1  /* { dg-do run } */
       2  /* { dg-require-effective-target avx2 } */
       3  /* { dg-options "-O2 -mavx2" } */
       4  
       5  #include <string.h>
       6  #include "avx2-check.h"
       7  
       8  static void
       9  compute_pshufb256 (char *s1, char *s2, char *r)
      10  {
      11    int i;
      12    char select;
      13  
      14    for (i = 0; i < 16; i++)
      15      {
      16        select = s2[i];
      17        if (select & 0x80)
      18  	r[i] = 0;
      19        else
      20  	r[i] = s1[select & 0xf];
      21  
      22        select = s2[i + 16];
      23        if (select & 0x80)
      24  	r[i + 16] = 0;
      25        else
      26  	r[i + 16] = s1[16 + (select & 0xf)];
      27      }
      28  }
      29  
      30  void static
      31  avx2_test (void)
      32  {
      33    union256i_b s1, s2, res;
      34    char res_ref[32];
      35    int i, j;
      36    int fail = 0;
      37  
      38    for (i = 0; i < 10; i++)
      39      {
      40        for (j = 0; j < 32; j++)
      41  	{
      42  	  s1.a[j] = j * i;
      43  	  s2.a[j] = j + 20;
      44  	}
      45  
      46        res.x = _mm256_shuffle_epi8 (s1.x, s2.x);
      47        compute_pshufb256 (s1.a, s2.a, res_ref);
      48  
      49        fail += check_union256i_b (res, res_ref);
      50      }
      51  
      52    if (fail != 0)
      53      abort ();
      54  }