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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Cleanup: Don't emit DBG_VALUEs after copies in SelectionDAG"
href="https://bugs.llvm.org/show_bug.cgi?id=46848">46848</a>
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<th>Summary</th>
<td>Cleanup: Don't emit DBG_VALUEs after copies in SelectionDAG
</td>
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<th>Product</th>
<td>libraries
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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>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>DebugInfo
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>tbosch1009@gmail.com
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<th>CC</th>
<td>jdevlieghere@apple.com, keith.walker@arm.com, llvm-bugs@lists.llvm.org, paul_robinson@playstation.sony.com
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<pre>Currently, SelectionDAG emits DBG_VALUEs after every copy for a parameter.
However, it should be the job of LiveDebugValues::transferRegisterCopy to track
when a copy introduces a backup location for a variable, /not/ the job of the
instruction selector.
For more details, see <a class="bz_bug_link
bz_status_CONFIRMED "
title="CONFIRMED - [DebugInfo] Lifetime of function arguments is too short in optimized code."
href="show_bug.cgi?id=39715#c34">https://bugs.llvm.org/show_bug.cgi?id=39715#c34</a> and
following comments.</pre>
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