1 #include "tree-vect.h"
2 
3 extern void *memset(void *s, int c, __SIZE_TYPE__ n);
4 extern void abort (void);
5 
6 #define ASIZE 1028
7 #define HALF (ASIZE/2)
8 
main()9 int main() {
10   unsigned int array[ASIZE];
11   int i;
12 
13   check_vect ();
14 
15   memset(array, 0, sizeof(array));
16 
17   /* initialize first half of the array */
18   for (i = 0; i < HALF; i++)
19     array[i] = i;
20 
21   /* fill second half of array in by summing earlier elements of the array
22      gcc 4.5.1 and 4.5.2 incorrectly vectorize this loop!  aray[1025] is left
23      at 0 for ASIZE=1028 */
24   for (i = 0; i < HALF-1; i++)
25     array[HALF+i] = array[2*i] + array[2*i + 1];
26 
27   /* see if we have any failures */
28   for (i = 0; i < HALF - 1; i++)
29     if (array[HALF+i] != array[2*i] + array[2*i + 1])
30       abort ();
31 
32   return 0;
33 }
34 
35