const Callee = union(enum)
const Callee = union(enum) {
field: struct {
/// A *pointer* to the object the field is fetched on, so that we can
/// promote the lvalue to an address if the first parameter requires it.
obj_ptr: Zir.Inst.Ref,
/// Offset into `string_bytes`.
field_name_start: Zir.NullTerminatedString,
},
direct: Zir.Inst.Ref,
}