1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-original" } */
       3  
       4  int test1(int a, int b)
       5  {
       6    return (a ^ b) & a;
       7  }
       8  
       9  int test2(int c, int d)
      10  {
      11    return (c ^ d) & d;
      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  /* { dg-final { scan-tree-dump-times "~b \& a" 1 "original" } } */
      25  /* { dg-final { scan-tree-dump-times "~c \& d" 1 "original" } } */
      26  /* { dg-final { scan-tree-dump-times "~f \& e" 1 "original" } } */
      27  /* { dg-final { scan-tree-dump-times "~h \& g" 1 "original" } } */
      28