[Bug tree-optimization/92742] [10 Regression] ICE in info_for_reduction, at tree-vect-loop.c:4367

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92742

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Dec  2 10:50:45 2019
New Revision: 278896

URL: https://gcc.gnu.org/viewcvs?rev=278896&root=gcc&view=rev
Log:
2019-12-02  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/92742
        * tree-vect-loop.c (vect_fixup_reduc_chain): Do not
        touch the def-type but verify it is consistent with the
        original stmts.

        * gcc.dg/torture/pr92742.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr92742.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c