`EncCursor` is a variant of `Cursor` that allows updating CLIF while keeping its encodings up to date, given a particular ISA. However, new (MachInst) backends don't use the encodings, and the `TargetIsaAdapter` shim will panic if any encoding-related method is called. This PR avoids those panics. Fixes #1809.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.