| /* { dg-do run } */ |
| /* { dg-options "-mavx512f -O2" } */ |
| /* { dg-require-effective-target avx512f } */ |
| |
| #include "avx512f-check.h" |
| |
| #define SCALE 2 |
| |
| static void |
| compute_gatherqpd (double *res, __mmask8 m8, long long *idx, |
| double *src, int scale, double *r) |
| { |
| int i; |
| |
| for (i = 0; i < 8; i++) |
| { |
| if (m8 & (1 << i)) |
| r[i] = *(double *) (((unsigned char *) src) + idx[i] * scale); |
| else |
| r[i] = res[i]; |
| } |
| } |
| |
| static void |
| avx512f_test (void) |
| { |
| int i; |
| union512d res; |
| union512i_q idx; |
| double src[8]; |
| double res_ref[8]; |
| __mmask8 m8 = 0xC5; |
| |
| res.x = _mm512_setzero_pd(); |
| |
| for (i = 0; i < 8; i++) |
| { |
| src[i] = 2.718281828459045 * (i + 1) * (i + 2); |
| |
| /* About to gather in reverse order, |
| divide by 2 to demonstrate scale */ |
| idx.a[i] = (64 - (i + 1) * 8) >> 1; |
| } |
| |
| res.x = _mm512_mask_i64gather_pd (res.x, m8, idx.x, src, SCALE); |
| compute_gatherqpd (res.a, m8, idx.a, src, SCALE, res_ref); |
| |
| if (check_union512d (res, res_ref)) |
| abort (); |
| |
| res.x = _mm512_i64gather_pd (idx.x, src, SCALE); |
| compute_gatherqpd (res.a, 0xFF, idx.a, src, SCALE, res_ref); |
| |
| if (check_union512d (res, res_ref)) |
| abort (); |
| } |