[Git][ghc/ghc][wip/T20138] 71 commits: Allow CPR on unrestricted constructors

Sebastian Graf (@sgraf812) gitlab at gitlab.haskell.org
Tue Jun 13 14:36:54 UTC 2023



Sebastian Graf pushed to branch wip/T20138 at Glasgow Haskell Compiler / GHC


Commits:
981e5e11 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Allow CPR on unrestricted constructors

Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will allow CPR to handle `Ur`, in
particular.

- - - - -
bf9344d2 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Push coercions across multiplicity boundaries

Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will avoid preventing inlinings and
reductions and make linear programs more efficient.

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d56dd695 by sheaf at 2023-05-31T11:37:12-04:00
Data.Bag: add INLINEABLE to polymorphic functions

This commit allows polymorphic methods in GHC.Data.Bag to be
specialised, avoiding having to pass explicit dictionaries when they
are instantiated with e.g. a known monad.

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5366cd35 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcBinderStack into its own module

This commit splits off TcBinderStack into its own module,
to avoid module cycles: we might want to refer to it without also
pulling in the TcM monad.

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09d4d307 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcRef into its own module

This helps avoid pull in the full TcM monad when we just want access
to mutable references in the typechecker. This facilitates later patches
which introduce a slimmed down TcM monad for zonking.

- - - - -
88cc19b3 by sheaf at 2023-05-31T11:37:12-04:00
Introduce Codensity monad

The Codensity monad is useful to write state-passing computations in
continuation-passing style, e.g. to implement a State monad as
continuation-passing style over a Reader monad.

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f62d8195 by sheaf at 2023-05-31T11:37:12-04:00
Restructure the zonker

This commit splits up the zonker into a few separate components, described
in Note [The structure of the zonker] in `GHC.Tc.Zonk.Type`.

1. `GHC.Tc.Zonk.Monad` introduces a pared-down `TcM` monad, `ZonkM`,
     which has enough information for zonking types.
     This allows us to refactor `ErrCtxt` to use `ZonkM` instead of `TcM`,
     which guarantees we don't throw an error while reporting an error.

2. `GHC.Tc.Zonk.Env` is the new home of `ZonkEnv`, and also defines
    two zonking monad transformers, `ZonkT` and `ZonkBndrT`.
    `ZonkT` is a reader monad transformer over `ZonkEnv`.
    `ZonkBndrT m` is the codensity monad over `ZonkT m`.

     `ZonkBndrT` is used for computations that accumulate binders
     in the `ZonkEnv`.

3. `GHC.Tc.Zonk.TcType` contains the code for zonking types, for use
    in the typechecker. It uses the `ZonkM` monad.

4. `GHC.Tc.Zonk.Type` contains the code for final zonking to `Type`,
    which has been refactored to use `ZonkTcM = ZonkT TcM` and
    `ZonkBndrTcM = ZonkBndrT TcM`.

Allocations slightly decrease on the whole due to using
continuation-passing style instead of manual state passing of ZonkEnv
in the final zonking to Type.

-------------------------
Metric Decrease:
    T4029
    T8095
    T14766
    T15304
    hard_hole_fits
    RecordUpdPerf
Metric Increase:
    T10421
-------------------------

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70526f5b by mimi.vx at 2023-05-31T11:37:53-04:00
Update rdt-theme to latest upstream version

Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/23444

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f3556d6c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Restructure IPE buffer layout

Reference ticket #21766

This commit restructures IPE buffer list entries to not contain
references to their corresponding info tables. IPE buffer list nodes now
point to two lists of equal length, one holding the list of info table
pointers and one holding the corresponding entries for each info table.
This will allow the entry data to be compressed without losing the
references to the info tables.

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5d1f2411 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE compression to configure

Reference ticket #21766

Adds an `--enable-ipe-data-compreesion` flag to the configure script
which will check for libzstd and set the appropriate flags to allow for
IPE data compression in the compiler

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b7a640ac by Finley McIlwaine at 2023-06-01T04:53:12-04:00
IPE data compression

Reference ticket #21766

When IPE data compression is enabled, compress the emitted IPE buffer
entries and decompress them in the RTS.

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5aef5658 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix libzstd detection in configure and RTS

Ensure that `HAVE_LIBZSTD` gets defined to either 0 or 1 in all cases
and properly check that before IPE data decompression in the RTS. See
ticket #21766.

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69563c97 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add note describing IPE data compression

See ticket #21766

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7872e2b6 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix byte order of IPE data, fix IPE tests

Make sure byte order of written IPE buffer entries matches target.

Make sure the IPE-related tests properly access the fields of IPE buffer
entry nodes with the new IPE layout.

This commit also introduces checks to avoid importing modules if IPE
compression is not enabled.

See ticket #21766.

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0e85099b by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix IPE data decompression buffer allocation

Capacity of buffers allocated for decompressed IPE data was
incorrect due to a misuse of the `ZSTD_findFrameCompressedSize`
function. Fix by always storing decompressed size of IPE data in IPE
buffer list nodes and using `ZSTD_findFrameCompressedSize` to determine
the size of the compressed data.

See ticket #21766

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a0048866 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add optional dependencies to ./configure output

Changes the configure script to indicate whether libnuma, libzstd, or
libdw are being used as dependencies due to their optional features
being enabled.

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09d93bd0 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE-enabled builds to CI

- Adds an IPE job to the CI pipeline which is triggered by the ~IPE label
- Introduces CI logic to enable IPE data compression
- Enables uncompressed IPE data on debug CI job
- Regenerates jobs.yaml

MR https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/112 on the
images repository is meant to ensure that the proper images have
libzstd-dev installed.

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3ded9a1c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Update user's guide and release notes, small fixes

Add mention of IPE data compression to user's guide and the release
notes for 9.8.1. Also note the impact compression has on binary size in
both places.

Change IpeBufferListNode compression check so only the value `1`
indicates compression.

See ticket #21766

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41b41577 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Remove IPE enabled builds from CI

We don't need to explicitly specify the +ipe transformer to test IPE data
since there are tests which manually enable IPE information. This commit does
leave zstd IPE data compression enabled on the debian CI jobs.

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982bef3a by Krzysztof Gogolewski at 2023-06-01T04:53:49-04:00
Fix build with 9.2

GHC.Tc.Zonk.Type uses an equality constraint.
ghc.nix currently provides 9.2.

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1c96bc3d by Krzysztof Gogolewski at 2023-06-01T10:56:11-04:00
Output Lint errors to stderr instead of stdout

This is a continuation of 7b095b99, which fixed warnings but not errors.

Refs #13342

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8e81f140 by sheaf at 2023-06-01T10:56:51-04:00
Refactor lookupExactOrOrig & friends

This refactors the panoply of renamer lookup functions relating to
lookupExactOrOrig to more graciously handle Exact and Orig names.

In particular, we avoid the situation in which we would add Exact/Orig
GREs to the tcg_used_gres field, which could cause a panic in bestImport
like in #23240.

Fixes #23428

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5d415bfd by Krzysztof Gogolewski at 2023-06-01T10:57:31-04:00
Use the one-shot trick for UM and RewriteM functors

As described in Note [The one-shot state monad trick],
we shouldn't use derived Functor instances for monads using
one-shot. This was done for most of them, but UM and RewriteM
were missed.

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2c38551e by Krzysztof Gogolewski at 2023-06-01T10:58:08-04:00
Fix testsuite skipping Lint

setTestOpts() is used to modify the test options for an entire .T file,
rather than a single test.
If there was a test using collect_compiler_stats, all of the tests
in the same file had lint disabled.

Fixes #21247

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00a1e50b by Krzysztof Gogolewski at 2023-06-01T10:58:44-04:00
Add testcases for already fixed #16432

They were fixed by 40c7daed0.

Fixes #16432

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f6e060cc by Krzysztof Gogolewski at 2023-06-02T09:07:25-04:00
cleanup: Remove unused field from SelfBoot

It is no longer needed since Note [Extra dependencies from .hs-boot files]
was deleted in 6998772043.

I've also added tildes to Note headers, otherwise they're not detected
by the linter.

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82eacab6 by sheaf at 2023-06-02T09:08:01-04:00
Delete GHC.Tc.Utils.Zonk

This module was split up into GHC.Tc.Zonk.Type and GHC.Tc.Zonk.TcType
in commit f62d8195, but I forgot to delete the original module
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4a4eb761 by Ben Gamari at 2023-06-02T23:53:21-04:00
base: Add build-order import of GHC.Types in GHC.IO.Handle.Types

For reasons similar to those described in Note [Depend on
GHC.Num.Integer].

Fixes #23411.

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f53ac0ae by Sylvain Henry at 2023-06-02T23:54:01-04:00
JS: fix and enhance non-minimized code generation (#22455)

Flag -ddisable-js-minimizer was producing invalid code. Fix that and
also a few other things to generate nicer JS code for debugging.

The added test checks that we don't regress when using the flag.

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f7744e8e by Andrey Mokhov at 2023-06-03T16:49:44-04:00
[hadrian] Fix multiline synopsis rendering

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b2c745db by Bodigrim at 2023-06-03T16:50:23-04:00
Elaborate on performance properties of Data.List.++

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7cd8a61e by Matthew Pickering at 2023-06-05T11:46:23+01:00
Big TcLclEnv and CtLoc refactoring

The overall goal of this refactoring is to reduce the dependency
footprint of the parser and syntax tree. Good reasons include:

- Better module graph parallelisability
- Make it easier to migrate error messages without introducing module loops
- Philosophically, there's not reason for the AST to depend on half the
  compiler.

One of the key edges which added this dependency was

> GHC.Hs.Expr -> GHC.Tc.Types (TcLclEnv)

As this in turn depending on TcM which depends on HscEnv and so on.

Therefore the goal of this patch is to move `TcLclEnv` out of
`GHC.Tc.Types` so that `GHC.Hs.Expr` can import TcLclEnv without
incurring a huge dependency chain.

The changes in this patch are:

* Move TcLclEnv from GHC.Tc.Types to GHC.Tc.Types.LclEnv
* Create new smaller modules for the types used in TcLclEnv
  New Modules:
  - GHC.Tc.Types.ErrCtxt
  - GHC.Tc.Types.BasicTypes
  - GHC.Tc.Types.TH
  - GHC.Tc.Types.LclEnv
  - GHC.Tc.Types.CtLocEnv
  - GHC.Tc.Errors.Types.PromotionErr

  Removed Boot File:
  - {-# SOURCE #-} GHC.Tc.Types

* Introduce TcLclCtxt, the part of the TcLclEnv which doesn't
  participate in restoreLclEnv.

* Replace TcLclEnv in CtLoc with specific CtLocEnv which is defined in
  GHC.Tc.Types.CtLocEnv. Use CtLocEnv in Implic and CtLoc to record the
  location of the implication and constraint.

By splitting up TcLclEnv from GHC.Tc.Types we allow GHC.Hs.Expr to no
longer depend on the TcM monad and all that entails.

Fixes #23389 #23409

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3d8d39d1 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Utils.TcType on GHC.Driver.Session

This removes the usage of DynFlags from Tc.Utils.TcType  so that it no
longer depends on GHC.Driver.Session. In general we don't want anything
which is a dependency of Language.Haskell.Syntax to depend on
GHC.Driver.Session and removing this edge gets us closer to that goal.

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18db5ada by Matthew Pickering at 2023-06-05T11:46:23+01:00
Move isIrrefutableHsPat to GHC.Rename.Utils and rename to isIrrefutableHsPatRn

This removes edge from GHC.Hs.Pat to GHC.Driver.Session, which makes
Language.Haskell.Syntax end up depending on GHC.Driver.Session.

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12919dd5 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Types.Constraint on GHC.Driver.Session

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eb852371 by Matthew Pickering at 2023-06-05T11:46:24+01:00
hole fit plugins: Split definition into own module

The hole fit plugins are defined in terms of TcM, a type we want to
avoid depending on from `GHC.Tc.Errors.Types`. By moving it into its own
module we can remove this dependency. It also simplifies the necessary
boot file.

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9e5246d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Move GHC.Core.Opt.CallerCC Types into separate module

This allows `GHC.Driver.DynFlags` to depend on these types without
depending on CoreM and hence the entire simplifier pipeline.

We can also remove a hs-boot file with this change.

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52d6a7d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Remove unecessary SOURCE import

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698d160c by Matthew Pickering at 2023-06-05T11:46:24+01:00
testsuite: Accept new output for CountDepsAst and CountDepsParser tests

These are in a separate commit as the improvement to these tests is the
cumulative effect of the previous set of patches rather than just the
responsibility of the last one in the patchset.

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58ccf02e by sheaf at 2023-06-05T16:00:47-04:00
TTG: only allow VarBind at GhcTc

The VarBind constructor of HsBind is only used at the GhcTc stage.
This commit makes that explicit by setting the extension field of
VarBind to be DataConCantHappen at all other stages.

This allows us to delete a dead code path in GHC.HsToCore.Quote.rep_bind,
and remove some panics.

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54b83253 by Matthew Craven at 2023-06-06T12:59:25-04:00
Generate Addr# access ops programmatically

The existing utils/genprimopcode/gen_bytearray_ops.py was
relocated and extended for this purpose.  Additionally, hadrian
now knows about this script and uses it when generating primops.txt

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ecadbc7e by Matthew Pickering at 2023-06-06T13:00:01-04:00
ghcup-metadata: Only add Nightly tag when replacing LatestNightly

Previously we were always adding the Nightly tag, but this led to all
the previous builds getting an increasing number of nightly tags over
time. Now we just add it once, when we remove the LatestNightly tag.

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4aea0a72 by Vladislav Zavialov at 2023-06-07T12:06:46+02:00
Invisible binders in type declarations (#22560)

This patch implements @k-binders introduced in GHC Proposal #425
and guarded behind the TypeAbstractions extension:

	type D :: forall k j. k -> j -> Type
	data D @k @j a b = ...
	       ^^ ^^

To represent the new syntax, we modify LHsQTyVars as follows:

	-  hsq_explicit :: [LHsTyVarBndr () pass]
	+  hsq_explicit :: [LHsTyVarBndr (HsBndrVis pass) pass]

HsBndrVis is a new data type that records the distinction between
type variable binders written with and without the @ sign:

	data HsBndrVis pass
	  = HsBndrRequired
	  | HsBndrInvisible (LHsToken "@" pass)

The rest of the patch updates GHC, template-haskell, and haddock
to handle the new syntax.

Parser:
  The PsErrUnexpectedTypeAppInDecl error message is removed.
  The syntax it used to reject is now permitted.

Renamer:
  The @ sign does not affect the scope of a binder, so the changes to
  the renamer are minimal.  See rnLHsTyVarBndrVisFlag.

Type checker:
  There are three code paths that were updated to deal with the newly
  introduced invisible type variable binders:

    1. checking SAKS: see kcCheckDeclHeader_sig, matchUpSigWithDecl
    2. checking CUSK: see kcCheckDeclHeader_cusk
    3. inference: see kcInferDeclHeader, rejectInvisibleBinders

  Helper functions bindExplicitTKBndrs_Q_Skol and bindExplicitTKBndrs_Q_Tv
  are generalized to work with HsBndrVis.

Updates the haddock submodule.

Metric Increase:
    MultiLayerModulesTH_OneShot

Co-authored-by: Simon Peyton Jones <simon.peytonjones at gmail.com>

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b7600997 by Josh Meredith at 2023-06-07T13:10:21-04:00
JS: clean up FFI 'fat arrow' calls in base:System.Posix.Internals (#23481)

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e5d3940d by Sebastian Graf at 2023-06-07T18:01:28-04:00
Update CODEOWNERS
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960ef111 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Remove IPE enabled builds from CI"

This reverts commit 41b41577c8a28c236fa37e8f73aa1c6dc368d951.

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bad1c8cc by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Update user's guide and release notes, small fixes"

This reverts commit 3ded9a1cd22f9083f31bc2f37ee1b37f9d25dab7.

- - - - -
12726d90 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE-enabled builds to CI"

This reverts commit 09d93bd0305b0f73422ce7edb67168c71d32c15f.

- - - - -
dbdd989d by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add optional dependencies to ./configure output"

This reverts commit a00488665cd890a26a5564a64ba23ff12c9bec58.

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240483af by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix IPE data decompression buffer allocation"

This reverts commit 0e85099b9316ee24565084d5586bb7290669b43a.

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9b8c7dd8 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix byte order of IPE data, fix IPE tests"

This reverts commit 7872e2b6f08ea40d19a251c4822a384d0b397327.

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3364379b by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add note describing IPE data compression"

This reverts commit 69563c97396b8fde91678fae7d2feafb7ab9a8b0.

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fda30670 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix libzstd detection in configure and RTS"

This reverts commit 5aef5658ad5fb96bac7719710e0ea008bf7b62e0.

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1cbcda9a by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "IPE data compression"

This reverts commit b7a640acf7adc2880e5600d69bcf2918fee85553.

- - - - -
fb5e99aa by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE compression to configure"

This reverts commit 5d1f2411f4becea8650d12d168e989241edee186.

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2cdcb3a5 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Restructure IPE buffer layout"

This reverts commit f3556d6cefd3d923b36bfcda0c8185abb1d11a91.

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2b0c9f5e by Simon Peyton Jones at 2023-06-08T07:52:34+00:00
Don't report redundant Givens from quantified constraints

This fixes #23323

See (RC4) in Note [Tracking redundant constraints]

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567b32e1 by David Binder at 2023-06-08T18:41:29-04:00
Update the outdated instructions in HACKING.md on how to compile GHC

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2b1a4abe by Ryan Scott at 2023-06-09T07:56:58-04:00
Restore mingwex dependency on Windows

This partially reverts some of the changes in !9475 to make `base` and
`ghc-prim` depend on the `mingwex` library on Windows. It also restores the
RTS's stubs for `mingwex`-specific symbols such as `_lock_file`.

This is done because the C runtime provides `libmingwex` nowadays, and
moreoever, not linking against `mingwex` requires downstream users to link
against it explicitly in difficult-to-predict circumstances. Better to always
link against `mingwex` and prevent users from having to do the guesswork
themselves.

See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10360#note_495873 for
the discussion that led to this.

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28954758 by Ryan Scott at 2023-06-09T07:56:58-04:00
RtsSymbols.c: Remove mingwex symbol stubs

As of !9475, the RTS now links against `ucrt` instead of `msvcrt` on Windows,
which means that the RTS no longer needs to declare stubs for the `__mingw_*`
family of symbols. Let's remove these stubs to avoid confusion.

Fixes #23309.

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3ab0155b by Ryan Scott at 2023-06-09T07:57:35-04:00
Consistently use validity checks for TH conversion of data constructors

We were checking that TH-spliced data declarations do not look like this:

```hs
data D :: Type = MkD Int
```

But we were only doing so for `data` declarations' data constructors, not for
`newtype`s, `data instance`s, or `newtype instance`s. This patch factors out
the necessary validity checks into its own `cvtDataDefnCons` function and uses
it in all of the places where it needs to be.

Fixes #22559.

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a24b83dd by Matthew Pickering at 2023-06-09T15:19:00-04:00
Fix behaviour of -keep-tmp-files when used in OPTIONS_GHC pragma

This fixes the behaviour of -keep-tmp-files when used in an OPTIONS_GHC
pragma for files with module level scope.

Instead of simple not deleting the files, we also need to remove them
from the TmpFs so they are not deleted later on when all the other files
are deleted.

There are additional complications because you also need to remove the
directory where these files live from the TmpFs so we don't try to
delete those later either.

I added two tests.

1. Tests simply that -keep-tmp-files works at all with a single module
   and --make mode.
2. The other tests that temporary files are deleted for other modules
   which don't enable -keep-tmp-files.

Fixes #23339

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dcf32882 by Matthew Pickering at 2023-06-09T15:19:00-04:00
withDeferredDiagnostics: When debugIsOn, write landmine into IORef to catch use-after-free.

Ticket #23305 reports an error where we were attempting to use the
logger which was created by withDeferredDiagnostics after its scope had
ended.

This problem would have been caught by this patch and a validate build:

```
+*** Exception: Use after free
+CallStack (from HasCallStack):
+  error, called at compiler/GHC/Driver/Make.hs:<line>:<column> in <package-id>:GHC.Driver.Make
```

This general issue is tracked by #20981

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432c736c by Matthew Pickering at 2023-06-09T15:19:00-04:00
Don't return complete HscEnv from upsweep

By returning a complete HscEnv from upsweep the logger (as introduced by
withDeferredDiagnostics) was escaping the scope of
withDeferredDiagnostics and hence we were losing error messages.

This is reminiscent of #20981, which also talks about writing errors
into messages after their scope has ended.

See #23305 for details.

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26013cdc by Alexander McKenna at 2023-06-09T15:19:41-04:00
Dump `SpecConstr` specialisations separately

Introduce a `-ddump-spec-constr` flag which debugs specialisations from
`SpecConstr`. These are no longer shown when you use `-ddump-spec`.

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4639100b by Matthew Pickering at 2023-06-09T18:50:43-04:00
Add role annotations to SNat, SSymbol and SChar

Ticket #23454 explained it was possible to implement unsafeCoerce
because SNat was lacking a role annotation.

As these are supposed to be singleton types but backed by an efficient
representation the correct annotation is nominal to ensure these kinds
of coerces are forbidden.

These annotations were missed from https://github.com/haskell/core-libraries-committee/issues/85
which was implemented in 532de36870ed9e880d5f146a478453701e9db25d.

CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/170

Fixes #23454

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9c0dcff7 by Matthew Pickering at 2023-06-09T18:51:19-04:00
Remove non-existant bytearray-ops.txt.pp file from ghc.cabal.in

This broke the sdist generation.

Fixes #23489

- - - - -
273ff0c7 by David Binder at 2023-06-09T18:52:00-04:00
Regression test T13438 is no longer marked as "expect_broken" in the testsuite driver.

- - - - -
b84a2900 by Andrei Borzenkov at 2023-06-10T08:27:28-04:00
Fix -Wterm-variable-capture scope (#23434)

-Wterm-variable-capture wasn't accordant with type variable
scoping in associated types, in type classes. For example,
this code produced the warning:
  k = 12

  class C k a where
    type AT a :: k -> Type

I solved this issue by reusing machinery of newTyVarNameRn function
that is accordand with associated types: it does lookup for each free type
variable when we are in the type class context. And in this patch I
use result of this work to make sure that -Wterm-variable-capture warns
only on implicitly quantified type variables.

- - - - -
9d1a8d87 by Jorge Mendes at 2023-06-10T08:28:10-04:00
Remove redundant case statement in rts/js/mem.js.
- - - - -
46884ca9 by Sebastian Graf at 2023-06-13T16:35:16+02:00
Simplifier: Combine identical alts using local equalities and unfoldings (#20138)

See `Note [Combine identical alternatives: Unfoldings]` for details.

Fixes #20138.

- - - - -


30 changed files:

- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- CODEOWNERS
- HACKING.md
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/Types/Prim.hs
- − compiler/GHC/Builtin/bytearray-ops.txt.pp
- utils/genprimopcode/gen_bytearray_ops.py → compiler/GHC/Builtin/gen_bytearray_addr_access_ops.py
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CallerCC.hs
- − compiler/GHC/Core/Opt/CallerCC.hs-boot
- + compiler/GHC/Core/Opt/CallerCC/Types.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/Bag.hs
- compiler/GHC/Data/IOEnv.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b23123936ae3b935c2ae097ecabc79abe11153e4...46884ca936db7c308bea4bafe5ab3ba6ccd02ee9

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b23123936ae3b935c2ae097ecabc79abe11153e4...46884ca936db7c308bea4bafe5ab3ba6ccd02ee9
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