1  /* PR tree-optimization/96685 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-optimized" } */
       4  /* { dg-final { scan-tree-dump-times "return 1;" 4 "optimized" } } */
       5  
       6  int
       7  f1 (unsigned x, unsigned y)
       8  {
       9    unsigned int r1 = (x - y);
      10    r1 = ~r1;
      11    unsigned int r2 = ~(x - y);
      12    return r1 == r2;
      13  }
      14  
      15  int
      16  f2 (unsigned x, unsigned y)
      17  {
      18    unsigned int r1 = (x - 23);
      19    r1 = ~r1;
      20    unsigned int r2 = ~(x - 23);
      21    return r1 == r2;
      22  }
      23  
      24  int
      25  f3 (int x, int y)
      26  {
      27    int r1 = (x - y);
      28    r1 = ~r1;
      29    int r2 = ~(x - y);
      30    return r1 == r2;
      31  }
      32  
      33  int
      34  f4 (int x, int y)
      35  {
      36    int r1 = (x - 23);
      37    r1 = ~r1;
      38    int r2 = ~(x - 23);
      39    return r1 == r2;
      40  }