<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/123801>123801</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [HLSL] Implement default constant buffer `$Globals`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            HLSL
      </td>
    </tr>

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

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

<pre>
    All non-resource variable declarations in the global scope are implicitly added to `$Global` constant buffer.

In Sema we need to recognize these declarations and assign them `hlsl_constant` address space. At the end of Sema we will probably need to generate an implicit `HLSLBufferDecl` for the `$Globals` constant buffer and create its layout struct. Then we need to add support for this implicit buffer in codegen, making sure the code is generated in a similar way as other `cbuffer`s.
</pre>
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