<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/123862>123862</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Generation of Object file gets stuck in infinite loop after enabling RISCVVLOptimizer
        </td>
    </tr>

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

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

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

<pre>
    I hit an issue in downstream project (IREE), where the PR to enable the RISCVVLOptimizer gets stuck in an infinite loop (i.e. after https://github.com/llvm/llvm-project/pull/119461). Reverting that seems to resolve the issue.

[module_three_fry_linked_embedded_elf_riscv_64.optimized.ll.txt](https://github.com/user-attachments/files/18498078/module_three_fry_linked_embedded_elf_riscv_64.optimized.ll.txt)

This is the output after what is effectively `opt` phase. The downstream project uses the c++ interface to emit object files, so I cant really reproduce the command line options for the hang, But there is not much secret sauce here on how it is generating the object file (https://github.com/iree-org/iree/blob/8c7eecaadda7931724aae3ac371fb60c1fb01873/compiler/plugins/target/LLVMCPU/LLVMIRPasses.cpp#L98) . If someone can give me tips on how I can try to get the equivalent command line for `llc` that mimics what is done there, I am happy to try.

@michaelmaitland  could you please provide guidance here. We have been reverting this patch downstream for a while, and it is getting hard for us to carry the revert.
</pre>
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