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
8static void
9compute_sadbw256 (unsigned char *s1, unsigned char *s2, unsigned short *r)
10{
11  int i;
12  unsigned char tmp[32];
13
14  for (i = 0; i < 32; i++)
15    tmp[i] = s1[i] > s2[i] ? s1[i] - s2[i] : s2[i] - s1[i];
16
17  memset (r, 0, 32);
18
19  for (i = 0; i < 8; i++)
20    r[0] += tmp[i];
21
22  for (i = 8; i < 16; i++)
23    r[4] += tmp[i];
24
25  for (i = 16; i < 24; i++)
26    r[8] += tmp[i];
27
28  for (i = 24; i < 32; i++)
29    r[12] += tmp[i];
30}
31
32void static
33avx2_test (void)
34{
35  union256i_b s1, s2;
36  union256i_w res;
37  unsigned short res_ref[16];
38  int i, j;
39  int fail = 0;
40
41  for (i = 0; i < 10; i++)
42    {
43      for (j = 0; j < 32; j++)
44	{
45	  s1.a[j] = j * i;
46	  s2.a[j] = j + 20;
47	}
48
49      res.x = _mm256_sad_epu8 (s1.x, s2.x);;
50      compute_sadbw256 (s1.a, s2.a, res_ref);
51
52      fail += check_union256i_w (res, res_ref);
53    }
54
55  if (fail != 0)
56    abort ();
57}
58