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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Marge Bot pushed to branch wip/marge_bot_batch_merge_job
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/8c72411d9504963069fb1ae736a2470cb9ae1250" style="color: #1068bf;">8c72411d</a></strong>
<div>
<span>by Gergo ERDI</span>
<i>at 2022-10-17T19:20:04-04:00</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;'>Add `Enum (Down a)` instance that swaps `succ` and `pred`
See https://github.com/haskell/core-libraries-committee/issues/51 for
discussion. The key points driving the implementation are the following
two ideas:
* For the `Int` type, `comparing (complement @Int)` behaves exactly as
an order-swapping `compare @Int`.
* `enumFrom @(Down a)` can be implemented in terms of `enumFromThen @a`,
if only the corner case of starting at the very end is handled specially
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d80ad2f40f2092f14402351a6a3cb944039a57df" style="color: #1068bf;">d80ad2f4</a></strong>
<div>
<span>by Alan Zimmerman</span>
<i>at 2022-10-17T19:20:40-04:00</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;'>Update the check-exact infrastructure to match ghc-exactprint
GHC tests the exact print annotations using the contents of
utils/check-exact.
The same functionality is provided via
https://github.com/alanz/ghc-exactprint
The latter was updated to ensure it works with all of the files on
hackage when 9.2 was released, as well as updated to ensure users of
the library could work properly (apply-refact, retrie, etc).
This commit brings the changes from ghc-exactprint into
GHC/utils/check-exact, adapting for the changes to master.
Once it lands, it will form the basis for the 9.4 version of
ghc-exactprint.
See also discussion around this process at #21355
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/08ab5419286d2620f2e6762607bad03c5bcd29ad" style="color: #1068bf;">08ab5419</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2022-10-17T19:21:15-04:00</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;'>Avoid allocating intermediate lists for non recursive bindings.
We do so by having an explicit folding function that doesn't need to
allocate intermediate lists first.
Fixes #22196
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ff6275ef829873a70350c6d597e485bb84dd1bb1" style="color: #1068bf;">ff6275ef</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2022-10-17T19:21:52-04:00</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;'>Testsuite: Add a new tables_next_to_code predicate.
And use it to avoid T21710a failing on non-tntc archs.
Fixes #22169
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/abb82f3892f8530dcaca1caae8a614b1faa591c3" style="color: #1068bf;">abb82f38</a></strong>
<div>
<span>by Eric Lindblad</span>
<i>at 2022-10-17T19:22:33-04:00</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;'>example rewrite</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/39beb8017ba64801f6573cf1a1a67e94fdb522ee" style="color: #1068bf;">39beb801</a></strong>
<div>
<span>by Eric Lindblad</span>
<i>at 2022-10-17T19:22:33-04:00</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;'>remove redirect</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0d9fb651768f0b88be0a564deebbbd2391104ab4" style="color: #1068bf;">0d9fb651</a></strong>
<div>
<span>by Eric Lindblad</span>
<i>at 2022-10-17T19:22:33-04:00</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;'>use heredoc</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0fa2d185b23eb08e2a2f2a4b7e40431c599e446d" style="color: #1068bf;">0fa2d185</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-17T19:23:10-04:00</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;'>testsuite: Fix typo when setting llvm_ways
Since 2014 llvm_ways has been set to [] so none of the tests which use
only_ways(llvm_ways) have worked as expected.
Hopefully the tests still pass with this typo fix!
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ced664a27247730925530d39c83b879969b68709" style="color: #1068bf;">ced664a2</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2022-10-17T19:23:10-04:00</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 T15155l not getting -fllvm
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a2b40dd4eaace50b30e201650409c7d43a9ef062" style="color: #1068bf;">a2b40dd4</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2022-10-17T19:53:52-04:00</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 GHCis interaction with tag inference.
I had assumed that wrappers were not inlined in interactive mode.
Meaning we would always execute the compiled wrapper which properly
takes care of upholding the strict field invariant.
This turned out to be wrong. So instead we now run tag inference even
when we generate bytecode. In that case only for correctness not
performance reasons although it will be still beneficial for runtime
in some cases.
I further fixed a bug where GHCi didn't tag nullary constructors
properly when used as arguments. Which caused segfaults when calling
into compiled functions which expect the strict field invariant to
be upheld.
Fixes #22042 and #21083
-------------------------
Metric Increase:
T4801
Metric Decrease:
T13035
-------------------------
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1b5b9b144f33a7af26df7f10408fa1f418e465e4" style="color: #1068bf;">1b5b9b14</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-17T19:54:01-04:00</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;'>Make `Functor` a superclass of `TrieMap`, which lets us derive the `map` functions.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4d092683e1a66559824a2a013e8db278f00a25ca" style="color: #1068bf;">4d092683</a></strong>
<div>
<span>by Jan Hrček</span>
<i>at 2022-10-17T19:54:05-04:00</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;'>Small language fixes in 'Using GHC'
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">30 changed files:</h4>
<ul>
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<a href="#4fbb1c5f251c38fc01fcde693420ee6d02df7e45" style="color: #1068bf;">
compiler/GHC/Cmm/Dataflow/Label.hs
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<a href="#182d6a315e784018aa9c8b2ad736036b97bd5d48" style="color: #1068bf;">
compiler/GHC/Core.hs
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<a href="#640612f2fdc707ac7ee74f4165a7b86f38aa6249" style="color: #1068bf;">
compiler/GHC/Core/Map/Expr.hs
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<a href="#691eec62dc293d0881c314b38b7363dc88b44c59" style="color: #1068bf;">
compiler/GHC/Core/Map/Type.hs
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<a href="#1b8c4a0d06e2de704f7d040a0a715345e0c3c78c" style="color: #1068bf;">
compiler/GHC/Core/Opt/Exitify.hs
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<a href="#cc763cdd1967f5d921161a32f64136cfcf0332c5" style="color: #1068bf;">
compiler/GHC/Core/Opt/SetLevels.hs
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<a href="#2f46b19cb85e3f7b4e72305644bc50015628c41d" style="color: #1068bf;">
compiler/GHC/Core/Opt/Simplify/Env.hs
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<a href="#b6a5ba32bafb8fbda933538b3007e755fef6f101" style="color: #1068bf;">
compiler/GHC/Core/Opt/SpecConstr.hs
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compiler/GHC/Core/Opt/Specialise.hs
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compiler/GHC/Core/Utils.hs
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<a href="#87e780e9b5d14cf4e8a52bb125fc352fa8a1d4be" style="color: #1068bf;">
compiler/GHC/Data/TrieMap.hs
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<a href="#30d5e1537ef6a53cd9a4db9ddfc40c09143cdbb3" style="color: #1068bf;">
compiler/GHC/Driver/GenerateCgIPEStub.hs
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compiler/GHC/Driver/Main.hs
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compiler/GHC/Driver/Pipeline.hs
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compiler/GHC/Driver/Pipeline/Execute.hs
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compiler/GHC/Iface/Make.hs
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compiler/GHC/Stg/CSE.hs
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compiler/GHC/Stg/InferTags.hs
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compiler/GHC/Stg/InferTags/Rewrite.hs
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<a href="#2893dc4a92d467f29db3d14e970629ede2648145" style="color: #1068bf;">
compiler/GHC/Stg/InferTags/TagSig.hs
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compiler/GHC/Stg/Pipeline.hs
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compiler/GHC/StgToByteCode.hs
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compiler/GHC/StgToCmm/Types.hs
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compiler/GHC/Types/Name/Set.hs
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compiler/GHC/Types/Var/Env.hs
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docs/users_guide/using.rst
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libraries/base/Data/Ord.hs
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testsuite/config/ghc
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