1 /* { dg-do compile } */
2 /* { dg-options "-O2 -funroll-loops --param max-unroll-times=8 -fpredictive-commoning -fdump-tree-pcom-details -fno-tree-pre" } */
3 
4 int a[1000], b[1000];
5 
test(void)6 void test(void)
7 {
8   int i;
9 
10   for (i = 1; i < 999; i++)
11     b[i] = (a[i + 1] + a[i] + a[i - 1]) / 3;
12 }
13 
14 /* Verify that we used 3 temporary variables for the loop.  */
15 /* { dg-final { scan-tree-dump-times "Unrolling 3 times." 1 "pcom"} } */
16