<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 - Cannot emit physreg copy instruction"
href="https://bugs.llvm.org/show_bug.cgi?id=38545">38545</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Cannot emit physreg copy instruction
</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>define void @f() {
BB:
br label %BB5
BB5:
br i1 undef, label %BB5, label %BB1
BB1:
%A31 = alloca swifterror i32
%L7 = load i32, i32* %A31
%B30 = add i32 %L7, 2147483647
store i32 %B30, i32* %A31
br label %BB1
}
llc -mtriple=x86_64-unknown
Cannot emit physreg copy instruction
UNREACHABLE executed at
/home/simon/LLVM/llvm/lib/Target/X86/X86InstrInfo.cpp:3112!
Reduced from <a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4805">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4805</a></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>