<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 - aliasing pointer analsyis broken with 32-bit pointers"
href="https://bugs.llvm.org/show_bug.cgi?id=38113">38113</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>aliasing pointer analsyis broken with 32-bit pointers
</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>Backend: AMDGPU
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>airlied@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>radv has just started adding support for KHR_variable_pointers vulkan
extension,
however some tests are crashing in llvm with a "Pointer address space out of
range" error.
This is due to a select on 2 pointers in the 32-bit constant address space (6).
However the code in lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp checks up to
MAX_COMMON_ADDRESS which is 5 and throws the error for amdgcn. However this
looks like the code hasn't really be updated to handle 32-bit address space
pointers.
<a href="https://reviews.llvm.org/D31520">https://reviews.llvm.org/D31520</a>
was the change that added this.</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>