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<div class="moz-cite-prefix">On 06/19/2017 04:37 AM, Yuanfeng Peng
via llvm-dev wrote:<br>
</div>
<blockquote cite="mid:tencent_69DEB73019D4252032FBF5B5@qq.com"
type="cite">
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<div>Hi Lorenz,</div>
<div><br>
</div>
<div>Thanks for letting me know! It seems that relocatable device
code for CUDA isn't being taken care of by anyone in the LLVM
developers community now,</div>
</blockquote>
<br>
As I understand it, this is not exactly true. Relocatable device
code is necessary for OpenMP offloading support, and essentially
works in that context, we just don't currently have an option to
enable it in CUDA mode. Hopefully, some of the folks from IBM who
have been working on this can comment.<br>
<br>
-Hal<br>
<br>
<blockquote cite="mid:tencent_69DEB73019D4252032FBF5B5@qq.com"
type="cite">
<div> so I ended up with a little hacking with nvcc to achieve my
goal. I found the approach on
github: <a class="moz-txt-link-freetext" href="https://github.com/apc-llc/nvcc-llvm-ir">https://github.com/apc-llc/nvcc-llvm-ir</a> . Basically, I
used this method to get the unoptimized nvvm IR from nvcc( more
precisely, cicc), then invoked my own llvm pass on it to do the
transformation I need, and feed the transformed IR back to
nvcc's libnvvm backend. This way, nvcc still takes care of the
compilation and linking of device code.</div>
<div><br>
</div>
<div>I'm not sure whether this can be useful for your problem as
well, but I think I should let you know. Hope it helps!</div>
<div><br>
</div>
<div>Thanks!</div>
<div>Yuanfeng </div>
<div>
<div><br>
</div>
<div><br>
</div>
<div style="font-size: 12px;font-family: Arial
Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div>
<div style="font-size: 12px;background:#efefef;padding:8px;">
<div><b>From: </b> "via
llvm-dev";<a class="moz-txt-link-rfc2396E" href="mailto:llvm-dev@lists.llvm.org"><llvm-dev@lists.llvm.org></a>;</div>
<div><b>Send time:</b> Monday, Jun 19, 2017 4:07 PM</div>
<div><b>To:</b> "llvm-dev"<a class="moz-txt-link-rfc2396E" href="mailto:llvm-dev@lists.llvm.org"><llvm-dev@lists.llvm.org></a>; <wbr></div>
<div><b>Subject: </b> Re: [llvm-dev] Separate compilation of
CUDA code?</div>
</div>
<div><br>
</div>
Hi Yuanfeng,<br>
<br>
i have asked about this a few days ago. [0]<br>
As far as i know there is no such flag available and i did not
find any information whether this feature will be supported.
However i would be very interested on any updates on this
feature.<br>
<br>
Kind Regards<br>
Lorenz<br>
<p>[0] <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://lists.llvm.org/pipermail/llvm-dev/2017-June/113921.html">http://lists.llvm.org/pipermail/llvm-dev/2017-June/113921.html</a><br>
</p>
<br>
<div class="moz-cite-prefix">Am 14.06.17 um 19:18 schrieb
Yuanfeng Peng via llvm-dev:<br>
</div>
<blockquote type="cite"
cite="mid:tencent_080927ED5B450FBD38D58A50@qq.com">
<div>Hi,</div>
<div><br>
</div>
<div>I wonder whether the current version of LLVM supports
separate compilation and linking of device code, i.e., is
there a flag analogous to nvcc's --relocatable-device-code
flag? If not, is there any plan to support this?</div>
<div><br>
</div>
<div>Thanks!</div>
<div>Yuanfeng Peng </div>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Lorenz Braun
Research Associate
Institute of Computer Engineering (ZITI)
B6, 26, Building B, Office B2.20
68131 Mannheim
Phone: +49-621-181-2696
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:lorenz.braun@ziti.uni-heidelberg.de">lorenz.braun@ziti.uni-heidelberg.de</a></pre>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
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