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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107833] [12/13 Regression] wrong code at -Os
 and above on x86_64-linux-gnu since r12-5138-ge82c382971664d6f
Date: Thu, 01 Dec 2022 16:14:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107833

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

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

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
printf isn't needed, -O2:
int a, b[1] =3D { 0 }, c, *d =3D b, e, *f, g;

__attribute__((noipa)) int
foo (const char *x)
{
  (void) x;
  return 0;
}

int
main ()
{
  for (int h =3D 0; a < 2; a++)
    {
      int i;
      for (g =3D 0; g < 2; g++)
        if (a < h)
          {
            e =3D i % 2;
            c =3D *f;
          }
      for (h =3D 0; h < 3; h++)
        {
          if (d)
            break;
          i--;
          foo ("0");
        }
    }
  return 0;
}

is miscompiled as well.=