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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - AggressiveAntiDepBreaker.cpp:574: bool llvm::AggressiveAntiDepBreaker::FindSuitableFreeRegisters(unsigned int, llvm::AggressiveAntiDepBreaker::RenameOrderType&, std::map<unsigned int, unsigned int>&): Assertion `IsSub && "Expecting group subregister"' fai"
href="http://llvm.org/bugs/show_bug.cgi?id=18663">18663</a>
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<th>Summary</th>
<td>AggressiveAntiDepBreaker.cpp:574: bool llvm::AggressiveAntiDepBreaker::FindSuitableFreeRegisters(unsigned int, llvm::AggressiveAntiDepBreaker::RenameOrderType&, std::map<unsigned int, unsigned int>&): Assertion `IsSub && "Expecting group subregister"' fai
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<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>
</tr>
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<th>Component</th>
<td>Common Code Generator Code
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>hfinkel@anl.gov
</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>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11973" name="attach_11973" title="bugpoint reduced test case">attachment 11973</a> <a href="attachment.cgi?id=11973&action=edit" title="bugpoint reduced test case">[details]</a></span>
bugpoint reduced test case
The aggressive anti-dep breaker fails on the attached (bugpoint-reduced) input:
llc -mcpu=a2 aab-ppc-a2-bugpoint-reduced-simplified.ll
AggressiveAntiDepBreaker.cpp:574: bool
llvm::AggressiveAntiDepBreaker::FindSuitableFreeRegisters(unsigned int,
llvm::AggressiveAntiDepBreaker::RenameOrderType&, std::map<unsigned int,
unsigned int>&): Assertion `IsSub && "Expecting group subregister"' failed.
...
2. Running pass 'Post RA top-down list latency scheduler' on function
'@_ZN4Foam3CSVINS_6VectorIdEEE4readEv'</pre>
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