Viewing file:  no-vfa-vect-43.c (1.9 KB) -rw-r--r--
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/* { 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; i++)
{
if (pa[i] != (pb[i] * pc[i]))
abort ();
}
return;
}
__attribute__ ((noinline)) int
main1 (float *pa, float *pb, float *pc)
{
int i;
float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
for (i = 0; i < N; i++)
{
b[i] = pb[i];
c[i] = pc[i];
}
/* Vectorizable: pa may not alias pb and/or pc, even though their
addresses escape. &pa would need to escape to point to escaped memory. */
for (i = 0; i < N; i++)
{
pa[i] = b[i] * c[i];
}
bar (pa,b,c);
return 0;
}
__attribute__ ((noinline)) int
main2 (float *pa, float *pb, float *pc)
{
int i;
float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
for (i = 0; i < N; i++)
{
b[i] = pb[i];
c[i] = pc[i];
}
/* Vectorizable: pb and pc addresses do not escape. */
for (i = 0; i < N; i++)
{
pa[i] = b[i] * c[i];
}
/* check results: */
for (i = 0; i < N; i++)
{
if (pa[i] != (b[i] * c[i]))
abort ();
}
return 0;
}
int main (void)
{
int i;
float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
check_vect ();
main1 (a,b,c);
main2 (a,b,c);
return 0;
}
/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 2 "vect" } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 6 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
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