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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion `SE->DT.dominates(ENT.ExitingBlock, Latch) && "We should only have known counts for exiting blocks that dominate " "latch!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=37205">37205</a>
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<th>Summary</th>
<td>Assertion `SE->DT.dominates(ENT.ExitingBlock, Latch) && "We should only have known counts for exiting blocks that dominate " "latch!"' failed.
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>unspecified
</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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>mikael.holmen@ericsson.com
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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=20210" name="attach_20210" title="reproducer">attachment 20210</a> <a href="attachment.cgi?id=20210&action=edit" title="reproducer">[details]</a></span>
reproducer
Running
opt -S -o - tr15910.ll -indvars -verify -loop-rotate -loop-idiom
gives
opt: ../lib/Analysis/ScalarEvolution.cpp:6675: const llvm::SCEV
*llvm::ScalarEvolution::BackedgeTakenInfo::getExact(const llvm::Loop *,
llvm::ScalarEvolution *, llvm::SCEVUnionPredicate *) const: Assertion
`SE->DT.dominates(ENT.ExitingBlock, Latch) && "We should only have known counts
for exiting blocks that dominate " "latch!"' failed.
Stack dump:
0. Program arguments: opt -S -o - tr15910.ll -indvars -verify -loop-rotate
-loop-idiom
1. Running pass 'Function Pass Manager' on module 'tr15910.ll'.
2. Running pass 'Loop Pass Manager' on function '@f1'
3. Running pass 'Recognize loop idioms' on basic block '%lbl1'
Note that the "-verify" is indeed needed for it to crash (in loop-idiom).</pre>
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