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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LLVM Fails to disassemble embedded rounding control"
href="http://bugs.llvm.org/show_bug.cgi?id=31955">31955</a>
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<th>Summary</th>
<td>LLVM Fails to disassemble embedded rounding control
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>keno@alumni.harvard.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The assembler seems fine, but the disassembler has trouble recognizing the
instruction:
```
./bin/llvm-mc -mattr=+avx512f -filetype=obj -o - - | ./bin/llvm-objdump -d -
vaddss {rd-sae}, %xmm28, %xmm21, %xmm31
<stdin>: file format ELF64-x86-64
Disassembly of section .text:
.text:
0: 62 01 56 30 58 <unknown>
5: fc cld
```</pre>
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