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  unsigned calc_bextr_u32 (unsigned src1, unsigned src2)
       9  {
      10    unsigned res = 0;
      11    unsigned char start = (src2 & 0xff);
      12    unsigned char len = (int) ((src2 >> 8) & 0xff);
      13    if (start < 32) {
      14      unsigned i;
      15      unsigned last = (start+len) < 32 ? start+len : 32;
      16  
      17      src1 >>= start;
      18      for (i=start; i<last; ++i) {
      19        res |= (src1 & 1) << (i-start);
      20        src1 >>= 1;
      21      }
      22    }
      23  
      24    return res;
      25  }
      26  
      27  static void
      28  bmi_test ()
      29  {
      30    unsigned i;
      31    unsigned char start, len;
      32    unsigned src1 = 0xfacec0ff;
      33    unsigned res, res_ref, src2;
      34  
      35    for (i=0; i<5; ++i) {
      36      start = i * 4;
      37      len = i * 4;
      38  
      39      src1 = src1 * 3;
      40      src2 = (start & 0xff) | ((len & 0xff) << 8);
      41  
      42      res_ref = calc_bextr_u32 (src1, src2);
      43      res = _bextr_u32 (src1, start, len);
      44  
      45      if (res != res_ref)
      46        abort();
      47    }
      48  }