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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Poor OpenSSL performance (Clang 12 vs GCC 11)"
href="https://bugs.llvm.org/show_bug.cgi?id=50586">50586</a>
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<th>Summary</th>
<td>Poor OpenSSL performance (Clang 12 vs GCC 11)
</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>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Results
<a href="https://i.imgur.com/nSn6jHU.png">https://i.imgur.com/nSn6jHU.png</a>
RSA 4096-bit performance of OpenSSL (Clang) is 54% worse than OpenSSL (GCC) on
Xeon Ice Lake.
Source:
<a href="https://www.phoronix.com/scan.php?page=article&item=clang12-gcc11-icelake&num=6">https://www.phoronix.com/scan.php?page=article&item=clang12-gcc11-icelake&num=6</a>
Benchmark is available here: <a href="https://openbenchmarking.org/test/pts/openssl">https://openbenchmarking.org/test/pts/openssl</a></pre>
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