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/* { dg-do run } */

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

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

#include "avx2-check.h"

#include <string.h>

#define NUM 20

#undef MASK

#define MASK 0xfe

static void

init_pblendw (short *src1, short *src2, int seed)

{

  int i, sign = 1;

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

    {

      src1[i] = (i + seed) * (i + seed) * sign;

      src2[i] = (i + seed + 20) * sign;

      sign = -sign;

    }

}

static void

calc_pblendw (short *src1, short *src2, unsigned int mask, short *dst)

{

  int i;

  memcpy (dst, src1, 32);

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

    if (mask & (1 << (i % 8)))

      dst[i] = src2[i];

}

static void

avx2_test (void)

{

  union256i_w src1, src2, dst;

  short dst_ref[16];

  int i;

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

    {

      init_pblendw (src1.a, src2.a, i);

      dst.x = _mm256_blend_epi16 (src1.x, src2.x, MASK);

      calc_pblendw (src1.a, src2.a, MASK, dst_ref);

      if (check_union256i_w (dst, dst_ref))

        abort ();

    }

}