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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - GDLParser.cpp compiles excessively slowly on clang++ from Xcode 5 and llvm 3.4svn when compiled at -O2 or higher"
href="http://llvm.org/bugs/show_bug.cgi?id=17855">17855</a>
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<th>Summary</th>
<td>GDLParser.cpp compiles excessively slowly on clang++ from Xcode 5 and llvm 3.4svn when compiled at -O2 or higher
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>howarth@nitro.med.uc.edu
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11502" name="attach_11502" title="preprocessed source for src/GDLParser.cpp generated by Apple clang++ 5.0">attachment 11502</a> <a href="attachment.cgi?id=11502&action=edit" title="preprocessed source for src/GDLParser.cpp generated by Apple clang++ 5.0">[details]</a></span>
preprocessed source for src/GDLParser.cpp generated by Apple clang++ 5.0
The GDLParser.cpp and GDLTreeParser.cpp files from gdl-0.9.4/src are compiled
extremely slowly under clang++ from Xcode 5.0.1 and llvm 3.4svn at -O2. Using
the attached GDLParser.ii.bz2 with llvm 3.4svn's clang++ on
x86_64-apple-darwin12, I see…
% time /sw/opt/llvm-3.4/bin/clang++ -O2 -c GDLParser.ii
101.615u 0.577s 1:42.29 99.8% 0+0k 2+12io 627pf+0w
% time /sw/opt/llvm-3.4/bin/clang++ -O1 -c GDLParser.ii
3.858u 0.095s 0:03.96 99.4% 0+0k 0+15io 7pf+0w
These tests were done on a 2009 MacPro with dual quad-Xeon processors and 12Gb
of memory.</pre>
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