gcc/testsuite/gcc.target/i386/avx2-vpsignw-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 static void
   9 compute_psignw256 (short int *s1, short int *s2, short int *r)
  10 {
  11   int i;
  12
  13   for (i = 0; i < 16; i++)
  14     if (s2[i] < 0)
  15       r[i] = -s1[i];
  16     else if (s2[i] == 0)
  17       r[i] = 0;
  18     else
  19       r[i] = s1[i];
  20 }
  21
  22 void static
  23 avx2_test (void)
  24 {
  25   union256i_w s1, s2, res;
  26   short int res_ref[16];
  27   int i, j;
  28   int fail = 0;
  29
  30   for (i = 0; i < 10; i++)
  31     {
  32       for (j = 0; j < 16; j++)
  33         {
  34           s1.a[j] = j * i;
  35           s2.a[j] = j + 20;
  36         }
  37
  38       res.x = _mm256_sign_epi16 (s1.x, s2.x);
  39       compute_psignw256 (s1.a, s2.a, res_ref);
  40
  41       fail += check_union256i_w (res, res_ref);
  42     }
  43
  44   if (fail != 0)
  45     abort ();
  46 }