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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Yes, do take a look at this. It’s a fairly direct implementation of the paper “<a href="https://www.microsoft.com/en-us/research/publication/compiling-without-continuations/">Compiling
without continuations</a>”. You should definitely read the paper first; it’ll set the scene.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">I am really hoping to get this into 8.2. It’s a significant step forward in GHC’s optimisation pipeline.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">I’ve reviewed quite a bit of the code with Luke, but you should feel free to say “couldn’t this be simpler?” where you get confused or stuck. Unlike,
say, type-in-type (!) it’s not that hard, and there should not be anything really obscure.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">I’m sure there are ways to make it simpler and better. (That’s why I am endlessly refactoring GHC.) So review away.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Thank you Luke!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><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"> ghc-devs [mailto:ghc-devs-bounces@haskell.org]
<b>On Behalf Of </b>Luke Maurer<br>
<b>Sent:</b> 17 January 2017 20:24<br>
<b>To:</b> ghc-devs <ghc-devs@haskell.org><br>
<b>Subject:</b> Join points<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p>Hello all! For your consideration, I present patch D2853: Join points.<o:p></o:p></p>
<p><a href="https://phabricator.haskell.org/D2853">https://phabricator.haskell.org/D2853</a><o:p></o:p></p>
<p>It validates* and it's ready for wider reviewing, so please help me get it to land before the freeze!<o:p></o:p></p>
<p>It's ... sizable. There's not really any way to split it, since there are many interdependencies. I've put up a "tour" as part of the SequentCore page on the wiki:<o:p></o:p></p>
<p><a href="https://ghc.haskell.org/trac/ghc/wiki/SequentCore">https://ghc.haskell.org/trac/ghc/wiki/SequentCore</a><o:p></o:p></p>
<p>This should help with where to start. Also included on the wiki are benchmarks and lots of general information.<o:p></o:p></p>
<p>*Modulo a few long URLs and a known bug (D2964).<o:p></o:p></p>
<p>- Luke Maurer<br>
University of Oregon<br>
<a href="mailto:maurerl@cs.uoregon.edu">maurerl@cs.uoregon.edu</a><o:p></o:p></p>
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