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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Minor code gen difference betwen debug and no-debug introduced by X86FixupBWInsts"
href="https://bugs.llvm.org/show_bug.cgi?id=33867">33867</a>
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<th>Summary</th>
<td>Minor code gen difference betwen debug and no-debug introduced by X86FixupBWInsts
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
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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>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>Wolfgang_Pieb@playstation.sony.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=18825" name="attach_18825" title="Randomly generated and reduced test source">attachment 18825</a> <a href="attachment.cgi?id=18825&action=edit" title="Randomly generated and reduced test source">[details]</a></span>
Randomly generated and reduced test source
The attached C++ source exhibits a minor difference in code gen when
compiled with -g vs. without it. Not particularly important, probably
caused by the presence of DBG_VALUE instructions.
Compile with -O2 -g and with -O2 and examine the difference of the
objdump -d outputs:
37c37
< 72: 0f b7 44 24 ec movzwl -0x14(%rsp),%eax
---
<span class="quote">> 72: 66 8b 44 24 ec mov -0x14(%rsp),%ax</span ></pre>
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