[Bug tree-optimization/91568] internal compiler error: in vect_schedule_slp_instance, at tree-vect-slp.c:3922

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91568

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 29 08:07:35 2019
New Revision: 275023

URL: https://gcc.gnu.org/viewcvs?rev=275023&root=gcc&view=rev
Log:
2019-08-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91568
        * tree-vectorizer.h (_slp_tree::max_nunits): Add.
        (vect_update_max_nunits): Add overload for poly_uint64.
        * tree-vect-slp.c (vect_create_new_slp_node): Initialize it.
        (vect_build_slp_tree): Record max_nunits into the subtree
        and merge it upwards.
        (vect_print_slp_tree): Print max_nunits.

        * gfortran.dg/pr91568.f: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr91568.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-slp.c
    trunk/gcc/tree-vectorizer.h