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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - r289696 regressed TSan runtime library codegen"
href="https://llvm.org/bugs/show_bug.cgi?id=31382">31382</a>
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<th>Summary</th>
<td>r289696 regressed TSan runtime library codegen
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<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>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>Interprocedural Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eugeni.stepanov@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=17756" name="attach_17756" title="unminimized test case">attachment 17756</a> <a href="attachment.cgi?id=17756&action=edit" title="unminimized test case">[details]</a></span>
unminimized test case
<a href="http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-autoconf/builds/2442">http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-autoconf/builds/2442</a>
with r289696 one particularly hot function in the tsan runtime library has 6
spills instead of 5.
Test case (2.ii attached):
clang++ -std=c++11 -fPIE -O3 -o 1.o -c 2.ii && objdump -drl 1.o | grep -A 10
'__tsan_read1>:'</pre>
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