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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - After r311849 Loop Vectorizer generates broken code"
href="https://bugs.llvm.org/show_bug.cgi?id=34743">34743</a>
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<th>Summary</th>
<td>After r311849 Loop Vectorizer generates broken code
</td>
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<th>Product</th>
<td>tools
</td>
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<th>Version</th>
<td>trunk
</td>
</tr>
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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>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>opt
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>serguei.katkov@azul.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19203" name="attach_19203" title="Reproducer">attachment 19203</a> <a href="attachment.cgi?id=19203&action=edit" title="Reproducer">[details]</a></span>
Reproducer
After r311849 Loop Vectorizer generates a broken code.
The reproducer is attached.
to reproduce the issue I ran:
$ opt -mcpu=broadwell -loop-vectorize test.ll -S
Instruction does not dominate all uses!
%59 = sext i32 %scalar.recur to i64
%broadcast.splatinsert = insertelement <4 x i64> undef, i64 %59, i32 0
LLVM ERROR: Broken function found, compilation aborted!
Could you please fix this as soon as possible or disable the functionality
causing a regression.</pre>
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