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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Krzysztof Gogolewski pushed to branch wip/T23134 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: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c9c26cd60692feadcec78c51041df1dbf0caaf8f">c9c26cd6</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-16T12:17:50-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Fix BCO creation setting caps when -j > -N
* Remove calls to 'setNumCapabilities' in 'createBCOs'
These calls exist to ensure that 'createBCOs' can benefit from
parallelism. But this is not the right place to call
`setNumCapabilities`. Furthermore the logic differs from that in the
driver causing the capability count to be raised and lowered at each TH
call if -j > -N.
* Remove 'BCOOpts'
No longer needed as it was only used to thread the job count down to `createBCOs`
Resolves #23049
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5ddbf5edcb64f04b3527efcac727813080380aa6">5ddbf5ed</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-16T12:17:50-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add changelog entry for #23049
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e3ce9a4ce2509ce779102ec6f8e8ddcb676f94b">6e3ce9a4</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-16T12:18:26-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>configure: Fix FIND_CXX_STD_LIB test on Darwin
Annoyingly, Darwin's <cstddef> includes <version> and APFS is
case-insensitive. Consequently, it will end up #including the
`VERSION` file generated by the `configure` script on the second
and subsequent runs of the `configure` script.
See #23116.</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/19d6d0397c223bbec3c372d2b8c04c2e356c44a8">19d6d039</a></strong>
<div>
<span> by sheaf </span> <i> at 2023-03-16T21:31:22+01:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>ghci: only keep the GlobalRdrEnv in ModInfo
The datatype GHC.UI.Info.ModInfo used to store a ModuleInfo,
which includes a TypeEnv. This can easily cause space leaks as we
have no way of forcing everything in a type environment.
In GHC, we only use the GlobalRdrEnv, which we can force completely.
So we only store that instead of a fully-fledged ModuleInfo.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/73d07c6e1986bd2b3516d4f009cc1e30ba804f06">73d07c6e</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-17T14:36:49-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.Backpack
Tracking ticket: #20119
MR: !10127
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
One occurrence, when handing a nested error from the interface loading
machinery, was omitted. It will be handled by a subsequent changeset
that addresses interface errors.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a13affce1a6196ccff6c126112ab26823c85e727">a13affce</a></strong>
<div>
<span> by Andrei Borzenkov </span> <i> at 2023-03-21T11:17:17-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Rename () into Unit, (,,...,,) into Tuple<n> (#21294)
This patch implements a part of GHC Proposal #475.
The key change is in GHC.Tuple.Prim:
- data () = ()
- data (a,b) = (a,b)
- data (a,b,c) = (a,b,c)
...
+ data Unit = ()
+ data Tuple2 a b = (a,b)
+ data Tuple3 a b c = (a,b,c)
...
And the rest of the patch makes sure that Unit and Tuple<n>
are pretty-printed as () and (,,...,,) in various contexts.
Updates the haddock submodule.
Co-authored-by: Vladislav Zavialov <vlad.z.4096@gmail.com>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/23642bf609a5da928992b4fae9242194f848ff2f">23642bf6</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: fix some wrongs in the eventlog format documentation
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/90159773f1aeaf52d7ac3ba82d21c0f92c86ea15">90159773</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: explain the BLOCK_MARKER event
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab1c25e866ed39d60e378a6f46c0c89a39e599cd">ab1c25e8</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add BlockedOnMVarRead thread status in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/898afaef53470adbc03b4a8272c209b6f9aed6fa">898afaef</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add TASK_DELETE event in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bb05b4ccdfe81e9fc60065337eafa9c94499ad61">bb05b4cc</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add WALL_CLOCK_TIME event in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/eeea0343f1bd5e3359c32c10fffb2a300c4924ba">eeea0343</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-21T11:18:34-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.Env
Tracking ticket: #20119
MR: !10129
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/be1d4be8d09072091b77cb68ccf234434754af00">be1d4be8</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-21T11:19:13-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Document pdep / pext primops
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e8b4aac437b2620d93546a57eb5818f317a4549e">e8b4aac4</a></strong>
<div>
<span> by Alex Mason </span> <i> at 2023-03-21T18:11:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Allow LLVM backend to use HDoc for faster file generation.
Also remove the MetaStmt constructor from LlvmStatement and places the annotations into the Store statement.
Includes “Implement a workaround for -no-asm-shortcutting bug“ (https://gitlab.haskell.org/ghc/ghc/-/commit/2fda9e0df886cc551e2cd6b9c2a384192bdc3045)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ea24360d0548c905b6b2427b5cdcb82d3cd296ae">ea24360d</a></strong>
<div>
<span> by Luite Stegeman </span> <i> at 2023-03-21T18:11:44-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Compute LambdaFormInfo when using JavaScript backend.
CmmCgInfos is needed to write interface files, but the
JavaScript backend does not generate it, causing
"Name without LFInfo" warnings.
This patch adds a conservative but always correct
CmmCgInfos when the JavaScript backend is used.
Fixes #23053
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/926ad6ded5cb5e8162914e746ee001fc8d1658ec">926ad6de</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-03-22T01:03:08-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Be more careful about quantification
This MR is driven by #23051. It does several things:
* It is guided by the generalisation plan described in #20686.
But it is still far from a complete implementation of that plan.
* Add Note [Inferred type with escaping kind] to GHC.Tc.Gen.Bind.
This explains that we don't (yet, pending #20686) directly
prevent generalising over escaping kinds.
* In `GHC.Tc.Utils.TcMType.defaultTyVar` we default RuntimeRep
and Multiplicity variables, beause we don't want to quantify over
them. We want to do the same for a Concrete tyvar, but there is
nothing sensible to default it to (unless it has kind RuntimeRep,
in which case it'll be caught by an earlier case). So we promote
instead.
* Pure refactoring in GHC.Tc.Solver:
* Rename decideMonoTyVars to decidePromotedTyVars, since that's
what it does.
* Move the actual promotion of the tyvars-to-promote from
`defaultTyVarsAndSimplify` to `decidePromotedTyVars`. This is a
no-op; just tidies up the code. E.g then we don't need to
return the promoted tyvars from `decidePromotedTyVars`.
* A little refactoring in `defaultTyVarsAndSimplify`, but no
change in behaviour.
* When making a TauTv unification variable into a ConcreteTv
(in GHC.Tc.Utils.Concrete.makeTypeConcrete), preserve the occ-name
of the type variable. This just improves error messages.
* Kill off dead code: GHC.Tc.Utils.TcMType.newConcreteHole
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0ab0cc119c6d222d50e0970fddb679a6eeef80de">0ab0cc11</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:03:48-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use appropriate predicate for ManyUbxSums test (#22576)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/048c881ee5b11716e37cebe43f2d2eac878c04fb">048c881e</a></strong>
<div>
<span> by romes </span> <i> at 2023-03-22T01:04:24-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>fix: Incorrect @since annotations in GHC.TypeError
Fixes #23128
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a1528b68318d5b94acad1f427037e4d326847468">a1528b68</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:05:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use req_interp predicate for T16318 (#22370)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ad765b6f0bb23576fb4e7690a29fa07fc1dfff11">ad765b6f</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:05:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use req_interp predicate for T20214
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e0b8eaf3fc3d2ebbdcc86610b889930dbe5b4cdb">e0b8eaf3</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-03-22T09:50:13+00:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Refactor the constraint solver pipeline
The big change is to put the entire type-equality solver into
GHC.Tc.Solver.Equality, rather than scattering it over Canonical
and Interact. Other changes
* EqCt becomes its own data type, a bit like QCInst. This is
great because EqualCtList is then just [EqCt]
* New module GHC.Tc.Solver.Dict has come of the class-contraint
solver. In due course it will be all. One step at a time.
This MR is intended to have zero change in behaviour: it is a
pure refactor. It opens the way to subsequent tidying up, we
believe.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cedf9a3b7a74a7c1c09e8b994edc40a2447dae08">cedf9a3b</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-22T15:31:18-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.TcMType
Tracking ticket: #20119
MR: !10138
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30d45e971d94b3c28296a3f20f94275f38bc89d1">30d45e97</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T15:32:01-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use js_skip for T2615 (#22374)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8c98deba9a0b8136f858ecc5d7a6948dcf60820e">8c98deba</a></strong>
<div>
<span> by Armando Ramirez </span> <i> at 2023-03-23T09:19:32-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Optimized Foldable methods for Data.Functor.Compose
Explicitly define length, elem, etc. in Foldable instance for Data.Functor.Compose
Implementation of https://github.com/haskell/core-libraries-committee/issues/57
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bc0661081aa9c61cc031546cf2b7d58f46a4f5be">bc066108</a></strong>
<div>
<span> by Armando Ramirez </span> <i> at 2023-03-23T09:19:32-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Additional optimized versions
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/80fce576d001a6a1182d426020349e496b179496">80fce576</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-23T09:19:32-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Simplify minimum/maximum in instance Foldable (Compose f g)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8cb88a5ade9427ca2f26e7f2dbf9defb8fb0ed22">8cb88a5a</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-23T09:19:32-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Update changelog to mention changes to instance Foldable (Compose f g)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e1c8c41d62854553d889403d8ee52d120c26bc66">e1c8c41d</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-23T09:20:13-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.TyCl.PatSyn
Tracking ticket: #20117
MR: !10158
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f932c5890ec358aa0cbba547eb6982168e13da37">f932c589</a></strong>
<div>
<span> by Adam Gundry </span> <i> at 2023-03-24T02:36:09-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Allow WARNING pragmas to be controlled with custom categories
Closes #17209. This implements GHC Proposal 541, allowing a WARNING
pragma to be annotated with a category like so:
{-# WARNING in "x-partial" head "This function is undefined on empty lists." #-}
The user can then enable, disable and set the severity of such warnings
using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on. There
is a new warning group `-Wextended-warnings` containing all these warnings.
Warnings without a category are treated as if the category was `deprecations`,
and are (still) controlled by the flags `-Wdeprecations`
and `-Wwarnings-deprecations`.
Updates Haddock submodule.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0426515be8836acfdde7ddc9cf35a99a7a73f278">0426515b</a></strong>
<div>
<span> by Adam Gundry </span> <i> at 2023-03-24T02:36:09-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Move mention of warning groups change to 9.8.1 release notes
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8d783d24b9a617ad1e3038abeb75d322703ef65">b8d783d2</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-24T02:36:45-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>nativeGen/AArch64: Fix bitmask immediate predicate
Previously the predicate for determining whether a logical instruction
operand could be encoded as a bitmask immediate was far too
conservative. This meant that, e.g., pointer untagged required five
instructions whereas it should only require one.
Fixes #23030.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/46120bb637452be6e16e5dd7091c0b469a5adcd5">46120bb6</a></strong>
<div>
<span> by Joachim Breitner </span> <i> at 2023-03-24T13:09:43-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>User's guide: Improve docs for -Wall
previously it would list the warnings _not_ enabled by -Wall. That’s
unnecessary round-about and was out of date. So let's just name
the relevant warnings (based on `compiler/GHC/Driver/Flags.hs`).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/509d1f11bf4e7eb4b916ae1c33abc48047b3be0e">509d1f11</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-24T13:10:20-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>codeGen/tsan: Disable instrumentation of unaligned stores
There is some disagreement regarding the prototype of
`__tsan_unaligned_write` (specifically whether it takes just the written
address, or the address and the value as an argument). Moreover, I have
observed crashes which appear to be due to it. Disable instrumentation
of unaligned stores as a temporary mitigation.
Fixes #23096.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6a73655fd6d22f0fd7e1c24d0d07a573b6bdc042">6a73655f</a></strong>
<div>
<span> by Li-yao Xia </span> <i> at 2023-03-25T00:02:44-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>base: Document GHC versions associated with past base versions in the changelog
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43bd76946233fd0b21293917be8fd455341cb6d3">43bd7694</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-25T00:03:24-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add regression test for #17574
This test currently fails in the nonmoving way
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f2d56bf735185a59d7ce916edcf6a97f1401b230">f2d56bf7</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-25T00:03:24-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>fix: account for large and compact object stats with nonmoving gc
Make sure that we keep track of the size of large and compact objects that have been moved onto the nonmoving heap.
We keep track of their size and add it to the amount of live bytes in nonmoving segments to get the total size of the live nonmoving heap.
Resolves #17574
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7131b705d54ed7ed20e9946d9ace45228ec5febd">7131b705</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-25T00:04:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Modify ThreadId documentation and comments
For a long time, `GHC.Conc.Sync` has said
```haskell
-- ToDo: data ThreadId = ThreadId (Weak ThreadId#)
-- But since ThreadId# is unlifted, the Weak type must use open
-- type variables.
```
We are now actually capable of using `Weak# ThreadId#`, but the
world has moved on. To support the `Show` and `Ord` instances, we'd
need to store the thread ID number in the `ThreadId`. And it seems
very difficult to continue to support `threadStatus` in that regime,
since it needs to be able to explain how threads died. In addition,
garbage collection of weak references can be quite expensive, and it
would be hard to evaluate the cost over he whole ecosystem. As discussed
in
[this CLC issue](https://github.com/haskell/core-libraries-committee/issues/125),
it doesn't seem very likely that we'll actually switch to weak
references here.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c421bbbbf2a353858dda8f998d4997cce5977c03">c421bbbb</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T00:04:41-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>rts: Fix barriers of IND and IND_STATIC
Previously IND and IND_STATIC lacked the acquire barriers enjoyed by
BLACKHOLE. As noted in the (now updated) Note [Heap memory barriers],
this barrier is critical to ensure that the indirectee is visible to the
entering core.
Fixes #22872.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/62fa7faaf8ca2d34cda3e3b7c4c6b2d13efa16fe">62fa7faa</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-25T00:05:22-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Improve documentation of atomicModifyMutVar2#
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b2d14d0b8ebb517139c08934a52791f21fe893f6">b2d14d0b</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2023-03-25T03:46:43-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>rts: use performBlockingMajorGC in hs_perform_gc and fix ffi023
This patch does a few things:
- Add the missing RtsSymbols.c entry of performBlockingMajorGC
- Make hs_perform_gc call performBlockingMajorGC, which restores
previous behavior
- Use hs_perform_gc in ffi023
- Remove rts_clearMemory() call in ffi023, it now works again in some
test ways previously marked as broken. Fixes #23089
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9ae24ad3de71e14364665ff1741aa3551e7c526">d9ae24ad</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2023-03-25T03:46:44-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>testsuite: add the rts_clearMemory test case
This patch adds a standalone test case for rts_clearMemory that mimics
how it's typically used by wasm backend users and ensures this RTS API
isn't broken by future RTS refactorings. Fixes #23901.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/80729d96e47c99dc38e83612dfcfe01cf565eac0">80729d96</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-25T03:47:22-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Improve documentation for resizing of byte arrays
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c6ec4cd1a94a1b76b7b094d5c92ee605031ecf60">c6ec4cd1</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T20:23:47-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>rts: Don't rely on EXTERN_INLINE for slop-zeroing logic
Previously we relied on calling EXTERN_INLINE functions defined in
ClosureMacros.h from Cmm to zero slop. However, as far as I can tell,
this is no longer safe to do in C99 as EXTERN_INLINE definitions may be emitted
in each compilation unit.
Fix this by explicitly declaring a new set of non-inline functions in
ZeroSlop.c which can be called from Cmm and marking the ClosureMacros.h
definitions as INLINE_HEADER.
In the future we should try to eliminate EXTERN_INLINE.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c32abd4b936b3dfc61974ed5915c330fe7ed10d5">c32abd4b</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T20:23:48-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>rts: Fix capability-count check in zeroSlop
Previously `zeroSlop` examined `RtsFlags` to determine whether the
program was single-threaded. This is wrong; a program may be started
with `+RTS -N1` yet the process may later increase the capability count
with `setNumCapabilities`. This lead to quite subtle and rare crashes.
Fixes #23088.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/656d4cb3e3a450ececcc72ffd2aca6f8e6489102">656d4cb3</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-03-25T20:24:23-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add Eq/Ord instances for SSymbol, SChar, and SNat
This implements [CLC proposal #148](https://github.com/haskell/core-libraries-committee/issues/148).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4f93de888fb8be5241b476442045eb40b2a5abbd">4f93de88</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-26T15:33:02-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Update and expand atomic modification Haddocks
* The documentation for `atomicModifyIORef` and `atomicModifyIORef'`
were incomplete, and the documentation for `atomicModifyIORef` was
out of date. Update and expand.
* Remove a useless lazy pattern match in the definition of
`atomicModifyIORef`. The pair it claims to match lazily
was already forced by `atomicModifyIORef2`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e1fb56b24e2fe45a6f628f651bfc12b2b9743378">e1fb56b2</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-26T15:33:41-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Document the constructor name for lists
Derived `Data` instances use raw infix constructor names when applicable.
The `Data.Data [a]` instance, if derived, would have a constructor name
of `":"`. However, it actually uses constructor name `"(:)"`. Document this
peculiarity.
See https://github.com/haskell/core-libraries-committee/issues/147
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c1f755c4bebec04b8942f36c1f2a2a1772dbe28b">c1f755c4</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-03-27T22:09:41+01:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Make exprIsConApp_maybe a bit cleverer
Addresses #23159.
See Note Note [Exploit occ-info in exprIsConApp_maybe]
in GHC.Core.SimpleOpt.
Compile times go down very slightly, but always go down,
never up. Good!
Metrics: compile_time/bytes allocated
------------------------------------------------
CoOpt_Singletons(normal) -1.8%
T15703(normal) -1.2% GOOD
geo. mean -0.1%
minimum -1.8%
maximum +0.0%
Metric Decrease:
CoOpt_Singletons
T15703
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/76bb4c586084d7fdcf0e5ce52623abbfca527c55">76bb4c58</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-03-28T08:12:08-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add COMPLETE pragmas to TypeRep, SSymbol, SChar, and SNat
This implements
[CLC proposal #149](https://github.com/haskell/core-libraries-committee/issues/149).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e2fadbf6beff52951f339151ff8a30c710e867d0">e2fadbf6</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2023-03-29T23:30:42+02:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>WIP: Fix unification with oversaturated type families
unify_ty was incorrectly saying that F x y ~ T x are surely apart,
where F x y is an oversaturated type family and T x is a tyconapp.
As a result, the simplifier dropped a live case alternative (#23134).
</pre>
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compiler/GHC.hs
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compiler/GHC/Builtin/Names.hs
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compiler/GHC/Builtin/Types.hs
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compiler/GHC/Builtin/Uniques.hs
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compiler/GHC/Builtin/primops.txt.pp
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compiler/GHC/Cmm/ThreadSanitizer.hs
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compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
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compiler/GHC/CmmToLlvm.hs
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compiler/GHC/CmmToLlvm/Base.hs
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compiler/GHC/CmmToLlvm/CodeGen.hs
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compiler/GHC/CmmToLlvm/Ppr.hs
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compiler/GHC/Core/InstEnv.hs
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compiler/GHC/Core/SimpleOpt.hs
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compiler/GHC/Core/Unify.hs
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compiler/GHC/Data/Bag.hs
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compiler/GHC/Driver/Config/Diagnostic.hs
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compiler/GHC/Driver/Flags.hs
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compiler/GHC/Driver/Main.hs
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compiler/GHC/Driver/Session.hs
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compiler/GHC/Hs/Decls.hs
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compiler/GHC/Linker/Loader.hs
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compiler/GHC/Llvm/MetaData.hs
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compiler/GHC/Llvm/Ppr.hs
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compiler/GHC/Llvm/Syntax.hs
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compiler/GHC/Llvm/Types.hs
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compiler/GHC/Parser.y
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compiler/GHC/Parser/HaddockLex.x
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compiler/GHC/Rename/Env.hs
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