Call

        pub const Call = struct {
            info: Info,
            attributes: FunctionAttributes,
            ty: Type,
            callee: Value,
            args_len: u32,
            //args: [args_len]Value,

            pub const Kind = enum {
                normal,
                fast,
                musttail,
                musttail_fast,
                notail,
                notail_fast,
                tail,
                tail_fast,
            };
            pub const Info = packed struct(u32) {
                call_conv: CallConv,
                has_op_bundle_cold: bool,
                _: u21 = undefined,
            };
        }