<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 - opt -instcombine -disable-basic-aa -available-load-scan-limit=0 failing with "LLVM ERROR: Instruction Combining seems stuck in an infinite loop after 100 iterations.""
href="https://bugs.llvm.org/show_bug.cgi?id=47361">47361</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>opt -instcombine -disable-basic-aa -available-load-scan-limit=0 failing with "LLVM ERROR: Instruction Combining seems stuck in an infinite loop after 100 iterations."
</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>Linux
</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>mikael.holmen@ericsson.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23905" name="attach_23905" title="bbi-46639.ll reproducer">attachment 23905</a> <a href="attachment.cgi?id=23905&action=edit" title="bbi-46639.ll reproducer">[details]</a></span>
bbi-46639.ll reproducer
Reproduce with:
opt -instcombine -disable-basic-aa -available-load-scan-limit=0 -S -o -
bbi-46639.ll
Result:
LLVM ERROR: Instruction Combining seems stuck in an infinite loop after 100
iterations.
It passes if we just raise the number of allowed iterations to 101 with
-instcombine-infinite-loop-threshold=101
Perhaps the many iterations is just a result of making life hard for
instcombine with -disable-basic-aa -available-load-scan-limit=0, I don't know.</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>