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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - llc for Power allows illegal combinations of -mcpu and -mattr"
href="https://bugs.llvm.org/show_bug.cgi?id=38075">38075</a>
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<th>Summary</th>
<td>llc for Power allows illegal combinations of -mcpu and -mattr
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>5.0
</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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>bcrocker@redhat.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The llc command on PowerPC allows combinations of -mcpu and -mattr
that should be illegal.
For example,
% llc -mcpu=970 -mattr=+altivec,+vsx
is allowed, but the 970 is a (pre-VSX) Power ISA v2.03 CPU,
while VSX was not introduced until Power ISA v2.06.
This problem pertains both to the free-standing llc command
and to llc as invoked from the Mesa graphics library.</pre>
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