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

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx2 -O2" } */
   3 /* { dg-require-effective-target avx2 } */
   4
   5 #include "avx2-check.h"
   6
   7 static void
   8 compute_pmaxub256 (unsigned char *s1, unsigned char *s2, unsigned char *r)
   9 {
  10   int i;
  11
  12   for (i = 0; i < 32; i++)
  13     r[i] = s1[i] > s2[i] ? s1[i] : s2[i];
  14 }
  15
  16 static void
  17 avx2_test (void)
  18 {
  19   union256i_b s1, s2, res;
  20   unsigned char res_ref[32];
  21   int i, j;
  22   int fail = 0;
  23
  24   for (i = 0; i < 10; i++)
  25     {
  26       for (j = 0; j < 32; j++)
  27         {
  28           s1.a[j] = j * i;
  29           s2.a[j] = i + 200;
  30         }
  31
  32       res.x = _mm256_max_epu8 (s1.x, s2.x);
  33
  34       compute_pmaxub256 ((unsigned char *) s1.a,
  35                          (unsigned char *) s2.a, (unsigned char *) res_ref);
  36
  37       fail += check_union256i_b (res, res_ref);
  38     }
  39
  40   if (fail != 0)
  41     abort ();
  42 }