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 8static void 9compute_i64gatherps256 (float *s1, long long *s2, int scale, float *r) 10{ 11 int i; 12 13 for (i = 0; i < 4; ++i) 14 r[i] = *(float *) (((unsigned char *) s1) + s2[i] * scale); 15} 16 17void static 18avx2_test (void) 19{ 20 int i; 21 union256i_q idx; 22 union128 res; 23 float s1[8], res_ref[4] = { 0 }; 24 25 for (i = 0; i < 4; ++i) 26 { 27 /* Set some stuff */ 28 s1[i] = 2.718281828459045 * (i + 1) * (i + 2); 29 30 /* About to gather in reverse order, 31 divide by 2 to demonstrate scale */ 32 idx.a[i] = (16 - (i + 1) * 4) >> 1; 33 } 34 35 res.x = _mm256_i64gather_ps (s1, idx.x, 2); 36 37 compute_i64gatherps256 (s1, idx.a, 2, res_ref); 38 39 if (check_union128 (res, res_ref) != 0) 40 abort (); 41} 42