[Git][ghc/ghc][wip/T24603] 100 commits: interpreter: Fix INTERP_STATS profiling code

[Serge S. Gulin (@gulin.serge)]

Serge S. Gulin pushed to branch wip/T24603 at Glasgow Haskell Compiler / GHC


Commits:
66c7f656 by Matthew Pickering at 2025-02-06T17:15:25-05:00
interpreter: Fix INTERP_STATS profiling code

The profiling code had slightly bitrotted since the last time it was
used. This just fixes things so that if you toggle the INTERP_STATS
macro then it just works and prints out the stats.

Fixes #25695

- - - - -
f71c2835 by Matthew Pickering at 2025-02-06T17:16:02-05:00
perf: Key the interpreter symbol cache by Name rather than FastString

Profiles showed that about 0.2s was being spend constructing the keys
before looking up values in the old symbol cache.

The performance of this codepath is critical as it translates directly
to a delay when a user evaluates a function like `main` in the
interpreter.

Therefore we implement a solution which keys the cache(s) by `Name`
rather than the symbol directly, so the cache can be consulted before
the symbol is constructed.

Fixes #25731

- - - - -
8f8d3a90 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by IO operations

Addresses part of #25452.

Addresses core-libraries-committee#305.

- - - - -
28600825 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by System.Timeout

Addresses part of #25452.

Addresses core-libraries-committee#305.

- - - - -
8a249827 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label signal handling threads

Addresses part of #25452.

Addresses core-libraries-committee#305.

- - - - -
26af26f0 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label Windows console event handling threads

Addresses part of #25452.

Addresses core-libraries-committee#305.

- - - - -
bf9c3d4f by Ben Gamari at 2025-02-08T01:17:28-05:00
ghci: Label evaluation sandbox thread

Addresses part of #25452.

Addresses core-libraries-committee#305.

- - - - -
38f78ce5 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Add changelog entry for addition of thread labels

Addresses #25452.

Addresses core-libraries-committee#305.

- - - - -
c100deb5 by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Clean up style

This cleans up a number of stylistic inconsistencies although it's still
far from perfect.

- - - - -
c4a7680a by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Properly encapsulate GitLab predicates

- - - - -
52b6539b by M Farkas-Dyck at 2025-02-08T11:34:51-08:00
Avoid partiality in `Language.Haskell.Syntax.Expr`, `GHC.Hs.Expr`, `GHC.Rename.Expr`, etc.

In particular, use `NonEmpty` where appropriate:
- the argument of `FieldLabelString`
- the argument of `HsMultiIf`
- `grhssGRHSs`

Decreases overall compile-time allocation by about 0.1% in the benchmark suite (min -0.8%, max +0.3%).

Metric Decrease:
    T3294

- - - - -
a566da92 by Ben Gamari at 2025-02-10T03:21:49-05:00
gitlab-ci: Bump docker images

Closes #25693.

- - - - -
a7e23f01 by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Drop uses of head/tail

To silence warnings with GHC 9.10

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12752f0c by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Disable x-data-list-nonempty-unzip warning

- - - - -
e22a14fc by Simon Peyton Jones at 2025-02-11T16:21:10+00:00
Deal correctly with Given CallStack constraints

As #25675 showed, the CallStack solving mechanism was failing
to account for Given CallStack constraints.

This small patch fixes it and improves the Notes.

Small improvement to GHCi debugger output in break011, break024,
which is discussed on the MR !13883

- - - - -
db3e810f by Simon Peyton Jones at 2025-02-12T09:12:30-05:00
Fix inlineBoringOk again

This MR fixes #25713, which turned out to be a consequence of not
completing #17182.

I think I have now gotten it right.  See the new
  Note [inlineBoringOk]

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ef0e6cfc by Ben Gamari at 2025-02-17T19:20:09-05:00
testsuite: Mark T23071 and T2047 as fragile on FreeBSD

These inexplicably fail on FreeBSD on CI. Sadly I am unable to reproduce
this locally but regardless this is holding up Marge so I will mark them
as fragile for now.

Addresses #25751.

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7596675e by Jens Petersen at 2025-02-18T08:53:08-05:00
hp2ps Utilities.c: include stdlib.h instead of extern malloc and realloc

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975d932c by Rodrigo Mesquita at 2025-02-18T08:53:45-05:00
Inline join points for rhs without free vars

While investigating #25170, we ran into a program (T16473) that allocated 67%
more because of a join point that failed to inline.

Note [Duplicating join points] explains why we want to be conservative
when inlining join points, using as an example a join point that
captures a free variable `f` that becomes available in the continuation
`blah` for further optimisations, as opposed to being lambda-abstracted.

However, when the RHS of the join point has no free variables and is
trivial, the same argument does not apply, and there's nothing to gain
from preserving it.

On the contrary, not inlining these trivial join points such as
    $j f x = K f x |> co
can be actively harmful as they prevent useful optimisations from firing
on the known constructor application. #25723 is such an example.

Therefore, we've extended `uncondInlineJoin` to allow duplicating such closed
trivial join points. See the updated Note [Duplicating join points] for
further details.

Additionally, merge the guards in uncondInlineJoin for point DJ3(b) anad DJ3(c) of
Note [Duplicating join points] to avoid an unnecessary traversal in the
call to `collectArgs`; it's also more uniform.

Co-authored-by: Simon Peyton Jones <simon.peytonjones at gmail.com>

Fixes #25723

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78de1a55 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Scrub some partiality in `GHC.Tc.Gen.Match`.

In particular, we construct a list of the same length as another list, then loop over both and panic if their lengths are unequal. We can avoid this.

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1dfe9325 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Make list of `ParStmtBlock` in `ParStmt` `NonEmpty`.

In the ParStmt constructor Language.Haskell.Syntax.Expr.StmtLR, the 2nd argument, the list of ParStmtBlocks, must be NonEmpty; make it so.

- - - - -
0e3575b5 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
GHC.Tc.Gen.Match: Added type signatures for `loop` functions.

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c9ffcfee by sternenseemann at 2025-02-18T08:55:14-05:00
GHC: fix reference to function in Note [Target code interpreter]

As far as I could tell, setSessionDynFlags doesn't deal with hsc_interp.
Also added a backreference so this will be updated in the future.

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ab77fc8c by sheaf at 2025-02-18T08:55:57-05:00
Account for skolem escape in mightEqualLater

This commit:

  1. Refactors checkTyEqRhs to allow it be called in pure contexts,
     which means it skips doing any on-the-fly promotion.
  2. Calls checkTyEqRhs in mightEqualLater to check whether it a
     MetaTv can unify with a RHS or whether that would cause e.g.
     skolem escape errors or concreteness errors.

Fixes #25744

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cb8a06a4 by Sylvain Henry at 2025-02-18T08:56:52-05:00
Remove a bunch of Makefiles from old build system

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e12d6b39 by M Farkas-Dyck at 2025-02-18T08:57:37-05:00
Totalize `GHC.HsToCore.Match.matchWrappers.initNablasGRHSs`.

Converting from `NonEmpty` to `[]` and back is totally needless.

- - - - -
cd2be3be by Matthew Pickering at 2025-02-18T08:58:14-05:00
interpreter: Always print uniques for BCO_NAME labels

In the previous commit I omitted to include the unique, which still
makes it very difficult to trace back where the BCO came from.

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c4e112fc by Matthew Pickering at 2025-02-18T08:58:51-05:00
interpreter: Fix overflows and reentrancy in statistics calculation

1. Use unsigned long for counter, as they can easily overflow if you are
   running a long benchmark.
2. Make interp_shutdown reentrant by copying the command frequency table
   into an array.

Fixes #25756

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70ac6222 by M Farkas-Dyck at 2025-02-18T14:22:06-08:00
Use `Foldable1` where appropriate, avoiding much needless panicking.

In some cases, where not readily feasible to modify code to use `NonEmpty`, merely use `expectNonEmpty` to make explicit we are panicking if we have an empty list.

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a3f0a506 by Sylvain Henry at 2025-02-19T05:27:30-05:00
Testsuite: fix deprecation warning

> DeprecationWarning: 'count' is passed as positional argument

- - - - -
ef5470a2 by Ben Gamari at 2025-02-19T16:30:53+00:00
Cmm/Parser: Add surface syntax for Mul2 MachOps

These are otherwise very hard to test in isolation.

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59b9307b by Cheng Shao at 2025-02-19T20:24:40-05:00
testsuite: fix InternalCounters test with +debug_ghc

The `InternalCounters` test case fails when ghc is built with
`+debug_ghc`. This patch skips it in that case and allows the
testsuite to pass for the `+debug_ghc` flavour transformer.

- - - - -
aa69187d by M Farkas-Dyck at 2025-02-19T20:25:31-05:00
Scrub a use of `head` in `GHC.Driver.Make.downsweep_imports.checkDuplicates`.

- - - - -
1c8e608a by Cheng Shao at 2025-02-21T20:18:41-05:00
compiler: use fromAscList when applicable

This patch uses fromAscList (with O(n) complexity) instead of fromList
(with O(nlogn) complexity) in certain Binary instances. It's safe to
do so since the corresponding serialization logic is based on toList
(same as toAscList).

- - - - -
549e0aff by Ben Gamari at 2025-02-21T20:19:18-05:00
rts/linker/MachO: Mark internal symbols as static

There is no reason why these should have external linkage.

- - - - -
fbf3d020 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: bump dyld v8 heap size limit

This patch sets `--max-old-space-size=65536` as wasm dyld shebang
arguments to lessen v8 heap pressure in certain workloads that load
the full ghc package. It doesn't really commit 64G memory but it does
help reduce v8 gc overhead.

- - - - -
cb60da24 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: fix dyld for shared libraries created by llvm 20.x

This patch fixes wasm dyld script for shared libraries created by llvm
20.x. The __wasm_apply_data_relocs function is now optional and may be
omitted for shared libraries without any runtime relocatable data
segments, so only call __wasm_apply_data_relocs when it's present.

- - - - -
7eea38c8 by Cheng Shao at 2025-02-22T07:41:37-05:00
driver: fix wasm backend sysroot lookup logic when -flto is passed

For the wasm target, the driver calls `wasm32-wasi-clang
--print-search-dirs` and finds the sysroot directory that contains
libc.so etc, then passes the directory path to dyld. However, when GHC
is configured with -flto as a part of C/C++ compiler flags, the clang
driver would insert a llvm-lto specific directory in the
--print-search-dirs output and the driver didn't take that into
account. This patch fixes it and always selects the non-lto sysroot
directory to be passed to dyld. This is one small step towards
supporting building all cbits with lto for wasm.

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f3bfe31e by Cheng Shao at 2025-02-23T14:06:25-05:00
wasm: add Note [Variable passing in JSFFI] as !13583 follow up

This patch adds a note to explain how the magic variables like
`__ghc_wasm_jsffi_dyld` are brought into scope of JSFFI code snippets,
as follow up work of !13583.

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c318be56 by Cheng Shao at 2025-02-23T14:07:02-05:00
libffi: update to 3.4.7

Bumps libffi submodule.

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33aca30f by sheaf at 2025-02-25T08:58:46-05:00
LLVM: account for register type in funPrologue

We were not properly accounting for the live register type of
global registers in GHC.CmmToLlvm.CodeGen.funPrologue. This meant that
we could allocated a register at type <4 x i32> but try to write to it
at type <8 x i16>, which LLVM doesn't much like.

This patch fixes that by inserting intermerdiate casts when necessary.

Fixes #25730

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0eb58b0e by sheaf at 2025-02-25T08:59:29-05:00
base: make Data.List.NonEmpty.unzip match Data.List

This commit makes Data.List.NonEmpty.unzip match the implementation
of Data.List, as was suggested in approved CLC proposal #107.

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f4da90f1 by Matthew Pickering at 2025-02-25T14:11:21-05:00
interpreter: Fix underflow frame lookups

BCOs can be nested, resulting in nested BCO stack frames where the inner most
stack frame can refer to variables stored on earlier stack frames via the
PUSH_L instruction.

|---------|
|  BCO_1  | -<-┐
|---------|
 .........     |
|---------|    | PUSH_L <n>
|  BCO_N  | ->-┘
|---------|

Here BCO_N is syntactically nested within the code for BCO_1 and will result
in code that references the prior stack frame of BCO_1 for some of it's local
variables. If a stack overflow happens between the creation of the stack frame
for BCO_1 and BCO_N the RTS might move BCO_N to a new stack chunk while leaving
BCO_1 in place, invalidating a simple offset based reference to the outer stack
frames.
Therefore `ReadSpW` first performs a bounds check to ensure that accesses onto
the stack will succeed. If the target address would not be a valid location for
the current stack chunk then `slow_spw` function is called, which dereferences
the underflow frame to adjust the offset before performing the lookup.

               ┌->--x   |  CHK_1  |
|  CHK_2  |    |    |   |---------|
|---------|    |    └-> |  BCO_1  |
| UD_FLOW | -- x        |---------|
|---------|    |
| ......  |    |
|---------|    | PUSH_L <n>
|  BCO_ N | ->-┘
|---------|

Fixes #25750

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c3f2d284 by Vladislav Zavialov at 2025-02-25T14:11:58-05:00
Remove ArgPatBuilder

ArgPatBuilder in Parser/PostProcess.hs became redundant with the
introduction of InvisPat (36a75b80eb).

This small refactoring removes it.

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0f2241e9 by sheaf at 2025-02-25T19:23:21-05:00
Propagate long distance info to guarded let binds

This commit ensures that we propagate the enclosing long distance
information to let bindings inside guards, in order to get accurate
pattern-match checking warnings, in particular incomplete record
selector warnings.

Example:

  data D = K0 | K1 { fld :: Int }
  f :: D -> Int
  f d@(K1 {})
    | let i = fld d
    = i
  f _ = 3

We now correctly recognise that the field selector 'fld' cannot fail,
due to the outer pattern match which guarantees that the value 'd' has
the field 'fld'.

Fixes #25749

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64b0d4d0 by Fangyi Zhou at 2025-02-25T19:24:07-05:00
wasm: use primitive opcodes for fabs and sqrt

- Add new `WasmInstr` constructor `WasmSqrt` for sqrt, corresponding to
  primitivie operations in wasm.
- When lowering CallishMachOp, use `WasmAbs` and `WasmSqrt` for F32 and
  F64 fabs and sqrt.

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272eaef0 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building stage1 haddock for cross ghc

This commit enables building stage1 haddock for cross ghc. Without
this change, hadrian would panic with "Unknown program" error when
building the _build/stage1/bin/cross-prefix-haddock program needed by
the docs-haddock target, even if it only needs to copy from
_build/stage0/bin/cross-prefix-haddock.

- - - - -
a794e733 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building docs for cross targets

Hadrian used to omit the docs target as a part of binary-dist-dir for
cross targets. This commit enables docs to be built as a part of cross
bindists and it works just fine in CI.

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6dba56e1 by Cheng Shao at 2025-02-25T19:24:43-05:00
ci: build haddock/sphinx-html for wasm jobs

This commit enables building haddock & sphinx-html documentation for
wasm targets. The docs are useful for end users and should be tested
in CI.

I've omitted pdf & manpage generation for the wasm target; I've never
found the pdf version of docs to be useful, and the manpage only
contains `ghc.1` where we really want `wasm32-wasi-ghc.1` but that
should be a separate issue to fix.

- - - - -
2d6a63ab by Cheng Shao at 2025-02-25T19:25:20-05:00
ghci: remove unused showBreakArray function

GHCi.BreakArray.showBreakArray is not used anywhere, hence the
housecleaning.

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b228fcb5 by Cheng Shao at 2025-02-25T19:25:57-05:00
ghc-heap: fix HalfWord incompatible Binary instances for cross GHC

ghc-heap defines HalfWord as Word32/Word16 depending on host word
size. For cross GHC with different host/target word sizes, the Binary
instances are incompatible and breaks iserv serialization of any
message type that involves HalfWord, breaking the ghci debugger. This
patch fixes the issue and has been tested to fix ghci debugger
functionality of the wasm backend. Fixes #25420 #25781.

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ec02f8c2 by Rodrigo Mesquita at 2025-02-26T11:03:38-05:00
ghci-debugger: display thunks provenance if avail

Improves reporting on ghci breakpoints when IPE information is available
by printing, next to the thunk, the source file and src span where the
thunk originated.

Closes #25746

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6acaff2b by Vladislav Zavialov at 2025-02-26T11:04:15-05:00
Tidy up error messages for TypeAbstractions

1. Print the '@' symbol before invisible patterns and improve phrasing:

      T24557c.hs:8:4: error: [GHC-11983]
     -    Invisible type pattern pat is not allowed here
     +    Illegal invisible type pattern: @pat
     +    An invisible type pattern must occur in an argument position.

2. Use a single error code for all type abstractions deemed illegal
   due to the TypeAbstractions extension being disabled.

   Before this change:
     * [GHC-78249] was used in function equations, lambdas
     * [GHC-17916] was used in constructor patterns

   After this change:
     * [GHC-78249] is used to report all illegal type abstractions
     * [GHC-17916] is no longer used

   There was no reason for both error codes to exist and this distinction
   was a source of complexity in GHC/Tc/Errors/* and GHC/Rename/Pat.hs

3. Group the different "invisible type pattern" error constructors
   under a single parent constructor, TcRnIllegalInvisibleTypePattern
   containing BadInvisPatReason

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1ce9502e by Ben Gamari at 2025-02-27T04:48:29-05:00
haddock/doc: Drop version and release

We currently have no way of keeping this up-to-date with the project version
- - - - -
7f358f25 by Matthew Pickering at 2025-02-27T04:49:06-05:00
testsuite: Add test for :steplocal performance

This adds a simple test which exercises #25779

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a6a3ffa6 by Sven Tennie at 2025-02-27T23:34:47-05:00
Do not deallocate stack for jump/switch table jumps

Though the name is misleading, we consider them to be branching. For
branch instructions we do not deallocate (parts of) the stack, but keep
the stack pointer (sp) intact.

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39e51ddb by Sven Tennie at 2025-02-27T23:34:47-05:00
Add reproducer for dealloc instructions in switch table jump expressions (#25733)

Measures taken to make the test stable:

- Use 'a' as variable prefix, because X86 32bit stumbled over the
variable name 'i386'
- Flush stdout to make test output deterministic
- Use type annotations to support 32bit archs

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d427df93 by Sylvain Henry at 2025-02-27T23:35:30-05:00
Remove redundant location strings in expectJust and friends (#25743)

Now we can use HasDebugCallStack instead to avoid cluttering the code
with strings and to avoid maintaining those strings (e.g. renaming them
when functions are renamed...).

- - - - -
90f1190e by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Add export list to GHC.SysTools.Tasks

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ec826009 by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Pass --target to llvm-as

As noted in #25793, this is necessary due to potential ambiguity on
Apple machines with Rosetta.

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9c1647d1 by Andreas Klebinger at 2025-02-28T20:54:30-05:00
cmmMachOpFoldM: Add missing pattern matches for bitcasts.

Fixes #25771

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3b78e139 by John Ericson at 2025-03-03T15:27:39-05:00
Remove most of `GHC.Internal.Pack`

Since bd82ac9f4716e28b185758ae514691d5a50c003f when `GHC.Pack` was
deleted, it is no longer used except for one function by the RTS.

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b4fe0850 by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci: Don't set virtualCWD on every iteration

The calls to withVirtualCWD were introduced to fix #2973, but this bug
is no longer reproducible, even when `withVirtualCWD` is dropped.

This cleanup was originally motivated by the performance of :steplocal,
but the performance problem has now been fixed at its root in the next
commit.

Even then, `withVirtualCWD` seems to now be an unnecessary artifact, and
removing it simplifies the interpreter with no apparent drawbacks (testsuite is
also happy with this change)

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73ba1e6e by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci debugger: improve break/resume control flow

After interpreting bytecode (`evalStmt`), we may want to hand off
control to "GHCi.UI" in order to display an interactive break prompt:

1. When an /active/ breakpoint (one set with :break ...) is hit
2. At any breakpoint, when using :step from a breakpoint
3. At any breakpoint in the same function f, when :steplocal is called
  from a breakpoint in f
4. At any breakpoint in the same module, when :stepmodule is used

Whether to pass control to the UI is now fully determined by
`handleRunStatus` which transforms an `EvalStatus_` into an
`ExecResult`. When `ExecBreak` is returned from `handleRunStatus` to
GHCi, it always means GHCi breaks.

`handleRunStatus` determines whether to loop and resume evaluation right away, or
when to return to GHCi (by returning `ExecBreak` or `ExecComplete`).
- (1) is queried using the `BreakpointStatus` message (the
  `breakpointStatus` call)
- (2,3,4) are determined by the predicate `breakHere step span`, which
  inspects the improved `SingleStep` type to determine whether we care
  about this breakpoint even if it is not active.

This refactor solves two big performance problems with the previous control flow:
- We no longer call `withArgs/withProgram` repeatedly in the
  break/resume loop, but rather just once "at the top".
- We now avoid computing the expensive `bindLocalsAtBreakpoint` for
  breakpoints we'd never inspect.

In the interpreter_steplocal test added, calling `:steplocal` after breaking on `main = fib 25`
now takes 12 seconds rather than 49 seconds on my machine.

```
interpreter_steplocal(ghci) ghc/alloc  6,124,821,176    540,181,392 -91.2% GOOD
```

Fixes #25779

-------------------------
Metric Decrease:
    interpreter_steplocal
-------------------------

- - - - -
c78d8f55 by Cheng Shao at 2025-03-03T20:54:41+00:00
rts: fix top handler closure type signatures

This commit fixes the runIO/runNonIO closure type signatures in the
RTS which should be extern StgClosure. This allows us to remove an
unnecessary type cast in the C foreign desugaring logic, as well as
unneeded complications of JSFFI desugaring logic that also needs to
generate C stubs that may refer to those top handler closures.
Otherwise, we'll have to take special care to avoid generating "extern
StgClosure" declarations for them as we would for other closures, just
to avoid conflicting type signature error at stub compile time.

- - - - -
a204df3a by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: allow arbitrary label string for JSFFI exports

This commit allows arbitrary label string to appear in a foreign
export declaration, as long as the calling convention is javascript.
Well, doesn't make sense to enforce it's a C function symbol for a
JSFFI declaration anyway, and it gets in the way of implementing the
"sync" flavour of exports.

- - - - -
03ebab52 by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: wasm backend JSFFI sync exports

This commit implements the synchronous flavour of the wasm backend
JSFFI exports:

- `foreign export javascript "foo sync"` exports a top-level Haskell
  binding as a synchronous JS function
- `foreign import javascript "wrapper sync"` dynamically exports a
  Haskell function closure as a synchronous JS function
- `foreign import javascript unsafe` is now re-entrant by lowering to
  a safe ccall
- Also fix the issue that JSFFI dynamic exports didn't really work in
  TH & ghci (#25473)

- - - - -
b6ae908b by Cheng Shao at 2025-03-03T20:54:41+00:00
testsuite: test wasm backend JSFFI sync exports

This commit repurposes some existing JSFFI test cases to make them
cover JSFFI sync exports as well.

- - - - -
edae2874 by Cheng Shao at 2025-03-03T20:54:41+00:00
docs: document wasm backend JSFFI sync exports

This commit updates wasm backend documentation to reflect the new
JSFFI sync exports feature.

- - - - -
9b54eecb by Cheng Shao at 2025-03-03T20:56:21+00:00
wasm: add error message to WouldBlockException

This commit attaches an error message to WouldBlockException, for now
the error message consists of the JS async import code snippet that
thunk is trying to block for. This is useful for debugging synchronous
callbacks that accidentally call an async JS function.

- - - - -
c331eebf by Cheng Shao at 2025-03-04T09:11:45-05:00
compiler: avoid overwriting existing writers in putWithTables

This patch makes `putWithTables` avoid overwriting all existing
UserData writers in the handle. This is crucial for GHC API users that
use putWithUserData/getWithUserData for serialization logic that
involve Names.

- - - - -
e9b7802b by Matthew Pickering at 2025-03-04T09:12:21-05:00
ghci: Serialise mi_top_env

When loading core from interface files (or from a bytecode object in
future) it's important to store what the top-level context of a module
is.
Otherwise, when you load the module into GHCi from the interface files,
only exported identifiers from the top-level module are in scope on the
repl.

See the added test which demonstrates what this enables.

The context at the GHCi prompt is everything that's in-scope in the
TopEnvIface module. Since TopEnvIface imports identifier "a", we can
evaluate "a" in the repl.

In addition to all this, we can use this information in order to
implement reifyModule in a more principled manner.

This becomes even more important when you're debugging and what to set
break-points on functions which are not imported.

- - - - -
73e02068 by Matthew Pickering at 2025-03-04T09:12:21-05:00
Implement reifyModule in terms of mi_top_env

mi_top_env provides precisely the information that reifyModule needs,
the user written imports.

This is important as it unblocks !9604 and #22188

Fixes #8489

- - - - -
0a99825d by Ben Gamari at 2025-03-04T09:12:57-05:00
hadrian: Refactor handling of test suite environment

Previously we would set the environment variables used to run the
testsuite driver using `setEnv` to set them in the Hadrian process.
While looking into failures of a fix to #25752 I noticed this and took
the opportunity to refactor.

- - - - -
7ca72844 by Alan Zimmerman at 2025-03-04T09:13:34-05:00
[EPA] Sync with the ghc-exactprint repo

This brings it into line with the changes in
https://hackage.haskell.org/package/ghc-exactprint-1.12.0.0

But also keeps the latest changes from master.

- - - - -
8f6cc90c by Matthew Pickering at 2025-03-05T04:48:02-05:00
perf: Speed up the bytecode assembler

This commit contains a number of optimisations to the bytecode
assembler. In programs which generate a large amount of bytecode, the
assembler is called a lot of times on many instructions.

1. Specialise the assembleI function for the two intepreters to avoid
having to materialise the intermediate free-monad like structure.
2. Directly compute the UArray and SmallArray needed rather than going
   via the intermediate SizedSeq
3. Use optimised monads
4. Define unrolled "any" and "mapM6" functions which can be inlined
   and avoid calling recursive functions.

The resulting generated code is much more direct.

Before:

./ByteCodeAsm /home/matt/ghc-profiling-light/_build/stage1/lib/ +RTS  -s
  48,923,125,664 bytes allocated in the heap
     678,221,152 bytes copied during GC
         395,648 bytes maximum residency (2 sample(s))
          50,040 bytes maximum slop
               6 MiB total memory in use (0 MiB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0     11731 colls,     0 par    0.419s   0.425s     0.0000s    0.0004s
  Gen  1         2 colls,     0 par    0.001s   0.001s     0.0007s    0.0012s

  INIT    time    0.000s  (  0.000s elapsed)
  MUT     time    6.466s  (  6.484s elapsed)
  GC      time    0.421s  (  0.426s elapsed)
  EXIT    time    0.000s  (  0.000s elapsed)
  Total   time    6.887s  (  6.910s elapsed)

After:

   1,518,321,200 bytes allocated in the heap
       4,299,552 bytes copied during GC
         322,288 bytes maximum residency (2 sample(s))
          50,280 bytes maximum slop
               6 MiB total memory in use (0 MiB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0       369 colls,     0 par    0.003s   0.003s     0.0000s    0.0002s
  Gen  1         2 colls,     0 par    0.001s   0.001s     0.0007s    0.0012s

  INIT    time    0.001s  (  0.001s elapsed)
  MUT     time    0.465s  (  0.466s elapsed)
  GC      time    0.004s  (  0.004s elapsed)
  EXIT    time    0.000s  (  0.000s elapsed)
  Total   time    0.470s  (  0.471s elapsed)

- - - - -
f2d43e11 by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: expose all TH packages from proper GHC.Boot.* modules

Previously we defined some modules here in the GHC.Internal namespace.
Others were merely re-exposed from GHC.Internal.

Re-exposed modules weren't handled correctly by Haddock, so the
Haddocks for the `template-haskell` library couldn't see them.
This change also makes the home package of these modules a bit clearer.

Work towards #25705

- - - - -
91ef82df by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: fix synopsis formatting

`@...@` syntax doesn't seem to work in synposes and is just kept by
Haddock verbatim.

- - - - -
eb9fe1ec by Brandon Chinn at 2025-03-05T04:49:17-05:00
Collapse string gaps as \& (#25784)

In 9.10, "\65\ \0" would result in "A0", but in 9.12, it results in
"\650", due to the string refactoring I did in !13128. Previously, we
were resolving escape codes and collapsing string gaps as we come across
them, but after the refactor, string processing is broken out into
phases, which is both more readable and useful for multiline strings.

- - - - -
8037f487 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: make JSVal abstract in GHC.Wasm.Prim

This commit makes JSVal an abstract type in the export list of
GHC.Wasm.Prim. JSVal's internal representation is supposed to be a non
user facing implementation detail subject to change at any time. We
should only expose things that are newtypes of JSVal, not JSVal
itself.

- - - - -
4f342431 by Cheng Shao at 2025-03-05T04:49:54-05:00
wasm: make JSVal internal Weak# point to lifted JSVal

JSVal has an internal Weak# with the unlifted JSVal# object as key to
arrange its builtin finalization logic. The Weak# used to designate
Unit_closure as a dummy value; now this commit designates the lifted
JSVal closure as the Weak# value. This allows the implementation of
mkWeakJSVal which can be used to observe the liveliness of a JSVal and
attach a user-specified finalizer.

- - - - -
55af20e6 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: add mkWeakJSVal

This commit adds a mkWeakJSVal function that can be used to set up a
Weak pointer with a JSVal key to observe the key's lifetime and
optionally attach a finalizer.

- - - - -
8273d7d1 by Matthew Pickering at 2025-03-05T04:50:30-05:00
simplifier: Zap Id unfoldings before constructing InScopeSet in simpleOptExpr

Care must be taken to remove unfoldings from `Var`s collected by exprFreeVars
before using them to construct an in-scope set hence `zapIdUnfolding` in `init_subst`.
Consider calling `simpleOptExpr` on an expression like

```
 case x of (a,b) -> (x,a)
```

* One of those two occurrences of x has an unfolding (the one in (x,a), with
unfolding x = (a,b)) and the other does not. (Inside a case GHC adds
unfolding-info to the scrutinee's Id.)
* But exprFreeVars just builds a set, so it's a bit random which occurrence is collected.
* Then simpleOptExpr replaces each occurrence of x with the one in the in-scope set.
* Bad bad bad: then the x in  case x of ... may be replaced with a version that has an unfolding.

Fixes #25790

- - - - -
07fe6d1d by Rodrigo Mesquita at 2025-03-05T04:51:07-05:00
docs: Fix ghci :doc documentation

Fixes #25799

- - - - -
a510b861 by Matthew Pickering at 2025-03-06T11:43:23+00:00
Add flag to control whether self-recompilation information is written to interface

This patch adds the flag -fwrite-if-self-recomp which controls whether
interface files contain the information necessary to answer the
question:

  Do I need to recompile myself or is this current interface file
  suitable?

Why? Most packages are only built once either by a distribution or cabal
and then placed into an immutable store, after which we will never ask
this question. Therefore we can derive two benefits from omitting this
information.

* Primary motivation: It vastly reduces the surface area for creating
  non-deterministic interface files. See issue #10424 which motivated a
  proper fix to that issue. Distributions have long contained versions
  of GHC which just have broken self-recompilation checking (in order to
  get deterministic interface files).

* Secondary motivation: This reduces the size of interface files
  slightly.. the `mi_usages` field can be quite big but probably this
  isn't such a great benefit.

* Third motivation: Conceptually clarity about which parts of an
  interface file are used in order to **communicate** with subsequent
  packages about the **interface** for a module. And which parts are
  used to self-communicate during recompilation checking.

The main tracking issue is #22188 but fixes issues such as #10424 in a
proper way.

- - - - -
5b05c27b by Matthew Pickering at 2025-03-06T11:43:23+00:00
Disable self recomp in release flavour

The interface files that we distribute should not contain any
information which is used by the recompilation checking logic since
source file will never be compiled again.

I am not 100% sure this won't cause unexpected issues, there many be
downstream consumers which are incorrectly using the information from
interfaces, but this commit can be reverted if we detect issues.

- - - - -
1d4c9824 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add surface syntax for Word/Float bitcast ops

- - - - -
25c4a2a2 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add constant-folding for Word->Float bitcasts

- - - - -
30bdea67 by Matthew Craven at 2025-03-06T18:11:59-05:00
Add tests for #25771

- - - - -
44bf5fa1 by Matthew Pickering at 2025-03-07T13:48:18+00:00
iface: Store flags in interface files

When reporting the reason why a module is recompiled (using
`-dump-hi-diffs`), it is much more informative to inform the user about
which flag exactly has changed, rather than just an opaque reference to
a hash.

Now, when the user enables `-fwrite-if-self-recomp-flags`
there is a difference the precise part of the flags is
reported:

```
codegen flags changed:
before: [Opt_NoTypeableBinds, Opt_OmitYields]
after: [Opt_NoTypeableBinds, Opt_OmitYields, Opt_DictsStrict]
```

Fixes #25571

- - - - -
324222bd by Oleg Grenrus at 2025-03-08T08:50:18-05:00
Run fix-whitespace on compiler/

https://hackage.haskell.org/package/fix-whitespace

IMO this should be included into lint suite

- - - - -
1e53277a by sheaf at 2025-03-08T16:32:25-05:00
Allow defaulting of representational equalities

This commit generalises the defaulting of equality constraints that
was introduced in 663daf8d (with follow-up in 6863503c) to allow
the defaulting of *representational* equality constraints.

Now we default a representational equality

  ty1 ~R# ty2

by unifying ty1 ~# ty2.

This allows the following defaulting to take place:

  - Coercible alpha[tau] Int ==> alpha := Int
  - Coercible (IO beta[tau]) (IO Char) ==> beta := Char

See Note [Defaulting representational equalities] in GHC.Tc.Solver.Default
for more details.

Fixes #21003

- - - - -
d6c40afc by Andreas Klebinger at 2025-03-08T16:33:02-05:00
Revert "Use `Infinite` in unique generation, and clean up some other partial uni patterns as well."

This reverts commit 643dd3d86968c527ba07ece9cc337728dbdfe2a0.

As described in #25817 this commit introduced a subtle bug in AArch64
code generation. So for the time being I will simply revert it
wholesale.

- - - - -
68310e11 by Andreas Klebinger at 2025-03-08T16:33:39-05:00
Properly describe acceptance window for stat tests.

The relative metric is already in %, so no need to multiply by 100.

- - - - -
cca68421 by Cheng Shao at 2025-03-08T22:04:42-05:00
wasm: do not use wasm type reflection in dyld

The wasm dynamic linker used to depend on v8's experimental wasm type
reflection support to generate stub functions when treating GOT.func
items that aren't exported by any loaded library yet. However, as we
work towards wasm ghci browser mode (#25399), we need to ensure the
wasm dyld logic is portable across browsers. So this commit removes
the usage of wasm type reflection in wasm dyld, and it shall only be
added many months later when this feature is widely available in
browsers.

- - - - -
75fcc5c9 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: don't create a wasm global for dyld poison

There's a much more efficient way to convert an unsigned i32 to a
signed one. Thanks, o3-mini-high.

- - - - -
fd40eaa1 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: revamp JSFFI internal implementation and documentation

This patch revamps the wasm backend's JSFFI internal implementation
and documentation:

- `JSValManager` logic to allocate a key is simplified to simple
  bumping. According to experiments with all major browsers, the
  internal `Map` would overflow the heap much earlier before we really
  exhaust the 32-bit key space, so there's no point in the extra
  complexity.
- `freeJSVal` is now idempotent and safe to call more than once. This
  is achieved by attaching the `StablePtr#` to the `JSVal#` closure
  and nullifying it when calling `freeJSVal`, so the same stable
  pointer cannot be double freed.
- `mkWeakJSVal` no longer exposes the internal `Weak#` pointer and
  always creates a new `Weak#` on the fly. Otherwise by finalizing
  that `Weak#`, user could accidentally drop the `JSVal`, but
  `mkWeakJSVal` is only supposed to create a `Weak` that observes the
  `JSVal`'s liveliness without actually interfering it.
- `PromisePendingException` is no longer exported since it's never
  meant to be caught by user code; it's a severe bug if it's actually
  raised at runtime.
- Everything exported by user-facing `GHC.Wasm.Prim` now has proper
  haddock documentation.
- Note [JSVal representation for wasm] has been updated to reflect the
  new JSVal# memory layout.

- - - - -
5c4d297b by Serge S. Gulin at 2025-03-09T18:15:34+04:00
Support for ARM64 Windows (LLVM-enabled) (fixes #24603)

submodule

Co-authored-by: Cheng Shao <terrorjack at type.dance>
Co-authored-by: Dmitrii Egorov <egorov.d.i at icloud.com>
Co-authored-by: Andrei Borzenkov <root at sandwitch.dev>

- - - - -
ed3b0ec4 by Serge S. Gulin at 2025-03-09T18:22:01+04:00
Basic NCG support for HelloWorld

- - - - -
3d4f0dd9 by Serge S. Gulin at 2025-03-09T18:22:02+04:00
Remove trailing whtespace to make CI greener
- - - - -


447 changed files:

- .gitlab-ci.yml
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/upload_ghc_libs.py
- compiler/GHC.hs
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Liveness.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/ProcPoint.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/PPC/Instr.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Base.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
- compiler/GHC/CmmToAsm/Reg/Linear/AArch64.hs
- compiler/GHC/CmmToAsm/Reg/Linear/Base.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Wasm/Asm.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/RegInfo.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/LateCC/TopLevelBinds.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/CallerCC/Types.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/StaticArgs.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCon/Env.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/UsageEnv.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/FastString/Env.hs
- compiler/GHC/Data/FlatBag.hs
- compiler/GHC/Data/Graph/Color.hs
- compiler/GHC/Data/Graph/Directed.hs
- compiler/GHC/Data/Graph/Directed/Reachability.hs
- compiler/GHC/Data/Graph/Inductive/Graph.hs
- + compiler/GHC/Data/List.hs
- + compiler/GHC/Data/List/NonEmpty.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/SmallArray.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Flags.hs
- + compiler/GHC/Driver/IncludeSpecs.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Specificity.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/GuardedRHSs.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Ext/Ast.hs
- + compiler/GHC/Iface/Flags.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Flags.hs
- + compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/JS/Make.hs
- compiler/GHC/JS/Opt/Expr.hs
- compiler/GHC/JS/Opt/Simple.hs
- compiler/GHC/JS/Ppr.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Llvm/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/String.hs
- compiler/GHC/Platform/LoongArch64.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Eval/Types.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- + compiler/GHC/Runtime/Interpreter/Types/SymbolCache.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/EnforceEpt.hs
- compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Stg/Lift/Analysis.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/TagCheck.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Deriv/Functor.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole/FitTypes.hs
- compiler/GHC/Tc/Errors/Hole/Plugin.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Class.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Types/TcRef.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Avail.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Name.hs
- compiler/GHC/Types/Name/Env.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/PkgQual.hs
- compiler/GHC/Types/ProfAuto.hs
- compiler/GHC/Types/SafeHaskell.hs
- compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/Unique/Supply.hs
- compiler/GHC/Types/Var/Env.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/ModIface.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- compiler/GHC/Unit/State.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Misc.hs
- compiler/GHC/Utils/Unique.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/ghc.cabal.in
- distrib/configure.ac.in
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/ghci.rst
- docs/users_guide/phases.rst
- docs/users_guide/wasm.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Monad.hs
- hadrian/bindist/Makefile
- hadrian/cfg/system.config.in
- hadrian/doc/flavours.md
- hadrian/src/Flavour.hs
- hadrian/src/Hadrian/Utilities.hs
- hadrian/src/Oracles/ModuleFiles.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Dependencies.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Release.hs
- hadrian/src/Settings/Parser.hs
- libffi-tarballs
- libraries/Cabal
- libraries/Win32
- libraries/base/changelog.md
- libraries/base/src/Control/Concurrent.hs
- libraries/base/src/Data/List/NonEmpty.hs
- libraries/base/src/System/CPUTime/Windows.hsc
- libraries/base/src/System/Timeout.hs
- libraries/base/tests/perf/encodingAllocations.hs
- libraries/directory
- + libraries/ghc-boot-th/GHC/Boot/TH/Lib.hs
- libraries/ghc-boot-th/GHC/Internal/TH/Lib/Map.hs → libraries/ghc-boot-th/GHC/Boot/TH/Lib/Map.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Lift.hs
- libraries/ghc-boot-th/GHC/Internal/TH/Ppr.hs → libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
- libraries/ghc-boot-th/GHC/Internal/TH/PprLib.hs → libraries/ghc-boot-th/GHC/Boot/TH/PprLib.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs
- + libraries/ghc-boot-th/GHC/Boot/TH/Syntax.hs
- libraries/ghc-boot-th/ghc-boot-th.cabal.in
- libraries/ghc-experimental/src/GHC/Wasm/Prim.hs
- libraries/ghc-heap/GHC/Exts/Heap/InfoTable/Types.hsc
- libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Windows/ConsoleEvent.hsc
- libraries/ghc-internal/src/GHC/Internal/Pack.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Exports.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Flag.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Imports.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Types.hs
- libraries/ghci/GHCi/BreakArray.hs
- libraries/ghci/GHCi/Message.hs
- libraries/ghci/GHCi/ObjLink.hs
- libraries/ghci/GHCi/Run.hs
- libraries/ghci/GHCi/TH.hs
- libraries/ghci/GHCi/TH/Binary.hs
- libraries/haskeline
- libraries/process
- libraries/template-haskell/Language/Haskell/TH/Lib.hs
- libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs
- libraries/template-haskell/Language/Haskell/TH/Ppr.hs
- libraries/template-haskell/Language/Haskell/TH/PprLib.hs
- libraries/template-haskell/Language/Haskell/TH/Quote.hs
- libraries/template-haskell/Language/Haskell/TH/Syntax.hs
- libraries/unix
- llvm-targets
- m4/fp_settings.m4
- m4/ghc_tables_next_to_code.m4
- rts/Interpreter.c
- rts/Interpreter.h
- rts/RtsMain.c
- rts/StgCRun.c
- rts/include/RtsAPI.h
- rts/linker/MachO.c
- rts/wasm/JSFFI.c
- rts/wasm/jsval.cmm
- rts/win32/veh_excn.c
- testsuite/driver/perf_notes.py
- testsuite/driver/testlib.py
- + testsuite/tests/cmm/opt/T25771.cmm
- + testsuite/tests/cmm/opt/T25771.stderr
- testsuite/tests/cmm/opt/all.T
- + testsuite/tests/cmm/should_run/JumpTableNoStackDealloc.hs
- + testsuite/tests/cmm/should_run/JumpTableNoStackDealloc.stdout
- + testsuite/tests/cmm/should_run/JumpTableNoStackDeallocGen.hs
- + testsuite/tests/cmm/should_run/JumpTableNoStackDealloc_cmm.cmm
- testsuite/tests/cmm/should_run/all.T
- testsuite/tests/codeGen/should_run/all.T
- testsuite/tests/count-deps/CountDepsAst.stdout
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/default/default-fail08.hs
- testsuite/tests/default/default-fail08.stderr
- + testsuite/tests/driver/self-recomp/Makefile
- + testsuite/tests/driver/self-recomp/SelfRecomp01.hs
- + testsuite/tests/driver/self-recomp/SelfRecomp02.hs
- + testsuite/tests/driver/self-recomp/SelfRecomp03.hs
- + testsuite/tests/driver/self-recomp/SelfRecomp04.hs
- + testsuite/tests/driver/self-recomp/SelfRecomp04.stdout
- + testsuite/tests/driver/self-recomp/all.T
- testsuite/tests/ghc-api/exactprint/T22919.stderr
- testsuite/tests/ghc-api/exactprint/ZeroWidthSemi.stderr
- testsuite/tests/ghci.debugger/scripts/break011.stdout
- testsuite/tests/ghci.debugger/scripts/break024.stdout
- testsuite/tests/ghci/should_run/Makefile
- + testsuite/tests/ghci/should_run/T25790.hs
- + testsuite/tests/ghci/should_run/T25790.script
- + testsuite/tests/ghci/should_run/TopEnvIface.hs
- + testsuite/tests/ghci/should_run/TopEnvIface.stdout
- + testsuite/tests/ghci/should_run/TopEnvIface2.hs
- testsuite/tests/ghci/should_run/all.T
- 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/interface-stability/template-haskell-exports.stdout
- testsuite/tests/jsffi/jsffigc.hs
- testsuite/tests/jsffi/jsffigc.mjs
- testsuite/tests/jsffi/jsffisleep.hs
- testsuite/tests/jsffi/jsffisleep.stdout
- testsuite/tests/jsffi/textconv.hs
- testsuite/tests/jsffi/textconv.mjs
- + testsuite/tests/llvm/should_run/T25730.hs
- + testsuite/tests/llvm/should_run/T25730.stdout
- + testsuite/tests/llvm/should_run/T25730C.c
- testsuite/tests/llvm/should_run/all.T
- testsuite/tests/module/mod185.stderr
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpParsedAstComments.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T20718.stderr
- testsuite/tests/parser/should_compile/T20846.stderr
- + testsuite/tests/parser/should_run/T25784.hs
- + testsuite/tests/parser/should_run/T25784.stdout
- testsuite/tests/parser/should_run/all.T
- + testsuite/tests/perf/compiler/T25723.hs
- + testsuite/tests/perf/compiler/T25723.stdout
- testsuite/tests/perf/compiler/all.T
- testsuite/tests/perf/compiler/hard_hole_fits.stderr
- + testsuite/tests/perf/compiler/interpreter_steplocal.hs
- + testsuite/tests/perf/compiler/interpreter_steplocal.script
- + testsuite/tests/perf/compiler/interpreter_steplocal.stdout
- + testsuite/tests/perf/should_run/ByteCodeAsm.hs
- testsuite/tests/perf/should_run/all.T
- + testsuite/tests/pmcheck/should_compile/T25749.hs
- testsuite/tests/pmcheck/should_compile/all.T
- testsuite/tests/primops/should_run/all.T
- testsuite/tests/printer/Test20297.stdout
- testsuite/tests/printer/Test24533.stdout
- + testsuite/tests/profiling/should_run/T25675.hs
- + testsuite/tests/profiling/should_run/T25675.stdout
- testsuite/tests/profiling/should_run/all.T
- testsuite/tests/rename/should_fail/T17594b.hs
- testsuite/tests/rename/should_fail/T17594b.stderr
- + testsuite/tests/rename/should_fail/T17594b_th.hs
- + testsuite/tests/rename/should_fail/T17594b_th.stderr
- testsuite/tests/rename/should_fail/T22478e.stderr
- testsuite/tests/rename/should_fail/all.T
- testsuite/tests/rep-poly/T14561b.stderr
- testsuite/tests/rep-poly/UnliftedNewtypesCoerceFail.stderr
- testsuite/tests/rts/all.T
- testsuite/tests/simplCore/should_compile/T22375DataFamily.stderr
- testsuite/tests/simplCore/should_compile/T24229a.stderr
- testsuite/tests/simplCore/should_compile/T24229b.stderr
- + testsuite/tests/simplCore/should_compile/T25713.hs
- + testsuite/tests/simplCore/should_compile/T25713.stderr
- testsuite/tests/simplCore/should_compile/all.T
- + testsuite/tests/th/EmptyGuard.hs
- + testsuite/tests/th/EmptyGuard.stderr
- + testsuite/tests/th/EmptyParStmt.hs
- + testsuite/tests/th/EmptyParStmt.stderr
- testsuite/tests/th/T24557a.stderr
- testsuite/tests/th/T24557b.stderr
- testsuite/tests/th/T24557c.stderr
- testsuite/tests/th/T24557d.stderr
- testsuite/tests/th/all.T
- + testsuite/tests/typecheck/should_compile/T21003.hs
- + testsuite/tests/typecheck/should_compile/T25744.hs
- testsuite/tests/typecheck/should_compile/all.T
- testsuite/tests/typecheck/should_fail/T10495.hs
- testsuite/tests/typecheck/should_fail/T10495.stderr
- testsuite/tests/typecheck/should_fail/T17594c.stderr
- testsuite/tests/typecheck/should_fail/T17594d.stderr
- testsuite/tests/typecheck/should_fail/T17594g.stderr
- testsuite/tests/typecheck/should_fail/T19109.stderr
- testsuite/tests/typecheck/should_fail/T23776.stderr
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
- − utils/deriveConstants/Makefile
- − utils/genprimopcode/Makefile
- − utils/ghc-pkg/Makefile
- utils/ghc-toolchain/exe/Main.hs
- utils/haddock/doc/conf.py
- utils/haddock/html-test/ref/QuasiExpr.html
- utils/haddock/html-test/ref/TH.html
- utils/haddock/html-test/ref/Threaded_TH.html
- − utils/hp2ps/Makefile
- utils/hp2ps/Utilities.c
- utils/hsc2hs
- − utils/iserv/Makefile
- utils/jsffi/dyld.mjs
- utils/jsffi/post-link.mjs
- utils/jsffi/prelude.mjs
- utils/llvm-targets/gen-data-layout.sh
- − utils/remote-iserv/Makefile
- − utils/runghc/Makefile
- − utils/unlit/Makefile


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/50b2fab5c020419acfc7c9a7d4af81044a10e7ce...3d4f0dd9f6e6e8f0fd0fe64db86a5432a2517aad

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/50b2fab5c020419acfc7c9a7d4af81044a10e7ce...3d4f0dd9f6e6e8f0fd0fe64db86a5432a2517aad
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