[Bug tree-optimization/98113] [11 Regression] popcnt is not vectorized on s390 since f5e18dd9c7da

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98113

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:ebdfd1606da6b5aa586b0cd156b69b659235c9c2

commit r11-5821-gebdfd1606da6b5aa586b0cd156b69b659235c9c2
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Dec 3 10:25:14 2020 +0100

    tree-optimization/98113 - vectorize a sequence of BIT_INSERT_EXPRs

    This adds the capability to handle a sequence of vector BIT_INSERT_EXPRs
    to be vectorized similar as to how we vectorize vector constructors.

    2020-12-03  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/98113
            * tree-vectorizer.h (struct slp_root): New.
            (_bb_vec_info::roots): New member.
            * tree-vect-slp.c (vect_analyze_slp): Also walk BB info
            roots.
            (_bb_vec_info::_bb_vec_info): Adjust.
            (_bb_vec_info::~_bb_vec_info): Likewise.
            (vld_cmp): New.
            (vect_slp_is_lane_insert): Likewise.
            (vect_slp_check_for_constructors): Match a series of
            BIT_INSERT_EXPRs as vector constructor.
            (vect_slp_analyze_bb_1): Continue if BB info roots is
            not empty.
            (vect_slp_analyze_bb_1): Mark the whole BIT_INSERT_EXPR root
            sequence as pure_slp.

            * gcc.dg/vect/bb-slp-70.c: New testcase.