Viewing file:  avx512f-i32gatherd512-2.c (1.1 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-mavx512f -O2 -mtune=knl" } */
/* { dg-require-effective-target avx512f } */
#include "avx512f-check.h"
#define SCALE 2
static void
compute_gatherdd (int *res, __mmask16 m16, int *idx,
int *src, int scale, int *r)
{
int i;
for (i = 0; i < 16; i++)
{
if (m16 & (1 << i))
r[i] = *(int *) (((unsigned char *) src) + idx[i] * scale);
else
r[i] = res[i];
}
}
static void
avx512f_test (void)
{
int i;
union512i_d idx, res;
int src[16];
int res_ref[16];
__mmask16 m16 = 0xBC5D;
for (i = 0; i < 16; i++)
{
src[i] = 1973 * (i + 1) * (i + 2);
/* About to gather in reverse order,
divide by 2 to demonstrate scale */
idx.a[i] = (64 - (i + 1) * 4) >> 1;
}
res.x = _mm512_mask_i32gather_epi32 (res.x, m16, idx.x, src, SCALE);
compute_gatherdd (res.a, m16, idx.a, src, SCALE, res_ref);
if (check_union512i_d (res, res_ref))
abort ();
res.x = _mm512_i32gather_epi32 (idx.x, src, SCALE);
compute_gatherdd (res.a, 0xFFFF, idx.a, src, SCALE, res_ref);
if (check_union512i_d (res, res_ref))
abort ();
}
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