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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NewGVN] Assertion "Value number changed after main loop completed!" fails sometimes(!)"
href="https://bugs.llvm.org/show_bug.cgi?id=36590">36590</a>
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<th>Summary</th>
<td>[NewGVN] Assertion "Value number changed after main loop completed!" fails sometimes(!)
</td>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</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>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19995" name="attach_19995" title="preprocessed csmith program">attachment 19995</a> <a href="attachment.cgi?id=19995&action=edit" title="preprocessed csmith program">[details]</a></span>
preprocessed csmith program
This csmith program triggers the assert in NewGVN, but for some reason not
every time! Could this mean an uninitialized variable?
bin/clang -O3 -march=z13 -mllvm -enable-earlycse-memssa=false -mllvm
-enable-gvn-sink -mllvm -enable-loop-versioning-licm -mllvm -vectorize-loops
-mllvm -vectorize-slp -mllvm -enable-newgvn tc_newgvn_crash.i -o a.out -w</pre>
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