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
|
/* { dg-require-effective-target vect_float } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 256
__attribute__ ((noinline))
void bar (float *pa, float *pb, float *pc)
{
int i;
/* check results: */
#pragma GCC novector
for (i = 0; i < N; i++)
{
if (pa[i] != (pb[i] * pc[i]))
abort ();
}
return;
}
/* Unaligned pointer read accesses, aligned pointer write access.
The loop bound is known and divisible by the vectorization factor.
Can't prove that the pointers don't alias.
vect-53.c is similar to this one with one difference:
the loop bound is unknown.
vect-48.c is similar to this one with one difference:
aliasing is not a problem. */
__attribute__ ((noinline)) int
main1 (float *pb, float *pc)
{
float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
int i;
for (i = 0; i < N; i++)
{
pa[i] = pb[i] * pc[i];
}
bar (pa,pb,pc);
return 0;
}
int main (void)
{
int i;
float b[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60};
float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
check_vect ();
main1 (b,c);
main1 (&b[1],c);
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
|
