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  
       8  static void
       9  compute_i64gatherps256 (float *src,
      10  			float *s1,
      11  			long long *s2, float *mask, int scale, float *r)
      12  {
      13    int i;
      14  
      15    for (i = 0; i < 4; ++i)
      16      if ((((int *) mask)[i] >> 31) & 1)
      17        r[i] = *(float *) (((unsigned char *) s1) + s2[i] * scale);
      18      else
      19        r[i] = src[i];
      20  }
      21  
      22  void static
      23  avx2_test (void)
      24  {
      25    int i;
      26    union256i_q idx;
      27    union128 res, src, mask;
      28    float s1[4], res_ref[4] = { 0 };
      29  
      30    for (i = 0; i < 4; ++i)
      31      {
      32        /* Set some stuff */
      33        s1[i] = 2.718281828459045 * (i + 1) * (i + 2);
      34  
      35        /* Set src as something different from s1 */
      36        src.a[i] = -s1[i];
      37  
      38        /* Mask out evens */
      39        ((int *) mask.a)[i] = i % 2 ? 0 : -1;
      40  
      41        /* About to gather in reverse order,
      42           divide by 2 to demonstrate scale */
      43        idx.a[i] = (16 - (i + 1) * 4) >> 1;
      44      }
      45  
      46    res.x = _mm256_mask_i64gather_ps (src.x, s1, idx.x, mask.x, 2);
      47  
      48    compute_i64gatherps256 (src.a, s1, idx.a, mask.a, 2, res_ref);
      49  
      50    if (check_union128 (res, res_ref) != 0)
      51      abort ();
      52  }