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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi Itaru,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">(and thanks for the replies on this Renato).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We (Arm HPC) initially put up that github branch as an aid to the discussions on upstream SVE support. The branch was very old (LLVM-5 based!), and various aspects of our implementation have changed
significantly, following discussions with the community. For this reason, we felt that branch was unhelpful at this point, so have removed it.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">The team are working hard on getting SVE codegen support into LLVM, but it’s not there yet. For now, this leaves the following options for testing vectorization with SVE:<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span style="mso-fareast-language:EN-US">Get an up to date GNU compiler, which has SVE vectorization support<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span style="mso-fareast-language:EN-US">Use Arm Compiler for Linux (the new name for Arm Compiler for HPC)<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">If you’re interested in the latter option, feel free to give me a mail (will.lovett at arm dot com). Depending on your use-case, there may be scope for arranging a license.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Will.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="color:#4472C4">Will Lovett<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#4472C4">Technical Product owner<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri Light",sans-serif;color:#4472C4">Compilers & Libraries</span><span style="color:black"><br>
</span><span style="font-family:"Calibri Light",sans-serif;color:#4472C4">Arm Allinea Studio
</span><span style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On 11/09/2019, 22:31, "llvm-dev on behalf of Itaru Kitayama via llvm-dev" <<a href="mailto:llvm-dev-bounces@lists.llvm.org">llvm-dev-bounces@lists.llvm.org</a> on behalf of
<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Renato et al.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">In the meantime, is there an out of tree branch I mean, other than LLVM trunk so I can test how much I can SVE vectorize my code with it?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Arm seemed to gave taken down the GitHub branch for sometime.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On Wed, Sep 11, 2019 at 20:41 Renato Golin <<a href="mailto:rengolin@gmail.com">rengolin@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On Wed, 11 Sep 2019 at 06:13, Itaru Kitayama via llvm-dev<br>
<<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:<br>
> Hi,<br>
> I'm still seeing the same ie trying to produce SVE instructions but<br>
> resulted in NEONs with Clang as of Sep. 10th.<br>
> <a href="http://lists.llvm.org/pipermail/llvm-dev/2019-March/130788.html" target="_blank">
http://lists.llvm.org/pipermail/llvm-dev/2019-March/130788.html</a><br>
<br>
Hi Itaru-san,<br>
<br>
IR SVE implementation is ongoing, CC'ing Graham who is leading that effort.<br>
<br>
I'm hoping we can have something working before the next release is<br>
branched (Dec/Jan), but I don't expect it to be fully featured (inline<br>
asm, full ACLE, auto-vec in all NEON cases, etc).<br>
<br>
cheers,<br>
--renato<o:p></o:p></p>
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