| /* { dg-do compile } */ | |
| /* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr1-details" } */ | |
| int | |
| t(int a) | |
| { | |
| int r; | |
| if (a&1) | |
| r = t(a-1); | |
| else if (a) | |
| r = t(a-2); | |
| else | |
| return 0; | |
| if (r) | |
| r=r; | |
| return r; | |
| } | |
| /* { dg-final { scan-tree-dump-times "Eliminated tail recursion" 2 "tailr1"} } */ |