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From: "rth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/107389] Always propagate __builtin_assume_aligned
Date: Wed, 26 Oct 2022 08:15:04 +0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 12.2.1
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: rth at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107389

Richard Henderson <rth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
            Summary|Alignment not inferred from |Always propagate
                   |type at -O0                 |__builtin_assume_aligned
            Version|unknown                     |12.2.1
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-10-26
           Severity|normal                      |enhancement

--- Comment #4 from Richard Henderson <rth at gcc dot gnu.org> ---
Rename and re-categorise as enhancement.

As mentioned, in comments above, need to
be able to rely on __builtin_assume_aligned
even with -O0 to avoid link errors when
not including libatomic.=