b8c35ca26b
Get rid of `rustc_query_description!` **I am not entirely sure whether this is an improvement and would like to get your feedback on it.** Helps with #96524. Queries can provide an arbitrary expression for their description and their caching behavior. Before, these expressions where stored in a `rustc_query_description` macro emitted by the `rustc_queries` macro, and then used in `rustc_query_impl` to fill out the methods for the `QueryDescription` trait. Instead, we now emit two new modules from `rustc_queries` containing the functions with the expressions. `rustc_query_impl` calls these functions now instead of invoking the macro. Since we are now defining some of the functions in `rustc_middle::query`, we now need all the imports for the key types mthere as well. r? `@cjgillot`
For more information about how rustc works, see the rustc dev guide.