<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/145942>145942</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [NFC][HLSL][DirectX] Move parsing of root signature metadata to `RootSignatureMetdata`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            backend:DirectX,
            HLSL
      </td>
    </tr>

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

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

<pre>
    This issue tracks the non-functional change of moving all parsing logic of root signature metadata and infrastructure from `DXILRootSignature` to `Frontend/HLSL/RootSignatureMetadata`.

AC:
- [ ] Move the current logic of parsing root signature metadata into a new class interface in `RootSignatureMetadata`
- [ ] Update `DXILRootSignature` to depend on and use the metadata parsing interface provided there.
</pre>
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