1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-original" } */
       3  
       4  int test1(int a, int b)
       5  {
       6    return (a & b) | b;
       7  }
       8  
       9  int test2(int c, int d)
      10  {
      11    return (c & d) | c;
      12  }
      13  
      14  int test3(int e, int f)
      15  {
      16    return e | (e & f);
      17  }
      18  
      19  int test4(int g, int h)
      20  {
      21    return g | (h & g);
      22  }
      23  
      24  int test5(int i, int j)
      25  {
      26    return (i | j) & j;
      27  }
      28  
      29  int test6(int k, int l)
      30  {
      31    return (k | l) & k;
      32  }
      33  
      34  int test7(int m, int n)
      35  {
      36    return m & (m | n);
      37  }
      38  
      39  int test8(int o, int p)
      40  {
      41    return o & (p | o);
      42  }
      43  
      44  /* { dg-final { scan-tree-dump-times "return b;" 1 "original" } } */
      45  /* { dg-final { scan-tree-dump-times "return c;" 1 "original" } } */
      46  /* { dg-final { scan-tree-dump-times "return e;" 1 "original" } } */
      47  /* { dg-final { scan-tree-dump-times "return g;" 1 "original" } } */
      48  /* { dg-final { scan-tree-dump-times "return j;" 1 "original" } } */
      49  /* { dg-final { scan-tree-dump-times "return k;" 1 "original" } } */
      50  /* { dg-final { scan-tree-dump-times "return m;" 1 "original" } } */
      51  /* { dg-final { scan-tree-dump-times "return o;" 1 "original" } } */