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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Compilation of large string map with asan and debug symbols never finishes"
href="https://llvm.org/bugs/show_bug.cgi?id=30746">30746</a>
</td>
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<tr>
<th>Summary</th>
<td>Compilation of large string map with asan and debug symbols never finishes
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>3.8
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</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>Common Code Generator Code
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>efidler@topologyinc.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=17463" name="attach_17463" title="test C++ file">attachment 17463</a> <a href="attachment.cgi?id=17463&action=edit" title="test C++ file">[details]</a></span>
test C++ file
I have a "static std::map<std::string, std::string>" with a few hundred
entries.
With Clang 3.7, a regular debug build takes 2.42s and an ASAN debug build takes
24.72s. With Clang 3.8, a regular debug build takes 2.53s and an ASAN debug
build never finishes (I gave up after waiting a few hours).
I'm testing on macOS sierra with llvm installed from homebrew, if that matters.
The closest bug I found was <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - LiveDebugValues is very slow"
href="show_bug.cgi?id=26055">https://llvm.org/bugs/show_bug.cgi?id=26055</a> but I
don't know enough about LLVM internals to know if that's really related.</pre>
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