add some comments explaining why MIR opts are marked as unsound

2023-10-10 11:17:27 +02:00 · 2023-10-10 11:17:27 +02:00 · d805b265db
commit d805b265db
parent 2de454637f
3 changed files with 5 additions and 1 deletions
--- a/compiler/rustc_mir_transform/src/nrvo.rs
+++ b/compiler/rustc_mir_transform/src/nrvo.rs
@ -34,7 +34,7 @@ pub struct RenameReturnPlace;

 impl<'tcx> MirPass<'tcx> for RenameReturnPlace {
    fn is_enabled(&self, sess: &rustc_session::Session) -> bool {
-        // #111005
+        // unsound: #111005
        sess.mir_opt_level() > 0 && sess.opts.unstable_opts.unsound_mir_opts
    }