<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/86205>86205</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            riscv popcount lowering shouldn't call __muldi3/__mulsi3
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          efriedma-quic
      </td>
    </tr>
</table>

<pre>
    Consider:

```
int a(unsigned x) { return __builtin_popcount(x); }
```

With -march=rv32i, this generates a call to __mulsi3.  This is likely to be slow; if we don't have "m", we should use shifts instead.
</pre>
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