From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 3E1F3385500B; Wed,  7 Jul 2021 06:50:42 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3E1F3385500B
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/101354] [11/12 regression] naked function mishandled -
 store optimized away
Date: Wed, 07 Jul 2021 06:50:42 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: ipa
X-Bugzilla-Version: 11.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.2
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-101354-4-fqDgyrnU7J@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-101354-4@http.gcc.gnu.org/bugzilla/>
References: <bug-101354-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 07 Jul 2021 06:50:42 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101354

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OTOH decl-attributes.c has generic code doing

  /* A "naked" function attribute implies "noinline" and "noclone" for
     those targets that support it.  */
  if (TREE_CODE (*node) =3D=3D FUNCTION_DECL
      && attributes
      && lookup_attribute ("naked", attributes) !=3D NULL
      && lookup_attribute_spec (get_identifier ("naked")))
    {
      if (lookup_attribute ("noinline", attributes) =3D=3D NULL)
        attributes =3D tree_cons (get_identifier ("noinline"), NULL, attrib=
utes);

      if (lookup_attribute ("noclone", attributes) =3D=3D NULL)
        attributes =3D tree_cons (get_identifier ("noclone"),  NULL, attrib=
utes);
    }

maybe we should simply add "noipa" and eventually also "used" to it ... (if
that's enough)=