Depends on how your local government handles it. In America, talking about suicide is a freely open topic and is not considered hate speech. However, there have been numerous instances of foreign countries punishing people for posting things on American sites as the concept of "freedom of speech" does not exist in that country (or the government is super corrupt).
DISCLAIMER: I am not a lawyer and if you are looking for real, actual legal advice you should consult an attorney from your country.