[Git][ghc/ghc][wip/or-pats] 79 commits: ghc-the-library: Retain cafs in both static in dynamic builds.

David (@knothed) gitlab at gitlab.haskell.org
Thu Feb 9 15:15:20 UTC 2023



David pushed to branch wip/or-pats at Glasgow Haskell Compiler / GHC


Commits:
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.

- - - - -
083e26ed by Matthew Pickering at 2023-02-01T17:43:21-05:00
Remove tracing OPTIONS_GHC

These were accidentally left over from !9542

- - - - -
354aa47d by Teo Camarasu at 2023-02-01T17:44:00-05:00
doc: fix gcdetails_block_fragmentation_bytes since annotation

- - - - -
61ce5bf6 by Jaro Reinders at 2023-02-02T00:15:30-05:00
compiler: Implement higher order patterns in the rule matcher

This implements proposal 555 and closes ticket #22465.
See the proposal and ticket for motivation.

The core changes of this patch are in the GHC.Core.Rules.match function
and they are explained in the Note [Matching higher order patterns].

- - - - -
394b91ce by doyougnu at 2023-02-02T00:16:10-05:00
CI: JavaScript backend runs testsuite

This MR runs the testsuite for the JS backend. Note that this is a
temporary solution until !9515 is merged.

Key point: The CI runs hadrian on the built cross compiler _but not_ on
the bindist.

Other Highlights:

 - stm submodule gets a bump to mark tests as broken
 - several tests are marked as broken or are fixed by adding more
 - conditions to their test runner instance.

List of working commit messages:

CI: test cross target _and_ emulator

CI: JS: Try run testsuite with hadrian

JS.CI: cleanup and simplify hadrian invocation

use single bracket, print info

JS CI: remove call to test_compiler from hadrian

don't build haddock

JS: mark more tests as broken

Tracked in https://gitlab.haskell.org/ghc/ghc/-/issues/22576

JS testsuite: don't skip sum_mod test

Its expected to fail, yet we skipped it which automatically makes it
succeed leading to an unexpected success,

JS testsuite: don't mark T12035j as skip

leads to an unexpected pass

JS testsuite: remove broken on T14075

leads to unexpected pass

JS testsuite: mark more tests as broken

JS testsuite: mark T11760 in base as broken

JS testsuite: mark ManyUnbSums broken

submodules: bump process and hpc for JS tests

Both submodules has needed tests skipped or marked broken for th JS
backend. This commit now adds these changes to GHC.

See:

HPC: https://gitlab.haskell.org/hpc/hpc/-/merge_requests/21

Process: https://github.com/haskell/process/pull/268

remove js_broken on now passing tests

separate wasm and js backend ci

test: T11760: add threaded, non-moving only_ways

test: T10296a add req_c

T13894: skip for JS backend

tests: jspace, T22333: mark as js_broken(22573)

test: T22513i mark as req_th

stm submodule: mark stm055, T16707 broken for JS

tests: js_broken(22374) on unpack_sums_6, T12010

dont run diff on JS CI, cleanup

fixup: More CI cleanup

fix: align text to master

fix: align exceptions submodule to master

CI: Bump DOCKER_REV

Bump to ci-images commit that has a deb11 build with node. Required for
!9552

testsuite: mark T22669 as js_skip

See #22669

This test tests that .o-boot files aren't created when run in using the
interpreter backend. Thus this is not relevant for the JS backend.

testsuite: mark T22671 as broken on JS

See #22835

base.testsuite: mark Chan002 fragile for JS

see #22836

revert: submodule process bump

bump stm submodule

New hash includes skips for the JS backend.

testsuite: mark RnPatternSynonymFail broken on JS

Requires TH:
 - see !9779
 - and #22261

compiler: GHC.hs ifdef import Utils.Panic.Plain

- - - - -
1ffe770c by Cheng Shao at 2023-02-02T09:40:38+00:00
docs: 9.6 release notes for wasm backend

- - - - -
0ada4547 by Matthew Pickering at 2023-02-02T11:39:44-05:00
Disable unfolding sharing for interface files with core definitions

Ticket #22807 pointed out that the RHS sharing was not compatible with
-fignore-interface-pragmas because the flag would remove unfoldings from
identifiers before the `extra-decls` field was populated.

For the 9.6 timescale the only solution is to disable this sharing,
which will make interface files bigger but this is acceptable for the
first release of `-fwrite-if-simplified-core`.

For 9.8 it would be good to fix this by implementing #20056 due to the
large number of other bugs that would fix.

I also improved the error message in tc_iface_binding to avoid the "no match
in record selector" error but it should never happen now as the entire
sharing logic is disabled.

Also added the currently broken test for #22807 which could be fixed by
!6080

Fixes #22807

- - - - -
7e2d3eb5 by lrzlin at 2023-02-03T05:23:27-05:00
Enable tables next to code for LoongArch64

- - - - -
2931712a by Wander Hillen at 2023-02-03T05:24:06-05:00
Move pthread and timerfd ticker implementations to separate files

- - - - -
41c4baf8 by Ben Gamari at 2023-02-03T05:24:44-05:00
base: Fix Note references in GHC.IO.Handle.Types

- - - - -
31358198 by Bodigrim at 2023-02-03T05:25:22-05:00
Bump submodule containers to 0.6.7

Metric Decrease:
    ManyConstructors
    T10421
    T12425
    T12707
    T13035
    T13379
    T15164
    T1969
    T783
    T9198
    T9961
    WWRec

- - - - -
8feb9301 by Ben Gamari at 2023-02-03T05:25:59-05:00
gitlab-ci: Eliminate redundant ghc --info output

Previously ci.sh would emit the output of `ghc --info` every time it ran
when using the nix toolchain. This produced a significant amount of
noise.

See #22861.
- - - - -
de1d1512 by Ryan Scott at 2023-02-03T14:07:30-05:00
Windows: Remove mingwex dependency

The clang based toolchain uses ucrt as its math library
and so mingwex is no longer needed.  In fact using mingwex
will cause incompatibilities as the default routines in both
have differing ULPs and string formatting modifiers.

```
$ LIBRARY_PATH=/mingw64/lib ghc/_build/stage1/bin/ghc Bug.hs -fforce-recomp && ./Bug.exe
[1 of 2] Compiling Main             ( Bug.hs, Bug.o )
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__imp___p__environ'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__hscore_get_errno'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziError_errnoToIOError_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziWindows_failIf2_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePageziAPI_mkCodePageEncoding_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePage_currentCodePage_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncoding_getForeignEncoding_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziString_withCStringLen1_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziInternals_zdwflushCharReadBuffer_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziText_hGetBuf1_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziFingerprint_fingerprintString_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_DataziTypeableziInternal_mkTrCon_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziException_errorCallWithCallStackException_closure'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziErr_error_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `base_DataziMaybe_fromJust1_info'
ghc.exe:  | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `templatezmhaskell_LanguageziHaskellziTHziSyntax_IntPrimL_con_info'
ghc.exe: ^^ Could not load 'templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure', dependency unresolved. See top entry above.

<no location info>: error:

GHC.ByteCode.Linker.lookupCE
During interactive linking, GHCi couldn't find the following symbol:
  templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure
This may be due to you not asking GHCi to load extra object files,
archives or DLLs needed by your current session.  Restart GHCi, specifying
the missing library using the -L/path/to/object/dir and -lmissinglibname
flags, or simply by naming the relevant files on the GHCi command line.
Alternatively, this link failure might indicate a bug in GHCi.
If you suspect the latter, please report this as a GHC bug:
  https://www.haskell.org/ghc/reportabug
```

- - - - -
48e39195 by Tamar Christina at 2023-02-03T14:07:30-05:00
linker: Fix BFD import libraries

This commit fixes the BFD style import library support in the runtime
linker.  This was accidentally broken during the refactoring to clang
and went unnoticed because clang itself is unable to generate the BFD
style import libraries.

With this change we can not link against both GCC or Clang produced
libraries again and intermix code produced by both compilers.

- - - - -
b2bb3e62 by Ben Gamari at 2023-02-03T14:07:30-05:00
Bump Windows toolchain

Updates to LLVM 14, hopefully fixing #21964.

- - - - -
bf3f88a1 by Andreas Klebinger at 2023-02-03T14:08:07-05:00
Fix CallerCC potentially shadowing other cost centres.

Add a CallerCC cost centre flavour for cost centres added by the
CallerCC pass. This avoids potential accidental shadowing between
CCs added by user annotations and ones added by CallerCC.

- - - - -
faea4bcd by j at 2023-02-03T14:08:47-05:00
Disable several ignore-warning flags in genapply.
- - - - -
25537dfd by Ben Gamari at 2023-02-04T04:12:57-05:00
Revert "Use fix-sized bit-fiddling primops for fixed size boxed types"

This reverts commit 4512ad2d6a8e65ea43c86c816411cb13b822f674.

This was never applied to master/9.6 originally.

(cherry picked from commit a44bdc2720015c03d57f470b759ece7fab29a57a)

- - - - -
7612dc71 by Krzysztof Gogolewski at 2023-02-04T04:13:34-05:00
Minor refactor

* Introduce refactorDupsOn f = refactorDups (comparing f)
* Make mkBigTupleCase and coreCaseTuple monadic.
  Every call to those functions was preceded by calling newUniqueSupply.
* Use mkUserLocalOrCoVar, which is equivalent to combining
  mkLocalIdOrCoVar with mkInternalName.

- - - - -
5a54ac0b by Bodigrim at 2023-02-04T18:48:32-05:00
Fix colors in emacs terminal

- - - - -
3c0f0c6d by Bodigrim at 2023-02-04T18:49:11-05:00
base changelog: move entries which were not backported to ghc-9.6 to base-4.19 section

- - - - -
b18fbf52 by Josh Meredith at 2023-02-06T07:47:57+00:00
Update JavaScript fileStat to match Emscripten layout

- - - - -
6636b670 by Sylvain Henry at 2023-02-06T09:43:21-05:00
JS: replace "js" architecture with "javascript"

Despite Cabal supporting any architecture name, `cabal --check` only
supports a few built-in ones. Sadly `cabal --check` is used by Hackage
hence using any non built-in name in a package (e.g. `arch(js)`) is
rejected and the package is prevented from being uploaded on Hackage.

Luckily built-in support for the `javascript` architecture was added for
GHCJS a while ago. In order to allow newer `base` to be uploaded on
Hackage we make the switch from `js` to `javascript` architecture.

Fixes #22740.

Co-authored-by: Ben Gamari <ben at smart-cactus.org>

- - - - -
77a8234c by Luite Stegeman at 2023-02-06T09:43:59-05:00
Fix marking async exceptions in the JS backend

Async exceptions are posted as a pair of the exception and
the thread object. This fixes the marking pass to correctly
follow the two elements of the pair.

Potentially fixes #22836

- - - - -
3e09cf82 by Jan HrĨek at 2023-02-06T09:44:38-05:00
Remove extraneous word in Roles user guide

- - - - -
b17fb3d9 by sheaf at 2023-02-07T10:51:33-05:00
Don't allow . in overloaded labels

This patch removes . from the list of allowed characters in a non-quoted
overloaded label, as it was realised this steals syntax, e.g. (#.).

Users who want this functionality will have to add quotes around the
label, e.g. `#"17.28"`.

Fixes #22821

- - - - -
5dce04ee by romes at 2023-02-07T10:52:10-05:00
Update kinds in comments in GHC.Core.TyCon

Use `Type` instead of star kind (*)
Fix comment with incorrect kind * to have kind `Constraint`

- - - - -
92916194 by Ben Gamari at 2023-02-07T10:52:48-05:00
Revert "Use fix-sized equality primops for fixed size boxed types"

This reverts commit 024020c38126f3ce326ff56906d53525bc71690c.

This was never applied to master/9.6 originally.

See #20405 for why using these primops is a bad idea.

(cherry picked from commit b1d109ad542e4c37ae5af6ace71baf2cb509d865)

- - - - -
c1670c6b by Sylvain Henry at 2023-02-07T21:25:18-05:00
JS: avoid head/tail and unpackFS

- - - - -
a9912de7 by Krzysztof Gogolewski at 2023-02-07T21:25:53-05:00
testsuite: Fix Python warnings (#22856)

- - - - -
9ee761bf by sheaf at 2023-02-08T14:40:40-05:00
Fix tyvar scoping within class SPECIALISE pragmas

Type variables from class/instance headers scope over class/instance
method type signatures, but DO NOT scope over the type signatures in
SPECIALISE and SPECIALISE instance pragmas.

The logic in GHC.Rename.Bind.rnMethodBinds correctly accounted for
SPECIALISE inline pragmas, but forgot to apply the same treatment
to method SPECIALISE pragmas, which lead to a Core Lint failure with
an out-of-scope type variable. This patch makes sure we apply the same
logic for both cases.

Fixes #22913

- - - - -
7eac2468 by Matthew Pickering at 2023-02-08T14:41:17-05:00
Revert "Don't keep exit join points so much"

This reverts commit caced75765472a1a94453f2e5a439dba0d04a265.

It seems the patch "Don't keep exit join points so much" is causing
wide-spread regressions in the bytestring library benchmarks. If I
revert it then the 9.6 numbers are better on average than 9.4.

See https://gitlab.haskell.org/ghc/ghc/-/issues/22893#note_479525

-------------------------
Metric Decrease:
    MultiComponentModules
    MultiComponentModulesRecomp
    MultiLayerModules
    MultiLayerModulesRecomp
    MultiLayerModulesTH_Make
    T12150
    T13386
    T13719
    T21839c
    T3294
    parsing001
-------------------------

- - - - -
633f2799 by Cheng Shao at 2023-02-08T18:42:16-05:00
testsuite: remove config.use_threads

This patch simplifies the testsuite driver by removing the use_threads
config field. It's just a degenerate case of threads=1.

- - - - -
ca6673e3 by Cheng Shao at 2023-02-08T18:42:16-05:00
testsuite: use concurrent.futures.ThreadPoolExecutor in the driver

The testsuite driver used to create one thread per test case, and
explicitly use semaphore and locks for rate limiting and
synchronization. This is a bad practice in any language, and
occasionally may result in livelock conditions (e.g. #22889). This
patch uses concurrent.futures.ThreadPoolExecutor for scheduling test
case runs, which is simpler and more robust.

- - - - -
f22cce70 by Alan Zimmerman at 2023-02-08T18:42:51-05:00
EPA: Comment between module and where should be in header comments

Do not apply the heuristic to associate a comment with a prior
declaration for the first declaration in the file.

Closes #22919

- - - - -
d69ecac2 by Josh Meredith at 2023-02-09T03:24:05-05:00
JS generated refs: update testsuite conditions

- - - - -
2ea1a6bc by sheaf at 2023-02-09T03:24:44-05:00
Bump transformers to 0.6.1.0

This allows us to avoid orphans for Foldable1 instances,
fixing #22898.

Updates transformers submodule.

- - - - -
39234321 by David Knothe at 2023-02-09T16:12:01+01:00
Add Or Patterns (proposal 0522)

- - - - -
92b811d6 by David Knothe at 2023-02-09T16:12:02+01:00
Update submodule haddock & linting stuff

- - - - -
da87ad2e by David Knothe at 2023-02-09T16:12:03+01:00
Write user guide entry

- - - - -
78f5d9a1 by David Knothe at 2023-02-09T16:12:04+01:00
Add EPAs

- - - - -
f931da29 by David Knothe at 2023-02-09T16:12:05+01:00
Update submodule haddock

- - - - -
08fa293a by David Knothe at 2023-02-09T16:12:05+01:00
Add EPA test

- - - - -
9cb69faa by Sebastian Graf at 2023-02-09T16:12:06+01:00
Adjust the pattern-match checker for Or patterns

Previously, any pattern match or guard could be desugared into a vector of
elementary `PmGrd`s (called `GrdVec`) that must all match conjunctively.

But with Or patterns, that is bound to change, quite drastically so:
Or patterns imply disjunctive matching, and because they may occur
nestedly inside other patterns, we need to widen our `GrdVec` type
to accomodate both conjunctive/sequential as well as disjunctive/alternative
composition.

This leads to a rather modest generalisation of the guard tree formalism,
yielding guard *directed acyclic graphs*. These DAGs are *series-parallel*,
that is to say a *very* benign kind of DAG that is nearly a tree, and which
can be defined easily as an inductive data type, `GrdDag`.

Beyond adjustments to use the new graph constructors, the rest is just routine
re-use of the existing `topToBottom` combinator in `GHC.HsToCore.Pmc.Check`.

Nice!

- - - - -
da22ed42 by David Knothe at 2023-02-09T16:12:07+01:00
Minor things

- - - - -
44471088 by David Knothe at 2023-02-09T16:12:07+01:00
Fix test errors

- - - - -


30 changed files:

- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- cabal.project-reinstall
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Graph.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/Cmm/Type.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/PIC.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c5248a7556f9bde5a639ffee5fa5242c0fa21f60...444710889360821b9fbe83e16354ef7543c84740

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c5248a7556f9bde5a639ffee5fa5242c0fa21f60...444710889360821b9fbe83e16354ef7543c84740
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