<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - significant performance drop compared to G++"
href="https://bugs.llvm.org/show_bug.cgi?id=40705">40705</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>significant performance drop compared to G++
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
<tr>
<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>leonardoizzi96@icloud.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=21472" name="attach_21472" title="These are the benchmarks from Apple's clang++, clang++ bundled with LLVM 7 and G++8">attachment 21472</a> <a href="attachment.cgi?id=21472&action=edit" title="These are the benchmarks from Apple's clang++, clang++ bundled with LLVM 7 and G++8">[details]</a></span>
These are the benchmarks from Apple's clang++, clang++ bundled with LLVM 7 and
G++8
Hello.
I've noticed that when compiling the ReaderWriterQueue project
(<a href="https://github.com/cameron314/readerwriterqueue">https://github.com/cameron314/readerwriterqueue</a>) with clang++, there a ~50%
drop in performance compared to the results I get with G++ 8.
In attachment you can find the results from the benchmark I've run.
I tried both with the clang++'s version bundled in Xcode and the one available
from your site and I got the same results.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>