[Git][ghc/ghc][wip/supersven/imulMayOflo_x86] 118 commits: Propagate breakpoint information when inlining across modules

[Sven Tennie (@supersven)]

Sven Tennie pushed to branch wip/supersven/imulMayOflo_x86 at Glasgow Haskell Compiler / GHC


Commits:
c59fbb0b by Torsten Schmits at 2023-06-26T19:34:20+02:00
Propagate breakpoint information when inlining across modules

Tracking ticket: #23394

MR: !10448

* Add constructor `IfaceBreakpoint` to `IfaceTickish`
* Store breakpoint data in interface files
* Store `BreakArray` for the breakpoint's module, not the current module, in BCOs
* Store module name in BCOs instead of `Unique`, since the `Unique` from an `Iface` doesn't match the modules in GHCi's
  state
* Allocate module name in `ModBreaks`, like `BreakArray`
* Lookup breakpoint by module name in GHCi
* Skip creating breakpoint instructions when no `ModBreaks` are available, rather than injecting `ModBreaks` in the
  linker when breakpoints are enabled, and panicking when `ModBreaks` is missing

- - - - -
6f904808 by Greg Steuck at 2023-06-27T16:53:07-04:00
Remove undefined FP_PROG_LD_BUILD_ID from configure.ac's

- - - - -
e89aa072 by Andrei Borzenkov at 2023-06-27T16:53:44-04:00
Remove arity inference in type declarations (#23514)

Arity inference in type declarations was introduced
as a workaround for the lack of @k-binders.

They were added in 4aea0a72040, so I simplified all
of this by simply removing arity inference altogether.

This is part of GHC Proposal #425 "Invisible binders in type
declarations".

- - - - -
459dee1b by Torsten Schmits at 2023-06-27T16:54:20-04:00
Relax defaulting of RuntimeRep/Levity when printing

Fixes #16468

MR: !10702

Only default RuntimeRep to LiftedRep when variables are bound by the toplevel forall

- - - - -
151f8f18 by Torsten Schmits at 2023-06-27T16:54:57-04:00
Remove duplicate link label in linear types docs

- - - - -
ecdc4353 by Rodrigo Mesquita at 2023-06-28T12:24:57-04:00
Stop configuring unused Ld command in `settings`

GHC has no direct dependence on the linker. Rather, we depend upon the C
compiler for linking and an object-merging program (which is typically
`ld`) for production of GHCi objects and merging of C stubs into final
object files.

Despite this, for historical reasons we still recorded information about
the linker into `settings`. Remove these entries from `settings`,
`hadrian/cfg/system.config`, as well as the `configure` logic
responsible for this information.

Closes #23566.

- - - - -
bf9ec3e4 by Bryan Richter at 2023-06-28T12:25:33-04:00
Remove extraneous debug output

- - - - -
7eb68dd6 by Bryan Richter at 2023-06-28T12:25:33-04:00
Work with unset vars in -e mode

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49c27936 by Bryan Richter at 2023-06-28T12:25:33-04:00
Pass positional arguments in their positions

By quoting $cmd, the default "bash -i" is a single argument to run, and
no file named "bash -i" actually exists to be run.

- - - - -
887dc4fc by Bryan Richter at 2023-06-28T12:25:33-04:00
Handle unset value in -e context

- - - - -
5ffc7d7b by Rodrigo Mesquita at 2023-06-28T21:07:36-04:00
Configure CPP into settings

There is a distinction to be made between the Haskell Preprocessor and
the C preprocessor. The former is used to preprocess Haskell files,
while the latter is used in C preprocessing such as Cmm files.

In practice, they are both the same program (usually the C compiler) but
invoked with different flags.

Previously we would, at configure time, configure the haskell
preprocessor and save the configuration in the settings file, but,
instead of doing the same for CPP, we had hardcoded in GHC that the CPP
program was either `cc -E` or `cpp`.

This commit fixes that asymmetry by also configuring CPP at configure
time, and tries to make more explicit the difference between HsCpp and
Cpp (see Note [Preprocessing invocations]).

Note that we don't use the standard CPP and CPPFLAGS to configure Cpp,
but instead use the non-standard --with-cpp and --with-cpp-flags.
The reason is that autoconf sets CPP to "$CC -E", whereas we expect the
CPP command to be configured as a standalone executable rather than a
command. These are symmetrical with --with-hs-cpp and
--with-hs-cpp-flags.

Cleanup: Hadrian no longer needs to pass the CPP configuration for CPP
         to be C99 compatible through -optP, since we now configure that
         into settings.

Closes #23422

- - - - -
5efa9ca5 by Ben Gamari at 2023-06-28T21:08:13-04:00
hadrian: Always canonicalize topDirectory

Hadrian's `topDirectory` is intended to provide an absolute path to the
root of the GHC tree. However, if the tree is reached via a symlink this

One question here is whether the `canonicalizePath` call is expensive
enough to warrant caching. In a quick microbenchmark I observed that
`canonicalizePath "."` takes around 10us per call; this seems
sufficiently low not to worry.

Alternatively, another approach here would have been to rather move the
canonicalization into `m4/fp_find_root.m4`. This would have avoided
repeated canonicalization but sadly path canonicalization is a hard
problem in POSIX shell.

Addresses #22451.

- - - - -
b3e1436f by aadaa_fgtaa at 2023-06-28T21:08:53-04:00
Optimise ELF linker (#23464)

- cache last elements of `relTable`, `relaTable` and `symbolTables` in `ocInit_ELF`
- cache shndx table in ObjectCode
- run `checkProddableBlock` only with debug rts

- - - - -
30525b00 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Introduce MO_{ACQUIRE,RELEASE}_FENCE

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b787e259 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Drop MO_WriteBarrier

rts: Drop write_barrier

- - - - -
7550b4a5 by Ben Gamari at 2023-06-28T21:09:30-04:00
rts: Drop load_store_barrier()

This is no longer used.

- - - - -
d5f2875e by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop last instances of prim_{write,read}_barrier

- - - - -
965ac2ba by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Eliminate remaining uses of load_load_barrier

- - - - -
0fc5cb97 by Sven Tennie at 2023-06-28T21:09:31-04:00
compiler: Drop MO_ReadBarrier

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7a7d326c by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop load_load_barrier

This is no longer used.

- - - - -
9f63da66 by Sven Tennie at 2023-06-28T21:09:31-04:00
Delete write_barrier function

- - - - -
bb0ed354 by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Make collectFreshWeakPtrs definition a prototype

x86-64/Darwin's toolchain inexplicably warns that collectFreshWeakPtrs
needs to be a prototype.

- - - - -
ef81a1eb by Sven Tennie at 2023-06-28T21:10:08-04:00
Fix number of free double regs

D1..D4 are defined for aarch64 and thus not free.

- - - - -
c335fb7c by Ryan Scott at 2023-06-28T21:10:44-04:00
Fix typechecking of promoted empty lists

The `'[]` case in `tc_infer_hs_type` is smart enough to handle arity-0 uses of
`'[]` (see the newly added `T23543` test case for an example), but the `'[]`
case in `tc_hs_type` was not. We fix this by changing the `tc_hs_type` case to
invoke `tc_infer_hs_type`, as prescribed in `Note [Future-proofing the type
checker]`.

There are some benign changes to test cases' expected output due to the new
code path using `forall a. [a]` as the kind of `'[]` rather than `[k]`.

Fixes #23543.

- - - - -
fcf310e7 by Rodrigo Mesquita at 2023-06-28T21:11:21-04:00
Configure MergeObjs supports response files rather than Ld

The previous configuration script to test whether Ld supported response
files was
* Incorrect (see #23542)
* Used, in practice, to check if the *merge objects tool* supported
  response files.

This commit modifies the macro to run the merge objects tool (rather
than Ld), using a response file, and checking the result with $NM

Fixes #23542

- - - - -
78b2f3cc by Sylvain Henry at 2023-06-28T21:12:02-04:00
JS: fix JS stack printing (#23565)

- - - - -
9f01d14b by Matthew Pickering at 2023-06-29T04:13:41-04:00
Add -fpolymorphic-specialisation flag (off by default at all optimisation levels)

Polymorphic specialisation has led to a number of hard to diagnose
incorrect runtime result bugs (see #23469, #23109, #21229, #23445) so
this commit introduces a flag `-fpolymorhphic-specialisation` which
allows users to turn on this experimental optimisation if they are
willing to buy into things going very wrong.

Ticket #23469

- - - - -
b1e611d5 by Ben Gamari at 2023-06-29T04:14:17-04:00
Rip out runtime linker/compiler checks

We used to choose flags to pass to the toolchain at runtime based on the
platform running GHC, and in this commit we drop all of those runtime
linker checks

Ultimately, this represents a change in policy: We no longer adapt at
runtime to the toolchain being used, but rather make final decisions
about the toolchain used at /configure time/
(we have deleted Note [Run-time linker info] altogether!).

This works towards the goal of having all toolchain configuration logic
living in the same place, which facilities the work towards a
runtime-retargetable GHC (see #19877).

As of this commit, the runtime linker/compiler logic was moved to
autoconf, but soon it, and the rest of the existing toolchain
configuration logic, will live in the standalone ghc-toolchain program
(see !9263)

In particular, what used to be done at runtime is now as follows:
* The flags -Wl,--no-as-needed for needed shared libs are configured
  into settings
* The flag -fstack-check is configured into settings
* The check for broken tables-next-to-code was outdated
* We use the configured c compiler by default as the assembler program
* We drop `asmOpts` because we already configure -Qunused-arguments flag
  into settings (see !10589)

Fixes #23562

Co-author: Rodrigo Mesquita (@alt-romes)

- - - - -
8b35e8ca by Ben Gamari at 2023-06-29T18:46:12-04:00
Define FFI_GO_CLOSURES

The libffi shipped with Apple's XCode toolchain does not contain a
definition of the FFI_GO_CLOSURES macro, despite containing references
to said macro. Work around this by defining the macro, following the
model of a similar workaround in OpenJDK [1].

[1] https://github.com/openjdk/jdk17u-dev/pull/741/files

- - - - -
d7ef1704 by Ben Gamari at 2023-06-29T18:46:12-04:00
base: Fix incorrect CPP guard

This was guarded on `darwin_HOST_OS` instead of `defined(darwin_HOST_OS)`.

- - - - -
7c7d1f66 by Ben Gamari at 2023-06-29T18:46:48-04:00
rts/Trace: Ensure that debugTrace arguments are used

As debugTrace is a macro we must take care to ensure that
the fact is clear to the compiler lest we see warnings.

- - - - -
cb92051e by Ben Gamari at 2023-06-29T18:46:48-04:00
rts: Various warnings fixes

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dec81dd1 by Ben Gamari at 2023-06-29T18:46:48-04:00
hadrian: Ignore warnings in unix and semaphore-compat

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d7f6448a by Matthew Pickering at 2023-06-30T12:38:43-04:00
hadrian: Fix dependencies of docs:* rule

For the docs:* rule we need to actually build the package rather than
just the haddocks for the dependent packages. Therefore we depend on the
.conf files of the packages we are trying to build documentation for as
well as the .haddock files.

Fixes #23472

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cec90389 by sheaf at 2023-06-30T12:39:27-04:00
Add tests for #22106

Fixes #22106

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083794b1 by Torsten Schmits at 2023-07-03T03:27:27-04:00
Add -fbreak-points to control breakpoint insertion

Rather than statically enabling breakpoints only for the interpreter,
this adds a new flag.

Tracking ticket: #23057

MR: !10466

- - - - -
fd8c5769 by Ben Gamari at 2023-07-03T03:28:04-04:00
rts: Ensure that pinned allocations respect block size

Previously, it was possible for pinned, aligned allocation requests to
allocate beyond the end of the pinned accumulator block. Specifically,
we failed to account for the padding needed to achieve the requested
alignment in the "large object" check. With large alignment requests,
this can result in the allocator using the capability's pinned object
accumulator block to service a request which is larger than
`PINNED_EMPTY_SIZE`.

To fix this we reorganize `allocatePinned` to consistently account for
the alignment padding in all large object checks. This is a bit subtle
as we must handle the case of a small allocation request filling the
accumulator block, as well as large requests.

Fixes #23400.

- - - - -
98185d52 by Ben Gamari at 2023-07-03T03:28:05-04:00
testsuite: Add test for #23400

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4aac0540 by Ben Gamari at 2023-07-03T03:28:42-04:00
ghc-heap: Support for BLOCKING_QUEUE closures

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03f941f4 by Ben Bellick at 2023-07-03T03:29:29-04:00
Add some structured diagnostics in Tc/Validity.hs

This addresses the work of ticket #20118
Created the following constructors for TcRnMessage
 - TcRnInaccessibleCoAxBranch
 - TcRnPatersonCondFailure

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6074cc3c by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Add failing test case for #23492

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356a2692 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Use generated src span for catch-all case of record selector functions

This fixes #23492. The problem was that we used the real source span
of the field declaration for the generated catch-all case in the
selector function, in particular in the generated call to
`recSelError`, which meant it was included in the HIE output. Using
`generatedSrcSpan` instead means that it is not included.

- - - - -
3efe7f39 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Introduce genLHsApp and genLHsLit helpers in GHC.Rename.Utils

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dd782343 by Moisés Ackerman at 2023-07-03T03:30:13-04:00
Construct catch-all default case using helpers

GHC.Rename.Utils concrete helpers instead of wrapGenSpan + HS AST constructors

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0e09c38e by Ryan Hendrickson at 2023-07-03T03:30:56-04:00
Add regression test for #23549

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32741743 by Alexis King at 2023-07-03T03:31:36-04:00
perf tests: Increase default stack size for MultiLayerModules

An unhelpfully small stack size appears to have been the real culprit
behind the metric fluctuations in #19293. Debugging metric decreases
triggered by !10729 helped to finally identify the problem.

Metric Decrease:
    MultiLayerModules
    MultiLayerModulesTH_Make
    T13701
    T14697

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82ac6bf1 by Bryan Richter at 2023-07-03T03:32:15-04:00
Add missing void prototypes to rts functions

See #23561.

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6078b429 by Ben Gamari at 2023-07-03T03:32:51-04:00
gitlab-ci: Refactor compilation of gen_ci

Flakify and document it, making it far less sensitive to the build
environment.

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aa2db0ae by Ben Gamari at 2023-07-03T03:33:29-04:00
testsuite: Update documentation
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924a2362 by Gregory Gerasev at 2023-07-03T03:34:10-04:00
Better error for data deriving of type synonym/family. Closes #23522

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4457da2a by Dave Barton at 2023-07-03T03:34:51-04:00
Fix some broken links and typos

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de5830d0 by Ben Gamari at 2023-07-04T22:03:59-04:00
configure: Rip out Solaris dyld check

Solaris 11 was released over a decade ago and, moreover, I doubt we have
any Solaris users

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59c5fe1d by doyougnu at 2023-07-04T22:04:56-04:00
CI: add JS release and debug builds, regen CI jobs

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679bbc97 by Vladislav Zavialov at 2023-07-04T22:05:32-04:00
testsuite: Do not require CUSKs

Numerous tests make use of CUSKs (complete user-supplied kinds),
a legacy feature scheduled for deprecation. In order to proceed
with the said deprecation, the tests have been updated to use SAKS
instead (standalone kind signatures).

This also allows us to remove the Haskell2010 language pragmas that
were added in 115cd3c85a8 to work around the lack of CUSKs in GHC2021.

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945d3599 by Ben Gamari at 2023-07-04T22:06:08-04:00
gitlab: Drop backport-for-8.8 MR template

Its usefulness has long passed.
- - - - -
66c721d3 by Alan Zimmerman at 2023-07-04T22:06:44-04:00
EPA: Simplify GHC/Parser.y comb2

Use the HasLoc instance from Ast.hs to allow comb2 to work with
anything with a SrcSpan

This gets rid of the custom comb2A, comb2Al, comb2N functions, and
removes various reLoc calls.

- - - - -
2be99b7e by Matthew Pickering at 2023-07-04T22:07:21-04:00
Fix deprecation warning when deprecated identifier is from another module

A stray 'Just' was being printed in the deprecation message.

Fixes #23573

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46c9bcd6 by Ben Gamari at 2023-07-04T22:07:58-04:00
rts: Don't rely on initializers for sigaction_t

As noted in #23577, CentOS's ancient toolchain throws spurious
missing-field-initializer warnings.

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ec55035f by Ben Gamari at 2023-07-04T22:07:58-04:00
hadrian: Don't treat -Winline warnings as fatal

Such warnings are highly dependent upon the toolchain, platform, and
build configuration. It's simply too fragile to rely on these.

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3a09b789 by Ben Gamari at 2023-07-04T22:07:58-04:00
hadrian: Only pass -Wno-nonportable-include-path on Darwin

This flag, which was introduced due to #17798, is only understood by
Clang and consequently throws warnings on platforms using gcc. Sadly,
there is no good way to treat such warnings as non-fatal with `-Werror`
so for now we simply make this flag specific to platforms known to use
Clang and case-insensitive filesystems (Darwin and Windows).

See #23577.

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4af7eac2 by Mario Blažević at 2023-07-04T22:08:38-04:00
Fixed ticket #23571, TH.Ppr.pprLit hanging on large numeric literals

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2304c697 by Ben Gamari at 2023-07-04T22:09:15-04:00
compiler: Make OccSet opaque

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cf735db8 by Andrei Borzenkov at 2023-07-04T22:09:51-04:00
Add Note about why we need forall in Code to be on the right

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fb140f82 by Hécate Moonlight at 2023-07-04T22:10:34-04:00
Relax the constraint about the foreign function's calling convention of FinalizerPtr to capi as well as ccall.
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9ce44336 by meooow25 at 2023-07-05T11:42:37-04:00
Improve the situation with the stimes cycle

Currently the Semigroup stimes cycle is resolved in GHC.Base by
importing stimes implementations from a hs-boot file. Resolve the cycle
using hs-boot files for required classes (Num, Integral) instead. Now
stimes can be defined directly in GHC.Base, making inlining and
specialization possible.

This leads to some new boot files for `GHC.Num` and `GHC.Real`, the
methods for those are only used to implement `stimes` so it doesn't
appear that these boot files will introduce any new performance traps.

Metric Decrease:
    T13386
    T8095
Metric Increase:
    T13253
    T13386
    T18698a
    T18698b
    T19695
    T8095

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9edcb1fb by Jaro Reinders at 2023-07-05T11:43:24-04:00
Refactor Unique to be represented by Word64

In #22010 we established that Int was not always sufficient to store all
the uniques we generate during compilation on 32-bit platforms. This
commit addresses that problem by using Word64 instead of Int for
uniques.

The core of the change is in GHC.Core.Types.Unique and
GHC.Core.Types.Unique.Supply. However, the representation of uniques is
used in many other places, so those needed changes too. Additionally, the RTS
has been extended with an atomic_inc64 operation.

One major change from this commit is the introduction of the Word64Set and
Word64Map data types. These are adapted versions of IntSet and IntMap
from the containers package. These are planned to be upstreamed in the
future.

As a natural consequence of these changes, the compiler will be a bit
slower and take more space on 32-bit platforms. Our CI tests indicate
around a 5% residency increase.

Metric Increase:
    CoOpt_Read
    CoOpt_Singletons
    LargeRecord
    ManyAlternatives
    ManyConstructors
    MultiComponentModules
    MultiComponentModulesRecomp
    MultiLayerModulesTH_OneShot
    RecordUpdPerf
    T10421
    T10547
    T12150
    T12227
    T12234
    T12425
    T12707
    T13035
    T13056
    T13253
    T13253-spj
    T13379
    T13386
    T13719
    T14683
    T14697
    T14766
    T15164
    T15703
    T16577
    T16875
    T17516
    T18140
    T18223
    T18282
    T18304
    T18698a
    T18698b
    T18923
    T1969
    T19695
    T20049
    T21839c
    T3064
    T3294
    T4801
    T5030
    T5321FD
    T5321Fun
    T5631
    T5642
    T5837
    T6048
    T783
    T8095
    T9020
    T9198
    T9233
    T9630
    T9675
    T9872a
    T9872b
    T9872b_defer
    T9872c
    T9872d
    T9961
    TcPlugin_RewritePerf
    UniqLoop
    WWRec
    hard_hole_fits

- - - - -
6b9db7d4 by Brandon Chinn at 2023-07-05T11:44:03-04:00
Fix docs for __GLASGOW_HASKELL_FULL_VERSION__ macro
- - - - -
40f4ef7c by Torsten Schmits at 2023-07-05T18:06:19-04:00
Substitute free variables captured by breakpoints in SpecConstr

Fixes #23267

- - - - -
2b55cb5f by sheaf at 2023-07-05T18:07:07-04:00
Reinstate untouchable variable error messages

This extra bit of information was accidentally being discarded after
a refactoring of the way we reported problems when unifying a type
variable with another type. This patch rectifies that.

- - - - -
53ed21c5 by Rodrigo Mesquita at 2023-07-05T18:07:47-04:00
configure: Drop Clang command from settings

Due to 01542cb7227614a93508b97ecad5b16dddeb6486 we no longer use the
`runClang` function, and no longer need to configure into settings the
Clang command. We used to determine options at runtime to pass clang when
it was used as an assembler, but now that we configure at configure time
we no longer need to.

- - - - -
6fdcf969 by Torsten Schmits at 2023-07-06T12:12:09-04:00
Filter out nontrivial substituted expressions in substTickish

Fixes #23272

- - - - -
41968fd6 by Sylvain Henry at 2023-07-06T12:13:02-04:00
JS: testsuite: use req_c predicate instead of js_broken

- - - - -
74a4dd2e by Sylvain Henry at 2023-07-06T12:13:02-04:00
JS: implement some file primitives (lstat,rmdir) (#22374)

- Implement lstat and rmdir.
- Implement base_c_s_is* functions (testing a file type)
- Enable passing tests

- - - - -
7e759914 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: cleanup utils (#23314)

- Removed unused code
- Don't export unused functions
- Move toTypeList to Closure module

- - - - -
f617655c by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: rename VarType/Vt into JSRep

- - - - -
19216ca5 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: remove custom PrimRep conversion (#23314)

We use the usual conversion to PrimRep and then we convert these
PrimReps to JSReps.

- - - - -
d3de8668 by Sylvain Henry at 2023-07-07T02:39:38-04:00
JS: don't use isRuntimeRepKindedTy in JS FFI

- - - - -
8d1b75cb by Matthew Pickering at 2023-07-07T02:40:15-04:00
ghcup-metadata: Also updates ghcup-nightlies-0.0.7.yaml file

Fixes #23600

- - - - -
e524fa7f by Matthew Pickering at 2023-07-07T02:40:15-04:00
ghcup-metadata: Use dynamically linked alpine bindists

In theory these will work much better on alpine to allow people to build
statically linked applications there. We don't need to distribute a
statically linked application ourselves in order to allow that.

Fixes #23602

- - - - -
b9e7beb9 by Ben Gamari at 2023-07-07T11:32:22-04:00
Drop circle-ci-job.sh

- - - - -
9955eead by Ben Gamari at 2023-07-07T11:32:22-04:00
testsuite: Allow preservation of unexpected output

Here we introduce a new flag to the testsuite driver,
--unexpected-output-dir=<dir>, which allows the user to ask
the driver to preserve unexpected output from tests. The intent is for
this to be used in CI to allow users to more easily fix unexpected
platform-dependent output.

- - - - -
48f80968 by Ben Gamari at 2023-07-07T11:32:22-04:00
gitlab-ci: Preserve unexpected output

Here we enable use of the testsuite driver's `--unexpected-output-dir`
flag by CI, preserving the result as an artifact for use by users.

- - - - -
76983a0d by Matthew Pickering at 2023-07-07T11:32:58-04:00
driver: Fix -S with .cmm files

There was an oversight in the driver which assumed that you would always
produce a `.o` file when compiling a .cmm file.

Fixes #23610

- - - - -
6df15e93 by Mike Pilgrem at 2023-07-07T11:33:40-04:00
Update Hadrian's stack.yaml
- - - - -
1dff43cf by Ben Gamari at 2023-07-08T05:05:37-04:00
compiler: Rework ShowSome

Previously the field used to filter the sub-declarations to show
was rather ad-hoc and was only able to show at most one sub-declaration.

- - - - -
8165404b by Ben Gamari at 2023-07-08T05:05:37-04:00
testsuite: Add test to catch changes in core libraries

This adds testing infrastructure to ensure that changes in core
libraries (e.g. `base` and `ghc-prim`) are caught in CI.

- - - - -
ec1c32e2 by Melanie Phoenix at 2023-07-08T05:06:14-04:00
Deprecate Data.List.NonEmpty.unzip

- - - - -
5d2442b8 by Ben Gamari at 2023-07-08T05:06:51-04:00
Drop latent mentions of -split-objs

Closes #21134.

- - - - -
a9bc20cb by Oleg Grenrus at 2023-07-08T05:07:31-04:00
Add warn_and_run test kind

This is a compile_and_run variant which also captures the GHC's
stderr. The warn_and_run name is best I can come up with,
as compile_and_run is taken.

This is useful specifically for testing warnings.  We want to test that
when warning triggers, and it's not a false positive, i.e. that the
runtime behaviour is indeed "incorrect".

As an example a single test is altered to use warn_and_run

- - - - -
c7026962 by Ben Gamari at 2023-07-08T05:08:11-04:00
configure: Don't use ld.gold on i386

ld.gold appears to produce invalid static constructor tables on i386.
While ideally we would add an autoconf check to check for this
brokenness, sadly such a check isn't easy to compose. Instead to
summarily reject such linkers on i386.

Somewhat hackily closes #23579.

- - - - -
054261dd by Bodigrim at 2023-07-08T19:32:47-04:00
Add since annotations for Data.Foldable1

- - - - -
550af505 by Sylvain Henry at 2023-07-08T19:33:28-04:00
JS: support -this-unit-id for programs in the linker (#23613)

- - - - -
d284470a by Bodigrim at 2023-07-08T19:34:08-04:00
Bump text submodule

- - - - -
8e11630e by jade at 2023-07-10T16:58:40-04:00
Add a hint to enable ExplicitNamespaces for type operator imports (Fixes/Enhances #20007)

As suggested in #20007 and implemented in !8895, trying to import type operators
will suggest a fix to use the 'type' keyword, without considering whether
ExplicitNamespaces is enabled. This patch will query whether ExplicitNamespaces
is enabled and add a hint to suggest enabling ExplicitNamespaces if it isn't enabled,
alongside the suggestion of adding the 'type' keyword.

- - - - -
61b1932e by sheaf at 2023-07-10T16:59:26-04:00
tyThingLocalGREs: include all DataCons for RecFlds

The GREInfo for a record field should include the collection of all
the data constructors of the parent TyCon that have this record field.
This information was being incorrectly computed in the tyThingLocalGREs
function for a DataCon, as we were not taking into account other
DataCons with the same parent TyCon.

Fixes #23546

- - - - -
e6627cbd by Alan Zimmerman at 2023-07-10T17:00:05-04:00
EPA: Simplify GHC/Parser.y comb3

A follow up to !10743

- - - - -
ee20da34 by Bodigrim at 2023-07-10T17:01:01-04:00
Document that compareByteArrays# is available since ghc-prim-0.5.2.0

- - - - -
4926af7b by Matthew Pickering at 2023-07-10T17:01:38-04:00
Revert "Bump text submodule"

This reverts commit d284470a77042e6bc17bdb0ab0d740011196958a.

This commit requires that we bootstrap with ghc-9.4, which we do not
require until #23195 has been completed.

Subsequently this has broken nighty jobs such as the rocky8 job which in
turn has broken nightly releases.

- - - - -
d1c92bf3 by Ben Gamari at 2023-07-11T08:07:02-04:00
compiler: Fingerprint more code generation flags

Previously our recompilation check was quite inconsistent in its
coverage of non-optimisation code generation flags. Specifically, we
failed to account for most flags that would affect the behavior of
generated code in ways that might affect the result of a program's
execution (e.g. `-feager-blackholing`, `-fstrict-dicts`)

Closes #23369.

- - - - -
eb623149 by Ben Gamari at 2023-07-11T08:07:02-04:00
compiler: Record original thunk info tables on stack

Here we introduce a new code generation option, `-forig-thunk-info`,
which ensures that an `stg_orig_thunk_info` frame is pushed before every
update frame. This can be invaluable when debugging thunk cycles and
similar.

See Note [Original thunk info table frames] for details.

Closes #23255.

- - - - -
4731f44e by Jaro Reinders at 2023-07-11T08:07:40-04:00
Fix wrong MIN_VERSION_GLASGOW_HASKELL macros

I forgot to change these after rebasing.

- - - - -
dd38aca9 by Andreas Schwab at 2023-07-11T13:55:56+00:00
Hadrian: enable GHCi support on riscv64

- - - - -
09a5c6cc by Josh Meredith at 2023-07-12T11:25:13-04:00
JavaScript: support unicode code points > 2^16 in toJSString using String.fromCodePoint (#23628)

- - - - -
29fbbd4e by Matthew Pickering at 2023-07-12T11:25:49-04:00
Remove references to make build system in mk/build.mk

Fixes #23636

- - - - -
630e3026 by sheaf at 2023-07-12T11:26:43-04:00
Valid hole fits: don't panic on a Given

The function GHC.Tc.Errors.validHoleFits would end up panicking when
encountering a Given constraint. To fix this, it suffices to filter out
the Givens before continuing.

Fixes #22684

- - - - -
c39f279b by Matthew Pickering at 2023-07-12T23:18:38-04:00
Use deb10 for i386 bindists

deb9 is now EOL so it's time to upgrade the i386 bindist to use deb10

Fixes #23585

- - - - -
bf9b9de0 by Krzysztof Gogolewski at 2023-07-12T23:19:15-04:00
Fix #23567, a specializer bug

Found by Simon in https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507834

The testcase isn't ideal because it doesn't detect the bug in master,
unless doNotUnbox is removed as in
https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507692.
But I have confirmed that with that modification, it fails before
and passes afterwards.

- - - - -
84c1a4a2 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
Comments

- - - - -
b2846cb5 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
updates to comments

- - - - -
2af23f0e by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00
changes

- - - - -
6143838a by sheaf at 2023-07-13T08:02:17-04:00
Fix deprecation of record fields

Commit 3f374399 inadvertently broke the deprecation/warning mechanism
for record fields due to its introduction of record field namespaces.

This patch ensures that, when a top-level deprecation is applied to
an identifier, it applies to all the record fields as well.
This is achieved by refactoring GHC.Rename.Env.lookupLocalTcNames, and
GHC.Rename.Env.lookupBindGroupOcc, to not look up a fixed number of
NameSpaces but to look up all NameSpaces and filter out the irrelevant
ones.

- - - - -
6fd8f566 by sheaf at 2023-07-13T08:02:17-04:00
Introduce greInfo, greParent

These are simple helper functions that wrap the internal
field names gre_info, gre_par.

- - - - -
7f0a86ed by sheaf at 2023-07-13T08:02:17-04:00
Refactor lookupGRE_... functions

This commit consolidates all the logic for looking up something in
the Global Reader Environment into the single function lookupGRE.
This allows us to declaratively specify all the different modes of
looking up in the GlobalRdrEnv, and avoids manually passing around
filtering functions as was the case in e.g. the function
GHC.Rename.Env.lookupSubBndrOcc_helper.

-------------------------
Metric Decrease:
    T8095
-------------------------
-------------------------
Metric Increase:
    T8095
-------------------------

- - - - -
5e951395 by Rodrigo Mesquita at 2023-07-13T08:02:54-04:00
configure: Drop DllWrap command

We used to configure into settings a DllWrap command for windows
builds and distributions, however, we no longer do, and dllwrap is
effectively unused.

This simplification is motivated in part by the larger
toolchain-selection project (#19877, !9263)

- - - - -
49264402 by Sven Tennie at 2023-07-14T22:12:00+02:00
x86 Codegen: Implement MO_S_MulMayOflo for W16

- - - - -
053b902a by Sven Tennie at 2023-07-14T22:12:00+02:00
x86 CodeGen: MO_S_MulMayOflo better error message for rep > W64

It's useful to see which value made the pattern match fail. (If it ever
occurs.)

- - - - -
5d652bc3 by Sven Tennie at 2023-07-14T22:12:00+02:00
x86 CodeGen: Implement MO_S_MulMayOflo for W8

This case wasn't handled before. But, the test-primops test suite showed
that it actually might appear.

- - - - -
a2e82c06 by Sven Tennie at 2023-07-14T22:13:14+02:00
Add test for %mulmayoflo primop

The test expects a perfect implementation with no false positives.

- - - - -


30 changed files:

- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- − .gitlab/circle-ci-job.sh
- .gitlab/darwin/toolchain.nix
- + .gitlab/generate-ci/LICENSE
- + .gitlab/generate-ci/README.mkd
- + .gitlab/generate-ci/flake.lock
- + .gitlab/generate-ci/flake.nix
- .gitlab/gen_ci.hs → .gitlab/generate-ci/gen_ci.hs
- + .gitlab/generate-ci/generate-ci.cabal
- + .gitlab/generate-ci/generate-job-metadata
- + .gitlab/generate-ci/generate-jobs
- − .gitlab/generate_job_metadata
- − .gitlab/generate_jobs
- .gitlab/jobs.yaml
- − .gitlab/merge_request_templates/backport-for-8.8.md
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Dataflow/Collections.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/Dominators.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a68af544d9e57c23ea6e374144404a6ee6d08479...a2e82c068809b1e67c99d8315edda6c69c2ff05b

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a68af544d9e57c23ea6e374144404a6ee6d08479...a2e82c068809b1e67c99d8315edda6c69c2ff05b
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