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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [LoopVersioningLICM] "Incoming value isn't loop invariant" assert in LoopVectorizer fails."
href="https://bugs.llvm.org/show_bug.cgi?id=36983">36983</a>
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<th>Summary</th>
<td>[LoopVersioningLICM] "Incoming value isn't loop invariant" assert in LoopVectorizer fails.
</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>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Scalar Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre>Created <span class=""><a href="attachment.cgi?id=20153" name="attach_20153" title="reduced testcase">attachment 20153</a> <a href="attachment.cgi?id=20153&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
bin/opt -mtriple=s390x-linux-gnu -mcpu=z13 ./tc_loopverlicm.ll -S -o /dev/null
-O3 -enable-loop-versioning-licm
When LoopVersioningLICM is run, LoopVectorizer detects an error in the original
(input) loop:
void llvm::InnerLoopVectorizer::fixLCSSAPHIs(): Assertion
`OrigLoop->isLoopInvariant(LCSSAPhi.getIncomingValue(0)) && "Incoming value
isn't loop invariant"' failed.</pre>
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