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

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx2 -O2" } */
   3 /* { dg-require-effective-target avx2 } */
   4
   5 #include "avx2-check.h"
   6 #include "ssse3-vals.h"
   7
   8 static void
   9 compute_pmaddwd256 (short *i1, short *i2, int *r)
  10 {
  11   int i;
  12
  13   for (i = 0; i < 8; i++)
  14     r[i] = ((int) i1[2 * i] * (int) i2[2 * i] +
  15             (int) i1[2 * i + 1] * (int) i2[2 * i + 1]);
  16 }
  17
  18 static void
  19 avx2_test (void)
  20 {
  21   union256i_w s1, s2;
  22   union256i_d res;
  23   int res_ref[8];
  24   int i;
  25   int fail = 0;
  26
  27   for (i = 0; i < 256; i += 16)
  28     {
  29       s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]);
  30       s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]);
  31
  32       res.x = _mm256_madd_epi16 (s1.x, s2.x);
  33
  34       compute_pmaddwd256 (s1.a, s2.a, res_ref);
  35
  36       fail += check_union256i_d (res, res_ref);
  37     }
  38
  39   if (fail != 0)
  40     abort ();
  41 }