1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  
       4  #include <limits.h>
       5  
       6  _Bool and1(unsigned x, unsigned y)
       7  {
       8    /* x > y && x != 0 --> x > y */
       9    return x > y && x != 0;
      10  }
      11  
      12  _Bool and2(unsigned x, unsigned y)
      13  {
      14    /* x < y && x != UINT_MAX --> x < y */
      15    return x < y && x != UINT_MAX;
      16  }
      17  
      18  _Bool and3(signed x, signed y)
      19  {
      20    /* x > y && x != INT_MIN --> x > y */
      21    return x > y && x != INT_MIN;
      22  }
      23  
      24  _Bool and4(signed x, signed y)
      25  {
      26    /* x < y && x != INT_MAX --> x < y */
      27    return x < y && x != INT_MAX;
      28  }
      29  
      30  /* { dg-final { scan-tree-dump-not " != " "optimized" } } */