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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Your question is really about the code which is generated by gcc for a statically scheduled loop, which has nothing to do with the
runtime.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US">If you investigate how gcc compiles a statically scheduled OpenMP loop (look at
<a href="https://godbolt.org/z/GtUnND">https://godbolt.org/z/GtUnND</a> for instance), you’ll see that there are no calls into the runtime for static loop scheduling.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">-- Jim<br>
<br>
Jim Cownie <james.h.cownie@intel.com><br>
CVCG/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;color:#1F497D">Tel: +44 117 9071438</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_____replyseparator"></a><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Openmp-dev [mailto:openmp-dev-bounces@lists.llvm.org]
<b>On Behalf Of </b>Tianyi Zhang via Openmp-dev<br>
<b>Sent:</b> Tuesday, October 16, 2018 10:27 PM<br>
<b>To:</b> openmp-dev@lists.llvm.org<br>
<b>Subject:</b> [Openmp-dev] Question about gcc support related to file kmp_gsupport.cpp<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal">Could anyone familiar with the gcc support for llvm-openmp help with this:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">When I build everything with gcc, and using debug mode, the debugger refuses to stop at<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<pre style="background:#2B2B2B"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">#pragma omp parallel<o:p></o:p></span></pre>
<pre style="background:#2B2B2B"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#BBB529">#pragma </span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">omp </span><b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#CC7832">for </span></b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">schedule(</span><b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#CC7832">static</span></b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">)<o:p></o:p></span></pre>
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<p class="MsoNormal"> It seems that for schedule(static) is not mapped to GCC. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Or is there any <span class="gmail-gr">marco</span> that <span class="gmail-gr">are</span> introduced inside <span class="gmail-gr">function</span> <o:p></o:p></p>
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<pre style="background:#2B2B2B"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#908B25">KMP_EXPAND_NAME</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">(</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#908B25">KMP_API_NAME_GOMP_PARALLEL</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">)<o:p></o:p></span></pre>
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<p class="MsoNormal"><span class="gmail-gr">As</span> It is only calling this function when I was running the program.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">however, if I use <o:p></o:p></p>
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<pre style="background:#2B2B2B"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#BBB529">#pragma </span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">omp parallel<o:p></o:p></span></pre>
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<pre style="background:#2B2B2B"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#BBB529">#pragma </span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">omp </span><b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#CC7832">for </span></b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">schedule(dynamic)<o:p></o:p></span></pre>
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<p class="MsoNormal">it is calling <o:p></o:p></p>
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<pre style="background:#2B2B2B"><b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#CC7832">void </span></b><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#908B25">KMP_EXPAND_NAME</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">(</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#908B25">KMP_API_NAME_GOMP_PARALLEL_LOOP_DYNAMIC</span><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#A9B7C6">)<o:p></o:p></span></pre>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Tianyi<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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