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Subject: [Bug tree-optimization/101809] emulated gather capability doesn't
 support 32-bit target
Date: Tue, 10 Aug 2021 10:25:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101809

--- Comment #5 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:08aa0e3d4f781fd6a6e293bb06d280365a0bdc1d

commit r12-2836-g08aa0e3d4f781fd6a6e293bb06d280365a0bdc1d
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Aug 10 10:54:58 2021 +0200

    tree-optimization/101809 - support emulated gather for double[int]

    This adds emulated gather support for index vectors with more
    elements than the data vector.  The internal function gather
    vectorization code doesn't currently handle this (but the builtin
    decl code does).  This allows vectorization of double data gather
    with int indexes on 32bit platforms where there isn't an implicit
    widening to 64bit present.

    2021-08-10  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/101809
            * tree-vect-stmts.c (get_load_store_type): Allow emulated
            gathers with offset vector nunits being a constant multiple
            of the data vector nunits.
            (vect_get_gather_scatter_ops): Use the appropriate nunits
            for the offset vector defs.
            (vectorizable_store): Adjust call to
            vect_get_gather_scatter_ops.
            (vectorizable_load): Likewise.  Handle the case of less
            offset vectors than data vectors.=