<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/84088>84088</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [flang] COMPLEX(16) parameters/returns are not supported for aarch64
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            flang,
            flang:codegen
      </td>
    </tr>

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

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

<pre>
    `test-suite::gfortran-regression-compile-regression__pr36006-2_f90.test` started failing after https://github.com/llvm/llvm-project/pull/83874

It used to report `not yet implemented: no math runtime available for 'EXP(COMPLEX(KIND=16))'`, but this was not considered as failure.  Now it fails with
```
not yet implemented: complex for this precision for return type
LLVM ERROR: aborting
```

COMPLEX(16) ABI support is needed in https://github.com/llvm/llvm-project/blob/e77a473601314cc7e7aa912579982a38326d334c/flang/lib/Optimizer/CodeGen/Target.cpp#L730
</pre>
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