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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Wrong code/bug at -O2 on x86_64-unknown-freebsd11.0"
href="https://llvm.org/bugs/show_bug.cgi?id=30987">30987</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Wrong code/bug at -O2 on x86_64-unknown-freebsd11.0
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>FreeBSD
</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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>m@mikaelsimonsson.com
</td>
</tr>
<tr>
<th>CC</th>
<td>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=17581" name="attach_17581" title="Test case">attachment 17581</a> <a href="attachment.cgi?id=17581&action=edit" title="Test case">[details]</a></span>
Test case
Using latest snapshot of Clang on FreeBSD: 4.0.d20161003
% clang++-devel -v
clang version 4.0.0
Target: x86_64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /usr/local/llvm-devel/bin
% clang++39 -v
clang version 3.9.0 (tags/RELEASE_390/final)
Target: x86_64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /usr/local/llvm39/bin
% clang++-devel -O2 -std=c++1z -stdlib=libc++ b.cc
-O1 or lower works on both versions, -O2 or -O3 does not. Code works on gcc7
with all optimization levels.
Sorry about the large test case, tried to simplify as much as I could.
Expected output:
1
Actual output (or similar):
-121
-120
-119
No match: -121
0</pre>
</div>
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