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Subject: [Bug rtl-optimization/98601] [8/9/10/11 Regression] aarch64: ICE in
 rtx_addr_can_trap_p_1, at rtlanal.c:467
Date: Sat, 10 Apr 2021 10:47:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98601

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

https://gcc.gnu.org/g:7a493fcd27d6a1af896c4f5ef4ab1e0afe8a839d

commit r11-8106-g7a493fcd27d6a1af896c4f5ef4ab1e0afe8a839d
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Apr 10 12:46:09 2021 +0200

    rtlanal: Another fix for VOIDmode MEMs [PR98601]

    This is a sequel to the PR85022 changes, inline-asm can (unfortunately)
    introduce VOIDmode MEMs and in PR85022 they have been changed so that
    we don't pretend we know their size (as opposed to assuming they have
    zero size).

    This time we ICE in rtx_addr_can_trap_p_1 because it assumes that
    all memory but BLKmode has known size.  The patch just treats VOIDmode
    MEMs like BLKmode in that regard.  And, the STRICT_ALIGNMENT change
    is needed because VOIDmode has GET_MODE_SIZE of 0 and we don't want to
    check if something is a multiple of 0.

    2021-04-10  Jakub Jelinek  <jakub@redhat.com>

            PR rtl-optimization/98601
            * rtlanal.c (rtx_addr_can_trap_p_1): Allow in assert unknown si=
ze
            not just for BLKmode, but also for VOIDmode.  For STRICT_ALIGNM=
ENT
            unaligned_mems handle VOIDmode like BLKmode.

            * gcc.dg/torture/pr98601.c: New test.=