1 /* { dg-do run } */
2 /* { dg-require-effective-target avx2 } */
3 /* { dg-options "-O2 -mavx2" } */
4
5 #include <string.h>
6 #include "avx2-check.h"
7
8 static void
compute_i64gatherpd(double * s1,long long * s2,int scale,double * r)9 compute_i64gatherpd (double *s1, long long *s2, int scale, double *r)
10 {
11 int i;
12
13 for (i = 0; i < 2; ++i)
14 r[i] = *(double *) (((unsigned char *) s1) + s2[i] * scale);
15 }
16
17 void static
avx2_test(void)18 avx2_test (void)
19 {
20 int i;
21 union128i_q idx;
22 union128d res;
23 double s1[2], res_ref[2] = { 0 };
24
25 for (i = 0; i < 2; ++i)
26 {
27 /* Set some stuff */
28 s1[i] = 2.718281828459045 * (i + 1) * (i + 2);
29
30 /* About to gather in reverse order, divide by 2 to demonstrate scale */
31 idx.a[i] = (16 - (i + 1) * 8) >> 1;
32 }
33
34 res.x = _mm_i64gather_pd (s1, idx.x, 2);
35
36 compute_i64gatherpd (s1, idx.a, 2, res_ref);
37
38 if (check_union128d (res, res_ref) != 0)
39 abort ();
40 }
41