blob: 63fc8c819dc91305a00c252b8d4cc6178a8b2f0d (
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
|
/* { dg-require-effective-target vect_int } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 16
__attribute__ ((noinline))
int main1 ()
{
union {
unsigned char a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
unsigned char b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
} s;
int i;
/* Initialization. */
for (i = 0; i < N; i++)
{
s.b[i] = i;
}
/* Dependence analysis fails cause s.a and s.b may overlap.
Use runtime aliasing test with versioning. */
for (i = 0; i < N; i++)
{
s.a[i] = s.b[i] + 1;
}
/* check results: */
for (i = 0; i < N; i++)
{
if (s.a[i] != i + 1)
abort ();
}
return 0;
}
int main (void)
{
check_vect ();
return main1 ();
}
/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { xfail { ia64-*-* sparc*-*-* } } } } */
/* { dg-final { scan-tree-dump "can't determine dependence between" "vect" } } */
/* { dg-final { cleanup-tree-dump "vect" } } */
|
