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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I just noticed that the LLVM page in Wikipedia (<a href="https://en.wikipedia.org/wiki/LLVM">https://en.wikipedia.org/wiki/LLVM</a> ) contains the statement
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#252525;background:white">For run-time performance of the compiled programs, GCC formerly outperformed LLVM by 10% on average.</span><sup id="cite_ref-18"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#252525;background:white"><a href="https://en.wikipedia.org/wiki/LLVM#cite_note-18"><span style="color:#0B0080;text-decoration:none">[18]</span></a><a href="https://en.wikipedia.org/wiki/LLVM#cite_note-19"><span style="color:#0B0080;text-decoration:none">[19]</span></a></span></sup><span class="apple-converted-space"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#252525;background:white"> </span></span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#252525;background:white">Newer
results indicate that LLVM has now caught up with GCC in this area, and is now compiling binaries of approximately equal performance,
<span style="background:yellow;mso-highlight:yellow">except for programs using<span class="apple-converted-space"> </span></span></span><span style="font-size:14.0pt;background:yellow;mso-highlight:yellow"><a href="https://en.wikipedia.org/wiki/OpenMP" title="OpenMP"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#0B0080;text-decoration:none">OpenMP</span></a></span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#252525;background:yellow;mso-highlight:yellow">.</span><sup id="cite_ref-20"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#252525;background:yellow;mso-highlight:yellow"><a href="https://en.wikipedia.org/wiki/LLVM#cite_note-20"><span style="color:#0B0080;text-decoration:none">[20]</span></a></span></sup><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">I believe that is wrong (their evidential link is from 2012!), and our OpenMP performance is now at least comparable with, if not better than, that
of GCC, but I don’t have any public benchmarks to prove it. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">So, does anyone have any pointers to public articles that show that, so that we can go in and fix the Wikipedia article?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">(Phoronix’ latest at
<a href="http://www.phoronix.com/scan.php?page=article&item=gcc-61-clang39&num=1">
http://www.phoronix.com/scan.php?page=article&item=gcc-61-clang39&num=1</a> doesn’t seem to have any OpenMP codes in it, so that’s no use).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">-- Jim<br>
<br>
James Cownie <james.h.cownie@intel.com><br>
SSG/DPD/TCAR (Technical Computing, Analyzers and Runtimes)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:EN-GB">Tel: +44 117 9071438</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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