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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="http://llvm.org/bugs/show_bug.cgi?id=16979">16979</a>
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<th>Summary</th>
<td>Bad machine code: Using an undefined physical register
</td>
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<th>Product</th>
<td>clang
</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>FreeBSD
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>M8R-9yw8a5@mailinator.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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<div>
<pre>1. Source code (f.c) -- to be attached.
2. Command line:
clang -fpic -O2 -fstack-protector -c f.c
3. Output -- to be attached; snippets:
*** Bad machine code: Using an undefined physical register ***
- function: do_something
- basic block: BB#2 if.then (0x2adb0740)
- instruction: TCRETURNri %vreg11, 0, <regmask>, %ESP<imp-use>, %ECX<imp-use>;
GR32_TC:%vreg11
- operand 4: %ECX<imp-use>
clang version 3.4 (trunk ^/cfe/trunk 188999)</pre>
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