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
9 static void
compute_gatherdps(float * res,__mmask16 m16,int * idx,float * src,int scale,float * r)10 compute_gatherdps (float *res, __mmask16 m16, int *idx,
11 float *src, int scale, float *r)
12 {
13 int i;
14
15 for (i = 0; i < 16; i++)
16 {
17 if (m16 & (1 << i))
18 r[i] = *(float *) (((unsigned char *) src) + idx[i] * scale);
19 else
20 r[i] = res[i];
21 }
22 }
23
24 static void
avx512f_test(void)25 avx512f_test (void)
26 {
27 int i;
28 union512 res;
29 union512i_d idx;
30 float src[16];
31 float res_ref[16];
32 __mmask16 m16 = 0xBC5D;
33
34 res.x = _mm512_setzero_ps();
35
36 for (i = 0; i < 16; 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) * 4) >> 1;
43 }
44
45 res.x = _mm512_mask_i32gather_ps (res.x, m16, idx.x, src, SCALE);
46 compute_gatherdps (res.a, m16, idx.a, src, SCALE, res_ref);
47
48 if (check_union512 (res, res_ref))
49 abort ();
50
51 res.x = _mm512_i32gather_ps (idx.x, src, SCALE);
52 compute_gatherdps (res.a, 0xFFFF, idx.a, src, SCALE, res_ref);
53
54 if (check_union512 (res, res_ref))
55 abort ();
56 }
57