<div dir="auto">If this function is also in the interface of libgomp.so, there might be a use case for this function. You can either look into the codegen source of gcc or ask at the gcc compiler list.<div dir="auto"><br></div><div dir="auto">-joachim</div></div><br><div class="gmail_quote"><div dir="ltr">Tianyi Zhang via Openmp-dev <<a href="mailto:openmp-dev@lists.llvm.org">openmp-dev@lists.llvm.org</a>> schrieb am Mi., 17. Okt. 2018, 17:04:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks, Jim,<div>I was wondering why there is a function :</div><div><pre style="background-color:rgb(43,43,43);color:rgb(169,183,198);font-family:"DejaVu Sans Mono";font-size:9pt"><span style="color:rgb(144,139,37)">PARALLEL_LOOP</span>(<span style="color:rgb(144,139,37)">KMP_EXPAND_NAME</span>(<span style="color:rgb(144,139,37)">KMP_API_NAME_GOMP_PARALLEL_LOOP_STATIC</span>)<span style="color:rgb(204,120,50)">,<br></span><span style="color:rgb(204,120,50)"> </span><span style="color:rgb(152,118,170);font-style:italic">kmp_sch_static</span><span style="color:rgb(204,120,50)">, </span><span style="color:rgb(144,139,37)">OMPT_LOOP_PRE</span><span style="color:rgb(204,120,50)">, </span><span style="color:rgb(144,139,37)">OMPT_LOOP_POST</span>)</pre></div><div>which maps gcc call to clang but never used or called.</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Oct 17, 2018 at 3:47 AM Cownie, James H <<a href="mailto:james.h.cownie@intel.com" target="_blank" rel="noreferrer">james.h.cownie@intel.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-GB" link="#0563C1" vlink="#954F72">
<div class="m_3531642037811707602m_7273789530552659148WordSection1">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d">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.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d">If you investigate how gcc compiles a statically scheduled OpenMP loop (look at
<a href="https://godbolt.org/z/GtUnND" target="_blank" rel="noreferrer">https://godbolt.org/z/GtUnND</a> for instance), you’ll see that there are no calls into the runtime for static loop scheduling.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d">-- Jim<br>
<br>
Jim Cownie <<a href="mailto:james.h.cownie@intel.com" target="_blank" rel="noreferrer">james.h.cownie@intel.com</a>><br>
CVCG/DPD/TCAR (Technical Computing, Analyzers, and Runtimes)<u></u><u></u></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"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><a name="m_3531642037811707602_m_7273789530552659148______replyseparator" rel="noreferrer"></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:<a href="mailto:openmp-dev-bounces@lists.llvm.org" target="_blank" rel="noreferrer">openmp-dev-bounces@lists.llvm.org</a>]
<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> <a href="mailto:openmp-dev@lists.llvm.org" target="_blank" rel="noreferrer">openmp-dev@lists.llvm.org</a><br>
<b>Subject:</b> [Openmp-dev] Question about gcc support related to file kmp_gsupport.cpp<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Hi,<u></u><u></u></p>
<div>
<p class="MsoNormal">Could anyone familiar with the gcc support for llvm-openmp help with this:<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">When I build everything with gcc, and using debug mode, the debugger refuses to stop at<u></u><u></u></p>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<pre style="background:#2b2b2b"><span style="font-size:9.0pt;font-family:"DejaVu Sans Mono",serif;color:#a9b7c6">#pragma omp parallel<u></u><u></u></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">)<u></u><u></u></span></pre>
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<div>
<div>
<p class="MsoNormal"> It seems that for schedule(static) is not mapped to GCC. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Or is there any <span class="m_3531642037811707602m_7273789530552659148gmail-gr">marco</span> that <span class="m_3531642037811707602m_7273789530552659148gmail-gr">are</span> introduced inside <span class="m_3531642037811707602m_7273789530552659148gmail-gr">function</span> <u></u><u></u></p>
</div>
<div>
<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">)<u></u><u></u></span></pre>
</div>
<div>
<p class="MsoNormal"><span class="m_3531642037811707602m_7273789530552659148gmail-gr">As</span> It is only calling this function when I was running the program.<u></u><u></u></p>
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</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">however, if I use <u></u><u></u></p>
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<div>
<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<u></u><u></u></span></pre>
</div>
<div>
<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)<u></u><u></u></span></pre>
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<div>
<p class="MsoNormal">it is calling <u></u><u></u></p>
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<div>
<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">)<u></u><u></u></span></pre>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Tianyi<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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