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Code Issues Projects Releases Wiki Activity

add PTX backend info

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144711 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2011-11-15 22:23:46 +00:00
parent 88d012a9c3
commit 7b95c38813
1 changed files with 24 additions and 0 deletions
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docs/ReleaseNotes.html
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@ -995,6 +995,7 @@ Builder.CreateResume(UnwindData);
-->
</ul>
</div>
<!--=========================================================================-->
<h3>
@ -1016,7 +1017,30 @@ Builder.CreateResume(UnwindData);
<li>Initial support for MIPS64 has been added.</li>
</ul>
</div>
<!--=========================================================================-->
<h3>
<a name="PTX">PTX Target Improvements</a>
</h3>
<div>
<p>
The PTX back-end is still experimental, but is fairly usable for compute kernels
in LLVM 3.0. Most scalar arithmetic is implemented, as well as intrinsics to
access the special PTX registers and sync instructions. The major missing
pieces are texture/sampler support and some vector operations.</p>
<p>That said, the backend is already being used for domain-specific languages
and works well with the <a href="http://www.pcc.me.uk/~peter/libclc/">libclc
library</a> to supply OpenCL built-ins. With it, you can use Clang to compile
OpenCL code into PTX and execute it by loading the resulting PTX as a binary
blob using the nVidia OpenCL library. It has been tested with several OpenCL
programs, including some from the nVidia GPU Computing SDK, and the performance
is on par with the nVidia compiler.</p>
</div>
<!--=========================================================================-->
<h3>
<a name="OtherTS">Other Target Specific Improvements</a>