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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">That looks useful, thanks for the help.<br>
<br>
Orlando<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 lang="EN-US">From:</span></b><span lang="EN-US"> Jakub (Kuba) Kuderski <kubakuderski@gmail.com>
<br>
<b>Sent:</b> 21 October 2020 20:09<br>
<b>To:</b> Cazalet-Hyams, Orlando <orlando.hyams@sony.com><br>
<b>Cc:</b> llvm-dev@lists.llvm.org<br>
<b>Subject:</b> Re: [llvm-dev] How to determine the most-immediate dominator from a set?<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Orlando,<br>
<br>
If I understand correctly, you should be able to use `DT::findNearestCommonDominator` [1]. Because this function takes 2 blocks at a time, you'd need to call it in a loop. Basically NCD(B1, B2, B3, ...) = NCD(NCD(B1, B2), B3, ...).<br>
<br>
Sincerely,<br>
Jakub<br>
<br>
[1] <a href="https://llvm.org/doxygen/classllvm_1_1DominatorTreeBase.html#af555c3593d46d5f057fbebc8d292eac8">https://llvm.org/doxygen/classllvm_1_1DominatorTreeBase.html#af555c3593d46d5f057fbebc8d292eac8</a><o:p></o:p></p>
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<p class="MsoNormal">On Wed, Oct 21, 2020 at 11:03 AM Cazalet-Hyams, Orlando via llvm-dev <<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="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi llvm-dev,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Given an instruction, is there a standard way in llvm, such as a function or<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">methodology, to determine its most-immediate dominator from a set?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Many thanks,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Orlando<o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
LLVM Developers mailing list<br>
<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a><br>
<a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" target="_blank">https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a><o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Jakub Kuderski<o:p></o:p></p>
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