<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/91957>91957</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Miscompile with opt -passes="loop-unroll,loop-mssa(licm,indvars)" -unroll-count=4 
        </td>
    </tr>

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

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

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

<pre>
    llvm commit: e76b257483e6c
Reproduce with:
```opt -passes="loop-unroll,loop-mssa(licm,indvars)" -unroll-count=4 bbi-95405.ll -S -o -```

The input function returns 32768, but after running the passes as above we get
```
define i16 @foo() {
entry:
  br label %loop

loop: ; preds = %loop, %entry
  br i1 false, label %loop, label %end, !llvm.loop !0

end: ; preds = %loop
  ret i16 8192
}

!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.unroll.disable"}
```
So now the function returns 8192 instead.

If I extract the IR after loop-unroll or licm and run the rest of the passes instead I get the correct result.

[bbi-95405.ll.gz](https://github.com/llvm/llvm-project/files/15294896/bbi-95405.ll.gz)

</pre>
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