<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/147641>147641</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Install llvm-20 release pkg and use Clang++-20 compiling a cuda kernel which calls cutlass interface, and then it success, but git clone llvm-19 and build it locally, then compile the same kernel, it failed
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          zhangzh33
      </td>
    </tr>
</table>

<pre>
    I install llvm-20 release pkg and use Clang++-20 to compile a CUDA kernel which calls cutlass interface, and it success; then I git clone llvm-19, build it locally, then compile the same kernel, but it failed, the compile error is as below:
******************************************************
clang-19: /data/llvm/clang/lib/AST/ExprClassification.cpp:72: Cl clang::Expr::ClassifyImpl(clang::ASTContext&, clang::SourceLocation*) const: Assertion `isPRValue()' failed.
</pre>
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