Viewing file:  vect-107.c (1.06 KB) -rw-r--r--
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/* { dg-require-effective-target vect_float } */
#include <stdarg.h>
#include "tree-vect.h"
#define N 16
float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
float d[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30};
__attribute__ ((noinline)) int
main1 (void)
{
int i;
float a[N];
/* Strided access. Vectorizable on platforms that support load of strided
accesses (extract of even/odd vector elements). */
for (i = 0; i < N/2; i++)
{
a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i];
}
/* Check results. */
for (i = 0; i < N/2; i++)
{
if (a[i] != b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i]
|| d[i] != b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i])
abort();
}
return 0;
}
int main (void)
{
check_vect ();
return main1 ();
}
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_strided2 } } } */
/* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" { xfail vect_strided2 } } } */
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