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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - optimize bitwise operations across bswap"
href="http://llvm.org/bugs/show_bug.cgi?id=15782">15782</a>
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<th>Summary</th>
<td>optimize bitwise operations across bswap
</td>
</tr>
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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
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>b.r.longbons@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Currently (using debian package of 3.3~svn177638), code like the following
cannot be optimized:
uint32_t frob(uint32_t a, uint32_t b)
{
return __builtin_bswap32(__builtin_bswap32(a) | __builtin_bswap32(b));
}</pre>
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