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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Infinite loop during DAG building"
href="https://bugs.llvm.org/show_bug.cgi?id=34279">34279</a>
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<th>Summary</th>
<td>Infinite loop during DAG building
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<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>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Common Code Generator Code
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<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=19026" name="attach_19026" title="reduced testcase">attachment 19026</a> <a href="attachment.cgi?id=19026&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
This is a test case that fails at -O2 but not on -O1 (Seg fault after 256
iterations somewhere).
bin/clang -cc1 -triple s390x-ibm-linux -S -target-cpu z13 -O2 -o /dev/null
./tc_iselcrash.ll</pre>
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