1  /* { dg-do run { target bmi } } */
       2  /* { dg-options "-O2 -mbmi -fno-inline" } */
       3  
       4  #include <x86intrin.h>
       5  
       6  #include "bmi-check.h"
       7  
       8  int calc_tzcnt_u32 (int src)
       9  {
      10    int i;
      11    int res = 0;
      12  
      13    while ( (res<32) && ((src&1) == 0)) {
      14      ++res;
      15      src >>= 1;
      16    }
      17    return res;
      18  }
      19  
      20  static void
      21  bmi_test ()
      22  {
      23    unsigned i;
      24    int src = 0xfacec0ff;
      25    int res, res_ref;
      26  
      27    for (i=0; i<5; ++i) {
      28      src = i + src << i;
      29  
      30      res_ref = calc_tzcnt_u32 (src);
      31      res = __tzcnt_u32 (src);
      32  
      33      if (res != res_ref)
      34        abort();
      35    }
      36  }