<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 - Assertion tripped in GVN: "Replacing constants with constants is inval""
href="https://bugs.llvm.org/show_bug.cgi?id=34908">34908</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion tripped in GVN: "Replacing constants with constants is inval"
</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>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alex@crichton.co
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>When compiling the following IR
define i1 @foo() {
call void @llvm.assume(i1 undef)
ret i1 undef
}
declare void @llvm.assume(i1)
The GVN pass will crash with an assertion when assertions are enabled
$ opt -S foo.ll -gvn
opt: /home/alex/code/rust2/src/llvm/lib/Transforms/Scalar/GVN.cpp:1509: bool
llvm::GVN::replaceOperandsWithConsts(llvm::Instruction*) const: Assertion
`!isa<Constant>(Operand) && "Replacing constants with constants is invalid"'
failed.</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>