1/* { dg-do run } */ 2/* { dg-options "-mavx512f -O2" } */ 3/* { dg-require-effective-target avx512f } */ 4 5#include "avx512f-check.h" 6 7#define SCALE 2 8 9static void 10compute_gatherqpd (double *res, __mmask8 m8, long long *idx, 11 double *src, int scale, double *r) 12{ 13 int i; 14 15 for (i = 0; i < 8; i++) 16 { 17 if (m8 & (1 << i)) 18 r[i] = *(double *) (((unsigned char *) src) + idx[i] * scale); 19 else 20 r[i] = res[i]; 21 } 22} 23 24static void 25avx512f_test (void) 26{ 27 int i; 28 union512d res; 29 union512i_q idx; 30 double src[8]; 31 double res_ref[8]; 32 __mmask8 m8 = 0xC5; 33 34 res.x = _mm512_setzero_pd(); 35 36 for (i = 0; i < 8; i++) 37 { 38 src[i] = 2.718281828459045 * (i + 1) * (i + 2); 39 40 /* About to gather in reverse order, 41 divide by 2 to demonstrate scale */ 42 idx.a[i] = (64 - (i + 1) * 8) >> 1; 43 } 44 45 res.x = _mm512_mask_i64gather_pd (res.x, m8, idx.x, src, SCALE); 46 compute_gatherqpd (res.a, m8, idx.a, src, SCALE, res_ref); 47 48 if (check_union512d (res, res_ref)) 49 abort (); 50 51 res.x = _mm512_i64gather_pd (idx.x, src, SCALE); 52 compute_gatherqpd (res.a, 0xFF, idx.a, src, SCALE, res_ref); 53 54 if (check_union512d (res, res_ref)) 55 abort (); 56} 57