Both cranelift-codegen and wasmtime-debug need to map Cranelift registers to Gimli registers. Previously both crates had an almost-identical `map_reg` implementation. This change: - removes the wasmtime-debug implementation - improves the cranelift-codegen implementation with custom errors - exposes map_reg in `cranelift_codegen::isa::fde::map_reg` and subsequently `wasmtime_environ::isa::fde::map_reg`
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.