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<h3>
Marge Bot pushed to branch wip/marge_bot_batch_merge_job
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/884245dd29265b7bee12cda8c915da9c916251ce">884245dd</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-09-01T12:39:36-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix FastString lexicographic ordering (fix #18562)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4b4fbc58d37d37457144014ef82bdd928de175df">4b4fbc58</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-09-01T12:39:36-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove "Ord FastString" instance
FastStrings can be compared in 2 ways: by Unique or lexically. We don't
want to bless one particular way with an "Ord" instance because it leads
to bugs (#18562) or to suboptimal code (e.g. using lexical comparison
while a Unique comparison would suffice).
UTF-8 encoding has the advantage that sorting strings by their encoded
bytes also sorts them by their Unicode code points, without having to
decode the actual code points. BUT GHC uses Modified UTF-8 which
diverges from UTF-8 by encoding \0 as 0xC080 instead of 0x00 (to avoid
null bytes in the middle of a String so that the string can still be
null-terminated). This patch adds a new `utf8CompareShortByteString`
function that performs sorting by bytes but that also takes Modified
UTF-8 into account. It is much more performant than decoding the strings
into [Char] to perform comparisons (which we did in the previous patch).
Bump haddock submodule
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b4edcde70160820dd23c53d9019f895930e2c0e7">b4edcde7</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-09-01T14:53:42-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add broken test for #18302
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ecbb4ca242ac75bae05683c0c17ec4e15d95ece7">ecbb4ca2</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2020-09-02T10:54:10-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Turn on -XMonoLocalBinds by default (#18430)
And fix the resulting type errors.
Co-authored-by: Krzysztof Gogolewski <krz.gogolewski@gmail.com>
Metric Decrease:
parsing001
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4b83ba70fe3c78198edaa1327b5b6c46f8d76f18">4b83ba70</a></strong>
<div>
<span>by David Feuer</span>
<i>at 2020-09-02T10:54:12-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove potential space leak from Data.List.transpose
Previously, `transpose` produced a list of heads
and a list of tails independently. This meant that
a function using only some heads, and only some tails,
could potentially leak space. Use `unzip` to work
around the problem by producing pairs and selector
thunks instead. Time and allocation behavior will
be worse, but there should be no more leak potential.</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30ee2283280ebb78d8e40dce294524f1ad138e20">30ee2283</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-09-02T10:54:15-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove outdated note
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab44b2abcbbf85c681f0e578b6dffe20efbe2e98">ab44b2ab</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-09-02T10:54:17-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bignum: add missing compat import/export functions
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
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<li class="file-stats">
<a href="#0887cf39c5cdf9cf8d6758f410d7dab3023c0d77">
compiler/GHC/Builtin/Names.hs
</a>
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<li class="file-stats">
<a href="#02362b473a022fb921814e97a6beba08107d38b1">
compiler/GHC/Builtin/Types/Literals.hs
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<li class="file-stats">
<a href="#db697f6aea9f93f1583f1d5c62d25570a1e07f73">
compiler/GHC/Cmm/CLabel.hs
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<li class="file-stats">
<a href="#83a3b2df5c77503c3a8c6df05a7654333d30cac3">
compiler/GHC/CmmToAsm/Reg/Linear.hs
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<li class="file-stats">
<a href="#f10ed7a2470454dfdd8691a08beba67d8b78ee70">
compiler/GHC/Core/Coercion/Axiom.hs
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<li class="file-stats">
<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e">
compiler/GHC/Core/Lint.hs
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<li class="file-stats">
<a href="#e8ff513ccf778ec681682afdca3a5b899745fd60">
compiler/GHC/Core/Map.hs
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<li class="file-stats">
<a href="#9aae8d40d1a22cf73eaec14fd86dfc6917ce10e5">
compiler/GHC/Core/Opt/Monad.hs
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<li class="file-stats">
<a href="#f168a93cde5e2aec2441d6331dfe500172df4af3">
compiler/GHC/Core/Opt/Simplify.hs
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<li class="file-stats">
<a href="#d01de95d8c71d4dec6a9a59146186e29a5b3fd38">
compiler/GHC/Core/Rules.hs
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<li class="file-stats">
<a href="#578c7c3857d66d963736ff6742f3433a0e8d01b7">
compiler/GHC/Core/TyCo/Rep.hs
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<li class="file-stats">
<a href="#d51029aec6ce58e66d4b48865c1dd0d2038fda29">
compiler/GHC/Data/FastString.hs
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<li class="file-stats">
<a href="#dbce6cb5e8f3d5287103c66d1a56ad63bbbd11a9">
compiler/GHC/Driver/Backpack.hs
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<li class="file-stats">
<a href="#1dab250036d04cfcf3530f6ff27889f723cc2dda">
compiler/GHC/Driver/Make.hs
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<li class="file-stats">
<a href="#6fd95917308bec0dc8f4ae2a0b62cb5fe33f38c4">
compiler/GHC/Hs/Lit.hs
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<li class="file-stats">
<a href="#649144a78135a23cabfc90dd83c4aabf448eb6ab">
compiler/GHC/Iface/Ext/Ast.hs
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<li class="file-stats">
<a href="#d29ec9f7b91b6b1c871d5cd8fe463ef9952e9597">
compiler/GHC/Iface/Ext/Debug.hs
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<li class="file-stats">
<a href="#ea70f9cf0a00327d944951cb4a4dfa9fe4194b2d">
compiler/GHC/Iface/Ext/Types.hs
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<li class="file-stats">
<a href="#1cf39038e57acc2a80cb5fb3fef9733e8e37b8fb">
compiler/GHC/Iface/Ext/Utils.hs
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<li class="file-stats">
<a href="#4ed0dc87b8bdd9324e8a181cff15caa104b9e58c">
compiler/GHC/Iface/Make.hs
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<li class="file-stats">
<a href="#a8e6b17fc507589522323d8dd20d9713e8c06760">
compiler/GHC/Iface/Recomp.hs
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<li class="file-stats">
<a href="#06ff7bac58fd8cfe0c17b81963b03f4cce86a065">
compiler/GHC/IfaceToCore.hs
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<li class="file-stats">
<a href="#3556223cd3ef45d787321b5290bf33535a361873">
compiler/GHC/Runtime/Linker.hs
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<li class="file-stats">
<a href="#da695c624a1f82e3d4e3097fd8be3602ffc1ae92">
compiler/GHC/SysTools.hs
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<li class="file-stats">
<a href="#902811828741e6bcd64702935bbb54edbbd070ef">
compiler/GHC/Tc/Gen/Expr.hs
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<li class="file-stats">
<a href="#83d23a46bb6cdc8b1edc16f1fd2c8f5c53e2c9ca">
compiler/GHC/Tc/TyCl.hs
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<li class="file-stats">
<a href="#3fc5bb65c04915723225de2ada7ecc20157f2f23">
compiler/GHC/Types/CostCentre.hs
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<li class="file-stats">
<a href="#ee98f016857ad5548bb7cdc5dd85246585acdfd6">
compiler/GHC/Types/Literal.hs
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<li class="file-stats">
<a href="#6816c5954a025bb59270f70d0a997e605585d801">
compiler/GHC/Types/Name/Occurrence.hs
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<li class="file-stats">
<a href="#9b5f1671f007d547cf3b5ec40babeafdffb99b1a">
compiler/GHC/Types/SrcLoc.hs
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<h5>The diff was not included because it is too large.</h5>
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