Sjoerd Visscher pushed to branch wip/T18570 at Glasgow Haskell Compiler / GHC
Commits:
652cba7e by Peng Fan at 2025-05-14T04:24:35-04:00
Add LoongArch NCG support
Not supported before.
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c01f4374 by Lin Runze at 2025-05-14T04:24:35-04:00
ci: Add LoongArch64 cross-compile CI for testing
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ce6cf240 by Ben Gamari at 2025-05-14T04:25:18-04:00
rts/linker: Don't fail due to RTLD_NOW
In !12264 we started using the NativeObj machinery introduced some time
ago for loading of shared objects. One of the side-effects of this
change is shared objects are now loaded eagerly (i.e. with `RTLD_NOW`).
This is needed by NativeObj to ensure full visibility of the mappings of
the loaded object, which is in turn needed for safe shared object
unloading.
Unfortunately, this change subtly regressed, causing compilation
failures in some programs. Specifically, shared objects which refer to
undefined symbols (e.g. which may be usually provided by either the
executable image or libraries loaded via `dlopen`) will fail to load
with eager binding. This is problematic as GHC loads all package
dependencies while, e.g., evaluating TemplateHaskell splices. This
results in compilation failures in programs depending upon (but not
using at compile-time) packages with undefined symbol references.
To mitigate this NativeObj now first attempts to load an object via
eager binding, reverting to lazy binding (and disabling unloading) on
failure.
See Note [Don't fail due to RTLD_NOW].
Fixes #25943.
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88ee8bb5 by Sylvain Henry at 2025-05-14T04:26:15-04:00
Deprecate GHC.JS.Prim.Internal.Build (#23432)
Deprecated as per CLC proposal 329 (https://github.com/haskell/core-libraries-committee/issues/329)
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b4ed465b by Cheng Shao at 2025-05-14T04:26:57-04:00
libffi: update to 3.4.8
Bumps libffi submodule.
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a3e71296 by Matthew Pickering at 2025-05-14T04:27:38-04:00
Remove leftover trace
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2d0ecdc6 by Cheng Shao at 2025-05-14T04:28:19-04:00
Revert "ci: re-enable chrome for wasm ghci browser tests"
This reverts commit fee9b351fa5a35d5778d1252789eacaaf5663ae8.
Unfortunately the chrome test jobs may still timeout on certain
runners (e.g. OpenCape) for unknown reasons.
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3b3a5dec by Ben Gamari at 2025-05-15T16:10:01-04:00
Don't emit unprintable characters when printing Uniques
When faced with an unprintable tag we now instead print the codepoint
number.
Fixes #25989.
(cherry picked from commit e832b1fadee66e8d6dd7b019368974756f8f8c46)
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e1ef8974 by Mike Pilgrem at 2025-05-16T16:09:14-04:00
Translate iff in Haddock documentation into everyday English
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fd64667d by Vladislav Zavialov at 2025-05-20T03:25:08-04:00
Allow the 'data' keyword in import/export lists (#25899)
This patch introduces the 'data' namespace specifier in import and
export lists. The intended use is to import data constructors without
their parent type constructors, e.g.
import Data.Proxy as D (data Proxy)
type DP = D.Proxy -- promoted data constructor
Additionally, it is possible to use 'data' to explicitly qualify any
data constructors or terms, incl. operators and field selectors
import Prelude (Semigroup(data (<>)))
import Data.Function (data (&))
import Data.Monoid (data Dual, data getDual)
x = Dual "Hello" <> Dual "World" & getDual
The implementation mostly builds on top of the existing logic for the
'type' and 'pattern' namespace specifiers, plus there are a few tweaks
to how we generate suggestions in error messages.
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acc86753 by Ben Gamari at 2025-05-20T03:25:51-04:00
compiler: Use field selectors when creating BCOs
This makes it easier to grep for these fields.
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60a55fd7 by Ben Gamari at 2025-05-20T03:25:51-04:00
compiler: Clarify BCO size
Previously the semantics and size of StgBCO was a bit unclear.
Specifically, the `size` field was documented to contain the size of the
bitmap whereas it was actually the size of the closure *and* bitmap.
Additionally, it was not as clear as it could be that the bitmap was a
full StgLargeBitmap with its own `size` field.
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ac9fb269 by Simon Peyton Jones at 2025-05-20T09:19:04-04:00
Track rewriter sets more accurately in constraint solving
This MR addresses #26003, by refactoring the arcane
intricacies of Note [Equalities with incompatible kinds].
NB: now retitled to
Note [Equalities with heterogeneous kinds].
and the main Note for this MR.
In particular:
* Abandon invariant (COERCION-HOLE) in Note [Unification preconditions] in
GHC.Tc.Utils.Unify.
* Abandon invariant (TyEq:CH)) in Note [Canonical equalities] in
GHC.Tc.Types.Constraint.
* Instead: add invariant (REWRITERS) to Note [Unification preconditions]:
unify only if the constraint has an empty rewriter set.
Implementation:
* In canEqCanLHSFinish_try_unification, skip trying unification if there is a
non-empty rewriter set.
* To do this, make sure the rewriter set is zonked; do so in selectNextWorkItem,
which also deals with prioritisation.
* When a coercion hole is filled, kick out inert equalities that have that hole
as a rewriter. It might now be unlocked and available to unify.
* Remove the ad-hoc `ch_hetero_kind` field of `CoercionHole`.
* In `selectNextWorkItem`, priorities equalities withan empty rewriter set.
* Defaulting: see (DE6) in Note [Defaulting equalities]
and Note [Limited defaulting in the ambiguity check]
* Concreteness checks: there is some extra faff to try to get decent
error messages when the FRR (representation-polymorphism) checks
fail. In partiular, add a "When unifying..." explanation when the
representation-polymorphism check arose from another constraint.
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86406f48 by Cheng Shao at 2025-05-20T09:19:47-04:00
rts: fix rts_clearMemory logic when sanity checks are enabled
This commit fixes an RTS assertion failure when invoking
rts_clearMemory with +RTS -DS. -DS implies -DZ which asserts that free
blocks contain 0xaa as the designated garbage value. Also adds the
sanity way to rts_clearMemory test to prevent future regression.
Closes #26011.
ChatGPT Codex automatically diagnosed the issue and proposed the
initial patch in a single shot, given a GHC checkout and the following
prompt:
---
Someone is reporting the following error when attempting to use `rts_clearMemory` with the RTS option `-DS`:
```
test.wasm: internal error: ASSERTION FAILED: file rts/sm/Storage.c, line 1216
(GHC version 9.12.2.20250327 for wasm32_unknown_wasi)
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
```
What's the culprit? How do I look into this issue?
---
I manually reviewed & revised the patch, tested and submitted it.
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7147370b by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: do not allocate strings in bytecode assembler
This patch refactors the compiler to avoid allocating iserv buffers
for BCONPtrStr at assemble-time. Now BCONPtrStr ByteStrings are
recorded as a part of CompiledByteCode, and actual allocation only
happens at link-time. This refactoring is necessary for adding
bytecode serialization functionality, as explained by the revised
comments in this commit.
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a67db612 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make bc_strs serializable
This commit makes the bc_strs field in CompiledByteCode serializable;
similar to previous commit, we preserve the ByteString directly and
defer the actual allocation to link-time, as mentioned in updated
comment.
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5faf34ef by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make bc_itbls serializable
This commit makes bc_itbls in CompiledByteCode serializable. A
dedicated ConInfoTable datatype has been added in ghci which is the
recipe for dynamically making a datacon's info table, containing the
payload of the MkConInfoTable iserv message.
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2abaf8c1 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: remove FFIInfo bookkeeping in BCO
This commit removes the bc_ffis field from CompiledByteCode
completely, as well as all the related bookkeeping logic in
GHC.StgToByteCode. bc_ffis is actually *unused* in the rest of GHC
codebase! It is merely a list of FFIInfo, which is just a remote
pointer of the libffi ffi_cif struct; once we allocate the ffi_cif
struct and put its pointer in a CCALL instruction, we'll never free it
anyway. So there is no point of bookkeeping.
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adb9e4d2 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make FFIInfo serializable in BCO
This commit makes all the FFIInfo needed in CCALL instructions
serializable. Previously, when doing STG to BCO lowering, we would
allocate a libffi ffi_cif struct and keep its remote pointer as
FFIInfo; but actually we can just keep the type signature as FFIInfo
and defer the actual allocation to link-time.
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200f401b by Cheng Shao at 2025-05-20T17:22:19-04:00
ghci: remove redundant NewBreakModule message
This commit removes the redundant NewBreakModule message from ghci: it
just allocates two strings! This functionality can be implemented with
existing MallocStrings in one iserv call.
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ddaadca6 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make breakpoint module name and unit id serializable
This commit makes breakpoint module name and unit id serializable, in
BRK_FUN instructions as well as ModBreaks. We can simply keep the
module name and unit ids, and defer the buffer allocation to link
time.
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a0fde202 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: remove unused newModule
This commit removes the now unused newModule function from GHC.
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68c8f140 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: add BCONPtrFS for interned top level string literals in BCO
This commit adds BCONPtrFS as a BCO non-pointer literal kind, which
has the same semantics of BCONPtrStr, except it contains a FastString
instead of a ByteString. By using BCONPtrFS to represent top level
string literals that are already FastString in the compilation
pipeline, we enjoy the FastString interning logic and avoid allocating
a bunch of redundant ByteStrings for the same FastStrings, especially
when we lower the BRK_FUN instruction.
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f2b532bc by Peng Fan at 2025-05-20T17:23:15-04:00
hadrian: enable GHCi for loongarch64
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8ded2330 by kwxm at 2025-05-20T17:24:07-04:00
Fix bugs in `integerRecipMod` and `integerPowMod`
This fixes #26017.
* `integerRecipMod x 1` now returns `(# 1 | #)` for all x; previously it
incorrectly returned `(# | () #)`, indicating failure.
* `integerPowMod 0 e m` now returns `(# | () #)` for e<0 and m>1, indicating
failure; previously it incorrectly returned `(# 0 | #)`.
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c9abb87c by Andreas Klebinger at 2025-05-20T17:24:50-04:00
Specialise: Don't float out constraint components.
It was fairly complex to do so and it doesn't seem to improve anything.
Nofib allocations were unaffected as well.
See also Historical Note [Floating dictionaries out of cases]
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202b201c by Andreas Klebinger at 2025-05-21T10:16:14-04:00
Interpreter: Add limited support for direct primop evaluation.
This commit adds support for a number of primops directly
to the interpreter. This avoids the indirection of going
through the primop wrapper for those primops speeding interpretation
of optimized code up massively.
Code involving IntSet runs about 25% faster with optimized core and these
changes. For core without breakpoints it's even more pronouced and I
saw reductions in runtime by up to 50%.
Running GHC itself in the interpreter was sped up by ~15% through this
change.
Additionally this comment does a few other related changes:
testsuite:
* Run foundation test in ghci and ghci-opt ways to test these
primops.
* Vastly expand the foundation test to cover all basic primops
by comparing result with the result of calling the wrapper.
Interpreter:
* When pushing arguments for interpreted primops extend each argument to
at least word with when pushing. This avoids some issues with big
endian. We can revisit this if it causes performance issues.
* Restructure the stack chunk check logic. There are now macros for
read accesses which might cross stack chunk boundries and macros which
omit the checks which are used when we statically know we access an
address in the current stack chunk.
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67a177b4 by sheaf at 2025-05-21T10:17:04-04:00
QuickLook: do a shape test before unifying
This commit ensures we do a shape test before unifying. This ensures
we don't try to unify a TyVarTv with a non-tyvar, e.g.
alpha[tyv] := Int
On the way, we refactor simpleUnifyCheck:
1. Move the checkTopShape check into simpleUnifyCheck
2. Refactors simpleUnifyCheck to return a value of the new type
SimpleUnifyResult type. Now, simpleUnifyCheck returns "can unify",
"cannot unify" or "dunno" (with "cannot unify" being the new result
it can return). Now:
- touchabilityTest is included; it it fails we return "cannot unify"
- checkTopShape now returns "cannot unify" instead of "dunno" upon failure
3. Move the call to simpleUnifyCheck out of checkTouchableTyVarEq.
After that, checkTouchableTyVarEq becames a simple call to
checkTyEqRhs, so we inline it.
This allows the logic in canEqCanLHSFinish_try_unification to be simplified.
In particular, we now avoid calling 'checkTopShape' twice.
Two further changes suggested by Simon were also implemented:
- In canEqCanLHSFinish, if checkTyEqRhs returns PuFail with
'do_not_prevent_rewriting', we now **continue with this constraint**.
This allows us to use the constraint for rewriting.
- checkTyEqRhs now has a top-level check to avoid flattening a tyfam app
in a top-level equality of the form alpha ~ F tys, as this is
going around in circles. This simplifies the implementation without
any change in behaviour.
Fixes #25950
Fixes #26030
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4020972c by sheaf at 2025-05-21T10:17:04-04:00
FixedRuntimeRepError: omit unhelpful explanation
This commit tweaks the FixedRuntimeRepError case of pprTcSolverReportMsg,
to avoid including an explanation which refers to a type variable that
appears nowhere else.
For example, the old error message could look like the following:
The pattern binding does not have a fixed runtime representation.
Its type is:
T :: TYPE R
Cannot unify ‘R’ with the type variable ‘c0’
because the former is not a concrete ‘RuntimeRep’.
With this commit, we now omit the last two lines, because the concrete
type variable (here 'c0') does not appear in the type displayed to the
user (here 'T :: TYPE R').
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6d058a69 by Andrea Bedini at 2025-05-21T16:00:51-04:00
Don't fail when ghcversion.h can't be found (#26018)
If ghcversion.h can't be found, don't try to include it. This happens
when there is no rts package in the package db and when -ghcversion-file
argument isn't passed.
Co-authored-by: Syvlain Henry
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b1212fbf by Vladislav Zavialov at 2025-05-21T16:01:33-04:00
Implement -Wpattern-namespace-specifier (#25900)
In accordance with GHC Proposal #581 "Namespace-specified imports",
section 2.3 "Deprecate use of pattern in import/export lists", the
`pattern` namespace specifier is now deprecated.
Test cases: T25900 T25900_noext
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e650ec3e by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Forward port changelog language from 9.12
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94cd9ca4 by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Fix RestructuredText-isms in changelog
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7722232c by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Note strictness changes made in 4.16.0.0
Addresses #25886.
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3f4b823c by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Factor out ProddableBlocks machinery
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6e23fef2 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Improve efficiency of proddable blocks structure
Previously the linker's "proddable blocks" check relied on a simple
linked list of spans. This resulted in extremely poor complexity while
linking objects with lots of small sections (e.g. objects built with
split sections).
Rework the mechanism to instead use a simple interval set implemented
via binary search.
Fixes #26009.
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ea74860c by Ben Gamari at 2025-05-23T03:43:28-04:00
testsuite: Add simple functional test for ProddableBlockSet
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74c4db46 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Drop check for LOAD_LIBRARY_SEARCH_*_DIRS
The `LOAD_LIBRARY_SEARCH_USER_DIRS` and
`LOAD_LIBRARY_SEARCH_DEFAULT_DIRS` were introduced in Windows Vista and
have been available every since. As we no longer support Windows XP we
can drop this check.
Addresses #26009.
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972d81d6 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Clean up code style
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8a1073a5 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/Hash: Factor out hashBuffer
This is a useful helper which can be used for non-strings as well.
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44f509f2 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Fix incorrect use of break in nested for
Previously the happy path of PEi386 used `break` in a double-`for` loop
resulting in redundant calls to `LoadLibraryEx`.
Fixes #26052.
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bfb12783 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts: Correctly mark const arguments
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08469ff8 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Don't repeatedly load DLLs
Previously every DLL-imported symbol would result in a call to
`LoadLibraryEx`. This ended up constituting over 40% of the runtime of
`ghc --interactive -e 42` on Windows. Avoid this by maintaining a
hash-set of loaded DLL names, skipping the call if we have already
loaded the requested DLL.
Addresses #26009.
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823d1ccf by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Expand comment describing ProddableBlockSet
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e9de9e0b by Sylvain Henry at 2025-05-23T15:12:34-04:00
Remove emptyModBreaks
Remove emptyModBreaks and track the absence of ModBreaks with `Maybe
ModBreaks`. It avoids testing for null pointers...
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17db44c5 by Ben Gamari at 2025-05-23T15:13:16-04:00
base: Expose Backtraces constructor and fields
This was specified in the proposal (CLC #199) yet somehow didn't make it
into the implementation.
Fixes #26049.
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b08c08ae by soulomoon at 2025-05-28T01:57:23+08:00
Refactor handling of imported COMPLETE pragmas
from the HPT
Previously, we imported COMPLETE pragmas from all modules in the Home
Package Table (HPT) during type checking. However, since !13675, there
may be non-below modules in the HPT from the dependency tree that we do
not want to import COMPLETE pragmas from. This refactor changes the way
we handle COMPLETE pragmas from the HPT to only import them from modules
that are "below" the current module in the HPT.
- Add hugCompleteSigsBelow to filter COMPLETE pragmas from "below"
modules in the HPT, mirroring hugRulesBelow.
- Move responsibility for calling hugCompleteSigsBelow to tcRnImports,
storing the result in the new tcg_complete_match_env field of TcGblEnv.
- Update getCompleteMatchesTcM to use tcg_complete_match_env.
This refactor only affects how COMPLETE pragmas are imported from the
HPT, imports from external packages are unchanged.
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16014bf8 by Hécate Kleidukos at 2025-05-28T20:09:34-04:00
Expose all of Backtraces' internals for ghc-internal
Closes #26049
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a0adc30d by Ryan Hendrickson at 2025-05-30T14:12:52-04:00
haddock: Fix links to type operators
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7b64697c by Mario Blažević at 2025-05-30T14:13:41-04:00
Introduce parenBreakableList and use it in ppHsContext
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5f213bff by fendor at 2025-06-02T09:16:24+02:00
Make GHCi commands compatible with multiple home units
=== Design
We enable all GHCi features that were previously guarded by the `inMulti`
option.
GHCi supported multiple home units up to a certain degree for quite a while now.
The supported feature set was limited, due to a design impasse:
One of the home units must be "active", e.g., there must be one `HomeUnit`
whose `UnitId` is "active" which is returned when calling
```haskell
do
hscActiveUnitId <$> getSession
```
This makes sense in a GHC session, since you are always compiling a particular
Module, but it makes less intuitive sense in an interactive session.
Given an expression to evaluate, we can't easily tell in which "context" the expression
should be parsed, typechecked and evaluated.
That's why initially, most of GHCi features, except for `:reload`ing were disabled
if the GHCi session had more than one `HomeUnitEnv`.
We lift this restriction, enabling all features of GHCi for the multiple home unit case.
To do this, we fundamentally change the `HomeUnitEnv` graph to be multiple home unit first.
Instead of differentiating the case were we have a single home unit and multiple,
we now always set up a multiple home unit session that scales seamlessly to an arbitrary
amount of home units.
We introduce two new `HomeUnitEnv`s that are always added to the `HomeUnitGraph`.
They are:
The "interactive-ghci", called the `interactiveGhciUnit`, contains the same
`DynFlags` that are used by the `InteractiveContext` for interactive evaluation
of expressions.
This `HomeUnitEnv` is only used on the prompt of GHCi, so we may refer to it as
"interactive-prompt" unit.
See Note [Relation between the `InteractiveContext` and `interactiveGhciUnitId`]
for discussing its role.
And the "interactive-session"", called `interactiveSessionUnit` or
`interactiveSessionUnitId`, which is used for loading Scripts into
GHCi that are not `Target`s of any home unit, via `:load` or `:add`.
Both of these "interactive" home units depend on all other `HomeUnitEnv`s that
are passed as arguments on the cli.
Additionally, the "interactive-ghci" unit depends on `interactive-session`.
We always evaluate expressions in the context of the
"interactive-ghci" session.
Since "interactive-ghci" depends on all home units, we can import any `Module`
from the other home units with ease.
As we have a clear `HomeUnitGraph` hierarchy, we can set `interactiveGhciUnitId`
as the active home unit for the full duration of the GHCi session.
In GHCi, we always set `interactiveGhciUnitId` to be the currently active home unit.
=== Implementation Details
Given this design idea, the implementation is relatively straight
forward.
The core insight is that a `ModuleName` is not sufficient to identify a
`Module` in the `HomeUnitGraph`. Thus, large parts of the PR is simply
about refactoring usages of `ModuleName` to prefer `Module`, which has a
`Unit` attached and is unique over the `HomeUnitGraph`.
Consequentially, most usages of `lookupHPT` are likely to be incorrect and have
been replaced by `lookupHugByModule` which is keyed by a `Module`.
In `GHCi/UI.hs`, we make sure there is only one location where we are
actually translating `ModuleName` to a `Module`:
* `lookupQualifiedModuleName`
If a `ModuleName` is ambiguous, we detect this and report it to the
user.
To avoid repeated lookups of `ModuleName`s, we store the `Module` in the
`InteractiveImport`, which additionally simplifies the interface
loading.
A subtle detail is that the `DynFlags` of the `InteractiveContext` are
now stored both in the `HomeUnitGraph` and in the `InteractiveContext`.
In UI.hs, there are multiple code paths where we are careful to update
the `DynFlags` in both locations.
Most importantly in `addToProgramDynFlags`.
---
There is one metric increase in this commit:
-------------------------
Metric Increase:
T4029
-------------------------
It is an increase from 14.4 MB to 16.1 MB (+11.8%) which sounds like a
pretty big regression at first.
However, we argue this increase is solely caused by using more data
structures for managing multiple home units in the GHCi session.
In particular, due to the design decision of using three home units, the
base memory usage increases... but by how much?
A big contributor is the `UnitState`, of which we have three now, which
on its own 260 KB per instance. That makes an additional memory usage of
520 KB, already explaining a third of the overall memory usage increase.
Then we store more elements in the `HomeUnitGraph`, we have more
`HomeUnitEnv` entries, etc...
While we didn't chase down each byte, we looked at the memory usage over time
for both `-hi` and `-hT` profiles and can say with confidence while the memory
usage increased slightly, we did not introduce any space leak, as
the graph looks almost identical as the memory usage graph of GHC HEAD.
---
Adds testcases for GHCi multiple home units session
* Test truly multiple home unit sessions, testing reload logic and code evaluation.
* Test that GHCi commands such as `:all-types`, `:browse`, etc., work
* Object code reloading for home modules
* GHCi debugger multiple home units session
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de603d01 by fendor at 2025-06-02T09:16:24+02:00
Update "loading compiled code" GHCi documentation
To use object code in GHCi, the module needs to be compiled for use in
GHCi. To do that, users need to compile their modules with:
* `-dynamic`
* `-this-unit-id interactive-session`
Otherwise, the interface files will not match.
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b255a8ca by Vladislav Zavialov at 2025-06-02T16:00:12-04:00
docs: Fix code example for NoListTuplePuns
Without the fix, the example produces an error:
Test.hs:11:3: error: [GHC-45219]
• Data constructor ‘Tuple’ returns type ‘Tuple2 a b’
instead of an instance of its parent type ‘Tuple a’
• In the definition of data constructor ‘Tuple’
In the data type declaration for ‘Tuple’
Fortunately, a one line change makes it compile.
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6558467c by Ryan Hendrickson at 2025-06-06T05:46:58-04:00
haddock: Parse math even after ordinary characters
Fixes a bug where math sections were not recognized if preceded by a
character that isn't special (like space or a markup character).
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265d0024 by ARATA Mizuki at 2025-06-06T05:47:48-04:00
AArch64 NCG: Fix sub-word arithmetic right shift
As noted in Note [Signed arithmetic on AArch64], we should zero-extend sub-word values.
Fixes #26061
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05e9be18 by Simon Hengel at 2025-06-06T05:48:35-04:00
Allow Unicode in "message" and "hints" with -fdiagnostics-as-json
(fixes #26075)
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bfa6b70f by ARATA Mizuki at 2025-06-06T05:49:24-04:00
x86 NCG: Fix code generation of bswap64 on i386
Co-authored-by: sheaf
Fix #25601
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c0e30899 by Sjoerd Visscher at 2025-06-06T16:57:43+02:00
Calculate multiplicity for record selector functions
Until now record selector functions always had multiplicity Many, but when all the other fields have been declared with multiplicity Many (including the case when there are no other fields), then the selector function is allowed to be used linearly too, as it is allowed to discard all the other fields. Since in that case the multiplicity can be both One and Many, the selector function is made multiplicity-polymorphic.
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427 changed files:
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/InfoTable.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/Dwarf/Constants.hs
- + compiler/GHC/CmmToAsm/LA64.hs
- + compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- + compiler/GHC/CmmToAsm/LA64/Cond.hs
- + compiler/GHC/CmmToAsm/LA64/Instr.hs
- + compiler/GHC/CmmToAsm/LA64/Ppr.hs
- + compiler/GHC/CmmToAsm/LA64/RegInfo.hs
- + compiler/GHC/CmmToAsm/LA64/Regs.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
- + compiler/GHC/CmmToAsm/Reg/Linear/LA64.hs
- compiler/GHC/CmmToAsm/Reg/Target.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Platform/LoongArch64.hs → compiler/GHC/Platform/LA64.hs
- compiler/GHC/Platform/Regs.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger/Breakpoints.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToJS/Linker/Linker.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/Utils.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Name/Ppr.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Types.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- compiler/ghc.cabal.in
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/exts/data_kinds.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/linear_types.rst
- docs/users_guide/exts/pattern_synonyms.rst
- docs/users_guide/ghci.rst
- docs/users_guide/using-warnings.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Exception.hs
- ghc/GHCi/UI/Info.hs
- ghc/GHCi/UI/Monad.hs
- ghc/Main.hs
- hadrian/bindist/config.mk.in
- hadrian/src/Flavour.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Settings/Builders/RunTest.hs
- libraries/base/changelog.md
- libraries/base/src/Control/Exception/Backtrace.hs
- libraries/base/src/GHC/JS/Prim/Internal/Build.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs
- libraries/ghc-internal/src/GHC/Internal/Type/Reflection.hs
- libraries/ghc-internal/src/GHC/Internal/TypeLits.hs
- libraries/ghc-internal/src/GHC/Internal/TypeNats.hs
- libraries/ghci/GHCi/Message.hs
- libraries/ghci/GHCi/Run.hs
- rts/Disassembler.c
- rts/Hash.c
- rts/Hash.h
- rts/Interpreter.c
- rts/Linker.c
- rts/LinkerInternals.h
- rts/PathUtils.c
- rts/PathUtils.h
- rts/PrimOps.cmm
- rts/include/rts/Bytecodes.h
- rts/include/rts/storage/Closures.h
- rts/linker/Elf.c
- rts/linker/LoadNativeObjPosix.c
- rts/linker/MachO.c
- rts/linker/PEi386.c
- rts/linker/PEi386.h
- + rts/linker/ProddableBlocks.c
- + rts/linker/ProddableBlocks.h
- rts/rts.cabal
- rts/sm/Storage.h
- testsuite/driver/testlib.py
- testsuite/tests/bytecode/T22376/all.T
- testsuite/tests/callarity/unittest/CallArity1.hs
- + testsuite/tests/cmm/should_run/T25601.hs
- + testsuite/tests/cmm/should_run/T25601.stdout
- + testsuite/tests/cmm/should_run/T25601a.cmm
- testsuite/tests/cmm/should_run/all.T
- + testsuite/tests/codeGen/should_run/T26061.hs
- + testsuite/tests/codeGen/should_run/T26061.stdout
- testsuite/tests/codeGen/should_run/all.T
- testsuite/tests/dependent/should_fail/T11471.stderr
- testsuite/tests/diagnostic-codes/codes.stdout
- testsuite/tests/driver/Makefile
- testsuite/tests/driver/T8526/T8526.stdout
- testsuite/tests/driver/all.T
- testsuite/tests/driver/fat-iface/fat014.stdout
- testsuite/tests/driver/json.stderr
- testsuite/tests/driver/json_warn.stderr
- testsuite/tests/driver/multipleHomeUnits/multiGHCi.stderr
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/ghc-api/T6145.hs
- testsuite/tests/ghc-api/annotations-literals/literals.hs
- testsuite/tests/ghc-api/annotations-literals/parsed.hs
- testsuite/tests/ghc-api/apirecomp001/myghc.hs
- testsuite/tests/ghc-api/fixed-nodes/T1.hs
- + testsuite/tests/ghci.debugger/scripts/break031/Makefile
- + testsuite/tests/ghci.debugger/scripts/break031/a/A.hs
- + testsuite/tests/ghci.debugger/scripts/break031/all.T
- + testsuite/tests/ghci.debugger/scripts/break031/b/B.hs
- + testsuite/tests/ghci.debugger/scripts/break031/break031a.script
- + testsuite/tests/ghci.debugger/scripts/break031/break031a.stdout
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.script
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.stderr
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.stdout
- + testsuite/tests/ghci.debugger/scripts/break031/unitA
- + testsuite/tests/ghci.debugger/scripts/break031/unitB
- + testsuite/tests/ghci/all.T
- + testsuite/tests/ghci/ghci-mem-primops.hs
- + testsuite/tests/ghci/ghci-mem-primops.script
- + testsuite/tests/ghci/ghci-mem-primops.stdout
- testsuite/tests/ghci/linking/dyn/T3372.hs
- + testsuite/tests/ghci/prog-mhu001/Makefile
- + testsuite/tests/ghci/prog-mhu001/all.T
- + testsuite/tests/ghci/prog-mhu001/e/E.hs
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001a.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001a.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001b.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001b.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001c.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001c.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001d.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001d.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001e.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001e.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001f.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001f.stdout
- + testsuite/tests/ghci/prog-mhu001/unitE
- + testsuite/tests/ghci/prog-mhu001/unitE-main-is
- + testsuite/tests/ghci/prog-mhu002/Makefile
- + testsuite/tests/ghci/prog-mhu002/a/A.hs
- + testsuite/tests/ghci/prog-mhu002/all.T
- + testsuite/tests/ghci/prog-mhu002/b/B.hs
- + testsuite/tests/ghci/prog-mhu002/c/C.hs
- + testsuite/tests/ghci/prog-mhu002/d/Main.hs
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.stderr
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.stderr
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002c.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002c.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002d.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002d.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002e.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002e.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002f.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002f.stdout
- + testsuite/tests/ghci/prog-mhu002/unitA
- + testsuite/tests/ghci/prog-mhu002/unitB
- + testsuite/tests/ghci/prog-mhu002/unitC
- + testsuite/tests/ghci/prog-mhu002/unitD
- + testsuite/tests/ghci/prog-mhu003/Makefile
- + testsuite/tests/ghci/prog-mhu003/a/A.hs
- + testsuite/tests/ghci/prog-mhu003/all.T
- + testsuite/tests/ghci/prog-mhu003/b/Foo.hs
- + testsuite/tests/ghci/prog-mhu003/c/C.hs
- + testsuite/tests/ghci/prog-mhu003/d/Foo.hs
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.script
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.stderr
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.stdout
- + testsuite/tests/ghci/prog-mhu003/unitA
- + testsuite/tests/ghci/prog-mhu003/unitB
- + testsuite/tests/ghci/prog-mhu003/unitC
- + testsuite/tests/ghci/prog-mhu003/unitD
- + testsuite/tests/ghci/prog-mhu004/Makefile
- + testsuite/tests/ghci/prog-mhu004/a/Foo.hs
- + testsuite/tests/ghci/prog-mhu004/all.T
- + testsuite/tests/ghci/prog-mhu004/b/Foo.hs
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.script
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stderr
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stdout
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004b.script
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004b.stdout
- + testsuite/tests/ghci/prog-mhu004/unitA
- + testsuite/tests/ghci/prog-mhu004/unitB
- testsuite/tests/ghci/prog010/ghci.prog010.script
- testsuite/tests/ghci/prog018/prog018.stdout
- + testsuite/tests/ghci/prog020/A.hs
- + testsuite/tests/ghci/prog020/B.hs
- + testsuite/tests/ghci/prog020/Makefile
- + testsuite/tests/ghci/prog020/all.T
- + testsuite/tests/ghci/prog020/ghci.prog020.script
- + testsuite/tests/ghci/prog020/ghci.prog020.stderr
- + testsuite/tests/ghci/prog020/ghci.prog020.stdout
- testsuite/tests/ghci/scripts/T13869.stdout
- testsuite/tests/ghci/scripts/T13997.stdout
- testsuite/tests/ghci/scripts/T17669.stdout
- testsuite/tests/ghci/scripts/T18330.stdout
- testsuite/tests/ghci/scripts/T1914.stdout
- testsuite/tests/ghci/scripts/T20217.stdout
- testsuite/tests/ghci/scripts/T20587.stdout
- testsuite/tests/ghci/scripts/T21110.stderr
- testsuite/tests/ghci/scripts/T6105.stdout
- testsuite/tests/ghci/scripts/T8042.stdout
- testsuite/tests/ghci/scripts/T8042recomp.stdout
- testsuite/tests/ghci/scripts/ghci024.stdout
- testsuite/tests/ghci/scripts/ghci024.stdout-mingw32
- testsuite/tests/ghci/scripts/ghci058.script
- testsuite/tests/ghci/should_run/TopEnvIface.stdout
- testsuite/tests/indexed-types/should_fail/T8227.stderr
- testsuite/tests/indexed-types/should_fail/T9662.stderr
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/interface-stability/base-exports.stdout-ws-32
- + testsuite/tests/lib/integer/T26017.hs
- + testsuite/tests/lib/integer/T26017.stdout
- testsuite/tests/lib/integer/all.T
- testsuite/tests/lib/integer/integerRecipMod.hs
- testsuite/tests/lib/integer/integerRecipMod.stdout
- + testsuite/tests/linear/should_compile/LinearRecordSelector.hs
- testsuite/tests/linear/should_compile/all.T
- + testsuite/tests/linear/should_fail/LinearRecordSelectorFail.hs
- + testsuite/tests/linear/should_fail/LinearRecordSelectorFail.stderr
- testsuite/tests/linear/should_fail/all.T
- testsuite/tests/module/T21826.stderr
- testsuite/tests/numeric/should_run/all.T
- testsuite/tests/numeric/should_run/foundation.hs
- testsuite/tests/numeric/should_run/foundation.stdout
- + testsuite/tests/parser/should_compile/T25900.hs
- + testsuite/tests/parser/should_compile/T25900.stderr
- + testsuite/tests/parser/should_compile/T25900_noext.hs
- + testsuite/tests/parser/should_compile/T25900_noext.stderr
- testsuite/tests/parser/should_compile/all.T
- testsuite/tests/partial-sigs/should_fail/T14040a.stderr
- testsuite/tests/partial-sigs/should_fail/T14584.stderr
- testsuite/tests/patsyn/should_compile/ImpExp_Exp.hs
- testsuite/tests/patsyn/should_compile/T11959.hs
- testsuite/tests/patsyn/should_compile/T11959.stderr
- testsuite/tests/patsyn/should_compile/T11959Lib.hs
- testsuite/tests/patsyn/should_compile/T13350/boolean/Boolean.hs
- testsuite/tests/patsyn/should_compile/T22521.hs
- testsuite/tests/patsyn/should_compile/T9857.hs
- testsuite/tests/patsyn/should_compile/export.hs
- testsuite/tests/perf/should_run/ByteCodeAsm.hs
- testsuite/tests/pmcheck/complete_sigs/T25115a.hs
- testsuite/tests/pmcheck/should_compile/T11822.hs
- testsuite/tests/polykinds/T14172.stderr
- testsuite/tests/polykinds/T14270.hs
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- testsuite/tests/quasiquotation/T7918.hs
- testsuite/tests/rename/should_compile/T12548.hs
- testsuite/tests/rename/should_compile/T22581d.stdout
- + testsuite/tests/rename/should_compile/T25899a.hs
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- + testsuite/tests/rename/should_compile/T25899c.hs
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- testsuite/tests/rename/should_fail/T22581a.stderr
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- testsuite/tests/warnings/should_compile/T14794f.hs
- testsuite/tests/warnings/should_compile/T14794f.stderr
- testsuite/tests/wcompat-warnings/Template.hs
- + testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr
- utils/check-exact/ExactPrint.hs
- utils/genprimopcode/Main.hs
- utils/genprimopcode/Syntax.hs
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs
- utils/haddock/haddock-api/resources/html/Linuwial.std-theme/linuwial.css
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs
- utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
- utils/haddock/haddock-library/test/Documentation/Haddock/ParserSpec.hs
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/Bug548.html
- utils/haddock/html-test/ref/Bug973.html
- utils/haddock/html-test/ref/Hash.html
- utils/haddock/html-test/ref/ImplicitParams.html
- utils/haddock/html-test/ref/Instances.html
- utils/haddock/html-test/ref/PatternSyns.html
- utils/haddock/html-test/ref/TypeOperators.html
- utils/haddock/html-test/src/TypeOperators.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b087fcc4bdc9a6ee9c056de2a75ce4b...
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b087fcc4bdc9a6ee9c056de2a75ce4b...
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