<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/140329>140329</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            How to implement relocation of return values
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          Tt421
      </td>
    </tr>
</table>

<pre>
    In the llvm-project of emscripten. It use `TypeIndex` in the file `/llvm-project/llvm/lib/Target/WebAssembly/WebAssemblyInstrCall.td` implement the parameter of `CALL_INDIRECT` instruction. I looked at the code briefly and found that it is indeed handling `TypeIndex` in Relocation.

If I need to implement an instruction, the return value of this instruction is related to the processing type of TypeIndex.
This instruction looks like `ref.null ht`, which `ht` is `𝑥:s33`, the return value of this instruction can be `ref x` (`𝑥` ≥ 0).

How can I modify the code of the `llvm-project` to achieve the above effect? Can you give me some implementation suggestions?
</pre>
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