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)6void 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