| /* { dg-do run } */ |
| /* { dg-require-effective-target avx2 } */ |
| /* { dg-options "-O2 -mavx2" } */ |
| |
| #include <string.h> |
| #include "avx2-check.h" |
| |
| static void |
| compute_i32gatherd256 (int *s1, int *s2, int scale, int *r) |
| { |
| int i; |
| |
| for (i = 0; i < 8; ++i) |
| r[i] = *(int *) (((unsigned char *) s1) + s2[i] * scale); |
| } |
| |
| void static |
| avx2_test (void) |
| { |
| int i; |
| union256i_d idx; |
| union256i_d res; |
| int s1[8], res_ref[8] = { 0 }; |
| |
| for (i = 0; i < 8; ++i) |
| { |
| /* Set some stuff */ |
| s1[i] = 1973 * (i + 1) * (i + 2); |
| |
| /* About to gather in reverse order, |
| divide by 2 to demonstrate scale */ |
| idx.a[i] = (32 - (i + 1) * 4) >> 1; |
| } |
| |
| res.x = _mm256_i32gather_epi32 (s1, idx.x, 2); |
| |
| compute_i32gatherd256 (s1, idx.a, 2, res_ref); |
| |
| if (check_union256i_d (res, res_ref) != 0) |
| abort (); |
| } |