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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - MachineInstr verification error with sub-reg liveness enabled in R600 backend" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D23720&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=teKY6m-yv1QdMml8wvGeeawr30kNFXOAYXLdKPxQ1Oo&s=iszHZy85WWM5p7fyEohENhkwdZqpJiT7RLUYgRh3jlk&e=">23720</a>
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<th>Summary</th>
<td>MachineInstr verification error with sub-reg liveness enabled in R600 backend
</td>
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<th>Product</th>
<td>libraries
</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>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Register Allocator
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>tstellar@gmail.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14413" name="attach_14413" title="Reduced test case">attachment 14413</a> <a href="attachment.cgi?id=14413&action=edit" title="Reduced test case">[details]</a></span>
Reduced test case
This bug can be reproduced by applying the attached patch to enable sub-reg
liveness and running the attached test case with llc:
./llc -verify-machineinstrs -march=amdgcn r600-sub-reg-liveness-crash.ll -o -</pre>
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