Optimized IR:
/// @use-src 0:"input.sol"
object "C_19" {
    code {
        {
            let _1 := memoryguard(128)
            mstore(64, _1)
            if callvalue() { revert(0, 0) }
            let _2 := datasize("C_19_deployed")
            codecopy(_1, dataoffset("C_19_deployed"), _2)
            return(_1, _2)
        }
    }
    /// @use-src 0:"input.sol"
    object "C_19_deployed" {
        code {
            {
                mstore(64, 128)
                if gt(calldatasize(), 3)
                {
                    switch shr(224, calldataload(0))
                    case 0x26121ff0 {
                        if callvalue() { revert(0, 0) }
                        if slt(add(calldatasize(), not(3)), 0) { revert(0, 0) }
                        mstore(0, shl(225, 0x51616b33))
                        pop(staticcall(gas(), address(), 0, 4, 0, 0))
                        let usr$rds := returndatasize()
                        mstore(0, shl(225, 0x7fd70add))
                        pop(staticcall(gas(), address(), 0, 4, 0, 0))
                        returndatacopy(96, 0, usr$rds)
                        return(0, 0)
                    }
                    case 0xa2c2d666 { external_fun_e1() }
                    case 0xffae15ba { external_fun_e() }
                }
                revert(0, 0)
            }
            function external_fun_e1()
            {
                if callvalue() { revert(0, 0) }
                if slt(add(calldatasize(), not(3)), 0) { revert(0, 0) }
                let memPos := mload(64)
                mstore(memPos, 0x01)
                return(memPos, 32)
            }
            function external_fun_e()
            {
                if callvalue() { revert(0, 0) }
                if slt(add(calldatasize(), not(3)), 0) { revert(0, 0) }
                return(0, 0)
            }
        }
        data ".metadata" hex""
    }
}
