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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Support unqualified btr, bts"
href="http://llvm.org/bugs/show_bug.cgi?id=16588">16588</a>
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<th>Summary</th>
<td>Support unqualified btr, bts
</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>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>artagnon@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I happened to notice that linux.git uses plenty of btr and bts
instructions (not btrl, btrw, btsl, btsw). For examples, see
arch/x86/include/asm/bitops.h. LLVM barfs on these due to ambiguity,
while GNU as is fine with them. Surely, there must be architectures
where the w/l variant is unavailable? LLVM must support those
architectures, no?</pre>
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