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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/94614] ICE in emit_move_multi_word, at expr.c:3716
Date: Thu, 16 Apr 2020 10:55:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94614

--- Comment #6 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:eafeba3e5187a53a4c08a3285b4b220e1ab68b60

commit r10-7753-geafeba3e5187a53a4c08a3285b4b220e1ab68b60
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Apr 16 09:37:44 2020 +0200

    middle-end/94614 - avoid multiword moves to nothing

    This adjusts emit_move_multi_word to handle moves into paradoxical
    subregs parts that are not there and adjusts lower-subregs
    CLOBBER resolving to deal with those as well.

    2020-04-16  Richard Biener  <rguenther@suse.de>

            PR middle-end/94614
            * expr.c (emit_move_multi_word): Do not generate code when
            the destination part is undefined_operand_subword_p.
            * lower-subreg.c (resolve_clobber): Look through a paradoxica
            subreg.=