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Sven Tennie pushed to branch wip/supersven/simplify-aarch64-load-and-store at Glasgow Haskell Compiler / GHC

Commits:

cf0deeaf

by Andreas Klebinger at 2024-11-02T17:54:52-04:00

Reword -fexpose-overloaded-unfoldings docs.

This should make them slightly clearer. Fixes #24844

Co-authored-by: Sylvain Henry <sylvain@haskus.fr>

1c21e7d4

by Andreas Klebinger at 2024-11-02T17:55:29-04:00

Compile T25062 simd tests even if we can't run them.

Helps avoid them being utterly broken.

Fixes #25341

573cad4b

by Cheng Shao at 2024-11-02T17:56:04-04:00

Remove unused USE_REPORT_PRELUDE code paths from the tree

This patch removes unused `USE_REPORT_PRELUDE` code paths from the
tree. They have been present since the first git revision
4fb94ae5e5d632748fa2e6c35e259eccc5a1a3f4, and might have been useful
for debugging purposes many years ago, but these code paths are never
actually built. Removing these ease maintenance of relevant modules in
the future, and also allows us to get rid of `CPP` extension in those
modules as a nice byproduct.

97f600c6

by Hassan Al-Awwadi at 2024-11-04T15:52:12+00:00

Refactored BooleanFormula to be in line with TTG (#21592)

There are two parts to this commit.
* We moved the definition of BooleanFormula over to L.H.S.BooleanFormula
* We parameterized the BooleanFormula over the pass

The GHC specific details of BooleanFormula remain in Ghc.Data.BooleanFormula.
Because its parameterized over the pass its no longer a functor or
traversable, but we defined bfMap and bfTraverse for the cases where we
needed fmap and traverse originally. Most other changes are just churn.

-------------------------
Metric Decrease:
    MultiLayerModulesTH_OneShot
-------------------------

d4fd3580

by Andreas Klebinger at 2024-11-05T07:36:16-05:00

ghc-heap: Fix incomplete selector warnings.

Use utility functions instead of selectors to read partial attributes.

Part of fixing #25380.

fdd9f62a
by Peter Trommler at 2024-11-05T07:36:51-05:00
```
PPC NCG: Implement fmin and fmax
```

8e217256

by Mike Pilgrem at 2024-11-07T04:34:20-05:00

Re CLC #293 - Don't specify Data.List.NonEmpty in terms of partial

See https://github.com/haskell/core-libraries-committee/issues/293

`List.init` had already been driven out of `tails1` by 21fc180bec93d964a7f4ffdf2429ef6f74b49ab6 but this specification also avoided partial `fromList`, so I preferred it.

The `changelog.md` for `base` is updated, with an entry added under `base-4.22.0.0`.

346e4cd1

by Zubin Duggal at 2024-11-07T04:34:57-05:00

release: copy zip files into the correct directory

Fixes #25446

bbdbe225
by Zubin Duggal at 2024-11-07T04:34:57-05:00
```
release: Sign .gz bindists too

Fixes #25447
```

0c722e14

by Hécate Kleidukos at 2024-11-07T04:35:37-05:00

hadrian: Enforce the usage of GHC >=9.8.1 for ghci-multi

GHC 9.6 no good when it comes to multi-repl stuff, despite being well
within the range of n-2 releases for bootstrapping, when the script was
adapted to load haddock, in !12851

d8f8a1c3

by Sylvain Henry at 2024-11-07T19:27:46-05:00

Handle the special ghc-prim:GHC.Prim module in the compiler

Before this patch, some custom hacks were necessary in ghc-prim's
Setup.hs to register the GHC.Prim (virtual) module and in Hadrian to
generate haddocks properly.

In this patch we special-case this module in the compiler itself instead
(which it already is, see ghcPrimIface in GHC.Iface.Load). From
Cabal/Hadrian's perspective GHC.Prim is now just a normal autogenerated
module.

This simplification is worthwhile on its own. It was found while looking
into the work needed for #24453 which aims to merge ghc-prim,
ghc-bignum, and ghc-internal. It's also one step closer to remove
ghc-prim's custom setup.

a55adc8e

by Cheng Shao at 2024-11-07T19:28:22-05:00

Clean up obsolete CPP guarded code paths from the tree

This patch cleans up obsolete CPP guarded code paths from the tree.
The minimum supported boot GHC version is 9.6, and all the pre-9.6 era
code paths can be removed.

9ede97f3

by Cheng Shao at 2024-11-07T19:28:58-05:00

Remove obsolete executable wrappers from the tree

The executable wrappers are handled by hadrian and bindist Makefile.
The various .wrapper scripts in the tree are unused since removal of
Make build system, so this patch removes them all.

7d42b2df

by tristian at 2024-11-07T19:29:40-05:00

TcRnDuplicateDecls now suggests to use the DuplicateRecordFields extension.

Fixes: !24627

e56ed179

by Zubin Duggal at 2024-11-11T15:16:35+05:30

testsuite: normalise some versions in callstacks

(cherry picked from commit f230e29f30d0c1c566d4dd251807fcab76a2710e)

a28fc903

by Zubin Duggal at 2024-11-11T15:16:35+05:30

testsuite: use -fhide-source-paths to normalise some backpack tests

(cherry picked from commit b19de476bc5ce5c7792e8af1354b94a4286a1a13)

ed16d303

by Zubin Duggal at 2024-11-11T15:16:36+05:30

testsuite/haddock: strip version identifiers and unit hashes from html tests

(cherry picked from commit fbf0889eadc410d43dd5c1657e320634b6738fa5)

e45e5836

by Zubin Duggal at 2024-11-11T15:16:36+05:30

haddock: oneshot tests can drop files if they share modtimes. Stop this by
including the filename in the key.

Ideally we would use `ghc -M` output to do a proper toposort

Partially addresses #25372

(cherry picked from commit e78c7ef96e395f1ef41f04790aebecd0409b92b9)

9104e6eb

by Zubin Duggal at 2024-11-11T15:16:36+05:30

testsuite: fix normalisation of T9930fail so that it doesn't get tripped up by ghc executable (ARGV[0]) differences

(cherry picked from commit a79a587e025d42d34bb30e115fc5c7cab6c1e030)

2c31264a

by Zubin Duggal at 2024-11-11T15:16:36+05:30

testsuite: normalise windows file seperators

(cherry picked from commit f858875e03b9609656b542aaaaff85ad0a83878a)

2807f91b

by Zubin Duggal at 2024-11-11T15:21:30+05:30

testsuite: Also match <VERSION> placeholders when normalising callsites

c02add17

by Ben Gamari at 2024-11-12T01:22:11-05:00

configure: Check version number validity

Here we verify the previously informal invariant that stable release
version numbers must have three components, preventing costly failed
releases.

Specifically, the check fails in the following scenarios:

 * `version=9.13` while `RELEASE=YES` since this would imply a
   release made from an unstable branch
 * `version=9.13.0` since unstable versions should only have two
   components
 * `version=9.12` since this has the wrong number of version components
   for a stable branch

Fixes #25390.

747fd322

by Teo Camarasu at 2024-11-12T01:22:49-05:00

docs: link to #14474 in the template-haskell docs

6d96bb62

by Zubin Duggal at 2024-11-12T01:23:25-05:00

testsuite: normalise execvp vs exec differences in process tests

Fixes #25431

502e6711

by Torsten Schmits at 2024-11-12T01:24:01-05:00

fix test lint that accumulated while the checks were broken

I didn't fix the issues flagged by the #ifdef linter because it were so
many that it seemed like the rule has become obsolete.

223a4cb5

by Torsten Schmits at 2024-11-12T01:24:02-05:00

test driver: fix file collection for regex linters

When a testsuite linter is executed with the `tracked` strategy, the
driver runs `git ls-tree` to collect eligible files.

This appears to have ceased producing any paths – `ls-tree` restricts
its results to the current working directory, which is
`testsuite/tests/linters` in this case.

As a quick fix, this patch changes the working directory to match
expectations.

9ad9ac63

by Alan Zimmerman at 2024-11-12T01:24:39-05:00

EPA: Capture location of '_' for wild card type binder

And keep track of promotion status in HsExplicitTupleTy, so the
round-trip ppr test works for it.

Updates Haddock output too, using the PromotionFlag in
HsExplicitTupleTy.

Closes #25454

c37b96fa

by Cheng Shao at 2024-11-12T01:25:15-05:00

wasm: fix setImmediate() implementation for Cloudflare Workers

This patch fixes setImmediate() implementation for Cloudflare Workers
in the wasm backend's js prelude script. Cloudflare Workers doesn't
support the MessageChannel API, and we use a setTimeout() based
fallback implementation in this case.

bea8ea4c

by Cheng Shao at 2024-11-12T01:25:15-05:00

wasm: fix FinalizationRegistry logic for Cloudflare Workers

This patch fixes FinalizationRegistry related logic for Cloudflare
Workers in wasm backend js post linker. Cloudflare Workers doesn't
support FinalizationRegistry, in this case we use a dummy
implementation that doesn't do anything.

00d551bf

by Cheng Shao at 2024-11-13T08:48:21-05:00

Remove obsolete cross-port script

This patch removes the obsolete cross-port script in the tree. The
script was based on the legacy Make build system which has been pruned
from the tree long ago. For hadrian, proper support for two-stage
bootstrapping onto a new unsupported platform is a work in progress in
!11444.

75a2eae4

by Cheng Shao at 2024-11-13T08:48:58-05:00

hadrian: fix bindist makefile for wasm32-wasi target

This patch fixes one incoherent place between bindist makefile and
hadrian logic: I forgot to include wasi/wasm32 in
OsSupportsGHCi/ArchSupportsGHCi as well. And this results in incorrect
settings file generated after installing the bindist, and "Use
interpreter"/"Have interpreter" fields incorrectly have "NO" values
where they should be "YES" like --info output of in-tree version.

0614abef

by Alan Zimmerman at 2024-11-13T08:49:34-05:00

EPA: Correctly capture leading semis in decl list

Closes #25467

00d58ae1

by Sebastian Graf at 2024-11-13T15:21:23-05:00

DmdAnal: Make `prompt#` lazy (#25439)

This applies the same treatment to `prompt#` as for `catch#`.
See `Note [Strictness for mask/unmask/catch/prompt]`.

Fixes #25439.

93233a66

by Ben Gamari at 2024-11-13T15:21:59-05:00

boot: Do not attempt to update config.sub

While Apple ARM hardware was new we found that the autoconf scripts
included in some boot packages were too old. As a mitigation for this,
we introduced logic in the `boot` script to update the `config.sub`
with that from the GHC tree. However, this causes submodules which
have `config.sub` committted to appear to be dirty. This is a
considerable headache.

Now since `config.sub` with full platform support is more common we can
remove `boot`'s `config.sub` logic.

Fixes #19574.

fa66fa64

by Ryan Scott at 2024-11-14T19:05:00-05:00

Add regression test for #16234

Issue #16234 was likely fixed by !9765. This adds a regression test to ensure
that it remains fixed.

Fixes #16234.

bfe64df8

by Matthew Pickering at 2024-11-14T19:05:36-05:00

ghc-internal: Update to Unicode 16

This patch updates the automatically generated code for querying unicode
properties to unicode 16.

Fixes #25402

1fd83f86

by Ben Gamari at 2024-11-14T19:06:13-05:00

configure: Accept happy-2.1.2

happy-2.1 was released in late Oct 2024. I have confirmed that master
bootstraps with it. Here we teach configure to accept this tool.

Fixes #25438.

aa58fc5b
by Ben Gamari at 2024-11-14T19:06:49-05:00
```
rts: Tighten up invariants of PACK
```

8aa4c10a

by Ben Gamari at 2024-11-14T19:06:49-05:00

testsuite: Fix badly escaped literals

Use raw string literals to ensure that `\s` is correctly interpreted as
a character class.

0e084029

by Ben Gamari at 2024-11-14T19:06:49-05:00

rts: Improve documentation of SLIDE bytecode instruction

9bf3663b

by Ben Gamari at 2024-11-14T19:06:49-05:00

rts/Interpreter: Assert that TEST*_P discriminators are valid

1f668511

by Ben Gamari at 2024-11-14T19:06:49-05:00

rts/Interpreter: Improve documentation of TEST*_P instructions

59e0a770

by Cheng Shao at 2024-11-14T19:07:25-05:00

misc: improve clangd compile_flags.txt flags

This patch improves the compile_flags.txt config used to power clangd
for the rts C codebase. The flags in the file are sampled & deduped
from a real stage1 build with clang-19 and vastly improves the IDE
accuracy when hacking the rts.

For maximum code coverage under the default settings,
compile_flags.txt defaults to threaded+profiled+dynamic+debug way.
This does not mean profdyn needs to be actually built in _build/stage1
for IDE to work. To activate IDE for other RTS ways, simply remove one
of the -D flags at the end of compile_flags.txt and restart clangd.

c2c562e0

by Ben Gamari at 2024-11-14T19:08:01-05:00

testsuite: Don't consider untracked files in dirtiness check

Considering trees containing untracked files as dirty is a bridge too
far. The chance of an untracked file significantly affecting measured
performanced metrics is quite small whereas not collecting measurements
is quite inconvenient for some workflows. We now ignore untracked files
in the dirtiness check.

Fixes #25471.

ed2ed6c5

by Cheng Shao at 2024-11-14T19:08:37-05:00

testsuite: add regression test T25473

This commit adds regression test T25473 marked as broken due to #25473.
It will be fixed in the subsequent commit.

bd0a8b7e

by Cheng Shao at 2024-11-14T19:08:37-05:00

wasm: fix foreign import javascript "wrapper" in TH/ghci

This patch fixes foreign import javascript "wrapper" in wasm backend's
TH/ghci by fixing the handling of dyld/finalization_registry magic
variables. Fixes T25473 and closes #25473.

f1b0bc32

by Ben Gamari at 2024-11-14T19:09:13-05:00

rts/linker: Make FreeBSD declarations proper prototypes

The iconv declarations for FreeBSD were previously not prototypes,
leading to warnings.

086cbbc1

by Ben Gamari at 2024-11-14T19:09:13-05:00

base: Drop redundant import in FreeBSD ExecutablePath implementation

79ecd199

by Ben Gamari at 2024-11-14T19:09:13-05:00

compiler: Fix partial selector warnings in GHC.Runtime.Heap.Inspect

1acb73bf
by Andrew Lelechenko at 2024-11-15T06:10:47-05:00
```
gitlab: mention CLC in MR template
```

8f2e0832

by Ben Gamari at 2024-11-15T06:11:24-05:00

rts: Allow use of GNU-stack notes on FreeBSD

Previously we gated use of GNU-style non-executable stack notes to only
apply on Linux. However, these are also supported by FreeBSD, which also
uses ELF. Fix this.

Fixes #25475.

2c427cb0

by Ben Gamari at 2024-11-16T05:27:40-05:00

rts: Fix EINTR check in timerfd ticker

When `poll` failed we previously checked that `errno == -EINTR` to
silence the failure warning. However, this is wrong as `errno` values
are generally not negated error codes (in contrast to many system call
results, which is likely what the original author had in mind).

Fixes #25477.

a0fa4941

by Ben Gamari at 2024-11-16T05:28:16-05:00

rts: Increase gen_workspace alignment to 128 bytes on AArch64

Increase to match the 128-byte cache-line size of Apple's ARMv8
implementation.

Closes #25459.

142d8afa

by Ben Gamari at 2024-11-16T16:20:47-05:00

rts/RtsFlags: Refactor size parsing

This makes a number of improvements mentioned in #20201:

 * fail if the argument cannot be parsed as a number (`-Mturtles`)
 * fail if an unrecognized unit is given (e.g. `-M1x`)

b7a146e5

by Ben Gamari at 2024-11-16T16:20:47-05:00

testsuite: Add tests for RTS flag parsing error handling

See #20201.

ddb7afa6

by Ben Gamari at 2024-11-16T16:21:23-05:00

users guide: Mention language extensions in equality constraints discussion

As suggested in #24127, mention the language extensions necessary for
usage of equality constriants in their documentation.

Closes #24127.

36133dac
by Ben Gamari at 2024-11-16T16:21:23-05:00
```
users-guide/9.14.1-notes: Fix list syntax
```

888de658

by Ben Gamari at 2024-11-16T16:21:23-05:00

users-guide/debug-info: Fix duplicate flag descriptions

f120e427

by Ben Gamari at 2024-11-16T16:21:23-05:00

users-guide: Fix reference to 9.14.1 release notes

8e975032

by Ben Gamari at 2024-11-16T16:21:59-05:00

Introduce GHC.Tc.Plugin.lookupTHName

This makes it significantly more convenient (and less
GHC-version-dependent) to resolve a template-haskell name into a GHC
Name.

As proposed in #24741.

a0e168ec

by ARATA Mizuki at 2024-11-16T16:22:40-05:00

x86 NCG SIMD: Lower packFloatX4#, insertFloatX4# and broadcastFloatX4# to SSE1 instructions

Fixes #25441

Co-authored-by: sheaf <sam.derbyshire@gmail.com>

3936bf1b

by sheaf at 2024-11-16T16:23:22-05:00

X86 NCG: allow VXOR at scalar floating-point types

The NCG can emit VXOR instructions at scalar floating-point types,
but the pretty-printer would panic instead of emitting the appropriate
VXORPS/VXORPD instructions. This patch rectifies that oversight.

Fixes #25455

d9dff93a

by Ben Gamari at 2024-11-16T16:23:58-05:00

rts: Fix platform-dependent pointer casts

Previously we had unnecessary (and incorrect) platform-dependent casts
to turn `OSThreadIds`s into a integer. We now just uniformly cast first
to a `uintptr_t` (which is always safe, regardless of whether
`OSThreadId` is a pointer), and then cast to the desired integral type.

This fixes a warning on musl platforms.

6d95cdb8

by Ben Gamari at 2024-11-16T16:24:34-05:00

testsuite: Mark encoding004 as broken on FreeBSD

Due to #22003, CP936 fails to roundtrip:
```diff
 == CP936
+Failed to roundtrip given mutant byte at index 891 (251 /= 123 at index 891)
+Failed to roundtrip given mutant byte at index 1605 (197 /= 69 at index 1605)
+Failed to roundtrip given mutant byte at index 2411 (235 /= 107 at index 2411)
+Failed to roundtrip given mutant byte at index 6480 (208 /= 80 at index 6480)
+Failed to roundtrip given mutant byte at index 6482 (210 /= 82 at index 6482)
+Failed to roundtrip given mutant byte at index 6484 (212 /= 84 at index 6484)
+Failed to roundtrip given mutant byte at index 6496 (224 /= 96 at index 6496)
+Failed to roundtrip given mutant byte at index 7243 (203 /= 75 at index 7243)
+Failed to roundtrip given mutant byte at index 7277 (237 /= 109 at index 7277)
+Failed to roundtrip given mutant byte at index 8027 (219 /= 91 at index 8027)
+Failed to roundtrip given mutant byte at index 8801 (225 /= 97 at index 8801)
```

26e86984

by Ben Gamari at 2024-11-18T04:05:31-05:00

hadrian: Allow haddock options to be passed via key-value settings

6e68b117

by Matthew Pickering at 2024-11-18T04:06:07-05:00

Exception rethrowing

Basic changes:

* Change `catch` function to propagate exceptions using the
  WhileHandling mechanism.
* Introduce `catchNoPropagate`, which does the same as before, but
  passes an exception which can be rethrown.
* Introduce `rethrowIO` combinator, which rethrows an exception with a
  context and doesn't add a new backtrace.
* Introduce `tryWithContext` for a variant of `try` which can rethrow
  the exception with it's original context.
* onException is modified to rethrow the original error rather than
  creating a new callstack.
* Functions which rethrow in GHC.Internal.IO.Handle.FD,
  GHC.Internal.IO.Handle.Internals, GHC.Internal.IO.Handle.Text, and
  GHC.Internal.System.IO.Error are modified to not add a new callstack.

Implements CLC proposal#202 <https://github.com/haskell/core-libraries-committee/issues/202>

a4e0d235

by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00

exceptions: Improve the message layout as per #285

This commit fixes the layout of the additional information included when
displaying an exception, namely the type of the exception.

It also fixes the default handler's heading message to work well
together with the improved display message of SomeException.

CLC proposal#285

284ffab3

by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00

Display type and callstack of exception on handler

This commit changes the Exception instance of SomeException to *simply*
display the underlying exception in `displayException`. The augmented
exception message that included the type and backtrace of the exception
are now only printed on a call to `displayExceptionWithInfo`.

At a surface level, existing programs should behave the same since the
`uncaughtExceptionHandler`, which is responsible for printing out uncaught
exceptions to the user, will use `displayExceptionWithInfo` by default.

However, unlike the instance's `displayException` method, the
`uncaughtExceptionHandler` can be overriden with
`setUncaughtExceptionHandler`. This makes the extra information opt-in
without fixing it the instance, which can be valuable if your program
wants to display uncaught exceptions to users in a user-facing way
(ie without backtraces).

This is what was originally agreed for CLC#231 or CLC#261 with regard to
the type of the exception information.

The call stack also becoming part of the default handler rather than the
Exception instance is an ammendment to CLC#164.

Discussion of the ammendment is part of CLC#285.

36cddd2c

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

Remove redundant CallStack from exceptions

Before the exception backtraces proposal was implemented, ErrorCall
accumulated its own callstack via HasCallStack constraints, but
ExceptionContext is now accumulated automatically.

The original ErrorCall mechanism is now redundant and we get a duplicate
CallStack

Updates Cabal submodule to fix their usage of ErrorCallWithLocation to ErrorCall

CLC proposal#285

Fixes #25283

7a74330b

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

Freeze call stack in error throwing functions

CLC proposal#285

3abf31a4

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

De-duplicate displayContext and displayExceptionContext

The former was unused except for one module where it was essentially
re-defining displayExceptionContext.

Moreover, this commit extends the fix from
bfe600f5bb3ecd2c8fa71c536c63d3c46984e3f8 to displayExceptionContext too,
which was missing.

c0d783f8

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

Re-export NoBacktrace from Control.Exception

This was originally proposed and accepted in section
    "2.7   Capturing Backtraces on Exceptions"
of the CLC proposal for exception backtraces.

However, the implementation missed this re-export, which this commit now
fixes.

802b5c3e

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

Fix exception backtraces from GHCi

When running the program with `runhaskell`/`runghc` the backtrace should
match the backtrace one would get by compiling and running the program.
But currently, an exception thrown in a program interpreted with
`runhaskell` will:

    * Not include the original exception backtrace at all
    * Include the backtrace from the internal GHCi/ghc rethrowing of the
      original exception

This commit fixes this divergence by not annotating the ghc(i) backtrace
(with NoBacktrace) and making sure that the backtrace of the original
exception is serialized across the boundary and rethrown with the
appropriate context.

Fixes #25116

The !13301 MR (not this commit in particular) improves performance of
MultiLayerModules. Unfortunately, T3294 regresses on aarch64-linux-deb12
by 1% allocations. Since this patch must be merged for 9.12 ASAP, we
will not be able to investigate the slight regression on this platform
in time.

-------------------------
Metric Decrease:
    MultiLayerModulesRecomp
    MultiLayerModulesTH_OneShot
Metric Increase:
    T3294
-------------------------

3e89eb65
by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
```
base: Add to changelog.md CLC #285
```

d9326a48

by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00

Bump array and stm submodules for testsuite

The testsuites of array and stm had to be updated according to !13301.

Updates submodule array and stm.

325fcb5d

by Ben Gamari at 2024-11-18T04:06:45-05:00

rts/adjustor: Clean up code style of Nativei386 adjustor

39bb6e58

by Ben Gamari at 2024-11-18T04:06:45-05:00

rts/adjustor: Fix stack overrun error in Nativei386 adjustor

We were reserving the wrong kind of adjustor context (the generic
`AdjustorContext` used by other adjustor implementations, rather than
the i386-specific `CCallContext`) to return the adjustor context while
freeing, resulting in #25485.

Fixes #25485.

831aab22

by sheaf at 2024-11-18T21:22:36-05:00

Include diagnostic reason in -fdiagnostics-as-json

This commit ensures that the -fdiagnostics-as-json output includes the
diagnostic reason. This allows the full error message produced by GHC
to be re-constructed from the JSON output.

Fixes #25403

3e5bfdd3

by Ben Gamari at 2024-11-18T21:23:12-05:00

rts: Introduce printIPE

This is a convenience utility for use in GDB.

44d909a3

by Sjoerd Visscher at 2024-11-19T14:38:24-05:00

Don't store boot locations in finder cache

Partially reverts commit fff55592a7b

Amends add(Home)ModuleToFinder so that locations for boot files are not stored in the finder cache.

Removes InstalledModule field from InstalledFound constructor since it's the same as the key that was searched for.

64c95292

by Sjoerd Visscher at 2024-11-19T14:38:24-05:00

Concentrate boot extension logic in Finder

With new mkHomeModLocation that takes an extra HscSource to add boot extensions if required.

11bad98d

by ARATA Mizuki at 2024-11-19T14:39:08-05:00

Better documentation for floating-point min/max and SIMD primitives

See #25350 for floating-point min/max

Co-authored-by: sheaf <sam.derbyshire@gmail.com>

791a47b2
by Arnaud Spiwack at 2024-11-20T14:00:05+00:00
```
Add test for #25185
```

374e18e5

by Arnaud Spiwack at 2024-11-20T14:09:30+00:00

Quick look: emit the multiplicity of app heads in tcValArgs

Otherwise it's not scaled properly by the context, allowing unsound
expressions.

Fixes #25185.

1fc02399

by sheaf at 2024-11-20T18:11:03-05:00

x86 NCG: fix regUsageOfInstr for VMOVU & friends

This commit fixes the implementation of 'regUsageOfInstr' for vector
operations that take an 'Operand' as the destination, by ensuring that
when the destination is an address then the address should be *READ*,
and not *WRITTEN*.

Getting this wrong is a disaster, as it means the register allocator
has incorrect information, which can lead to it discard stores to
registers, segfaults ensuing.

Fixes #25486

7bd407a6
by Brandon Chinn at 2024-11-21T14:08:15-05:00
```
Fix CRLF in multiline strings (#25375)
```

7575709b

by Rodrigo Mesquita at 2024-11-21T14:08:52-05:00

Improve reachability queries on ModuleGraph

Introduces `ReachabilityIndex`, an index constructed from a
`GHC.Data.Graph.Directed` `Graph` that supports fast reachability
queries (in $O(1)$). This abstract data structure is exposed from
`GHC.Data.Graph.Directed.Reachability`.

This index is constructed from the module graph nodes and cached in
`ModuleGraph`, enabling efficient reachability queries on the module
graph. Previously, we'd construct a Map of Set of ModuleGraph nodes
which used a lot of memory (`O(n^2)` in the number of nodes) and cache
that in the `ModuleGraph`. By using the reachability index we get rid of
this space leak in the module graph -- even though the index is still
quadratic in the number of modules, it is much, much more space
efficient due to its representation using an IntMap of IntSet as opposed
to the transitive closure we previously cached.

In a memory profile of MultiLayerModules with 100x100 modules, memory
usage improved from 6GB residency to 2.8GB, out of which roughly 1.8GB
are caused by a second space leak related to ModuleGraph. On the same
program, it brings compile time from 7.5s to 5.5s.

Note how we simplify `checkHomeUnitsClosed` in terms of
`isReachableMany` and by avoiding constructing a second graph with the
full transitive closure -- it suffices to answer the reachability query
on the full graph without collapsing the transitive closure completely
into nodes.

Unfortunately, solving this leak means we have to do a little bit more
work since we can no longer cache the result of turning vertex indices
into nodes. This results in a slight regression in MultiLayerModulesTH_Make,
but results in large performance and memory wins when compiling large
amounts of modules.

-------------------------
Metric Decrease:
    mhu-perf
Metric Increase:
    MultiLayerModulesTH_Make
-------------------------

bcbcdaaf

by Cheng Shao at 2024-11-21T14:09:28-05:00

driver: fix hpc undefined symbol issue in TH with -fprefer-byte-code

This commit fixes an undefined symbol error in RTS linker when
attempting to compile home modules with -fhpc and
-fbyte-code-and-object-code/-fprefer-byte-code, see #25510 for
detailed description and analysis of the bug.

Also adds T25510/T25510c regression tests to test make mode/oneshot
mode of the bug.

970ada5a

by Ben Gamari at 2024-11-22T23:32:06-05:00

gitlab-ci: Bump ci-images

For introduction of Alpine/i386 image.

Thanks to Julian for the base image.

Co-Authored-By: Julian Ospald <hasufell@hasufell.de>

8115abc2

by Ben Gamari at 2024-11-22T23:32:06-05:00

gitlab-ci: Add release job for i386/Alpine

As requested by Mikolaj and started by Julian.

Co-Authored-By: Julian Ospald <hasufell@hasufell.de>

639f0149
by Ben Gamari at 2024-11-22T23:32:06-05:00
```
rts/linker/Elf: Resolve _GLOBAL_OFFSET_TABLE_
```

490d4d0a

by Ben Gamari at 2024-11-22T23:32:06-05:00

gitlab-ci: Mark i386 Alpine test breakages

Marks the following tests as broken on i386/Alpine:

 * T22033 due to #25497
 * simd009, T25062_V16, T25169, T22187_run due to #25498

536cdf09

by Cheng Shao at 2024-11-22T23:32:42-05:00

compiler: remove unused GHC.Linker.Loader.loadExpr

This patch removes the unused `GHC.Linker.Loader.loadExpr` function.
It was moved from `GHC.Runtime.Linker.linkExpr` in `ghc-9.0` to
`GHC.Linker.Loader.loadExpr` in `ghc-9.2`, and remain completely
unused and untested ever since. There's also no third party user of
this function to my best knowledge, so let's remove this. Anyone who
wants to write their own GHC API function to load bytecode can consult
the source code in older release branches.

6ee35024

by Drew Fenwick at 2024-11-22T23:33:26-05:00

Fix a non-compiling example in the type abstractions docs

This patch adds a missing Show constraint to a code example in the User Guide's type abstractions docs to fix issue #25422.

d1172e20

by Rodrigo Mesquita at 2024-11-22T23:34:02-05:00

Re-introduce ErrorCallWithLocation with a deprecation pragma

With the removal of the duplicate backtrace, part of CLC proposal #285,
the constructor `ErrorCallWithLocation` was removed from base.

This commit re-introduces it with a deprecation.

1187a60a

by Ben Gamari at 2024-11-22T23:34:39-05:00

testsuite: Skip tests requiring Hadrian deps in out-of-tree testsuite runs

Some testsuite tests require specific tools (e.g. `check-ppr` and
`check-exact`) beyond those shipped in the binary distribution. Skip
these tests.

Fixes #13897.

c37d7a2e

by Ben Gamari at 2024-11-22T23:34:39-05:00

testsuite: Declare exactprint tests' dependency on check-exact

454ce957

by Ben Gamari at 2024-11-22T23:35:15-05:00

ghc-internal: Fix a few cases of missing Haddock markup

a249649b

by Ben Gamari at 2024-11-22T23:35:51-05:00

testsuite/GHCiPrimCall : Add missing Makefile includes

a021a493

by Ben Gamari at 2024-11-22T23:35:51-05:00

testsuite/IpeStats: Use Make rather than shell interpolation

6e1fbda7

by Ben Gamari at 2024-11-25T03:55:44-05:00

hadrian-ghci-multi: Pass -this-package-name in unit response files

As noted in #25509, the `-this-package-name` must be passed for each
package to ensure that GHC can response references to the packages'
exposed modules via package-qualified imports. Fix this.

Closes #25509.

a05e4a9b

by Simon Hengel at 2024-11-25T03:56:33-05:00

Refactoring: Use `OnOff` more consistently for `Extension`

7536181d

by Matthew Pickering at 2024-11-25T14:00:07-05:00

driver: Always link against "base" package when one shot linking

The default value for base-unit-id is stored in the settings file.

At install time, this can be set by using the BASE_UNIT_ID environment
variable.

At runtime, the value can be set by `-base-unit-id` flag.

For whether all this is a good idea, see #25382

Fixes #25382

7f90f319

by Andreas Klebinger at 2024-11-25T14:00:44-05:00

Compacting GC: Handle black holes in large objects.

As #14497 showed black holes can appear inside large objects when
we capture a computation and later blackhole it like we do for AP_STACK
closures.

Fixes #24791

291388e1

by Cheng Shao at 2024-11-25T14:01:19-05:00

ci: minor nix-in-docker improvements

This patch makes some minor improvements re nix-in-docker logic in the
ci configuration:

- Update `nixos/nix` to the latest version
- Apply $CPUS to `cores`/`max-jobs` to avoid oversubscribing while
  allowing a reasonable degree of parallelism
- Remove redundant `--extra-experimental-features nix-command` in
  later `nix shell` invocations, it's already configured in
  `/etc/nix/nix.conf`

e684c406

by Cheng Shao at 2024-11-25T14:01:57-05:00

ci: avoid depending on stack job for test-bootstrap jobs

This patch makes test-bootstrap related ci jobs only depend on
hadrian-ghc-in-ghci job to finish, consistent with other jobs in the
full-build stage generated by gen_ci.hs. This allows the jobs to be
spawned earlier and improve overall pipeline parallelism.

caaf5388

by Simon Hengel at 2024-11-25T14:02:41-05:00

Refactoring: Remove `pSupportedExts` from `ParserOpts`

This is never used for lexing / parsing.  It is only used by
`GHC.Parser.Header.getOptions`.

41f8365c
by Arnaud Spiwack at 2024-11-25T14:03:23-05:00
```
Add test for #25515
```

9279619f

by Arnaud Spiwack at 2024-11-25T14:03:23-05:00

Desugar record notation with correct multiplicities

Simply uses the multiplicity as stored in the field. As I'm writing
this commit, the only possible multiplicity is 1, but !13525 is
changing this. It's actually easier to take !13525 into account.

Fixes #25515.

fcc3ae6e

by Andreas Klebinger at 2024-11-26T08:24:58-05:00

Clarify INLINE unfolding optimization docs.

Fixes #24660

88c4fe1d

by Cheng Shao at 2024-11-26T08:25:34-05:00

rts: remove -Wl,-U,___darwin_check_fd_set_overflow hack

This patch bumps macOS minimum SDK version to 11.0 for x86_64-darwin
to align it with aarch64-darwin. This allows us to get rid of the
horrible -Wl,-U,___darwin_check_fd_set_overflow hack, which is causing
linker warnings and testsuite failures on macOS 15. Fixes #25504.

53f978c0

by doyougnu at 2024-11-26T16:07:26-05:00

ghc-experimental: expose GHC.RTS.Flags, GHC.Stats

See this CLC proposal:

- https://github.com/haskell/core-libraries-committee/issues/289

and this CLC proposal for background:

- https://github.com/haskell/core-libraries-committee/issues/288

Metric Decrease:
    MultiLayerModulesTH_OneShot

e70d4140

by Wang Xin at 2024-11-26T16:08:10-05:00

Add -mcmodel=medium moduleflag to generated LLVM IR on LoongArch platform

With the Medium code model, the jump range of the generated jump
instruction is larger than that of the Small code model. It's a
temporary fix of the problem descriped in https://gitlab.haskell
.org/ghc/ghc/-/issues/25495. This commit requires that the LLVM
used contains the code of commit 9dd1d451d9719aa91b3bdd59c0c6679
83e1baf05, i.e., version 8.0 and later. Actually we should not
rely on LLVM, so the only way to solve this problem is to implement
the LoongArch backend.

Add new type for codemodel

df42ba16

by Andreas Klebinger at 2024-11-27T11:40:49-05:00

Cmm constant folding: Narrow results to operations bitwidth.

When constant folding ensure the result is still within bounds
for the given type by explicitly narrowing the results.

Not doing so results in a lot of spurious assembler warnings
especially when testing primops.

bf3db97e

by Ben Gamari at 2024-11-27T11:41:26-05:00

ghc-toolchain: Introduce basic flag validation

We verify that required flags (currently `--output` and `--triple`) are
provided. The implementation is truly awful, but so is getopt.

Begins to address #25500.

a104508d

by Ben Gamari at 2024-11-27T11:42:03-05:00

rts: Allow ExecPage to allocate anywhere in address space

Currently the ExecPage facility has two users:

 * GHCi, for constructing info tables, and
 * the adjustor allocation path

Despite neither of these have any spatial locality constraints ExecPage
was using the linker's `mmapAnonForLinker`, which tries hard to ensure
that mappings end up nearby the executable image. This makes adjustor
allocation needlessly subject to fragmentation concerns.

We now instead return less constrained mappings, improving the
robustness of the mechanism.

Addresses #25503.

c3fc9b86

by Ben Gamari at 2024-11-27T11:42:39-05:00

base: Fix incorrect mentions of GHC.Internal.Numeric

These were incorrectly changed by the automated refactoring of the
`ghc-internal` migration.

Fixes #25521.

a362b943

by sheaf at 2024-11-27T23:44:28-05:00

Add checkExact to toolTargets

This change means that the Hadrian multi target will include exactprint.
In particular, this means that HLS will work on exactprint inside the GHC tree.

e6c957e4
by Arnaud Spiwack at 2024-11-27T23:45:09-05:00
```
Add test for #25428
```

52d97f4e

by Arnaud Spiwack at 2024-11-27T23:45:09-05:00

Don't bypass MonoLocalBind in empty patterns

Fixes #25428

7890f2d8

by Ben Gamari at 2024-11-28T10:26:46-05:00

hadrian: Bump directory bound to >=1.3.9

Earlier versions of `directory` are racy on Windows due to #24382.

Also includes necessary Hadrian bootstrap plan bump.

Fixes #24382.

0fd43ea6
by Adam Sandberg Ericsson at 2024-11-28T10:27:22-05:00
```
mention -Iw in +RTS -?
```

6cf579b9

by Ben Gamari at 2024-11-28T10:27:59-05:00

gitlab-ci: Set GIT_SUBMODULE_FORCE_HTTPS

GitLab recommends using `https://` to clone submodules and provides the
`GIT_SUBMODULE_FORCE_HTTPS` variable to force this.

Fixes #25528.

5b4774f9

by sheaf at 2024-12-03T15:22:07+01:00

Remove TcRnDeprecatedInvisTyArgInConPat mechanism

The combination of ScopedTypeVariables + TypeApplications now no longer
enables the use of type applications in constructor patterns, as per
GHC proposal #448.

This completes the deprecation that begun with GHC 9.8.

We also remove the -Wdeprecated-type-abstractions flag, which was
introduced in GHC 9.10.

f813c8d7

by sheaf at 2024-12-03T17:10:15-05:00

Hadrian: use / when making filepaths absolute

In Hadrian, we are careful to use -/- rather than </>, in order to use
/ instead of \ in filepaths. However, this gets ruined by the use of
makeAbsolute from System.Directory, which, on Windows, changes back
forward slashes to backslashes.

292ed74e

by Ben Gamari at 2024-12-03T17:10:52-05:00

rts/linker: Fix out-of-bounds mapping logic

Previously the structure of `mmapInRegion` concealed a subtle bug
concerning handling of `mmap` returning mappings below the beginning of
the desired region. Specifically, we would reset `p = result + bytes`
and then again reset `p = region->start` before looping around for
another iteration. This resulted in an infinite loop on FreeBSD.

Fixes #25492.

20912f5b
by Ben Gamari at 2024-12-03T17:10:52-05:00
```
rts/linker: Clarify debug output
```

f98b3ac0

by Simon Hengel at 2024-12-03T17:11:30-05:00

SysTools: Avoid race conditions when processing output (fixes #16450)

03851b64

by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00

mg: Drop unnecessary HasCallStack

This HasCallStack was a debugging artifact from a previous commit.

01d213b5
by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
```
Improve haddock of graphReachabilityCyclic
```

f7cbffe2

by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00

Refactor ModuleGraph interface

The 'ModuleGraph' abstraction represents the relationship and strucutre
of the modules being compiled. This structure is meant to be constructed
once at the start of compilation, and never changed again.

However, it's exposed interface was confusing and exposed too many
footguns which led to inneficient usages of the ModuleGraph. This commit
improves significantly the exported interface of ModuleGraph, taking
into consideration the recent improvements around reachability queries.

Since the ModuleGraph graphs and related structures (HPT, EPS) are
performance critical in the sense that somewhat simple mistakes can
cause bad leaks and non-linear memory usage, we want to have proper APIs
that guide efficient usage. This is a good step in that direction.

b69a7f3c

by David Binder at 2024-12-04T18:37:42-05:00

Use consistent capitalization for "GHC Proposal" in user guide

18d9500d
by David Binder at 2024-12-04T18:37:42-05:00
```
Fix reference to GHC proposal 193 in user guide
```

dd959406

by Ben Gamari at 2024-12-04T18:38:18-05:00

Revert "rts/Interpreter: Assert that TEST*_P discriminators are valid"

This assertion was based on the misconception that `GET_TAG` was
returning the pointer tag whereas it is actually returning the
constructor tag.

This reverts commit 9bf3663b9970851e7b5701d68147450272823197.

Fixes #25527.

cad6fede

by Ben Gamari at 2024-12-04T18:38:54-05:00

rts/IOManager: Drop dead code

This assignment is dead code as it occurs after all branches have
returned. Moreover, it can't possibly be relevant since the "available"
branch already sets `flag`.

Potentially fixes #25542.

55d8304e

by Ben Gamari at 2024-12-06T16:56:00-05:00

ghc-internal: Drop GHC.Internal.Data.Enum

This module consists only of reexports and consequently there is no
reason for it to exist.

56b9f484

by Ben Gamari at 2024-12-06T16:56:00-05:00

base: Introduce Data.Bounded

As proposed in [CLC#208] but unfortunately `Data.Enum` was already
incorrectly introduced in the `ghc-internal` refactor.

[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208

336d392e

by Ben Gamari at 2024-12-06T16:56:00-05:00

base: Deprecate export of Bounded from Data.Enum

This begins the process of bringing us into compliance with
[CLC#208].

[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208

dd7ca939

by Ben Gamari at 2024-12-06T16:56:00-05:00

base: Mention incorrect Data.Enum addition in changelog

dfd1db48

by Ben Gamari at 2024-12-06T16:56:36-05:00

base: Reintroduce {Show,Enum} IoSubSystem

These instances were dropped in !9676 but not approved by the CLC.

Addresses #25549.

090fc7c1

by Peter Trommler at 2024-12-07T03:41:21-05:00

Fix requirements on T25240

T25240 doesn't need RTS linker, GHCi is sufficient and GHCi can also be
dynamically linked.

3fb5d399

by Peter Trommler at 2024-12-07T03:41:21-05:00

Fix requirements for T25155

Loading C objects requires RTS linker.

4c58bdf6

by Leary at 2024-12-07T03:42:07-05:00

TH: Add typed variants of dataToExpQ and liftData

This commit introduces to template-haskell (via ghc-internal) two
functions `dataToCodeQ` and `liftDataTyped`, typed variants of
`dataToExpQ` and `liftData` respectively.

Tested in: `dataToCodeQUnit`.

63027593

by Serge S. Gulin at 2024-12-08T13:52:05+03:00

JS: Basic cleanup for unused stuff to simplify things.

1. Make `staticInitStat`, `staticDeclStat`, `allocUnboxedConStatic`, `allocateStaticList`, `jsStaticArg` local to modules.
2. Remove unused `hdRawStr`, `hdStrStr` from Haskell and JavaScript (`h$pstr`, `h$rstr`, `h$str`).
3. Introduce a special type `StaticAppKind` enumeration and `StaticApp` to represent boxed scalar static applications. Originally, StaticThunk supported to pass Maybe when it became Nothing for initializied thunks in an alternatie way but it is not used anymore.

a9f8f1fb

by Serge S. Gulin at 2024-12-08T14:10:45+03:00

JS: Add trivial optimizations for `unpackCString` and `unpackCStringUtf8`.

It became possible due of introduction strings unfloating at Sinker pass (#13185). Earns few more bytes at optimizations.

b519c06b

by Serge S. Gulin at 2024-12-08T15:50:26+03:00

JS: Specialize unpackCString# CAFs (fixes #24744)

Code analysis shown that such optimization would be possible out of the box if `cachedIdentForId` allowed to do that for Haskell `Id`s which are represented by few JavaScript `Ident`s. It is a usual for strings which are represented at JavaScript as a pair of 2 values: the string content and the offset where to start reading actual string from the full content. Usually offset is 0 but technically we need to allow such complex structures to be treated as "global".

Enabling it there shown that `genToplevelRhs` and `globalOccs` had inaccuracies in their implementations:
1. `globalOccs` operated over JavaScript's `Ident`s but for complex structures it didn't pay attention to the fact that different Idents actually could be pointed to same Id. Now the algo is changed to calculate occurencies for Ids.
2. `genToplevelRhs` didn't assume that different Idents pointed to same Id can have mixed order of occurence. But actually the order is important. Strings are encoded into 2 variables where first is content and second is offset and their order are not interchangeable. It is fixed by regeneration Idents from collected Ids which is fine because all Idents generation is passed through the Cache and they are quasi-stable.

a8ceccf3

by Brandon Chinn at 2024-12-09T16:25:43-05:00

Fix panic in multiline string with unterminated gap (#25530)

9e464ad0
by Brandon Chinn at 2024-12-09T16:25:43-05:00
```
Add test case for unterminated multiline string
```

ed1ed5c6

by Rodrigo Mesquita at 2024-12-09T16:26:19-05:00

Revert mapMG renaming

We had previously renamed this function for consistency, but that caused unnecessary breakage

158261f7

by Sylvain Henry at 2024-12-09T16:27:01-05:00

RTS: make Cabal flags manual

Cabal shouldn't automatically try to set them. We set them explicitly.

a83b7ed6
by Matthew Stephenson at 2024-12-10T14:01:22-05:00
```
Add missing @since documentation for (!?) function
```

e745e3a3

by Ben Gamari at 2024-12-10T14:01:59-05:00

compiler: Don't attempt to TSAN-instrument SIMD operations

TSAN only provides instrumentation for 8, 16, 32, and 64-bit memory
loads/stores. Don't attempt to instrument wider operations.

Fixes #25563.

684c0018

by Ben Gamari at 2024-12-10T14:02:35-05:00

gitlab/ci: Don't clobber RUNTEST_ARGS

Previously the logic handling `IGNORE_PERF_FAILURES` clobbered the
user's `RUNTEST_ARGS`. Fix this.

41dae5b8

by Ben Gamari at 2024-12-10T14:03:11-05:00

hadrian: Mitigate mktexfmt race

At least some versions of Texlive's `mktexfmt` utility cannot be invoked
concurrently in their initial run since they fail to handle failure of
`mkdir` due to racing. Specifically, we see

```
| Run Xelatex: users_guide.tex => /tmp/extra-dir-9616886274866
| Run Xelatex: Haddock.tex => /tmp/extra-dir-9616886274869
This is XeTeX, Version 3.14159265-2.6-0.999992 (TeX Live 2020) (preloaded format=xelatex)
 restricted \write18 enabled.
kpathsea: Running mktexfmt xelatex.fmt
mktexfmt: mktexfmt is using the following fmtutil.cnf files (in precedence order):
mktexfmt:   /usr/share/texlive/texmf-dist/web2c/fmtutil.cnf
mktexfmt: mktexfmt is using the following fmtutil.cnf file for writing changes:
mktexfmt:   /builds/ghc/ghc/tmp-home/.texlive2020/texmf-config/web2c/fmtutil.cnf
/usr/bin/mktexfmt: mkdir(/builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c/) failed for tree /builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c: File exists at /usr/share/texlive/tlpkg/TeXLive/TLUtils.pm line 937.
I can't find the format file `xelatex.fmt'!
```

That is two `mktexfmt` invocations (for the user's guide and haddock
builds) attempted to create `$HOME/texlive2020/texmf-var/web2c` and
raced. One of the two `mkdir`'s consequently failed, bringing down the
entire build.

We avoid this by ensuring that the first `xelatex` invocation is always
performed serially.

Fixes #25564.

9efbc51f

by Ben Gamari at 2024-12-10T14:03:48-05:00

rts/CheckUnload: Reset old_objects if unload is skipped

Previously `checkUnload` failed to reset `old_objects` when it decided
not to unload (e.g. due to heap profiling being enabled).

Fixes #24935.

5192a75f

by Ben Gamari at 2024-12-11T04:28:11-05:00

rts: Annotate BCOs with their Name

This introduces a new bytecode instruction, `BCO_NAME`, to aid in debugging
bytecode execution. This instruction is injected by `mkProtoBCO` and
captures the Haskell name of the BCO. It is then printed by the
disassembler, allowing ready correlation with STG dumps.

99225996

by Ben Gamari at 2024-12-11T04:28:48-05:00

configure: Implement ld override whitelist

Bring `configure` into alignment with `ghc-toolchain`, ensuring that the
ld-override logic will only take effect on Linux and Windows.

Fixes #25501.

4a8fc928