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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - fveclib=libmvec not handling sincos"
href="https://bugs.llvm.org/show_bug.cgi?id=51530">51530</a>
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<th>Summary</th>
<td>fveclib=libmvec not handling sincos
</td>
</tr>
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<th>Product</th>
<td>OpenMP
</td>
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<th>Version</th>
<td>unspecified
</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>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Clang Compiler Support
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>xw111luoye@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>sincos is actually very frequently used when both sin and cos values are both
needed.
$ clang++ -fopenmp -fveclib=libmvec -O3 -ffast-math -march=native
sincos_simd.cpp
sincos_simd.cpp:9:5: warning: loop not vectorized: the optimizer was unable to
perform the requested transformation; the transformation might be disabled or
specified as part of an unsupported transformation ordering
[-Wpass-failed=transform-warning]
libmvec has been providing sincos for at least 5 years.
reproducers are
<a href="https://github.com/ye-luo/openmp-target/blob/master/tests/math/sincos_simd.cpp">https://github.com/ye-luo/openmp-target/blob/master/tests/math/sincos_simd.cpp</a>
<a href="https://github.com/ye-luo/openmp-target/blob/master/tests/math/sincos_simd_template.cpp">https://github.com/ye-luo/openmp-target/blob/master/tests/math/sincos_simd_template.cpp</a></pre>
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</p>
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