1  /* { dg-do run } */
       2  /* { dg-options "-O2 -fno-tree-fre" } */
       3  
       4  int __attribute__((noipa))
       5  foo (int flag, int *p)
       6  {
       7    int val = *p;
       8    if (flag)
       9      {
      10        if (val != 1)
      11          __builtin_unreachable ();
      12        return 0;
      13      }
      14    int val2 = *p;
      15    return val2 == 2;
      16  }
      17  
      18  int main()
      19  {
      20    int i = 2;
      21    if (foo (0, &i) != 1)
      22      __builtin_abort ();
      23    return 0;
      24  }