<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/85547>85547</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [LoopUnroll / SCEV]  crash (infinite recursion?)
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            loopoptim,
            crash-on-valid
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          JonPsson1
      </td>
    </tr>
</table>

<pre>
    ```
opt -mtriple=s390x-unknown-linux -mcpu=z16 ./tc_loopunroll_crash.ll -o /dev/null -O3 -unroll-count=4

...
#250 0x0000000003589124 llvm::ScalarEvolution::createNodeForSelectOrPHIInstWithICmpInstCond(llvm::Type*, llvm::ICmpInst*, llvm::Value*, llvm::Value*)
#251 0x0000000003589760 llvm::ScalarEvolution::createNodeForSelectOrPHI(llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*)
#252 0x00000000035899fe llvm::ScalarEvolution::createNodeFromSelectLikePHI(llvm::PHINode*)
#253 0x000000000355db0c llvm::ScalarEvolution::createNodeForPHI(llvm::PHINode*)
#254 0x000000000355fb92 llvm::ScalarEvolution::createSCEVIter(llvm::Value*)
#255 0x00000000035899ce llvm::ScalarEvolution::createNodeFromSelectLikePHI(llvm::PHINode*)
Segmentation fault (core dumped) 

```

[tc_looopunroll_crash.tar.gz](https://github.com/llvm/llvm-project/files/14624945/tc_looopunroll_crash.tar.gz)

? @modiking @skachkov-sc @boxu-zhang 
</pre>
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