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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/96480] [8/9/10/11 Regression] missed
 optimisation: unnecessary compare in standard algorithms
Date: Wed, 05 Aug 2020 11:44:34 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96480

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Simplified testcase:
int v[4];

int
foo (int x)
{
  int *p;
  if (x =3D=3D 0)
    p =3D &v[0];
  else if (x =3D=3D 1)
    p =3D &v[1];
  else if (x =3D=3D 2)
    p =3D &v[2];
  else if (x =3D=3D 3)
    p =3D &v[3];
  else
    p =3D &v[4];
  return p !=3D &v[4];
}=