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 8static short 9signed_saturate_to_word (int x) 10{ 11 if (x > (int) 0x7fff) 12 return 0x7fff; 13 14 if (x < (int) 0xffff8000) 15 return 0x8000; 16 17 return (short) x; 18} 19 20static void 21compute_phsubsw256 (short *i1, short *i2, short *r) 22{ 23 int i; 24 25 for (i = 0; i < 4; i++) 26 r[i + 0] = signed_saturate_to_word (i1[2 * i] - i1[2 * i + 1]); 27 28 for (i = 0; i < 4; i++) 29 r[i + 4] = signed_saturate_to_word (i2[2 * i] - i2[2 * i + 1]); 30 31 for (i = 0; i < 4; i++) 32 r[i + 8] = signed_saturate_to_word (i1[2 * i + 8] - i1[2 * i + 9]); 33 34 for (i = 0; i < 4; i++) 35 r[i + 12] = signed_saturate_to_word (i2[2 * i + 8] - i2[2 * i + 9]); 36} 37 38static void 39avx2_test (void) 40{ 41 union256i_w s1, s2, res; 42 short res_ref[16]; 43 int i; 44 int fail = 0; 45 46 for (i = 0; i < 256; i += 16) 47 { 48 s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]); 49 s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]); 50 51 res.x = _mm256_hsubs_epi16 (s1.x, s2.x); 52 53 compute_phsubsw256 (s1.a, s2.a, res_ref); 54 55 fail += check_union256i_w (res, res_ref); 56 } 57 58 if (fail != 0) 59 abort (); 60} 61