1  /* PR middle-end/21137  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-original" } */
       4  extern void foo();
       5  
       6  void test1(int a)
       7  {
       8    if ((a >> 3) & 1)
       9      foo ();
      10  }
      11  
      12  void test2(int b)
      13  {
      14    if ((b >> 3) & 4)
      15      foo ();
      16  }
      17  
      18  int test3(int c)
      19  {
      20    return (c >> 3) & 1;
      21  }
      22  
      23  int test4(int d)
      24  {
      25    return (d >> 3) & 4;
      26  }
      27  
      28  #if __INT_MAX__ == 32767
      29  #define INT_BITS 16
      30  #elif __INT_MAX__ == 2147483647
      31  #define INT_BITS 32
      32  #elif __INT_MAX__ == 9223372036854775807
      33  #define INT_BITS 64
      34  #else
      35  #error Please add support for your target here.
      36  #endif
      37  
      38  void test5(int e)
      39  {
      40    if ((e >> (INT_BITS - 1)) & 64)
      41      foo();
      42  }
      43  
      44  void test6(unsigned int f)
      45  {
      46    if ((f >> (INT_BITS - 1)) & 64)
      47      foo();
      48  }
      49  
      50  /* { dg-final { scan-tree-dump-times "\\(a \& 8\\) != 0" 1 "original" } } */
      51  /* { dg-final { scan-tree-dump-times "\\(b \& 32\\) != 0" 1 "original" } } */
      52  /* { dg-final { scan-tree-dump-times "c >> 3 \& 1" 1 "original" } } */
      53  /* { dg-final { scan-tree-dump-times "d >> 3 \& 4" 1 "original" } } */
      54  /* { dg-final { scan-tree-dump-times "e < 0" 1 "original" } } */
      55  /* { dg-final { scan-tree-dump-times "if \\(0\\)" 1 "original" } } */