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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/111338] ice in vn_walk_cb_data
Date: Fri, 08 Sep 2023 11:26:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111338

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly cleaned up, still -O1:

_BitInt(575) e;

int
main ()
{
  __atomic_fetch_and (&e, 1, __ATOMIC_RELAXED);
}

(otherwise you'd want the wb suffix on the large constant to avoid warning).

Or even
_BitInt(575) e;

_BitInt(575)
foo (void)
{
  return e & 1;
}

The problem is that push_partial_def uses a fixed size 512-bit buffer, for
larger stuff it fails and my PR93582 patch assumed it doesn't fail.=