[Git][ghc/ghc][wip/T22404] 163 commits: Bump hsc2hs submodule

Simon Peyton Jones (@simonpj) gitlab at gitlab.haskell.org
Wed Feb 1 22:11:16 UTC 2023



Simon Peyton Jones pushed to branch wip/T22404 at Glasgow Haskell Compiler / GHC


Commits:
1142f858 by Cheng Shao at 2023-01-13T11:04:00+00:00
Bump hsc2hs submodule

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d4686729 by Cheng Shao at 2023-01-13T11:04:00+00:00
Bump process submodule

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84ae6573 by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: Bump DOCKER_REV

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d53598c5 by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: enable xz parallel compression for x64 jobs

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d31fcbca by Cheng Shao at 2023-01-13T11:06:58+00:00
ci: use in-image emsdk for js jobs

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93b9bbc1 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: improve nix-shell for gen_ci.hs and fix some ghc/hlint warnings

- Add a ghc environment including prebuilt dependencies to the
  nix-shell. Get rid of the ad hoc cabal cache and all dependencies
  are now downloaded from the nixos binary cache.
- Make gen_ci.hs a cabal package with HLS integration, to make future
  hacking of gen_ci.hs easier.
- Fix some ghc/hlint warnings after I got HLS to work.
- For the lint-ci-config job, do a shallow clone to save a few minutes
  of unnecessary git checkout time.

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8acc56c7 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: source the toolchain env file in wasm jobs

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87194df0 by Cheng Shao at 2023-01-13T11:47:17+00:00
ci: add wasm ci jobs via gen_ci.hs

- There is one regular wasm job run in validate pipelines
- Additionally, int-native/unreg wasm jobs run in nightly/release pipelines

Also, remove the legacy handwritten wasm ci jobs in .gitlab-ci.yml.

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b6eb9bcc by Matthew Pickering at 2023-01-13T11:52:16+00:00
wasm ci: Remove wasm release jobs

This removes the wasm release jobs, as we do not yet intend to
distribute these binaries.

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496607fd by Simon Peyton Jones at 2023-01-13T16:52:07-05:00
Add a missing checkEscapingKind

Ticket #22743 pointed out that there is a missing check,
for type-inferred bindings, that the inferred type doesn't
have an escaping kind.

The fix is easy.

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7a9a1042 by Andreas Klebinger at 2023-01-16T20:48:19-05:00
Separate core inlining logic from `Unfolding` type.

This seems like a good idea either way, but is mostly motivated by a
patch where this avoids a module loop.

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33b58f77 by sheaf at 2023-01-16T20:48:57-05:00
Hadrian: generalise &%> to avoid warnings

This patch introduces a more general version of &%> that works
with general traversable shapes, instead of lists. This allows us
to pass along the information that the length of the list of filepaths
passed to the function exactly matches the length of the input list
of filepath patterns, avoiding pattern match warnings.

Fixes #22430

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8c7a991c by Andreas Klebinger at 2023-01-16T20:49:34-05:00
Add regression test for #22611.

A case were a function used to fail to specialize, but now does.

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6abea760 by Andreas Klebinger at 2023-01-16T20:50:10-05:00
Mark maximumBy/minimumBy as INLINE.

The RHS was too large to inline which often prevented the overhead of the Maybe
from being optimized away. By marking it as INLINE we can eliminate the
overhead of both the maybe and are able to unpack the accumulator when
possible.

Fixes #22609

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99d151bb by Matthew Pickering at 2023-01-16T20:50:50-05:00
ci: Bump CACHE_REV so that ghc-9.6 branch and HEAD have different caches

Having the same CACHE_REV on both branches leads to issues where the
darwin toolchain is different on ghc-9.6 and HEAD which leads to long
darwin build times.

In general we should ensure that each branch has a different CACHE_REV.

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6a5845fb by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Change owner of files in source-tarball job

This fixes errors of the form:

```
fatal: detected dubious ownership in repository at '/builds/ghc/ghc'
To add an exception for this directory, call:
	git config --global --add safe.directory /builds/ghc/ghc
inferred 9.7.20230113
checking for GHC Git commit id... fatal: detected dubious ownership in repository at '/builds/ghc/ghc'
To add an exception for this directory, call:
	git config --global --add safe.directory /builds/ghc/ghc
```

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4afb952c by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Don't build aarch64-deb10-llvm job on release pipelines

Closes #22721

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8039feb9 by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Change owner of files in test-bootstrap job

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0b358d0c by Matthew Pickering at 2023-01-16T20:51:25-05:00
rel_eng: Add release engineering scripts into ghc tree

It is better to keep these scripts in the tree as they depend on the CI
configuration and so on. By keeping them in tree we can keep them
up-to-date as the CI config changes and also makes it easier to backport
changes to the release script between release branches in future.

The final motivation is that it makes generating GHCUp metadata
possible.

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28cb2ed0 by Matthew Pickering at 2023-01-16T20:51:25-05:00
ci: Don't use complicated image or clone in not-interruptible job

This job exists only for the meta-reason of not allowing nightly
pipelines to be cancelled. It was taking two minutes to run as in order
to run "true" we would also clone the whole GHC repo.

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eeea59bb by Matthew Pickering at 2023-01-16T20:51:26-05:00
Add scripts to generate ghcup metadata on nightly and release pipelines

1. A python script in .gitlab/rel_eng/mk-ghcup-metadata which generates
   suitable metadata for consumption by GHCUp for the relevant
   pipelines.

  - The script generates the metadata just as the ghcup maintainers
    want, without taking into account platform/library combinations. It
    is updated manually when the mapping changes.

  - The script downloads the bindists which ghcup wants to distribute,
    calculates the hash and generates the yaml in the correct structure.

  - The script is documented in the .gitlab/rel_eng/mk-ghcup-metadata/README.mk file

1a. The script requires us to understand the mapping from platform ->
    job. To choose the preferred bindist for each platform the
    .gitlab/gen_ci.hs script is modified to allow outputting a metadata
    file which answers the question about which job produces the
    bindist which we want to distribute to users for a specific
    platform.

2. Pipelines to run on nightly and release jobs to generate metadata

  - ghcup-metadata-nightly: Generates metadata which points directly to
    artifacts in the nightly job.

  - ghcup-metadata-release: Generates metadata suitable for inclusion
    directly in ghcup by pointing to the downloads folder where the
    bindist will be uploaded to.

2a. Trigger jobs which test the generated metadata in the downstream
    `ghccup-ci` repo. See that repo for documentation about what is
    tested and how but essentially we test in a variety of clean images
    that ghcup can download and install the bindists we say exist in our
    metadata.

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97bd4d8c by Bodigrim at 2023-01-16T20:52:04-05:00
Bump submodule parsec to 3.1.16.1

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97ac8230 by Alan Zimmerman at 2023-01-16T20:52:39-05:00
EPA: Add annotation for 'type' in DataDecl

Closes #22765

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dbbab95d by Ben Gamari at 2023-01-17T06:36:06-05:00
compiler: Small optimisation of assertM

In #22739 @AndreasK noticed that assertM performed the action to compute
the asserted predicate regardless of whether DEBUG is enabled. This is
inconsistent with the other assertion operations and general convention.
Fix this.

Closes #22739.

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fc02f3bb by Viktor Dukhovni at 2023-01-17T06:36:47-05:00
Avoid unnecessary printf warnings in EventLog.c

Fixes #22778

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003b6d44 by Simon Peyton Jones at 2023-01-17T16:33:05-05:00
Document the semantics of pattern bindings a bit better

This MR is in response to the discussion on #22719

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f4d50baf by Vladislav Zavialov at 2023-01-17T16:33:41-05:00
Hadrian: fix warnings (#22783)

This change fixes the following warnings when building Hadrian:

	src/Hadrian/Expression.hs:38:10: warning: [-Wredundant-constraints]
	src/Hadrian/Expression.hs:84:13: warning: [-Wtype-equality-requires-operators]
	src/Hadrian/Expression.hs:84:21: warning: [-Wtype-equality-requires-operators]
	src/Hadrian/Haskell/Cabal/Parse.hs:67:1: warning: [-Wunused-imports]

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06036d93 by Sylvain Henry at 2023-01-18T01:55:10-05:00
testsuite: req_smp --> req_target_smp, req_ghc_smp

See #22630 and !9552

This commit:
 - splits req_smp into req_target_smp and req_ghc_smp
 - changes the testsuite driver to calculate req_ghc_smp
 - changes a handful of tests to use req_target_smp instead of req_smp
 - changes a handful of tests to use req_host_smp when needed

The problem:
 - the problem this solves is the ambiguity surrounding req_smp
 - on master req_smp was used to express the constraint that the program
 being compiled supports smp _and_ that the host RTS (i.e., the RTS used
 to compile the program) supported smp. Normally that is fine, but in
 cross compilation this is not always the case as was discovered in #22630.

The solution:
 - Differentiate the two constraints:
   - use req_target_smp to say the RTS the compiled program is linked
   with (and the platform) supports smp
   - use req_host_smp to say the RTS the host is linked with supports smp

WIP: fix req_smp (target vs ghc)

add flag to separate bootstrapper

split req_smp -> req_target_smp and req_ghc_smp

update tests smp flags

cleanup and add some docstrings

only set ghc_with_smp to bootstrapper on S1 or CC

Only set ghc_with_smp to bootstrapperWithSMP of when testing stage 1
and cross compiling

test the RTS in config/ghc not hadrian

re-add ghc_with_smp

fix and align req names

fix T11760 to use req_host_smp

test the rts directly, avoid python 3.5 limitation

test the compiler in a try block

align out of tree and in tree withSMP flags

mark failing tests as host req smp

testsuite: req_host_smp --> req_ghc_smp

Fix ghc vs host, fix ghc_with_smp leftover

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ee9b78aa by Krzysztof Gogolewski at 2023-01-18T01:55:45-05:00
Use -Wdefault when running Python testdriver (#22727)

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e9c0537c by Vladislav Zavialov at 2023-01-18T01:56:22-05:00
Enable -Wstar-is-type by default (#22759)

Following the plan in GHC Proposal #143 "Remove the * kind syntax",
which states:

	In the next release (or 3 years in), enable -fwarn-star-is-type by default.

The "next release" happens to be 9.6.1

I also moved the T21583 test case from should_fail to should_compile,
because the only reason it was failing was -Werror=compat in our test
suite configuration.

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4efee43d by Ryan Scott at 2023-01-18T01:56:59-05:00
Add missing parenthesizeHsType in cvtSigTypeKind

We need to ensure that the output of `cvtSigTypeKind` is parenthesized (at
precedence `sigPrec`) so that any type signatures with an outermost, explicit
kind signature can parse correctly.

Fixes #22784.

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f891a442 by Ben Gamari at 2023-01-18T07:28:00-05:00
Bump ghc-tarballs to fix #22497

It turns out that gmp 6.2.1 uses the platform-reserved `x18` register on
AArch64/Darwin. This was fixed in upstream changeset 18164:5f32dbc41afc,
which was merged in 2020. Here I backport this patch although I do hope
that a new release is forthcoming soon.

Bumps gmp-tarballs submodule.

Fixes #22497.

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b13c6ea5 by Ben Gamari at 2023-01-18T07:28:00-05:00
Bump gmp-tarballs submodule

This backports the upstream fix for CVE-2021-43618, fixing #22789.

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c45a5fff by Cheng Shao at 2023-01-18T07:28:37-05:00
Fix typo in recent darwin tests fix

Corrects a typo in !9647. Otherwise T18623 will still fail on darwin
and stall other people's work.

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b4c14c4b by Luite Stegeman at 2023-01-18T14:21:42-05:00
Add PrimCallConv support to GHCi

This adds support for calling Cmm code from bytecode using the native
calling convention, allowing modules that use `foreign import prim`
to be loaded and debugged in GHCi.

This patch introduces a new `PRIMCALL` bytecode instruction and
a helper stack frame `stg_primcall`. The code is based on the
existing functionality for dealing with unboxed tuples in bytecode,
which has been generalised to handle arbitrary calls.

Fixes #22051

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d0a63ef8 by Adam Gundry at 2023-01-18T14:22:26-05:00
Refactor warning flag parsing to add missing flags

This adds `-Werror=<group>` and `-fwarn-<group>` flags for warning
groups as well as individual warnings. Previously these were defined
on an ad hoc basis so for example we had `-Werror=compat` but not
`-Werror=unused-binds`, whereas we had `-fwarn-unused-binds` but not
`-fwarn-compat`. Fixes #22182.

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7ed1b8ef by Adam Gundry at 2023-01-18T14:22:26-05:00
Minor corrections to comments

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5389681e by Adam Gundry at 2023-01-18T14:22:26-05:00
Revise warnings documentation in user's guide

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ab0d5cda by Adam Gundry at 2023-01-18T14:22:26-05:00
Move documentation of deferred type error flags out of warnings section

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eb5a6b91 by John Ericson at 2023-01-18T22:24:10-05:00
Give the RTS it's own configure script

Currently it doesn't do much anything, we are just trying to introduce
it without breaking the build. Later, we will move functionality from
the top-level configure script over to it.

We need to bump Cabal for https://github.com/haskell/cabal/pull/8649; to
facilitate and existing hack of skipping some configure checks for the
RTS we now need to skip just *part* not *all* of the "post configure"
hook, as running the configure script (which we definitely want to do)
is also implemented as part of the "post configure" hook. But doing this
requires exposing functionality that wasn't exposed before.

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32ab07bf by Bodigrim at 2023-01-18T22:24:51-05:00
ghc package does not have to depend on terminfo

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981ff7c4 by Bodigrim at 2023-01-18T22:24:51-05:00
ghc-pkg does not have to depend on terminfo

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f058e367 by Ben Gamari at 2023-01-18T22:25:27-05:00
nativeGen/X86: MFENCE is unnecessary for release semantics

In #22764 a user noticed that a program implementing a simple atomic
counter via an STRef regressed significantly due to the introduction of
necessary atomic operations in the MutVar# primops (#22468). This
regression was caused by a bug in the NCG, which emitted an unnecessary
MFENCE instruction for a release-ordered atomic write. MFENCE is rather
only needed to achieve sequentially consistent ordering.

Fixes #22764.

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154889db by Ryan Scott at 2023-01-18T22:26:03-05:00
Add regression test for #22151

Issue #22151 was coincidentally fixed in commit
aed1974e92366ab8e117734f308505684f70cddf (`Refactor the treatment of loopy
superclass dicts`). This adds a regression test to ensure that the issue
remains fixed.

Fixes #22151.

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14b5982a by Andrei Borzenkov at 2023-01-18T22:26:43-05:00
Fix printing of promoted MkSolo datacon (#22785)

Problem: In 2463df2f, the Solo data constructor was renamed to MkSolo,
and Solo was turned into a pattern synonym for backwards compatibility.
Since pattern synonyms can not be promoted, the old code that pretty-printed
promoted single-element tuples started producing ill-typed code:
   t :: Proxy ('Solo Int)
This fails with "Pattern synonym ‘Solo’ used as a type"

The solution is to track the distinction between type constructors and data
constructors more carefully when printing single-element tuples.

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1fe806d3 by Cheng Shao at 2023-01-23T04:48:47-05:00
hadrian: add hi_core flavour transformer

The hi_core flavour transformer enables -fwrite-if-simplified-core for
stage1 libraries, which emit core into interface files to make it
possible to restart code generation. Building boot libs with it makes
it easier to use GHC API to prototype experimental backends that needs
core/stg at link time.

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317cad26 by Cheng Shao at 2023-01-23T04:48:47-05:00
hadrian: add missing docs for recently added flavour transformers

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658f4446 by Ben Gamari at 2023-01-23T04:49:23-05:00
gitlab-ci: Add Rocky8 jobs

Addresses #22268.

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a83ec778 by Vladislav Zavialov at 2023-01-23T04:49:58-05:00
Set "since: 9.8" for TypeAbstractions and -Wterm-variable-capture

These flags did not make it into the 9.6 release series,
so the "since" annotations must be corrected.

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fec7c2ea by Alan Zimmerman at 2023-01-23T04:50:33-05:00
EPA: Add SourceText to HsOverLabel

To be able to capture string literals with possible escape codes as labels.

Close #22771

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3efd1e99 by Ben Gamari at 2023-01-23T04:51:08-05:00
template-haskell: Bump version to 2.20.0.0

Updates `text` and `exceptions` submodules for bounds bumps.

Addresses #22767.

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0900b584 by Cheng Shao at 2023-01-23T04:51:45-05:00
hadrian: disable alloca for in-tree GMP on wasm32

When building in-tree GMP for wasm32, disable its alloca usage, since
it may potentially cause stack overflow (e.g. #22602).

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db0f1bfd by Cheng Shao at 2023-01-23T04:52:21-05:00
Bump process submodule

Includes a critical fix for wasm32, see
https://github.com/haskell/process/pull/272 for details. Also changes
the existing cross test to include process stuff and avoid future
regression here.

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9222b167 by Matthew Pickering at 2023-01-23T04:52:57-05:00
ghcup metadata: Fix subdir for windows bindist

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9a9bec57 by Matthew Pickering at 2023-01-23T04:52:57-05:00
ghcup metadata: Remove viPostRemove field from generated metadata

This has been removed from the downstream metadata.

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82884ce0 by Simon Peyton Jones at 2023-01-23T04:53:32-05:00
Fix #22742

runtimeRepLevity_maybe was panicing unnecessarily; and
the error printing code made use of the case when it should
return Nothing rather than panicing.

For some bizarre reason perf/compiler/T21839r shows a 10% bump in runtime
peak-megagbytes-used, on a single architecture (alpine). See !9753 for
commentary, but I'm going to accept it.

Metric Increase:
    T21839r

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2c6deb18 by Bryan Richter at 2023-01-23T14:12:22+02:00
codeowners: Add Ben, Matt, and Bryan to CI

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eee3bf05 by Matthew Craven at 2023-01-23T21:46:41-05:00
Do not collect compile-time metrics for T21839r

...the testsuite doesn't handle this properly since it
also collects run-time metrics.  Compile-time metrics
for this test are already tracked via T21839c.

Metric Decrease:
    T21839r

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1d1dd3fb by Matthew Pickering at 2023-01-24T05:37:52-05:00
Fix recompilation checking for multiple home units

The key part of this change is to store a UnitId in the
`UsageHomeModule` and `UsageHomeModuleInterface`.

* Fine-grained dependency tracking is used if the dependency comes from
  any home unit.
* We actually look up the right module when checking whether we need to
  recompile in the `UsageHomeModuleInterface` case.

These scenarios are both checked by the new tests (
multipleHomeUnits_recomp and multipleHomeUnits_recomp_th )

Fixes #22675

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7bfb30f9 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Augment target filepath by working directory when checking if module satisfies target

This fixes a spurious warning in -Wmissing-home-modules.

This is a simple oversight where when looking for the target in the
first place we augment the search by the -working-directory flag but
then fail to do so when checking this warning.

Fixes #22676

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69500dd4 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Use NodeKey rather than ModuleName in pruneCache

The `pruneCache` function assumes that the list of `CachedInfo` all have unique `ModuleName`, this is not true:

* In normal compilation, the same module name can appear for a file and it's boot file.
* In multiple home unit compilation the same ModuleName can appear in different units

The fix is to use a `NodeKey` as the actual key for the interfaces which includes `ModuleName`, `IsBoot` and `UnitId`.

Fixes #22677

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336b2b1c by Matthew Pickering at 2023-01-24T05:37:52-05:00
Recompilation checking: Don't try to find artefacts for Interactive & hs-boot combo

In interactive mode we don't produce any linkables for hs-boot files. So
we also need to not going looking for them when we check to see if we
have all the right objects needed for recompilation.

Ticket #22669

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6469fea7 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Don't write o-boot files in Interactive mode

We should not be producing object files when in interactive mode but we
still produced the dummy o-boot files. These never made it into a
`Linkable` but then confused the recompilation checker.

Fixes #22669

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06cc0a95 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Improve driver diagnostic messages by including UnitId in message

Currently the driver diagnostics don't give any indication about which unit they correspond to.

For example `-Wmissing-home-modules` can fire multiple times for each different home unit and gives no indication about which unit it's actually reporting about.

Perhaps a longer term fix is to generalise the providence information away from a SrcSpan so that these kind of whole project errors can be reported with an accurate provenance. For now we can just include the `UnitId` in the error message.

Fixes #22678

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4fe9eaff by Matthew Pickering at 2023-01-24T05:37:52-05:00
Key ModSummary cache by UnitId as well as FilePath

Multiple units can refer to the same files without any problem. Just
another assumption which needs to be updated when we may have multiple
home units.

However, there is the invariant that within each unit each file only
maps to one module, so as long as we also key the cache by UnitId then
we are all good.

This led to some confusing behaviour in GHCi when reloading,
multipleHomeUnits_shared distils the essence of what can go wrong.

Fixes #22679

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ada29f5c by Matthew Pickering at 2023-01-24T05:37:52-05:00
Finder: Look in current unit before looking in any home package dependencies

In order to preserve existing behaviour it's important to look within the current component before consideirng a module might come from an external component.

This already happened by accident in `downsweep`, (because roots are used to repopulated the cache) but in the `Finder` the logic was the wrong way around.

Fixes #22680

-------------------------
Metric Decrease:
    MultiComponentModules
    MultiComponentModulesRecomp
-------------------------p

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be701cc6 by Matthew Pickering at 2023-01-24T05:37:52-05:00
Debug: Print full NodeKey when pretty printing ModuleGraphNode

This is helpful when debugging multiple component issues.

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34d2d463 by Krzysztof Gogolewski at 2023-01-24T05:38:32-05:00
Fix Lint check for duplicate external names

Lint was checking for duplicate external names by calling removeDups,
which needs a comparison function that is passed to Data.List.sortBy.
But the comparison was not a valid ordering - it returned LT
if one of the names was not external.
For example, the previous implementation won't find a duplicate in
[M.x, y, M.x].
Instead, we filter out non-external names before looking for duplicates.

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1c050ed2 by Matthew Pickering at 2023-01-24T05:39:08-05:00
Add test for T22671

This was fixed by b13c6ea5

Closes #22671

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05e6a2d9 by Tom Ellis at 2023-01-24T12:10:52-05:00
Clarify where `f` is defined

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d151546e by Cheng Shao at 2023-01-24T12:11:29-05:00
CmmToC: fix CmmRegOff for 64-bit register on a 32-bit target

We used to print the offset value to a platform word sized integer.
This is incorrect when the offset is negative (e.g. output of cmm
constant folding) and the register is 64-bit but on a 32-bit target,
and may lead to incorrect runtime result (e.g. #22607).

The fix is simple: just treat it as a proper MO_Add, with the correct
width info inferred from the register itself.

Metric Increase:
    T12707
    T13379
    T4801
    T5321FD
    T5321Fun

- - - - -
e5383a29 by Wander Hillen at 2023-01-24T20:02:26-05:00
Allow waiting for timerfd to be interrupted during rts shutdown

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1957eda1 by Ryan Scott at 2023-01-24T20:03:01-05:00
Restore Compose's Read/Show behavior to match Read1/Show1 instances

Fixes #22816.

- - - - -
30972827 by Matthew Pickering at 2023-01-25T03:54:14-05:00
docs: Update INSTALL.md

Removes references to make.

Fixes #22480

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bc038c3b by Cheng Shao at 2023-01-25T03:54:50-05:00
compiler: fix handling of MO_F_Neg in wasm NCG

In the wasm NCG, we used to compile MO_F_Neg to 0.0-x. It was an
oversight, there actually exists f32.neg/f64.neg opcodes in the wasm
spec and those should be used instead! The old behavior almost works,
expect when GHC compiles the -0.0 literal, which will incorrectly
become 0.0.

- - - - -
e987e345 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Hadrian: correctly detect AR at-file support

Stage0's ar may not support at-files. Take it into account.

Found while cross-compiling from Darwin to Windows.

- - - - -
48131ee2 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Hadrian: fix Windows cross-compilation

Decision to build either unix or Win32 package must be stage specific
for cross-compilation to be supported.

- - - - -
288fa017 by Sylvain Henry at 2023-01-25T14:47:41-05:00
Fix RTS build on Windows

This change fixes a cross-compilation issue from ArchLinux to Windows
because these symbols weren't found.

- - - - -
2fdf22ae by Sylvain Henry at 2023-01-25T14:47:41-05:00
configure: support "windows" as an OS

- - - - -
13a0566b by Simon Peyton Jones at 2023-01-25T14:48:16-05:00
Fix in-scope set in specImports

Nothing deep here; I had failed to bring some
floated dictionary binders into scope.

Exposed by -fspecialise-aggressively

Fixes #22715.

- - - - -
b7efdb24 by Matthew Pickering at 2023-01-25T14:48:51-05:00
ci: Disable HLint job due to excessive runtime

The HLint jobs takes much longer to run (20 minutes) after "Give the RTS it's own configure script" eb5a6b91

Now the CI job will build the stage0 compiler before it generates the necessary RTS headers.

We either need to:

* Fix the linting rules so they take much less time
* Revert the commit
* Remove the linting of base from the hlint job
* Remove the hlint job

This is highest priority as it is affecting all CI pipelines.

For now I am just disabling the job because there are many more pressing
matters at hand.

Ticket #22830

- - - - -
1bd32a35 by Sylvain Henry at 2023-01-26T12:34:21-05:00
Factorize hptModulesBelow

Create and use moduleGraphModulesBelow in GHC.Unit.Module.Graph that
doesn't need anything from the driver to be used.

- - - - -
1262d3f8 by Matthew Pickering at 2023-01-26T12:34:56-05:00
Store dehydrated data structures in CgModBreaks

This fixes a tricky leak in GHCi where we were retaining old copies of
HscEnvs when reloading. If not all modules were recompiled then these
hydrated fields in break points would retain a reference to the old
HscEnv which could double memory usage.

Fixes #22530

- - - - -
e27eb80c by Matthew Pickering at 2023-01-26T12:34:56-05:00
Force more in NFData Name instance

Doesn't force the lazy `OccName` field (#19619) which is already known
as a really bad source of leaks.

When we slam the hammer storing Names on disk (in interface files or the
like), all this should be forced as otherwise a `Name` can easily retain
an `Id` and hence the entire world.

Fixes #22833

- - - - -
3d004d5a by Matthew Pickering at 2023-01-26T12:34:56-05:00
Force OccName in tidyTopName

This occname has just been derived from an `Id`, so need to force it
promptly so we can release the Id back to the world.

Another symptom of the bug caused by #19619

- - - - -
f2a0fea0 by Matthew Pickering at 2023-01-26T12:34:56-05:00
Strict fields in ModNodeKey (otherwise retains HomeModInfo)

Towards #22530

- - - - -
5640cb1d by Sylvain Henry at 2023-01-26T12:35:36-05:00
Hadrian: fix doc generation

Was missing dependencies on files generated by templates (e.g.
ghc.cabal)

- - - - -
3e827c3f by Richard Eisenberg at 2023-01-26T20:06:53-05:00
Do newtype unwrapping in the canonicaliser and rewriter

See Note [Unwrap newtypes first], which has the details.

Close #22519.

- - - - -
b3ef5c89 by doyougnu at 2023-01-26T20:07:48-05:00
tryFillBuffer: strictify

more speculative bangs

- - - - -
d0d7ba0f by Vladislav Zavialov at 2023-01-26T20:08:25-05:00
base: NoImplicitPrelude in Data.Void and Data.Kind

This change removes an unnecessary dependency on Prelude
from two modules in the base package.

- - - - -
fa1db923 by Matthew Pickering at 2023-01-26T20:09:00-05:00
ci: Add ubuntu18_04 nightly and release jobs

This adds release jobs for ubuntu18_04 which uses glibc 2.27 which is
older than the 2.28 which is used by Rocky8 bindists.

Ticket #22268

- - - - -
807310a1 by Matthew Pickering at 2023-01-26T20:09:00-05:00
rel-eng: Add missing rocky8 bindist

We intend to release rocky8 bindist so the fetching script needs to know
about them.

- - - - -
c7116b10 by Ben Gamari at 2023-01-26T20:09:35-05:00
base: Make changelog proposal references more consistent

Addresses #22773.

- - - - -
6932cfc7 by Sylvain Henry at 2023-01-26T20:10:27-05:00
Fix spurious change from !9568

- - - - -
e480fbc2 by Ben Gamari at 2023-01-27T05:01:24-05:00
rts: Use C11-compliant static assertion syntax

Previously we used `static_assert` which is only available in C23. By
contrast, C11 only provides `_Static_assert`.

Fixes #22777

- - - - -
2648c09c by Andrei Borzenkov at 2023-01-27T05:02:07-05:00
Replace errors from badOrigBinding with new one (#22839)

Problem: in 02279a9c the type-level [] syntax was changed from a built-in name
to an alias for the GHC.Types.List constructor. badOrigBinding assumes that if
a name is not built-in then it must have come from TH quotation, but this is
not necessarily the case with [].

The outdated assumption in badOrigBinding leads to incorrect error messages.
This code:
  data []
Fails with "Cannot redefine a Name retrieved by a Template Haskell quote: []"

Unfortunately, there is not enough information in RdrName to directly determine
if the name was constructed via TH or by the parser, so this patch changes the
error message instead.

It unifies TcRnIllegalBindingOfBuiltIn and TcRnNameByTemplateHaskellQuote
into a new error TcRnBindingOfExistingName and changes its wording to avoid
guessing the origin of the name.

- - - - -
545bf8cf by Matthew Pickering at 2023-01-27T14:58:53+00:00
Revert "base: NoImplicitPrelude in Data.Void and Data.Kind"

Fixes CI errors of the form.

```
===> Command failed with error code: 1
ghc: panic! (the 'impossible' happened)
  GHC version 9.7.20230127:
	lookupGlobal
  Failed to load interface for ‘GHC.Num.BigNat’
  There are files missing in the ‘ghc-bignum’ package,
  try running 'ghc-pkg check'.
  Use -v (or `:set -v` in ghci) to see a list of the files searched for.
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/GHC/Utils/Panic.hs:189:37 in ghc:GHC.Utils.Panic
        pprPanic, called at compiler/GHC/Tc/Utils/Env.hs:154:32 in ghc:GHC.Tc.Utils.Env
  CallStack (from HasCallStack):
    panic, called at compiler/GHC/Utils/Error.hs:454:29 in ghc:GHC.Utils.Error
Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug
```

This reverts commit d0d7ba0fb053ebe7f919a5932066fbc776301ccd.

The module now lacks a dependency on GHC.Num.BigNat which it implicitly
depends on. It is causing all CI jobs to fail so we revert without haste
whilst the patch can be fixed.

Fixes #22848

- - - - -
638277ba by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Detect family instance orphans correctly

We were treating a type-family instance as a non-orphan if there
was a type constructor on its /right-hand side/ that was local. Boo!
Utterly wrong. With this patch, we correctly check the /left-hand side/
instead!

Fixes #22717

- - - - -
46a53bb2 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Report family instance orphans correctly

This fixes the fact that we were not reporting orphan family instances
at all. The fix here is easy, but touches a bit of code. I refactored
the code to be much more similar to the way that class instances are done:

   - Add a fi_orphan field to FamInst, like the is_orphan field in ClsInst
   - Make newFamInst initialise this field, just like newClsInst
   - And make newFamInst report a warning for an orphan, just like newClsInst
   - I moved newFamInst from GHC.Tc.Instance.Family to GHC.Tc.Utils.Instantiate,
     just like newClsInst.
   - I added mkLocalFamInst to FamInstEnv, just like mkLocalClsInst in InstEnv
   - TcRnOrphanInstance and SuggestFixOrphanInstance are now parametrised
     over class instances vs type/data family instances.

Fixes #19773

- - - - -
faa300fb by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Avoid orphans in STG

This patch removes some orphan instances in the STG namespace
by introducing the GHC.Stg.Lift.Types module, which allows various
type family instances to be moved to GHC.Stg.Syntax, avoiding orphan
instances.

- - - - -
0f25a13b by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Avoid orphans in the parser

This moves Anno instances for PatBuilder from GHC.Parser.PostProcess
to GHC.Parser.Types to avoid orphans.

- - - - -
15750d33 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00
Accept an orphan declaration (sadly)

This accepts the orphan type family instance

  type instance DsForeignHook = ...

in GHC.HsToCore.Types.

See Note [The Decoupling Abstract Data Hack] in GHC.Driver.Hooks

- - - - -
c9967d13 by Zubin Duggal at 2023-01-27T23:55:31-05:00
bindist configure: Fail if find not found (#22691)

- - - - -
ad8cfed4 by John Ericson at 2023-01-27T23:56:06-05:00
Put hadrian bootstrap plans through `jq`

This makes it possible to review changes with conventional diffing
tools.

- - - - -
d0ddc01b by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Introduce threaded2_sanity way

Incredibly, we previously did not have a single way which would test the
threaded RTS with multiple capabilities and the sanity-checker enabled.

- - - - -
38ad8351 by Ben Gamari at 2023-01-27T23:56:42-05:00
rts: Relax Messages assertion

`doneWithMsgThrowTo` was previously too strict in asserting that the
`Message` is locked. Specifically, it failed to consider that the
`Message` may not be locked if we are deleting all threads during RTS
shutdown.

- - - - -
a9fe81af by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Fix race in UnliftedTVar2

Previously UnliftedTVar2 would fail when run with multiple capabilities
(and possibly even with one capability) as it would assume that
`killThread#` would immediately kill the "increment" thread.

Also, refactor the the executable to now succeed with no output and
fails with an exit code.

- - - - -
8519af60 by Ben Gamari at 2023-01-27T23:56:42-05:00
testsuite: Make listThreads more robust

Previously it was sensitive to the labels of threads which it did not
create (e.g. the IO manager event loop threads). Fix this.

- - - - -
55a81995 by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix non-atomic mutation of enabled_capabilities

- - - - -
b5c75f1d by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix C++ compilation issues

Make the RTS compilable with a C++ compiler by inserting necessary
casts.

- - - - -
c261b62f by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Fix typo

"tracingAddCapabilities" was mis-named

- - - - -
77fdbd3f by Ben Gamari at 2023-01-27T23:56:43-05:00
rts: Drop long-dead fallback definitions for INFINITY & NAN

These are no longer necessary since we now compile as C99.

- - - - -
56c1bd98 by Ben Gamari at 2023-01-28T02:57:59-05:00
Revert "CApiFFI: add ConstPtr for encoding const-qualified pointer return types (#22043)"

This reverts commit 99aca26b652603bc62953157a48e419f737d352d.

- - - - -
b3a3534b by nineonine at 2023-01-28T02:57:59-05:00
CApiFFI: add ConstPtr for encoding const-qualified pointer return types

Previously, when using `capi` calling convention in foreign declarations,
code generator failed to handle const-cualified pointer return types.
This resulted in CC toolchain throwing `-Wincompatible-pointer-types-discards-qualifiers`
warning.

`Foreign.C.Types.ConstPtr` newtype was introduced to handle these cases -
special treatment was put in place to generate appropritetly qualified C
wrapper that no longer triggers the above mentioned warning.

Fixes #22043.

- - - - -
082b7d43 by Oleg Grenrus at 2023-01-28T02:58:38-05:00
Add Foldable1 Solo instance

- - - - -
50b1e2e8 by Andrei Borzenkov at 2023-01-28T02:59:18-05:00
Convert diagnostics in GHC.Rename.Bind to proper TcRnMessage (#20115)

I removed all occurrences of TcRnUnknownMessage in GHC.Rename.Bind
module. Instead, these TcRnMessage messages were introduced:
  TcRnMultipleFixityDecls
  TcRnIllegalPatternSynonymDecl
  TcRnIllegalClassBiding
  TcRnOrphanCompletePragma
  TcRnEmptyCase
  TcRnNonStdGuards
  TcRnDuplicateSigDecl
  TcRnMisplacedSigDecl
  TcRnUnexpectedDefaultSig
  TcRnBindInBootFile
  TcRnDuplicateMinimalSig

- - - - -
3330b819 by Matthew Pickering at 2023-01-28T02:59:54-05:00
hadrian: Fix library-dirs, dynamic-library-dirs and static-library-dirs in inplace .conf files

Previously we were just throwing away the contents of the library-dirs
fields but really we have to do the same thing as for include-dirs,
relativise the paths into the current working directory and maintain any
extra libraries the user has specified.

Now the relevant section of the rts.conf file looks like:

```
library-dirs:
    ${pkgroot}/../rts/build
    ${pkgroot}/../../..//_build/stage1/rts/build
    /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
    /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib

library-dirs-static:
    ${pkgroot}/../rts/build
    ${pkgroot}/../../..//_build/stage1/rts/build
    /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
    /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib

dynamic-library-dirs:
    ${pkgroot}/../rts/build
    ${pkgroot}/../../..//_build/stage1/rts/build
    /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib
    /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib
```

Fixes #22209

- - - - -
c9ad8852 by Bodigrim at 2023-01-28T03:00:33-05:00
Document differences between Data.{Monoid,Semigroup}.{First,Last}

- - - - -
7e11c6dc by Cheng Shao at 2023-01-28T03:01:09-05:00
compiler: fix subword literal narrowing logic in the wasm NCG

This patch fixes the W8/W16 literal narrowing logic in the wasm NCG,
which used to lower it to something like i32.const -1, without
properly zeroing-out the unused higher bits. Fixes #22608.

- - - - -
6ea2aa02 by Cheng Shao at 2023-01-28T03:01:46-05:00
compiler: fix lowering of CmmBlock in the wasm NCG

The CmmBlock datacon was not handled in lower_CmmLit, since I thought
it would have been eliminated after proc-point splitting. Turns out it
still occurs in very rare occasions, and this patch is needed to fix
T9329 for wasm.

- - - - -
2b62739d by Bodigrim at 2023-01-28T17:16:11-05:00
Assorted changes to avoid Data.List.{head,tail}

- - - - -
78c07219 by Cheng Shao at 2023-01-28T17:16:48-05:00
compiler: properly handle ForeignHints in the wasm NCG

Properly handle ForeignHints of ccall arguments/return value, insert
sign extends and truncations when handling signed subwords. Fixes #22852.

- - - - -
8bed166b by Ben Gamari at 2023-01-30T05:06:26-05:00
nativeGen: Disable asm-shortcutting on Darwin

Asm-shortcutting may produce relative references to symbols defined in
other compilation units. This is not something that MachO relocations
support (see #21972). For this reason we disable the optimisation on
Darwin. We do so without a warning since this flag is enabled by `-O2`.

Another way to address this issue would be to rather implement a
PLT-relocatable jump-table strategy. However, this would only benefit
Darwin and does not seem worth the effort.

Closes #21972.

- - - - -
da468391 by Cheng Shao at 2023-01-30T05:07:03-05:00
compiler: fix data section alignment in the wasm NCG

Previously we tried to lower the alignment requirement as far as
possible, based on the section kind inferred from the CLabel. For info
tables, .p2align 1 was applied given the GC should only need the
lowest bit to tag forwarding pointers. But this would lead to
unaligned loads/stores, which has a performance penalty even if the
wasm spec permits it. Furthermore, the test suite has shown memory
corruption in a few cases when compacting gc is used.

This patch takes a more conservative approach: all data sections
except C strings align to word size.

- - - - -
08ba8720 by Andreas Klebinger at 2023-01-30T21:18:45-05:00
ghc-the-library: Retain cafs in both static in dynamic builds.

We use keepCAFsForGHCi.c to force -fkeep-cafs behaviour by using a
__attribute__((constructor)) function.

This broke for static builds where the linker discarded the object file
since it was not reverenced from any exported code. We fix this by
asserting that the flag is enabled using a function in the same module
as the constructor. Which causes the object file to be retained by the
linker, which in turn causes the constructor the be run in static builds.

This changes nothing for dynamic builds using the ghc library. But causes
static to also retain CAFs (as we expect them to).

Fixes #22417.

-------------------------
Metric Decrease:
    T21839r
-------------------------

- - - - -
20598ef6 by Ryan Scott at 2023-01-30T21:19:20-05:00
Handle `type data` properly in tyThingParent_maybe

Unlike most other data constructors, data constructors declared with `type data`
are represented in `TyThing`s as `ATyCon` rather than `ADataCon`. The `ATyCon`
case in `tyThingParent_maybe` previously did not consider the possibility of
the underlying `TyCon` being a promoted data constructor, which led to the
oddities observed in #22817. This patch adds a dedicated special case in
`tyThingParent_maybe`'s `ATyCon` case for `type data` data constructors to fix
these oddities.

Fixes #22817.

- - - - -
2f145052 by Ryan Scott at 2023-01-30T21:19:56-05:00
Fix two bugs in TypeData TH reification

This patch fixes two issues in the way that `type data` declarations were
reified with Template Haskell:

* `type data` data constructors are now properly reified using `DataConI`.
  This is accomplished with a special case in `reifyTyCon`. Fixes #22818.

* `type data` type constructors are now reified in `reifyTyCon` using
  `TypeDataD` instead of `DataD`. Fixes #22819.

- - - - -
d0f34f25 by Simon Peyton Jones at 2023-01-30T21:20:35-05:00
Take account of loop breakers in specLookupRule

The key change is that in GHC.Core.Opt.Specialise.specLookupRule
we were using realIdUnfolding, which ignores the loop-breaker
flag.  When given a loop breaker, rule matching therefore
looped infinitely -- #22802.

In fixing this I refactored a bit.

* Define GHC.Core.InScopeEnv as a data type, and use it.
  (Previously it was a pair: hard to grep for.)

* Put several functions returning an IdUnfoldingFun into
  GHC.Types.Id, namely
     idUnfolding
     alwaysActiveUnfoldingFun,
     whenActiveUnfoldingFun,
     noUnfoldingFun
  and use them.  (The are all loop-breaker aware.)

- - - - -
de963cb6 by Matthew Pickering at 2023-01-30T21:21:11-05:00
ci: Remove FreeBSD job from release pipelines

We no longer attempt to build or distribute this release

- - - - -
f26d27ec by Matthew Pickering at 2023-01-30T21:21:11-05:00
rel_eng: Add check to make sure that release jobs are downloaded by fetch-gitlab

This check makes sure that if a job is a prefixed by "release-" then the
script downloads it and understands how to map the job name to the
platform.

- - - - -
7619c0b4 by Matthew Pickering at 2023-01-30T21:21:11-05:00
rel_eng: Fix the name of the ubuntu-* jobs

These were not uploaded for alpha1

Fixes #22844

- - - - -
68eb8877 by Matthew Pickering at 2023-01-30T21:21:11-05:00
gen_ci: Only consider release jobs for job metadata

In particular we do not have a release job for FreeBSD so the generation
of the platform mapping was failing.

- - - - -
b69461a0 by Jason Shipman at 2023-01-30T21:21:50-05:00
User's guide: Clarify overlapping instance candidate elimination

This commit updates the user's guide section on overlapping instance candidate
elimination to use "or" verbiage instead of "either/or" in regards to the
current pair of candidates' being overlappable or overlapping. "Either IX is
overlappable, or IY is overlapping" can cause confusion as it suggests "Either
IX is overlappable, or IY is overlapping, but not both".

This was initially discussed on this Discourse topic:

https://discourse.haskell.org/t/clarification-on-overlapping-instance-candidate-elimination/5677

- - - - -
7cbdaad0 by Matthew Pickering at 2023-01-31T07:53:53-05:00
Fixes for cabal-reinstall CI job

* Allow filepath to be reinstalled
* Bump some version bounds to allow newer versions of libraries
* Rework testing logic to avoid "install --lib" and package env files

Fixes #22344

- - - - -
fd8f32bf by Cheng Shao at 2023-01-31T07:54:29-05:00
rts: prevent potential divide-by-zero when tickInterval=0

This patch fixes a few places in RtsFlags.c that may result in
divide-by-zero error when tickInterval=0, which is the default on
wasm. Fixes #22603.

- - - - -
085a6db6 by Joachim Breitner at 2023-01-31T07:55:05-05:00
Update note at beginning of GHC.Builtin.NAmes

some things have been renamed since it was written, it seems.

- - - - -
7716cbe6 by Cheng Shao at 2023-01-31T07:55:41-05:00
testsuite: use tgamma for cg007

gamma is a glibc-only deprecated function, use tgamma instead. It's
required for fixing cg007 when testing the wasm unregisterised
codegen.

- - - - -
19c1fbcd by doyougnu at 2023-01-31T13:08:03-05:00
InfoTableProv: ShortText --> ShortByteString

- - - - -
765fab98 by doyougnu at 2023-01-31T13:08:03-05:00
FastString: add fastStringToShorText

- - - - -
a83c810d by Simon Peyton Jones at 2023-01-31T13:08:38-05:00
Improve exprOkForSpeculation for classops

This patch fixes #22745 and #15205, which are about GHC's
failure to discard unnecessary superclass selections that
yield coercions.  See
  GHC.Core.Utils Note [exprOkForSpeculation and type classes]

The main changes are:

* Write new Note [NON-BOTTOM_DICTS invariant] in GHC.Core, and
  refer to it

* Define new function isTerminatingType, to identify those
  guaranteed-terminating dictionary types.

* exprOkForSpeculation has a new (very simple) case for ClassOpId

* ClassOpId has a new field that says if the return type is
  an unlifted type, or a terminating type.

This was surprisingly tricky to get right.  In particular note
that unlifted types are not terminating types; you can write an
expression of unlifted type, that diverges.  Not so for dictionaries
(or, more precisely, for the dictionaries that GHC constructs).

Metric Decrease:
    LargeRecord

- - - - -
f83374f8 by Krzysztof Gogolewski at 2023-01-31T13:09:14-05:00
Support "unusable UNPACK pragma" warning with -O0

Fixes #11270

- - - - -
a2d814dc by Ben Gamari at 2023-01-31T13:09:50-05:00
configure: Always create the VERSION file

Teach the `configure` script to create the `VERSION` file.
This will serve as the stable interface to allow the user to determine
the version number of a working tree.

Fixes #22322.

- - - - -
5618fc21 by sheaf at 2023-01-31T15:51:06-05:00
Cmm: track the type of global registers

This patch tracks the type of Cmm global registers. This is needed
in order to lint uses of polymorphic registers, such as SIMD vector
registers that can be used both for floating-point and integer values.

This changes allows us to refactor VanillaReg to not store VGcPtr,
as that information is instead stored in the type of the usage of the
register.

Fixes #22297

- - - - -
78b99430 by sheaf at 2023-01-31T15:51:06-05:00
Revert "Cmm Lint: relax SIMD register assignment check"

This reverts commit 3be48877, which weakened a Cmm Lint check involving
SIMD vectors. Now that we keep track of the type a global register is
used at, we can restore the original stronger check.

- - - - -
be417a47 by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen/AArch64: Fix debugging output

Previously various panics would rely on a half-written Show
instance, leading to very unhelpful errors. Fix this.

See #22798.

- - - - -
30989d13 by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen: Teach graph-colouring allocator that x18 is unusable

Previously trivColourable for AArch64 claimed that at 18 registers were
trivially-colourable. This is incorrect as x18 is reserved by the platform on
AArch64/Darwin.

See #22798.

- - - - -
7566fd9d by Ben Gamari at 2023-01-31T15:51:45-05:00
nativeGen/AArch64: Fix graph-colouring allocator

Previously various `Instr` queries used by the graph-colouring allocator
failed to handle a few pseudo-instructions. This manifested in compiler
panicks while compiling `SHA`, which uses `-fregs-graph`.

Fixes #22798.

- - - - -
2cb500a5 by Ben Gamari at 2023-01-31T15:51:45-05:00
testsuite: Add regression test for #22798

- - - - -
03d693b2 by Ben Gamari at 2023-01-31T15:52:32-05:00
Revert "Hadrian: fix doc generation"

This is too large of a hammer.

This reverts commit 5640cb1d84d3cce4ce0a9e90d29b2b20d2b38c2f.

- - - - -
f838815c by Ben Gamari at 2023-01-31T15:52:32-05:00
hadrian: Sphinx docs require templated cabal files

The package-version discovery logic in
`doc/users_guide/package_versions.py` uses packages' cabal files to
determine package versions. Teach Sphinx about these dependencies in
cases where the cabal files are generated by templates.

- - - - -
2e48c19a by Ben Gamari at 2023-01-31T15:52:32-05:00
hadrian: Refactor templating logic

This refactors Hadrian's autoconf-style templating logic to be explicit
about which interpolation variables should be substituted in which
files. This clears the way to fix #22714 without incurring rule cycles.

- - - - -
93f0e3c4 by Ben Gamari at 2023-01-31T15:52:33-05:00
hadrian: Substitute LIBRARY_*_VERSION variables

This teaches Hadrian to substitute the `LIBRARY_*_VERSION` variables
in `libraries/prologue.txt`, fixing #22714.

Fixes #22714.

- - - - -
22089f69 by Ben Gamari at 2023-01-31T20:46:27-05:00
Bump transformers submodule to 0.6.0.6

Fixes #22862.

- - - - -
f0eefa3c by Cheng Shao at 2023-01-31T20:47:03-05:00
compiler: properly handle non-word-sized CmmSwitch scrutinees in the wasm NCG

Currently, the wasm NCG has an implicit assumption: all CmmSwitch
scrutinees are 32-bit integers. This is not always true; #22864 is one
counter-example with a 64-bit scrutinee. This patch fixes the logic by
explicitly converting the scrutinee to a word that can be used as a
br_table operand. Fixes #22871. Also includes a regression test.

- - - - -
9f95db54 by Simon Peyton Jones at 2023-02-01T08:55:08+00:00
Improve treatment of type applications in patterns

This patch fixes a subtle bug in the typechecking of type
applications in patterns, e.g.
   f (MkT @Int @a x y) = ...

See Note [Type applications in patterns] in GHC.Tc.Gen.Pat.

This fixes #19847, #22383, #19577, #21501

- - - - -
955a99ea by Simon Peyton Jones at 2023-02-01T12:31:23-05:00
Treat existentials correctly in dubiousDataConInstArgTys

Consider (#22849)

 data T a where
   MkT :: forall k (t::k->*) (ix::k). t ix -> T @k a

Then dubiousDataConInstArgTys MkT [Type, Foo] should return
        [Foo (ix::Type)]
NOT     [Foo (ix::k)]

A bit of an obscure case, but it's an outright bug, and the fix is easy.

- - - - -
0cc16aaf by Matthew Pickering at 2023-02-01T12:31:58-05:00
Bump supported LLVM range from 10 through 15 to 11 through 16

LLVM 15 turns on the new pass manager by default, which we have yet to
migrate to so for new we pass the `-enable-new-pm-0` flag in our
llvm-passes flag.

LLVM 11 was the first version to support the `-enable-new-pm` flag so we
bump the lowest supported version to 11.

Our CI jobs are using LLVM 12 so they should continue to work despite
this bump to the lower bound.

Fixes #21936

- - - - -
f94f1450 by Matthew Pickering at 2023-02-01T12:31:58-05:00
Bump DOCKER_REV to use alpine image without LLVM installed

alpine_3_12 only supports LLVM 10, which is now outside the supported
version range.

- - - - -
101ec437 by Simon Peyton Jones at 2023-02-01T20:14:50+00:00
Work in progress on #22404

Very much not ready!

- - - - -
7fa50a66 by Sebastian Graf at 2023-02-01T20:14:50+00:00
Partition into OneOccs and ManyOccs

- - - - -
6f619f6e by Simon Peyton Jones at 2023-02-01T20:14:50+00:00
Wibbles

- - - - -
107a54f8 by Simon Peyton Jones at 2023-02-01T20:14:50+00:00
Refactor WithTailJoinDetails

- - - - -
a70b1692 by Simon Peyton Jones at 2023-02-01T22:11:47+00:00
Wibbles

- - - - -


30 changed files:

- .gitlab-ci.yml
- .gitlab/ci.sh
- + .gitlab/gen-ci.cabal
- .gitlab/gen_ci.hs
- + .gitlab/generate_job_metadata
- .gitlab/generate_jobs
- .gitlab/hello.hs
- + .gitlab/hie.yaml
- .gitlab/jobs.yaml
- + .gitlab/rel_eng/default.nix
- + .gitlab/rel_eng/fetch-gitlab-artifacts/.gitignore
- + .gitlab/rel_eng/fetch-gitlab-artifacts/README.mkd
- + .gitlab/rel_eng/fetch-gitlab-artifacts/default.nix
- + .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- + .gitlab/rel_eng/fetch-gitlab-artifacts/setup.py
- + .gitlab/rel_eng/mk-ghcup-metadata/.gitignore
- + .gitlab/rel_eng/mk-ghcup-metadata/README.mkd
- + .gitlab/rel_eng/mk-ghcup-metadata/default.nix
- + .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- + .gitlab/rel_eng/mk-ghcup-metadata/setup.py
- + .gitlab/rel_eng/nix/sources.json
- + .gitlab/rel_eng/nix/sources.nix
- + .gitlab/rel_eng/upload.sh
- .gitlab/upload_ghc_libs.py → .gitlab/rel_eng/upload_ghc_libs.py
- CODEOWNERS
- INSTALL.md
- boot
- cabal.project-reinstall
- compiler/CodeGen.Platform.h
- compiler/GHC.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/614e35acd06214b318bcac5797ca6e2bd0d3dc96...a70b1692126efe41cf87d282f4968ee6e32561dd

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/614e35acd06214b318bcac5797ca6e2bd0d3dc96...a70b1692126efe41cf87d282f4968ee6e32561dd
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