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/* { dg-do run } */

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

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

#include <string.h>

#include "avx2-check.h"

#define N 0xec

static void

compute_pshuflw256 (short *s1, unsigned char imm, short *r)

{

  int i;

  for (i = 0; i < 4; i++)

    {

      r[i] = s1[(imm >> (2 * i)) & 3];

      r[i + 8] = s1[((imm >> (2 * i)) & 3) + 8];

    }

  for (i = 4; i < 8; i++)

    {

      r[i] = s1[i];

      r[i + 8] = s1[i + 8];

    }

}

void static

avx2_test (void)

{

  union256i_w s1, res;

  short res_ref[16];

  int i, j, sign = 1;

  int fail = 0;

  for (i = 1; i < 10; i++)

    {

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

        {

          s1.a[j] = j * i * sign;

          sign = -sign;

        }

      res.x = _mm256_shufflelo_epi16 (s1.x, N);

      compute_pshuflw256 (s1.a, N, res_ref);

      fail += check_union256i_w (res, res_ref);

    }

  if (fail != 0)

    abort ();

}