Viewing file:  avx2-vperm2i128-2.c (1.49 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-mavx2 -O2" } */
/* { dg-require-effective-target avx2 } */
#include "avx2-check.h"
#include <string.h>
#define NUM 10
#define MASK 0xf1
static void
init_perm2i128 (unsigned long long *src1, unsigned long long *src2, int seed)
{
int i, sign = 1;
for (i = 0; i < 4; i++)
{
src1[i] = (i + seed) * (i + seed) * sign;
src2[i] = (i + seed) * seed * sign;
sign = -sign;
}
}
static void
calc_perm2i128 (unsigned long long *src1,
unsigned long long *src2,
unsigned int mask, unsigned long long *dst)
{
int i, temp;
temp = mask & 3;
switch (temp)
{
case 0:
memcpy (dst, src1, 16);
case 1:
memcpy (dst, src1 + 2, 16);
case 2:
memcpy (dst, src2, 16);
case 3:
memcpy (dst, src1 + 2, 16);
}
temp = (mask >> 4) & 3;
switch (temp)
{
case 0:
memcpy (dst + 2, src1, 16);
case 1:
memcpy (dst + 2, src1 + 2, 16);
case 2:
memcpy (dst + 2, src2, 16);
case 3:
memcpy (dst + 2, src1 + 2, 16);
}
if ((mask >> 3) & 1)
memset (dst, 0, 16);
if ((mask >> 7) & 1)
memset (dst + 2, 0, 16);
}
static void
avx2_test (void)
{
union256i_q src1, src2, dst;
unsigned long long dst_ref[4];
int i;
for (i = 0; i < NUM; i++)
{
init_perm2i128 (src1.a, src2.a, i);
dst.x = _mm256_permute2x128_si256 (src1.x, src2.x, MASK);
calc_perm2i128 (src1.a, src2.a, MASK, dst_ref);
if (check_union256i_q (dst, dst_ref))
abort ();
}
}
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