[Bug tree-optimization/99825] [11 Regression] ICE in vect_build_combine_node

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99825

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org>:

https://gcc.gnu.org/g:9c68e2abe294a48385224cd7617eca0720144b5c

commit r11-7909-g9c68e2abe294a48385224cd7617eca0720144b5c
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Tue Mar 30 14:16:03 2021 +0100

    slp: reject non-multiple of 2 laned SLP trees (PR99825)

    TWO_OPERANDS allows any order or number of combinations of + and -
operations
    but the pattern matcher only supports pairs of operations.

    This patch has the pattern matcher for complex numbers reject SLP trees
where
    the lanes are not a multiple of 2.

    gcc/ChangeLog:

            PR tree-optimization/99825
            * tree-vect-slp-patterns.c (vect_check_evenodd_blend):
            Reject non-mult 2 lanes.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/99825
            * gfortran.dg/vect/pr99825.f90: New test.