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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SelectionDAG] Loop in SelectionDAG (DAGCombiner)"
href="https://bugs.llvm.org/show_bug.cgi?id=43971">43971</a>
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<th>Summary</th>
<td>[SelectionDAG] Loop in SelectionDAG (DAGCombiner)
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Common Code Generator Code
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>Wolfgang_Pieb@playstation.sony.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22794" name="attach_22794" title="Test case.">attachment 22794</a> <a href="attachment.cgi?id=22794&action=edit" title="Test case.">[details]</a></span>
Test case.
The attached IR, when compiled with llc at -O2, causes SelectionDAG to loop,
apparently caused by DAGCombiner. The following commit seems to be the cause:
commit a1e5ef3fd424c105e5c1a4c310bde8b3b2c222c6
Author: Amaury Sechet <<a href="mailto:deadalnix@gmail.com">deadalnix@gmail.com</a>>
Date: Tue Aug 27 11:06:09 2019 +0000
[DAGCombiner] Add node to the worklist in topological order after
relegalization.</pre>
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