<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/144006>144006</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            llvm.ldexp.f128 lowering hits assertion failure on arm64 windows
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          efriedma-quic
      </td>
    </tr>
</table>

<pre>
    ```
$ llc -mtriple=aarch64-windows-msvc
define void @f7(ptr %p, i32 %a) {
  %val = load fp128, ptr %p
  %call = tail call fast fp128 @llvm.ldexp.f128(fp128 %val, i32 %a)
  store fp128 %call, ptr %p
  ret void
}

        .def "@feat.00";
        .scl    3;
        .type   0;
        .endef
 .globl  "@feat.00"
"@feat.00" = 0
        .file   "<stdin>"
llc: [...]llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:985: void (anonymous namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDNode *): Assertion `(TLI.getTypeAction(*DAG.getContext(), Op.getValueType()) == TargetLowering::TypeLegal || Op.getOpcode() == ISD::TargetConstant || Op.getOpcode() == ISD::Register) && "Unexpected illegal type!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
```
</pre>
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