<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] Missing UD1 and UD2 Opcodes"
href="https://bugs.llvm.org/show_bug.cgi?id=35624">35624</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[X86] Missing UD1 and UD2 Opcodes
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>llvm-dev@redking.me.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The AMD APM vol3 mentions UD0 and UD1 undefined opcodes as well as UD2:
UD0 0F FF Raise an invalid opcode exception
UD1 0F B9 /r Raise an invalid opcode exception
UD2 0F 0B Raise an invalid opcode exception.
We seem to support UD2, and UD1 is supported as the UD2B instruction (although
without the payload) but we don't seem to have anything that matches UD0.
The Intel docs only mention UD2.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>