gcc/testsuite/gcc.target/i386/avx2-vphsubd-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_phsubd256 (int *i1, int *i2, int *r)
  10 {
  11   int i;
  12
  13   for (i = 0; i < 2; i++)
  14     r[i + 0] = i1[2 * i] - i1[2 * i + 1];
  15
  16   for (i = 0; i < 2; i++)
  17     r[i + 2] = i2[2 * i] - i2[2 * i + 1];
  18
  19   for (i = 0; i < 2; i++)
  20     r[i + 4] = i1[2 * i + 4] - i1[2 * i + 5];
  21
  22   for (i = 0; i < 2; i++)
  23     r[i + 6] = i2[2 * i + 4] - i2[2 * i + 5];
  24 }
  25
  26 static void
  27 avx2_test (void)
  28 {
  29   union256i_d s1, s2, res;
  30   int res_ref[8];
  31   int i, j;
  32   int fail = 0;
  33
  34
  35   for (i = 0; i < 256; i += 16)
  36     {
  37       s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]);
  38       s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]);
  39
  40       res.x = _mm256_hsub_epi32 (s1.x, s2.x);
  41
  42       compute_phsubd256 (s1.a, s2.a, res_ref);
  43
  44       fail += check_union256i_d (res, res_ref);
  45     }
  46
  47   if (fail != 0)
  48     abort ();
  49 }