<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/98729>98729</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Should recent Apple CPUs use the new model instead of `CycloneModel`?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            question,
            backend:AArch64
      </td>
    </tr>

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

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

<pre>
    We recently discovered a performance issue with the apple m1 series in https://github.com/rust-lang/rust/issues/126937#issuecomment-2226834122. I believe this is due to EarlyIfConversion using an outdated mispredict penalty. The mispredict penalty from apple-a7 to apple-m4 uses `CycloneModel`'s definition of 16, which I assume is an outdated value?

cc @fhahn @TNorthover
</pre>
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