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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Krzysztof Gogolewski pushed to branch wip/unsafe-reflection 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/0eb1c3311aa01646fd19334f2541f96a701c1e20" style="color: #1068bf;">0eb1c331</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2022-11-28T08:55:53+00:00 </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;'>Move hs_mulIntMayOflo cbits to ghc-prim
It's only used by wasm NCG at the moment, but ghc-prim is a more
reasonable place for hosting out-of-line primops. Also, we only need a
single version of hs_mulIntMayOflo.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/36b53a9db6d8e7537a8e956a703e3ec3c5081fc3" style="color: #1068bf;">36b53a9d</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2022-11-28T09:05:57+00:00 </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;'>compiler: generate ccalls for clz/ctz/popcnt in wasm NCG
We used to generate a single wasm clz/ctz/popcnt opcode, but it's
wrong when it comes to subwords, so might as well generate ccalls for
them. See #22470 for details.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d4134e920a79ddfe7abb291964614e4f428c1a24" style="color: #1068bf;">d4134e92</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2022-11-28T23:48:14-05:00 </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;'>compiler: remove unused MO_U_MulMayOflo
We actually only emit MO_S_MulMayOflo and never emit MO_U_MulMayOflo anywhere.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8d15eadc2a791062f0392ec0d1b3a30f7e214fa4" style="color: #1068bf;">8d15eadc</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2022-11-29T03:09:31-05:00 </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;'>Killing cc_fundeps, streamlining kind equality orientation, and type equality processing order
Fixes: #217093
Associated to #19415
This change
* Flips the orientation of the the generated kind equality coercion in canEqLHSHetero;
* Removes `cc_fundeps` in CDictCan as the check was incomplete;
* Changes `canDecomposableTyConAppOk` to ensure we process kind equalities before type equalities and avoiding a call to `canEqLHSHetero` while processing wanted TyConApp equalities
* Adds 2 new tests for validating the change
- testsuites/typecheck/should_compile/T21703.hs and
- testsuites/typecheck/should_fail/T19415b.hs (a simpler version of T19415.hs)
* Misc: Due to the change in the equality direction some error messages now have flipped type mismatch errors
* Changes in Notes:
- Note [Fundeps with instances, and equality orientation] supercedes Note [Fundeps with instances]
- Added Note [Kind Equality Orientation] to visualize the kind flipping
- Added Note [Decomposing Dependent TyCons and Processing Wanted Equalties]
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/646969d4da90b8c52c3b3320b01f26452d786380" style="color: #1068bf;">646969d4</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2022-11-29T03:10:13-05:00 </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;'>Change printing of sized literals to match the proposal
Literals in Core were printed as e.g. 0xFF#16 :: Int16#.
The proposal 451 now specifies syntax 0xFF#Int16.
This change affects the Core printer only - more to be done later.
Part of #21422.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/02e282ec8ab2fb3d28c754ca7967f79c70a48c4a" style="color: #1068bf;">02e282ec</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2022-11-29T03:10:48-05:00 </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;'>Be a bit more selective about floating bottoming expressions
This MR arranges to float a bottoming expression to the top
only if it escapes a value lambda.
See #22494 and Note [Floating to the top] in SetLevels.
This has a generally beneficial effect in nofib
+-------------------------------++----------+
| ||tsv (rel) |
+===============================++==========+
| imaginary/paraffins || -0.93% |
| imaginary/rfib || -0.05% |
| real/fem || -0.03% |
| real/fluid || -0.01% |
| real/fulsom || +0.05% |
| real/gamteb || -0.27% |
| real/gg || -0.10% |
| real/hidden || -0.01% |
| real/hpg || -0.03% |
| real/scs || -11.13% |
| shootout/k-nucleotide || -0.01% |
| shootout/n-body || -0.08% |
| shootout/reverse-complement || -0.00% |
| shootout/spectral-norm || -0.02% |
| spectral/fibheaps || -0.20% |
| spectral/hartel/fft || -1.04% |
| spectral/hartel/solid || +0.33% |
| spectral/hartel/wave4main || -0.35% |
| spectral/mate || +0.76% |
+===============================++==========+
| geom mean || -0.12% |
The effect on compile time is generally slightly beneficial
Metrics: compile_time/bytes allocated
----------------------------------------------
MultiLayerModulesTH_OneShot(normal) +0.3%
PmSeriesG(normal) -0.2%
PmSeriesT(normal) -0.1%
T10421(normal) -0.1%
T10421a(normal) -0.1%
T10858(normal) -0.1%
T11276(normal) -0.1%
T11303b(normal) -0.2%
T11545(normal) -0.1%
T11822(normal) -0.1%
T12150(optasm) -0.1%
T12234(optasm) -0.3%
T13035(normal) -0.2%
T16190(normal) -0.1%
T16875(normal) -0.4%
T17836b(normal) -0.2%
T17977(normal) -0.2%
T17977b(normal) -0.2%
T18140(normal) -0.1%
T18282(normal) -0.1%
T18304(normal) -0.2%
T18698a(normal) -0.1%
T18923(normal) -0.1%
T20049(normal) -0.1%
T21839r(normal) -0.1%
T5837(normal) -0.4%
T6048(optasm) +3.2% BAD
T9198(normal) -0.2%
T9630(normal) -0.1%
TcPlugin_RewritePerf(normal) -0.4%
hard_hole_fits(normal) -0.1%
geo. mean -0.0%
minimum -0.4%
maximum +3.2%
The T6048 outlier is hard to pin down, but it may be the effect of
reading in more interface files definitions. It's a small program for
which compile time is very short, so I'm not bothered about it.
Metric Increase:
T6048
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab23dc5e04a79f160e22869cbf604b59e885fd30" style="color: #1068bf;">ab23dc5e</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2022-11-29T03:11:25-05:00 </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: Mark unpack_sums_6 as fragile due to #22504
This test is explicitly dependent upon runtime, which is generally not
appropriate given that the testsuite is run in parallel and generally
saturates the CPU.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/def47dd32491311289bff26230b664c895f178cc" style="color: #1068bf;">def47dd3</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2022-11-29T03:11:25-05:00 </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: Don't use grep -q in unpack_sums_7
`grep -q` closes stdin as soon as it finds the pattern it is looking
for, resulting in #22484.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cc25d52e0f65d54c052908c7d91d5946342ab88a" style="color: #1068bf;">cc25d52e</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2022-11-29T09:44:31+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;'>Add Javascript backend
Add JS backend adapted from the GHCJS project by Luite Stegeman.
Some features haven't been ported or implemented yet. Tests for these
features have been disabled with an associated gitlab ticket.
Bump array submodule
Work funded by IOG.
Co-authored-by: Jeffrey Young <jeffrey.young@iohk.io>
Co-authored-by: Luite Stegeman <stegeman@gmail.com>
Co-authored-by: Josh Meredith <joshmeredith2008@gmail.com>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/68c966cd3c9d581bac4573807e433fe8d063445f" style="color: #1068bf;">68c966cd</a></strong>
<div>
<span> by sheaf </span> <i> at 2022-11-30T09:31:25-05:00 </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 @since annotations on WithDict and Coercible
Fixes #22453
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a3a8e9e968ff9b10c6785d53a5f1c8fcef6db72b" style="color: #1068bf;">a3a8e9e9</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2022-11-30T09:32:03-05:00 </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;'>Be more careful in GHC.Tc.Solver.Interact.solveOneFromTheOther
We were failing to account for the cc_pend_sc flag in this
important function, with the result that we expanded superclasses
forever.
Fixes #22516.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a9d9b8c0458e838f331ead62dca272665ecbf20d" style="color: #1068bf;">a9d9b8c0</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2022-11-30T09:32:03-05:00 </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 mkNakedFunTy in tcPatSynSig
As #22521 showed, in tcPatSynSig we make a "fake type" to
kind-generalise; and that type has unzonked type variables in it. So
we must not use `mkFunTy` (which checks FunTy's invariants) via
`mkPhiTy` when building this type. Instead we need to use
`mkNakedFunTy`.
Easy fix.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/31462d98c31e3ef48af2f6c6f2d379d74ccc63f5" style="color: #1068bf;">31462d98</a></strong>
<div>
<span> by Andreas Klebinger </span> <i> at 2022-11-30T14:50:58-05:00 </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;'>Properly cast values when writing/reading unboxed sums.
Unboxed sums might store a Int8# value as Int64#. This patch
makes sure we keep track of the actual value type.
See Note [Casting slot arguments] for the details.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/10a2a7de64c52fcff07572bc0cd396393829a487" style="color: #1068bf;">10a2a7de</a></strong>
<div>
<span> by Oleg Grenrus </span> <i> at 2022-11-30T14:51:39-05:00 </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;'>Move Void to GHC.Base...
This change would allow `Void` to be used deeper in module graph.
For example exported from `Prelude` (though that might be already
possible).
Also this change includes a change `stimes @Void _ x = x`,
https://github.com/haskell/core-libraries-committee/issues/95
While the above is not required, maintaining old stimes behavior
would be tricky as `GHC.Base` doesn't know about `Num` or `Integral`,
which would require more hs-boot files.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b4cfa8e235715d8c73b2ba0ba05ed8ef92629218" style="color: #1068bf;">b4cfa8e2</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2022-11-30T14:52:24-05:00 </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;'>DmdAnal: Reflect the `seq` of strict fields of a DataCon worker (#22475)
See the updated `Note [Data-con worker strictness]`
and the new `Note [Demand transformer for data constructors]`.
Fixes #22475.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d87f28d810b9c536ca4db7f363163e6d0dd6c93c" style="color: #1068bf;">d87f28d8</a></strong>
<div>
<span> by Baldur Blöndal </span> <i> at 2022-11-30T21:16:36+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;'>Make Functor a quantified superclass of Bifunctor.
See https://github.com/haskell/core-libraries-committee/issues/91 for
discussion.
This change relates Bifunctor with Functor by requiring second = fmap.
Moreover this change is a step towards unblocking the major version bump
of bifunctors and profunctors to major version 6. This paves the way to
move the Profunctor class into base. For that Functor first similarly
becomes a superclass of Profunctor in the new major version 6.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/72cf4c5d74923d267dab2dc260af090609066b04" style="color: #1068bf;">72cf4c5d</a></strong>
<div>
<span> by doyougnu </span> <i> at 2022-12-01T12:36:44-05:00 </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;'>FastString: SAT bucket_match
Metric Decrease:
MultiLayerModulesTH_OneShot
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/afc2540daf6ca6baa09ab147b792da08d66d878c" style="color: #1068bf;">afc2540d</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2022-12-01T12:37:20-05:00 </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 a missing varToCoreExpr in etaBodyForJoinPoint
This subtle bug showed up when compiling a library with 9.4.
See #22491. The bug is present in master, but it is hard to
trigger; the new regression test T22491 fails in 9.4.
The fix was easy: just add a missing varToCoreExpr in
etaBodyForJoinPoint.
The fix is definitely right though!
I also did some other minor refatoring:
* Moved the preInlineUnconditionally test in simplExprF1 to
before the call to joinPointBinding_maybe, to avoid fruitless
eta-expansion.
* Added a boolean from_lam flag to simplNonRecE, to avoid two
fruitless tests, and commented it a bit better.
These refactorings seem to save 0.1% on compile-time allocation in
perf/compiler; with a max saving of 1.4% in T9961
Metric Decrease:
T9961
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/81eeec7f9a3c826208f05f264a22c80e06139f07" style="color: #1068bf;">81eeec7f</a></strong>
<div>
<span> by M Farkas-Dyck </span> <i> at 2022-12-01T12:37:56-05:00 </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;'>CI: Forbid the fully static build on Alpine to fail.
To do so, we mark some tests broken in this configuration.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c5d1bf2962fc88f92c71b771ab16b3c8c096682a" style="color: #1068bf;">c5d1bf29</a></strong>
<div>
<span> by Bryan Richter </span> <i> at 2022-12-01T12:37:56-05:00 </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;'>CI: Remove ARMv7 jobs
These jobs fail (and are allowed to fail) nearly every time.
Soon they won't even be able to run at all, as we won't currently have
runners that can run them.
Fixing the latter problem is tracked in #22409.
I went ahead and removed all settings and configurations.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d82992fd4b62a81607af1667e4ff755d58af291f" style="color: #1068bf;">d82992fd</a></strong>
<div>
<span> by Bryan Richter </span> <i> at 2022-12-01T12:37:56-05:00 </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;'>CI: Fix CI lint
Failure was introduced by conflicting changes to gen_ci.hs that did
*not* trigger git conflicts.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ce126993688e7ea803aee5b831655e318bde58d3" style="color: #1068bf;">ce126993</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2022-12-02T01:22:12-05:00 </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;'>Refactor TyCon to have a top-level product
This patch changes the representation of TyCon so that it has
a top-level product type, with a field that gives the details
(newtype, type family etc), #22458.
Not much change in allocation, but execution seems to be a bit
faster.
Includes a change to the haddock submodule to adjust for API changes.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/74c767df770766d8d52e87b9ff7da10f94620a91" style="color: #1068bf;">74c767df</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2022-12-02T01:22:48-05:00 </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;'>ApplicativeDo: Set pattern location before running exhaustiveness checker
This improves the error messages of the exhaustiveness checker when
checking statements which have been moved around with ApplicativeDo.
Before:
Test.hs:2:3: warning: [GHC-62161] [-Wincomplete-uni-patterns]
Pattern match(es) are non-exhaustive
In a pattern binding:
Patterns of type ‘Maybe ()’ not matched: Nothing
|
2 | let x = ()
| ^^^^^^^^^^
After:
Test.hs:4:3: warning: [GHC-62161] [-Wincomplete-uni-patterns]
Pattern match(es) are non-exhaustive
In a pattern binding:
Patterns of type ‘Maybe ()’ not matched: Nothing
|
4 | ~(Just res1) <- seq x (pure $ Nothing @())
|
Fixes #22483
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85ecc1a0fd6536149ae2b54f4b1985d80c0e21cb" style="color: #1068bf;">85ecc1a0</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2022-12-02T19:46:43-05:00 </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 special case for :Main module in `GHC.IfaceToCore.mk_top_id`
See Note [Root-main Id]
The `:Main` special binding is actually defined in the current module
(hence don't go looking for it externally) but the module name is rOOT_MAIN
rather than the current module so we need this special case.
There was already some similar logic in `GHC.Rename.Env` for
External Core, but now the "External Core" is in interface files it
needs to be moved here instead.
Fixes #22405
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/108c319f47e31fb307d7aff718b40578c8026ddd" style="color: #1068bf;">108c319f</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2022-12-02T19:47:18-05:00 </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 linearity checking in Lint
Lint was not able to see that x*y <= x*y, because this inequality
was decomposed to x <= x*y && y <= x*y, but there was no rule
to see that x <= x*y.
Fixes #22546.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bb674262bd472ffeba145ebd4cd510ca16436c08" style="color: #1068bf;">bb674262</a></strong>
<div>
<span> by Bryan Richter </span> <i> at 2022-12-03T04:38:46-05:00 </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;'>Mark T16916 fragile
See https://gitlab.haskell.org/ghc/ghc/-/issues/16966
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5d267d4683c2733dee7621e480c5e70ed47a4592" style="color: #1068bf;">5d267d46</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2022-12-03T04:39:22-05:00 </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;'>Refactor: FreshOrReuse instead of addTyClTyVarBinds
This is a refactoring that should have no effect on observable behavior.
Prior to this change, GHC.HsToCore.Quote contained a few closely related
functions to process type variable bindings: addSimpleTyVarBinds,
addHsTyVarBinds, addQTyVarBinds, and addTyClTyVarBinds.
We can classify them by their input type and name generation strategy:
Fresh names only Reuse bound names
+---------------------+-------------------+
[Name] | addSimpleTyVarBinds | |
[LHsTyVarBndr flag GhcRn] | addHsTyVarBinds | |
LHsQTyVars GhcRn | addQTyVarBinds | addTyClTyVarBinds |
+---------------------+-------------------+
Note how two functions are missing. Because of this omission, there were
two places where a LHsQTyVars value was constructed just to be able to pass it
to addTyClTyVarBinds:
1. mk_qtvs in addHsOuterFamEqnTyVarBinds -- bad
2. mkHsQTvs in repFamilyDecl -- bad
This prevented me from making other changes to LHsQTyVars, so the main
goal of this refactoring is to get rid of those workarounds.
The most direct solution would be to define the missing functions.
But that would lead to a certain amount of code duplication. To avoid
code duplication, I factored out the name generation strategy into a
function parameter:
data FreshOrReuse
= FreshNamesOnly
| ReuseBoundNames
addSimpleTyVarBinds :: FreshOrReuse -> ...
addHsTyVarBinds :: FreshOrReuse -> ...
addQTyVarBinds :: FreshOrReuse -> ...
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c189b831c74a550ddb3b94cf9b9f8922856b6990" style="color: #1068bf;">c189b831</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2022-12-03T04:39:22-05:00 </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;'>addHsOuterFamEqnTyVarBinds: use FreshNamesOnly for explicit binders
Consider this example:
[d| instance forall a. C [a] where
type forall b. G [a] b = Proxy b |]
When we process "forall b." in the associated type instance, it is
unambiguously the binding site for "b" and we want a fresh name for it.
Therefore, FreshNamesOnly is more fitting than ReuseBoundNames.
This should not have any observable effect but it avoids pointless
lookups in the MetaEnv.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4251226448f34403b07822f3017845c4855f4dea" style="color: #1068bf;">42512264</a></strong>
<div>
<span> by Ross Paterson </span> <i> at 2022-12-03T10:32:45+00:00 </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;'>Handle type data declarations in Template Haskell quotations and splices (fixes #22500)
This adds a TypeDataD constructor to the Template Haskell Dec type,
and ensures that the constructors it contains go in the TyCls namespace.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1a767fa359d22ca7637af41e29434e76487c3f21" style="color: #1068bf;">1a767fa3</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2022-12-05T05:18:50-05:00 </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 BufSpan to EpaLocation (#22319, #22558)
The key part of this patch is the change to mkTokenLocation:
- mkTokenLocation (RealSrcSpan r _) = TokenLoc (EpaSpan r)
+ mkTokenLocation (RealSrcSpan r mb) = TokenLoc (EpaSpan r mb)
mkTokenLocation used to discard the BufSpan, but now it is saved and can
be retrieved from LHsToken or LHsUniToken.
This is made possible by the following change to EpaLocation:
- data EpaLocation = EpaSpan !RealSrcSpan
+ data EpaLocation = EpaSpan !RealSrcSpan !(Strict.Maybe BufSpan)
| ...
The end goal is to make use of the BufSpan in Parser/PostProcess/Haddock.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a90bb4fcb3a36c7409f6f584b0ea43be60d2c690" style="color: #1068bf;">a90bb4fc</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2022-12-06T18:29:16+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;'>Mark Type.Reflection.Unsafe as Unsafe
This module can be used to construct ill-formed TypeReps, so it should
be Unsafe.
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
29 changed files:
</h4>
<ul>
<li class="file-stats">
<a href="#587d266bb27a4dc3022bbed44dfa19849df3044c" style="color: #1068bf;">
.gitlab-ci.yml
</a>
</li>
<li class="file-stats">
<a href="#157f7634c25bc6366cb7c9c9edb48e819dce38db" style="color: #1068bf;">
.gitlab/ci.sh
</a>
</li>
<li class="file-stats">
<a href="#a6883fe5ffe69ebc49b16c7e553faba405221f57" style="color: #1068bf;">
.gitlab/gen_ci.hs
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<a href="#4f7fc727dfc06c2591e6043f44b9602eddfc3673" style="color: #1068bf;">
.gitlab/jobs.yaml
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<a href="#0887cf39c5cdf9cf8d6758f410d7dab3023c0d77" style="color: #1068bf;">
compiler/GHC/Builtin/Names.hs
</a>
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<a href="#06764eb0158306b83ab1998d18316392a51838c2" style="color: #1068bf;">
compiler/GHC/Builtin/Names/TH.hs
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<a href="#a1519b7fe8a0d4b42e4aaa927fb6ab5b5da0fcdd" style="color: #1068bf;">
compiler/GHC/Builtin/PrimOps.hs
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compiler/GHC/Builtin/PrimOps/Casts.hs
</span>
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<a href="#377cfd14c1f92357465df995ec6537b074051322" style="color: #1068bf;">
compiler/GHC/Builtin/Types.hs
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<a href="#db697f6aea9f93f1583f1d5c62d25570a1e07f73" style="color: #1068bf;">
compiler/GHC/Cmm/CLabel.hs
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<a href="#c898e00d01234ab22d3b485be68db3645f52f220" style="color: #1068bf;">
compiler/GHC/Cmm/MachOp.hs
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compiler/GHC/Cmm/Parser.y
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<a href="#6997a0cd37829d3d08db1c48185aaa3d7dfc3e6b" style="color: #1068bf;">
compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
</a>
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<a href="#2c1bfa1814c69d8fa9f84aed9479c73d710e552b" style="color: #1068bf;">
compiler/GHC/CmmToAsm/Wasm/Asm.hs
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compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
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compiler/GHC/CmmToAsm/Wasm/Types.hs
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compiler/GHC/CmmToC.hs
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<a href="#a49dbda5c8a9c380f638f55cf5ade791db0017cc" style="color: #1068bf;">
compiler/GHC/CmmToLlvm/CodeGen.hs
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<a href="#6fcf64907fb5bdd93082d2d1eb94e4566e735865" style="color: #1068bf;">
compiler/GHC/Core/DataCon.hs
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<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e" style="color: #1068bf;">
compiler/GHC/Core/Lint.hs
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compiler/GHC/Core/Map/Type.hs
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<a href="#c3967bb9d3e8f5aae2dd111b5a335b48c21c1999" style="color: #1068bf;">
compiler/GHC/Core/Opt/Arity.hs
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<a href="#8104fa1b71db6cfc4eb90cd769463d9eb9004619" style="color: #1068bf;">
compiler/GHC/Core/Opt/DmdAnal.hs
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<a href="#cc763cdd1967f5d921161a32f64136cfcf0332c5" style="color: #1068bf;">
compiler/GHC/Core/Opt/SetLevels.hs
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<a href="#ae6d91a5d028418bbf1431347d659e744e0a3128" style="color: #1068bf;">
compiler/GHC/Core/Opt/Simplify/Iteration.hs
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<a href="#f4421b4e35592648510c877ecf55b1af2b96dcee" style="color: #1068bf;">
compiler/GHC/Core/Opt/WorkWrap/Utils.hs
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compiler/GHC/Core/TyCo/FVs.hs-boot
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compiler/GHC/Core/TyCo/Rep.hs
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compiler/GHC/Core/TyCo/Rep.hs-boot
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