<html>
<head>
<base href="https://llvm.org/bugs/" />
</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 --- - reject invariant hoisting when the load cannot be de-referenced (execution context is empty)"
href="https://llvm.org/bugs/show_bug.cgi?id=28193">28193</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>reject invariant hoisting when the load cannot be de-referenced (execution context is empty)
</td>
</tr>
<tr>
<th>Product</th>
<td>Polly
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>polly-dev@googlegroups.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zinob@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Should Polly reject Scops when the execution context is empty?
There are two polly unit tests:
Polly :: Isl/CodeGen/phi_in_exit_early_lnt_failure_3.ll
Polly :: ScopInfo/non-precise-inv-load-5.ll
To my understanding there are two scenarios when execution context is empty:
1) Polly discovers the load is never executed. this case is ok.
2) the load cannot be de-referenced.
I have a test that exhibit this scenario.
May be we can distinguish these scenarios and reject the second.</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>