<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/107723>107723</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Consolidate `StrCmpOptionName` duplicate functions in OptEmitter.cpp and OptTable.cpp
        </td>
    </tr>

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

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

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

<pre>
    Both files contain function to do a *almost* case-insensitive lexicographic comparison, but there is one subtle difference:

1. The one in OptTable.cpp considers 2 strings of same length identical if they are identical case-insensitive-ly. The one in OptEmitter.cpp considers such strings as order per their case-sensitive comparison (with a call to strcmp(A,B))

Performance/code wise, the one in OptTable.cpp seems better as it uses StringRef and its API to do most of the work.

This bug is to consolidate the 2 functions to be identical as well as share the functions as well.
</pre>
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