1 /* { dg-require-effective-target vect_float } */
2
3 #include "tree-vect.h"
4
5 void __attribute__((noinline,noclone))
downscale_2(const float * src,int src_n,float * dst)6 downscale_2 (const float* src, int src_n, float* dst)
7 {
8 int i;
9
10 for (i = 0; i < src_n; i += 2) {
11 const float* a = src;
12 const float* b = src + 4;
13
14 dst[0] = (a[0] + b[0]) / 2;
15 dst[1] = (a[1] + b[1]) / 2;
16 dst[2] = (a[2] + b[2]) / 2;
17 dst[3] = (a[3] + b[3]) / 2;
18
19 src += 2 * 4;
20 dst += 4;
21 }
22 }
23
main()24 int main ()
25 {
26 const float in[4 * 4] = {
27 1, 2, 3, 4,
28 5, 6, 7, 8,
29
30 1, 2, 3, 4,
31 5, 6, 7, 8
32 };
33 float out[2 * 4];
34
35 check_vect ();
36
37 downscale_2 (in, 4, out);
38
39 if (out[0] != 3 || out[1] != 4 || out[2] != 5 || out[3] != 6
40 || out[4] != 3 || out[5] != 4 || out[6] != 5 || out[7] != 6)
41 __builtin_abort ();
42
43 return 0;
44 }
45
46 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
47