<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61914>61914</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang creates call to non-existant libcall for half float complex division on arm64-apple-darwin
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

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

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

<pre>
    For the program: 
```c
_Complex _Float16 f(_Complex _Float16 a, _Complex _Float16 b) {
        return a / b;
}

int main() {
 _Complex _Float16 a;
        _Complex _Float16 b;
        f(a, b);
}
```
Trying to compile this on mac leads to 
```shell
$ clang test.c
Undefined symbols for architecture arm64:
  "___divhc3", referenced from:
      _f in test-0456a9.o
ld: symbol(s) not found for architecture arm64
```

This is due to compiler-rt builtins not supporting half float for complex division, so clang relies on getting this from libgcc which is not present on mac.

The version of Clang was built from [this commit](https://github.com/llvm/llvm-project/commit/2a76429778768ed29404f0396194636e2bc11b90)
</pre>
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