<html>
<head>
<base href="https://bugs.llvm.org/">
</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 - Clang hangs in "Simplify the CFG""
href="https://bugs.llvm.org/show_bug.cgi?id=35246">35246</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang hangs in "Simplify the CFG"
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19385" name="attach_19385" title="reduced testcase">attachment 19385</a> <a href="attachment.cgi?id=19385&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
Csmith discovered a program where clang just hangs at -O3, but runs at -O1.
The problem seems to be in "Simplify the CFG".
bin/clang -cc1 -triple s390x-ibm-linux -S -target-cpu z13 -v -O3 -w -emit-llvm
-x ir tc_hang.ll</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>