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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang is 36.5 times slower than gcc"
href="https://llvm.org/bugs/show_bug.cgi?id=29160">29160</a>
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<th>Summary</th>
<td>clang is 36.5 times slower than gcc
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mikhail.strelnikov@gmail.com
</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=17056" name="attach_17056" title="Use -DCHUNKS=N where N from 1 to 42">attachment 17056</a> <a href="attachment.cgi?id=17056&action=edit" title="Use -DCHUNKS=N where N from 1 to 42">[details]</a></span>
Use -DCHUNKS=N where N from 1 to 42
It takes >2 minutes to compile attached source.cpp (when -DCHUNKS=28) by clang
but only 3.5 seconds to compile by gcc.
This wouldn't be a huge problem, but this is rather simplified version -
original took over an hour to compile.</pre>
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