Port #[rustc_autodiff] to the attribute parser infrastructure - #152978

Port #[rustc_autodiff] to the attribute parser infrastructure#152978

rust-bors[bot] merged 3 commits into

rust-lang:mainrust-lang/rust:mainfrom

JonathanBrouwer:autodiff_attrsJonathanBrouwer/rust:autodiff_attrsCopy head branch name to clipboard