1  /* { dg-do run { target { bmi && { ! ia32 } } } } */
       2  /* { dg-options "-O2 -mbmi -fno-inline" } */
       3  
       4  #include <x86intrin.h>
       5  
       6  #include "bmi-check.h"
       7  
       8  long long calc_tzcnt_u64 (long long src)
       9  {
      10    int i;
      11    int res = 0;
      12  
      13    while ( (res<64) && ((src&1) == 0)) {
      14      ++res;
      15      src >>= 1;
      16    }
      17  
      18    return res;
      19  }
      20  
      21  static void
      22  bmi_test ()
      23  {
      24    unsigned i;
      25    long long src = 0xfacec0ffeefacec0;
      26    long long res, res_ref;
      27  
      28    for (i=0; i<5; ++i) {
      29      src = i + src << i;
      30  
      31      res_ref = calc_tzcnt_u64 (src);
      32      res = __tzcnt_u64 (src);
      33  
      34      if (res != res_ref)
      35        abort();
      36    }
      37  }