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 033FD3858433; Mon,  7 Aug 2023 16:07:11 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 033FD3858433
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1691424432;
	bh=wY4ew2ypeuV8XN7Rck4cfeAea2NwhBL9lSovqVemjkI=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=heRsyGiTKhiuqkuOkhDYNKwoZnyphvxdW+VYMd4/6GJGmSa0EMw2FW7zgcsr6NSvG
	 RAA50kV47RKM5R+pCZTBEp55JEwkDNOVrsUjCwlcKe765HJMPr36HKgTPkzX8Z37eO
	 yCTg+juHCTJbBCeS8rYDDspEUO4kpe6LfnuDTPGc=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/110931] [14 Regression] Dead Code Elimination
 Regression since r14-2890-gcc2003cd875
Date: Mon, 07 Aug 2023 16:07:11 +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: 14.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia 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: 14.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-110931-4-tWNFkI5NcL@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-110931-4@http.gcc.gnu.org/bugzilla/>
References: <bug-110931-4@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=3D110931

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is one that has always failed due to a similar issue where the inner c=
ast
was removed:
```
void foo(void);
int l=3D1000;

int main(void)
{
  short t =3D l;
  int t1 =3D t;
  if (t1 =3D=3D 0) {
    signed char b =3D t1;
    if (b !=3D 1) __builtin_unreachable();
    foo();
  }
}
```=