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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - SLSR pass takes too long on simple programs"
href="https://llvm.org/bugs/show_bug.cgi?id=28721">28721</a>
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<th>Summary</th>
<td>SLSR pass takes too long on simple programs
</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>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>tstellar@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=16810" name="attach_16810" title="Reduced test case">attachment 16810</a> <a href="attachment.cgi?id=16810&action=edit" title="Reduced test case">[details]</a></span>
Reduced test case
Attached is an reduced test case which takes about ~9 seconds for the
straight-line scalar reduction (SLSR) pass on my very fast CPU. I think this
is too long given that the test case only has around 60 instructions.
To reproduce:
opt -slsr -mtriple=amdgcn--amdhsa -mcpu=fiji slsr-reduced.ll</pre>
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