1  // clang -gdwarf-5 -O2 -nostdlib
       2  
       3  __attribute__((noinline, cold))
       4  static int sum(int i) {
       5    int j, s;
       6  
       7    s = 0;
       8    for (j = 0; j < i; j++) {
       9      s += j * i;
      10    }
      11    return s;
      12  }
      13  
      14  int main(int argc, char** argv) {
      15    if (argc == 0) {
      16      return 0;
      17    }
      18    return sum(argc);
      19  }