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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 - clang++ compilation quite slow"
href="https://bugs.llvm.org/show_bug.cgi?id=38454">38454</a>
</td>
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<tr>
<th>Summary</th>
<td>clang++ compilation quite slow
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>6.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>xuyc@sina.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>1.
the same cpp file , if compiled by clang need 4.5s, g++ only need 0.3s
[alex@c++]$time clang++ -g -std=c++11 -I/usr/include/c++/4.8.5
/home/alex/base/c++/hello.cpp -ohello.exe
real 0m4.543s
user 0m4.493s
sys 0m0.049s
[alex@c++]$time g++ -g -std=c++11 -I/usr/include/c++/4.8.5
/home/alex/base/c++/hello.cpp -ohello.exe
real 0m0.300s
user 0m0.259s
sys 0m0.042s
[alex@c++]$
2. sw:
llvm/clang 6.01
gcc 4.85</pre>
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