[Bug c++/52067] force sibling call optimization

[trashyankes at wp dot pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52067

--- Comment #2 from trashyankes at wp dot pl 2012-01-31 17:04:10 UTC ---
(In reply to comment #1)
> I suppose you would want to annotate a specific call, not necessarily _all_
> calls to loop (those from main).

Im interested in calls from `loop<T>(int)`. I want guarantee that all
`return something_else();` calls in function to be sibling calls.