1  /* { dg-do run } */
       2  /* { dg-options "-mavx512f -O2 -mtune=knl" } */
       3  /* { dg-require-effective-target avx512f } */
       4  
       5  #include "avx512f-check.h"
       6  
       7  #define SCALE 2
       8  
       9  static void
      10  compute_gatherdd (int *res, __mmask16 m16, int *idx,
      11  		  int *src, int scale, int *r)
      12  {
      13    int i;
      14  
      15    for (i = 0; i < 16; i++)
      16      {
      17        if (m16 & (1 << i))
      18  	r[i] = *(int *) (((unsigned char *) src) + idx[i] * scale);
      19        else
      20  	r[i] = res[i];
      21      }
      22  }
      23  
      24  static void
      25  avx512f_test (void)
      26  {
      27    int i;
      28    union512i_d idx, res;
      29    int src[16];
      30    int res_ref[16];
      31    __mmask16 m16 = 0xBC5D;
      32  
      33    for (i = 0; i < 16; i++)
      34      {
      35        src[i] = 1973 * (i + 1) * (i + 2);
      36  
      37        /* About to gather in reverse order,
      38  	 divide by 2 to demonstrate scale */
      39        idx.a[i] = (64 - (i + 1) * 4) >> 1;
      40      }
      41  
      42    res.x = _mm512_mask_i32gather_epi32 (res.x, m16, idx.x, src, SCALE);
      43    compute_gatherdd (res.a, m16, idx.a, src, SCALE, res_ref);
      44  
      45    if (check_union512i_d (res, res_ref))
      46      abort ();
      47  
      48    res.x = _mm512_i32gather_epi32 (idx.x, src, SCALE);
      49    compute_gatherdd (res.a, 0xFFFF, idx.a, src, SCALE, res_ref);
      50  
      51    if (check_union512i_d (res, res_ref))
      52      abort ();
      53  }