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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_sadbw256 (unsigned char *s1, unsigned char *s2, unsigned short *r)

{

  int i;

  unsigned char tmp[32];

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

    tmp[i] = s1[i] > s2[i] ? s1[i] - s2[i] : s2[i] - s1[i];

  memset (r, 0, 32);

  for (i = 0; i < 8; i++)

    r[0] += tmp[i];

  for (i = 8; i < 16; i++)

    r[4] += tmp[i];

  for (i = 16; i < 24; i++)

    r[8] += tmp[i];

  for (i = 24; i < 32; i++)

    r[12] += tmp[i];

}

void static

avx2_test (void)

{

  union256i_b s1, s2;

  union256i_w res;

  unsigned short res_ref[16];

  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_sad_epu8 (s1.x, s2.x);;

      compute_sadbw256 (s1.a, s2.a, res_ref);

      fail += check_union256i_w (res, res_ref);

    }

  if (fail != 0)

    abort ();

}