1 /* { dg-do compile } */
3 /* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
5 /* Test for predictive commoning of expressions, without reassociation. */
9 int a
[1000], b
[1000], c
[1000];
15 for (i
= 0; i
< 1000; i
++)
18 for (i
= 1; i
< 998; i
++)
19 c
[i
] = a
[i
+ 2] * b
[i
+ 1] - b
[i
- 1] * a
[i
];
21 for (i
= 1; i
< 998; i
++)
22 if (c
[i
] != 4 * i
+ 2)
28 /* { dg-final { scan-tree-dump-times "Combination" 1 "pcom"} } */
29 /* { dg-final { scan-tree-dump-times "Unrolling 3 times." 1 "pcom"} } */
30 /* { dg-final { cleanup-tree-dump "pcom" } } */