<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/128063>128063</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [HLSL] Semantic matching not case insensitive
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          llvm-beanz
      </td>
    </tr>
</table>

<pre>
    The HLSL semantic parsing for system values seems to not be correctly case insensitive. The following code fails to compile with Clang, but compiles fine with DXC.

```hlsl
[numthreads(1,1,1)]
void main(uint I : SV_DispatchThreadId) {}
```
[CE](https://godbolt.org/z/sjKGf8sKr)
</pre>
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