<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/150983>150983</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [flang][OpenMP] Composite simd with if clause ICE without -fopenmp-version=52
        </td>
    </tr>

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

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

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

<pre>
    With a program like the following:
```
program main
  !$omp do simd if(.true.)
  do i=1, 10
  end do
  !$omp end do simd
end program
```
Compiling it with `flang -fopenmp -fopenmp-version=52 foo.f90` works as expected. 
Compiling it with `flang -fopenmp foo.f90` results in an ICE.

```
flang: ~/llvm/llvm-project/flang/lib/Lower/OpenMP/Decomposer.cpp:87: ConstructQueue Fortran::lower::omp::buildConstructQueue(mlir::ModuleOp, Fortran::semantics::SemanticsContext &, Fortran::lower::pft::Evaluation &, const parser::CharBlock &, llvm::omp::Directive, const List<Clause> &): Assertion `!decompose.output.empty() && "Construct decomposition failed"' failed.
```
</pre>
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