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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - opt -O3 crashes with Assertion `NewL->getParentLoop() == ParentL && "All of the new loops must be siblings of the current loop!"' failed. with new PM"
href="https://bugs.llvm.org/show_bug.cgi?id=49185">49185</a>
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<th>Summary</th>
<td>opt -O3 crashes with Assertion `NewL->getParentLoop() == ParentL && "All of the new loops must be siblings of the current loop!"' failed. with new PM
</td>
</tr>
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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>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Loop Optimizer
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mikael.holmen@ericsson.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24526" name="attach_24526" title="bbi-52864.ll reproducer">attachment 24526</a> <a href="attachment.cgi?id=24526&action=edit" title="bbi-52864.ll reproducer">[details]</a></span>
bbi-52864.ll reproducer
Reproduce with:
opt -unswitch-threshold=100 -O3 -S -o - bbi-52864.ll
Result:
opt: ../include/llvm/Transforms/Scalar/LoopPassManager.h:311: void
llvm::LPMUpdater::addSiblingLoops(ArrayRef<llvm::Loop *>): Assertion
`NewL->getParentLoop() == ParentL && "All of the new loops must be siblings of
the current loop!"' failed.
It doesn't crash with -enable-new-pm=0</pre>
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