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 C9AF53858404; Mon,  8 Nov 2021 19:04:54 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C9AF53858404
From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/103121] [12 Regression] Warnings in
 cp/optimize.c causing build failure
Date: Mon, 08 Nov 2021 19:04:54 +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: 12.0
X-Bugzilla-Keywords: build, diagnostic
X-Bugzilla-Severity: normal
X-Bugzilla-Who: msebor 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: 12.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-103121-4-QJB6dUJ79a@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-103121-4@http.gcc.gnu.org/bugzilla/>
References: <bug-103121-4@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: Mon, 08 Nov 2021 19:04:54 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103121

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at gcc dot gnu.org

--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
The full IL for the function is below:

union tree_node * cdtor_comdat_group (union tree_node * complete, union
tree_node * base)
{
  size_t idx;
  bool diff_seen;
  const char * q;
  const char * p;
  char * grp_name;
  unsigned int _1;
  unsigned int _2;
  bool _3;
  unsigned int _4;
  char _6;
  char _8;
  bool _10;
  bool _11;
  char _14;
  unsigned char _15;
  unsigned char _16;
  bool _17;
  bool _19;
  bool _20;
  unsigned int _22;
  char * _23;
  const char * _26;
  union tree_node * _32;
  union tree_node * _35;
  union tree_node * _42;
  bool _50;
  bool _55;
  bool _56;

  <bb 2> [local count: 118111600]:
  _32 =3D decl_assembler_name (complete_30(D));
  _35 =3D decl_assembler_name (base_33(D));
  _1 =3D _32->identifier.id.len;
  _2 =3D _35->identifier.id.len;
  if (_1 !=3D _2)
    goto <bb 3>; [0.00%]
  else
    goto <bb 4>; [100.00%]

  <bb 3> [count: 0]:
  fancy_abort ("../../gcc/gcc/cp/optimize.c", 189, "cdtor_comdat_group");

  <bb 4> [local count: 118111600]:
  _4 =3D _1 + 1;
  grp_name_37 =3D __builtin_alloca (_4);
  p_38 =3D _32->identifier.id.str;
  q_39 =3D _35->identifier.id.str;
  if (_1 !=3D 0)
    goto <bb 16>; [89.00%]
  else
    goto <bb 12>; [11.00%]

  <bb 16> [local count: 105119324]:

  <bb 5> [local count: 955630225]:
  # diff_seen_54 =3D PHI <diff_seen_24(17), 0(16)>
  # idx_58 =3D PHI <idx_47(17), 0(16)>
  _6 =3D MEM[(const char *)p_38 + idx_58 * 1];
  _8 =3D MEM[(const char *)q_39 + idx_58 * 1];
  if (_6 =3D=3D _8)
    goto <bb 6>; [34.00%]
  else
    goto <bb 7>; [66.00%]

  <bb 6> [local count: 324914280]:
  MEM[(char *)grp_name_37 + idx_58 * 1] =3D _6;
  goto <bb 11>; [100.00%]

  <bb 7> [local count: 630715945]:
  _10 =3D idx_58 =3D=3D 0;
  _11 =3D _10 | diff_seen_54;
  if (_11 !=3D 0)
    goto <bb 9>; [0.00%]
  else
    goto <bb 8>; [100.00%]

  <bb 8> [local count: 630715945]:
  _26 =3D p_38 + 4294967295;
  _14 =3D MEM[(const char *)_26 + idx_58 * 1];
  _15 =3D (unsigned char) _14;
  _16 =3D _15 + 189;
  _17 =3D _16 > 1;
  _19 =3D _14 !=3D 73;
  _20 =3D _17 & _19;
  _3 =3D _6 !=3D 49;
  _56 =3D _8 !=3D 50;
  _50 =3D _56 | _3;
  _55 =3D _50 | _20;
  if (_55 !=3D 0)
    goto <bb 9>; [0.00%]
  else
    goto <bb 10>; [100.00%]

  <bb 9> [count: 0]:
  fancy_abort ("../../gcc/gcc/cp/optimize.c", 199, "cdtor_comdat_group");

  <bb 10> [local count: 630715945]:
  MEM[(char *)grp_name_37 + idx_58 * 1] =3D 53;

  <bb 11> [local count: 955630225]:
  # diff_seen_24 =3D PHI <diff_seen_54(6), 1(10)>
  idx_47 =3D idx_58 + 1;
  _22 =3D _32->identifier.id.len;
  if (_22 > idx_47)
    goto <bb 17>; [89.00%]
  else
    goto <bb 13>; [11.00%]

  <bb 17> [local count: 850510901]:
  goto <bb 5>; [100.00%]

  <bb 12> [local count: 12992276]:
  *grp_name_37 =3D 0;
  goto <bb 14>; [100.00%]

  <bb 13> [local count: 105119324]:
  _23 =3D grp_name_37 + idx_47;
  *_23 =3D 0;
  if (diff_seen_24 !=3D 0)
    goto <bb 15>; [100.00%]
  else
    goto <bb 14>; [0.00%]

  <bb 14> [count: 0]:
  fancy_abort ("../../gcc/gcc/cp/optimize.c", 209, "cdtor_comdat_group");

  <bb 15> [local count: 118111600]:
  _42 =3D get_identifier (grp_name_37);
  return _42;

}=