Optimized IR:
/*=====================================================*
 *                       WARNING                       *
 *  Solidity to Yul compilation is still EXPERIMENTAL  *
 *       It can result in LOSS OF FUNDS or worse       *
 *                !USE AT YOUR OWN RISK!               *
 *=====================================================*/

/// @use-src 0:"yul_optimizer_steps/input.sol"
object "C_7" {
    code {
        {
            /// @src 0:80:112  "contract C..."
            mstore(64, 128)
            if callvalue()
            {
                revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb()
            }
            let _1 := allocate_unbounded()
            codecopy(_1, dataoffset("C_7_deployed"), datasize("C_7_deployed"))
            return(_1, datasize("C_7_deployed"))
        }
        function allocate_unbounded() -> memPtr
        { memPtr := mload(64) }
        function revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb()
        { revert(0, 0) }
    }
    /// @use-src 0:"yul_optimizer_steps/input.sol"
    object "C_7_deployed" {
        code {
            {
                /// @src 0:80:112  "contract C..."
                mstore(64, 128)
                revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74()
            }
            function revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74()
            { revert(0, 0) }
        }
        data ".metadata" hex"<BYTECODE REMOVED>"
    }
}