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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [PowerPC] Unnecessary zero-extension for atomics"
href="https://bugs.llvm.org/show_bug.cgi?id=50217">50217</a>
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<th>Summary</th>
<td>[PowerPC] Unnecessary zero-extension for atomics
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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>All
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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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: PowerPC
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>jrtc27@jrtc27.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, nemanja.i.ibm@gmail.com
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<p>
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<pre>Many of the tests in llvm/test/CodeGen/PowerPC/atomics-i{8,16,32}-ldst.ll have
unnecessary zero-extensions. These were originally extending from i8/i16/i32 to
a full i64 register, but since <a href="https://reviews.llvm.org/D101342">https://reviews.llvm.org/D101342</a> SelectionDAG
folds away any extension to i32 (as the atomics themselves are zero-extending),
however, they all still have an unnecessary i32-to-i64 zero extension.</pre>
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