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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Bad machine code: Using an undefined physical register"
href="https://llvm.org/bugs/show_bug.cgi?id=31341">31341</a>
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<th>Summary</th>
<td>Bad machine code: Using an undefined physical register
</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>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: AVR
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>dylanmckay34@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>llc
~/projects/llvm-project/llvm/test/CodeGen/Generic/2003-07-29-BadConstSbyte.ll
-o /dev/null 2>&1
# In Register Scavenger
# Machine code for function main: NoPHIs, TracksLiveness, NoVRegs
*** Bad machine code: Using an undefined physical register ***
- function: main
- basic block: BB#3 loopentry (0x7fdca185bc18)
- instruction: CPIRdK
- operand 3: %SREG<imp-use,kill>
LLVM ERROR: Found 1 machine code errors.</pre>
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