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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/112505] [12/13/14 Regression]  internal
 compiler error: in build_vector_from_val, at tree.cc:2104
Date: Mon, 13 Nov 2023 06:10:02 +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: ice-on-valid-code, needs-bisection
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: NEW
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X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.4
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112505

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |11.1.0, 11.4.0
           Keywords|                            |ice-on-valid-code,
                   |                            |needs-bisection
     Ever confirmed|0                           |1
      Known to fail|                            |12.1.0
   Target Milestone|---                         |12.4
            Summary|GCC: 14: internal compiler  |[12/13/14 Regression]
                   |error: in                   |internal compiler error: in
                   |build_vector_from_val, at   |build_vector_from_val, at
                   |tree.cc:2104                |tree.cc:2104
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-11-13
          Component|c                           |tree-optimization

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Simplier testcase:
```
short int w9;
struct T {
  short a : 14;
  int b;
};
struct T v;
void zc() {
        for(int i =3D 0; i < 4; i ++)
  w9 *=3D v.b ? v.a-- < 0 : 0;
}
```
Just compiler at `-O3 -fno-vect-cost-model`

  <unnamed-unsigned:14> _30;
  vector(4) unsigned short _31;
...
  _31 =3D {_60, _59, _2, _30};
  _52 =3D (vector(4) signed short) _31;=