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 C16343858C50; Tue, 18 Oct 2022 07:32:28 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C16343858C50
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1666078348;
	bh=5yuRg874BGw6H3WxQoixgxfcxRuIl9yC6W0Ci40ZRcw=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=fNLgzkqe6lZLyYFQFa8WPsBAWMQtnyG+SxVf0CcsJqyaBGJQjRVH2ZqlJrGsMXFSz
	 PLjfcBEpP3u960QvbD7lcpNl4qMzCa3IQSXbi7JgYdlELOmtfYdK2OHslEVf24xfyw
	 j7h+WPwsLNMjRa9QWZTF6f0I4Lj6SuGafMKLM9Hk=
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/107300] [13 Regression] ICE: verify_ssa failed (error:
 virtual definition of statement not up to date)
Date: Tue, 18 Oct 2022 07:32:28 +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: 13.0
X-Bugzilla-Keywords: ice-on-valid-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: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: component short_desc everconfirmed bug_status cc
 cf_reconfirmed_on target_milestone
Message-ID: <bug-107300-4-jkdLiJ6fKA@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-107300-4@http.gcc.gnu.org/bugzilla/>
References: <bug-107300-4@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=3D107300

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |ipa
            Summary|ICE: verify_ssa failed      |[13 Regression] ICE:
                   |(error: virtual definition  |verify_ssa failed (error:
                   |of statement not up to      |virtual definition of
                   |date)                       |statement not up to date)
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |marxin at gcc dot gnu.org
   Last reconfirmed|                            |2022-10-18
   Target Milestone|---                         |13.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  The unreachable doesn't have virtual operands but trap() should
have.  Oddly enough the abort is also replaced with trap!?

void bar.constprop ()
{
  int x;
  int y;

  <bb 7> [local count: 1073741824]:

  <bb 2> [local count: 1073741824]:
  if (0 !=3D 0)
    goto <bb 3>; [0.00%]
  else
    goto <bb 4>; [100.00%]

  <bb 3> [count: 0]:
  __builtin_trap ();

  <bb 4> [local count: 1073741824]:
  if (0 !=3D 0)
    goto <bb 5>; [0.00%]
  else
    goto <bb 6>; [100.00%]

  <bb 5> [count: 0]:
  # .MEM_2 =3D VDEF <.MEM_1(D)>
  __builtin_trap ();

  <bb 6> [local count: 1073741824]:
  # VUSE <.MEM_1(D)>
  return;

smells like a deeper regression in IPA (I suppose IPA CP marks stuff
unreachable and then we turn that into traps!?)=