[Bug target/117278] [12/13/14/15 regression] Code at -Os is larger on trunk than GCC 11.4.0 since r12-6149-gdc1969dab39266

[dccitaliano at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117278

--- Comment #3 from Davide Italiano <dccitaliano at gmail dot com> ---
Another example that I found while looking at this:

int f(int* a) {
  int sum = *a;
  for (int i = 0; i < 10; i++) {
    if (i % 2 == 0 && (i > 3 || *a < 5)) {
      for (int j = 0; j < 5; j++) {
        if (j > 2 && sum > 0) {
          sum += i + j;
        }
        for (int k = 0; k < 3; k++) {
          if ((k * j) % 2 != 0 && i > 5) {
            sum -= k;
          }
          if (k > 1 && j < 4 && (sum % (i + 1)) == 0) {
            sum += k * j;
          }
        }
      }
    }
  }
  return sum;
}