<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/67333>67333</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang 17.0.1] [Regression] Infinite loop in compile unit
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

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

<pre>
    When using clang 17.0.1 in Gentoo and compiling dev-libs/nss, an infinite loop is detected when compiling sha512.c file (downstream bug report: https://bugs.gentoo.org/914657), an issue that does not happen for same compiling unit using Clang 16.

An initial testing revealed that march=native might be causing the trouble.

In order to ease the test process, I attach the preprocessed output for that compile unit which I expect can reproduce this issue easily (remove the .txt extension)

[sha512-preprocessed.c.txt](https://github.com/llvm/llvm-project/files/12715974/sha512-preprocessed.c.txt)

</pre>
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