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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Large compile-time regression after 8b1c4e310c2f"
href="https://bugs.llvm.org/show_bug.cgi?id=48553">48553</a>
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<th>Summary</th>
<td>Large compile-time regression after 8b1c4e310c2f
</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>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<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>florian_hahn@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24302" name="attach_24302" title="slow.bc">attachment 24302</a> <a href="attachment.cgi?id=24302&action=edit" title="slow.bc">[details]</a></span>
slow.bc
After 8b1c4e310c2f the compile-time for
`MultiSource/Benchmarks/MiBench/consumer-lame` dramatically increases with -O3
& LTO.
The attached slow.bc has been reduced from the input with a time-limit of 30
seconds for opt. On current trunk, `bin/opt -O3 slow.bc` takes more than 30
seconds. With 8b1c4e310c2f reverted, it takes < 1 second.
I've not tried to run the full input until completion, so maybe it just takes a
very long time now.</pre>
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