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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Remove register allocator bug workaround"
href="https://bugs.llvm.org/show_bug.cgi?id=38224">38224</a>
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<th>Summary</th>
<td>Remove register allocator bug workaround
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
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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
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: AVR
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>me@dylanmckay.io
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The register allocator does not handle certain functions that use the
'LDDWRdPtrQ' instructions which have high register pressure.
The error message is:
LLVM ERROR: ran out of registers during register allocation
In order to work around this, we restricted the allowable registers of
LDDWRdPtrQ to disallow Z.
First noticed in <a href="https://github.com/avr-rust/rust/issues/37">https://github.com/avr-rust/rust/issues/37</a></pre>
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