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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Failure to detect pblendvb pattern"
href="https://bugs.llvm.org/show_bug.cgi?id=47404">47404</a>
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<th>Summary</th>
<td>Failure to detect pblendvb pattern
</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
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>gabravier@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
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<p>
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<pre>typedef char v16i8 __attribute__((vector_size(16)));
v16i8 blend_epi8(v16i8 x, v16i8 y, v16i8 mask)
{
v16i8 tmp = (mask < 0);
return (v16i8)((~tmp & x) | (tmp & y));
}
This can can be optimized to `return __builtin_ia32_pblendvb128(x, y, mask);`.
This transformation is done by GCC, but not by LLVM.</pre>
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