<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en" style='--code-editor-font: var(--default-mono-font, "GitLab Mono"), JetBrains Mono, Menlo, DejaVu Sans Mono, Liberation Mono, Consolas, Ubuntu Mono, Courier New, andale mono, lucida console, monospace;'>
<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: .875rem;
}
body {
-webkit-text-shadow: rgba(255,255,255,.01) 0 0 1px;
}
body {
font-family: "GitLab Sans",-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,.01) 0 0 1px; font-family: "GitLab Sans",-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;">
Marge Bot pushed to branch master at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/52b6539b5fbce27e0e8b4181bea333895e42128c">52b6539b</a></strong>
<div>
<span> by M Farkas-Dyck </span> <i> at 2025-02-08T11:34:51-08:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Avoid partiality in `Language.Haskell.Syntax.Expr`, `GHC.Hs.Expr`, `GHC.Rename.Expr`, etc.

In particular, use `NonEmpty` where appropriate:
- the argument of `FieldLabelString`
- the argument of `HsMultiIf`
- `grhssGRHSs`

Decreases overall compile-time allocation by about 0.1% in the benchmark suite (min -0.8%, max +0.3%).

Metric Decrease:
    T3294
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
48 changed files:
</h4>
<ul>
<li class="file-stats">
<a href="#f157d5c316465070f94641e4c9ab0248311588cd">
compiler/GHC/Core/UsageEnv.hs
</a>
</li>
<li class="file-stats">
<a href="#6ec701430cdc4f89977822eb47ce98ebff95ee88">
<span class="new-file">
+
compiler/GHC/Data/List/NonEmpty.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#cc97d81e7223ad4a3a5e801156ca632f9fa75654">
compiler/GHC/Hs/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#7a1af22e4c32b9aa6ec708d9d3788e1c4db5da9a">
compiler/GHC/Hs/Utils.hs
</a>
</li>
<li class="file-stats">
<a href="#5855ff1d64fcadf28e7984964e69e35ff4de7f0a">
compiler/GHC/HsToCore/Arrows.hs
</a>
</li>
<li class="file-stats">
<a href="#6bdd5abc649727f2a802bc96ce5c276de19d3726">
compiler/GHC/HsToCore/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#83f0b13548ac43fe13b1813fb407249ff9b825f7">
compiler/GHC/HsToCore/GuardedRHSs.hs
</a>
</li>
<li class="file-stats">
<a href="#36e7b8d61b4fae8f65fca3984d01eb4076712f2b">
compiler/GHC/HsToCore/Pmc.hs
</a>
</li>
<li class="file-stats">
<a href="#950eaa7de202a2e915b5ff68a4cfd16e972ad359">
compiler/GHC/HsToCore/Pmc/Desugar.hs
</a>
</li>
<li class="file-stats">
<a href="#3c19c0be465f9a28d7b69f89c55648080fcc37eb">
compiler/GHC/HsToCore/Quote.hs
</a>
</li>
<li class="file-stats">
<a href="#aa160d2e15ce4b9872864040e449a60d09ad648f">
compiler/GHC/HsToCore/Ticks.hs
</a>
</li>
<li class="file-stats">
<a href="#649144a78135a23cabfc90dd83c4aabf448eb6ab">
compiler/GHC/Iface/Ext/Ast.hs
</a>
</li>
<li class="file-stats">
<a href="#bf951467d4a9aa443cb109cb4c84a2891945649b">
compiler/GHC/Parser.y
</a>
</li>
<li class="file-stats">
<a href="#446cb12ca6cefaf1c6eb79b7db643632744263c7">
compiler/GHC/Parser/PostProcess.hs
</a>
</li>
<li class="file-stats">
<a href="#4d8273ba28c075a67472025c43e27991bd8f25f6">
compiler/GHC/Prelude/Basic.hs
</a>
</li>
<li class="file-stats">
<a href="#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2">
compiler/GHC/Rename/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#7dd1cd0f6f2164a14c83d9aa564dd32bc30e447a">
compiler/GHC/Rename/Module.hs
</a>
</li>
<li class="file-stats">
<a href="#939d24c1002dc322659c1f67c9f3d2db2ae31dd4">
compiler/GHC/Rename/Utils.hs
</a>
</li>
<li class="file-stats">
<a href="#1dd9c7a6bbc222c976a6ec1c4b772232ae60f7e5">
compiler/GHC/Tc/Errors/Ppr.hs
</a>
</li>
<li class="file-stats">
<a href="#cdba811872892f235fe7059df1a6c538fba60816">
compiler/GHC/Tc/Errors/Types.hs
</a>
</li>
<li class="file-stats">
<a href="#902811828741e6bcd64702935bbb54edbbd070ef">
compiler/GHC/Tc/Gen/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#3377164bfe9a1f1a8cfd588703ae1e0ea1e91cf9">
compiler/GHC/Tc/Gen/Match.hs
</a>
</li>
<li class="file-stats">
<a href="#93bba9b9e0195db135fec54160523a427ea042fd">
compiler/GHC/Tc/Types/Origin.hs
</a>
</li>
<li class="file-stats">
<a href="#2eac51f9871ca0c0698aa1fc7f79c05ef8fc4a49">
compiler/GHC/ThToHs.hs
</a>
</li>
<li class="file-stats">
<a href="#e2c828ee9e003df518a07b05beaa6971e5c62eb0">
compiler/GHC/Types/Error/Codes.hs
</a>
</li>
<li class="file-stats">
<a href="#a36a7299626a1a6ae3cf89e37bdd10e9bba4f852">
compiler/Language/Haskell/Syntax/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">
compiler/ghc.cabal.in
</a>
</li>
<li class="file-stats">
<a href="#f227a38797c18ee429e783e5132ca39e5a4cc7e7">
testsuite/tests/count-deps/CountDepsAst.stdout
</a>
</li>
<li class="file-stats">
<a href="#2dcdf7aadcff5b41822596f22b49b2851374d0cd">
testsuite/tests/count-deps/CountDepsParser.stdout
</a>
</li>
<li class="file-stats">
<a href="#ebc0f6e3733fe075348f9485435df1d0ada36c5b">
testsuite/tests/ghc-api/exactprint/T22919.stderr
</a>
</li>
<li class="file-stats">
<a href="#a408de4f7dee511726d0f2f37a8d1f8ccff33307">
testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
</a>
</li>
<li class="file-stats">
<a href="#25f68703f1d1ef244aacacbbc84228236161761c">
testsuite/tests/module/mod185.stderr
</a>
</li>
<li class="file-stats">
<a href="#e6a699bed61e0c8d8109f383d714115200dd37b4">
testsuite/tests/parser/should_compile/DumpParsedAst.stderr
</a>
</li>
<li class="file-stats">
<a href="#9482c0bcbf68d452f1bc906433629045ac39c94b">
testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
</a>
</li>
<li class="file-stats">
<a href="#338eb1c1a80bcdbcecf4018a1808183f4305c65b">
testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
</a>
</li>
<li class="file-stats">
<a href="#4afdc3da79634c15b8fbfb6e765dc12ea54bece7">
testsuite/tests/parser/should_compile/DumpSemis.stderr
</a>
</li>
<li class="file-stats">
<a href="#d22f77fc8c4cf5de6acf34f8a183080973f0688d">
testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
</a>
</li>
<li class="file-stats">
<a href="#ee24e3a743c7969d4a3cfdec1d00511d39dad123">
testsuite/tests/parser/should_compile/KindSigs.stderr
</a>
</li>
<li class="file-stats">
<a href="#f8e32e71e2a9ee82c7fa55a4e9dacb1cd355c1fd">
testsuite/tests/parser/should_compile/T20718.stderr
</a>
</li>
<li class="file-stats">
<a href="#108eaa976022091002f53fefb163966e163e35b6">
testsuite/tests/parser/should_compile/T20846.stderr
</a>
</li>
<li class="file-stats">
<a href="#068e4a3bdf83186f19bb7c7687aa9db84436e8c2">
testsuite/tests/perf/compiler/hard_hole_fits.stderr
</a>
</li>
<li class="file-stats">
<a href="#2f973f9f6cf3dfea58a13a007bd625e286c375ec">
testsuite/tests/printer/Test20297.stdout
</a>
</li>
<li class="file-stats">
<a href="#8cb35be8f13ce47421a8f834d7262e0459fb7e5a">
testsuite/tests/printer/Test24533.stdout
</a>
</li>
<li class="file-stats">
<a href="#bd5577c69b905a51480ab18ecfdf18f58d8bac88">
<span class="new-file">
+
testsuite/tests/th/EmptyGuard.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#3d5d60f8bc20454e02a1114f4f25d244bab74ae1">
<span class="new-file">
+
testsuite/tests/th/EmptyGuard.stderr
</span>
</a>
</li>
<li class="file-stats">
<a href="#6f885f60b8c0fea6b94dd73a67d02212eedb4498">
testsuite/tests/th/all.T
</a>
</li>
<li class="file-stats">
<a href="#c5662bedafa6a48ec7062b131d94b70f514207d9">
utils/check-exact/ExactPrint.hs
</a>
</li>
<li class="file-stats">
<a href="#5a3935220a12511953a752af2c9b7d29d0a1b3fa">
utils/check-exact/Transform.hs
</a>
</li>
</ul>
<h5 style="margin-top: 10px; margin-bottom: 10px; font-size: .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: #626168;">

<br>
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/52b6539b5fbce27e0e8b4181bea333895e42128c">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">gitlab.haskell.org</a>. <a href="https://gitlab.haskell.org/-/profile/notifications" target="_blank" rel="noopener noreferrer" class="mng-notif-link">Manage all notifications</a> · <a href="https://gitlab.haskell.org/help" target="_blank" rel="noopener noreferrer" class="help-link">Help</a>
<script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","action":{"@type":"ViewAction","name":"View Commit","url":"https://gitlab.haskell.org/ghc/ghc/-/commit/52b6539b5fbce27e0e8b4181bea333895e42128c"}}</script>


</p>
</div>
</body>
</html>