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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Vladislav Zavialov pushed to branch wip/int-index/emb-type
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/54e41b164f79ad74c33f556fc82d042441ed3bfb" style="color: #1068bf;">54e41b16</a></strong>
<div>
<span>by Teo Camarasu</span>
<i>at 2022-10-15T18:09:24+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;'>rts: ensure we are below maxHeapSize after returning megablocks
When the heap is heavily block fragmented the live byte size might be
low while the memory usage is high. We want to ensure that heap overflow
triggers in these cases.
We do so by checking that we can return enough megablocks to
under maxHeapSize at the end of GC.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/29bb90db7e0756cd7dda96d9a61c3ab0abe769c2" style="color: #1068bf;">29bb90db</a></strong>
<div>
<span>by Teo Camarasu</span>
<i>at 2022-10-15T18:09:24+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;'>rts: trigger a major collection if megablock usage exceeds maxHeapSize
When the heap is suffering from block fragmentation, live bytes might be
low while megablock usage is high.
If megablock usage exceeds maxHeapSize, we want to trigger a major GC to
try to recover some memory otherwise we will die from a heapOverflow at
the end of the GC.
Fixes #21927
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4a4641ca2f2a157dab0fe2df5316f79ffb52c047" style="color: #1068bf;">4a4641ca</a></strong>
<div>
<span>by Teo Camarasu</span>
<i>at 2022-10-15T18:11:29+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 realease note for #21927
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c1e5719aa500cb9e0f2549eb9b9e2255038ac35d" style="color: #1068bf;">c1e5719a</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2022-10-17T11:58:46-04:00</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;'>DmdAnal: Look through unfoldings of DataCon wrappers (#22241)
Previously, the demand signature we computed upfront for a DataCon wrapper
lacked boxity information and was much less precise than the demand transformer
for the DataCon worker.
In this patch we adopt the solution to look through unfoldings of DataCon
wrappers during Demand Analysis, but still attach a demand signature for other
passes such as the Simplifier.
See `Note [DmdAnal for DataCon wrappers]` for more details.
Fixes #22241.
</pre>
</li>
<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/0ac6042302219b162a23b85f637bcc8fa27fafaa" style="color: #1068bf;">0ac60423</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2022-10-18T03:34:47-04:00</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/9ecd1ac03d9cd2eea8e2b50233a08fd3d9cca7c7" style="color: #1068bf;">9ecd1ac0</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-18T03:35:38-04:00</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/f60244d7b24a595e9eb68ee3254bbe52fc00fdb8" style="color: #1068bf;">f60244d7</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2022-10-18T03:36:15-04:00</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;'>configure: Bump minimum bootstrap GHC version
Fixes #22245
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ba4bd4a48223bc9b215cfda138a5de9f99c87cdf" style="color: #1068bf;">ba4bd4a4</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-18T03:36:55-04:00</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;'>Build System: Remove out-of-date comment about make build system
Both make and hadrian interleave compilation of modules of different
modules and don't respect the package boundaries. Therefore I just
remove this comment which points out this "difference".
Fixes #22253
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e1bbd36841e19812c7ed544b66256da82ce68fd5" style="color: #1068bf;">e1bbd368</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-18T16:15:49+02:00</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;'>Allow configuration of error message printing
This MR implements the idea of #21731 that the printing of a diagnostic
method should be configurable at the printing time.
The interface of the `Diagnostic` class is modified from:
```
class Diagnostic a where
diagnosticMessage :: a -> DecoratedSDoc
diagnosticReason :: a -> DiagnosticReason
diagnosticHints :: a -> [GhcHint]
```
to
```
class Diagnostic a where
type DiagnosticOpts a
defaultDiagnosticOpts :: DiagnosticOpts a
diagnosticMessage :: DiagnosticOpts a -> a -> DecoratedSDoc
diagnosticReason :: a -> DiagnosticReason
diagnosticHints :: a -> [GhcHint]
```
and so each `Diagnostic` can implement their own configuration record
which can then be supplied by a client in order to dictate how to print
out the error message.
At the moment this only allows us to implement #21722 nicely but in
future it is more natural to separate the configuration of how much
information we put into an error message and how much we decide to print
out of it.
Updates Haddock submodule
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/99dc3e3d76daab80a5c5209a3e0c44c9e4664e06" style="color: #1068bf;">99dc3e3d</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-18T16:15:53+02:00</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 -fsuppress-error-contexts to disable printing error contexts in errors
In many development environments, the source span is the primary means
of seeing what an error message relates to, and the In the expression:
and In an equation for: clauses are not particularly relevant. However,
they can grow to be quite long, which can make the message itself both
feel overwhelming and interact badly with limited-space areas.
It's simple to implement this flag so we might as well do it and give
the user control about how they see their messages.
Fixes #21722
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5b3a992f5d166007c3c5a22f120ed08e0a27f01a" style="color: #1068bf;">5b3a992f</a></strong>
<div>
<span>by Dai</span>
<i>at 2022-10-19T10:45:45-04:00</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 VecSlot for unboxed sums of SIMD vectors
This patch adds the missing `VecRep` case to `primRepSlot` function and
all the necessary machinery to carry this new `VecSlot` through code
generation. This allows programs involving unboxed sums of SIMD vectors
to be written and compiled.
Fixes #22187
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6d7d91817795d7ee7f45557411368a1738daa488" style="color: #1068bf;">6d7d9181</a></strong>
<div>
<span>by sheaf</span>
<i>at 2022-10-19T10:45:45-04:00</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 SIMD conversions
This patch makes it so that packing/unpacking SIMD
vectors always uses the right sized types, e.g.
unpacking a Word16X4# will give a tuple of Word16#s.
As a result, we can get rid of the conversion instructions
that were previously required.
Fixes #22296
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3be48877e204fca8e5d5ab984186e0d20d81f262" style="color: #1068bf;">3be48877</a></strong>
<div>
<span>by sheaf</span>
<i>at 2022-10-19T10:45:45-04:00</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;'>Cmm Lint: relax SIMD register assignment check
As noted in #22297, SIMD vector registers can be used
to store different kinds of values, e.g. xmm1 can be used
both to store integer and floating point values.
The Cmm type system doesn't properly account for this, so
we weaken the Cmm register assignment lint check to only
compare widths when comparing a vector type with its
allocated vector register.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f7b7a3122185222d5059e37315991afcf319e43c" style="color: #1068bf;">f7b7a312</a></strong>
<div>
<span>by sheaf</span>
<i>at 2022-10-19T10:45:45-04:00</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;'>Disable some SIMD tests on non-X86 architectures
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/83638dce4e20097b9b7073534e488a92dce6e88f" style="color: #1068bf;">83638dce</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-19T10:46:29-04:00</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;'>Scrub various partiality involving lists (again).
Lets us avoid some use of `head` and `tail`, and some panics.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c3732c6210972a992e1153b0667cf8abf0351acd" style="color: #1068bf;">c3732c62</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-19T10:47:13-04:00</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;'>Enforce invariant of `ListBag` constructor.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/488d36311709f958f6c759952fc8379b231e69ca" style="color: #1068bf;">488d3631</a></strong>
<div>
<span>by Bodigrim</span>
<i>at 2022-10-19T10:47:52-04:00</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;'>More precise types for fields of OverlappingInstances and UnsafeOverlap in TcSolverReportMsg
It's clear from asserts in `GHC.Tc.Errors` that `overlappingInstances_matches`
and `unsafeOverlapped` are supposed to be non-empty, and `unsafeOverlap_matches`
contains a single instance, but these invariants are immediately lost afterwards
and not encoded in types. This patch enforces the invariants by pattern matching
and makes types more precise, avoiding asserts and partial functions such as `head`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/607ce263fd8304d02c24e997abc0d17ead1cb19b" style="color: #1068bf;">607ce263</a></strong>
<div>
<span>by sheaf</span>
<i>at 2022-10-19T10:47:52-04:00</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;'>Rename unsafeOverlap_matches -> unsafeOverlap_match in UnsafeOverlap</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1fab959843a27a3acfa04b435241688cad3ab713" style="color: #1068bf;">1fab9598</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-19T10:48:29-04:00</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 SpliceTypes test for hie files
This test checks that typed splices and quotes get the right type
information when used in hiefiles.
See #21619
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a8b52786326b5c931daf19222be87c58e2b8cab8" style="color: #1068bf;">a8b52786</a></strong>
<div>
<span>by Jan Hrček</span>
<i>at 2022-10-19T10:49:09-04:00</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>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1dab116784e480ab277623e1bd8d78beadcbc433" style="color: #1068bf;">1dab1167</a></strong>
<div>
<span>by Gergő Érdi</span>
<i>at 2022-10-19T10:49:51-04:00</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 typo in `Opt_WriteIfSimplifiedCore`'s name
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b17cfc9c4b341e122294c0701803fc8f521fa210" style="color: #1068bf;">b17cfc9c</a></strong>
<div>
<span>by sheaf</span>
<i>at 2022-10-19T10:50:37-04:00</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;'>TyEq:N assertion: only for saturated applications
The assertion that checked TyEq:N in canEqCanLHSFinish incorrectly
triggered in the case of an unsaturated newtype TyCon heading the RHS,
even though we can't unwrap such an application. Now, we only trigger
an assertion failure in case of a saturated application of a newtype
TyCon.
Fixes #22310
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ff6f2228bd03be3dd55d0014fd6d2e948a6c9f7c" style="color: #1068bf;">ff6f2228</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-20T16:15:51-04:00</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;'>CoreToStg: purge `DynFlags`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1ebd521f848289a99993f95af4e2021023537ad5" style="color: #1068bf;">1ebd521f</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2022-10-20T16:16:27-04:00</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;'>ci: Make fat014 test robust
For some reason I implemented this as a makefile test rather than a
ghci_script test. Hopefully making it a ghci_script test makes it more
robust.
Fixes #22313
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8cd6f435e60f9dd14ad55a0002ff833536e9ccb2" style="color: #1068bf;">8cd6f435</a></strong>
<div>
<span>by Curran McConnell</span>
<i>at 2022-10-21T02:58:01-04:00</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;'>remove a no-warn directive from GHC.Cmm.ContFlowOpt
This patch is motivated by the desire to remove the {-# OPTIONS_GHC
-fno-warn-incomplete-patterns #-} directive at the top of
GHC.Cmm.ContFlowOpt. (Based on the text in this coding standards doc, I
understand it's a goal of the project to remove such directives.) I
chose this task because I'm a new contributor to GHC, and it seemed like
a good way to get acquainted with the patching process.
In order to address the warning that arose when I removed the no-warn
directive, I added a case to removeUnreachableBlocksProc to handle the
CmmData constructor. Clearly, since this partial function has not been
erroring out in the wild, its inputs are always in practice wrapped by
the CmmProc constructor. Therefore the CmmData case is handled by a
precise panic (which is an improvement over the partial pattern match
from before).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a2af7c4c59ef24a71cc6cab7bd6b07d12f02aad1" style="color: #1068bf;">a2af7c4c</a></strong>
<div>
<span>by Nicolas Trangez</span>
<i>at 2022-10-21T02:58:39-04:00</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;'>build: get rid of `HAVE_TIME_H`
As advertized by `autoreconf`:
> All current systems provide time.h; it need not be checked for.
Hence, remove the check for it in `configure.ac` and remove conditional
inclusion of the header in `HAVE_TIME_H` blocks where applicable.
The `time.h` header was being included in various source files without a
`HAVE_TIME_H` guard already anyway.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/25cdc63044be34e5eb3ef478910bd5eeb2b5093f" style="color: #1068bf;">25cdc630</a></strong>
<div>
<span>by Nicolas Trangez</span>
<i>at 2022-10-21T02:58:39-04:00</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;'>rts: remove use of `TIME_WITH_SYS_TIME`
`autoreconf` will insert an `m4_warning` when the obsolescent
`AC_HEADER_TIME` macro is used:
> Update your code to rely only on HAVE_SYS_TIME_H,
> then remove this warning and the obsolete code below it.
> All current systems provide time.h; it need not be checked for.
> Not all systems provide sys/time.h, but those that do, all allow
> you to include it and time.h simultaneously.
Presence of `sys/time.h` was already checked in an earlier
`AC_CHECK_HEADERS` invocation, so `AC_HEADER_TIME` can be dropped and
guards relying on `TIME_WITH_SYS_TIME` can be reworked to
(unconditionally) include `time.h` and include `sys/time.h` based on
`HAVE_SYS_TIME_H`.
Note the documentation of `AC_HEADER_TIME` in (at least) Autoconf 2.67
says
> This macro is obsolescent, as current systems can include both files
> when they exist. New programs need not use this macro.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1fe7921c283ccd4048fd6c1e410100e3953e2710" style="color: #1068bf;">1fe7921c</a></strong>
<div>
<span>by Eric Lindblad</span>
<i>at 2022-10-21T02:59:21-04:00</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;'>runhaskell</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e3b3986e2f06880114644069da797201ee0a53cb" style="color: #1068bf;">e3b3986e</a></strong>
<div>
<span>by David Feuer</span>
<i>at 2022-10-21T03:00:00-04:00</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;'>Document how to quote certain names with spaces
Quoting a name for Template Haskell is a bit tricky if the second
character of that name is a single quote. The User's Guide falsely
claimed that it was impossible. Document how to do it.
Fixes #22236</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0eba81e8b02cb964cd1be5a6161e81eef3ef5870" style="color: #1068bf;">0eba81e8</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2022-10-21T03:00:00-04:00</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 syntax</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a4dbd102af1989526ca87f4dd949f72231284e68" style="color: #1068bf;">a4dbd102</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2022-10-21T09:11:12-04:00</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 manifest filename when writing Windows .rc files
As noted in #12971, we previously used `show` which resulted in
inappropriate escaping of non-ASCII characters.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30f0d9a9ded55a822e094847d5ac8087262fb8da" style="color: #1068bf;">30f0d9a9</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2022-10-21T09:11:12-04:00</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;'>Write response files in UTF-8 on Windows
This reverts the workaround introduced in
f63c8ef33ec9666688163abe4ccf2d6c0428a7e7, which taught our response file
logic to write response files with the `latin1` encoding to workaround
`gcc`'s lacking Unicode support. This is now no longer necessary (and in
fact actively unhelpful) since we rather use Clang.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8304648731f1430dba9037f31107d75b3da78b0" style="color: #1068bf;">b8304648</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-21T09:11:56-04:00</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;'>Scrub some partiality in `GHC.Core.Opt.Simplify.Utils`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6863ab7e6643773e11549b38bf54515509d5abcf" style="color: #1068bf;">6863ab7e</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2022-10-21T18:23:59+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;'>WIP: vdq
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">30 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c" style="color: #1068bf;">
compiler/GHC.hs
</a>
</li>
<li class="file-stats">
<a href="#451725cc4e5d443a3b7c2adcdf224840f953b7e2" style="color: #1068bf;">
compiler/GHC/Builtin/primops.txt.pp
</a>
</li>
<li class="file-stats">
<a href="#359dccbd5e329f4f4f3c88b6d43f0ad5dd435fe3" style="color: #1068bf;">
compiler/GHC/Cmm/ContFlowOpt.hs
</a>
</li>
<li class="file-stats">
<a href="#4fbb1c5f251c38fc01fcde693420ee6d02df7e45" style="color: #1068bf;">
compiler/GHC/Cmm/Dataflow/Label.hs
</a>
</li>
<li class="file-stats">
<a href="#2d3721ad8de95e1144493ca545db846672cb109f" style="color: #1068bf;">
compiler/GHC/Cmm/Info/Build.hs
</a>
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