The biggest change is the split from FunctionIndex to DefinedFuncIndex to FuncIndex. Take better advantage of this by converting several Vecs to PrimaryMaps. Also, table_addr can now handle indices of the table index type, so we don't need to explicitly uextend them anymore.
This is the wasmtime-environ crate, which contains the implementations
of the ModuleEnvironment and FuncEnvironment traits from
cranelift-wasm. They effectively
implement an ABI for basic wasm compilation, which can be used for JITing,
native object files, or other purposes.