gcc/testsuite/gcc.target/i386/avx512f-i32scatterq512-2.c

   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_scatterdq (__mmask8 m8, int *idx, long long *src,
  11                    int scale, long long *r)
  12 {
  13   int i;
  14
  15   for (i = 0; i < 8; i++)
  16     {
  17       if (m8 & (1 << i))
  18         *(long long *) (((unsigned char *) r) + idx[i] * scale) =
  19           src[i];
  20     }
  21 }
  22
  23 static void
  24 avx512f_test (void)
  25 {
  26   int i;
  27   union256i_d idx;
  28   union512i_q src;
  29   long long res[8] = { 0 };
  30   long long res_ref[8] = { 0 };
  31   __mmask8 m8 = 0xC5;
  32
  33   for (i = 0; i < 8; i++)
  34     {
  35       src.a[i] = 1983 * (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) * 8) >> 1;
  40     }
  41
  42   _mm512_mask_i32scatter_epi64 (res, m8, idx.x, src.x, SCALE);
  43   compute_scatterdq (m8, idx.a, src.a, SCALE, res_ref);
  44
  45   if (checkVl (res, res_ref, 8))
  46     abort ();
  47
  48   _mm512_i32scatter_epi64 (res, idx.x, src.x, SCALE);
  49   compute_scatterdq (0xFF, idx.a, src.a, SCALE, res_ref);
  50
  51   if (checkVl (res, res_ref, 8))
  52     abort ();
  53 }