gcc/testsuite/gcc.target/i386/avx2-vpmulhw-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_pmulhw256 (short *s1, short *s2, short *r)
   9 {
  10   int i;
  11
  12   for (i = 0; i < 16; i++)
  13     r[i] = (s1[i] * s2[i]) >> 16;
  14 }
  15
  16 static void
  17 avx2_test (void)
  18 {
  19   union256i_w s1, s2, res;
  20   short res_ref[16];
  21   int i, j, sign = 1;
  22   int fail = 0;
  23
  24   for (i = 0; i < 10; i++)
  25     {
  26       for (j = 0; j < 16; j++)
  27         {
  28           s1.a[j] = i * j * sign;
  29           s2.a[j] = (j + 20) * sign;
  30           sign = -sign;
  31         }
  32
  33       res.x = _mm256_mulhi_epi16 (s1.x, s2.x);
  34
  35       compute_pmulhw256 (s1.a, s2.a, res_ref);
  36
  37       fail += check_union256i_w (res, res_ref);
  38     }
  39
  40   if (fail != 0)
  41     abort ();
  42 }