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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [AVX-512] llc generates incorrect code for @llvm.x86.avx.hadd.ps.256"
href="https://llvm.org/bugs/show_bug.cgi?id=25318">25318</a>
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<th>Summary</th>
<td>[AVX-512] llc generates incorrect code for @llvm.x86.avx.hadd.ps.256
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</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>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>llc
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>Vsevolod.Livinskij@frtk.ru
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15163" name="attach_15163" title="Reproducer.">attachment 15163</a> <a href="attachment.cgi?id=15163&action=edit" title="Reproducer.">[details]</a></span>
Reproducer.
llc generates incorrect code for @llvm.x86.avx.hadd.ps.256 with -mcpu=knl
option. With -mcpu=core-avx2 everything works fine.
Compile:
llc -mcpu=knl test.ll -o test.s
clang++ -march=knl test.s main.cpp
Run:
sde -knl -- a.out
clang version is trunk 250620</pre>
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