1  /* { dg-do run { target bmi2 } } */
       2  /* { dg-options "-mbmi2 -O2" } */
       3  
       4  #include <x86intrin.h>
       5  #include "bmi2-check.h"
       6  
       7  __attribute__((noinline))
       8  unsigned
       9  calc_bzhi_u32 (unsigned a, int l)
      10  {
      11    unsigned res = a;
      12    int i;
      13    for (i = 0; i < 32 - l; ++i)
      14      res &= ~(1 << (31 - i));
      15  
      16    return res;
      17  }
      18  
      19  static void
      20  bmi2_test ()
      21  {
      22    unsigned i;
      23    unsigned src = 0xce7ace0f;
      24    unsigned res, res_ref;
      25  
      26    for (i = 0; i < 5; ++i) {
      27      src = src * (i + 1);
      28  
      29      res_ref = calc_bzhi_u32 (src, i * 2);
      30      res = _bzhi_u32 (src, i * 2);
      31  
      32      if (res != res_ref)
      33        abort();
      34    }
      35  }