| /* { dg-do compile } */ | |
| /* Note PRE and DOM jump threading rotate the loop and blocks the sinking opportunity. */ | |
| /* { dg-options "-O2 -fno-tree-pre -fno-tree-dominator-opts -fdump-tree-sink -fdump-tree-optimized" } */ | |
| int f(int n) | |
| { | |
| int i,j=0; | |
| for (i = 0; i < 31; i++) | |
| j = __builtin_ffs(i); | |
| return j; | |
| } | |
| /* { dg-final { scan-tree-dump "Sinking j_. = __builtin_ffs" "sink1" } } */ | |
| /* { dg-final { scan-tree-dump "return 2;" "optimized" } } */ |