gcc/testsuite/gcc.target/i386/avx512f-i32scatterd512-2.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_scatterdd (__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         *(int *) (((unsigned char *) r) + idx[i] * scale) = src[i];
  19     }
  20 }
  21
  22 static void
  23 avx512f_test (void)
  24 {
  25   int i;
  26   union512i_d src, idx;
  27   int res[16] = { 0 };
  28   int res_ref[16] = { 0 };
  29   __mmask16 m16 = 0xBC5D;
  30
  31   for (i = 0; i < 16; i++)
  32     {
  33       src.a[i] = 1973 * (i + 1) * (i + 2);
  34
  35       /* About to gather in reverse order,
  36          divide by 2 to demonstrate scale */
  37       idx.a[i] = (64 - (i + 1) * 4) >> 1;
  38     }
  39
  40   _mm512_mask_i32scatter_epi32 (res, m16, idx.x, src.x, SCALE);
  41   compute_scatterdd (m16, idx.a, src.a, SCALE, res_ref);
  42
  43   if (checkVi (res, res_ref, 16))
  44     abort ();
  45
  46   _mm512_i32scatter_epi32 (res, idx.x, src.x, SCALE);
  47   compute_scatterdd (0xFFFF, idx.a, src.a, SCALE, res_ref);
  48
  49   if (checkVi (res, res_ref, 16))
  50     abort ();
  51 }