<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<meta content="text/html; charset=US-ASCII" http-equiv="Content-Type">
<title>
GitLab
</title>
<style data-premailer="ignore" type="text/css">
a { color: #1068bf; }
</style>
<style>img {
max-width: 100%; height: auto;
}
body {
font-size: 0.875rem;
}
body {
-webkit-text-shadow: rgba(255,255,255,0.01) 0 0 1px;
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: inherit;
}
</style>
</head>
<body style='font-size: inherit; -webkit-text-shadow: rgba(255,255,255,0.01) 0 0 1px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";'>
<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Simon Peyton Jones pushed to branch wip/T22084
at <a href="https://gitlab.haskell.org/ghc/ghc" style="color: #1068bf;">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5e8f493b015df859833beac5a8e64a0f9b9d4f4" style="color: #1068bf;">f5e8f493</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2022-09-30T18:42:13+02:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Boxity: Don't update Boxity unless worker/wrapper follows (#21754)
A small refactoring in our Core Opt pipeline and some new functions for
transfering argument boxities from one signature to another to facilitate
`Note [Don't change boxity without worker/wrapper]`.
Fixes #21754.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4baf7b1ceaef2d4f49e81e5786a855e22ed864bf" style="color: #1068bf;">4baf7b1c</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-09-30T17:45:47-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Scrub various partiality involving empty lists.
Avoids some uses of `head` and `tail`, and some panics when an argument is null.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/95ead839fd39e0aa781dca9b1268b243c29ccaeb" style="color: #1068bf;">95ead839</a></strong>
<div>
<span>by Alexis King</span>
<i>at 2022-10-01T00:37:43-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Fix a bug in continuation capture across multiple stack chunks
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2209665273135644f1b52470ea2cb53169f2ef91" style="color: #1068bf;">22096652</a></strong>
<div>
<span>by Bodigrim</span>
<i>at 2022-10-01T00:38:22-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Enforce internal invariant of OrdList and fix bugs in viewCons / viewSnoc
`viewCons` used to ignore `Many` constructor completely, returning `VNothing`.
`viewSnoc` violated internal invariant of `Many` being a non-empty list.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8baf231f5129c36032d9bb1d5b66cfc41b0a0fc9" style="color: #1068bf;">8baf231f</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2022-10-03T12:24:37+01:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Don't keep exit join points so much
We were religiously keeping exit join points throughout, which
had some bad effects (#21148, #22084).
This MR arranges that exit join points are inhibited from inlining
only in /one/ Simplifier pass (right after Exitification).
It's not a big deal, but it shaves 0.1% off compile times.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cd65da060f00bd74351e6324ddf567f19e31def4" style="color: #1068bf;">cd65da06</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2022-10-03T12:24:37+01:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Inline used-once non-recursive join points very aggressively
Given join j x = rhs in
joinrec k y = ....j x....
where this is the only occurrence of `j`, we want to inline `j`.
(Unless sm_keep_exits is on.)
This is just a tidy-up really. It doesn't change allocation, but
getting rid of a binding is always good.
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">30 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#90378e83c3a00a78bc0b3c01da111e0a787de451" style="color: #1068bf;">
compiler/GHC/Cmm/Node.hs
</a>
</li>
<li class="file-stats">
<a href="#072618a3250e1148569c2d2e0c05e313c2f529e3" style="color: #1068bf;">
compiler/GHC/Cmm/Switch.hs
</a>
</li>
<li class="file-stats">
<a href="#10b61652f9817945bb54ccf8fc40f8a664ca3c30" style="color: #1068bf;">
compiler/GHC/CmmToAsm.hs
</a>
</li>
<li class="file-stats">
<a href="#76664ab267df4fc0bec2465efd78bf0afacfe3a7" style="color: #1068bf;">
compiler/GHC/CmmToC.hs
</a>
</li>
<li class="file-stats">
<a href="#1aff3a222f2ec5c5498930c3d145b401cc300028" style="color: #1068bf;">
compiler/GHC/CmmToLlvm.hs
</a>
</li>
<li class="file-stats">
<a href="#8104fa1b71db6cfc4eb90cd769463d9eb9004619" style="color: #1068bf;">
compiler/GHC/Core/Opt/DmdAnal.hs
</a>
</li>
<li class="file-stats">
<a href="#1b8c4a0d06e2de704f7d040a0a715345e0c3c78c" style="color: #1068bf;">
compiler/GHC/Core/Opt/Exitify.hs
</a>
</li>
<li class="file-stats">
<a href="#bd153f89bc48f3fd5079b51fb799808aacbd750c" style="color: #1068bf;">
compiler/GHC/Core/Opt/Pipeline.hs
</a>
</li>
<li class="file-stats">
<a href="#4b5c25fd0b48f9d18eec74995c03cd5e0cb416d4" style="color: #1068bf;">
compiler/GHC/Core/Opt/Pipeline/Types.hs
</a>
</li>
<li class="file-stats">
<a href="#2f46b19cb85e3f7b4e72305644bc50015628c41d" style="color: #1068bf;">
compiler/GHC/Core/Opt/Simplify/Env.hs
</a>
</li>
<li class="file-stats">
<a href="#48fbb5cdea308650de5756521feb28ec68819b9b" style="color: #1068bf;">
compiler/GHC/Core/Opt/Simplify/Utils.hs
</a>
</li>
<li class="file-stats">
<a href="#b6a5ba32bafb8fbda933538b3007e755fef6f101" style="color: #1068bf;">
compiler/GHC/Core/Opt/SpecConstr.hs
</a>
</li>
<li class="file-stats">
<a href="#ab22d7ae4d245581b701367e386d7e886e416e76" style="color: #1068bf;">
compiler/GHC/Core/Opt/Specialise.hs
</a>
</li>
<li class="file-stats">
<a href="#a5d27de4e3111a69f69902c65ecf7b3379f7c49a" style="color: #1068bf;">
compiler/GHC/CoreToStg/Prep.hs
</a>
</li>
<li class="file-stats">
<a href="#28df9b7ff357d56663fd29efdad1c6b9bad3022f" style="color: #1068bf;">
compiler/GHC/Data/BooleanFormula.hs
</a>
</li>
<li class="file-stats">
<a href="#29399f07d3320158454cb214d24b4825a7bf4928" style="color: #1068bf;">
compiler/GHC/Data/OrdList.hs
</a>
</li>
<li class="file-stats">
<a href="#574ab192f6f9c7baf983610e701fedce9fffda66" style="color: #1068bf;">
compiler/GHC/Driver/Config/Core/Lint.hs
</a>
</li>
<li class="file-stats">
<a href="#d770db136b84c5655fedd78a1913ff7cd70f47fc" style="color: #1068bf;">
compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
</a>
</li>
<li class="file-stats">
<a href="#5aa3321b0f5c08d7ebfa1a4a3340d4451258988b" style="color: #1068bf;">
compiler/GHC/Linker/Loader.hs
</a>
</li>
<li class="file-stats">
<a href="#a9c3a06c7fd897da411de90b6369a78bbd012119" style="color: #1068bf;">
compiler/GHC/Llvm/Types.hs
</a>
</li>
<li class="file-stats">
<a href="#446cb12ca6cefaf1c6eb79b7db643632744263c7" style="color: #1068bf;">
compiler/GHC/Parser/PostProcess.hs
</a>
</li>
<li class="file-stats">
<a href="#e65390fa5a32c453a81a1c9a3e1c4464d155ca4a" style="color: #1068bf;">
compiler/GHC/Tc/Module.hs
</a>
</li>
<li class="file-stats">
<a href="#d09e98aae6ad2eb59d08eac7894b68c0ab820cda" style="color: #1068bf;">
compiler/GHC/Types/Demand.hs
</a>
</li>
<li class="file-stats">
<a href="#03e77c5a7f093768fb8c3be51f8c4ece06b78463" style="color: #1068bf;">
compiler/GHC/Types/Name/Reader.hs
</a>
</li>
<li class="file-stats">
<a href="#fb39dbd5a18747427e8ae2c57dcdde3473e65a53" style="color: #1068bf;">
compiler/GHC/Unit/State.hs
</a>
</li>
<li class="file-stats">
<a href="#4d45cd1896284e4b4034580e431af68b09013b33" style="color: #1068bf;">
compiler/GHC/Utils/Misc.hs
</a>
</li>
<li class="file-stats">
<a href="#9551b9e75c644c29779b50c911cc705fe3abb362" style="color: #1068bf;">
rts/Continuation.c
</a>
</li>
<li class="file-stats">
<a href="#461da564bd3b4ebcd9b60422d8b605c6ec248728" style="color: #1068bf;">
testsuite/tests/rts/continuations/all.T
</a>
</li>
<li class="file-stats">
<a href="#0a67da1c82ee6b7d0948a4fd81045f257912d710" style="color: #1068bf;">
<span class="new-file">
+
testsuite/tests/rts/continuations/cont_stack_overflow.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#895a41e5a430d4cd0f4c34b5967870c750b5958f" style="color: #1068bf;">
<span class="new-file">
+
testsuite/tests/simplCore/should_compile/T21148.hs
</span>
</a>
</li>
</ul>
<h5 style="margin-top: 10px; margin-bottom: 10px; font-size: 0.875rem;">The diff was not included because it is too large.</h5>
</div>
<div class="footer" style="margin-top: 10px;">
<p style="font-size: small; color: #666;">
—
<br>
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/f9a5a7394d7d7108b827c50441eb48237f75ffea...cd65da060f00bd74351e6324ddf567f19e31def4" style="color: #1068bf;">View it on GitLab</a>.
<br>
You're receiving this email because of your account on <a target="_blank" rel="noopener noreferrer" href="https://gitlab.haskell.org" style="color: #1068bf;">gitlab.haskell.org</a>. <a href="https://gitlab.haskell.org/-/profile/notifications" target="_blank" rel="noopener noreferrer" class="mng-notif-link" style="color: #1068bf;">Manage all notifications</a> · <a href="https://gitlab.haskell.org/help" target="_blank" rel="noopener noreferrer" class="help-link" style="color: #1068bf;">Help</a>
</p>
</div>
</body>
</html>