[Bug tree-optimization/96480] [8/9/10/11 Regression] missed optimisation: unnecessary compare in standard algorithms

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96480

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

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