Viewing file:  no-vfa-vect-37.c (1.44 KB) -rw-r--r--
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/* { dg-require-effective-target vect_int } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 16
char x[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
char cb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
__attribute__ ((noinline))
int main1 (char *y)
{
struct {
char *p;
char *q;
} s;
int i;
/* Not vectorized - can't antialias the pointer s.p from the array cb. */
s.p = y;
for (i = 0; i < N; i++)
{
s.p[i] = cb[i];
}
/* check results: */
for (i = 0; i < N; i++)
{
if (s.p[i] != cb[i])
abort ();
}
/* Not vectorized - can't antialias the pointer s.p from the pointer s.q. */
s.q = cb;
for (i = 0; i < N; i++)
{
s.p[i] = s.q[i];
}
/* check results: */
for (i = 0; i < N; i++)
{
if (s.p[i] != s.q[i])
abort ();
}
return 0;
}
int main (void)
{
check_vect ();
return main1 (x);
}
/* Currently the loops fail to vectorize due to aliasing problems.
If/when the aliasing problems are resolved, unalignment may
prevent vectorization on some targets. */
/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "can't determine dependence" 2 "vect" { target { ! vect_multiple_sizes } } } } */
/* { dg-final { scan-tree-dump "can't determine dependence" "vect" { target vect_multiple_sizes } } } */
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