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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - After r342578, excessive compile time building opencollada"
href="https://bugs.llvm.org/show_bug.cgi?id=40986">40986</a>
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<th>Summary</th>
<td>After r342578, excessive compile time building opencollada
</td>
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<th>Product</th>
<td>new-bugs
</td>
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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>All
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<th>Status</th>
<td>NEW
</td>
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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>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>dimitry@andric.com
</td>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=21571" name="attach_21571" title="Unreduced test case for opencollada compiler hang">attachment 21571</a> <a href="attachment.cgi?id=21571&action=edit" title="Unreduced test case for opencollada compiler hang">[details]</a></span>
Unreduced test case for opencollada compiler hang
As reported in <a href="https://bugs.freebsd.org/236313">https://bugs.freebsd.org/236313</a>, building the opencollada port
(see also <<a href="https://github.com/KhronosGroup/OpenCOLLADA">https://github.com/KhronosGroup/OpenCOLLADA</a>>) takes an excessive
amount of compile time when -O2 is enabled.
Bisection shows this increase in compile time was introduced by
<a href="https://reviews.llvm.org/rL342578">https://reviews.llvm.org/rL342578</a> ("[X86] Handle COPYs of physregs better
(regalloc hints)").
I'm attaching the full original test case (8.9M .cpp file, ~231k lines) for
now, since reducing it is rather time consuming.</pre>
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