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

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target avx2 } */
   3 /* { dg-options "-O2 -mavx2" } */
   4
   5 #include <string.h>
   6 #include "avx2-check.h"
   7
   8 #define N 0xec
   9
  10 static void
  11 compute_pshufd256 (int *s1, unsigned char imm, int *r)
  12 {
  13   int i;
  14
  15   for (i = 0; i < 4; i++)
  16     r[i] = s1[((N & (0x3 << (2 * i))) >> (2 * i))];
  17
  18   for (i = 0; i < 4; i++)
  19     r[i + 4] = s1[((N & (0x3 << (2 * i))) >> (2 * i)) + 4];
  20 }
  21
  22 void static
  23 avx2_test (void)
  24 {
  25   union256i_d s1, res;
  26   int res_ref[8];
  27   int i, j, sign = 1;
  28   int fail = 0;
  29
  30   for (i = 0; i < 10; i++)
  31     {
  32       for (j = 0; j < 8; j++)
  33         {
  34           s1.a[j] = j * i * sign;
  35           sign = -sign;
  36         }
  37
  38       res.x = _mm256_shuffle_epi32 (s1.x, N);
  39       compute_pshufd256 (s1.a, N, res_ref);
  40
  41       fail += check_union256i_d (res, res_ref);
  42     }
  43
  44   if (fail != 0)
  45     abort ();
  46 }