<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/100296>100296</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            LLVM incorrectly assumes `long double` is the same type as `_Float128` on ppc64le
        </td>
    </tr>

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

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

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

<pre>
    ```
/build/source/llvm/llvm/lib/Analysis/ConstantFolding.cpp:2129:34: error: invalid conversion from '_Float128 (*)(_Float128) noexcept' to 'long double (*)(long double)' [-fpermissive]
 2129 |         return ConstantFoldFP128(logf128, Op->getValueAPF(), Ty);
      | ^~~~~~~
      |                                  |
 |                                  _Float128 (*)(_Float128) noexcept
/build/source/llvm/llvm/lib/Analysis/ConstantFolding.cpp:1787:43: note:   initializing argument 1 of 'llvm::Constant* {anonymous}::ConstantFoldFP128(long double (*)(long double), const llvm::APFloat&, llvm::Type*)'
 1787 | Constant *ConstantFoldFP128(long double (*NativeFP)(long double),
      | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
```

`ConstantFoldFP128`'s definition:
https://github.com/llvm/llvm-project/blob/599f8e1120db8c8c7a5e42134ea52650e8fb0f1c/llvm/lib/Analysis/ConstantFolding.cpp#L1786-L1798

Where it's called with mismatched types:
https://github.com/llvm/llvm-project/blob/599f8e1120db8c8c7a5e42134ea52650e8fb0f1c/llvm/lib/Analysis/ConstantFolding.cpp#L2129
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzMVc2O4zYTfJr2hRiDav1QOuig8axO832Zw2JzDCipJXNDkQJJeeMc9tkDKvaOPUGQGSCHNAyIbv50VVdJlN6ryRDVkD9C_rSTazhaVy_OTk7OM7mv8lfadXY411Dwy48_AW8A225VegBsvV1dT4Ct1qf55qE6wLYxUp-98oDtwRofpAmt1YMy075fFkgbTLCCtEkzSBtGzlkXB8qcpFYD6605kfPKGjY6OzNA8UurrQwJlgywBGwAK8DyRxawYsbSbz0tAVCwYOMmbc3EBrt2mu623eS3hGCQPz6MC7lZea9OBPnTn4RZBMpAHNg1HIXVGXZLq33ZEJTaTuM2OrCflgdIP00Uvki9UvPSbuWrOPX5HAfp46XAFrEA5J--b_F24h8DxOGy513LP9LKf1f1RJQC0iZLo9jGBopPxpRRQUmtfldmYtJN60wmsITZcRMxlkgbSJvroYCR6aM01pxnu3oQT_cL7kV5nwcO0XU-sNdyzcvWEsAizr7mP58Xuh4jLo2PzLbuXyEwwHfC-b8M6kTty9_AeuuG73fxwzRv4iLcm7f3mvwrsIIDCs8GGjcxrIlUt-XHEBYf_2EL2E4qHNdu39v53gMPi7NfqQ_RKtpGM-RVNZaUJMiHruzLXsicMkzSjGSORc6pHDs-Jv0HTYTpcyLK4uE5EVV5S-vnIzliKmw8eqk1DeybCkc2Kz_L0B9pYOG8kP8PM4sfm91Qp0OVVnJHdSIwEVVW5PnuWCMVQpY5opTZKHjfZzmNfZUXg8j4WKU7VSPHjAvMeJaINNvnhRj5KBOU5VhWA0HGaZZK7yOsvXXTTnm_Up1wjlWx07Ij7bdLAdHQN7bNAmK8I1y9NaNbJw8Z18oH_3pMUEFT_fz85X9Mmd46R33QZya9X2fyDAp-a-uCM-VZOBLzcqZNFCa3Va_foIIza9iy9EWmabc6XX9YrQ19bPaF3qnGPwIAAP__IEgZCg">