[Git][ghc/ghc][wip/tsan/fixes] 150 commits: Allow WARNING pragmas to be controlled with custom categories

[Ben Gamari (@bgamari)]

Ben Gamari pushed to branch wip/tsan/fixes at Glasgow Haskell Compiler / GHC


Commits:
f932c589 by Adam Gundry at 2023-03-24T02:36:09-04:00
Allow WARNING pragmas to be controlled with custom categories

Closes #17209. This implements GHC Proposal 541, allowing a WARNING
pragma to be annotated with a category like so:

    {-# WARNING in "x-partial" head "This function is undefined on empty lists." #-}

The user can then enable, disable and set the severity of such warnings
using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on.  There
is a new warning group `-Wextended-warnings` containing all these warnings.
Warnings without a category are treated as if the category was `deprecations`,
and are (still) controlled by the flags `-Wdeprecations`
and `-Wwarnings-deprecations`.

Updates Haddock submodule.

- - - - -
0426515b by Adam Gundry at 2023-03-24T02:36:09-04:00
Move mention of warning groups change to 9.8.1 release notes

- - - - -
b8d783d2 by Ben Gamari at 2023-03-24T02:36:45-04:00
nativeGen/AArch64: Fix bitmask immediate predicate

Previously the predicate for determining whether a logical instruction
operand could be encoded as a bitmask immediate was far too
conservative. This meant that, e.g., pointer untagged required five
instructions whereas it should only require one.

Fixes #23030.

- - - - -
46120bb6 by Joachim Breitner at 2023-03-24T13:09:43-04:00
User's guide: Improve docs for -Wall

previously it would list the warnings _not_ enabled by -Wall. That’s
unnecessary round-about and was out of date. So let's just name
the relevant warnings (based on `compiler/GHC/Driver/Flags.hs`).

- - - - -
509d1f11 by Ben Gamari at 2023-03-24T13:10:20-04:00
codeGen/tsan: Disable instrumentation of unaligned stores

There is some disagreement regarding the prototype of
`__tsan_unaligned_write` (specifically whether it takes just the written
address, or the address and the value as an argument). Moreover, I have
observed crashes which appear to be due to it. Disable instrumentation
of unaligned stores as a temporary mitigation.

Fixes #23096.

- - - - -
6a73655f by Li-yao Xia at 2023-03-25T00:02:44-04:00
base: Document GHC versions associated with past base versions in the changelog

- - - - -
43bd7694 by Teo Camarasu at 2023-03-25T00:03:24-04:00
Add regression test for #17574

This test currently fails in the nonmoving way

- - - - -
f2d56bf7 by Teo Camarasu at 2023-03-25T00:03:24-04:00
fix: account for large and compact object stats with nonmoving gc

Make sure that we keep track of the size of large and compact objects that have been moved onto the nonmoving heap.
We keep track of their size and add it to the amount of live bytes in nonmoving segments to get the total size of the live nonmoving heap.

Resolves #17574

- - - - -
7131b705 by David Feuer at 2023-03-25T00:04:04-04:00
Modify ThreadId documentation and comments

For a long time, `GHC.Conc.Sync` has said

```haskell
-- ToDo: data ThreadId = ThreadId (Weak ThreadId#)
-- But since ThreadId# is unlifted, the Weak type must use open
-- type variables.
```

We are now actually capable of using `Weak# ThreadId#`, but the
world has moved on. To support the `Show` and `Ord` instances, we'd
need to store the thread ID number in the `ThreadId`. And it seems
very difficult to continue to support `threadStatus` in that regime,
since it needs to be able to explain how threads died. In addition,
garbage collection of weak references can be quite expensive, and it
would be hard to evaluate the cost over he whole ecosystem. As discussed
in
[this CLC issue](https://github.com/haskell/core-libraries-committee/issues/125),
it doesn't seem very likely that we'll actually switch to weak
references here.

- - - - -
c421bbbb by Ben Gamari at 2023-03-25T00:04:41-04:00
rts: Fix barriers of IND and IND_STATIC

Previously IND and IND_STATIC lacked the acquire barriers enjoyed by
BLACKHOLE. As noted in the (now updated) Note [Heap memory barriers],
this barrier is critical to ensure that the indirectee is visible to the
entering core.

Fixes #22872.

- - - - -
62fa7faa by Bodigrim at 2023-03-25T00:05:22-04:00
Improve documentation of atomicModifyMutVar2#

- - - - -
b2d14d0b by Cheng Shao at 2023-03-25T03:46:43-04:00
rts: use performBlockingMajorGC in hs_perform_gc and fix ffi023

This patch does a few things:

- Add the missing RtsSymbols.c entry of performBlockingMajorGC
- Make hs_perform_gc call performBlockingMajorGC, which restores
  previous behavior
- Use hs_perform_gc in ffi023
- Remove rts_clearMemory() call in ffi023, it now works again in some
  test ways previously marked as broken. Fixes #23089

- - - - -
d9ae24ad by Cheng Shao at 2023-03-25T03:46:44-04:00
testsuite: add the rts_clearMemory test case

This patch adds a standalone test case for rts_clearMemory that mimics
how it's typically used by wasm backend users and ensures this RTS API
isn't broken by future RTS refactorings. Fixes #23901.

- - - - -
80729d96 by Bodigrim at 2023-03-25T03:47:22-04:00
Improve documentation for resizing of byte arrays

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c6ec4cd1 by Ben Gamari at 2023-03-25T20:23:47-04:00
rts: Don't rely on EXTERN_INLINE for slop-zeroing logic

Previously we relied on calling EXTERN_INLINE functions defined in
ClosureMacros.h from Cmm to zero slop. However, as far as I can tell,
this is no longer safe to do in C99 as EXTERN_INLINE definitions may be emitted
in each compilation unit.

Fix this by explicitly declaring a new set of non-inline functions in
ZeroSlop.c which can be called from Cmm and marking the ClosureMacros.h
definitions as INLINE_HEADER.

In the future we should try to eliminate EXTERN_INLINE.

- - - - -
c32abd4b by Ben Gamari at 2023-03-25T20:23:48-04:00
rts: Fix capability-count check in zeroSlop

Previously `zeroSlop` examined `RtsFlags` to determine whether the
program was single-threaded. This is wrong; a program may be started
with `+RTS -N1` yet the process may later increase the capability count
with `setNumCapabilities`. This lead to quite subtle and rare crashes.

Fixes #23088.

- - - - -
656d4cb3 by Ryan Scott at 2023-03-25T20:24:23-04:00
Add Eq/Ord instances for SSymbol, SChar, and SNat

This implements [CLC proposal #148](https://github.com/haskell/core-libraries-committee/issues/148).

- - - - -
4f93de88 by David Feuer at 2023-03-26T15:33:02-04:00
Update and expand atomic modification Haddocks

* The documentation for `atomicModifyIORef` and `atomicModifyIORef'`
  were incomplete, and the documentation for `atomicModifyIORef` was
  out of date. Update and expand.

* Remove a useless lazy pattern match in the definition of
  `atomicModifyIORef`. The pair it claims to match lazily
  was already forced by `atomicModifyIORef2`.

- - - - -
e1fb56b2 by David Feuer at 2023-03-26T15:33:41-04:00
Document the constructor name for lists

Derived `Data` instances use raw infix constructor names when applicable.
The `Data.Data [a]` instance, if derived, would have a constructor name
of `":"`. However, it actually uses constructor name `"(:)"`. Document this
peculiarity.

See https://github.com/haskell/core-libraries-committee/issues/147

- - - - -
c1f755c4 by Simon Peyton Jones at 2023-03-27T22:09:41+01:00
Make exprIsConApp_maybe a bit cleverer

Addresses #23159.

See Note Note [Exploit occ-info in exprIsConApp_maybe]
in GHC.Core.SimpleOpt.

Compile times go down very slightly, but always go down,
never up.  Good!

Metrics: compile_time/bytes allocated
------------------------------------------------
 CoOpt_Singletons(normal)   -1.8%
           T15703(normal)   -1.2% GOOD

                geo. mean   -0.1%
                minimum     -1.8%
                maximum     +0.0%

Metric Decrease:
    CoOpt_Singletons
    T15703

- - - - -
76bb4c58 by Ryan Scott at 2023-03-28T08:12:08-04:00
Add COMPLETE pragmas to TypeRep, SSymbol, SChar, and SNat

This implements
[CLC proposal #149](https://github.com/haskell/core-libraries-committee/issues/149).

- - - - -
3f374399 by sheaf at 2023-03-29T13:57:33+02:00
Handle records in the renamer

This patch moves the field-based logic for disambiguating record updates
to the renamer. The type-directed logic, scheduled for removal, remains
in the typechecker.

To do this properly (and fix the myriad of bugs surrounding the treatment
of duplicate record fields), we took the following main steps:

  1. Create GREInfo, a renamer-level equivalent to TyThing which stores
     information pertinent to the renamer.
     This allows us to uniformly treat imported and local Names in the
     renamer, as described in Note [GREInfo].

  2. Remove GreName. Instead of a GlobalRdrElt storing GreNames, which
     distinguished between normal names and field names, we now store
     simple Names in GlobalRdrElt, along with the new GREInfo information
     which allows us to recover the FieldLabel for record fields.

  3. Add namespacing for record fields, within the OccNames themselves.
     This allows us to remove the mangling of duplicate field selectors.

     This change ensures we don't print mangled names to the user in
     error messages, and allows us to handle duplicate record fields
     in Template Haskell.

  4. Move record disambiguation to the renamer, and operate on the
     level of data constructors instead, to handle #21443.

     The error message text for ambiguous record updates has also been
     changed to reflect that type-directed disambiguation is on the way
     out.

(3) means that OccEnv is now a bit more complex: we first key on the
textual name, which gives an inner map keyed on NameSpace:

  OccEnv a ~ FastStringEnv (UniqFM NameSpace a)

Note that this change, along with (2), both increase the memory residency
of GlobalRdrEnv = OccEnv [GlobalRdrElt], which causes a few tests to
regress somewhat in compile-time allocation.

Even though (3) simplified a lot of code (in particular the treatment of
field selectors within Template Haskell and in error messages), it came
with one important wrinkle: in the situation of

  -- M.hs-boot
  module M where { data A; foo :: A -> Int }
  -- M.hs
  module M where { data A = MkA { foo :: Int } }

we have that M.hs-boot exports a variable foo, which is supposed to match
with the record field foo that M exports. To solve this issue, we add a
new impedance-matching binding to M

  foo{var} = foo{fld}

This mimics the logic that existed already for impedance-binding DFunIds,
but getting it right was a bit tricky.
See Note [Record field impedance matching] in GHC.Tc.Module.

We also needed to be careful to avoid introducing space leaks in GHCi.
So we dehydrate the GlobalRdrEnv before storing it anywhere, e.g. in
ModIface. This means stubbing out all the GREInfo fields, with the
function forceGlobalRdrEnv.
When we read it back in, we rehydrate with rehydrateGlobalRdrEnv.
This robustly avoids any space leaks caused by retaining old type
environments.

Fixes #13352 #14848 #17381 #17551 #19664 #21443 #21444 #21720 #21898 #21946 #21959 #22125 #22160 #23010 #23062 #23063

Updates haddock submodule

-------------------------
Metric Increase:
    MultiComponentModules
    MultiLayerModules
    MultiLayerModulesDefsGhci
    MultiLayerModulesNoCode
    T13701
    T14697
    hard_hole_fits
-------------------------

- - - - -
4f1940f0 by sheaf at 2023-03-29T13:57:33+02:00
Avoid repeatedly shadowing in shadowNames

This commit refactors GHC.Type.Name.Reader.shadowNames to first
accumulate all the shadowing arising from the introduction of a new
set of GREs, and then applies all the shadowing to the old GlobalRdrEnv
in one go.

- - - - -
d246049c by sheaf at 2023-03-29T13:57:34+02:00
igre_prompt_env: discard "only-qualified" names

We were unnecessarily carrying around names only available qualified
in igre_prompt_env, violating the icReaderEnv invariant.
We now get rid of these, as they aren't needed for the shadowing
computation that igre_prompt_env exists for.

Fixes #23177

-------------------------
Metric Decrease:
    T14052
    T14052Type
-------------------------

- - - - -
41a572f6 by Matthew Pickering at 2023-03-29T16:17:21-04:00
hadrian: Fix path to HpcParser.y

The source for this project has been moved into a src/ folder so we also
need to update this path.

Fixes #23187

- - - - -
b159e0e9 by doyougnu at 2023-03-30T01:40:08-04:00
js: split JMacro into JS eDSL and JS syntax

This commit:

Splits JExpr and JStat into two nearly identical DSLs:
- GHC.JS.Syntax is the JMacro based DSL without unsaturation, i.e., a
value cannot be unsaturated, or, a value of this DSL is a witness that a
value of GHC.JS.Unsat has been saturated
- GHC.JS.Unsat is the JMacro DSL from GHCJS with Unsaturation.

Then all binary and outputable instances are changed to use
GHC.JS.Syntax.

This moves us closer to closing out #22736 and #22352. See #22736 for
roadmap.

-------------------------
Metric Increase:
    CoOpt_Read
    LargeRecord
    ManyAlternatives
    PmSeriesS
    PmSeriesT
    PmSeriesV
    T10421
    T10858
    T11195
    T11374
    T11822
    T12227
    T12707
    T13035
    T13253
    T13253-spj
    T13379
    T14683
    T15164
    T15703
    T16577
    T17096
    T17516
    T17836
    T18140
    T18282
    T18304
    T18478
    T18698a
    T18698b
    T18923
    T1969
    T19695
    T20049
    T21839c
    T3064
    T4801
    T5321FD
    T5321Fun
    T5631
    T5642
    T783
    T9198
    T9233
    T9630
    TcPlugin_RewritePerf
    WWRec
-------------------------

- - - - -
f4f1f14f by Sylvain Henry at 2023-03-30T01:40:49-04:00
ghc-heap: remove wrong Addr# coercion (#23181)

Conversion from Addr# to I# isn't correct with the JS backend.

Also used the opportunity to reenable 64-bit Word/Int tests

- - - - -
a5360490 by Ben Gamari at 2023-03-30T01:41:25-04:00
testsuite: Fix racing prints in T21465

As noted in #23155, we previously failed to add flushes necessary to
ensure predictable output.

Fixes #23155.

- - - - -
98b5cf67 by Matthew Pickering at 2023-03-30T09:58:40+01:00
Revert "ghc-heap: remove wrong Addr# coercion (#23181)"

This reverts commit f4f1f14f8009c3c120b8b963ec130cbbc774ec02.

This fails to build with GHC-9.2 as a boot compiler.

See #23195 for tracking this issue.

- - - - -
61a2dfaa by Bodigrim at 2023-03-30T14:35:57-04:00
Add {-# WARNING #-} to Data.List.{head,tail}

- - - - -
8f15c47c by Bodigrim at 2023-03-30T14:35:57-04:00
Fixes to accomodate Data.List.{head,tail} with {-# WARNING #-}

- - - - -
7c7dbade by Bodigrim at 2023-03-30T14:35:57-04:00
Bump submodules

- - - - -
d2d8251b by Bodigrim at 2023-03-30T14:35:57-04:00
Fix tests

- - - - -
3d38dcb6 by sheaf at 2023-03-30T14:35:57-04:00
Proxies for head and tail: review suggestions
- - - - -
930edcfd by sheaf at 2023-03-30T14:36:33-04:00
docs: move RecordUpd changelog entry to 9.8

This was accidentally included in the 9.6 changelog
instead of the 9.6 changelog.
- - - - -
6f885e65 by sheaf at 2023-03-30T14:37:09-04:00
Add LANGUAGE GADTs to GHC.Rename.Env

We need to enable this extension for the file to compile with ghc 9.2,
as we are pattern matching on a GADT and this required the GADT extension
to be enabled until 9.4.
- - - - -
6d6a37a8 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: make lint-ci-config job fast again

We don't pin our nixpkgs revision and tracks the default
nixpkgs-unstable channel anyway. Instead of using
haskell.packages.ghc924, we should be using haskell.packages.ghc92 to
maximize the binary cache hit rate and make lint-ci-config job fast
again. Also bumps the nix docker image to the latest revision.

- - - - -
ef1548c4 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: ensure that all non-i386 pipelines do parallel xz compression

We can safely enable parallel xz compression for non-i386 pipelines.
However, previously we didn't export XZ_OPT, so the xz process won't
see it if XZ_OPT hasn't already been set in the current job.

- - - - -
20432d16 by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: unset CROSS_EMULATOR for js job

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4a24dbbe by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: fix lint-testsuite job

The list_broken make target will transitively depend on the
calibrate.out target, which used STAGE1_GHC instead of TEST_HC. It
really should be TEST_HC since that's what get passed in the gitlab CI
config.

- - - - -
cea56ccc by Cheng Shao at 2023-03-30T18:42:56+00:00
ci: use alpine3_17-wasm image for wasm jobs

Bump the ci-images dependency and use the new alpine3_17-wasm docker
image for wasm jobs.

- - - - -
79d0cb32 by Ben Gamari at 2023-03-30T18:43:53+00:00
testsuite/driver: Add basic support for testing cross-compilers

- - - - -
e7392b4e by Ben Gamari at 2023-03-30T18:43:53+00:00
testsuite/driver: Normalize away differences in ghc executable name

- - - - -
ee160d06 by Ben Gamari at 2023-03-30T18:43:53+00:00
hadrian: Pass CROSS_EMULATOR to runtests.py

- - - - -
30c84511 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: don't add optllvm way for wasm32

- - - - -
f1beee36 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: normalize the .wasm extension

- - - - -
a984a103 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: strip the cross ghc prefix in output and error message

- - - - -
f7478d95 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: handle target executable extension

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8fe8b653 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: mypy typing error fixes

This patch fixes some mypy typing errors which weren't caught in
previous linting jobs.

- - - - -
0149f32f by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: use context variable instead of thread-local variable

This patch changes a thread-local variable to context variable
instead, which works as intended when the testsuite transitions to use
asyncio & coroutines instead of multi-threading to concurrently run
test cases. Note that this also raises the minimum Python version to
3.7.

- - - - -
ea853ff0 by Cheng Shao at 2023-03-30T18:43:53+00:00
testsuite: asyncify the testsuite driver

This patch refactors the testsuite driver, gets rid of multi-threading
logic for running test cases concurrently, and uses asyncio &
coroutines instead. This is not yak shaving for its own sake; the
previous multi-threading logic is prone to livelock/deadlock
conditions for some reason, even if the total number of threads is
bounded to a thread pool's capacity.

The asyncify change is an internal implementation detail of the
testsuite driver and does not impact most GHC maintainers out there.
The patch does not touch the .T files, test cases can be
added/modified the exact same way as before.

- - - - -
0077cb22 by Matthew Pickering at 2023-03-31T21:28:28-04:00
Add test for T23184

There was an outright bug, which Simon fixed in July 2021, as a little side-fix on a complicated patch:

```
commit 6656f0165a30fc2a22208532ba384fc8e2f11b46
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Fri Jul 23 23:57:01 2021 +0100

    A bunch of changes related to eta reduction

    This is a large collection of changes all relating to eta
    reduction, originally triggered by #18993, but there followed
    a long saga.

    Specifics:

...lots of lines omitted...

    Other incidental changes

    * Fix a fairly long-standing outright bug in the ApplyToVal case of
      GHC.Core.Opt.Simplify.mkDupableContWithDmds. I was failing to take the
      tail of 'dmds' in the recursive call, which meant the demands were All
      Wrong.  I have no idea why this has not caused problems before now.
```

Note this "Fix a fairly longstanding outright bug".   This is the specific fix
```
@@ -3552,8 +3556,8 @@ mkDupableContWithDmds env dmds
         --              let a = ...arg...
         --              in [...hole...] a
         -- NB: sc_dup /= OkToDup; that is caught earlier by contIsDupable
-    do  { let (dmd:_) = dmds   -- Never fails
-        ; (floats1, cont') <- mkDupableContWithDmds env dmds cont
+    do  { let (dmd:cont_dmds) = dmds   -- Never fails
+        ; (floats1, cont') <- mkDupableContWithDmds env cont_dmds cont
         ; let env' = env `setInScopeFromF` floats1
         ; (_, se', arg') <- simplArg env' dup se arg
         ; (let_floats2, arg'') <- makeTrivial env NotTopLevel dmd (fsLit "karg") arg'
```
Ticket #23184 is a report of the bug that this diff fixes.

- - - - -
62d25071 by mangoiv at 2023-04-01T04:20:01-04:00
[feat] make ($) representation polymorphic
- this change was approved by the CLC in [1] following a CLC proposal [2]
- make ($) representation polymorphic (adjust the type signature)
- change ($) implementation to allow additional polymorphism
- adjust the haddock of ($) to reflect these changes
- add additional documentation to document these changes
- add changelog entry
- adjust tests (move now succeeding tests and adjust stdout of some
  tests)

[1] https://github.com/haskell/core-libraries-committee/issues/132#issuecomment-1487456854
[2] https://github.com/haskell/core-libraries-committee/issues/132

- - - - -
77c33fb9 by Artem Pelenitsyn at 2023-04-01T04:20:41-04:00
User Guide: update copyright year: 2020->2023

- - - - -
3b5be05a by doyougnu at 2023-04-01T09:42:31-04:00
driver: Unit State Data.Map -> GHC.Unique.UniqMap

In pursuit of #22426. The driver and unit state are major contributors.

This commit also bumps the haddock submodule to reflect the API changes in
UniqMap.

-------------------------
Metric Decrease:
    MultiComponentModules
    MultiComponentModulesRecomp
    T10421
    T10547
    T12150
    T12234
    T12425
    T13035
    T16875
    T18140
    T18304
    T18698a
    T18698b
    T18923
    T20049
    T5837
    T6048
    T9198
-------------------------

- - - - -
a84fba6e by Torsten Schmits at 2023-04-01T09:43:12-04:00
Add structured error messages for GHC.Tc.TyCl

Tracking ticket: #20117

MR: !10183

This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.

- - - - -
6e2eb275 by doyougnu at 2023-04-01T18:27:56-04:00
JS: Linker: use saturated JExpr

Follow on to MR!10142 in pursuit of #22736

- - - - -
3da69346 by sheaf at 2023-04-01T18:28:37-04:00
Improve haddocks of template-haskell Con datatype

This adds a bit more information, in particular about the lists of
constructors in the GadtC and RecGadtC cases.

- - - - -
3b7bbb39 by sheaf at 2023-04-01T18:28:37-04:00
TH: revert changes to GadtC & RecGadtC

Commit 3f374399 included a breaking-change to the template-haskell
library when it made the GadtC and RecGadtC constructors take non-empty
lists of names. As this has the potential to break many users' packages,
we decided to revert these changes for now.

- - - - -
f60f6110 by Bodigrim at 2023-04-02T18:59:30-04:00
Rework documentation for data Char

- - - - -
43ebd5dc by Bodigrim at 2023-04-02T19:00:09-04:00
cmm: implement parsing of MO_AtomicRMW from hand-written CMM files

Fixes #23206

- - - - -
ab9cd52d by Sylvain Henry at 2023-04-03T08:15:21-04:00
ghc-heap: remove wrong Addr# coercion (#23181)

Conversion from Addr# to I# isn't correct with the JS backend.

- - - - -
2b2afff3 by Matthew Pickering at 2023-04-03T08:15:58-04:00
hadrian: Update bootstrap plans for 9.2.6, 9.2.7, 9.4.4, 9.4.5, 9.6.1

Also fixes the ./generate_bootstrap_plans script which was recently
broken

We can hopefully drop the 9.2 plans soon but they still work so kept
them around for now.

- - - - -
c2605e25 by Matthew Pickering at 2023-04-03T08:15:58-04:00
ci: Add job to test 9.6 bootstrapping

- - - - -
53e4d513 by Krzysztof Gogolewski at 2023-04-03T08:16:35-04:00
hadrian: Improve option parsing

Several options in Hadrian had their argument marked as optional
(`OptArg`), but if the argument wasn't there they were just giving an
error. It's more idiomatic to mark the argument as required instead;
the code uses less Maybes, the parser can enforce that the argument
is present, --help gives better output.

- - - - -
a8e36892 by Sylvain Henry at 2023-04-03T08:17:16-04:00
JS: fix issues with FD api support

- Add missing implementations for fcntl_read/write/lock
- Fix fdGetMode

These were found while implementing TH in !9779. These functions must be
used somehow by the external interpreter code.

- - - - -
8b092910 by Haskell-mouse at 2023-04-03T19:31:26-04:00
Convert diagnostics in GHC.Rename.HsType to proper TcRnMessage

I've turned all occurrences of TcRnUnknownMessage in GHC.Rename.HsType
module into a proper TcRnMessage.
Instead, these TcRnMessage messages were introduced:

TcRnDataKindsError
TcRnUnusedQuantifiedTypeVar
TcRnIllegalKindSignature
TcRnUnexpectedPatSigType
TcRnSectionPrecedenceError
TcRnPrecedenceParsingError
TcRnIllegalKind
TcRnNegativeNumTypeLiteral
TcRnUnexpectedKindVar
TcRnBindMultipleVariables
TcRnBindVarAlreadyInScope

- - - - -
220a7a48 by Krzysztof Gogolewski at 2023-04-03T19:32:02-04:00
Fixes around unsafeCoerce#

1. `unsafeCoerce#` was documented in `GHC.Prim`. But since the overhaul
in 74ad75e87317, `unsafeCoerce#` is no longer defined there.
I've combined the documentation in `GHC.Prim` with the `Unsafe.Coerce` module.

2. The documentation of `unsafeCoerce#` stated that you should not
cast a function to an algebraic type, even if you later cast it back
before applying it. But ghci was doing that type of cast, as can be seen
with 'ghci -ddump-ds' and typing 'x = not'. I've changed it to use Any
following the documentation.

- - - - -
9095e297 by Matthew Craven at 2023-04-04T01:04:10-04:00
Add a few more memcpy-ish primops

* copyMutableByteArrayNonOverlapping#
* copyAddrToAddr#
* copyAddrToAddrNonOverlapping#
* setAddrRange#

The implementations of copyBytes, moveBytes, and fillBytes
in base:Foreign.Marshal.Utils now use these new primops,
which can cause us to work a bit harder generating code for them,
resulting in the metric increase in T21839c observed by CI on
some architectures.  But in exchange, we get better code!

Metric Increase:
    T21839c

- - - - -
f7da530c by Matthew Craven at 2023-04-04T01:04:10-04:00
StgToCmm: Upgrade -fcheck-prim-bounds behavior

Fixes #21054. Additionally, we can now check for range overlap
when generating Cmm for primops that use memcpy internally.

- - - - -
cd00e321 by sheaf at 2023-04-04T01:04:50-04:00
Relax assertion in varToRecFieldOcc

When using Template Haskell, it is possible to re-parent a field OccName
belonging to one data constructor to another data constructor. The
lsp-types package did this in order to "extend" a data constructor
with additional fields.

This ran into an assertion in 'varToRecFieldOcc'. This assertion
can simply be relaxed, as the resulting splices are perfectly sound.

Fixes #23220

- - - - -
eed0d930 by Sylvain Henry at 2023-04-04T11:09:15-04:00
GHCi.RemoteTypes: fix doc and avoid unsafeCoerce (#23201)

- - - - -
071139c3 by Ryan Scott at 2023-04-04T11:09:51-04:00
Make INLINE pragmas for pattern synonyms work with TH

Previously, the code for converting `INLINE <name>` pragmas from TH splices
used `vNameN`, which assumed that `<name>` must live in the variable namespace.
Pattern synonyms, on the other hand, live in the constructor namespace. I've
fixed the issue by switching to `vcNameN` instead, which works for both the
variable and constructor namespaces.

Fixes #23203.

- - - - -
7c16f3be by Krzysztof Gogolewski at 2023-04-04T17:13:00-04:00
Fix unification with oversaturated type families

unify_ty was incorrectly saying that F x y ~ T x are surely apart,
where F x y is an oversaturated type family and T x is a tyconapp.
As a result, the simplifier dropped a live case alternative (#23134).

- - - - -
c165f079 by sheaf at 2023-04-04T17:13:40-04:00
Add testcase for #23192

This issue around solving of constraints arising from superclass
expansion using other constraints also borned from superclass expansion
was the topic of commit aed1974e. That commit made sure we don't emit
a "redundant constraint" warning in a situation in which removing the
constraint would cause errors.

Fixes #23192

- - - - -
d1bb16ed by Ben Gamari at 2023-04-06T03:40:45-04:00
nonmoving: Disable slop-zeroing

As noted in #23170, the nonmoving GC can race with a mutator zeroing the
slop of an updated thunk (in much the same way that two mutators would
race). Consequently, we must disable slop-zeroing when the nonmoving GC
is in use.

Closes #23170

- - - - -
04b80850 by Brandon Chinn at 2023-04-06T03:41:21-04:00
Fix reverse flag for -Wunsupported-llvm-version
- - - - -
0c990e13 by Pierre Le Marre at 2023-04-06T10:16:29+00:00
Add release note for GHC.Unicode refactor in base-4.18.

Also merge CLC proposal 130 in base-4.19 with CLC proposal 59 in
base-4.18 and add proper release date.

- - - - -
cbbfb283 by Alex Dixon at 2023-04-07T18:27:45-04:00
Improve documentation for ($) (#22963)

- - - - -
5193c2b0 by Alex Dixon at 2023-04-07T18:27:45-04:00
Remove trailing whitespace from ($) commentary

- - - - -
b384523b by Sebastian Graf at 2023-04-07T18:27:45-04:00
Adjust wording wrt representation polymorphism of ($)
- - - - -
6a788f0a by Torsten Schmits at 2023-04-07T22:29:28-04:00
Add structured error messages for GHC.Tc.TyCl.Utils

Tracking ticket: #20117

MR: !10251

This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.

- - - - -
3ba77b36 by sheaf at 2023-04-07T22:30:07-04:00
Renamer: don't call addUsedGRE on an exact Name

When looking up a record field in GHC.Rename.Env.lookupRecFieldOcc,
we could end up calling addUsedGRE on an exact Name, which would then
lead to a panic in the bestImport function: it would be incapable of
processing a GRE which is not local but also not brought into scope
by any imports (as it is referred to by its unique instead).

Fixes #23240

- - - - -
bc4795d2 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00
Add support for -debug in the testsuite

Confusingly, GhcDebugged referred to GhcDebugAssertions.

- - - - -
b7474b57 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00
Add missing cases in -Di prettyprinter

Fixes #23142

- - - - -
6c392616 by Cheng Shao at 2023-04-11T19:25:31-04:00
compiler: make WasmCodeGenM an instance of MonadUnique

- - - - -
05d26a65 by Cheng Shao at 2023-04-11T19:25:31-04:00
compiler: apply cmm node-splitting for wasm backend

This patch applies cmm node-splitting for wasm32 NCG, which is
required when handling irreducible CFGs. Fixes #23237.

- - - - -
f1892cc0 by Bodigrim at 2023-04-11T19:26:09-04:00
Set base 'maintainer' field to CLC

- - - - -
ecf22da3 by Simon Peyton Jones at 2023-04-11T19:26:45-04:00
Clarify a couple of Notes about 'nospec'

- - - - -
ebd8918b by Oleg Grenrus at 2023-04-12T12:32:57-04:00
Allow generation of TTH syntax with TH

In other words allow generation of typed splices and brackets with
Untyped Template Haskell.

That is useful in cases where a library is build with TTH in mind,
but we still want to generate some auxiliary declarations,
where TTH cannot help us, but untyped TH can.
Such example is e.g. `staged-sop` which works with TTH,
but we would like to derive `Generic` declarations with TH.

An alternative approach is to use `unsafeCodeCoerce`, but then the
derived `Generic` instances would be type-checked only at use sites,
i.e. much later. Also `-ddump-splices` output is quite ugly:
user-written instances would use TTH brackets, not `unsafeCodeCoerce`.

This commit doesn't allow generating of untyped template splices
and brackets with untyped TH, as I don't know why one would want to do
that (instead of merging the splices, e.g.)

- - - - -
690d0225 by Rodrigo Mesquita at 2023-04-12T12:33:33-04:00
Add regression test for #23229

- - - - -
59321879 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Add quotRem rules (#22152)

  case quotRemInt# x y of
     (# q, _ #) -> body
  ====>
   case quotInt# x y of
     q -> body

  case quotRemInt# x y of
     (# _, r #) -> body
  ====>
   case remInt# x y of
     r -> body

- - - - -
4dd02122 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Add quot folding rule (#22152)

   (x / l1) / l2
   l1 and l2 /= 0
   l1*l2 doesn't overflow
   ==> x / (l1 * l2)

- - - - -
1148ac72 by Sylvain Henry at 2023-04-13T08:50:33-04:00
Make Int64/Word64 division ok for speculation too.

Only when the divisor is definitely non-zero.

- - - - -
8af401cc by Sylvain Henry at 2023-04-13T08:50:33-04:00
Make WordQuotRem2Op ok-for-speculation too

- - - - -
27d2978e by Josh Meredith at 2023-04-13T08:51:09-04:00
Base/JS: GHC.JS.Foreign.Callback module (issue 23126)

* Add the Callback module for "exporting" Haskell functions
to be available to plain JavaScript code

* Fix some primitives defined in GHC.JS.Prim

* Add a JavaScript section to the user guide with instructions
on how to use the JavaScript FFI, building up to using Callbacks
to interact with the browser

* Add tests for the JavaScript FFI and Callbacks

- - - - -
a34aa8da by Adam Sandberg Ericsson at 2023-04-14T04:17:52-04:00
rts: improve memory ordering and add some comments in the StablePtr implementation

- - - - -
d7a768a4 by Matthew Pickering at 2023-04-14T04:18:28-04:00
docs: Generate docs/index.html with version number

* Generate docs/index.html to include the version of the ghc library

* This also fixes the packageVersions interpolations which were
  - Missing an interpolation for `LIBRARY_ghc_VERSION`
  - Double quoting the version so that "9.7" was being inserted.

Fixes #23121

- - - - -
d48fbfea by Simon Peyton Jones at 2023-04-14T04:19:05-04:00
Stop if type constructors have kind errors

Otherwise we get knock-on errors, such as #23252.

This makes GHC fail a bit sooner, and I have not attempted to add
recovery code, to add a fake TyCon place of the erroneous one,
in an attempt to get more type errors in one pass.  We could
do that (perhaps) if there was a call for it.

- - - - -
2371d6b2 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Major refactor in the handling of equality constraints

This MR substantially refactors the way in which the constraint
solver deals with equality constraints.  The big thing is:

* Intead of a pipeline in which we /first/ canonicalise and /then/
  interact (the latter including performing unification) the two steps
  are more closely integreated into one.  That avoids the current
  rather indirect communication between the two steps.

The proximate cause for this refactoring is fixing #22194, which involve
solving   [W] alpha[2] ~ Maybe (F beta[4])
by doing this:
          alpha[2] := Maybe delta[2]
          [W] delta[2] ~ F beta[4]
That is, we don't promote beta[4]!  This is very like introducing a cycle
breaker, and was very awkward to do before, but now it is all nice.
See GHC.Tc.Utils.Unify Note [Promotion and level-checking] and
Note [Family applications in canonical constraints].

The big change is this:

* Several canonicalisation checks (occurs-check, cycle-breaking,
  checking for concreteness) are combined into one new function:
     GHC.Tc.Utils.Unify.checkTyEqRhs

  This function is controlled by `TyEqFlags`, which says what to do
  for foralls, type families etc.

* `canEqCanLHSFinish` now sees if unification is possible, and if so,
  actually does it: see `canEqCanLHSFinish_try_unification`.

There are loads of smaller changes:

* The on-the-fly unifier `GHC.Tc.Utils.Unify.unifyType` has a
  cheap-and-cheerful version of `checkTyEqRhs`, called
  `simpleUnifyCheck`.  If `simpleUnifyCheck` succeeds, it can unify,
  otherwise it defers by emitting a constraint. This is simpler than
  before.

* I simplified the swapping code in `GHC.Tc.Solver.Equality.canEqCanLHS`.
  Especially the nasty stuff involving `swap_for_occurs` and
  `canEqTyVarFunEq`.  Much nicer now.  See
      Note [Orienting TyVarLHS/TyFamLHS]
      Note [Orienting TyFamLHS/TyFamLHS]

* Added `cteSkolemOccurs`, `cteConcrete`, and `cteCoercionHole` to the
  problems that can be discovered by `checkTyEqRhs`.

* I fixed #23199 `pickQuantifiablePreds`, which actually allows GHC to
  to accept both cases in #22194 rather than rejecting both.

Yet smaller:

* Added a `synIsConcrete` flag to `SynonymTyCon` (alongside `synIsFamFree`)
  to reduce the need for synonym expansion when checking concreteness.
  Use it in `isConcreteType`.

* Renamed `isConcrete` to `isConcreteType`

* Defined `GHC.Core.TyCo.FVs.isInjectiveInType` as a more efficient
  way to find if a particular type variable is used injectively than
  finding all the injective variables.  It is called in
  `GHC.Tc.Utils.Unify.definitely_poly`, which in turn is used quite a
  lot.

* Moved `rewriterView` to `GHC.Core.Type`, so we can use it from the
  constraint solver.

Fixes #22194, #23199

Compile times decrease by an average of 0.1%; but there is a 7.4%
drop in compiler allocation on T15703.

Metric Decrease:
    T15703

- - - - -
99b2734b by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Add some documentation about redundant constraints

- - - - -
3f2d0eb8 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Improve partial signatures

This MR fixes #23223. The changes are in two places:

* GHC.Tc.Bind.checkMonomorphismRestriction
  See the new `Note [When the MR applies]`
  We now no longer stupidly attempt to apply the MR when the user
  specifies a context, e.g.   f :: Eq a => _ -> _

* GHC.Tc.Solver.decideQuantification
  See rewritten `Note [Constraints in partial type signatures]`

Fixing this bug apparently breaks three tests:

* partial-sigs/should_compile/T11192
* partial-sigs/should_fail/Defaulting1MROff
* partial-sigs/should_fail/T11122

However they are all symptoms of #23232, so I'm marking them as
expect_broken(23232).

I feel happy about this MR. Nice.

- - - - -
23e2a8a0 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00
Make approximateWC a bit cleverer

This MR fixes #23224: making approximateWC more clever

See the long `Note [ApproximateWC]` in GHC.Tc.Solver

All this is delicate and ad-hoc -- but it /has/ to be: we are
talking about inferring a type for a binding in the presence of
GADTs, type families and whatnot: known difficult territory.
We just try as hard as we can.

- - - - -
2c040246 by Matthew Pickering at 2023-04-15T00:57:14-04:00
docs: Update template-haskell docs to use Code Q a rather than Q (TExp a)

Since GHC Proposal #195, the type of [|| ... ||] has been Code Q a
rather than Q (TExp a). The documentation in the `template-haskell`
library wasn't updated to reflect this change.

Fixes #23148

- - - - -
0da18eb7 by Krzysztof Gogolewski at 2023-04-15T14:35:53+02:00
Show an error when we cannot default a concrete tyvar

Fixes #23153

- - - - -
bad2f8b8 by sheaf at 2023-04-15T15:14:36+02:00
Handle ConcreteTvs in inferResultToType

inferResultToType was discarding the ir_frr information, which meant
some metavariables ended up being MetaTvs instead of ConcreteTvs.

This function now creates new ConcreteTvs as necessary, instead of
always creating MetaTvs.

Fixes #23154

- - - - -
3b0ea480 by Simon Peyton Jones at 2023-04-16T18:12:20-04:00
Transfer DFunId_ness onto specialised bindings

Whether a binding is a DFunId or not has consequences for the `-fdicts-strict`
flag, essentially if we are doing demand analysis for a DFunId then `-fdicts-strict` does
not apply because the constraint solver can create recursive groups of dictionaries.

In #22549 this was fixed for the "normal" case, see
Note [Do not strictify the argument dictionaries of a dfun].
However the loop still existed if the DFunId was being specialised.

The problem was that the specialiser would specialise a DFunId and
turn it into a VanillaId and so the demand analyser didn't know to
apply special treatment to the binding anymore and the whole recursive
group was optimised to bottom.

The solution is to transfer over the DFunId-ness of the binding in the specialiser so
that the demand analyser knows not to apply the `-fstrict-dicts`.

Fixes #22549

- - - - -
a1371ebb by Oleg Grenrus at 2023-04-16T18:12:59-04:00
Add import lists to few GHC.Driver.Session imports

Related to https://gitlab.haskell.org/ghc/ghc/-/issues/23261.
There are a lot of GHC.Driver.Session which only use DynFlags,
but not the parsing code.

- - - - -
51479ceb by Matthew Pickering at 2023-04-17T08:08:48-04:00
Account for special GHC.Prim import in warnUnusedPackages

The GHC.Prim import is treated quite specially primarily because there
isn't an interface file for GHC.Prim. Therefore we record separately in
the ModSummary if it's imported or not so we don't go looking for it.

This logic hasn't made it's way to `-Wunused-packages` so if you
imported GHC.Prim then the warning would complain you didn't use
`-package ghc-prim`.

Fixes #23212

- - - - -
1532a8b2 by Simon Peyton Jones at 2023-04-17T08:09:24-04:00
Add regression test for #23199

- - - - -
0158c5f1 by Ryan Scott at 2023-04-17T18:43:27-04:00
validDerivPred: Reject exotic constraints in IrredPreds

This brings the `IrredPred` case in sync with the treatment of `ClassPred`s as
described in `Note [Valid 'deriving' predicate]` in `GHC.Tc.Validity`. Namely,
we should reject `IrredPred`s that are inferred from `deriving` clauses whose
arguments contain other type constructors, as described in `(VD2) Reject exotic
constraints` of that Note.  This has the nice property that `deriving` clauses
whose inferred instance context mention `TypeError` will now emit the type
error in the resulting error message, which better matches existing intuitions
about how `TypeError` should work.

While I was in town, I noticed that much of `Note [Valid 'deriving' predicate]`
was duplicated in a separate `Note [Exotic derived instance contexts]` in
`GHC.Tc.Deriv.Infer`. I decided to fold the latter Note into the former so that
there is a single authority on describing the conditions under which an
inferred `deriving` constraint can be considered valid.

This changes the behavior of `deriving` in a way that existing code might
break, so I have made a mention of this in the GHC User's Guide. It seems very,
very unlikely that much code is relying on this strange behavior, however, and
even if there is, there is a clear, backwards-compatible migration path using
`StandaloneDeriving`.

Fixes #22696.

- - - - -
10364818 by Krzysztof Gogolewski at 2023-04-17T18:44:03-04:00
Misc cleanup

- Use dedicated list functions
- Make cloneBndrs and cloneRecIdBndrs monadic
- Fix invalid haddock comments in libraries/base

- - - - -
e85f1b7b by Ben Gamari at 2023-04-18T07:29:04-04:00
rts/IPE: Fix unused mutex warning

- - - - -
05a4aa30 by Ubuntu at 2023-04-18T07:36:05-04:00
rts: C++ fixes

- - - - -
6a2324f8 by Ben Gamari at 2023-04-18T07:36:08-04:00
compiler: Style fixes

- - - - -
9546df64 by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Fix data race in threadPaused

This only affects an assertion in the debug RTS, but it's a data race
nevertheless.

- - - - -
0276f6ee by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Silence spurious data races in ticky counters

Previously we would use non-atomic accesses when bumping ticky counters,
which would result in spurious data race reports from ThreadSanitizer
when the threaded RTS was in use.

- - - - -
63ac3972 by Ben Gamari at 2023-04-18T07:36:08-04:00
Improve TSAN documentation

- - - - -
840fbd9e by Ben Gamari at 2023-04-18T07:36:08-04:00
compiler/cmm: Ensure that dump output has proc name

Previously dump output from the early Cmm passes would not be labelled
with a proc label.

- - - - -
fe417254 by Ben Gamari at 2023-04-18T07:36:08-04:00
cmm: Introduce MO_RelaxedRead

In hand-written Cmm it can sometimes be necessary to atomically load
from memory deep within an expression (e.g. see the `CHECK_GC` macro).
This MachOp provides a convenient way to do so without breaking the
expression into multiple statements.

- - - - -
61512488 by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Fix various data races

- - - - -
1c6daf8b by Ben Gamari at 2023-04-18T07:36:08-04:00
base: use atomic write when updating timer manager

- - - - -
7ead0355 by Ben Gamari at 2023-04-18T07:36:08-04:00
Use relaxed atomics to manipulate TSO status fields

- - - - -
33cfd077 by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Drop unnecessary atomic

- - - - -
927b92fd by Ben Gamari at 2023-04-18T07:36:08-04:00
codeGen: Ensure that TSAN is aware of writeArray# write barriers

- - - - -
6c7d6088 by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Fix synchronization on thread blocking state

- - - - -
c1ef39b1 by Ben Gamari at 2023-04-18T07:36:08-04:00
rts: Relaxed load MutVar info table

- - - - -
45a26ba4 by Ben Gamari at 2023-04-18T07:36:08-04:00
More principled treatment of acquire fences

- - - - -
13684dd5 by Ben Gamari at 2023-04-18T07:36:08-04:00
Wordsmith Note

- - - - -
28f40d26 by Ben Gamari at 2023-04-18T07:36:08-04:00
Use relaxed accesses in ticky bumping

- - - - -
2983b735 by Ben Gamari at 2023-04-18T07:36:08-04:00
Fix thunk update ordering

Previously we attempted to ensure soundness of concurrent thunk update
by synchronizing on the access of the thunk's info table pointer field.
This was believed to be sufficient since the indirectee (which may
expose a closure allocated by another core) would not be examined
until the info table pointer update is complete.

However, it turns out that this can result in data races in the presence
of multiple threads racing a update a single thunk. For instance,
consider this interleaving under the old scheme:

            Thread A                             Thread B
            ---------                            ---------
    t=0     Enter t
      1     Push update frame
      2     Begin evaluation

      4     Pause thread
      5     t.indirectee=tso
      6     Release t.info=BLACKHOLE

      7     ... (e.g. GC)

      8     Resume thread
      9     Finish evaluation
      10    Relaxed t.indirectee=x

      11                                         Load t.info
      12                                         Acquire fence
      13                                         Inspect t.indirectee

      14    Release t.info=BLACKHOLE

Here Thread A enters thunk `t` but is soon paused, resulting in `t`
being lazily blackholed at t=6. Then, at t=10 Thread A finishes
evaluation and updates `t.indirectee` with a relaxed store.

Meanwhile, Thread B enters the blackhole. Under the old scheme this
would introduce an acquire-fence but this would only synchronize with
Thread A at t=6. Consequently, the result of the evaluation, `x`, is not
visible to Thread B, introducing a data race.

We fix this by treating the `indirectee` field as we do all other
mutable fields. This means we must always access this field with
acquire-loads and release-stores.

See #23185.

- - - - -
7b4d62f8 by Ben Gamari at 2023-04-18T07:36:09-04:00
Things

- - - - -
06afb9fe by Ben Gamari at 2023-04-18T07:36:09-04:00
rts: Relax info pointer stores

- - - - -
9c370dd9 by Ubuntu at 2023-04-18T07:36:09-04:00
Work around #22451

- - - - -
6507ac82 by Ubuntu at 2023-04-18T07:36:09-04:00
llvm: Sequential consistency

- - - - -
6ab3d2cd by Ubuntu at 2023-04-18T07:36:09-04:00
rts: sequential consistency

- - - - -
8086060f by Ubuntu at 2023-04-18T07:36:09-04:00
ghc-prim: Use C11 atomics

- - - - -
1a7fc46a by Ubuntu at 2023-04-18T07:36:09-04:00
Fix thunk update further

- - - - -
36ab795a by Ubuntu at 2023-04-18T07:36:09-04:00
Add acquire fence in WHITEHOLE

- - - - -
7f783c90 by Ubuntu at 2023-04-18T07:36:09-04:00
whitespace

- - - - -
57907004 by Ubuntu at 2023-04-18T07:36:09-04:00
Note

- - - - -
e1e63aed by Ben Gamari at 2023-04-18T07:36:09-04:00
STM: relaxed

- - - - -
fecc19fb by Ubuntu at 2023-04-18T07:36:09-04:00
Run script

- - - - -
b32406bf by Ubuntu at 2023-04-18T07:36:09-04:00
Refine run script

- - - - -
ce510a0e by Ubuntu at 2023-04-18T07:36:09-04:00
run

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94ca254d by Ubuntu at 2023-04-18T07:36:09-04:00
Disable selector optimisation

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b3548160 by Ben Gamari at 2023-04-18T07:36:09-04:00
CheckGC

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f5f18a35 by Ubuntu at 2023-04-18T07:36:09-04:00
check-gc: fix large objects

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d2a0aa5a by Ubuntu at 2023-04-18T07:36:09-04:00
check-gc on GC

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1899ed50 by Ben Gamari at 2023-04-18T07:40:24-04:00
ACQUIRE_FENCE

- - - - -


30 changed files:

- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/gen_ci.hs
- .gitlab/generate_job_metadata
- .gitlab/generate_jobs
- .gitlab/jobs.yaml
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/Uniques.hs-boot
- compiler/GHC/Builtin/Utils.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Info.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToAsm/Wasm/Utils.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/177d368192b501e9ba016996e5e88f1bc3b2faf2...1899ed5070d546653b9b4ce8173cc43cfa48b221

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/177d368192b501e9ba016996e5e88f1bc3b2faf2...1899ed5070d546653b9b4ce8173cc43cfa48b221
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