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 41EE03858D38; Mon, 11 Sep 2023 16:59:57 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 41EE03858D38
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1694451597;
	bh=UIMQVbRYS/xk+gZfj3F+jTZxwJbnNnrz8D+iF+N2zYc=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=Os3t4yJqo6khNKesmhpd2f9zjgRikxTBt6qrEsUq5xb3pHAQmsyEmMfaustAHI45F
	 Hlu0fQ9G/SHbni2fQJ12zTpIzehbHYUoTmo9WYKhZ1K0rasdrqHYrEdrsBdruTaZkC
	 zA3q8qUKhyYZJ6AWDBQc/yEkhSEgMMsKotxKpe6g=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/111373] conditional selection gives bad code
 generation
Date: Mon, 11 Sep 2023 16:59:57 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-111373-4-mKlF851jq5@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-111373-4@http.gcc.gnu.org/bugzilla/>
References: <bug-111373-4@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=3D111373

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually this is what we have before expand:
```
  if (_2 > _5)
    goto <bb 8>; [50.00%]
  else
    goto <bb 3>; [50.00%]
...
  if (v$2_7 < v$1_28)
    goto <bb 7>; [33.33%]
  else
    goto <bb 6>; [66.67%]

  <bb 6> [local count: 536870910]:

  <bb 7> [local count: 1073741824]:
  # a$1_18 =3D PHI <a$1_30(6), a$2_19(5), _3(8)>
  # a$2_20 =3D PHI <a$2_19(6), a$1_30(5), _1(8)>
  # a$0_29 =3D PHI <a$0_16(6), a$0_16(5), _6(8)>
  *p_12(D) =3D a$0_29;
  MEM[(long int * *)p_12(D) + 8B] =3D a$1_18;
  MEM[(long int * *)p_12(D) + 16B] =3D a$2_20;
  return;

  <bb 8> [local count: 536870912]:
  if (_5 > _8)
    goto <bb 7>; [50.00%]
  else
    goto <bb 5>; [50.00%]
```

Anyways there is another bug dealing with phi and expansion somewhere=