<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 - Trying to compile an OpenCL through LLVM IR triggers "Cannot cast between two non-generic address spaces""
href="https://bugs.llvm.org/show_bug.cgi?id=47610">47610</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Trying to compile an OpenCL through LLVM IR triggers "Cannot cast between two non-generic address spaces"
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>11.0
</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>Backend: PTX
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>emmanuel.attia@philips.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Hi all,
* I try to compile this simple test.cl file:
--------
kernel void toto(global float * output, local int * param)
{
output[*param] = 0;
}
-------
Note: "local" can be replaced by constant
* Using these command line:
clang -emit-llvm -S -target nvptx test.cl -o test.ll
llvm-link test.ll -o test.bc
clang -target nvptx test.bc -S -o test.ptx
(Obviously later to link with libclc .bc files)
* I have this error:
fatal error: error in backend: Cannot cast between two non-generic address
spaces
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -target nvptx test.bc -S -o test.ptx
1. Code generation
2. Running pass 'Function Pass Manager' on module 'test.bc'.
3. Running pass 'NVPTX DAG->DAG Pattern Instruction Selection' on function
'@toto'
* Tested with:
clang-9 from Ubuntu 18.04
clang-10.0.1 build from llvm-project git
clang-11-rc2 build from llvm-project git
clang-12-sycl build from intel's llvm git
Note that:
clang -S -target nvptx test.cl -o test.ptx
works perfectly (but doesn't allow to link with nvptx--nvidiacl.bc from libclc)
Am I doing something wrong ?</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>