<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/151248>151248</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Tail merging removes the lines from DWARF line program
        </td>
    </tr>

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

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

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

<pre>
    Godbolt https://godbolt.org/z/9bxdxccn4

llvm-dwarfdump --debug-line [o3.txt](https://github.com/user-attachments/files/21498341/o3.txt)

#65667 may be related. But in this case, there exist instructions to prepare for different arguments before reaching the call, can line entries point to those instructions?
</pre>
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