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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ppc] vec_sel variants missing"
href="https://bugs.llvm.org/show_bug.cgi?id=46770">46770</a>
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<th>Summary</th>
<td>[ppc] vec_sel variants missing
</td>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>clang@evan.coeusgroup.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>According to the xlc documentation
(<<a href="https://www.ibm.com/support/knowledgecenter/SSXVZZ_16.1.1/com.ibm.compilers.linux.doc/compiler.pdf?view=kc">https://www.ibm.com/support/knowledgecenter/SSXVZZ_16.1.1/com.ibm.compilers.linux.doc/compiler.pdf?view=kc</a>>,
page 501), the following variants of vec_sel should be available:
vector bool long long
vec_sel(vector bool long long
vector bool long long,
vector bool long long);
vector bool long long
vec_sel(vector bool long long
vector bool long long,
vector unsigned long long);
vector signed long long
vec_sel(vector signed long long
vector signed long long,
vector bool long long);
vector signed long long
vec_sel(vector signed long long
vector signed long long,
vector unsigned long long);
vector unsigned long long
vec_sel(vector unsigned long long
vector unsigned long long,
vector bool long long);
vector unsigned long long
vec_sel(vector unsigned long long
vector unsigned long long,
vector unsigned long long);
However, in clang the only variants declared in altivec.h for 64-bit types have
vector double for the first two arguments and the return value.
Reproducing is pretty straightforward, just enable -Wvector-conversion and try
to call one of the functions. For example:
#include <altivec.h>
vector signed long long
foo(vector signed long long a,
vector signed long long b,
vector unsigned long long c) {
return vec_sel(a, b, c);
}
Here it is on Compiler Explorer: <a href="https://godbolt.org/z/x71Gnj">https://godbolt.org/z/x71Gnj</a></pre>
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