<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylksFunDAQhp_GXEaLwAZ2c-Cw6SpSpEqJ2tyrAQ_gxNgI27vat-9AVbXNtRLCg8f6_PnHndf39ltyzrgRphiXINRZyCd-RhNiPpo4pS7v_cwzznyYnseu6auaaiLsC0VDOehTJVWtTmXdU4cVxGn1aZxANIW1PRxeCq5gpZBsDGAcoANy0axk70DzEu8wJNdH452QX-A2GUtgIgh5DpNPVnMBE14JcGO-zwsEij9CxEiiKl6_vvFsLoqLKM6_3s8Rbn79CDAYR3DjU_gU2YtAd2N-RZto28mv__SYEtHYTRad84xnoxwYhjb4z8Rt-WHAEA8mkBXqsp0yz3Sr9IN6wAwTk9d2Ty1Lq20_5_tXtNZefw-HZfXv1Ef-NCEkClzUSlYqm1qFWh-3tEkqXcjyWJZaI9KxKSWWg8wsdmRDK-pHIaWjG-wIrkV9yf7fwLSykLIot42rUjU56eHY6WY4YT0UPQ38N2jmCPONk_t1zNZ2R3ZpDNy0fKnCnyaGYEZHtAuzYTTRUvvGAOjRWphNYLuFr4OG7g5PHPbzd7LZrtXuTj8BnxTldQ>53243</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Tail call miscompiled by FastISel
        </td>
    </tr>

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

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

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

<pre>
    Running https://gist.github.com/nikic/b6c45e5eeac03ef1fd842353815ceba4 through `llc -O0` results in an entirely empty function, while it *should* have a `jmp set_state@PLT`.

It works fine without the dbg.value, or without the `tail` annotation. It also works fine with `-fast-isel=0`.
</pre>
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