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/* { dg-do run } */
/* { dg-options "-mavx2 -O2" } */
/* { dg-require-effective-target avx2 } */
 
#include "avx2-check.h"
#include "ssse3-vals.h"
 
static short
signed_saturate_to_word (int x)
{
  if (x > (int) 0x7fff)
    return 0x7fff;
 
  if (x < (int) 0xffff8000)
    return 0x8000;
 
  return (short) x;
}
 
static void
compute_phaddsw256 (short *i1, short *i2, short *r)
{
  int i;
 
  for (i = 0; i < 4; i++)
    r[i + 0] = signed_saturate_to_word (i1[2 * i] + i1[2 * i + 1]);
 
  for (i = 0; i < 4; i++)
    r[i + 4] = signed_saturate_to_word (i2[2 * i] + i2[2 * i + 1]);
 
  for (i = 0; i < 4; i++)
    r[i + 8] = signed_saturate_to_word (i1[2 * i + 8] + i1[2 * i + 9]);
 
  for (i = 0; i < 4; i++)
    r[i + 12] = signed_saturate_to_word (i2[2 * i + 8] + i2[2 * i + 9]);
}
 
static void
avx2_test (void)
{
  union256i_w s1, s2, res;
  short res_ref[16];
  int i, j;
  int fail = 0;
 
 
  for (i = 0; i < 256; i += 16)
    {
      s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]);
      s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]);
 
      res.x = _mm256_hadds_epi16 (s1.x, s2.x);
 
      compute_phaddsw256 (s1.a, s2.a, res_ref);
 
      fail += check_union256i_w (res, res_ref);
    }
 
  if (fail != 0)
    abort ();
}