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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113205] [14 Regression] internal compiler error: in
 backward_pass, at tree-vect-slp.cc:5346 since r14-3220
Date: Mon, 08 Jan 2024 17:17:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113205

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
           Keywords|needs-bisection,            |
                   |needs-reduction             |
            Summary|[14 Regression] internal    |[14 Regression] internal
                   |compiler error: in          |compiler error: in
                   |backward_pass, at           |backward_pass, at
                   |tree-vect-slp.cc:5346       |tree-vect-slp.cc:5346 since
                   |                            |r14-3220
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-01-08

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
char a;
char *b, *c;
int d, e, f, g, h;
int *i;

void
foo (void)
{
  unsigned p;
  d =3D i[0];
  e =3D i[1];
  f =3D i[2];
  g =3D i[3];
  p =3D d * b[0];
  p +=3D f * c[h];
  p +=3D e * b[h];
  p +=3D g * c[h];
  a =3D (p + 8000) >> (__SIZEOF_INT__ * __CHAR_BIT__ / 2);
}
is reduced from mlt, ICEs at -O2 since
r14-3220-gf049868d8db773da4be61d82025e97453d6e9f2b.=