https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_transform/pass_manager/trait.MirPass.html
MirPass in rustc_mir_transform::pass_manager - Rust
A streamlined trait that you can implement to create a pass; the pass will be named after the type, and it will consist of a main loop that goes over each...
rustcmirtransformpassmanager