The trait had only one implementation: the `Lower` struct. It is easier to just use that directly, and not introduce unnecessary layers of generics and abstractions. Once upon a time, there was hope that we would have other implementations of the `LowerCtx` trait, that did things like lower CLIF to SMTLIB for verification. However, this is not practical these days given the way that the trait has evolved over time, and our verification efforts are focused on ISLE now anyways, and we're actually making some progress on that front (much more than anyone ever did on a second `LowerCtx` trait implementation!)
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.