<html>
<head>
<base href="https://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - mregparm=3 causes 'ran out of registers during register allocation'"
href="https://llvm.org/bugs/show_bug.cgi?id=27176">27176</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>mregparm=3 causes 'ran out of registers during register allocation'
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.8
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++11
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>js@alien8.de
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16146" name="attach_16146" title="Preprocessed source that triggers the error">attachment 16146</a> <a href="attachment.cgi?id=16146&action=edit" title="Preprocessed source that triggers the error">[details]</a></span>
Preprocessed source that triggers the error
With the attached source the command below triggers a fatal error in clang (ran
out of registers during register allocation). This was reproduced using clang
3.7 from Fedora 23 and clang 3.8 (Fedora 23 x86_64) from
<a href="http://llvm.org/releases/download.html">http://llvm.org/releases/download.html</a>
% clang++ -mregparm=3 -m32 -std=c++11 -O1 -c crash.cpp
fatal error: error in backend: ran out of registers during register allocation
clang-3.8: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 3.8.0 (tags/RELEASE_380/final)
Target: i386-unknown-linux-gnu
Thread model: posix
InstalledDir: /tmp/clang+llvm-3.8.0-x86_64-fedora23/bin
clang-3.8: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang-3.8: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.8: note: diagnostic msg: /tmp/crash-10f03c.cpp
clang-3.8: note: diagnostic msg: /tmp/crash-10f03c.sh
clang-3.8: note: diagnostic msg:</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>