1  /* Copyright (C) 2002  Free Software Foundation
       2  
       3     Check that constant folding of shift operations is working.
       4  
       5     Roger Sayle, 10th October 2002.  */
       6  
       7  extern void abort (void);
       8  extern void link_error (void);
       9  
      10  void
      11  utest (unsigned int x)
      12  {
      13    if (x >> 0 != x)
      14      link_error ();
      15  
      16    if (x << 0 != x)
      17      link_error ();
      18  
      19    if (0 << x != 0)
      20      link_error ();
      21  
      22    if (0 >> x != 0)
      23      link_error ();
      24  
      25    if (-1 >> x != -1)
      26      link_error ();
      27  
      28    if (~0 >> x != ~0)
      29      link_error ();
      30  }
      31  
      32  void
      33  stest (int x)
      34  {
      35    if (x >> 0 != x)
      36      link_error ();
      37  
      38    if (x << 0 != x)
      39      link_error ();
      40  
      41    if (0 << x != 0)
      42      link_error ();
      43  
      44    if (0 >> x != 0)
      45      link_error ();
      46  }
      47  
      48  int
      49  main ()
      50  {
      51    utest(9);
      52    utest(0);
      53  
      54    stest(9);
      55    stest(0);
      56  
      57    return 0;
      58  }
      59  
      60  #ifndef __OPTIMIZE__
      61  void
      62  link_error ()
      63  {
      64    abort ();
      65  }
      66  #endif
      67