1  /* { dg-do run } */
       2  /* { dg-options "-mavx512f -O2" } */
       3  /* { dg-require-effective-target avx512f } */
       4  
       5  #include "avx512f-check.h"
       6  
       7  #define SCALE 2
       8  
       9  static void
      10  compute_gatherqps (float *res, __mmask8 m8, long long *idx,
      11  		   float *src, int scale, float *r)
      12  {
      13    int i;
      14  
      15    for (i = 0; i < 8; i++)
      16      {
      17        if (m8 & (1 << i))
      18  	r[i] = *(float *) (((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    union256 res;
      29    union512i_q idx;
      30    float src[8];
      31    float res_ref[8];
      32    __mmask8 m8 = 0xC5;
      33  
      34    res.x = _mm256_setzero_ps();
      35  
      36    for (i = 0; i < 8; i++)
      37      {
      38        src[i] = 2.718281828459045 * (i + 1) * (i + 2);
      39  
      40        /* About to gather in reverse order,
      41  	 divide by 2 to demonstrate scale */
      42        idx.a[i] = (32 - (i + 1) * 4) >> 1;
      43      }
      44  
      45    res.x = _mm512_mask_i64gather_ps (res.x, m8, idx.x, src, SCALE);
      46    compute_gatherqps (res.a, m8, idx.a, src, SCALE, res_ref);
      47  
      48    if (check_union256 (res, res_ref))
      49      abort ();
      50  
      51    res.x = _mm512_i64gather_ps (idx.x, src, SCALE);
      52    compute_gatherqps (res.a, 0xFF, idx.a, src, SCALE, res_ref);
      53  
      54    if (check_union256 (res, res_ref))
      55      abort ();
      56  }