1  /* { dg-do compile } */ 
       2  /* { dg-options "-O -fdump-tree-ccp1" } */
       3  
       4  extern void link_error (void);
       5  
       6  /* check folding */
       7  
       8  void test1 (void)
       9  {
      10    unsigned int l = 3 * 4 - 5 / 2;
      11    if (l != 10)
      12      link_error ();
      13  }
      14  
      15  void test11 (void)
      16  {
      17    unsigned int l = (((((((3 / 2 + 2) * 4) & 7) ^ 3) % 8) << 2) + 1) >> 2;
      18    if (l != 7)
      19      link_error ();
      20  }
      21  
      22  /* cprop in a basic block */
      23  void test111 (void)
      24  {
      25    unsigned int l0 = 3 / 2 + 2;
      26    unsigned int l1 = l0 * 4;
      27    unsigned int l2 = 7;
      28    unsigned int l3 = l1 & l2;
      29    unsigned int l4 = 3;
      30    unsigned int l5 = l3 ^ l4;
      31    unsigned int l6 = 8;
      32    unsigned int l7 = l5 % l6;
      33    unsigned int l8 = 2;
      34    unsigned int l9 = l7 << l8;
      35    unsigned int l10 = l9 + 1;
      36    unsigned int l11 = l10 >> 2;
      37    if (l11 != 7)
      38      link_error ();
      39  }
      40  
      41  
      42  /* cprop after an if statement */
      43  void test1111 (int p)
      44  {
      45    int l = 53;
      46    if (p)
      47      {
      48        if ((67 + l - 25) != 95)
      49          link_error ();
      50      }
      51    else
      52      {
      53        if ((93 - l +  25) != 65)
      54          link_error ();
      55      }
      56  }
      57  
      58  /* cprop after a loop */
      59  void test11111 (int p, int q, int r)
      60  {
      61    int l = 53;
      62    while (p < r)
      63      {
      64        if ((67 + l - 25) != 95)
      65          link_error ();
      66        p -= q;
      67      }
      68  }
      69  
      70  
      71  
      72  /* There should be not link_error calls, if there is any the
      73     optimization has failed */
      74  /* { dg-final { scan-tree-dump-times "link_error" 0 "ccp1"} } */