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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Simplifycfg not taking effect"
href="https://llvm.org/bugs/show_bug.cgi?id=24885">24885</a>
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<tr>
<th>Summary</th>
<td>Simplifycfg not taking effect
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>3.7
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>russell.wallace@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14909" name="attach_14909" title="Source and IR files">attachment 14909</a> <a href="attachment.cgi?id=14909&action=edit" title="Source and IR files">[details]</a></span>
Source and IR files
Compiling and optimizing a simple function with a pair of loops, using clang
-O3 or opt -O3 or both, produces IR in which the third block is empty, whereas
simplifycfg should have removed it.
The simplifycfg pass itself is working, because opt -simplifycfg does remove
the block.
Source file and the different IR versions attached.</pre>
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