<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylk8mO2zAMhp_GvhA1HMWOm4MPaQYDzKUoOn0BLbStgSy5WhKkT19KyaALeisgyBZE_vy4SDh1G18sVIf2xRpt0X_hIVT7Ey23Rb3qH_h6Pp_CzUqyqdgZ4oIeQQfgIN26oo3ZvH2q2ved7O6rHAEq9kwLPruIZArfFgSbVoEe3AQbxYOVWz6jD1C0LaIKEB14XLm2FMaGyCnOn3pksHm8EADRhIQBrjoud0FNHj5lOB41uRM1j6RnbuAsLPyi7ZwzgcBX_Ev3dyKYnC92BSQuHrlq_pnmfT8RbNoM5sxSAML2qIBCx4UqppLPcXPhFBLNReM1Wwa3InD1xmVOplxyq7KUUbZiQ4TvSUeEGWOBoYJYlDmxBl61ldSOCAFxLVUTCMrJknyJZoEX24zBQelcS3LBaSKN3FFyvuZQ2XN2TmWRZBX1I2aMHFHbmNFyNTYXInodb02txr067o-85ikuzo90YQz3XEqtyLxO3oxLjFsZqFLcmTqUREODQwdjLu-fD5t3bwXn-d5L-unZxwOrl5FJFKzvuo71A-7YwPv2iH3ft6JvD63Y1YYLNGGs-k8VY6vRnsJJ55FOVf9U_z-DHlnLdjvGupb2ljUHzo6DklJMUrAOWdW1eVRNk3Ua5-faj0VSpDnQpaGih1-XNGB6pil_IH_VF_RDOzx4o44Gx9Mq9JwcDdHjlVEP4PFGgef3-HgnkiquJy3LoNeFfCzYPwHLNEbf>52862</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Ambiguous comment in Inliner async needs clarification
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            mlir:core
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
            River707
      </td>
    </tr>

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

<pre>
    In `InlinerPass::optimizeSCCAsync`, there is a comment:

```
  // Note: The number of pass managers here needs to remain constant
  // to prevent issues with pass instrumentations that rely on having the same
  // pass manager for the main thread.
```

A couple of us stared at this during a code review of some adjacent code and couldn't quite get the connection. Since it seems to be documenting an action at a distance effect, it would be good to understand the intent for posterity.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJxtUsmO2zAM_Rr7QtTwKIuTgw9pBgPMpSg6_QFaom0NZMnVkiD9-lJKBl1QwFAiiHwbOTh1618tVPv21RptyX_FEKrNiT-3Rr3on_R2Pp_CzUquqcQZ4kyeQAdAkG5ZyMZc3j5X7cfJdfevXAEq8cIffHGRuBS-zwQ2LQN5cCOszAcLWpzIByjYlkgFiA48Lagt09gQkXn-xuOC1dOFBbCakCjAVcf5Dqi5w6csDqPmdlaNkfHMDZyFGS_aTtkJBFzoH9w_FcHofKkrQuLsCVXzX5v388Ri02ooO0sBWLYnBUwdZ05MJZ95c3CKWM1F0zVXBrcQoHpHmc2UR7QqQxllK9FF-JF0JJgoFjEciCWZjTXwpq3kcUQIREtJbSBQThbzhc0CltosA0HpnCW30DgyRp4oN18zVe6cnFMZJFnF84hZRmbUNmZpOY3VhUhex1tTq36jjpsj1lFHQ_1pGfSUHPt-LAa3wWOtAPMKPUYrDXo9allmUydv-jnGtaxdGcHEc0xDwyh8Meby8fNp9e69iH65T5z_7MRhL-q5b8cNbeQ4qv1hT0c8KCk62VK3FYdWtB3WBgcyoa92nyshFqM900nniW_V7rnWvWjF05MQ25bPVjR7FMdOSTmMchBbEtW2zetomqykcX6qfV9EDWkK_Gg42PD7kZdIT2z3QfhNX8h3bfdgwxRn53tO0nAWKKVWnFddXPXF0i_AUTJw">