<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US"><div class="gmail-m_9140444704220893414WordSection1"><p class="MsoNormal">I also found this thread from almost 2 years ago:</p><p class="MsoNormal"><u></u></p>
<p class="MsoNormal"><a href="http://lists.llvm.org/pipermail/llvm-dev/2016-April/098763.html" target="_blank">http://lists.llvm.org/<wbr>pipermail/llvm-dev/2016-April/<wbr>098763.html</a><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">At that time it seemed the itineraries are a better choice, but is it still the case?<u></u><u></u></p>
<p class="MsoNormal">Also, in this thread Phil says:<u></u><u></u></p>
<p class="MsoNormal">“Some of the constraints that can be found in in-order micro architectures cannot be expressed in the per-operand scheduling model”<u></u><u></u></p>
<p class="MsoNormal">Does anybody have an example of such constraints that will be harder to model with per operand scheduling?</p></div></div></blockquote><div><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">​From the thread you provided, it says</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><font color="#000000" face="arial, helvetica, sans-serif"><span style="white-space:pre-wrap"><br></span></font></div></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><font color="#000000" face="arial, helvetica, sans-serif"><span style="white-space:pre-wrap">ARM might be a good start for generic superscalar. Hexagon for VLIW style scheduling.</span></font><span style="color:rgb(0,0,0);white-space:pre-wrap">​</span></div></div></div></blockquote><font face="arial, helvetica, sans-serif"><div><font face="arial, helvetica, sans-serif"><br></font></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​Anyway, I also interest in knowing their difference. :-)</div></font><div><font face="arial, helvetica, sans-serif"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline"><br></div></font></div><div><font face="arial, helvetica, sans-serif"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">Regards,</div></font></div><div><font face="arial, helvetica, sans-serif"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">chenwj​</div><br></font><div class="gmail_extra"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div>Wei-Ren Chen (陳韋任)<br>Homepage: <a href="https://people.cs.nctu.edu.tw/~chenwj" target="_blank">https://people.cs.nctu.edu.tw/~chenwj</a></div></div></div>
</div></div></div>