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/* { dg-do run } */

/* { dg-require-effective-target avx2 } */

/* { dg-options "-O2 -mavx2" } */

#include <string.h>

#include "avx2-check.h"

static void

compute_pshufb256 (char *s1, char *s2, char *r)

{

  int i;

  char select;

  for (i = 0; i < 16; i++)

    {

      select = s2[i];

      if (select & 0x80)

        r[i] = 0;

      else

        r[i] = s1[select & 0xf];

      select = s2[i + 16];

      if (select & 0x80)

        r[i + 16] = 0;

      else

        r[i + 16] = s1[16 + (select & 0xf)];

    }

}

void static

avx2_test (void)

{

  union256i_b s1, s2, res;

  char res_ref[32];

  int i, j;

  int fail = 0;

  for (i = 0; i < 10; i++)

    {

      for (j = 0; j < 32; j++)

        {

          s1.a[j] = j * i;

          s2.a[j] = j + 20;

        }

      res.x = _mm256_shuffle_epi8 (s1.x, s2.x);

      compute_pshufb256 (s1.a, s2.a, res_ref);

      fail += check_union256i_b (res, res_ref);

    }

  if (fail != 0)

    abort ();

}