blob: 0d181dfec24a212d430a1cac493ee914ebe25325 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* { dg-require-effective-target vect_float } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 40
#define M 128
float in[N+M];
float coeff[M];
float out[N];
float fir_out[N];
/* Should be vectorized. Fixed misaligment in the inner-loop. */
__attribute__ ((noinline))
void foo (){
int i,j,k;
float diff;
for (i = 0; i < N; i++) {
out[i] = 0;
}
for (k = 0; k < 4; k++) {
for (i = 0; i < N; i++) {
diff = 0;
for (j = k; j < M; j+=4) {
diff += in[j+i]*coeff[j];
}
out[i] += diff;
}
}
}
/* Vectorized. Changing misalignment in the inner-loop. */
__attribute__ ((noinline))
void fir (){
int i,j,k;
float diff;
for (i = 0; i < N; i++) {
diff = 0;
for (j = 0; j < M; j++) {
diff += in[j+i]*coeff[j];
}
fir_out[i] = diff;
}
}
int main (void)
{
check_vect ();
int i, j;
float diff;
for (i = 0; i < M; i++)
coeff[i] = i;
for (i = 0; i < N+M; i++)
in[i] = i;
foo ();
fir ();
for (i = 0; i < N; i++) {
if (out[i] != fir_out[i])
abort ();
}
return 0;
}
/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
|
