1 /* { dg-do compile } */
2 /* { dg-options "-O1 -funswitch-loops -fdump-tree-unswitch-details -fdump-tree-optimized" } */
3
4 int ch;
5 int a[100];
6
xxx(void)7 void xxx(void)
8 {
9 int i;
10
11 for (i = 0; i < 100; i++)
12 {
13 if (ch)
14 a[i] = ch;
15 else
16 a[i] = i;
17 }
18 }
19
20 /* Loop should be unswitched. */
21
22 /* { dg-final { scan-tree-dump-times "Unswitching loop" 1 "unswitch" } } */
23
24 /* In effect there should be exactly three conditional jumps in the final program. */
25
26 /* { dg-final { scan-tree-dump-times "else" 3 "optimized" } } */
27