This allows for experiments as in here [1] and also generally gives an option to anyone who is concerned that the extra optimization may be counterproductive or take too much time. The optimization remains enabled by default. [1] https://github.com/bytecodealliance/wasmtime/pull/4163#issuecomment-1169303683
This crate contains the metaprogram used by cranelift-codegen. It's not useful on its own.