gcc/testsuite/gcc.target/i386/avx2-vpmuldq-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_pmuldq256 (int *s1, int *s2, long long int *r)
   9 {
  10   int i;
  11
  12   for (i = 0; i < 4; i++)
  13     r[i] = s1[i * 2] * s2[i * 2];
  14 }
  15
  16 static void
  17 avx2_test (void)
  18 {
  19   union256i_d s1, s2;
  20   union256i_q res;
  21   long long int res_ref[4];
  22   int i, j, sign = 1;
  23   int fail = 0;
  24
  25   for (i = 0; i < 10; i++)
  26     {
  27       for (j = 0; j < 8; j++)
  28         {
  29           s1.a[j] = i * j * sign;
  30           s2.a[j] = (j + 20) * sign;
  31           sign = -sign;
  32         }
  33
  34       res.x = _mm256_mul_epi32 (s1.x, s2.x);
  35       compute_pmuldq256 (s1.a, s2.a, res_ref);
  36
  37       fail += check_union256i_q (res, res_ref);
  38     }
  39
  40   if (fail != 0)
  41     abort ();
  42 }