fix reduction
        chain check.

        * gcc.dg/torture/pr91145.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr91145.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-slp.c