Some rustc_middle cleanups by nnethercote · Pull Request #136465 · rust-lang/rust (original) (raw)

rustc_middle and rustc_query_system both have a file called dep_node.rs with a big comment at the top, and the comments are very similar. The one in rustc_query_system looks like the original, and the one in rustc_middle is a copy with some improvements.

This commit removes the comment from rustc_middle and updates the one in rustc_query_system to include the improvements. I did it this way because rustc_query_system is the crate that defines DepNode, and so seems like the right place for the comment.