2 /* { dg-options "-mavx2 -O2" } */
3 /* { dg-require-effective-target avx2 } */
5 #include "avx2-check.h"
6 #include "ssse3-vals.h"
9 signed_saturate_to_word (int x)
14 if (x < (int) 0xffff8000)
21 compute_phsubsw256 (short *i1, short *i2, short *r)
25 for (i = 0; i < 4; i++)
26 r[i + 0] = signed_saturate_to_word (i1[2 * i] - i1[2 * i + 1]);
28 for (i = 0; i < 4; i++)
29 r[i + 4] = signed_saturate_to_word (i2[2 * i] - i2[2 * i + 1]);
31 for (i = 0; i < 4; i++)
32 r[i + 8] = signed_saturate_to_word (i1[2 * i + 8] - i1[2 * i + 9]);
34 for (i = 0; i < 4; i++)
35 r[i + 12] = signed_saturate_to_word (i2[2 * i + 8] - i2[2 * i + 9]);
41 union256i_w s1, s2, res;
46 for (i = 0; i < 256; i += 16)
48 s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]);
49 s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]);
51 res.x = _mm256_hsubs_epi16 (s1.x, s2.x);
53 compute_phsubsw256 (s1.a, s2.a, res_ref);
55 fail += check_union256i_w (res, res_ref);