Viewing file:  vect-60.c (2.36 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* Disabling epilogues until we find a better way to deal with scans. */
/* { dg-additional-options "--param vect-epilogues-nomask=0" } */
/* { 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: */
for (i = 0; i < N/2; i++)
{
if (pa[i] != (pb[i+1] * pc[i+1]))
abort ();
}
return;
}
/* Unaligned pointer read accesses, aligned write access.
The loop bound is unknown
No aliasing problems.
vect-52.c is similar to this one with one difference:
the alignment of the read accesses is unknown.
vect-56.c is similar to this one with one difference:
the loop bound is known.
vect-61.c is similar to this one with two differences:
aliasing is not a problem, and the write access has unknown alignment. */
float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
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};
__attribute__ ((noinline)) int
main1 (int n)
{
int i;
float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
float *pa = a;
float *pb = b;
float *pc = c;
for (i = 0; i < n/2; i++)
{
pa[i] = pb[i+1] * pc[i+1];
}
/* check results: */
for (i = 0; i < N/2; i++)
{
if (pa[i] != (pb[i+1] * pc[i+1]))
abort ();
}
return 0;
}
int main (void)
{
int i;
int n=N;
check_vect ();
main1 (n);
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 2 "vect" { target { ! vect_element_align } xfail { ! vect_unaligned_possible } } } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { target { vect_element_align } xfail { ! vect_unaligned_possible } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" { target { { ! vect_element_align } || vect_element_align_preferred } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" { target { vect_element_align && { ! vect_element_align_preferred } } } } } */
|
