gcc/testsuite/gcc.target/i386/avx2-vpermq-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx2 -O2" } */
   3 /* { dg-require-effective-target avx2 } */
   4
   5 #include "avx2-check.h"
   6 #include <string.h>
   7
   8 #define NUM 10
   9
  10 #define MASK 0xf1
  11
  12 static void
  13 init_permq (unsigned long long *src1, int seed)
  14 {
  15   int i, sign = 1;
  16
  17   for (i = 0; i < 4; i++)
  18     {
  19       src1[i] = (i + seed) * (i + seed) * sign;
  20       sign = -sign;
  21     }
  22 }
  23
  24 static void
  25 calc_permq (unsigned long long *src1, unsigned int mask,
  26             unsigned long long *dst)
  27 {
  28   int i, temp;
  29
  30   for (i = 0; i < 4; i++)
  31     {
  32       temp = (mask >> (2 * i)) & 3;
  33       dst[i] = src1[temp];
  34     }
  35 }
  36
  37 static void
  38 avx2_test (void)
  39 {
  40   union256i_q src1, dst;
  41   unsigned long long dst_ref[4];
  42   int i;
  43
  44   for (i = 0; i < NUM; i++)
  45     {
  46       init_permq (src1.a, i);
  47
  48       dst.x = _mm256_permute4x64_epi64 (src1.x, MASK);
  49       calc_permq (src1.a, MASK, dst_ref);
  50
  51       if (check_union256i_q (dst, dst_ref))
  52         abort ();
  53     }
  54 }