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 9EEC33858416; Thu, 16 Mar 2023 23:25:59 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9EEC33858416
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1679009159;
	bh=HjAfW4NsPiXWfsQdSwYLQbhYc3jYzHBp+cnoTXeWKfU=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=Hsws6N+8ihJZxqa6UxSj1bD0efEq4SeFVwA8RVPVeos6jm/f7I1OA5QYUhjDyvr7m
	 m1piV9JRpop5OFGepHBYYuNwh8IeWV8Yd5l4s47XU/m9GP0mQEDUJ+Ip6zz/YXh75j
	 3qGE//BErTs+zNWLVaIt6ptajTM9wKMIDhVmzJ3s=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109164] thread_local initialization error
 with -ftree-pre
Date: Thu, 16 Mar 2023 23:25:59 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 12.1.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: short_desc cf_known_to_fail
Message-ID: <bug-109164-4-gXtwBdKquK@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109164-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109164-4@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
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109164

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|thread_local initialization |thread_local initialization
                   |error with -ftree-pre       |error with -ftree-pre
                   |-foptimize-sibling-calls    |
      Known to fail|                            |11.3.0

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a testcase which fails at `-O1 -ftree-pre` and does not need
`-foptimize-sibling-calls`:
struct Struct  {
  virtual void virtual_func();
};
extern thread_local Struct& thread_local_ref;
bool other_func(void);
bool test_func(void)
{
  while (1)
    {
      thread_local_ref.virtual_func();
      if (!other_func())
        return 0;
    }
}=