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Subject: [Bug rtl-optimization/98601] [8/9 Regression] aarch64: ICE in
 rtx_addr_can_trap_p_1, at rtlanal.c:467
Date: Thu, 22 Apr 2021 16:52:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98601

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:b7cac48e100fc70d361ce98be27f209659c4b0e9

commit r8-10905-gb7cac48e100fc70d361ce98be27f209659c4b0e9
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.

    (cherry picked from commit e68ac8c2b46997af1464f2549ac520a192c928b1)=