[Bug rtl-optimization/79388] [6/7 Regression] wrong code with -O -fno-tree-coalesce-vars

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79388

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Another testcase from the other PR (-O):
unsigned int
foo (unsigned char x, unsigned long long y)
{
  do
    {
      x &= !y;
      x %= 24;
    }
  while (x < y);
  return x + y;
}

int
main (void)
{
  unsigned int x = foo (1, 0);
  if (x != 1)
    __builtin_abort ();
  return 0;
}