<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] VPERMI2W/VPERMT2W port assignment in SKX scheduler model disagrees with IACA"
href="https://bugs.llvm.org/show_bug.cgi?id=35714">35714</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[X86] VPERMI2W/VPERMT2W port assignment in SKX scheduler model disagrees with IACA
</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>All
</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>craig.topper@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The scheduler model shows one uop on port 0/1/5 and two on port 5. But IACA
says its one port 0 uop and two port 5 uops. I don't know which is correct.
def SKXWriteResGroup97 : SchedWriteRes<[SKXPort5,SKXPort015]> {
let Latency = 7;
let NumMicroOps = 3;
let ResourceCycles = [2,1];
}
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMI2W128rr(b?)(k?)(z?)")>;
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMI2W256rr(b?)(k?)(z?)")>;
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMI2Wrr(b?)(k?)(z?)")>;
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMT2W128rr(b?)(k?)(z?)")>;
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMT2W256rr(b?)(k?)(z?)")>;
def: InstRW<[SKXWriteResGroup97], (instregex "VPERMT2Wrr(b?)(k?)(z?)")>;</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>