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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_i32gatherpd256 (long long *s1, int *s2, int scale, long long *r)

{

  long long i;

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

    r[i] = *(long long *) (((unsigned char *) s1) + s2[i] * scale);

}

void static

avx2_test (void)

{

  long long i;

  union128i_d idx;

  union256i_q res;

  long long s1[4], res_ref[4] = { 0 };

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

    {

      /* Set some stuff */

      s1[i] = 1983 * (i + 1) * (i + 2);

      /* About to gather in reverse order,

         divide by 2 to demonstrate scale */

      idx.a[i] = (32 - (i + 1) * 8) >> 1;

    }

  res.x = _mm256_i32gather_epi64 ((long long int *) s1, idx.x, 2);

  compute_i32gatherpd256 (s1, idx.a, 2, res_ref);

  if (check_union256i_q (res, res_ref) != 0)

    abort ();

}