Viewing file:  vect-strided-float.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*2] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93};
float c[N*2] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};
__attribute__ ((noinline)) int
main1 (void)
{
int i;
float a[N*2];
/* Strided access pattern. */
for (i = 0; i < N/2; i++)
{
a[i*2] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
a[i*2+1] = b[2*i+8] * c[2*i+9] + b[2*i+9] * c[2*i+8];
}
/* Check results. */
for (i = 0; i < N/2; i++)
{
if (a[i*2] != b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i]
|| a[i*2+1] != b[2*i+8] * c[2*i+9] + b[2*i+9] * c[2*i+8])
abort();
}
return 0;
}
int main (void)
{
check_vect ();
return main1 ();
}
/* Needs interleaving support. */
/* { 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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