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This allows us to retain richer information from backend errors. We already have `anyhow` as a dep in several places in the wasmtime tree, and in cranelift-faerie. faerie is the only user of this variant. Existing code that puts a String into the Backend error can trivially adapt their code to emit an anyhow::Error.
This crate provides module-level functionality, which allow multiple functions and data to be emitted with Cranelift and then linked together.
This crate is structured as an optional layer on top of cranelift-codegen. It provides additional functionality, such as linking, however users that require greater flexibility don't need to use it.
A Module is a collection of functions and data objects that are linked
together. Backend is a trait that defines an interface for backends
that compile modules into various forms. Most users will use one of the
following Backend implementations:
SimpleJITBackend, provided by cranelift-simplejit, which JITs code to memory for direct execution.ObjectBackend, provided by cranelift-object, which emits native object files.FaerieBackend, provided by cranelift-faerie, which emits native object files.