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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Failure to hoist loop invariant"
href="https://llvm.org/bugs/show_bug.cgi?id=23213">23213</a>
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<th>Summary</th>
<td>Failure to hoist loop invariant
</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>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<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>bigcheesegs@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14196" name="attach_14196" title="Original C++ Code">attachment 14196</a> <a href="attachment.cgi?id=14196&action=edit" title="Original C++ Code">[details]</a></span>
Original C++ Code
LLVM fails to properly optimize the attached code from Mike Acton's talk "How
to Write Code the Compiler Can Actually Optimize".
The issue is that Foo::Bar is inlined into Foo::Baz before Foo::Bar has been
optimized, and LICM/SCEV can't handle the resulting double loop.</pre>
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