https://gcc.gnu.org/bugzilla/show_bug.cgi?id=951
--- Comment #16 from sandra at gcc dot gnu.org --- Given that this issue was filed >20 years ago and both the passlist and documentation have changed drastically since then, I think the originally-reported bugs are probably irrelevant and it's fine to close this issue. If there are still bugs in the internals passlist docs it would be more helpful to have specific issues for each of them (e.g., missing/incorrect docs for a particular pass or group of passes). Or, just propose a patch to improve the docs. :-)