IR:

/// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
object "C_2" {
    code {
        /// @src 0:265:278  "contract C {}"
        mstore(64, memoryguard(128))
        if callvalue() { revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() }

        constructor_C_2()

        let _1 := allocate_unbounded()
        codecopy(_1, dataoffset("C_2_deployed"), datasize("C_2_deployed"))

        return(_1, datasize("C_2_deployed"))

        function allocate_unbounded() -> memPtr {
            memPtr := mload(64)
        }

        function revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() {
            revert(0, 0)
        }

        /// @src 0:265:278  "contract C {}"
        function constructor_C_2() {

            /// @src 0:265:278  "contract C {}"

        }
        /// @src 0:265:278  "contract C {}"

    }
    /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
    object "C_2_deployed" {
        code {
            /// @src 0:265:278  "contract C {}"
            mstore(64, memoryguard(128))

            revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74()

            function shift_right_224_unsigned(value) -> newValue {
                newValue :=

                shr(224, value)

            }

            function allocate_unbounded() -> memPtr {
                memPtr := mload(64)
            }

            function revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74() {
                revert(0, 0)
            }

        }

        data ".metadata" hex"<BYTECODE REMOVED>"
    }

}


Optimized IR:
/// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
object "C_2" {
    code {
        {
            /// @src 0:265:278  "contract C {}"
            let _1 := memoryguard(0x80)
            mstore(64, _1)
            if callvalue() { revert(0, 0) }
            let _2 := datasize("C_2_deployed")
            codecopy(_1, dataoffset("C_2_deployed"), _2)
            return(_1, _2)
        }
    }
    /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
    object "C_2_deployed" {
        code {
            {
                /// @src 0:265:278  "contract C {}"
                revert(0, 0)
            }
        }
        data ".metadata" hex"<BYTECODE REMOVED>"
    }
}

IR:

/// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
object "D_27" {
    code {
        /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
        mstore(64, memoryguard(128))
        if callvalue() { revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() }

        constructor_D_27()

        let _1 := allocate_unbounded()
        codecopy(_1, dataoffset("D_27_deployed"), datasize("D_27_deployed"))

        return(_1, datasize("D_27_deployed"))

        function allocate_unbounded() -> memPtr {
            memPtr := mload(64)
        }

        function revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() {
            revert(0, 0)
        }

        /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
        function constructor_D_27() {

            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."

        }
        /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."

    }
    /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
    object "D_27_deployed" {
        code {
            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
            mstore(64, memoryguard(128))

            if iszero(lt(calldatasize(), 4))
            {
                let selector := shift_right_224_unsigned(calldataload(0))
                switch selector

                case 0x26121ff0
                {
                    // f()

                    external_fun_f_26()
                }

                default {}
            }

            revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74()

            function shift_right_224_unsigned(value) -> newValue {
                newValue :=

                shr(224, value)

            }

            function allocate_unbounded() -> memPtr {
                memPtr := mload(64)
            }

            function revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() {
                revert(0, 0)
            }

            function revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() {
                revert(0, 0)
            }

            function abi_decode_tuple_(headStart, dataEnd)   {
                if slt(sub(dataEnd, headStart), 0) { revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() }

            }

            function array_length_t_string_memory_ptr(value) -> length {

                length := mload(value)

            }

            function array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length) -> updated_pos {
                mstore(pos, length)
                updated_pos := add(pos, 0x20)
            }

            function copy_memory_to_memory_with_cleanup(src, dst, length) {
                let i := 0
                for { } lt(i, length) { i := add(i, 32) }
                {
                    mstore(add(dst, i), mload(add(src, i)))
                }
                mstore(add(dst, length), 0)
            }

            function round_up_to_mul_of_32(value) -> result {
                result := and(add(value, 31), not(31))
            }

            function abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value, pos) -> end {
                let length := array_length_t_string_memory_ptr(value)
                pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length)
                copy_memory_to_memory_with_cleanup(add(value, 0x20), pos, length)
                end := add(pos, round_up_to_mul_of_32(length))
            }

            function abi_encode_tuple_t_string_memory_ptr__to_t_string_memory_ptr__fromStack(headStart , value0) -> tail {
                tail := add(headStart, 32)

                mstore(add(headStart, 0), sub(tail, headStart))
                tail := abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value0,  tail)

            }

            function external_fun_f_26() {

                if callvalue() { revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() }
                abi_decode_tuple_(4, calldatasize())
                let ret_0 :=  fun_f_26()
                let memPos := allocate_unbounded()
                let memEnd := abi_encode_tuple_t_string_memory_ptr__to_t_string_memory_ptr__fromStack(memPos , ret_0)
                return(memPos, sub(memEnd, memPos))

            }

            function revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74() {
                revert(0, 0)
            }

            function zero_value_for_split_t_string_memory_ptr() -> ret {
                ret := 96
            }

            function panic_error_0x41() {
                mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)
                mstore(4, 0x41)
                revert(0, 0x24)
            }

            function abi_encode_tuple__to__fromStack(headStart ) -> tail {
                tail := add(headStart, 0)

            }

            function revert_forward_1() {
                let pos := allocate_unbounded()
                returndatacopy(pos, 0, returndatasize())
                revert(pos, returndatasize())
            }

            function finalize_allocation(memPtr, size) {
                let newFreePtr := add(memPtr, round_up_to_mul_of_32(size))
                // protect against overflow
                if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }
                mstore(64, newFreePtr)
            }

            function allocate_memory(size) -> memPtr {
                memPtr := allocate_unbounded()
                finalize_allocation(memPtr, size)
            }

            function array_allocation_size_t_string_memory_ptr(length) -> size {
                // Make sure we can allocate memory without overflow
                if gt(length, 0xffffffffffffffff) { panic_error_0x41() }

                size := round_up_to_mul_of_32(length)

                // add length slot
                size := add(size, 0x20)

            }

            function allocate_memory_array_t_string_memory_ptr(length) -> memPtr {
                let allocSize := array_allocation_size_t_string_memory_ptr(length)
                memPtr := allocate_memory(allocSize)

                mstore(memPtr, length)

            }

            function store_literal_in_memory_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50(memPtr) {

                mstore(add(memPtr, 0), "/*")

            }

            function copy_literal_to_memory_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50() -> memPtr {
                memPtr := allocate_memory_array_t_string_memory_ptr(2)
                store_literal_in_memory_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50(add(memPtr, 32))
            }

            function convert_t_stringliteral_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50_to_t_string_memory_ptr() -> converted {
                converted := copy_literal_to_memory_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50()
            }

            function store_literal_in_memory_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b(memPtr) {

                mstore(add(memPtr, 0), 0x2f2a2a204073726320303a39363a313635202022636f6e74726163742044207b)

                mstore(add(memPtr, 32), 0x2e2e2e22202a2f00000000000000000000000000000000000000000000000000)

            }

            function copy_literal_to_memory_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b() -> memPtr {
                memPtr := allocate_memory_array_t_string_memory_ptr(39)
                store_literal_in_memory_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b(add(memPtr, 32))
            }

            function convert_t_stringliteral_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b_to_t_string_memory_ptr() -> converted {
                converted := copy_literal_to_memory_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b()
            }

            /// @ast-id 26
            /// @src 0:336:597  "function f() /* @use-src 0:\"input.sol\", 1:\"#utility.yul\" @ast-id 15 *\/ public returns (string memory) { C c = new /// @src 0:149:156  \"new C()\"..."
            function fun_f_26() -> var__5_mpos {
                /// @src 0:423:436  "string memory"
                let zero_t_string_memory_ptr_1_mpos := zero_value_for_split_t_string_memory_ptr()
                var__5_mpos := zero_t_string_memory_ptr_1_mpos

                /// @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..."
                let _2 := allocate_unbounded()
                let _3 := add(_2, datasize("C_2"))
                if or(gt(_3, 0xffffffffffffffff), lt(_3, _2)) { panic_error_0x41() }
                datacopy(_2, dataoffset("C_2"), datasize("C_2"))
                _3 := abi_encode_tuple__to__fromStack(_3)

                let expr_13_address := create(0, _2, sub(_3, _2))

                if iszero(expr_13_address) { revert_forward_1() }

                /// @src 0:440:491  "C c = new /// @src 0:149:156  \"new C()\"..."
                let var_c_9_address := expr_13_address
                /// @src 0:493:494  "c"
                let _4_address := var_c_9_address
                let expr_15_address := _4_address
                /// @src 0:504:526  "string memory s = \"/*\""
                let var_s_18_mpos := convert_t_stringliteral_c077635d0709aa1fd7cea2045028c270f982d687d1647e48e759eec32ec54a50_to_t_string_memory_ptr()
                /// @src 0:528:529  "s"
                let _5_mpos := var_s_18_mpos
                let expr_21_mpos := _5_mpos
                /// @src 0:531:581  "return \"/** @src 0:96:165  \\\"contract D {...\\\" *\/\""
                var__5_mpos := convert_t_stringliteral_5bde9a896e3f09acac1496d16642fcdd887d2a000bf1ab18bdff3f17b91e320b_to_t_string_memory_ptr()
                leave

            }
            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."

        }

        /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
        object "C_2" {
            code {
                /// @src 0:265:278  "contract C {}"
                mstore(64, memoryguard(128))
                if callvalue() { revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() }

                constructor_C_2()

                let _1 := allocate_unbounded()
                codecopy(_1, dataoffset("C_2_deployed"), datasize("C_2_deployed"))

                return(_1, datasize("C_2_deployed"))

                function allocate_unbounded() -> memPtr {
                    memPtr := mload(64)
                }

                function revert_error_ca66f745a3ce8ff40e2ccaf1ad45db7774001b90d25810abd9040049be7bf4bb() {
                    revert(0, 0)
                }

                /// @src 0:265:278  "contract C {}"
                function constructor_C_2() {

                    /// @src 0:265:278  "contract C {}"

                }
                /// @src 0:265:278  "contract C {}"

            }
            /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
            object "C_2_deployed" {
                code {
                    /// @src 0:265:278  "contract C {}"
                    mstore(64, memoryguard(128))

                    revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74()

                    function shift_right_224_unsigned(value) -> newValue {
                        newValue :=

                        shr(224, value)

                    }

                    function allocate_unbounded() -> memPtr {
                        memPtr := mload(64)
                    }

                    function revert_error_42b3090547df1d2001c96683413b8cf91c1b902ef5e3cb8d9f6f304cf7446f74() {
                        revert(0, 0)
                    }

                }

                data ".metadata" hex"<BYTECODE REMOVED>"
            }

        }

        data ".metadata" hex"<BYTECODE REMOVED>"
    }

}


Optimized IR:
/// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
object "D_27" {
    code {
        {
            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
            let _1 := memoryguard(0x80)
            mstore(64, _1)
            if callvalue() { revert(0, 0) }
            let _2 := datasize("D_27_deployed")
            codecopy(_1, dataoffset("D_27_deployed"), _2)
            return(_1, _2)
        }
    }
    /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
    object "D_27_deployed" {
        code {
            {
                /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
                let _1 := memoryguard(0x80)
                let _2 := 64
                mstore(_2, _1)
                if iszero(lt(calldatasize(), 4))
                {
                    let _3 := 0
                    if eq(0x26121ff0, shr(224, calldataload(_3)))
                    {
                        if callvalue() { revert(_3, _3) }
                        if slt(add(calldatasize(), not(3)), _3) { revert(_3, _3) }
                        /// @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..."
                        let _4 := datasize("C_2")
                        let _5 := add(_1, _4)
                        let _6 := 0xffffffffffffffff
                        if or(gt(_5, _6), lt(_5, _1))
                        {
                            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
                            mstore(_3, shl(224, 0x4e487b71))
                            mstore(4, 0x41)
                            revert(_3, 0x24)
                        }
                        /// @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..."
                        datacopy(_1, dataoffset("C_2"), _4)
                        if iszero(create(/** @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..." */ _3, /** @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..." */ _1, sub(_5, _1)))
                        {
                            /// @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..."
                            let pos := mload(_2)
                            returndatacopy(pos, _3, returndatasize())
                            revert(pos, returndatasize())
                        }
                        let memPtr := mload(_2)
                        let newFreePtr := add(memPtr, _2)
                        if or(gt(newFreePtr, /** @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..." */ _6), /** @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..." */ lt(newFreePtr, memPtr))
                        {
                            mstore(_3, shl(224, 0x4e487b71))
                            mstore(4, 0x41)
                            revert(_3, 0x24)
                        }
                        mstore(_2, newFreePtr)
                        mstore(memPtr, 2)
                        let _7 := 32
                        mstore(add(memPtr, _7), "/*")
                        let memPtr_1 := mload(_2)
                        let newFreePtr_1 := add(memPtr_1, 96)
                        if or(gt(newFreePtr_1, /** @src 0:446:491  "new /// @src 0:149:156  \"new C()\"..." */ _6), /** @src 0:279:599  "contract D /** @src 0:96:165  \"contract D {...\" *\/ {..." */ lt(newFreePtr_1, memPtr_1))
                        {
                            mstore(_3, shl(224, 0x4e487b71))
                            mstore(4, 0x41)
                            revert(_3, 0x24)
                        }
                        mstore(_2, newFreePtr_1)
                        mstore(memPtr_1, 39)
                        mstore(add(memPtr_1, _7), 0x2f2a2a204073726320303a39363a313635202022636f6e74726163742044207b)
                        mstore(add(memPtr_1, _2), shl(200, 0x2e2e2e22202a2f))
                        let memPos := mload(_2)
                        mstore(memPos, _7)
                        let length := mload(memPtr_1)
                        mstore(add(memPos, _7), length)
                        let i := _3
                        for { } lt(i, length) { i := add(i, _7) }
                        {
                            mstore(add(add(memPos, i), _2), mload(add(add(memPtr_1, i), _7)))
                        }
                        mstore(add(add(memPos, length), _2), _3)
                        return(memPos, add(sub(add(memPos, and(add(length, 31), not(31))), memPos), _2))
                    }
                }
                revert(0, 0)
            }
        }
        /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
        object "C_2" {
            code {
                {
                    /// @src 0:265:278  "contract C {}"
                    let _1 := memoryguard(0x80)
                    mstore(64, _1)
                    if callvalue() { revert(0, 0) }
                    let _2 := datasize("C_2_deployed")
                    codecopy(_1, dataoffset("C_2_deployed"), _2)
                    return(_1, _2)
                }
            }
            /// @use-src 0:"debug_info_in_yul_snippet_escaping/input.sol"
            object "C_2_deployed" {
                code {
                    {
                        /// @src 0:265:278  "contract C {}"
                        revert(0, 0)
                    }
                }
                data ".metadata" hex"<BYTECODE REMOVED>"
            }
        }
        data ".metadata" hex"<BYTECODE REMOVED>"
    }
}
