<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 - [ValueTracking] Can't make a non-negative value negative"
href="https://bugs.llvm.org/show_bug.cgi?id=35769">35769</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[ValueTracking] Can't make a non-negative value negative
</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>Common Code Generator Code
</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>Reduced from: <a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4729">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4729</a>
opt -instcombine
define i32 @bar4(i32 %a) {
%and = and i32 %a, 7
%C2 = icmp sle i32 %and, -2147483648
tail call void @llvm.assume(i1 %C2)
store i1 %C2, i1* undef
ret i32 -2147483648
}
declare void @llvm.assume(i1) nounwind
Craig - this looks like it came from D32651/rL301747</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>