[Git][ghc/ghc][wip/26264] compiler: Attempt to systematize Unique tags by introducing an ADT for each different tag
by Zubin (＠wz1000) 16 Sep '25
by Zubin (＠wz1000) 16 Sep '25
16 Sep '25
Zubin pushed to branch wip/26264 at Glasgow Haskell Compiler / GHC
Commits:
2de54235 by Zubin Duggal at 2025-09-16T16:25:28+05:30
compiler: Attempt to systematize Unique tags by introducing an ADT for each different tag
Fixes #26264
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32 changed files:
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Cmm/Info.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/UniqueRenamer.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/JS/JStg/Monad.hs
- compiler/GHC/Platform/Reg.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Stg/EnforceEpt.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/StgToCmm/ExtCode.hs
- compiler/GHC/StgToCmm/Monad.hs
- compiler/GHC/StgToJS/CodeGen.hs
- compiler/GHC/StgToJS/Ids.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Types/Unique/DSM.hs
- compiler/GHC/Types/Unique/Supply.hs
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[Git][ghc/ghc][wip/T23210] 209 commits: NCG/LA64: Support finer-grained DBAR hints
by sheaf (＠sheaf) 16 Sep '25
by sheaf (＠sheaf) 16 Sep '25
16 Sep '25
sheaf pushed to branch wip/T23210 at Glasgow Haskell Compiler / GHC
Commits:
bbaa44a7 by Peng Fan at 2025-07-16T16:50:42-04:00
NCG/LA64: Support finer-grained DBAR hints
For LA664 and newer uarchs, they have made finer granularity hints
available:
Bit4: ordering or completion (0: completion, 1: ordering)
Bit3: barrier for previous read (0: true, 1: false)
Bit2: barrier for previous write (0: true, 1: false)
Bit1: barrier for succeeding read (0: true, 1: false)
Bit0: barrier for succeeding write (0: true, 1: false)
And not affect the existing models because other hints are treated
as 'dbar 0' there.
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7da86e16 by Andreas Klebinger at 2025-07-16T16:51:25-04:00
Disable -fprof-late-overloaded-calls for join points.
Currently GHC considers cost centres as destructive to
join contexts. Or in other words this is not considered valid:
join f x = ...
in
... -> scc<tick> jmp
This makes the functionality of `-fprof-late-overloaded-calls` not feasible
for join points in general. We used to try to work around this by putting the
ticks on the rhs of the join point rather than around the jump. However beyond
the loss of accuracy this was broken for recursive join points as we ended up
with something like:
rec-join f x = scc<tick> ... jmp f x
Which similarly is not valid as the tick once again destroys the tail call.
One might think we could limit ourselves to non-recursive tail calls and do
something clever like:
join f x = scc<tick> ...
in ... jmp f x
And sometimes this works! But sometimes the full rhs would look something like:
join g x = ....
join f x = scc<tick> ... -> jmp g x
Which, would again no longer be valid. I believe in the long run we can make
cost centre ticks non-destructive to join points. Or we could keep track of
where we are/are not allowed to insert a cost centre. But in the short term I will
simply disable the annotation of join calls under this flag.
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7ee22fd5 by ARATA Mizuki at 2025-07-17T06:05:30-04:00
x86 NCG: Better lowering for shuffleFloatX4# and shuffleDoubleX2#
The new implementation
* make use of specialized instructions like (V)UNPCK{L,H}{PS,PD}, and
* do not require -mavx.
Close #26096
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
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c6cd2da1 by Jappie Klooster at 2025-07-17T06:06:20-04:00
Update interact docs to explain about buffering
We need to tell the user to set to the
appropriate buffer format.
Otherwise, this function may get randomly stuck,
or just behave confusingly.
issue: https://gitlab.haskell.org/ghc/ghc/-/issues/26131
NB, I'm running this with cabal *NOT* ghci. ghci messes with buffering anyway.
```haskell
interaction :: String -> String
interaction "jappie" = "hi"
interaction "jakob" = "hello"
interaction x = "unkown input: " <> x
main :: IO ()
main = interact interaction
```
so in my input (prefixed by `>`) I get:
```
> jappie
unkown input: jappie
```
we confirmed later this was due to lack of \n matching.
Anyway movnig on to more unexpected stuff:
```haskell
main :: IO ()
main = do
interact (concatMap interaction . lines)
```
get's stuck forever.
actually `^D` (ctrl+d) unstucks it and runs all input as expected.
for example you can get:
```
> sdfkds
> fakdsf
unkown input: sdfkdsunkown input: fakdsf
```
This program works!
```haskell
interaction :: String -> String
interaction "jappie" = "hi \n"
interaction "jakob" = "hello \n"
interaction x = "unkown input: " <> x <> "\n"
main :: IO ()
main = do
interact (concatMap interaction . lines)
```
the reason is that linebuffering is set for both in and output by default.
so lines eats the input lines, and all the \n postfixes make sure the buffer
is put out.
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9fa590a6 by Zubin Duggal at 2025-07-17T06:07:03-04:00
fetch_gitlab: Ensure we copy users_guide.pdf and Haddock.pdf to the release docs directory
Fixes #24093
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cc650b4b by Andrew Lelechenko at 2025-07-17T12:30:24-04:00
Add Data.List.NonEmpty.mapMaybe
As per https://github.com/haskell/core-libraries-committee/issues/337
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360fa82c by Duncan Coutts at 2025-07-17T12:31:14-04:00
base: Deprecate GHC.Weak.Finalize.runFinalizerBatch
https://github.com/haskell/core-libraries-committee/issues/342
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f4e8466c by Alan Zimmerman at 2025-07-17T12:31:55-04:00
EPA: Update exact printing based on GHC 9.14 tests
As a result of migrating the GHC ghc-9.14 branch tests to
ghc-exactprint in
https://github.com/alanz/ghc-exactprint/tree/ghc-9.14, a couple of
discrepancies were picked up
- The opening paren for a DefaultDecl was printed in the wrong place
- The import declaration level specifiers were not printed.
This commit adds those fixes, and some tests for them.
The tests brought to light that the ImportDecl ppr instance had not
been updated for level specifiers, so it updates that too.
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8b731e3c by Matthew Pickering at 2025-07-21T13:36:43-04:00
level imports: Fix infinite loop with cyclic module imports
I didn't anticipate that downsweep would run before we checked for
cyclic imports. Therefore we need to use the reachability function which
handles cyclic graphs.
Fixes #26087
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d751a9f1 by Pierre Thierry at 2025-07-21T13:37:28-04:00
Fix documentation about deriving from generics
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f8d9d016 by Andrew Lelechenko at 2025-07-22T21:13:28-04:00
Fix issues with toRational for types capable to represent infinite and not-a-number values
This commit fixes all of the following pitfalls:
> toRational (read "Infinity" :: Double)
179769313486231590772930519078902473361797697894230657273430081157732675805500963132708477322407536021120113879871393357658789768814416622492847430639474124377767893424865485276302219601246094119453082952085005768838150682342462881473913110540827237163350510684586298239947245938479716304835356329624224137216 % 1
> toRational (read "NaN" :: Double)
269653970229347386159395778618353710042696546841345985910145121736599013708251444699062715983611304031680170819807090036488184653221624933739271145959211186566651840137298227914453329401869141179179624428127508653257226023513694322210869665811240855745025766026879447359920868907719574457253034494436336205824 % 1
> realToFrac (read "NaN" :: Double) -- With -O0
Infinity
> realToFrac (read "NaN" :: Double) -- With -O1
NaN
> realToFrac (read "NaN" :: Double) :: CDouble
Infinity
> realToFrac (read "NaN" :: CDouble) :: Double
Infinity
Implements https://github.com/haskell/core-libraries-committee/issues/338
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5dabc718 by Zubin Duggal at 2025-07-22T21:14:10-04:00
haddock: Don't warn about missing link destinations for derived names.
Fixes #26114
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9c3a0937 by Matthew Pickering at 2025-07-22T21:14:52-04:00
template haskell: use a precise condition when implicitly lifting
Implicit lifting corrects a level error by replacing references to `x`
with `$(lift x)`, therefore you can use a level `n` binding at level `n
+ 1`, if it can be lifted.
Therefore, we now have a precise check that the use level is 1 more than
the bind level.
Before this bug was not observable as you only had 0 and 1 contexts but
it is easily evident when using explicit level imports.
Fixes #26088
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5144b22f by Andreas Klebinger at 2025-07-22T21:15:34-04:00
Add since tag and more docs for do-clever-arg-eta-expansion
Fixes #26113
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c865623b by Andreas Klebinger at 2025-07-22T21:15:34-04:00
Add since tag for -fexpose-overloaded-unfoldings
Fixes #26112
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49a44ab7 by Simon Hengel at 2025-07-23T17:59:55+07:00
Refactor GHC.Driver.Errors.printMessages
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84711c39 by Simon Hengel at 2025-07-23T18:27:34+07:00
Respect `-fdiagnostics-as-json` for error messages from pre-processors
(fixes #25480)
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d046b5ab by Simon Hengel at 2025-07-24T06:12:05-04:00
Include the rendered message in -fdiagnostics-as-json output
This implements #26173.
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d2b89603 by Ben Gamari at 2025-07-24T06:12:47-04:00
rts/Interpreter: Factor out ctoi tuple info tables into data
Instead of a massive case let's put this into data which we can reuse
elsewhere.
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4bc78496 by Sebastian Graf at 2025-07-24T16:19:34-04:00
CprAnal: Detect recursive newtypes (#25944)
While `cprTransformDataConWork` handles recursive data con workers, it
did not detect the case when a newtype is responsible for the recursion.
This is now detected in the `Cast` case of `cprAnal`.
The same reproducer made it clear that `isRecDataCon` lacked congruent
handling for `AppTy` and `CastTy`, now fixed.
Furthermore, the new repro case T25944 triggered this bug via an
infinite loop in `cprFix`, caused by the infelicity in `isRecDataCon`.
While it should be much less likely to trigger such an infinite loop now
that `isRecDataCon` has been fixed, I made sure to abort the loop after
10 iterations and emitting a warning instead.
Fixes #25944.
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0a583689 by Sylvain Henry at 2025-07-24T16:20:26-04:00
STM: don't create a transaction in the rhs of catchRetry# (#26028)
We don't need to create a transaction for the rhs of (catchRetry#)
because contrary to the lhs we don't need to abort it on retry. Moreover
it is particularly harmful if we have code such as (#26028):
let cN = readTVar vN >> retry
tree = c1 `orElse` (c2 `orElse` (c3 `orElse` ...))
atomically tree
Because it will stack transactions for the rhss and the read-sets of all
the transactions will be iteratively merged in O(n^2) after the
execution of the most nested retry.
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a49eca26 by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Renaming around predicate types
.. we were (as it turned out) abstracting over
type-class selectors in SPECIALISATION rules!
Wibble isEqPred
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f80375dd by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Refactor of Specialise.hs
This patch just tidies up `specHeader` a bit, removing one
of its many results, and adding some comments.
No change in behaviour.
Also add a few more `HasDebugCallStack` contexts.
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1bd12371 by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Improve treatment of SPECIALISE pragmas -- again!
This MR does another major refactor of the way that SPECIALISE
pragmas work, to fix #26115, #26116, #26117.
* We now /always/ solve forall-constraints in an all-or-nothing way.
See Note [Solving a Wanted forall-constraint] in GHC.Tc.Solver.Solve
This means we might have unsolved quantified constraints, which need
to be reported. See `inert_insts` in `getUnsolvedInerts`.
* I refactored the short-cut solver for type classes to work by
recursively calling the solver rather than by having a little baby
solver that kept being not clever enough.
See Note [Shortcut solving] in GHC.Tc.Solver.Dict
* I totally rewrote the desugaring of SPECIALISE pragmas, again.
The new story is in Note [Desugaring new-form SPECIALISE pragmas]
in GHC.HsToCore.Binds
Both old-form and new-form SPECIALISE pragmas now route through the same
function `dsSpec_help`. The tricky function `decomposeRuleLhs` is now used only
for user-written RULES, not for SPECIALISE pragmas.
* I improved `solveOneFromTheOther` to account for rewriter sets. Previously
it would solve a non-rewritten dict from a rewritten one. For equalities
we were already dealing with this, in
Some incidental refactoring
* A small refactor: `ebv_tcvs` in `EvBindsBar` now has a list of coercions, rather
than a set of tyvars. We just delay taking the free vars.
* GHC.Core.FVs.exprFVs now returns /all/ free vars.
Use `exprLocalFVs` for Local vars.
Reason: I wanted another variant for /evidence/ variables.
* Ues `EvId` in preference to `EvVar`. (Evidence variables are always Ids.)
Rename `isEvVar` to `isEvId`.
* I moved `inert_safehask` out of `InertCans` and into `InertSet` where it
more properly belongs.
Compiler-perf changes:
* There was a palpable bug (#26117) which this MR fixes in
newWantedEvVar, which bypassed all the subtle overlapping-Given
and shortcutting logic. (See the new `newWantedEvVar`.) Fixing this
but leads to extra dictionary bindings; they are optimised away quickly
but they made CoOpt_Read allocate 3.6% more.
* Hpapily T15164 improves.
* The net compiler-allocation change is 0.0%
Metric Decrease:
T15164
Metric Increase:
CoOpt_Read
T12425
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953fd8f1 by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Solve forall-constraints immediately, or not at all
This MR refactors the constraint solver to solve forall-constraints immediately,
rather than emitting an implication constraint to be solved later.
The most immediate motivation was that when solving quantified constraints
in SPECIALISE pragmas, we really really don't want to leave behind half-
solved implications. Also it's in tune with the approach of the new
short-cut solver, which recursively invokes the solver.
It /also/ saves quite a bit of plumbing; e.g
- The `wl_implics` field of `WorkList` is gone,
- The types of `solveSimpleWanteds` and friends are simplified.
- An EvFun contains binding, rather than an EvBindsVar ref-cell that
will in the future contain bindings. That makes `evVarsOfTerm`
simpler. Much nicer.
It also improves error messages a bit.
All described in Note [Solving a Wanted forall-constraint] in
GHC.Tc.Solver.Solve.
One tiresome point: in the tricky case of `inferConstraintsCoerceBased`
we make a forall-constraint. This we /do/ want to partially solve, so
we can infer a suitable context. (I'd be quite happy to force the user to
write a context, bt I don't want to change behavior.) So we want to generate
an /implication/ constraint in `emitPredSpecConstraints` rather than a
/forall-constraint/ as we were doing before. Discussed in (WFA3) of
the above Note.
Incidental refactoring
* `GHC.Tc.Deriv.Infer.inferConstraints` was consulting the state monad for
the DerivEnv that the caller had just consulted. Nicer to pass it as an
argument I think, so I have done that. No change in behaviour.
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6921ab42 by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Remove duplicated code in Ast.hs for evTermFreeVars
This is just a tidy up.
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1165f587 by Simon Peyton Jones at 2025-07-25T09:49:58+01:00
Small tc-tracing changes only
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0776ffe0 by Simon Hengel at 2025-07-26T04:54:20-04:00
Respect `-fdiagnostics-as-json` for core diagnostics (see #24113)
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cc1116e0 by Andrew Lelechenko at 2025-07-26T04:55:01-04:00
docs: add since pragma to Data.List.NonEmpty.mapMaybe
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ee2dc248 by Simon Hengel at 2025-07-31T06:25:35-04:00
Update comments on `OptKind` to reflect the code reality
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b029633a by Wen Kokke at 2025-07-31T06:26:21-04:00
rts: Disable --eventlog-flush-interval unless compiled with -threaded.
This commit fixes issue #26222:
Using --eventlog-flush-interval with the non-threaded RTS leads to eventlog corruption.
https://gitlab.haskell.org/ghc/ghc/-/issues/26222
This commit makes three changes when code is compiled against the non-threaded RTS:
1. It disables the --eventlog-flush-interval flag.
2. It disables the documentation for the --eventlog-flush-interval flag.
3. It disables the relevant state from RtsConfig and code from Timer.
4. It updates the entry for --eventlog-flush-interval in the users guide.
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31159f1d by Wen Kokke at 2025-07-31T06:26:21-04:00
rts: Split T20006 into tests with and without -threaded
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618687ef by Simon Hengel at 2025-07-31T06:27:03-04:00
docs/users_guide/win32-dlls.rst: Remove references to `readline`
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083e40f1 by Rodrigo Mesquita at 2025-08-01T04:38:23-04:00
debugger: Uniquely identify breakpoints by internal id
Since b85b11994e0130ff2401dd4bbdf52330e0bcf776 (support inlining
breakpoints), a breakpoint has been identified at runtime by *two* pairs
of <module,index>.
- The first, aka a 'BreakpointId', uniquely identifies a breakpoint in
the source of a module by using the Tick index. A Tick index can index
into ModBreaks.modBreaks_xxx to fetch source-level information about
where that tick originated.
- When a user specifies e.g. a line breakpoint using :break, we'll reverse
engineer what a Tick index for that line
- We update the `BreakArray` of that module (got from the
LoaderState) at that tick index to `breakOn`.
- A BCO we can stop at is headed by a BRK_FUN instruction. This
instruction stores in an operand the `tick index` it is associated
to. We look it up in the associated `BreakArray` (also an operand)
and check wheter it was set to `breakOn`.
- The second, aka the `ibi_info_mod` + `ibi_info_ix` of the
`InternalBreakpointId`, uniquely index into the `imodBreaks_breakInfo`
-- the information we gathered during code generation about the
existing breakpoint *ocurrences*.
- Note that with optimisation there may be many occurrences of the
same source-tick-breakpoint across different modules. The
`ibi_info_ix` is unique per occurrence, but the `bi_tick_ix` may be
shared. See Note [Breakpoint identifiers] about this.
- Note that besides the tick ids, info ids are also stored in
`BRK_FUN` so the break handler can refer to the associated
`CgBreakInfo`.
In light of that, the driving changes come from the desire to have the
info_id uniquely identify the breakpoint at runtime, and the source tick
id being derived from it:
- An InternalBreakpointId should uniquely identify a breakpoint just
from the code-generation identifiers of `ibi_info_ix` and `ibi_info_mod`.
So we drop `ibi_tick_mod` and `ibi_tick_ix`.
- A BRK_FUN instruction need only record the "internal breakpoint id",
not the tick-level id.
So we drop the tick mod and tick index operands.
- A BreakArray should be indexed by InternalBreakpointId rather than
BreakpointId
That means we need to do some more work when setting a breakpoint.
Specifically, we need to figure out the internal ids (occurrences of a
breakpoint) from the source-level BreakpointId we want to set the
breakpoint at (recall :break refers to breaks at the source level).
Besides this change being an improvement to the handling of breakpoints
(it's clearer to have a single unique identifier than two competing
ones), it unlocks the possibility of generating "internal" breakpoints
during Cg (needed for #26042).
It should also be easier to introduce multi-threaded-aware `BreakArrays`
following this change (needed for #26064).
Se also the new Note [ModBreaks vs InternalModBreaks]
On i386-linux:
-------------------------
Metric Decrease:
interpreter_steplocal
-------------------------
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bf03bbaa by Simon Hengel at 2025-08-01T04:39:05-04:00
Don't use MCDiagnostic for `ghcExit`
This changes the error message of `ghcExit` from
```
<no location info>: error:
Compilation had errors
```
to
```
Compilation had errors
```
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a889ec75 by Simon Hengel at 2025-08-01T04:39:05-04:00
Respect `-fdiagnostics-as-json` for driver diagnostics (see #24113)
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81577fe7 by Ben Gamari at 2025-08-02T04:29:39-04:00
configure: Allow override of CrossCompiling
As noted in #26236, the current inference logic is a bit simplistic. In
particular, there are many cases (e.g. building for a new libc) where
the target and host triples may differ yet we are still able to run the
produced artifacts as native code.
Closes #26236.
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01136779 by Andreas Klebinger at 2025-08-02T04:30:20-04:00
rts: Support COFF BigObj files in archives.
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1f9e4f54 by Stephen Morgan at 2025-08-03T15:14:08+10:00
refactor: Modify Data.List.sortOn to use (>) instead of compare. (#26184)
This lets a more efficient (>) operation be used if one exists.
This is technically a breaking change for malformed Ord instances, where
x > y is not equivalent to compare x y == GT.
Discussed by the CLC in issue #332: https://github.com/haskell/core-libraries-committee/issues/332
- - - - -
4f6bc9cf by fendor at 2025-08-04T17:50:06-04:00
Revert "base: Expose Backtraces constructor and fields"
This reverts commit 17db44c5b32fff82ea988fa4f1a233d1a27bdf57.
- - - - -
bcdec657 by Zubin Duggal at 2025-08-05T10:37:29+05:30
compiler: Export a version of `newNameCache` that is not prone to footguns.
`newNameCache` must be initialized with both a non-"reserved" unique tag, as well
as a list of known key names. Failing to do so results in hard to debug unique conflicts.
It is difficult for API users to tell which unique tags are safe to use. So instead of leaving
this up to the user to decide, we now export a version of `newNameCache` which uses a guaranteed
non-reserved unique tag. In fact, this is now the way the unique tag is initialized for all invocations
of the compiler.
The original version of `newNameCache` is now exported as `newNameCache'` for advanced users.
We also deprecate `initNameCache` as it is also prone to footguns and is completely subsumed in
functionality by `newNameCache` and `newNameCache'`.
Fixes #26135 and #26055
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57d3b4a8 by Andrew Lelechenko at 2025-08-05T18:36:31-04:00
hadrian: bump Stackage snapshot to LTS 24.2 / GHC 9.10.2
In line with #25693 we should use GHC 9.10 as a boot compiler,
while Hadrian stack.yaml was stuck on GHC 9.6.
- - - - -
c2a78cea by Peng Fan at 2025-08-05T18:37:27-04:00
NCG/LA64: implement atomic write with finer-grained DBAR hints
Signed-off-by: Peng Fan <fanpeng(a)loongson.cn>
- - - - -
95231c8e by Teo Camarasu at 2025-08-06T08:35:58-04:00
CODEOWNERS: add CLC as codeowner of base
We also remove hvr, since I think he is no longer active
- - - - -
77df0ded by Andrew Lelechenko at 2025-08-06T08:36:39-04:00
Bump submodule text to 2.1.3
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8af260d0 by Nikolaos Chatzikonstantinou at 2025-08-06T08:37:23-04:00
docs: fix internal import in getopt examples
This external-facing doc example shouldn't mention GHC internals when
using 'fromMaybe'.
- - - - -
69cc16ca by Marc Scholten at 2025-08-06T15:51:28-04:00
README: Add note on ghc.nix
- - - - -
93a2f450 by Daniel Díaz at 2025-08-06T15:52:14-04:00
Link to the "Strict Bindings" docs from the linear types docs
Strict Bidings are relevant for the kinds of multiplicity annotations
linear lets support.
- - - - -
246b7853 by Matthew Pickering at 2025-08-07T06:58:30-04:00
level imports: Check the level of exported identifiers
The level imports specification states that exported identifiers have to
be at level 0. This patch adds the requird level checks that all
explicitly mentioned identifiers occur at level 0.
For implicit export specifications (T(..) and module B), only level 0
identifiers are selected for re-export.
ghc-proposal: https://github.com/ghc-proposals/ghc-proposals/pull/705
Fixes #26090
- - - - -
358bc4fc by fendor at 2025-08-07T06:59:12-04:00
Bump GHC on darwin CI to 9.10.1
- - - - -
1903ae35 by Matthew Pickering at 2025-08-07T12:21:10+01:00
ipe: Place strings and metadata into specific .ipe section
By placing the .ipe metadata into a specific section it can be stripped
from the final binary if desired.
```
objcopy --remove-section .ipe <binary>
upx <binary>
```
Towards #21766
- - - - -
c80dd91c by Matthew Pickering at 2025-08-07T12:22:42+01:00
ipe: Place magic word at the start of entries in the .ipe section
The magic word "IPE\nIPE\n" is placed at the start of .ipe sections,
then if the section is stripped, we can check whether the section starts
with the magic word or not to determine whether there is metadata
present or not.
Towards #21766
- - - - -
cab42666 by Matthew Pickering at 2025-08-07T12:22:42+01:00
ipe: Use stable IDs for IPE entries
IPEs have historically been indexed and reported by their address.
This makes it impossible to compare profiles between runs, since the
addresses may change (due to ASLR) and also makes it tricky to separate
out the IPE map from the binary.
This small patch adds a stable identifier for each IPE entry.
The stable identifier is a single 64 bit word. The high-bits are a
per-module identifier and the low bits identify which entry in each
module.
1. When a node is added into the IPE buffer it is assigned a unique
identifier from an incrementing global counter.
2. Each entry already has an index by it's position in the
`IpeBufferListNode`.
The two are combined together by the `IPE_ENTRY_KEY` macro.
Info table profiling uses the stable identifier rather than the address
of the info table.
The benefits of this change are:
* Profiles from different runs can be easily compared
* The metadata can be extracted from the binary (via the eventlog for
example) and then stripped from the executable.
Fixes #21766
- - - - -
2860a9a5 by Simon Peyton Jones at 2025-08-07T20:29:18-04:00
In TcSShortCut, typechecker plugins should get empty Givens
Solving in TcShortCut mode means /ignoring the Givens/. So we
should not pass them to typechecker plugins!
Fixes #26258.
This is a fixup to the earlier MR:
commit 1bd12371feacc52394a0e660ef9349f9e8ee1c06
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Mon Jul 21 10:04:49 2025 +0100
Improve treatment of SPECIALISE pragmas -- again!
- - - - -
2157db2d by sterni at 2025-08-08T15:32:39-04:00
hadrian: enable terminfo if --with-curses-* flags are given
The GHC make build system used to support WITH_TERMINFO in ghc.mk which
allowed controlling whether to build GHC with terminfo or not. hadrian
has replaced this with a system where this is effectively controlled by
the cross-compiling setting (the default WITH_TERMINFO value was bassed
on CrossCompiling, iirc).
This behavior is undesireable in some cases and there is not really a
good way to work around it. Especially for downstream packagers,
modifying this via UserSettings is not really feasible since such a
source file has to be kept in sync with Settings/Default.hs manually
since it can't import Settings.Default or any predefined Flavour
definitions.
To avoid having to add a new setting to cfg/system.config and/or a new
configure flag (though I'm happy to implement both if required), I've
chosen to take --with-curses-* being set explicitly as an indication
that the user wants to have terminfo enabled. This would work for
Nixpkgs which sets these flags [1] as well as haskell.nix [2] (which
goes to some extreme measures [3] [4] to force terminfo in all scenarios).
In general, I'm an advocate for making the GHC build be the same for
native and cross insofar it is possible since it makes packaging GHC and
Haskell related things while still supporting cross much less
compilicated. A more minimal GHC with reduced dependencies should
probably be a specific flavor, not the default.
Partially addresses #26288 by forcing terminfo to be built if the user
explicitly passes configure flags related to it. However, it isn't built
by default when cross-compiling yet nor is there an explicit way to
control the package being built.
[1]: https://github.com/NixOS/nixpkgs/blob/3a7266fcefcb9ce353df49ba3f292d0644376…
[2]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa…
[3]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa…
[4]: https://github.com/input-output-hk/haskell.nix/blob/6eaafcdf04bab7be745d1aa…
- - - - -
b3c31488 by David Feuer at 2025-08-08T15:33:21-04:00
Add default QuasiQuoters
Add `defaultQuasiQuoter` and `namedDefaultQuasiQuoter` to make it easier
to write `QuasiQuoters` that give helpful error messages when they're
used in inappropriate contexts.
Closes #24434.
- - - - -
03555ed8 by Sylvain Henry at 2025-08-10T22:20:57-04:00
Handle non-fractional CmmFloats in Cmm's CBE (#26229)
Since f8d9d016305be355f518c141f6c6d4826f2de9a2, toRational for Float and
Double converts float's infinity and NaN into Rational's infinity and
NaN (respectively 1%0 and 0%0).
Cmm CommonBlockEliminator hashing function needs to take these values
into account as they can appear as literals now. See added testcase.
- - - - -
6c956af3 by J. Ryan Stinnett at 2025-08-10T22:21:42-04:00
Fix extensions list in `DoAndIfThenElse` docs
- - - - -
6dc420b1 by J. Ryan Stinnett at 2025-08-10T22:21:42-04:00
Document status of `RelaxedPolyRec` extension
This adds a brief extension page explaining the status of the
`RelaxedPolyRec` extension. The behaviour of this mode is already
explained elsewhere, so this page is mainly for completeness so that
various lists of extensions have somewhere to point to for this flag.
Fixes #18630
- - - - -
18036d52 by Simon Peyton Jones at 2025-08-11T11:31:20-04:00
Take more care in zonkEqTypes on AppTy/AppTy
This patch fixes #26256.
See Note [zonkEqTypes and the PKTI] in GHC.Tc.Solver.Equality
- - - - -
c8d76a29 by Zubin Duggal at 2025-08-11T11:32:02-04:00
ci: upgrade bootstrap compiler on windows to 9.10.1
- - - - -
34fc50c1 by Ben Gamari at 2025-08-11T13:36:25-04:00
Kill IOPort#
This type is unnecessary, having been superceded by `MVar` and a rework
of WinIO's blocking logic.
See #20947.
See https://github.com/haskell/core-libraries-committee/issues/213.
- - - - -
56b32c5a by sheaf at 2025-08-12T10:00:19-04:00
Improve deep subsumption
This commit improves the DeepSubsumption sub-typing implementation
in GHC.Tc.Utils.Unify.tc_sub_type_deep by being less eager to fall back
to unification.
For example, we now are properly able to prove the subtyping relationship
((∀ a. a->a) -> Int) -> Bool <= β[tau] Bool
for an unfilled metavariable β. In this case (with an AppTy on the right),
we used to fall back to unification. No longer: now, given that the LHS
is a FunTy and that the RHS is a deep rho type (does not need any instantiation),
we try to make the RHS into a FunTy, viz.
β := (->) γ
We can then continue using covariance & contravariance of the function
arrow, which allows us to prove the subtyping relationship, instead of
trying to unify which would cause us to error out with:
Couldn't match expected type ‘β’ with actual type ‘(->) ((∀ a. a -> a) -> Int)
See Note [FunTy vs non-FunTy case in tc_sub_type_deep] in GHC.Tc.Utils.Unify.
The other main improvement in this patch concerns type inference.
The main subsumption logic happens (before & after this patch) in
GHC.Tc.Gen.App.checkResultTy. However, before this patch, all of the
DeepSubsumption logic only kicked in in 'check' mode, not in 'infer' mode.
This patch adds deep instantiation in the 'infer' mode of checkResultTy
when we are doing deep subsumption, which allows us to accept programs
such as:
f :: Int -> (forall a. a->a)
g :: Int -> Bool -> Bool
test1 b =
case b of
True -> f
False -> g
test2 b =
case b of
True -> g
False -> f
See Note [Deeply instantiate in checkResultTy when inferring].
Finally, we add representation-polymorphism checks to ensure that the
lambda abstractions we introduce when doing subsumption obey the
representation polymorphism invariants of Note [Representation polymorphism invariants]
in GHC.Core. See Note [FunTy vs FunTy case in tc_sub_type_deep].
This is accompanied by a courtesy change to `(<.>) :: HsWrapper -> HsWrapper -> HsWrapper`,
adding the equation:
WpCast c1 <.> WpCast c2 = WpCast (c1 `mkTransCo` c2)
This is useful because mkWpFun does not introduce an eta-expansion when
both of the argument & result wrappers are casts; so this change allows
us to avoid introducing lambda abstractions when casts suffice.
Fixes #26225
- - - - -
d175aff8 by Sylvain Henry at 2025-08-12T10:01:31-04:00
Add regression test for #18619
- - - - -
a3983a26 by Sylvain Henry at 2025-08-12T10:02:20-04:00
RTS: remove some TSAN annotations (#20464)
Use RELAXED_LOAD_ALWAYS macro instead.
- - - - -
0434af81 by Ben Gamari at 2025-08-12T10:03:02-04:00
Bump time submodule to 1.15
Also required bumps of Cabal, directory, and hpc.
- - - - -
62899117 by Florian Ragwitz at 2025-08-13T21:01:34-04:00
Extend record-selector usage ticking to all binds using a record field
This extends the previous handling of ticking for RecordWildCards and
NamedFieldPuns to all var bindings that involve record selectors.
Note that certain patterns such as `Foo{foo = 42}` will currently not tick the
`foo` selector, as ticking is triggered by `HsVar`s.
Closes #26191.
- - - - -
b37b3af7 by Florian Ragwitz at 2025-08-13T21:01:34-04:00
Add release notes for 9.16.1 and move description of latest HPC changes there.
- - - - -
a5e4b7d9 by Ben Gamari at 2025-08-13T21:02:18-04:00
rts: Clarify rationale for undefined atomic wrappers
Since c06e3f46d24ef69f3a3d794f5f604cb8c2a40cbc the RTS has declared
various atomic operation wrappers defined by ghc-internal as undefined.
While the rationale for this isn't clear from the commit message, I
believe that this is necessary due to the unregisterised backend.
Specifically, the code generator will reference these symbols when
compiling RTS Cmm sources.
- - - - -
50842f83 by Andreas Klebinger at 2025-08-13T21:03:01-04:00
Make unexpected LLVM versions a warning rather than an error.
Typically a newer LLVM version *will* work so erroring out if
a user uses a newer LLVM version is too aggressive.
Fixes #25915
- - - - -
c91e2650 by fendor at 2025-08-13T21:03:43-04:00
Store `StackTrace` and `StackSnapshot` in `Backtraces`
Instead of decoding the stack traces when collecting the `Backtraces`,
defer this decoding until actually showing the `Backtraces`.
This allows users to customise how `Backtraces` are displayed by
using a custom implementation of `displayExceptionWithInfo`, overwriting
the default implementation for `Backtraces` (`displayBacktraces`).
- - - - -
dee28cdd by fendor at 2025-08-13T21:03:43-04:00
Allow users to customise the collection of exception annotations
Add a global `CollectExceptionAnnotationMechanism` which determines how
`ExceptionAnnotation`s are collected upon throwing an `Exception`.
This API is exposed via `ghc-experimental`.
By overriding how we collect `Backtraces`, we can control how the
`Backtraces` are displayed to the user by newtyping `Backtraces` and
giving a different instance for `ExceptionAnnotation`.
A concrete use-case for this feature is allowing us to experiment with
alternative stack decoders, without having to modify `base`, which take
additional information from the stack frames.
This commit does not modify how `Backtraces` are currently
collected or displayed.
- - - - -
66024722 by fendor at 2025-08-13T21:03:43-04:00
Expose Backtraces internals from ghc-experimental
Additionally, expose the same API `base:Control.Exception.Backtrace`
to make it easier to use as a drop-in replacement.
- - - - -
a766286f by Reed Mullanix at 2025-08-13T21:04:36-04:00
ghc-internal: Fix naturalAndNot for NB/NS case
When the first argument to `naturalAndNot` is larger than a `Word` and the second is `Word`-sized, `naturalAndNot` will truncate the
result:
```
>>> naturalAndNot ((2 ^ 65) .|. (2 ^ 3)) (2 ^ 3)
0
```
In contrast, `naturalAndNot` does not truncate when both arguments are larger than a `Word`, so this appears to be a bug.
Luckily, the fix is pretty easy: we just need to call `bigNatAndNotWord#` instead of truncating.
Fixes #26230
- - - - -
3506fa7d by Simon Hengel at 2025-08-13T21:05:18-04:00
Report -pgms as a deprecated flag
(instead of reporting an unspecific warning)
Before:
on the commandline: warning:
Object splitting was removed in GHC 8.8
After:
on the commandline: warning: [GHC-53692] [-Wdeprecated-flags]
-pgms is deprecated: Object splitting was removed in GHC 8.8
- - - - -
51c701fe by Zubin Duggal at 2025-08-13T21:06:00-04:00
testsuite: Be more permissive when filtering out GNU_PROPERTY_TYPE linker warnings
The warning text is slightly different with ld.bfd.
Fixes #26249
- - - - -
dfe6f464 by Simon Hengel at 2025-08-13T21:06:43-04:00
Refactoring: Don't misuse `MCDiagnostic` for lint messages
`MCDiagnostic` is meant to be used for compiler diagnostics.
Any code that creates `MCDiagnostic` directly, without going through
`GHC.Driver.Errors.printMessage`, side steps `-fdiagnostics-as-json`
(see e.g. !14475, !14492 !14548).
To avoid this in the future I want to control more narrowly who creates
`MCDiagnostic` (see #24113).
Some parts of the compiler use `MCDiagnostic` purely for formatting
purposes, without creating any real compiler diagnostics. This change
introduces a helper function, `formatDiagnostic`, that can be used in
such cases instead of constructing `MCDiagnostic`.
- - - - -
a8b2fbae by Teo Camarasu at 2025-08-13T21:07:24-04:00
rts: ensure MessageBlackHole.link is always a valid closure
We turn a MessageBlackHole into an StgInd in wakeBlockingQueue().
Therefore it's important that the link field, which becomes the
indirection field, always points to a valid closure.
It's unclear whether it's currently possible for the previous behaviour
to lead to a crash, but it's good to be consistent about this invariant nonetheless.
Co-authored-by: Andreas Klebinger <klebinger.andreas(a)gmx.at>
- - - - -
4021181e by Teo Camarasu at 2025-08-13T21:07:24-04:00
rts: spin if we see a WHITEHOLE in messageBlackHole
When a BLACKHOLE gets cancelled in raiseAsync, we indirect to a THUNK.
GC can then shortcut this, replacing our BLACKHOLE with a fresh THUNK.
This THUNK is not guaranteed to have a valid indirectee field.
If at the same time, a message intended for the previous BLACKHOLE is
processed and concurrently we BLACKHOLE the THUNK, thus temporarily
turning it into a WHITEHOLE, we can get a segfault, since we look at the
undefined indirectee field of the THUNK
The fix is simple: spin if we see a WHITEHOLE, and it will soon be
replaced with a valid BLACKHOLE.
Resolves #26205
- - - - -
1107af89 by Oleg Grenrus at 2025-08-13T21:08:06-04:00
Allow defining HasField instances for naughty fields
Resolves #26295
... as HasField solver doesn't solve for fields with "naughty"
selectors, we could as well allow defining HasField instances for these
fields.
- - - - -
020e7587 by Sylvain Henry at 2025-08-13T21:09:00-04:00
Fix Data.List unqualified import warning
- - - - -
fd811ded by Simon Peyton Jones at 2025-08-14T17:56:47-04:00
Make injecting implicit bindings into its own pass
Previously we were injecting "impliicit bindings" (data constructor
worker and wrappers etc)
- both at the end of CoreTidy,
- and at the start of CorePrep
This is unpleasant and confusing. This patch puts it it its own pass,
addImplicitBinds, which runs between the two.
The function `GHC.CoreToStg.AddImplicitBinds.addImplicitBinds` now takes /all/
TyCons, not just the ones for algebraic data types. That change ripples
through to
- corePrepPgm
- doCodeGen
- byteCodeGen
All take [TyCon] which includes all TyCons
- - - - -
9bd7fcc5 by Simon Peyton Jones at 2025-08-14T17:56:47-04:00
Implement unary classes
The big change is described exhaustively in
Note [Unary class magic] in GHC.Core.TyCon
Other changes
* We never unbox class dictionaries in worker/wrapper. This has been true for some
time now, but the logic is now centralised in functions in
GHC.Core.Opt.WorkWrap.Utils, namely `canUnboxTyCon`, and `canUnboxArg`
See Note [Do not unbox class dictionaries] in GHC.Core.Opt.WorkWrap.Utils.
* Refactored the `notWorthFloating` logic in GHc.Core.Opt.SetLevels.
I can't remember if I actually changed any behaviour here, but if so it's
only in a corner cases.
* Fixed a bug in `GHC.Core.TyCon.isEnumerationTyCon`, which was wrongly returning
True for (##).
* Remove redundant Role argument to `liftCoSubstWithEx`. It was always
Representational.
* I refactored evidence generation in the constraint solver:
* Made GHC.Tc.Types.Evidence contain better abstactions for evidence
generation.
* I deleted the file `GHC.Tc.Types.EvTerm` and merged its (small) contents
elsewhere. It wasn't paying its way.
* Made evidence for implicit parameters go via a proper abstraction.
* Fix inlineBoringOk; see (IB6) in Note [inlineBoringOk]
This fixes a slowdown in `countdownEffectfulDynLocal`
in the `effectful` library.
Smaller things
* Rename `isDataTyCon` to `isBoxedDataTyCon`.
* GHC.Core.Corecion.liftCoSubstWithEx was only called with Representational role,
so I baked that into the function and removed the argument.
* Get rid of `GHC.Core.TyCon.tyConSingleAlgDataCon_maybe` in favour of calling
`not isNewTyCon` at the call sites; more explicit.
* Refatored `GHC.Core.TyCon.isInjectiveTyCon`; but I don't think I changed its
behaviour
* Moved `decomposeIPPred` to GHC.Core.Predicate
Compile time performance changes:
geo. mean +0.1%
minimum -6.8%
maximum +14.4%
The +14% one is in T21839c, where it seems that a bit more inlining
is taking place. That seems acceptable; and the average change is small
Metric Decrease:
LargeRecord
T12227
T12707
T16577
T21839r
T5642
Metric Increase:
T15164
T21839c
T3294
T5321FD
T5321Fun
WWRec
- - - - -
b4075d71 by Simon Peyton Jones at 2025-08-14T17:56:47-04:00
Slight improvement to pre/postInlineUnconditionally
Avoids an extra simplifier iteration
- - - - -
9e443596 by Simon Peyton Jones at 2025-08-14T17:56:47-04:00
Fix a long-standing assertion error in normSplitTyConApp_maybe
- - - - -
91310ad0 by Simon Peyton Jones at 2025-08-14T17:56:47-04:00
Add comment to coercion optimiser
- - - - -
5b841d82 by Teo Camarasu at 2025-08-14T17:57:56-04:00
template-haskell: move some identifiers from ghc-internal to template-haskell
These identifiers are not used internally by the compiler. Therefore we
have no reason for them to be in ghc-internal.
By moving them to template-haskell, we benefit from it being easier to
change them and we avoid having to build them in stage0.
Resolves #26048
- - - - -
33e2c7e5 by Teo Camarasu at 2025-08-14T17:57:56-04:00
template-haskell: transfer $infix note to public module
This Haddock note should be in the public facing module
- - - - -
2a411fc4 by Sylvain Henry at 2025-08-14T17:59:09-04:00
JS: export HEAP8 symbol (#26290)
Newer Emscripten requires this.
- - - - -
248f78ca by Ben Gamari at 2025-08-14T17:59:51-04:00
users-guide: Drop the THREAD_RUNNABLE event
As of f361281c89fbce42865d8b8b27b0957205366186 it is no longer emitted.
- - - - -
706d33e3 by Recursion Ninja at 2025-08-15T04:12:12-04:00
Resolving issues #20645 and #26109
Correctly sign extending and casting smaller bit width types for LLVM operations:
- bitReverse8#
- bitReverse16#
- bitReverse32#
- byteSwap16#
- byteSwap32#
- pdep8#
- pdep16#
- pext8#
- pext16#
- - - - -
1cdc6f46 by Cheng Shao at 2025-08-15T04:12:56-04:00
hadrian: enforce have_llvm=False for wasm32/js
This patch fixes hadrian to always pass have_llvm=False to the
testsuite driver for wasm32/js targets. These targets don't really
support the LLVM backend, and the optllvm test way doesn't work. We
used to special-case wasm32/js to avoid auto-adding optllvm way in
testsuite/config/ghc, but this is still problematic if someone writes
a new LLVM-related test and uses something like when(have_llvm(),
extra_ways(["optllvm"])). So better just enforce have_llvm=False for
these targets here.
- - - - -
ca03226d by Ben Gamari at 2025-08-18T13:43:20+00:00
configure: Allow use of LLVM 20
- - - - -
783cd7d6 by Cheng Shao at 2025-08-18T20:13:14-04:00
compiler: use `UniqMap` instead of `Map` for `BCEnv` in bytecode compiler
The bytecode compiler maintains a `BCEnv` which was previously `Map Id
StackDepth`. Given `Id` is `Uniquable`, we might as well use `UniqMap`
here as a more efficient data structure, hence this patch.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
58e46da9 by fendor at 2025-08-18T20:13:56-04:00
rts: Strip lower three bits when hashing Word instead of lower eight bits
- - - - -
45dbfa23 by Cheng Shao at 2025-08-18T20:14:37-04:00
libffi: update to 3.5.2
Bumps libffi submodule.
- - - - -
54be78ef by Ben Gamari at 2025-08-19T16:28:05-04:00
testsuite: Fix T20006b
This test is supposed to fail for non-threaded ways yet it
was previously marked as only failing in `normal`.
Fix this.
- - - - -
f4bac607 by Simon Peyton Jones at 2025-08-19T16:28:47-04:00
Take yet more care with reporting redundant constraints
This small patch fixes #25992, which relates to reporting redundant
constraints on default-method declarations.
See (TRC5) in Note [Tracking redundant constraints]
- - - - -
ab130fec by fendor at 2025-08-19T16:29:29-04:00
Bump dependencies of hadrian-bootstrap-gen to use GHC 9.6.7
- - - - -
6d02ac6f by fendor at 2025-08-19T16:29:29-04:00
Bump required GHC version for test-bootstrap jobs to 9.10.1
Include test-bootstrap job for GHC 9.12.2.
Update hadrian bootstrap plans use GHC 9.10 and 9.12
Remove older GHC bootstrap configurations.
We require at least GHC 9.10.1 to build GHC.
Adds plans for:
* 9.10.1
* 9.10.2
* 9.12.1
* 9.12.2
- - - - -
9e857171 by Brandon Chinn at 2025-08-20T11:47:46-04:00
Don't warn unused-imports with used generated imports
Fixes #21730
* The old notion of "implicit" import has been renamed to "generated". See Note [Generated imports] in GHC.Hs.ImpExp.
* ImportMap now keeps track of generated and user-written imports separately. This avoids the fake SrcSpan we used to give the implicit Prelude import, and the hack that went with it.
* -ddump-minimal-imports now considers generated imports (but still only
warns on + prints user-written imports)
* bestImport considers generated imports to take priority over user-written imports.
- - - - -
9fb3bad4 by Ben Gamari at 2025-08-20T11:48:31-04:00
mailmap: Use ben(a)well-typed.com more liberally
Nearly all of this work was done while working for Well-Typed.
- - - - -
774fec37 by Ben Gamari at 2025-08-20T11:49:15-04:00
Add primop to annotate the call stack with arbitrary data
We introduce a new primop `annotateStack#` which allows us to push
arbitrary data onto the call-stack.
This allows us to extract the data later when decoding the stack, for
example when an exception is thrown, showing more information to the
user without having to annotate the full call-stack with `HasCallStack`
constraints.
A new stack frame value is introduced `AnnFrame`, which consists of
nothing but a generic payload.
The primop has a small wrapper API that allows users to annotate their
call-stack in programs.
There is a pure API and an IO-based one. The former is a little bit
dubious, as it affects the evaluation of a program, so use with care.
The latter is "safe", as it doesn't change the evaluation of the
program.
The stack annotation mechanism is similarly implemented to the
`ExceptionAnnotation` and `Exception`, there is a typeclass to indicate
something can be pushed onto the call-stack and all values are wrapped
in the existential `SomeStackAnnotation`, which recover the type of the
annotation payload.
There is currently no builtin way to show the stack annotations when
`Backtraces` are displayed (i.e., when showing stack traces to the user),
which we will address in a follow-up MR.
-------------------------
Metric Increase:
ghc_experimental_so
-------------------------
We increase the size of the package, so this is not unreasonable.
Co-Authored-By: fendor <fendor(a)posteo.de>
Co-Authored-By: Ben Gamari <bgamari.foss(a)gmail.com>
- - - - -
fdfa3892 by Ben Gamari at 2025-08-20T11:49:57-04:00
testsuite: Add regression test for #24606
- - - - -
39b2e382 by Cheng Shao at 2025-08-20T11:50:40-04:00
compiler: only use `Name` instead of `Id` in `SptEntry`
As a part of #26298, this patch refactors `SptEntry` to only carry a
`Name` instead of `Id`: we do not care about extra information like
caffyness or type at all in any static pointer related codegen logic.
This is necessary to make `SptEntry` serializable, as a part of the
grand plan of serializable bytecode.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
276f8ea8 by Vekhir -- at 2025-08-20T11:51:35-04:00
Bump Cabal dependency
- - - - -
0b9c7437 by Zubin Duggal at 2025-08-20T11:52:18-04:00
ci: Teach ci.sh to fetch FreeBSD artifacts from ghcup unofficial bindists and bootstrap compiler on FreeBSD to 9.10.1
Also refactor fetch_ghc logic in ci.sh, renaming the GHC_VERSION enviorment configuration variable to FETCH_GHC_VERSION,
making it clear that it is intended for use on platforms like Windows and FreeBSD where we don't want to use the GHC
excecutable from the platform environment and instead need to download and install GHC-$FETCH_GHC_VERSION from a release
bindist.
Fixes #26296
- - - - -
b2914797 by Cheng Shao at 2025-08-20T11:53:00-04:00
driver: use UniqSet for hiddenModules in DynFlags/FinderOpts
This patch replaces Set ModuleName with UniqSet ModuleName in
DynFlags.hiddenModules and FinderOpts.finder_hiddenModules for
improved efficiency.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
0335d899 by Cheng Shao at 2025-08-20T11:53:00-04:00
driver: use UniqMap ModuleName in the finder
This patch replaces Map ModuleName with UniqMap ModuleName in the
finder for improved efficiency.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
91f4faaa by Cheng Shao at 2025-08-20T11:53:43-04:00
configure: check python3 version and require minimal 3.7
Since !9515, the testsuite driver requires python3 version to be at
least 3.7, though this has never been checked by configure logic. This
patch implements the version check. Fixes #23234.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
df4ee9b4 by Cheng Shao at 2025-08-20T11:54:25-04:00
compiler: use zero cost coerce in GHC.CmmToAsm.CFG.loopInfo
This patch refactors GHC.CmmToAsm.CFG.loopInfo to use zero cost coerce
and thus addresses the TODO. For coerce to work, constructors of
Label/LabelMap/LabelSet from GHC.Cmm.Dataflow.Label are exposed,
though I believe it's a worthy tradeoff to avoid unnecessary runtime
cost without using unsafeCoerce, since the latter could be a landmine
for future refactoring.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
ccda188d by Simon Peyton Jones at 2025-08-20T11:55:07-04:00
Start with empty inerts in shortcut solving
When short-cut solving we were starting with an inert set that had
unsolved Wanteds. This caused an infinite loop (#26314), because a
typechecker plugin kept being given that unsolved Wanted.
It's better just to start with an empty inert set
- - - - -
c8882ed7 by Ben Gamari at 2025-08-20T11:55:49-04:00
configure: Bump minimal bootstrap GHC version to 9.8
- - - - -
f0a19d74 by fendor at 2025-08-20T19:55:00-04:00
Remove deprecated functions from the ghci package
- - - - -
ebeb991b by fendor at 2025-08-20T19:55:00-04:00
base: Remove unstable heap representation details from GHC.Exts
- - - - -
e368e247 by Rodrigo Mesquita at 2025-08-20T19:55:42-04:00
bytecode: Use 32bits for breakpoint index
Fixes #26325
- - - - -
42724462 by Simon Hengel at 2025-08-21T17:52:11-04:00
Serialize wired-in names as external names when creating HIE files
Note that the domain of de-serialized names stays the same.
Specifically, for known-key names, before `lookupKnownKeyName` was used,
while now this is handled by `lookupOrigNameCache` which captures the
same range provided that the OrigNameCache has been initialized with
`knownKeyNames` (which is the case by default).
(fixes #26238)
- - - - -
6a43f8ec by Cheng Shao at 2025-08-21T17:52:52-04:00
compiler: fix closure C type in SPT init code
This patch fixes the closure C type in SPT init code to StgClosure,
instead of the previously incorrect StgPtr. Having an incorrect C type
makes SPT init code not compatible with other foreign stub generation
logic, which may also emit their own extern declarations for the same
closure symbols and thus will clash with the incorrect prototypes in
SPT init code.
- - - - -
5b5d9d47 by Ben Gamari at 2025-08-25T14:29:35-04:00
Revert "STM: don't create a transaction in the rhs of catchRetry# (#26028)"
This reverts commit 0a5836891ca29836a24c306d2a364c2e4b5377fd
- - - - -
10f06163 by Cheng Shao at 2025-08-25T14:30:16-04:00
wasm: ensure setKeepCAFs() is called in ghci
This patch is a critical bugfix for #26106, see comment and linked
issue for details.
- - - - -
bedc1004 by Cheng Shao at 2025-08-26T09:31:18-04:00
compiler: use zero cost coerce in hoopl setElems/mapToList
This patch is a follow-up of !14680 and changes setElems/mapToList in
GHC/Cmm/Dataflow/Label to use coerce instead of mapping mkHooplLabel
over the keys.
- - - - -
13250d97 by Ryan Scott at 2025-08-26T09:31:59-04:00
Reject infix promoted data constructors without DataKinds
In the rename, make sure to apply the same `DataKinds` checks for both
`HsTyVar` (for prefix promoted data constructors) and `HsOpTy` (for infix
promoted data constructors) alike.
Fixes #26318.
- - - - -
37655c46 by Teo Camarasu at 2025-08-26T15:24:51-04:00
tests: disable T22859 under LLVM
This test was failing under the LLVM backend since the allocations
differ from the NCG.
Resolves #26282
- - - - -
2cbba9d6 by Teo Camarasu at 2025-08-26T15:25:33-04:00
base-exports: update version numbers
As the version of the compiler has been bumped, a lot of the embedded
version numbers will need to be updated if we ever run this test with
`--test-accept` so let's just update them now, and keep future diffs
clean.
- - - - -
f9f2ffcf by Alexandre Esteves at 2025-08-27T07:19:14-04:00
Import new name for 'utimbuf' on windows to fix #26337
Fixes an `-Wincompatible-pointer-types` instance that turns into an error on
recent toolchains and surfaced as such on nixpkgs when doing linux->ucrt cross.
This long-standing warning has been present at least since 9.4:
```
C:\GitLabRunner\builds\0\1709189\tmp\ghc16652_0\ghc_4.c:26:115: error:
warning: incompatible pointer types passing 'struct utimbuf *' to parameter of type 'struct _utimbuf *' [-Wincompatible-pointer-types]
|
26 | HsInt32 ghczuwrapperZC9ZCbaseZCSystemziPosixziInternalsZCzuutime(char* a1, struct utimbuf* a2) {return _utime(a1, a2);}
| ^
HsInt32 ghczuwrapperZC9ZCbaseZCSystemziPosixziInternalsZCzuutime(char* a1, struct utimbuf* a2) {return _utime(a1, a2);}
^~
C:\GitLabRunner\builds\0\1709189\_build\stage0\lib\..\..\mingw\x86_64-w64-mingw32\include\sys\utime.h:109:72: error:
note: passing argument to parameter '_Utimbuf' here
|
109 | __CRT_INLINE int __cdecl _utime(const char *_Filename,struct _utimbuf *_Utimbuf) {
| ^
__CRT_INLINE int __cdecl _utime(const char *_Filename,struct _utimbuf *_Utimbuf) {
```
- - - - -
ae89f000 by Hassan Al-Awwadi at 2025-08-27T07:19:56-04:00
Adds the fucnction addDependentDirectory to Q, resolving issue #26148.
This function adds a new directory to the list of things a module depends upon. That means that when the contents of the directory change, the recompilation checker will notice this and the module will be recompiled. Documentation has also been added for addDependentFunction and addDependentDirectory in the user guide.
- - - - -
00478944 by Simon Peyton Jones at 2025-08-27T16:48:30+01:00
Comments only
- - - - -
a7884589 by Simon Peyton Jones at 2025-08-28T11:08:23+01:00
Type-family occurs check in unification
The occurs check in `GHC.Core.Unify.uVarOrFam` was inadequate in dealing
with type families.
Better now. See Note [The occurs check in the Core unifier].
As I did this I realised that the whole apartness thing is trickier than I
thought: see the new Note [Shortcomings of the apartness test]
- - - - -
8adfc222 by sheaf at 2025-08-28T19:47:17-04:00
Fix orientation in HsWrapper composition (<.>)
This commit fixes the order in which WpCast HsWrappers are composed,
fixing a bug introduced in commit 56b32c5a2d5d7cad89a12f4d74dc940e086069d1.
Fixes #26350
- - - - -
eb2ab1e2 by Oleg Grenrus at 2025-08-29T11:00:53-04:00
Generalise thNameToGhcName by adding HasHscEnv
There were multiple single monad-specific `getHscEnv` across codebase.
HasHscEnv is modelled on HasDynFlags.
My first idea was to simply add thNameToGhcNameHsc and
thNameToGhcNameTc, but those would been exactly the same
as thNameToGhcName already.
Also add an usage example to thNameToGhcName and mention that it's
recommended way of looking up names in GHC plugins
- - - - -
2d575a7f by fendor at 2025-08-29T11:01:36-04:00
configure: Bump minimal bootstrap GHC version to 9.10
- - - - -
716274a5 by Simon Peyton Jones at 2025-08-29T17:27:12-04:00
Fix deep subsumption again
This commit fixed #26255:
commit 56b32c5a2d5d7cad89a12f4d74dc940e086069d1
Author: sheaf <sam.derbyshire(a)gmail.com>
Date: Mon Aug 11 15:50:47 2025 +0200
Improve deep subsumption
This commit improves the DeepSubsumption sub-typing implementation
in GHC.Tc.Utils.Unify.tc_sub_type_deep by being less eager to fall back
to unification.
But alas it still wasn't quite right for view patterns: #26331
This MR does a generalisation to fix it. A bit of a sledgehammer to crack
a nut, but nice.
* Add a field `ir_inst :: InferInstFlag` to `InferResult`, where
```
data InferInstFlag = IIF_Sigma | IIF_ShallowRho | IIF_DeepRho
```
* The flag says exactly how much `fillInferResult` should instantiate
before filling the hole.
* We can also use this to replace the previous very ad-hoc `tcInferSigma`
that was used to implement GHCi's `:type` command.
- - - - -
27206c5e by sheaf at 2025-08-29T17:28:14-04:00
Back-compat for TH SpecialiseP data-con of Pragma
This commit improves the backwards-compatibility story for the
SpecialiseP constructor of the Template Haskell 'Pragma' datatype.
Instead of keeping the constructor but deprecating it, this commit makes
it into a bundled pattern synonym of the Pragma datatype. We no longer
deprecate it; it's useful for handling old-form specialise pragmas.
- - - - -
26dbcf61 by fendor at 2025-08-30T05:10:08-04:00
Move stack decoding logic from ghc-heap to ghc-internal
The stack decoding logic in `ghc-heap` is more sophisticated than the one
currently employed in `CloneStack`. We want to use the stack decoding
implementation from `ghc-heap` in `base`.
We cannot simply depend on `ghc-heap` in `base` due do bootstrapping
issues.
Thus, we move the code that is necessary to implement stack decoding to
`ghc-internal`. This is the right location, as we don't want to add a
new API to `base`.
Moving the stack decoding logic and re-exposing it in ghc-heap is
insufficient, though, as we have a dependency cycle between.
* ghc-heap depends on stage1:ghc-internal
* stage0:ghc depends on stage0:ghc-heap
To fix this, we remove ghc-heap from the set of `stage0` dependencies.
This is not entirely straight-forward, as a couple of boot dependencies,
such as `ghci` depend on `ghc-heap`.
Luckily, the boot compiler of GHC is now >=9.10, so we can migrate `ghci`
to use `ghc-internal` instead of `ghc-heap`, which already exports the
relevant modules.
However, we cannot 100% remove ghc's dependency on `ghc-heap`, since
when we compile `stage0:ghc`, `stage1:ghc-internal` is not yet
available.
Thus, when we compile with the boot-compiler, we still depend on an
older version of `ghc-heap`, and only use the modules from `ghc-internal`,
if the `ghc-internal` version is recent enough.
-------------------------
Metric Increase:
T24602_perf_size
T25046_perf_size_gzip
T25046_perf_size_unicode
T25046_perf_size_unicode_gzip
size_hello_artifact
size_hello_artifact_gzip
size_hello_unicode
size_hello_unicode_gzip
-------------------------
These metric increases are unfortunate, they are most likely caused by
the larger (literally in terms of lines of code) stack decoder implementation
that are now linked into hello-word binaries.
On linux, it is almost a 10% increase, which is considerable.
- - - - -
bd80bb70 by fendor at 2025-08-30T05:10:08-04:00
Implement `decode` in terms of `decodeStackWithIpe`
Uses the more efficient stack decoder implementation.
- - - - -
24441165 by fendor at 2025-08-30T05:10:08-04:00
Remove stg_decodeStackzh
- - - - -
fb9cc882 by Simon Peyton Jones at 2025-08-30T05:10:51-04:00
Fix a long standing bug in the coercion optimiser
We were mis-optimising ForAllCo, leading to #26345
Part of the poblem was the tricky tower of abstractions leading to
the dreadful
GHC.Core.TyCo.Subst.substForAllCoTyVarBndrUsing
This function was serving two masters: regular substitution, but also
coercion optimsation. So tricky was it that it did so wrong.
In this MR I locate all the fancy footwork for coercion optimisation
in GHC.Core.Coercion.Opt, where it belongs. That leaves substitution
free to be much simpler.
- - - - -
6c78de2d by Sylvain Henry at 2025-09-01T08:46:19-04:00
Driver: substitute virtual Prim module in --make mode too
When we build ghc-internal with --make (e.g. with cabal-install), we
need to be careful to substitute the virtual interface file for
GHC.Internal.Prim:
- after code generation (we generate code for an empty module, so we get
an empty interface)
- when we try to reload its .hi file
- - - - -
26e0db16 by fendor at 2025-09-01T08:47:01-04:00
Expose Stack Annotation frames in IPE backtraces by default
When decoding the Haskell-native call stack and displaying the IPE information
for the stack frames, we print the `StackAnnotation` of the `AnnFrame` by default.
This means, when an exception is thrown, any intermediate stack annotations will
be displayed in the `IPE Backtrace`.
Example backtrace:
```
Exception: ghc-internal:GHC.Internal.Exception.ErrorCall:
Oh no!
IPE backtrace:
annotateCallStackIO, called at app/Main.hs:48:10 in backtrace-0.1.0.0-inplace-server:Main
annotateCallStackIO, called at app/Main.hs:46:13 in backtrace-0.1.0.0-inplace-server:Main
Main.handler (app/Main.hs:(46,1)-(49,30))
Main.liftIO (src/Servant/Server/Internal/Handler.hs:30:36-42)
Servant.Server.Internal.Delayed.runHandler' (src/Servant/Server/Internal/Handler.hs:27:31-41)
Control.Monad.Trans.Resource.runResourceT (./Control/Monad/Trans/Resource.hs:(192,14)-(197,18))
Network.Wai.Handler.Warp.HTTP1.processRequest (./Network/Wai/Handler/Warp/HTTP1.hs:195:20-22)
Network.Wai.Handler.Warp.HTTP1.processRequest (./Network/Wai/Handler/Warp/HTTP1.hs:(195,5)-(203,31))
Network.Wai.Handler.Warp.HTTP1.http1server.loop (./Network/Wai/Handler/Warp/HTTP1.hs:(141,9)-(157,42))
HasCallStack backtrace:
error, called at app/Main.hs:48:32 in backtrace-0.1.0.0-inplace-server:Main
```
The first two entries have been added by `annotateCallStackIO`, defined in `annotateCallStackIO`.
- - - - -
a1567efd by Sylvain Henry at 2025-09-01T23:01:35-04:00
RTS: rely less on Hadrian for flag setting (#25843)
Hadrian used to pass -Dfoo command-line flags directly to build the rts.
We can replace most of these flags with CPP based on cabal flags.
It makes building boot libraries with cabal-install simpler (cf #25843).
- - - - -
ca5b0283 by Sergey Vinokurov at 2025-09-01T23:02:23-04:00
Remove unnecessary irrefutable patterns from Bifunctor instances for tuples
Implementation of https://github.com/haskell/core-libraries-committee/issues/339
Metric Decrease:
mhu-perf
- - - - -
2da84b7a by sheaf at 2025-09-01T23:03:23-04:00
Only use active rules when simplifying rule RHSs
When we are simplifying the RHS of a rule, we make sure to only apply
rewrites from rules that are active throughout the original rule's
range of active phases.
For example, if a rule is always active, we only fire rules that are
themselves always active when simplifying the RHS. Ditto for inline
activations.
This is achieved by setting the simplifier phase to a range of phases,
using the new SimplPhaseRange constructor. Then:
1. When simplifying the RHS of a rule, or of a stable unfolding,
we set the simplifier phase to a range of phases, computed from
the activation of the RULE/unfolding activation, using the
function 'phaseFromActivation'.
The details are explained in Note [What is active in the RHS of a RULE?]
in GHC.Core.Opt.Simplify.Utils.
2. The activation check for other rules and inlinings is then:
does the activation of the other rule/inlining cover the whole
phase range set in sm_phase? This continues to use the 'isActive'
function, which now accounts for phase ranges.
On the way, this commit also moves the exact-print SourceText annotation
from the Activation datatype to the ActivationAnn type. This keeps the
main Activation datatype free of any extra cruft.
Fixes #26323
- - - - -
79816cc4 by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
cleanup: Move dehydrateCgBreakInfo to Stg2Bc
This no longer has anything to do with Core.
- - - - -
53da94ff by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
rts/Disassembler: Fix spacing of BRK_FUN
- - - - -
08c0cf85 by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
debugger: Fix bciPtr in Step-out
We need to use `BCO_NEXT` to move bciPtr to ix=1, because ix=0 points to
the instruction itself!
I do not understand how this didn't crash before.
- - - - -
e7e021fa by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
debugger: Allow BRK_FUNs to head case continuation BCOs
When we start executing a BCO, we may want to yield to the scheduler:
this may be triggered by a heap/stack check, context switch, or a
breakpoint. To yield, we need to put the stack in a state such that
when execution is resumed we are back to where we yielded from.
Previously, a BKR_FUN could only head a function BCO because we only
knew how to construct a valid stack for yielding from one -- simply add
`apply_interp_info` + the BCO to resume executing. This is valid because
the stack at the start of run_BCO is headed by that BCO's arguments.
However, in case continuation BCOs (as per Note [Case continuation BCOs]),
we couldn't easily reconstruct a valid stack that could be resumed
because we dropped too soon the stack frames regarding the value
returned (stg_ret) and received (stg_ctoi) by that continuation.
This is especially tricky because of the variable type and size return
frames (e.g. pointer ret_p/ctoi_R1p vs a tuple ret_t/ctoi_t2).
The trick to being able to yield from a BRK_FUN at the start of a case
cont BCO is to stop removing the ret frame headers eagerly and instead
keep them until the BCO starts executing. The new layout at the start of
a case cont. BCO is described by the new Note [Stack layout when entering run_BCO].
Now, we keep the ret_* and ctoi_* frames when entering run_BCO.
A BRK_FUN is then executed if found, and the stack is yielded as-is with
the preserved ret and ctoi frames.
Then, a case cont BCO's instructions always SLIDE off the headers of the
ret and ctoi frames, in StgToByteCode.doCase, turning a stack like
| .... |
+---------------+
| fv2 |
+---------------+
| fv1 |
+---------------+
| BCO |
+---------------+
| stg_ctoi_ret_ |
+---------------+
| retval |
+---------------+
| stg_ret_..... |
+---------------+
into
| .... |
+---------------+
| fv2 |
+---------------+
| fv1 |
+---------------+
| retval |
+---------------+
for the remainder of the BCO.
Moreover, this more uniform approach of keeping the ret and ctoi frames
means we need less ad-hoc logic concerning the variable size of
ret_tuple vs ret_p/np frames in the code generator and interpreter:
Always keep the return to cont. stack intact at the start of run_BCO,
and the statically generated instructions will take care of adjusting
it.
Unlocks BRK_FUNs at the start of case cont. BCOs which will enable a
better user-facing step-out (#26042) which is free of the bugs the
current BRK_ALTS implementation suffers from (namely, using BRK_FUN
rather than BRK_ALTS in a case cont. means we'll never accidentally end
up in a breakpoint "deeper" than the continuation, because we stop at
the case cont itself rather than on the first breakpoint we evaluate
after it).
- - - - -
ade3c1e6 by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
BRK_FUN with InternalBreakLocs for code-generation time breakpoints
At the start of a case continuation BCO, place a BRK_FUN.
This BRK_FUN uses the new "internal breakpoint location" -- allowing us
to come up with a valid source location for this breakpoint that is not associated with a source-level tick.
For case continuation BCOs, we use the last tick seen before it as the
source location. The reasoning is described in Note [Debugger: Stepout internal break locs].
Note how T26042c, which was broken because it displayed the incorrect
behavior of the previous step out when we'd end up at a deeper level
than the one from which we initiated step-out, is now fixed.
As of this commit, BRK_ALTS is now dead code and is thus dropped.
Note [Debugger: Stepout internal break locs]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step-out tells the interpreter to run until the current function
returns to where it was called from, and stop there.
This is achieved by enabling the BRK_FUN found on the first RET_BCO
frame on the stack (See [Note Debugger: Step-out]).
Case continuation BCOs (which select an alternative branch) must
therefore be headed by a BRK_FUN. An example:
f x = case g x of <--- end up here
1 -> ...
2 -> ...
g y = ... <--- step out from here
- `g` will return a value to the case continuation BCO in `f`
- The case continuation BCO will receive the value returned from g
- Match on it and push the alternative continuation for that branch
- And then enter that alternative.
If we step-out of `g`, the first RET_BCO on the stack is the case
continuation of `f` -- execution should stop at its start, before
selecting an alternative. (One might ask, "why not enable the breakpoint
in the alternative instead?", because the alternative continuation is
only pushed to the stack *after* it is selected by the case cont. BCO)
However, the case cont. BCO is not associated with any source-level
tick, it is merely the glue code which selects alternatives which do
have source level ticks. Therefore, we have to come up at code
generation time with a breakpoint location ('InternalBreakLoc') to
display to the user when it is stopped there.
Our solution is to use the last tick seen just before reaching the case
continuation. This is robust because a case continuation will thus
always have a relevant breakpoint location:
- The source location will be the last source-relevant expression
executed before the continuation is pushed
- So the source location will point to the thing you've just stepped
out of
- Doing :step-local from there will put you on the selected
alternative (which at the source level may also be the e.g. next
line in a do-block)
Examples, using angle brackets (<<...>>) to denote the breakpoint span:
f x = case <<g x>> {- step in here -} of
1 -> ...
2 -> ...>
g y = <<...>> <--- step out from here
...
f x = <<case g x of <--- end up here, whole case highlighted
1 -> ...
2 -> ...>>
doing :step-local ...
f x = case g x of
1 -> <<...>> <--- stop in the alternative
2 -> ...
A second example based on T26042d2, where the source is a do-block IO
action, optimised to a chain of `case expressions`.
main = do
putStrLn "hello1"
<<f>> <--- step-in here
putStrLn "hello3"
putStrLn "hello4"
f = do
<<putStrLn "hello2.1">> <--- step-out from here
putStrLn "hello2.2"
...
main = do
putStrLn "hello1"
<<f>> <--- end up here again, the previously executed expression
putStrLn "hello3"
putStrLn "hello4"
doing step/step-local ...
main = do
putStrLn "hello1"
f
<<putStrLn "hello3">> <--- straight to the next line
putStrLn "hello4"
Finishes #26042
- - - - -
c66910c0 by Rodrigo Mesquita at 2025-09-02T12:19:59-04:00
debugger: Re-use the last BreakpointId whole in step-out
Previously, to come up with a location to stop at for `:stepout`, we
would store the location of the last BreakpointId surrounding the
continuation, as described by Note [Debugger: Stepout internal break locs].
However, re-using just the location from the last source breakpoint
isn't sufficient to provide the necessary information in the break
location. Specifically, it wouldn't bind any variables at that location.
Really, there is no reason not to re-use the last breakpoint wholesale,
and re-use all the information we had there. Step-out should behave just
as if we had stopped at the call, but s.t. continuing will not
re-execute the call.
This commit updates the CgBreakInfo to always store a BreakpointId, be
it the original one or the one we're emulating (for step-out).
It makes variable bindings on :stepout work
- - - - -
e4abed7b by sheaf at 2025-09-02T12:20:40-04:00
Revert accidental changes to hie.yaml
- - - - -
003b715b by meooow25 at 2025-09-02T23:48:51+02:00
Adjust the strictness of Data.List.iterate'
* Don't force the next element in advance when generating a (:).
* Force the first element to WHNF like every other element.
Now every element in the output list is forced to WHNF when the (:)
containing it is forced.
CLC proposal:
https://github.com/haskell/core-libraries-committee/issues/335
- - - - -
b2f6aad0 by Simon Hengel at 2025-09-03T04:36:10-04:00
Refactoring: More consistently use logOutput, logInfo, fatalErrorMsg
- - - - -
60a16db7 by Rodrigo Mesquita at 2025-09-03T10:55:50+01:00
bytecode: Don't PUSH_L 0; SLIDE 1 1
While looking through bytecode I noticed a quite common unfortunate
pattern:
...
PUSH_L 0
SLIDE 1 1
We do this often by generically constructing a tail call from a function
atom that may be somewhere arbitrary on the stack.
However, for the special case that the function can be found directly on
top of the stack, as part of the arguments, it's plain redundant to push
then slide it.
In this commit we add a small optimisation to the generation of
tailcalls in bytecode. Simply: lookahead for the function in the stack.
If it is the first thing on the stack and it is part of the arguments
which would be dropped as we entered the tail call, then don't push then
slide it.
In a simple example (T26042b), this already produced a drastic
improvement in generated code (left is old, right is with this patch):
```diff
3c3
< 2025-07-29 10:14:02.081277 UTC
---
> 2025-07-29 10:50:36.560949 UTC
160,161c160
< PUSH_L 0
< SLIDE 1 2
---
> SLIDE 1 1
164,165d162
< PUSH_L 0
< SLIDE 1 1
175,176c172
< PUSH_L 0
< SLIDE 1 2
---
> SLIDE 1 1
179,180d174
< PUSH_L 0
< SLIDE 1 1
206,207d199
< PUSH_L 0
< SLIDE 1 1
210,211d201
< PUSH_L 0
< SLIDE 1 1
214,215d203
< PUSH_L 0
< SLIDE 1 1
218,219d205
< PUSH_L 0
< SLIDE 1 1
222,223d207
< PUSH_L 0
< SLIDE 1 1
...
600,601c566
< PUSH_L 0
< SLIDE 1 2
---
> SLIDE 1 1
604,605d568
< PUSH_L 0
< SLIDE 1 1
632,633d594
< PUSH_L 0
< SLIDE 1 1
636,637d596
< PUSH_L 0
< SLIDE 1 1
640,641d598
< PUSH_L 0
< SLIDE 1 1
644,645d600
< PUSH_L 0
< SLIDE 1 1
648,649d602
< PUSH_L 0
< SLIDE 1 1
652,653d604
< PUSH_L 0
< SLIDE 1 1
656,657d606
< PUSH_L 0
< SLIDE 1 1
660,661d608
< PUSH_L 0
< SLIDE 1 1
664,665d610
< PUSH_L 0
< SLIDE 1 1
```
I also compiled lib:Cabal to bytecode and counted the number of bytecode
lines with `find dist-newstyle -name "*.dump-BCOs" -exec wc {} +`:
with unoptimized core:
1190689 lines (before) - 1172891 lines (now)
= 17798 less redundant instructions (-1.5% lines)
with optimized core:
1924818 lines (before) - 1864836 lines (now)
= 59982 less redundant instructions (-3.1% lines)
- - - - -
8b2c72c0 by L0neGamer at 2025-09-04T06:32:03-04:00
Add Control.Monad.thenM and Control.Applicative.thenA
- - - - -
39e1b7cb by Teo Camarasu at 2025-09-04T06:32:46-04:00
ghc-internal: invert dependency of GHC.Internal.TH.Syntax on Data.Data
This means that Data.Data no longer blocks building TH.Syntax, which
allows greater parallelism in our builds.
We move the Data.Data.Data instances to Data.Data. Quasi depends on
Data.Data for one of its methods, so,
we split the Quasi/Q, etc definition out of GHC.Internal.TH.Syntax
into its own module. This has the added benefit of splitting up this
quite large module.
Previously TH.Syntax was a bottleneck when compiling ghc-internal. Now
it is less of a bottle-neck and is also slightly quicker to
compile (since it no longer contains these instances) at the cost of
making Data.Data slightly more expensive to compile.
TH.Lift which depends on TH.Syntax can also compile quicker and no
longer blocks ghc-internal finishing to compile.
Resolves #26217
-------------------------
Metric Decrease:
MultiLayerModulesTH_OneShot
T13253
T21839c
T24471
Metric Increase:
T12227
-------------------------
- - - - -
bdf82fd2 by Teo Camarasu at 2025-09-04T06:32:46-04:00
compiler: delete unused names in Builtins.Names.TH
returnQ and bindQ are no longer used in the compiler.
There was also a very old comment that referred to them that I have modernized
- - - - -
41a448e5 by Ben Gamari at 2025-09-04T19:21:43-04:00
hadrian: Pass lib & include directories to ghc `Setup configure`
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46bb9a79 by Ben Gamari at 2025-09-04T19:21:44-04:00
rts/IPE: Fix compilation when zstd is enabled
This was broken by the refactoring undertaken in
c80dd91c0bf6ac034f0c592f16c548b9408a8481.
Closes #26312.
- - - - -
138a6e34 by sheaf at 2025-09-04T19:22:46-04:00
Make mkCast assertion a bit clearer
This commit changes the assertion message that gets printed when one
calls mkCast with a coercion whose kind does not match the type of the
inner expression. I always found the assertion message a bit confusing,
as it didn't clearly state what exactly was the error.
- - - - -
9d626be1 by sheaf at 2025-09-04T19:22:46-04:00
Simplifier/rules: fix mistakes in Notes & comments
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94b62aa7 by Simon Peyton Jones at 2025-09-08T03:37:14-04:00
Refactor ForAllCo
This is a pure refactor, addressing #26389.
It arranges that the kind coercion in a ForAllCo is a MCoercion, rather
than a plain Coercion, thus removing redundancy in the common case.
See (FC8) in Note [ForAllCo]
It's a nice cleanup.
- - - - -
624afa4a by sheaf at 2025-09-08T03:38:05-04:00
Use tcMkScaledFunTys in matchExpectedFunTys
We should use tcMkScaledFunTys rather than mkScaledFunTys in
GHC.Tc.Utils.Unify.matchExpectedFunTys, as the latter crashes
when the kind of the result type is a bare metavariable.
We know the result is always Type-like, so we don't need scaledFunTys
to try to rediscover that from the kind.
Fixes #26277
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0975d2b6 by sheaf at 2025-09-08T03:38:54-04:00
Revert "Remove hptAllFamInstances usage during upsweep"
This reverts commit 3bf6720eff5e86e673568e756161e6d6150eb440.
- - - - -
0cf34176 by soulomoon at 2025-09-08T03:38:54-04:00
Family consistency checks: add test for #26154
This commit adds the test T26154, to make sure that GHC doesn't crash
when performing type family consistency checks. This test case
was extracted from Agda.
Fixes #26154
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ba210d98 by Simon Peyton Jones at 2025-09-08T16:26:36+01:00
Report solid equality errors before custom errors
This MR fixes #26255 by
* Reporting solid equality errors like
Int ~ Bool
before "custom type errors". See comments in `report1` in
`reportWanteds`
* Suppressing errors that arise from superclasses of
Wanteds. See (SCE1) in Note [Suppressing confusing errors]
More details in #26255.
- - - - -
b6249140 by Simon Peyton Jones at 2025-09-10T10:42:38-04:00
Fix a scoping error in Specialise
This small patch fixes #26329, which triggered a scoping error.
Test is in T21391, with -fpolymorphic-specialisation enabled
- - - - -
45305ab8 by sheaf at 2025-09-10T10:43:29-04:00
Make rationalTo{Float,Double} inline in phase 0
We hold off on inlining these until phase 0 to allow constant-folding
rules to fire. However, once we get to phase 0, we should inline them,
e.g. to expose unboxing opportunities.
See CLC proposal #356.
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0959d4bc by Andreas Klebinger at 2025-09-10T10:44:12-04:00
Add regression test for #26056
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dc79593d by sheaf at 2025-09-10T10:45:01-04:00
Deep subsumption: unify mults without tcEqMult
As seen in #26332, we may well end up with a non-reflexive multiplicity
coercion when doing deep subsumption. We should do the same thing that
we do without deep subsumption: unify the multiplicities normally,
without requiring that the coercion is reflexive (which is what
'tcEqMult' was doing).
Fixes #26332
- - - - -
4bfe2269 by sheaf at 2025-09-10T10:45:50-04:00
lint-codes: fixup MSYS drive letter on Windows
This change ensures that System.Directory.listDirectory doesn't trip up
on an MSYS-style path like '/c/Foo' when trying to list all testsuite
stdout/stderr files as required for testing coverage of GHC diagnostic
codes in the testsuite.
Fixes #25178
- - - - -
56540775 by Ben Gamari at 2025-09-10T10:46:32-04:00
gitlab-ci: Disable split sections on FreeBSD
Due to #26303.
- - - - -
1537784b by Moritz Angermann at 2025-09-10T10:47:13-04:00
Improve mach-o relocation information
This change adds more information about the symbol and addresses
we try to relocate in the linker. This significantly helps when
deubbging relocation issues reported by users.
- - - - -
4e67855b by Moritz Angermann at 2025-09-10T10:47:54-04:00
test.mk expect GhcLeadingUnderscore, not LeadingUnderscore (in line with the other Ghc prefixed variables.
- - - - -
c1cdd265 by Moritz Angermann at 2025-09-10T10:48:35-04:00
testsuite: Fix broken exec_signals_child.c
There is no signal 0. The signal mask is 1-32.
- - - - -
99ac335c by Moritz Angermann at 2025-09-10T10:49:15-04:00
testsuite: clarify Windows/Darwin locale rationale for skipping T6037 T2507 T8959a
- - - - -
0e8fa77a by Moritz Angermann at 2025-09-10T10:49:56-04:00
Skip broken tests on macOS (due to leading underscore not handled properly in the expected output.)
- - - - -
28570c59 by Zubin Duggal at 2025-09-10T10:50:37-04:00
docs(sphinx): fix links to reverse flags when using the :ghc-flag:`-fno-<flag>` syntax
This solution is rather hacky and I suspect there is a better way to do this but I don't know
enough about Sphinx to do better.
Fixes #26352
- - - - -
d17257ed by Cheng Shao at 2025-09-10T17:01:27+02:00
rel-eng: update alpine images to 3.22
This patch is a part of #25876 and updates alpine images to 3.22,
while still retaining 3.12 for x86_64 fully_static bindists.
-------------------------
Metric Decrease:
MultiComponentModulesRecomp
-------------------------
- - - - -
db3276bb by Sylvain Henry at 2025-09-11T11:27:28-04:00
T16180: indicate that the stack isn't executable
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11eeeba7 by Sylvain Henry at 2025-09-11T11:27:28-04:00
Fix some tests (statically linked GHC vs libc)
When GHC is linked statically, the stdout C global variable that GHC uses
isn't shared with the stdout C global variable used by loaded code.
As a consequence, the latter must be explicitly flushed because GHC
won't flush it before exiting.
- - - - -
80a07571 by Sylvain Henry at 2025-09-11T11:28:18-04:00
Testsuite: fix debug_rts detection
Running the testsuite without Hadrian should set config.debug_rts
correctly too.
- - - - -
62ae97de by Duncan Coutts at 2025-09-12T13:23:33-04:00
Handle heap allocation failure in I/O primops
The current I/O managers do not use allocateMightFail, but future ones
will. To support this properly we need to be able to return to the
primop with a failure. We simply use a bool return value.
Currently however, we will just throw an exception rather than calling
the GC because that's what all the other primops do too.
For the general issue of primops invoking GC and retrying, see
https://gitlab.haskell.org/ghc/ghc/-/issues/24105
- - - - -
cb9093f5 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Move (and rename) scheduleStartSignalHandlers into RtsSignals.h
Previously it was a local helper (static) function in Schedule.c.
Rename it to startPendingSignalHandlers and deifine it as an inline
header function in RtsSignals.h. So it should still be fast.
Each (new style) I/O manager is going to need to do the same, so eliminating
the duplication now makes sense.
- - - - -
9736d44a by Duncan Coutts at 2025-09-12T13:23:33-04:00
Reduce detail in printThreadBlockage I/O blocking cases
The printThreadBlockage is used in debug tracing output.
For the cases BlockedOn{Read,Write,Delay} the output previously included
the fd that was being waited on, and the delay target wake time.
Superficially this sounds useful, but it's clearly not that useful
because it was already wrong for the Win32 non-threaded I/O manager. In
that situation it will print garbage (the async_result pointer, cast to
a fd or a time).
So given that it apparently never mattered that the information was
accurate, then it's hardly a big jump to say it doesn't matter if it is
present at all.
A good reason to remove it is that otherwise we have to make a new
API and a per-I/O manager implementation to fetch the information. And
for some I/O manager implementations, this information is not available.
It is not available in the win32 non-threaded I/O manager. And for some
future Linux ones, there is no need for the fd to be stored, so storing
it would be just extra space used for very little gain.
So the simplest thing is to just remove the detail.
- - - - -
bc0f2d5d by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add TimeoutQueue.{c,h} and corresponding tests
A data structure used to efficiently manage a collection of timeouts.
It is a priority queue based on absolute expiry time. It uses 64bit
high-precision Time for the keys. The values are normal closures which
allows for example using MVars for unblocking.
It is common in many applications for timeouts to be created and then
deleted or altered before they expire. Thus the choice of data structure
for timeouts should support this efficiently. The implementation choice
here is a leftist heap with the extra feature that it supports deleting
arbitrary elements, provided the caller retain a pointer to the element.
While the deleteMin operation takes O(log n) time, as in all heap
structures, the delete operation for arbitrary elements /typically/
takes O(1), and only O(log n) in the worst case. In practice, when
managing thousands of timeouts it can be a factor of 10 faster to delete
a random timeout queue element than to remove the minimum element. This
supports the common use case.
The plan is to use it in some of the RTS-side I/O managers to support
their timer functionality. In this use case the heap value will be an
MVar used for each timeout to unblock waiting threads.
- - - - -
d1679c9d by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add ClosureTable.{c,h} and corresponding tests
A table of pointers to closures on the GC heap with stable indexes.
It provides O(1) alloc, free and lookup. The table can be expanded
using a simple doubling strategy: in which case allocation is typically
O(1) and occasionally O(n) for overall amortised O(1). No shrinking is
used.
The table itself is heap allocated, and points to other heap objects.
As such it's necessary to use markClosureTable to ensure the table is
used as a GC root to keep the table entries alive, and maintain proper
pointers to them as the GC moves heap objects about.
It is designed to be allocated and accesses exclusively from a single
capability, enabling it to work without any locking. It is thus similar
to the StablePtr table, but per-capability which removes the need for
locking. It _should_ also provide lower GC pause times with the
non-moving GC by spending only O(1) time in markClosureTable, vs O(n)
for markStablePtrTable.
The plan is to use it in some of the I/O managers to keep track of
in-flight I/O operations (but not timers). This allows the tracking
info to be kept on the (unpinned) GC heap, and shared with Haskell
code, and by putting a pointer to the tracking information in a table,
the index remains stable and can be passed via foreign code (like the
kernel).
- - - - -
78cb8dd5 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add the StgAsyncIOOp closure type
This is intended to be used by multiple I/O managers to help with
tracking in-flight I/O operations.
It is called asynchronous because from the point of view of the RTS we
have many such operations in progress at once. From the point of view of
a Haskell thread of course it can look synchronous.
- - - - -
a2839896 by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add StgAsyncIOOp and StgTimeoutQueue to tso->block_info
These will be used by new I/O managers, for threads blocked on I/O or
timeouts.
- - - - -
fdc2451c by Duncan Coutts at 2025-09-12T13:23:33-04:00
Add a new I/O manager based on poll()
This is a proof of concept I/O manager, to show how to add new ones
neatly, using the ClosureTable and TimeoutQueue infrastructure.
It uses the old unix poll() API, so it is of course limited in
performance by that, but it should have the benefit of wide
compatibility. Also we neatly avoid a name clash with the existing
select() I/O manager.
Compared to the select() I/O manager:
1. beause it uses poll() it is not limited to 1024 file descriptors
(but it's still O(n) so don't expect great performance);
2. it should have much faster threadDelay (when using it in lots of
threads at once) because it's based on the new TimeoutQueue which is
O(log n) rather than O(n).
Some of the code related to timers/timouts is put into a shared module
rts/posix/Timeout.{h,c} since it is intended to be shared with other
similar I/O managers.
- - - - -
6c273b76 by Duncan Coutts at 2025-09-12T13:23:34-04:00
Document the I/O managers in the user guide
and note the new poll I/O manager in the release notes.
- - - - -
824fab74 by Duncan Coutts at 2025-09-12T13:23:34-04:00
Use the poll() I/O manager by default
That is, for the non-threaded RTS, prefer the poll I/O manager over the
legacy select() one, if both can be enabled.
This patch is primarily for CI testing, so we should probably remove
this patch before merging. We can change defaults later after wider
testing and feedback.
- - - - -
39392532 by Luite Stegeman at 2025-09-12T13:24:16-04:00
Support larger unboxed sums
Change known constructor encoding for sums in interfaces to use
11 bits for both the arity and the alternative (up from 8 and 6,
respectively)
- - - - -
2af12e21 by Luite Stegeman at 2025-09-12T13:24:16-04:00
Decompose padding smallest-first in Cmm toplevel data constructors
This makes each individual padding value aligned
- - - - -
418fa78f by Luite Stegeman at 2025-09-12T13:24:16-04:00
Use slots smaller than word as tag for smaller unboxed sums
This packs unboxed sums more efficiently by allowing
Word8, Word16 and Word32 for the tag field if the number of
constructors is small enough
- - - - -
8d7e912f by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Use ByteOrder rather than new Endianness
Don't introduce a duplicate datatype when the previous one is equivalent
and already used elsewhere. This avoids unnecessary translation between
the two.
- - - - -
7d378476 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
Read Toolchain.Target files rather than 'settings'
This commit makes GHC read `lib/targets/default.target`, a file with a
serialized value of `ghc-toolchain`'s `GHC.Toolchain.Target`.
Moreover, it removes all the now-redundant entries from `lib/settings`
that are configured as part of a `Target` but were being written into
`settings`.
This makes it easier to support multiple targets from the same compiler
(aka runtime retargetability). `ghc-toolchain` can be re-run many times
standalone to produce a `Target` description for different targets, and,
in the future, GHC will be able to pick at runtime amongst different
`Target` files.
This commit only makes it read the default `Target` configured in-tree
or configured when installing the bindist.
The remaining bits of `settings` need to be moved to `Target` in follow
up commits, but ultimately they all should be moved since they are
per-target relevant.
Fixes #24212
On Windows, the constant overhead of parsing a slightly more complex
data structure causes some small-allocation tests to wiggle around 1 to
2 extra MB (1-2% in these cases).
-------------------------
Metric Increase:
MultiLayerModulesTH_OneShot
T10421
T10547
T12234
T12425
T13035
T18140
T18923
T9198
TcPlugin_RewritePerf
-------------------------
- - - - -
e0780a16 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Move TgtHasLibm to per-Target file
TargetHasLibm is now part of the per-target configuration
Towards #26227
- - - - -
8235dd8c by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00
ghc-toolchain: Move UseLibdw to per-Target file
To support DWARF unwinding, the RTS must be built with the -f+libdw flag
and with the -DUSE_LIBDW macro definition. These flags are passed on
build by Hadrian when --enable-dwarf-unwinding is specified at configure
time.
Whether the RTS was built with support for DWARF is a per-target
property, and as such, it was moved to the per-target
GHC.Toolchain.Target.Target file.
Additionally, we keep in the target file the include and library paths
for finding libdw, since libdw should be checked at configure time (be
it by configure, or ghc-toolchain, that libdw is properly available).
Preserving the user-given include paths for libdw facilitates in the
future building the RTS on demand for a given target (if we didn't keep
that user input, we couldn't)
Towards #26227
- - - - -
d5ecf2e8 by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00
ghc-toolchain: Make "Support SMP" a query on a Toolchain.Target
"Support SMP" is merely a function of target, so we can represent it as
such in `ghc-toolchain`.
Hadrian queries the Target using this predicate to determine how to
build GHC, and GHC queries the Target similarly to report under --info
whether it "Support SMP"
Towards #26227
- - - - -
e07b031a by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00
ghc-toolchain: Make "tgt rts linker only supports shared libs" function on Target
Just like with "Support SMP", "target RTS linker only supports shared
libraries" is a predicate on a `Target` so we can just compute it when
necessary from the given `Target`.
Towards #26227
- - - - -
14123ee6 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00
Solve forall-constraints via an implication, again
In this earlier commit:
commit 953fd8f1dc080f1c56e3a60b4b7157456949be29
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Mon Jul 21 10:06:43 2025 +0100
Solve forall-constraints immediately, or not at all
I used a all-or-nothing strategy for quantified constraints
(aka forall-constraints). But alas that fell foul of #26315,
and #26376.
So this MR goes back to solving a quantified constraint by
turning it into an implication; UNLESS we are simplifying
constraints from a SPECIALISE pragma, in which case the
all-or-nothing strategy is great. See:
Note [Solving a Wanted forall-constraint]
Other stuff in this MR:
* TcSMode becomes a record of flags, rather than an enumeration
type; much nicer.
* Some fancy footwork to avoid error messages worsening again
(The above MR made them better; we want to retain that.)
See `GHC.Tc.Errors.Ppr.pprQCOriginExtra`.
-------------------------
Metric Decrease:
T24471
-------------------------
- - - - -
e6c192e2 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00
Add a test case for #26396
...same bug ast #26315
- - - - -
8f3d80ff by Luite Stegeman at 2025-09-13T08:43:09+02:00
Use mkVirtHeapOffsets for reconstructing terms in RTTI
This makes mkVirtHeapOffsets the single source of truth for
finding field offsets in closures.
- - - - -
eb389338 by Luite Stegeman at 2025-09-13T08:43:09+02:00
Sort non-pointer fields by size for more efficient packing
This sorts non-pointer fields in mkVirtHeapOffsets, always
storing the largest field first. The relative order of
equally sized fields remains unchanged.
This reduces wasted padding/alignment space in closures with
differently sized fields.
- - - - -
99b233f4 by Alison at 2025-09-13T16:51:04-04:00
ghc-heap: Fix race condition with profiling builds
Apply the same fix from Closures.hs (64fd0fac83) to Heap.hs by adding
empty imports to make way-dependent dependencies visible to `ghc -M`.
Fixes #15197, #26407
- - - - -
77deaa7a by Cheng Shao at 2025-09-14T21:29:45-04:00
hadrian: build in-tree gmp with -fvisibility=hidden
When hadrian builds in-tree gmp, it should build the shared objects
with -fvisibility=hidden. The gmp symbols are only used by bignum
logic in ghc-internal and shouldn't be exported by the ghc-internal
shared library. We should always strive to keep shared library symbol
table lean, which benefits platforms with slow dynamic linker or even
hard limits about how many symbols can be exported (e.g. macos dyld,
win32 dll and wasm dyld).
- - - - -
42a18960 by Cheng Shao at 2025-09-14T21:30:26-04:00
Revert "wasm: add brotli compression for ghci browser mode"
This reverts commit 731217ce68a1093b5f9e26a07d5bd2cdade2b352.
Benchmarks show non-negligible overhead when browser runs on the same
host, which is the majority of actual use cases.
- - - - -
e6755b9f by Cheng Shao at 2025-09-14T21:30:26-04:00
wasm: remove etag logic in ghci browser mode web server
This commit removes the etag logic in dyld script's ghci browser mode
web server. It was meant to support caching logic of wasm shared
libraries, but even if the port is manually specified to make caching
even relevant, for localhost the extra overhead around etag logic is
simply not worth it according to benchmarks.
- - - - -
7c1c2ce3 by Ben Gamari at 2025-09-16T12:55:02+02:00
StgToByteCode: Don't assume that data con workers are nullary
Previously StgToByteCode assumed that all data-con workers were of a
nullary representation. This is not a valid assumption, as seen
in #23210, where an unsaturated application of a unary data
constructor's worker resulted in invalid bytecode. Sadly, I have not yet
been able to reduce a minimal testcase for this.
Fixes #23210.
- - - - -
85c98706 by Ben Gamari at 2025-09-16T12:55:02+02:00
testsuite: Mark T23146* as unbroken
- - - - -
861 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/darwin/toolchain.nix
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .mailmap
- CODEOWNERS
- README.md
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps/Ids.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Breakpoints.hs
- compiler/GHC/ByteCode/InfoTable.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Class.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion.hs-boot
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/FamInstEnv.hs
- compiler/GHC/Core/LateCC/OverloadedCalls.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline/Types.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Inline.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/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Reduction.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- + compiler/GHC/CoreToStg/AddImplicitBinds.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/IOEnv.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CmdLine.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
- compiler/GHC/Driver/Config/Finder.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.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/Binds.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/Call.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Binary.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Tidy/StaticPtrTable.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Runtime/Debugger/Breakpoints.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/Stg/Utils.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/DataCon.hs
- compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToJS/Prim.hs
- compiler/GHC/StgToJS/StaticPtr.hs
- compiler/GHC/SysTools/BaseDir.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Infer.hs
- compiler/GHC/Tc/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Expr.hs-boot
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.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/Module.hs
- compiler/GHC/Tc/Solver.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/Rewrite.hs
- compiler/GHC/Tc/Solver/Solve.hs
- + compiler/GHC/Tc/Solver/Solve.hs-boot
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/TyCl/Instance.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/Types/EvTerm.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Id.hs
- compiler/GHC/Types/Id/Make.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/RepType.hs
- compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/TyThing.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Finder/Types.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Module/Deps.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Error.hs
- compiler/GHC/Utils/Logger.hs
- compiler/ghc.cabal.in
- configure.ac
- distrib/configure.ac.in
- − docs/users_guide/9.14.1-notes.rst
- + docs/users_guide/9.16.1-notes.rst
- docs/users_guide/conf.py
- docs/users_guide/debug-info.rst
- + docs/users_guide/diagnostics-as-json-schema-1_2.json
- docs/users_guide/eventlog-formats.rst
- docs/users_guide/expected-undocumented-flags.txt
- docs/users_guide/exts/doandifthenelse.rst
- docs/users_guide/exts/linear_types.rst
- + docs/users_guide/exts/relaxed_poly_rec.rst
- docs/users_guide/exts/strict.rst
- docs/users_guide/exts/types.rst
- docs/users_guide/flags.py
- docs/users_guide/profiling.rst
- docs/users_guide/release-notes.rst
- docs/users_guide/runtime_control.rst
- docs/users_guide/separate_compilation.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using.rst
- docs/users_guide/win32-dlls.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Monad.hs
- ghc/ghc-bin.cabal.in
- hadrian/bindist/Makefile
- hadrian/bindist/config.mk.in
- hadrian/bootstrap/generate_bootstrap_plans
- hadrian/bootstrap/hadrian-bootstrap-gen.cabal
- hadrian/bootstrap/plan-9_10_1.json
- hadrian/bootstrap/plan-9_6_5.json → hadrian/bootstrap/plan-9_10_2.json
- hadrian/bootstrap/plan-9_6_6.json → hadrian/bootstrap/plan-9_12_1.json
- hadrian/bootstrap/plan-9_6_4.json → hadrian/bootstrap/plan-9_12_2.json
- − hadrian/bootstrap/plan-9_6_1.json
- − hadrian/bootstrap/plan-9_6_2.json
- − hadrian/bootstrap/plan-9_6_3.json
- − hadrian/bootstrap/plan-9_8_1.json
- − hadrian/bootstrap/plan-9_8_2.json
- hadrian/bootstrap/plan-bootstrap-9_10_1.json
- hadrian/bootstrap/plan-bootstrap-9_6_5.json → hadrian/bootstrap/plan-bootstrap-9_10_2.json
- hadrian/bootstrap/plan-bootstrap-9_6_6.json → hadrian/bootstrap/plan-bootstrap-9_12_1.json
- hadrian/bootstrap/plan-bootstrap-9_8_1.json → hadrian/bootstrap/plan-bootstrap-9_12_2.json
- − hadrian/bootstrap/plan-bootstrap-9_6_1.json
- − hadrian/bootstrap/plan-bootstrap-9_6_2.json
- − hadrian/bootstrap/plan-bootstrap-9_6_3.json
- − hadrian/bootstrap/plan-bootstrap-9_6_4.json
- − hadrian/bootstrap/plan-bootstrap-9_8_2.json
- hadrian/bootstrap/src/Main.hs
- hadrian/cfg/default.host.target.in
- hadrian/cfg/default.target.in
- hadrian/cfg/system.config.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/ToolArgs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Packages.hs
- hadrian/stack.yaml
- hadrian/stack.yaml.lock
- libffi-tarballs
- libraries/Cabal
- libraries/base/base.cabal.in
- libraries/base/changelog.md
- libraries/base/src/Control/Applicative.hs
- libraries/base/src/Control/Exception/Backtrace.hs
- libraries/base/src/Control/Monad.hs
- libraries/base/src/Data/Array/Byte.hs
- libraries/base/src/Data/Bifunctor.hs
- libraries/base/src/Data/Fixed.hs
- libraries/base/src/Data/List/NonEmpty.hs
- libraries/base/src/GHC/Exts.hs
- libraries/base/src/GHC/Generics.hs
- − libraries/base/src/GHC/IOPort.hs
- libraries/base/src/GHC/RTS/Flags.hs
- libraries/base/src/GHC/Stack/CloneStack.hs
- libraries/base/src/GHC/Weak/Finalize.hs
- libraries/base/src/System/Console/GetOpt.hs
- libraries/directory
- libraries/ghc-bignum/changelog.md
- + libraries/ghc-boot-th/GHC/Boot/TH/Monad.hs
- libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
- libraries/ghc-boot-th/ghc-boot-th.cabal.in
- libraries/ghc-boot/GHC/Settings/Utils.hs
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-experimental/ghc-experimental.cabal.in
- + libraries/ghc-experimental/src/GHC/Exception/Backtrace/Experimental.hs
- + libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs
- libraries/ghc-heap/GHC/Exts/Heap.hs
- libraries/ghc-heap/GHC/Exts/Heap/ClosureTypes.hs
- libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
- + libraries/ghc-heap/GHC/Exts/Heap/Constants.hs
- + libraries/ghc-heap/GHC/Exts/Heap/InfoTable.hs
- + libraries/ghc-heap/GHC/Exts/Heap/InfoTable/Types.hs
- + libraries/ghc-heap/GHC/Exts/Heap/InfoTableProf.hs
- libraries/ghc-heap/GHC/Exts/Heap/ProfInfo/Types.hs
- libraries/ghc-heap/GHC/Exts/Stack.hs
- + libraries/ghc-heap/GHC/Exts/Stack/Constants.hs
- libraries/ghc-heap/GHC/Exts/Stack/Decode.hs
- libraries/ghc-heap/ghc-heap.cabal.in
- libraries/ghc-heap/cbits/HeapPrim.cmm → libraries/ghc-internal/cbits/HeapPrim.cmm
- libraries/ghc-heap/cbits/Stack.cmm → libraries/ghc-internal/cbits/Stack.cmm
- libraries/ghc-internal/cbits/StackCloningDecoding.cmm
- libraries/ghc-heap/cbits/Stack_c.c → libraries/ghc-internal/cbits/Stack_c.c
- libraries/ghc-internal/cbits/pdep.c
- libraries/ghc-internal/cbits/pext.c
- libraries/ghc-internal/ghc-internal.cabal.in
- libraries/ghc-internal/jsbits/base.js
- libraries/ghc-internal/src/GHC/Internal/Base.hs
- libraries/ghc-internal/src/GHC/Internal/Bignum/Natural.hs
- libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Data.hs
- libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
- libraries/ghc-internal/src/GHC/Internal/Event/Windows.hsc
- libraries/ghc-internal/src/GHC/Internal/Event/Windows/Thread.hs
- libraries/ghc-internal/src/GHC/Internal/Exception.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs-boot
- libraries/ghc-internal/src/GHC/Internal/Exts.hs
- libraries/ghc-internal/src/GHC/Internal/Float.hs
- + libraries/ghc-internal/src/GHC/Internal/Heap/Closures.hs
- libraries/ghc-heap/GHC/Exts/Heap/Constants.hsc → libraries/ghc-internal/src/GHC/Internal/Heap/Constants.hsc
- libraries/ghc-heap/GHC/Exts/Heap/InfoTable.hsc → libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable.hsc
- libraries/ghc-heap/GHC/Exts/Heap/InfoTable/Types.hsc → libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable/Types.hsc
- libraries/ghc-heap/GHC/Exts/Heap/InfoTableProf.hsc → libraries/ghc-internal/src/GHC/Internal/Heap/InfoTableProf.hsc
- + libraries/ghc-internal/src/GHC/Internal/Heap/ProfInfo/Types.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Buffer.hs
- libraries/ghc-internal/src/GHC/Internal/IO/Windows/Handle.hsc
- − libraries/ghc-internal/src/GHC/Internal/IOPort.hs
- libraries/ghc-internal/src/GHC/Internal/List.hs
- libraries/ghc-internal/src/GHC/Internal/Prim/PtrEq.hs
- libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc
- libraries/ghc-internal/src/GHC/Internal/Real.hs
- libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs
- + libraries/ghc-internal/src/GHC/Internal/Stack/Annotation.hs
- libraries/ghc-internal/src/GHC/Internal/Stack/CloneStack.hs
- libraries/ghc-heap/GHC/Exts/Stack/Constants.hsc → libraries/ghc-internal/src/GHC/Internal/Stack/Constants.hsc
- + libraries/ghc-internal/src/GHC/Internal/Stack/Decode.hs
- libraries/ghc-internal/src/GHC/Internal/System/IO.hs
- libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Lib.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Lift.hs
- + libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs
- libraries/ghc-internal/src/GHC/Internal/TH/Syntax.hs
- + libraries/ghc-internal/tests/Makefile
- + libraries/ghc-internal/tests/all.T
- + libraries/ghc-internal/tests/backtraces/Makefile
- + libraries/ghc-internal/tests/backtraces/T14532a.hs
- + libraries/ghc-internal/tests/backtraces/T14532a.stdout
- + libraries/ghc-internal/tests/backtraces/T14532b.hs
- + libraries/ghc-internal/tests/backtraces/T14532b.stdout
- + libraries/ghc-internal/tests/backtraces/all.T
- + libraries/ghc-internal/tests/stack-annotation/Makefile
- + libraries/ghc-internal/tests/stack-annotation/TestUtils.hs
- + libraries/ghc-internal/tests/stack-annotation/all.T
- + libraries/ghc-internal/tests/stack-annotation/ann_frame001.hs
- + libraries/ghc-internal/tests/stack-annotation/ann_frame001.stdout
- + libraries/ghc-internal/tests/stack-annotation/ann_frame002.hs
- + libraries/ghc-internal/tests/stack-annotation/ann_frame002.stdout
- + libraries/ghc-internal/tests/stack-annotation/ann_frame003.hs
- + libraries/ghc-internal/tests/stack-annotation/ann_frame003.stdout
- + libraries/ghc-internal/tests/stack-annotation/ann_frame004.hs
- + libraries/ghc-internal/tests/stack-annotation/ann_frame004.stdout
- libraries/ghc-prim/changelog.md
- libraries/ghci/GHCi/CreateBCO.hs
- libraries/ghci/GHCi/Debugger.hs
- libraries/ghci/GHCi/Message.hs
- libraries/ghci/GHCi/Run.hs
- libraries/ghci/GHCi/TH.hs
- libraries/ghci/ghci.cabal.in
- libraries/hpc
- libraries/template-haskell/Language/Haskell/TH/Lib.hs
- libraries/template-haskell/Language/Haskell/TH/Quote.hs
- libraries/template-haskell/Language/Haskell/TH/Syntax.hs
- libraries/template-haskell/changelog.md
- libraries/template-haskell/tests/all.T
- libraries/text
- libraries/time
- libraries/unix
- linters/lint-codes/LintCodes/Coverage.hs
- m4/find_python.m4
- m4/fp_find_libdw.m4
- − m4/fp_settings.m4
- m4/fp_setup_windows_toolchain.m4
- m4/ghc_toolchain.m4
- m4/prep_target_file.m4
- + m4/subst_tooldir.m4
- mk/hsc2hs.in
- rts/CloneStack.c
- rts/CloneStack.h
- rts/ClosureFlags.c
- + rts/ClosureTable.c
- + rts/ClosureTable.h
- rts/Disassembler.c
- rts/Exception.cmm
- rts/Hash.c
- rts/IOManager.c
- rts/IOManager.h
- rts/IOManagerInternals.h
- rts/IPE.c
- rts/Interpreter.c
- rts/LdvProfile.c
- rts/Messages.c
- rts/Prelude.h
- rts/PrimOps.cmm
- rts/Printer.c
- rts/ProfHeap.c
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The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/82ce317e8eda8f4dd8a1cb1835eb79…
--
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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FIXED] 38 commits: Use mkVirtHeapOffsets for reconstructing terms in RTTI
by Sven Tennie (＠supersven) 16 Sep '25
by Sven Tennie (＠supersven) 16 Sep '25
16 Sep '25
Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FIXED at Glasgow Haskell Compiler / GHC
Commits:
8f3d80ff by Luite Stegeman at 2025-09-13T08:43:09+02:00
Use mkVirtHeapOffsets for reconstructing terms in RTTI
This makes mkVirtHeapOffsets the single source of truth for
finding field offsets in closures.
- - - - -
eb389338 by Luite Stegeman at 2025-09-13T08:43:09+02:00
Sort non-pointer fields by size for more efficient packing
This sorts non-pointer fields in mkVirtHeapOffsets, always
storing the largest field first. The relative order of
equally sized fields remains unchanged.
This reduces wasted padding/alignment space in closures with
differently sized fields.
- - - - -
99b233f4 by Alison at 2025-09-13T16:51:04-04:00
ghc-heap: Fix race condition with profiling builds
Apply the same fix from Closures.hs (64fd0fac83) to Heap.hs by adding
empty imports to make way-dependent dependencies visible to `ghc -M`.
Fixes #15197, #26407
- - - - -
77deaa7a by Cheng Shao at 2025-09-14T21:29:45-04:00
hadrian: build in-tree gmp with -fvisibility=hidden
When hadrian builds in-tree gmp, it should build the shared objects
with -fvisibility=hidden. The gmp symbols are only used by bignum
logic in ghc-internal and shouldn't be exported by the ghc-internal
shared library. We should always strive to keep shared library symbol
table lean, which benefits platforms with slow dynamic linker or even
hard limits about how many symbols can be exported (e.g. macos dyld,
win32 dll and wasm dyld).
- - - - -
42a18960 by Cheng Shao at 2025-09-14T21:30:26-04:00
Revert "wasm: add brotli compression for ghci browser mode"
This reverts commit 731217ce68a1093b5f9e26a07d5bd2cdade2b352.
Benchmarks show non-negligible overhead when browser runs on the same
host, which is the majority of actual use cases.
- - - - -
e6755b9f by Cheng Shao at 2025-09-14T21:30:26-04:00
wasm: remove etag logic in ghci browser mode web server
This commit removes the etag logic in dyld script's ghci browser mode
web server. It was meant to support caching logic of wasm shared
libraries, but even if the port is manually specified to make caching
even relevant, for localhost the extra overhead around etag logic is
simply not worth it according to benchmarks.
- - - - -
6ba841ef by Matthew Pickering at 2025-09-16T09:07:44+00:00
Add missing req_interp modifier to T18441fail3 and T18441fail19
These tests require the interpreter but they were failing in a different
way with the javascript backend because the interpreter was disabled and
stderr is ignored by the test.
- - - - -
3f9decef by Matthew Pickering at 2025-09-16T09:07:44+00:00
Use explicit syntax rather than pure
- - - - -
535f44b3 by Matthew Pickering at 2025-09-16T09:07:44+00:00
packaging: correctly propagate build/host/target to bindist configure script
At the moment the host and target which we will produce a compiler for
is fixed at the initial configure time. Therefore we need to persist
the choice made at this time into the installation bindist as well so we
look for the right tools, with the right prefixes at install time.
In the future, we want to provide a bit more control about what kind of
bindist we produce so the logic about what the host/target will have to
be written by hadrian rather than persisted by the configure script. In
particular with cross compilers we want to either build a normal stage 2
cross bindist or a stage 3 bindist, which creates a bindist which has a
native compiler for the target platform.
Fixes #21970
- - - - -
dcb78b21 by Matthew Pickering at 2025-09-16T09:07:44+00:00
hadrian: Fill in more of the default.host toolchain file
When you are building a cross compiler this file will be used to build
stage1 and it's libraries, so we need enough information here to work
accurately. There is still more work to be done (see for example, word
size is still fixed).
- - - - -
c3ca6b53 by Matthew Pickering at 2025-09-16T09:07:44+00:00
hadrian: Disable docs when cross compiling
Before there were a variety of ad-hoc places where doc building was
disabled when cross compiling.
* Some CI jobs sets --docs=none in gen_ci.hs
* Some CI jobs set --docs=none in .gitlab/ci.sh
* There was some logic in hadrian to not need the ["docs"] target when
making a bindist.
Now the situation is simple:
* If you are cross compiling then defaultDocsTargets is empty by
default.
In theory, there is no reason why we can't build documentation for cross
compiler bindists, but this is left to future work to generalise the
documentation building rules to allow this (#24289)
- - - - -
facf4747 by Matthew Pickering at 2025-09-16T09:08:48+00:00
hadrian: Build stage 2 cross compilers
* Most of hadrian is abstracted over the stage in order to remove the
assumption that the target of all stages is the same platform. This
allows the RTS to be built for two different targets for example.
* Abstracts the bindist creation logic to allow building either normal
or cross bindists. Normal bindists use stage 1 libraries and a stage 2
compiler. Cross bindists use stage 2 libararies and a stage 2
compiler.
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
New hadrian target:
* `binary-dist-dir-cross`: Build a cross compiler bindist (compiler =
stage 1, libraries = stage 2)
-------------------------
Metric Decrease:
T10421a
T10858
T11195
T11276
T11374
T11822
T15630
T17096
T18478
T20261
Metric Increase:
parsing001
-------------------------
- - - - -
67f4d370 by Matthew Pickering at 2025-09-16T09:08:48+00:00
ci: Test cross bindists
We remove the special logic for testing in-tree cross
compilers and instead test cross compiler bindists, like we do for all
other platforms.
- - - - -
e83297e8 by Matthew Pickering at 2025-09-16T09:08:48+00:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
- - - - -
27cc14d0 by Matthew Pickering at 2025-09-16T09:08:48+00:00
ci: Introduce CROSS_STAGE variable
In preparation for building and testing stage3 bindists we introduce the
CROSS_STAGE variable which is used by a CI job to determine what kind of
bindist the CI job should produce.
At the moment we are only using CROSS_STAGE=2 but in the future we will
have some jobs which set CROSS_STAGE=3 to produce native bindists for a
target, but produced by a cross compiler, which can be tested on by
another CI job on the native platform.
CROSS_STAGE=2: Build a normal cross compiler bindist
CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target
- - - - -
d5722334 by Matthew Pickering at 2025-09-16T09:08:48+00:00
Split up system.config into host/target config files
There were a number of settings which were not applied per-stage, for
example if you specified `--ffi-include-dir` then that was applied to
both host and target. Now this will just be passed when building the
crosscompiler.
The solution for now is to separate these two files into host/target and
the host file contains very bare-bones . There isn't currently a way to
specify with configure anything in the host file, so if you are building
a cross-compiler and you need to do that, you have to modify the file
yourself.
- - - - -
9f11b1d7 by Matthew Pickering at 2025-09-16T09:08:48+00:00
wip fixup
- - - - -
cb22b2cb by Matthew Pickering at 2025-09-16T09:08:48+00:00
Fix location of emsdk-version
- - - - -
509cb65f by Matthew Pickering at 2025-09-16T09:08:48+00:00
fix distrib/configure file
- - - - -
f3c776d8 by Matthew Pickering at 2025-09-16T09:08:48+00:00
Fix hardcoded stage1
- - - - -
dc6a7fc5 by Matthew Pickering at 2025-09-16T09:08:48+00:00
Don't recache
- - - - -
8850b414 by Matthew Pickering at 2025-09-16T09:08:48+00:00
hadrian: Make text_simdutf flavour transformer configurable per-stage
Before it was globally enabled, which was probably not what you want as
you don't need text-simd for your boot compiler nor your boot compiler
if you're building a cross-compiler.
This brings it into line with the other modifiers.. such as ghcProfiled
etc
Fixes #25302
- - - - -
fed579a0 by Matthew Pickering at 2025-09-16T09:08:49+00:00
hadrian: Refactor system-cxx-std-lib rules0
I noticed a few things wrong with the hadrian rules for `system-cxx-std-lib` rules.
* For `text` there is an ad-hoc check to depend on `system-cxx-std-lib` outside of `configurePackage`.
* The `system-cxx-std-lib` dependency is not read from cabal files.
* Recache is not called on the packge database after the `.conf` file is generated, a more natural place for this rule is `registerRules`.
Treating this uniformly like other packages is complicated by it not having any source code or a cabal file. However we can do a bit better by reporting the dependency firstly in `PackageData` and then needing the `.conf` file in the same place as every other package in `configurePackage`.
Fixes #25303
- - - - -
fad01bdb by Matthew Pickering at 2025-09-16T09:08:49+00:00
fixes for simdutf8
- - - - -
802c36e3 by Matthew Pickering at 2025-09-16T09:08:49+00:00
use building for target in llvm flavour transformer
- - - - -
95dc780c by Matthew Pickering at 2025-09-16T09:08:49+00:00
bindist: Pass path to package database we want to recache
This fixes recaching on cross compilers
- - - - -
ee2a38b2 by Matthew Pickering at 2025-09-16T09:08:49+00:00
testsuite: T9930fail now passes on javascript
I didn't investigate why, but the comment says it should be fixed by
building a stage2 cross compiler (and it is).
- - - - -
00e38c75 by Matthew Pickering at 2025-09-16T09:08:49+00:00
hadrian: Fix predicate for building shared libraries in defaultLibraries
Obviously we should only attempt to build shared libraries if the target
supports building shared libraries.
- - - - -
918ca218 by Matthew Pickering at 2025-09-16T09:08:49+00:00
Hard-code ways in settings
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89e6741c by Sven Tennie at 2025-09-16T09:08:49+00:00
Fix ghcconfig lookup error
This seems to be the fix with least friction for the issue stated below.
Though, in the long run it might be better to rename `TargetARCH_CPP` to
`TargetARCH` (the `_CPP` suffix feels a bit odd.)
Fixed error:
```
Key 'TargetARCH' not found in file '_build/test/ghcconfig'
```
- - - - -
ba5dfb23 by Sven Tennie at 2025-09-16T09:08:49+00:00
target-has-libm -> use-lib-m
The flag was renamed.
- - - - -
3ea66f9b by Sven Tennie at 2025-09-16T09:08:49+00:00
Additional SIMD flags are required for the host
The files with specific SIMD flags are built for GHC's RTS (host), not
for the programs built by it (target.) This matters when
cross-compiling, because host and target differ then.
- - - - -
4b30b536 by Sven Tennie at 2025-09-16T09:08:49+00:00
Fix path stage segment to stage mapping in generated rules
- - - - -
00bf98ff by Sven Tennie at 2025-09-16T09:08:49+00:00
Cleanup: Delete unused binding
- - - - -
6e0e3087 by Sven Tennie at 2025-09-16T09:08:49+00:00
Cleanup unused imports
- - - - -
9ab61971 by Sven Tennie at 2025-09-16T09:08:49+00:00
Fix out-of-tree TestCompilerArgs parsing: WORDSIZE
TestWORDSIZE is in bits, not bytes.
- - - - -
7099c9bf by Sven Tennie at 2025-09-16T09:08:49+00:00
TestCompilerArgs: Fix arch (out of tree)
- - - - -
dfd48223 by Sven Tennie at 2025-09-16T09:08:49+00:00
Calculate "RTS ways"
The static string doesn't reflect what GHC provides in tests.
- - - - -
75 changed files:
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/StgToCmm/Layout.hs
- configure.ac
- distrib/configure.ac.in
- hadrian/README.md
- hadrian/bindist/config.mk.in
- hadrian/cfg/default.host.target.in
- + hadrian/cfg/system.config.host.in
- hadrian/cfg/system.config.in
- + hadrian/cfg/system.config.target.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- + hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/Context.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Expression.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Oracles/TextFile.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Flavour.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/Libffi.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Builders/SplitSections.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Benchmark.hs
- hadrian/src/Settings/Flavours/Development.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/Quick.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Quickest.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Settings/Warnings.hs
- libraries/ghc-heap/GHC/Exts/Heap.hs
- m4/fp_find_nm.m4
- m4/fptools_set_platform_vars.m4
- m4/prep_target_file.m4
- testsuite/ghc-config/ghc-config.hs
- testsuite/tests/codeGen/should_run/T13825-unit.hs
- testsuite/tests/ghc-e/should_fail/all.T
- testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout
- testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout-ws-32
- utils/jsffi/dyld.mjs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a5449ca95261320942a983e007ec5e…
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[Git][ghc/ghc][wip/9.12.3-backports] 6 commits: haddock: Preserve indentation in multiline examples
by Zubin (＠wz1000) 16 Sep '25
by Zubin (＠wz1000) 16 Sep '25
16 Sep '25
Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC
Commits:
266d0649 by Ryan Hendrickson at 2025-09-16T14:41:06+05:30
haddock: Preserve indentation in multiline examples
Intended for use with :{ :}, but doesn't look for those characters. Any
consecutive lines with birdtracks will only have initial whitespace
stripped up to the column of the first line.
(cherry picked from commit 75cadf816544408f65d3baeec8092a7356d4b720)
- - - - -
d52b0a9c by Ryan Hendrickson at 2025-09-16T14:41:06+05:30
haddock: Fix links to type operators
(cherry picked from commit a0adc30d892f14f543f39d5c45faccacbc28afb4)
- - - - -
606822f0 by Ryan Hendrickson at 2025-09-16T14:41:06+05:30
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).
(cherry picked from commit 6558467c0e3a9b97141ec9f0cdbadf3550c5cd3c)
- - - - -
b072547d by Ryan Hendrickson at 2025-09-16T14:41:06+05:30
haddock: Document instances from other packages
When attaching instances to `Interface`s, it isn't enough just to look
for instances in the list of `Interface`s being processed. We also need
to look in the modules on which they depend, including those outside of
this package.
Fixes #25147.
Fixes #26079.
(cherry picked from commit a26243fde4680271712a3d774e17f6cd6da4a652)
- - - - -
b8a0bddc by Zubin Duggal at 2025-09-16T14:41:06+05:30
haddock: Don't warn about missing link destinations for derived names.
Fixes #26114
(cherry picked from commit 5dabc718a04bfc4d277c5ff7f815ee3d6b9670cb)
- - - - -
0337f4ec by Zubin Duggal at 2025-09-16T14:41:06+05:30
Prepare 9.12.3
- - - - -
21 changed files:
- configure.ac
- docs/users_guide/9.12.3-notes.rst
- testsuite/driver/testlib.py
- testsuite/tests/haddock/haddock_testsuite/Makefile
- + testsuite/tests/haddock/haddock_testsuite/T26114.hs
- + testsuite/tests/haddock/haddock_testsuite/T26114.stdout
- testsuite/tests/haddock/haddock_testsuite/all.T
- testsuite/tests/polykinds/T14172.stderr
- utils/haddock/CHANGES.md
- utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Create.hs
- utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
- utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
- utils/haddock/haddock-library/test/Documentation/Haddock/ParserSpec.hs
- utils/haddock/haddock-test/src/Test/Haddock/Config.hs
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/PatternSyns.html
- utils/haddock/html-test/ref/TypeOperators.html
- utils/haddock/html-test/src/TypeOperators.hs
Changes:
=====================================
configure.ac
=====================================
@@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12.2], [glasgow-ha
AC_CONFIG_MACRO_DIRS([m4])
# Set this to YES for a released version, otherwise NO
-: ${RELEASE=YES}
+: ${RELEASE=NO}
# The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line
# above. If this is not a released version, then we will append the
=====================================
docs/users_guide/9.12.3-notes.rst
=====================================
@@ -13,6 +13,83 @@ Compiler
- Fixed re-exports of ``MkSolo`` and ``MkSolo#`` (:ghc-ticket:`25182`)
- Fixed the behavior of ``Language.Haskell.TH.mkName "FUN"`` (:ghc-ticket:`25174`)
+- Fixed miscompilation involving ``zonkEqTypes`` on ``AppTy/AppTy`` (:ghc-ticket:`26256`)
+- Fixed CprAnal to detect recursive newtypes (:ghc-ticket:`25944`)
+- Fixed specialisation of incoherent instances (:ghc-ticket:`25883`)
+- Fixed bytecode generation for ``tagToEnum# <LITERAL>`` (:ghc-ticket:`25975`)
+- Fixed panic with EmptyCase and RequiredTypeArguments (:ghc-ticket:`25004`)
+- Fixed ``tyConStupidTheta`` to handle ``PromotedDataCon`` (:ghc-ticket:`25739`)
+- Fixed unused import warnings for duplicate record fields (:ghc-ticket:`24035`)
+- Fixed lexing of ``"\^\"`` (:ghc-ticket:`25937`)
+- Fixed string gap collapsing (:ghc-ticket:`25784`)
+- Fixed lexing of comments in multiline strings (:ghc-ticket:`25609`)
+- Made unexpected LLVM versions a warning rather than an error (:ghc-ticket:`25915`)
+- Disabled ``-fprof-late-overloaded-calls`` for join points to avoid invalid transformations
+- Fixed bugs in ``integerRecipMod`` and ``integerPowMod`` (:ghc-ticket:`26017`)
+- Fixed ``naturalAndNot`` for NB/NS case (:ghc-ticket:`26230`)
+- Fixed ``ds_ev_typeable`` to use ``mkTrAppChecked`` (:ghc-ticket:`25998`)
+- Fixed GHC settings to always unescape escaped spaces (:ghc-ticket:`25204`)
+- Fixed issue with HasCallStack constraint caching (:ghc-ticket:`25529`)
+- Fixed archive member size writing logic in ``GHC.SysTools.Ar`` (:ghc-ticket:`26120`, :ghc-ticket:`22586`)
+
+Runtime System
+~~~~~~~~~~~~~~
+
+- Fixed ``MessageBlackHole.link`` to always be a valid closure
+- Fixed handling of WHITEHOLE in ``messageBlackHole`` (:ghc-ticket:`26205`)
+- Fixed ``rts_clearMemory`` logic when sanity checks are enabled (:ghc-ticket:`26011`)
+- Fixed underflow frame lookups in the bytecode interpreter (:ghc-ticket:`25750`)
+- Fixed overflows and reentrancy in interpreter statistics calculation (:ghc-ticket:`25756`)
+- Fixed INTERP_STATS profiling code (:ghc-ticket:`25695`)
+- Removed problematic ``n_free`` variable from nonmovingGC (:ghc-ticket:`26186`)
+- Fixed incorrect format specifiers in era profiling
+- Improved documentation of SLIDE and PACK bytecode instructions
+- Eliminated redundant ``SLIDE x 0`` bytecode instructions
+- Fixed compile issues on powerpc64 ELF v1
+
+Code Generation
+~~~~~~~~~~~~~~~
+
+- Fixed LLVM built-in variable predicate (was checking ``$llvm`` instead of ``@llvm``)
+- Fixed linkage of built-in arrays for LLVM (:ghc-ticket:`25769`)
+- Fixed code generation for SSE vector operations (:ghc-ticket:`25859`)
+- Fixed ``bswap64`` code generation on i386 (:ghc-ticket:`25601`)
+- Fixed sub-word arithmetic right shift on AArch64 (:ghc-ticket:`26061`)
+- Fixed LLVM vector literal emission to include type information
+- Fixed LLVM version detection
+- Fixed typo in ``padLiveArgs`` that caused segfaults (:ghc-ticket:`25770`, :ghc-ticket:`25773`)
+- Fixed constant-folding for Word->Float bitcasts
+- Added surface syntax for Word/Float bitcast operations
+- Fixed ``MOVD`` format in x86 NCG for ``unpackInt64X2#``
+- Added ``-finter-module-far-jumps`` flag for AArch64
+- Fixed RV64 J instruction handling for non-local jumps (:ghc-ticket:`25738`)
+- Reapplied division by constants optimization
+- Fixed TNTC to set CmmProc entry_label properly (:ghc-ticket:`25565`)
+
+Linker
+~~~~~~
+
+- Improved efficiency of proddable blocks structure (:ghc-ticket:`26009`)
+- Fixed Windows DLL loading to avoid redundant ``LoadLibraryEx`` calls (:ghc-ticket:`26009`)
+- Fixed incorrect use of ``break`` in nested for loop (:ghc-ticket:`26052`)
+- Fixed linker to not fail due to ``RTLD_NOW`` (:ghc-ticket:`25943`)
+- Dropped obsolete Windows XP compatibility checks
+
+GHCi
+~~~~
+
+- Fixed ``mkTopLevEnv`` to use ``loadInterfaceForModule`` instead of ``loadSrcInterface`` (:ghc-ticket:`25951`)
+
+Template Haskell
+~~~~~~~~~~~~~~~~
+
+- Added explicit export lists to all remaining template-haskell modules
+
+Build system
+~~~~~~~~~~~~~~~~
+
+- Exposed all of Backtraces' internals for ghc-internal (:ghc-ticket:`26049`)
+- Fixed cross-compilation configuration override (:ghc-ticket:`26236`)
Included libraries
~~~~~~~~~~~~~~~~~~
=====================================
testsuite/driver/testlib.py
=====================================
@@ -1725,7 +1725,7 @@ async def do_test(name: TestName,
dst_makefile = in_testdir('Makefile')
if src_makefile.exists():
makefile = src_makefile.read_text(encoding='UTF-8')
- makefile = re.sub('TOP=.*', 'TOP=%s' % config.top, makefile, 1)
+ makefile = re.sub('TOP=.*', 'TOP=%s' % config.top, makefile, count=1)
dst_makefile.write_text(makefile, encoding='UTF-8')
if opts.pre_cmd:
=====================================
testsuite/tests/haddock/haddock_testsuite/Makefile
=====================================
@@ -76,3 +76,7 @@ hypsrcTest:
.PHONY: haddockForeignTest
haddockForeignTest:
'$(HADDOCK)' A.hs B.hs F.hs arith.c
+
+.PHONY: T26114
+T26114:
+ '$(HADDOCK)' T26114.hs
=====================================
testsuite/tests/haddock/haddock_testsuite/T26114.hs
=====================================
@@ -0,0 +1,23 @@
+{-# LANGUAGE TypeFamilies #-}
+
+-- | Module
+module T26114 where
+
+-- | C1
+class C1 t where
+ type C2 t
+
+-- | A
+data A = A
+
+instance C1 A where
+ type C2 A = B
+
+-- | B
+data B = B
+
+instance C1 B where
+ type C2 B = C
+
+-- | C
+data C = C
=====================================
testsuite/tests/haddock/haddock_testsuite/T26114.stdout
=====================================
@@ -0,0 +1,3 @@
+[1 of 1] Compiling T26114 ( T26114.hs, nothing )
+Haddock coverage:
+ 100% ( 5 / 5) in 'T26114'
=====================================
testsuite/tests/haddock/haddock_testsuite/all.T
=====================================
@@ -24,3 +24,8 @@ test('haddockForeignTest',
[ignore_stdout, ignore_stderr, req_haddock, extra_files(['./haddock-th-foreign-repro/A.hs', './haddock-th-foreign-repro/B.hs', './haddock-th-foreign-repro/F.hs', './haddock-th-foreign-repro/arith.c'])],
makefile_test,
['haddockForeignTest'])
+
+test('T26114',
+ [ignore_stderr, req_haddock, extra_files(['T26114.hs'])],
+ makefile_test,
+ ['T26114'])
=====================================
testsuite/tests/polykinds/T14172.stderr
=====================================
@@ -1,6 +1,6 @@
T14172.hs:7:46: error: [GHC-88464]
- • Found type wildcard ‘_’ standing for ‘a'1 :: k0’
- Where: ‘k0’ is an ambiguous type variable
+ • Found type wildcard ‘_’ standing for ‘a'1 :: k30’
+ Where: ‘k30’ is an ambiguous type variable
‘a'1’ is an ambiguous type variable
To use the inferred type, enable PartialTypeSignatures
• In the first argument of ‘h’, namely ‘_’
=====================================
utils/haddock/CHANGES.md
=====================================
@@ -1,6 +1,8 @@
## Changes in 2.32.0
* Add highlighting for inline-code-blocks (sections enclosed in @'s)
+ * Fix missing documentation for orphan instances from other packages.
+
* Add incremental mode to support rendering documentation one module at a time.
* The flag `--no-compilation` has been added. This flag causes Haddock to avoid
=====================================
utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
=====================================
@@ -93,7 +93,10 @@ attachInstances expInfo ifaces instIfaceMap isOneShot = do
, fromOrig == Just True || not (null reExp)
]
mods_to_load = moduleSetElts mods
- mods_visible = mkModuleSet $ map ifaceMod ifaces
+ -- We need to ensure orphans in modules outside of this package are included.
+ -- See https://gitlab.haskell.org/ghc/ghc/-/issues/25147
+ -- and https://gitlab.haskell.org/ghc/ghc/-/issues/26079
+ mods_visible = mkModuleSet $ concatMap (liftA2 (:) ifaceMod ifaceOrphanDeps) ifaces
(_msgs, mb_index) <- do
hsc_env <- getSession
=====================================
utils/haddock/haddock-api/src/Haddock/Interface/Create.hs
=====================================
@@ -59,6 +59,7 @@ import GHC.Types.Name.Set
import GHC.Types.SafeHaskell
import qualified GHC.Types.SrcLoc as SrcLoc
import qualified GHC.Types.Unique.Map as UniqMap
+import GHC.Unit.Module.Deps (dep_orphs)
import GHC.Unit.Module.ModIface
import GHC.Unit.State (PackageName (..), UnitState)
import GHC.Utils.Outputable (SDocContext)
@@ -270,6 +271,7 @@ createInterface1' flags unit_state dflags hie_file mod_iface ifaces inst_ifaces
, ifaceVisibleExports = visible_names
, ifaceFixMap = fixities
, ifaceInstances = instances
+ , ifaceOrphanDeps = dep_orphs $ mi_deps mod_iface
, ifaceOrphanInstances = [] -- Filled in attachInstances
, ifaceRnOrphanInstances = [] -- Filled in renameInterfaceRn
, ifaceHaddockCoverage = coverage
=====================================
utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs
=====================================
@@ -155,6 +155,7 @@ rename sDocContext renamer = rn
| otherwise = isTermVarOrFieldNameSpace
typeNsChoices
| isDataOcc occ = isTcClsNameSpace
+ | isSymOcc occ = isTcClsNameSpace
| otherwise = isTvNameSpace
-- Generate the choices for the possible kind of thing this
-- is. We narrow down the possibilities with the namespace (if
=====================================
utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
=====================================
@@ -104,6 +104,7 @@ renameInterface dflags ignoreSet renamingEnv warnings hoogle iface = do
&& isExternalName name
&& not (isBuiltInSyntax name)
&& not (isTyVarName name)
+ && not (isDerivedOccName $ nameOccName name)
&& Exact name /= eqTyCon_RDR
-- Must not be in the set of ignored symbols for the module or the
-- unqualified ignored symbols
=====================================
utils/haddock/haddock-api/src/Haddock/Types.hs
=====================================
@@ -131,6 +131,9 @@ data Interface = Interface
-- Names from modules that are entirely re-exported don't count as visible.
, ifaceInstances :: [ClsInst]
-- ^ Instances exported by the module.
+ , ifaceOrphanDeps :: [Module]
+ -- ^ The list of modules to check for orphan instances if this module is
+ -- imported.
, ifaceOrphanInstances :: [DocInstance GhcRn]
-- ^ Orphan instances
, ifaceRnOrphanInstances :: [DocInstance DocNameI]
=====================================
utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
=====================================
@@ -1,3 +1,4 @@
+{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ViewPatterns #-}
@@ -28,6 +29,7 @@ import Control.Applicative
import Control.Arrow (first)
import Control.Monad
import Data.Char (chr, isAlpha, isSpace, isUpper)
+import Data.Functor (($>))
import Data.List (elemIndex, intercalate, intersperse, unfoldr)
import Data.Maybe (fromMaybe, mapMaybe)
import Data.Monoid
@@ -186,11 +188,29 @@ specialChar = "_/<@\"&'`#[ "
-- to ensure that we have already given a chance to more meaningful parsers
-- before capturing their characters.
string' :: Parser (DocH mod a)
-string' = DocString . unescape . T.unpack <$> takeWhile1_ (`notElem` specialChar)
+string' =
+ DocString
+ <$> ((:) <$> rawOrEscChar "" <*> many (rawOrEscChar "(["))
+ -- After the first character, stop for @\(@ or @\[@ math starters. (The
+ -- first character won't start a valid math string because this parser
+ -- should follow math parsers. But this parser is expected to accept at
+ -- least one character from all inputs that don't start with special
+ -- characters, so the first character parser can't have the @"(["@
+ -- restriction.)
where
- unescape "" = ""
- unescape ('\\' : x : xs) = x : unescape xs
- unescape (x : xs) = x : unescape xs
+ -- | Parse a single logical character, either raw or escaped. Don't accept
+ -- escaped characters from the argument string.
+ rawOrEscChar :: [Char] -> Parser Char
+ rawOrEscChar restrictedEscapes = try $ Parsec.noneOf specialChar >>= \case
+ -- Handle backslashes:
+ -- - Fail on forbidden escape characters.
+ -- - Non-forbidden characters: simply unescape, e.g. parse "\b" as 'b',
+ -- - Trailing backslash: treat it as a raw backslash, not an escape
+ -- sequence. (This is the logic that this parser followed when this
+ -- comment was written; it is not necessarily intentional but now I
+ -- don't want to break anything relying on it.)
+ '\\' -> Parsec.noneOf restrictedEscapes <|> Parsec.eof $> '\\'
+ c -> pure c
-- | Skips a single special character and treats it as a plain string.
-- This is done to skip over any special characters belonging to other
@@ -795,31 +815,33 @@ stripSpace = fromMaybe <*> mapM strip'
-- | Parses examples. Examples are a paragraph level entity (separated by an empty line).
-- Consecutive examples are accepted.
examples :: Parser (DocH mod a)
-examples = DocExamples <$> (many (try (skipHorizontalSpace *> "\n")) *> go)
+examples = DocExamples <$> (many (try (skipHorizontalSpace *> "\n")) *> go Nothing)
where
- go :: Parser [Example]
- go = do
+ go :: Maybe Text -> Parser [Example]
+ go mbInitialIndent = do
prefix <- takeHorizontalSpace <* ">>>"
+ initialIndent <- maybe takeHorizontalSpace pure mbInitialIndent
expr <- takeLine
- (rs, es) <- resultAndMoreExamples
- return (makeExample prefix expr rs : es)
+ (rs, es) <- resultAndMoreExamples (Just initialIndent)
+ return (makeExample prefix initialIndent expr rs : es)
+
+ resultAndMoreExamples :: Maybe Text -> Parser ([Text], [Example])
+ resultAndMoreExamples mbInitialIndent = choice' [moreExamples, result, pure ([], [])]
where
- resultAndMoreExamples :: Parser ([Text], [Example])
- resultAndMoreExamples = choice' [moreExamples, result, pure ([], [])]
- where
- moreExamples :: Parser ([Text], [Example])
- moreExamples = (,) [] <$> go
+ moreExamples :: Parser ([Text], [Example])
+ moreExamples = (,) [] <$> go mbInitialIndent
- result :: Parser ([Text], [Example])
- result = first . (:) <$> nonEmptyLine <*> resultAndMoreExamples
+ result :: Parser ([Text], [Example])
+ result = first . (:) <$> nonEmptyLine <*> resultAndMoreExamples Nothing
- makeExample :: Text -> Text -> [Text] -> Example
- makeExample prefix expression res =
- Example (T.unpack (T.strip expression)) result
+ makeExample :: Text -> Text -> Text -> [Text] -> Example
+ makeExample prefix indent expression res =
+ Example (T.unpack (tryStripIndent (T.stripEnd expression))) result
where
result = map (T.unpack . substituteBlankLine . tryStripPrefix) res
tryStripPrefix xs = fromMaybe xs (T.stripPrefix prefix xs)
+ tryStripIndent = liftA2 fromMaybe T.stripStart (T.stripPrefix indent)
substituteBlankLine "<BLANKLINE>" = ""
substituteBlankLine xs = xs
=====================================
utils/haddock/haddock-library/test/Documentation/Haddock/ParserSpec.hs
=====================================
@@ -284,6 +284,13 @@ spec = do
it "supports title for deprecated picture syntax" $ do
"<<b a z>>" `shouldParseTo` image "b" "a z"
+ context "when parsing inline math" $ do
+ it "accepts inline math immediately after punctuation" $ do
+ "(\\(1 + 2 = 3\\) is an example of addition)"
+ `shouldParseTo` "("
+ <> DocMathInline "1 + 2 = 3"
+ <> " is an example of addition)"
+
context "when parsing display math" $ do
it "accepts markdown syntax for display math containing newlines" $ do
"\\[\\pi\n\\pi\\]" `shouldParseTo` DocMathDisplay "\\pi\n\\pi"
@@ -864,6 +871,29 @@ spec = do
it "accepts unicode in examples" $ do
">>> 灼眼\nシャナ" `shouldParseTo` DocExamples [Example "灼眼" ["シャナ"]]
+ it "preserves indentation in consecutive example lines" $ do
+ unlines
+ [ ">>> line 1"
+ , ">>> line 2"
+ , ">>> line 3"
+ ]
+ `shouldParseTo` DocExamples
+ [ Example "line 1" []
+ , Example " line 2" []
+ , Example "line 3" []
+ ]
+
+ it "resets indentation after results" $ do
+ unlines
+ [ ">>> line 1"
+ , "result"
+ , ">>> line 2"
+ ]
+ `shouldParseTo` DocExamples
+ [ Example "line 1" ["result"]
+ , Example "line 2" []
+ ]
+
context "when prompt is prefixed by whitespace" $ do
it "strips the exact same amount of whitespace from result lines" $ do
unlines
=====================================
utils/haddock/haddock-test/src/Test/Haddock/Config.hs
=====================================
@@ -262,6 +262,7 @@ baseDependencies ghcPath = do
pkgs =
[ "array"
, "base"
+ , "deepseq"
, "ghc-prim"
, "process"
, "template-haskell"
=====================================
utils/haddock/html-test/ref/Bug1004.html
=====================================
@@ -797,7 +797,61 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Alternative:8"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:NFData1:8"
+ ></span
+ > <span class="breakable"
+ >(<span class="unbreakable"
+ ><a href="#" title="Control.DeepSeq"
+ >NFData1</a
+ > f</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Control.DeepSeq"
+ >NFData1</a
+ > g</span
+ >)</span
+ > => <a href="#" title="Control.DeepSeq"
+ >NFData1</a
+ > (<a href="#" title="Bug1004"
+ >Product</a
+ > f g)</span
+ > <a href="#" class="selflink"
+ >#</a
+ ></td
+ ><td class="doc"
+ ><p
+ ><em
+ >Since: deepseq-1.4.3.0</em
+ ></p
+ ></td
+ ></tr
+ ><tr
+ ><td colspan="2"
+ ><details id="i:id:Product:NFData1:8"
+ ><summary class="hide-when-js-enabled"
+ >Instance details</summary
+ ><p
+ >Defined in <a href="#"
+ >Control.DeepSeq</a
+ ></p
+ > <div class="subs methods"
+ ><p class="caption"
+ >Methods</p
+ ><p class="src"
+ ><a href="#"
+ >liftRnf</a
+ > :: (a -> ()) -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> () <a href="#" class="selflink"
+ >#</a
+ ></p
+ ></div
+ ></details
+ ></td
+ ></tr
+ ><tr
+ ><td class="src clearfix"
+ ><span class="inst-left"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Alternative:9"
></span
> (<a href="#" title="Control.Applicative"
>Alternative</a
@@ -820,7 +874,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Alternative:8"
+ ><details id="i:id:Product:Alternative:9"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -877,7 +931,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Applicative:9"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Applicative:10"
></span
> (<a href="#" title="Control.Applicative"
>Applicative</a
@@ -900,7 +954,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Applicative:9"
+ ><details id="i:id:Product:Applicative:10"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -973,7 +1027,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Functor:10"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Functor:11"
></span
> (<a href="#" title="Control.Monad"
>Functor</a
@@ -996,7 +1050,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Functor:10"
+ ><details id="i:id:Product:Functor:11"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1033,7 +1087,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Monad:11"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Monad:12"
></span
> (<a href="#" title="Control.Monad"
>Monad</a
@@ -1056,7 +1110,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Monad:11"
+ ><details id="i:id:Product:Monad:12"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1105,7 +1159,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadPlus:12"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadPlus:13"
></span
> (<a href="#" title="Control.Monad"
>MonadPlus</a
@@ -1128,7 +1182,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:MonadPlus:12"
+ ><details id="i:id:Product:MonadPlus:13"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1165,7 +1219,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadFix:13"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadFix:14"
></span
> (<a href="#" title="Control.Monad.Fix"
>MonadFix</a
@@ -1188,7 +1242,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:MonadFix:13"
+ ><details id="i:id:Product:MonadFix:14"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1215,7 +1269,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadZip:14"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:MonadZip:15"
></span
> (<a href="#" title="Control.Monad.Zip"
>MonadZip</a
@@ -1238,7 +1292,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:MonadZip:14"
+ ><details id="i:id:Product:MonadZip:15"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1291,7 +1345,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Foldable:15"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Foldable:16"
></span
> (<a href="#" title="Data.Foldable"
>Foldable</a
@@ -1314,7 +1368,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Foldable:15"
+ ><details id="i:id:Product:Foldable:16"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1489,7 +1543,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Traversable:16"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Traversable:17"
></span
> (<a href="#" title="Data.Traversable"
>Traversable</a
@@ -1512,7 +1566,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Traversable:16"
+ ><details id="i:id:Product:Traversable:17"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1577,7 +1631,65 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Monoid:17"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:NFData:18"
+ ></span
+ > <span class="breakable"
+ >(<span class="unbreakable"
+ ><a href="#" title="Control.DeepSeq"
+ >NFData</a
+ > (f a)</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Control.DeepSeq"
+ >NFData</a
+ > (g a)</span
+ >)</span
+ > => <a href="#" title="Control.DeepSeq"
+ >NFData</a
+ > (<a href="#" title="Bug1004"
+ >Product</a
+ > f g a)</span
+ > <a href="#" class="selflink"
+ >#</a
+ ></td
+ ><td class="doc"
+ ><p
+ >Note: in <code class="inline-code"
+ >deepseq-1.5.0.0</code
+ > this instance's superclasses were changed.</p
+ ><p
+ ><em
+ >Since: deepseq-1.4.3.0</em
+ ></p
+ ></td
+ ></tr
+ ><tr
+ ><td colspan="2"
+ ><details id="i:id:Product:NFData:18"
+ ><summary class="hide-when-js-enabled"
+ >Instance details</summary
+ ><p
+ >Defined in <a href="#"
+ >Control.DeepSeq</a
+ ></p
+ > <div class="subs methods"
+ ><p class="caption"
+ >Methods</p
+ ><p class="src"
+ ><a href="#"
+ >rnf</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> () <a href="#" class="selflink"
+ >#</a
+ ></p
+ ></div
+ ></details
+ ></td
+ ></tr
+ ><tr
+ ><td class="src clearfix"
+ ><span class="inst-left"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Monoid:19"
></span
> (<a href="#" title="Data.Monoid"
>Monoid</a
@@ -1600,7 +1712,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Monoid:17"
+ ><details id="i:id:Product:Monoid:19"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1647,7 +1759,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Semigroup:18"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Semigroup:20"
></span
> (<a href="#" title="Prelude"
>Semigroup</a
@@ -1670,7 +1782,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Semigroup:18"
+ ><details id="i:id:Product:Semigroup:20"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1723,21 +1835,235 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Data:19"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Eq:21"
></span
- > (<a href="#" title="Data.Dynamic"
- >Typeable</a
- > a, <a href="#" title="Data.Dynamic"
- >Typeable</a
- > f, <a href="#" title="Data.Dynamic"
- >Typeable</a
- > g, <a href="#" title="Data.Dynamic"
- >Typeable</a
- > k, <a href="#" title="Data.Data"
- >Data</a
- > (f a), <a href="#" title="Data.Data"
- >Data</a
- > (g a)) => <a href="#" title="Data.Data"
+ > <span class="breakable"
+ >(<span class="unbreakable"
+ ><a href="#" title="Data.Eq"
+ >Eq</a
+ > (f a)</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Eq"
+ >Eq</a
+ > (g a)</span
+ >)</span
+ > => <a href="#" title="Data.Eq"
+ >Eq</a
+ > (<a href="#" title="Bug1004"
+ >Product</a
+ > f g a)</span
+ > <a href="#" class="selflink"
+ >#</a
+ ></td
+ ><td class="doc"
+ ><p
+ ><em
+ >Since: base-4.18.0.0</em
+ ></p
+ ></td
+ ></tr
+ ><tr
+ ><td colspan="2"
+ ><details id="i:id:Product:Eq:21"
+ ><summary class="hide-when-js-enabled"
+ >Instance details</summary
+ ><p
+ >Defined in <a href="#"
+ >Data.Functor.Product</a
+ ></p
+ > <div class="subs methods"
+ ><p class="caption"
+ >Methods</p
+ ><p class="src"
+ ><a href="#"
+ >(==)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >(/=)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ></div
+ ></details
+ ></td
+ ></tr
+ ><tr
+ ><td class="src clearfix"
+ ><span class="inst-left"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Ord:22"
+ ></span
+ > <span class="breakable"
+ >(<span class="unbreakable"
+ ><a href="#" title="Data.Ord"
+ >Ord</a
+ > (f a)</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Ord"
+ >Ord</a
+ > (g a)</span
+ >)</span
+ > => <a href="#" title="Data.Ord"
+ >Ord</a
+ > (<a href="#" title="Bug1004"
+ >Product</a
+ > f g a)</span
+ > <a href="#" class="selflink"
+ >#</a
+ ></td
+ ><td class="doc"
+ ><p
+ ><em
+ >Since: base-4.18.0.0</em
+ ></p
+ ></td
+ ></tr
+ ><tr
+ ><td colspan="2"
+ ><details id="i:id:Product:Ord:22"
+ ><summary class="hide-when-js-enabled"
+ >Instance details</summary
+ ><p
+ >Defined in <a href="#"
+ >Data.Functor.Product</a
+ ></p
+ > <div class="subs methods"
+ ><p class="caption"
+ >Methods</p
+ ><p class="src"
+ ><a href="#"
+ >compare</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Ord"
+ >Ordering</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >(<)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >(<=)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >(>)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >(>=)</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Data.Bool"
+ >Bool</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >max</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a <a href="#" class="selflink"
+ >#</a
+ ></p
+ ><p class="src"
+ ><a href="#"
+ >min</a
+ > :: <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a -> <a href="#" title="Bug1004"
+ >Product</a
+ > f g a <a href="#" class="selflink"
+ >#</a
+ ></p
+ ></div
+ ></details
+ ></td
+ ></tr
+ ><tr
+ ><td class="src clearfix"
+ ><span class="inst-left"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Data:23"
+ ></span
+ > <span class="breakable"
+ >(<span class="unbreakable"
+ ><a href="#" title="Data.Dynamic"
+ >Typeable</a
+ > a</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Dynamic"
+ >Typeable</a
+ > f</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Dynamic"
+ >Typeable</a
+ > g</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Dynamic"
+ >Typeable</a
+ > k</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Data"
+ >Data</a
+ > (f a)</span
+ >, <span class="unbreakable"
+ ><a href="#" title="Data.Data"
+ >Data</a
+ > (g a)</span
+ >)</span
+ > => <a href="#" title="Data.Data"
>Data</a
> (<a href="#" title="Bug1004"
>Product</a
@@ -1754,7 +2080,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Data:19"
+ ><details id="i:id:Product:Data:23"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -1971,7 +2297,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Generic:20"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Generic:24"
></span
> <a href="#" title="GHC.Generics"
>Generic</a
@@ -1986,7 +2312,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Generic:20"
+ ><details id="i:id:Product:Generic:24"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -2125,7 +2451,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Read:21"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Read:25"
></span
> (<a href="#" title="Prelude"
>Read</a
@@ -2148,7 +2474,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Read:21"
+ ><details id="i:id:Product:Read:25"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -2207,7 +2533,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Show:22"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Show:26"
></span
> (<a href="#" title="Prelude"
>Show</a
@@ -2230,7 +2556,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Show:22"
+ ><details id="i:id:Product:Show:26"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -2279,195 +2605,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Eq:23"
- ></span
- > (<a href="#" title="Data.Eq"
- >Eq</a
- > (f a), <a href="#" title="Data.Eq"
- >Eq</a
- > (g a)) => <a href="#" title="Data.Eq"
- >Eq</a
- > (<a href="#" title="Bug1004"
- >Product</a
- > f g a)</span
- > <a href="#" class="selflink"
- >#</a
- ></td
- ><td class="doc"
- ><p
- ><em
- >Since: base-4.18.0.0</em
- ></p
- ></td
- ></tr
- ><tr
- ><td colspan="2"
- ><details id="i:id:Product:Eq:23"
- ><summary class="hide-when-js-enabled"
- >Instance details</summary
- ><p
- >Defined in <a href="#"
- >Data.Functor.Product</a
- ></p
- > <div class="subs methods"
- ><p class="caption"
- >Methods</p
- ><p class="src"
- ><a href="#"
- >(==)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >(/=)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ></div
- ></details
- ></td
- ></tr
- ><tr
- ><td class="src clearfix"
- ><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Ord:24"
- ></span
- > (<a href="#" title="Data.Ord"
- >Ord</a
- > (f a), <a href="#" title="Data.Ord"
- >Ord</a
- > (g a)) => <a href="#" title="Data.Ord"
- >Ord</a
- > (<a href="#" title="Bug1004"
- >Product</a
- > f g a)</span
- > <a href="#" class="selflink"
- >#</a
- ></td
- ><td class="doc"
- ><p
- ><em
- >Since: base-4.18.0.0</em
- ></p
- ></td
- ></tr
- ><tr
- ><td colspan="2"
- ><details id="i:id:Product:Ord:24"
- ><summary class="hide-when-js-enabled"
- >Instance details</summary
- ><p
- >Defined in <a href="#"
- >Data.Functor.Product</a
- ></p
- > <div class="subs methods"
- ><p class="caption"
- >Methods</p
- ><p class="src"
- ><a href="#"
- >compare</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Ord"
- >Ordering</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >(<)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >(<=)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >(>)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >(>=)</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Data.Bool"
- >Bool</a
- > <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >max</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a <a href="#" class="selflink"
- >#</a
- ></p
- ><p class="src"
- ><a href="#"
- >min</a
- > :: <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a -> <a href="#" title="Bug1004"
- >Product</a
- > f g a <a href="#" class="selflink"
- >#</a
- ></p
- ></div
- ></details
- ></td
- ></tr
- ><tr
- ><td class="src clearfix"
- ><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Rep1:25"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Rep1:27"
></span
> <span class="keyword"
>type</span
@@ -2490,7 +2628,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Rep1:25"
+ ><details id="i:id:Product:Rep1:27"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
@@ -2565,7 +2703,7 @@
><tr
><td class="src clearfix"
><span class="inst-left"
- ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Rep:26"
+ ><span class="instance details-toggle-control details-toggle" data-details-id="i:id:Product:Rep:28"
></span
> <span class="keyword"
>type</span
@@ -2586,7 +2724,7 @@
></tr
><tr
><td colspan="2"
- ><details id="i:id:Product:Rep:26"
+ ><details id="i:id:Product:Rep:28"
><summary class="hide-when-js-enabled"
>Instance details</summary
><p
=====================================
utils/haddock/html-test/ref/PatternSyns.html
=====================================
@@ -308,8 +308,10 @@
></p
><div class="doc"
><p
- >Doc for (<code class="inline-code"
- >><</code
+ >Doc for (<code
+ ><a href="#" title="PatternSyns"
+ >><</a
+ ></code
>)</p
></div
><div class="subs constructors"
=====================================
utils/haddock/html-test/ref/TypeOperators.html
=====================================
@@ -48,6 +48,34 @@
><p class="caption"
>TypeOperators</p
></div
+ ><div id="description"
+ ><p class="caption"
+ >Description</p
+ ><div class="doc"
+ ><p
+ >This documentation refers to <code
+ ><a href="#" title="Data.Type.Equality"
+ >~</a
+ ></code
+ >, <code
+ ><a href="#" title="TypeOperators"
+ >:-:</a
+ ></code
+ >, <code
+ ><a href="#" title="TypeOperators"
+ >:+:</a
+ ></code
+ >, <code
+ ><a href="#" title="TypeOperators"
+ ><=></a
+ ></code
+ >, and <code
+ ><a href="#" title="TypeOperators"
+ >|||</a
+ ></code
+ >.</p
+ ></div
+ ></div
><div id="interface"
><h1
>Documentation</h1
@@ -142,6 +170,18 @@
></p
></div
><div class="top"
+ ><p class="src"
+ ><span class="keyword"
+ >type</span
+ > <a id="t:-124--124--124-" class="def"
+ >(|||)</a
+ > = <a href="#" title="Data.Either"
+ >Either</a
+ > <a href="#" class="selflink"
+ >#</a
+ ></p
+ ></div
+ ><div class="top"
><p class="src"
><a id="v:biO" class="def"
>biO</a
=====================================
utils/haddock/html-test/src/TypeOperators.hs
=====================================
@@ -1,5 +1,6 @@
{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE TypeOperators, GADTs, MultiParamTypeClasses, FlexibleContexts #-}
+-- | This documentation refers to '~', ':-:', ':+:', '<=>', and '|||'.
module TypeOperators where
data a :-: b
@@ -12,6 +13,8 @@ newtype (g `O` f) a = O { unO :: g (f a) }
class a <=> b
+type (|||) = Either
+
biO :: (g `O` f) a
biO = undefined
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/eced323e7b73286ec3e0db6d5cc544…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/eced323e7b73286ec3e0db6d5cc544…
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[Git][ghc/ghc][wip/9.12.3-backports] 11 commits: x86 NCG: Make MOVD's output format explicit
by Zubin (＠wz1000) 16 Sep '25
by Zubin (＠wz1000) 16 Sep '25
16 Sep '25
Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC
Commits:
f6c00dac by ARATA Mizuki at 2025-09-16T14:38:18+05:30
x86 NCG: Make MOVD's output format explicit
The old design led to inference of a wrong format,
losing upper bits of a vector register.
Fixes #25659
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
(cherry picked from commit 62760367dca36da5828875c5423109f9a5523337)
- - - - -
e0437900 by Patrick at 2025-09-16T14:38:18+05:30
Fix deadlock/loop in interface rehydration (#25858)
In #25858, GHC hangs when processing modules with class defaults due to a
circular dependency in the interface rehydration process. The deadlock/loop
occurred when eager class defaults rehydration accessed not-yet-complete module details.
To fix the immediate deadlock/loop.
`tcIfaceDefaults` is refactored, we use the class name directly from the iface
and use `forM` for lazy loading the class, which algins with the handling of other fields
of ModDetails. This laziness ensure rehydration waits for HomePackageTable (HPT) to
be updated and prevent premature evaluation of ModDetails inside `fixIO``.
As suggested by Matthew, class defaults importing is also refactored
to align with the compiler's established interface loading conventions.
- add class defaults field to ExternalPackageState (EPS).
- rehydrate and store class defaults in EPS at `loadInterface`.
- Instead of using `tcIfaceDefaults` in `tcRnImports`, we add and use
`tcGetClsDefaults` to read defaults directly from HPT or EPS
when importing modules.
Tests:
- T25858, T25858v1-2: Test class hydration in defaults
- T25858v3-4: Test type list hydration in defaults
New Note [Tricky rehydrating IfaceDefaults loop] is added.
Thanks to @sheaf (Sam), @mpickering (Matthew), and @simonpj (Simon) for their
valuable input and analysis.
Fixes #25858.
(cherry picked from commit d5ea80c6237c735eb1fb8bcce133e009df99beec)
- - - - -
4fd881a9 by sheaf at 2025-09-16T14:38:19+05:30
9.12 user's guide: NamedDefault semantic change
This commit documents a semantic change in 9.12 that takes effect as
part of the implementation of the NamedDefaults extension: defaulting
will now take place in more situations than it did before, even when
the extension is not enabled!
Fixes #25777
(cherry picked from commit 0d4d6a272f569f19ce7c723dc21b73b2e0493706)
- - - - -
7ddf44a8 by Zubin Duggal at 2025-09-16T14:38:19+05:30
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
Fixes #25950
(cherry picked from commit a4c0c8d32e8c29364062b199abe19b033e3d4381)
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
(cherry picked from commit 91db1d51d2d53346612fe843e863cd71f8f9d338)
- - - - -
04dfd009 by Ben Gamari at 2025-09-16T14:38:19+05:30
rts/linker/LoadArchive: Use bool
Improve type precision by using `bool` instead of `int` and `StgBool`.
(cherry picked from commit 580a33536e6180ce1d623d0922f7de5c975b6b3e)
- - - - -
c497468f by Ben Gamari at 2025-09-16T14:38:19+05:30
rts/linker/LoadArchive: Don't rely on file extensions for identification
Previously archive members would be identified via their file extension,
as described in #13103. We now instead use a more principled approach,
relying on the magic number in the member's header.
As well, we refactor treatment of archive format detection to improve
code clarity and error handling.
Closes #13103.
(cherry picked from commit 76d1041dfa4b96108cfdd22b07f2b3feb424dcbe)
- - - - -
02d052f4 by Ben Gamari at 2025-09-16T14:38:19+05:30
rts/LoadArchive: Handle null terminated string tables
As of `llvm-ar` now emits filename tables terminated with null
characters instead of the usual POSIX `/\n` sequence.
Fixes #26150.
(cherry picked from commit 3b63b254cb8b1832f32751aed6d05ceaabdeb826)
- - - - -
85d64f46 by Ben Gamari at 2025-09-16T14:38:19+05:30
rts/LoadArchive: Handle string table entries terminated with /
llvm-ar appears to terminate string table entries with `/\n` [1]. This
matters in the case of thin archives, since the filename is used. In the
past this worked since `llvm-ar` would produce archives with "small"
filenames when possible. However, now it appears to always use the
string table.
[1] https://github.com/llvm/llvm-project/blob/bfb686bb5ba503e9386dc899e1ebbe248…
(cherry picked from commit 65f19293124acbc2c6493ca9c098fc74150e184a)
- - - - -
533853eb by Andreas Klebinger at 2025-09-16T14:38:19+05:30
rts: Support COFF BigObj files in archives.
(cherry picked from commit 01136779b1d4c1576c925ef673f55c81c45d8551)
- - - - -
4064ead7 by Andrew Lelechenko at 2025-09-16T14:38:19+05:30
hadrian: bump Stackage snapshot to LTS 24.2 / GHC 9.10.2
In line with #25693 we should use GHC 9.10 as a boot compiler,
while Hadrian stack.yaml was stuck on GHC 9.6.
(cherry picked from commit 57d3b4a82e97f379cc8f41d61675d8c3904f7572)
- - - - -
eced323e by Zubin Duggal at 2025-09-16T14:38:19+05:30
Prepare 9.12.3
- - - - -
51 changed files:
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/IfaceToCore.hs-boot
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Types/DefaultEnv.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Unit/External.hs
- compiler/GHC/Unit/Module/ModDetails.hs
- configure.ac
- docs/users_guide/9.12.1-notes.rst
- docs/users_guide/9.12.3-notes.rst
- hadrian/stack.yaml
- hadrian/stack.yaml.lock
- rts/linker/LoadArchive.c
- testsuite/driver/testlib.py
- + testsuite/tests/default/T25858.hs
- + testsuite/tests/default/T25858.stdout
- + testsuite/tests/default/T25858v1.hs
- + testsuite/tests/default/T25858v1.stdout
- + testsuite/tests/default/T25858v1_helper.hs
- + testsuite/tests/default/T25858v2.hs
- + testsuite/tests/default/T25858v2.stdout
- + testsuite/tests/default/T25858v2_helper.hs
- + testsuite/tests/default/T25858v3.hs
- + testsuite/tests/default/T25858v3.stdout
- + testsuite/tests/default/T25858v3_helper.hs
- + testsuite/tests/default/T25858v4.hs
- + testsuite/tests/default/T25858v4.stdout
- testsuite/tests/default/all.T
- testsuite/tests/polykinds/T14172.stderr
- + testsuite/tests/simd/should_run/T25659.hs
- + testsuite/tests/simd/should_run/T25659.stdout
- testsuite/tests/simd/should_run/all.T
- + testsuite/tests/typecheck/should_fail/T25950.hs
- + testsuite/tests/typecheck/should_fail/T25950.stderr
- testsuite/tests/typecheck/should_fail/all.T
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/91db1d51d2d53346612fe843e863cd…
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[Git][ghc/ghc][wip/fix-gen_workspace] rts: Fix alignment for gen_workspace #26334
by Stefan Schulze Frielinghaus (＠stefansf) 16 Sep '25
by Stefan Schulze Frielinghaus (＠stefansf) 16 Sep '25
16 Sep '25
Stefan Schulze Frielinghaus pushed to branch wip/fix-gen_workspace at Glasgow Haskell Compiler / GHC
Commits:
16b5251e by Stefan Schulze Frielinghaus at 2025-09-16T10:59:49+02:00
rts: Fix alignment for gen_workspace #26334
After a0fa4941903272c48b050d24e93eec819eff51bd bootstrap is broken on
s390x and errors out with
rts/sm/GCThread.h:207:5: error:
error: alignment of array elements is greater than element size
207 | gen_workspace gens[];
| ^~~~~~~~~~~~~
The alignment constraint is applied via the attribute to the type
gen_workspace and leaves the underlying type struct gen_workspace_
untouched. On Aarch64, x86, and s390x the struct has a size of 128
bytes. On Aarch64 and x86 the alignments of 128 and 64 are divisors of
the size, respectively, which is why the type is a viable member type
for an array. However, on s390x, the alignment is 256 and therefore is
not a divisor of the size and hence cannot be used for arrays.
Basically I see two fixes here. Either decrease the alignment
requirement on s390x, or by applying the alignment constraint on the
struct itself. The former might affect performance as noted in
a0fa4941903272c48b050d24e93eec819eff51bd. The latter introduces padding
bits whenever necessary in order to ensure that
sizeof(gen_workspace[N])==N*sizeof(gen_workspace) holds which is done by
this patch.
- - - - -
1 changed file:
- rts/sm/GCThread.h
Changes:
=====================================
rts/sm/GCThread.h
=====================================
@@ -83,7 +83,7 @@
// platforms.
#define GEN_WORKSPACE_ALIGNMENT CACHELINE_SIZE
-typedef struct gen_workspace_ {
+typedef struct ATTRIBUTE_ALIGNED(GEN_WORKSPACE_ALIGNMENT) gen_workspace_ {
generation * gen; // the gen for this workspace
struct gc_thread_ * my_gct; // the gc_thread that contains this workspace
@@ -109,7 +109,7 @@ typedef struct gen_workspace_ {
bdescr * part_list;
StgWord n_part_blocks; // count of above
StgWord n_part_words;
-} gen_workspace ATTRIBUTE_ALIGNED(GEN_WORKSPACE_ALIGNMENT);
+} gen_workspace;
/* ----------------------------------------------------------------------------
GC thread object
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/16b5251e2ea0bf5f2a95f6fb7047b1e…
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[Git][ghc/ghc] Pushed new branch wip/fix-gen_workspace
by Stefan Schulze Frielinghaus (＠stefansf) 16 Sep '25
by Stefan Schulze Frielinghaus (＠stefansf) 16 Sep '25
16 Sep '25
Stefan Schulze Frielinghaus pushed new branch wip/fix-gen_workspace at Glasgow Haskell Compiler / GHC
--
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[Git][ghc/ghc][wip/9.12.3-backports] QuickLook: do a shape test before unifying
by Zubin (＠wz1000) 16 Sep '25
by Zubin (＠wz1000) 16 Sep '25
16 Sep '25
Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC
Commits:
91db1d51 by Zubin Duggal at 2025-09-16T08:52:56+00:00
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
Fixes #25950
(cherry picked from commit a4c0c8d32e8c29364062b199abe19b033e3d4381)
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
4 changed files:
- compiler/GHC/Tc/Gen/App.hs
- + testsuite/tests/typecheck/should_fail/T25950.hs
- + testsuite/tests/typecheck/should_fail/T25950.stderr
- testsuite/tests/typecheck/should_fail/all.T
Changes:
=====================================
compiler/GHC/Tc/Gen/App.hs
=====================================
@@ -2040,6 +2040,10 @@ qlUnify ty1 ty2
go_flexi1 kappa ty2 -- ty2 is zonked
| -- See Note [QuickLook unification] (UQL1)
simpleUnifyCheck UC_QuickLook kappa ty2
+ , checkTopShape (metaTyVarInfo kappa) ty2
+ -- NB: don't forget to do a shape check, as we might be dealing
+ -- with an ordinary metavariable (and not a quick-look instantiation variable).
+ -- (Forgetting this led to #25950.)
= do { co <- unifyKind (Just (TypeThing ty2)) ty2_kind kappa_kind
-- unifyKind: see (UQL2) in Note [QuickLook unification]
-- and (MIV2) in Note [Monomorphise instantiation variables]
=====================================
testsuite/tests/typecheck/should_fail/T25950.hs
=====================================
@@ -0,0 +1,6 @@
+{-# LANGUAGE PartialTypeSignatures #-}
+
+module T25950 where
+
+fails :: _ => a
+fails = id $ ()
=====================================
testsuite/tests/typecheck/should_fail/T25950.stderr
=====================================
@@ -0,0 +1,9 @@
+T25950.hs:6:9: error: [GHC-25897]
+ • Couldn't match expected type ‘a’ with actual type ‘()’
+ ‘a’ is a rigid type variable bound by
+ the inferred type of fails :: a
+ at T25950.hs:5:1-15
+ • In the expression: id $ ()
+ In an equation for ‘fails’: fails = id $ ()
+ • Relevant bindings include fails :: a (bound at T25950.hs:6:1)
+
=====================================
testsuite/tests/typecheck/should_fail/all.T
=====================================
@@ -724,6 +724,7 @@ test('T17594c', normal, compile_fail, [''])
test('T17594d', normal, compile_fail, [''])
test('T17594g', normal, compile_fail, [''])
+test('T25950', normal, compile_fail, [''])
test('T24470a', normal, compile_fail, [''])
test('T24553', normal, compile_fail, [''])
test('T23739b', normal, compile_fail, [''])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/91db1d51d2d53346612fe843e863cd7…
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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FIXED] Calculate "RTS ways"
by Sven Tennie (＠supersven) 16 Sep '25
by Sven Tennie (＠supersven) 16 Sep '25
16 Sep '25
Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FIXED at Glasgow Haskell Compiler / GHC
Commits:
a5449ca9 by Sven Tennie at 2025-09-16T05:49:35+00:00
Calculate "RTS ways"
The static string doesn't reflect what GHC provides in tests.
- - - - -
1 changed file:
- hadrian/src/Rules/Generate.hs
Changes:
=====================================
hadrian/src/Rules/Generate.hs
=====================================
@@ -24,6 +24,7 @@ import BindistConfig
import GHC.Toolchain as Toolchain hiding (HsCpp(HsCpp))
import GHC.Platform.ArchOS
+import qualified Data.Set as Set
-- | Track this file to rebuild generated files whenever it changes.
trackGenerateHs :: Expr ()
@@ -492,9 +493,7 @@ generateSettings settingsFile = do
-- Hard-coded as Cabal queries these to determine way support and we
-- need to always advertise all ways when bootstrapping.
-- The settings file is generated at install time when installing a bindist.
- , ("RTS ways", return "v p p p_dyn")
- -- ROMES:TODO: This is what we had previously? Double check we want this hardcoded list.
- -- , ("RTS ways", escapeArgs . map show . Set.toList <$> getRtsWays)
+ , ("RTS ways", unwords . map show . Set.toList <$> getRtsWays)
, ("Relative Global Package DB", pure rel_pkg_db)
, ("base unit-id", pure base_unit_id)
]
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a5449ca95261320942a983e007ec5ea…
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[Git][ghc/ghc][wip/az/ghc-cpp] 154 commits: Move ModuleGraph into UnitEnv
by Alan Zimmerman (＠alanz) 15 Sep '25
by Alan Zimmerman (＠alanz) 15 Sep '25
15 Sep '25
Alan Zimmerman pushed to branch wip/az/ghc-cpp at Glasgow Haskell Compiler / GHC
Commits:
0fb37893 by Matthew Pickering at 2025-06-23T13:55:10-04:00
Move ModuleGraph into UnitEnv
The ModuleGraph is a piece of information associated with the
ExternalPackageState and HomeUnitGraph. Therefore we should store it
inside the HomeUnitEnv.
- - - - -
3bf6720e by soulomoon at 2025-06-23T13:55:52-04:00
Remove hptAllFamInstances usage during upsweep
Fixes #26118
This change eliminates the use of hptAllFamInstances during the upsweep phase,
as it could access non-below modules from the home package table.
The following updates were made:
* Updated checkFamInstConsistency to accept an explicit ModuleEnv FamInstEnv
parameter and removed the call to hptAllFamInstances.
* Adjusted hugInstancesBelow so we can construct ModuleEnv FamInstEnv
from its result,
* hptAllFamInstances and allFamInstances functions are removed.
- - - - -
83ee7b78 by Ben Gamari at 2025-06-24T05:02:07-04:00
configure: Don't force value of OTOOL, etc. if not present
Previously if `otool` and `install_name_tool` were not present they
would be overridden by `fp_settings.m4`. This logic was introduced in
4ff93292243888545da452ea4d4c1987f2343591 without explanation.
- - - - -
9329c9e1 by Ben Gamari at 2025-06-24T05:02:07-04:00
ghc-toolchain: Add support for otool, install_name_tool
Fixes part of ghc#23675.
- - - - -
25f5c998 by Ben Gamari at 2025-06-24T05:02:08-04:00
ghc-toolchain: Add support for llc, opt, llvm-as
Fixes #23675.
- - - - -
51d150dd by Rodrigo Mesquita at 2025-06-24T05:02:08-04:00
hadrian: Use settings-use-distro-mingw directly
The type `ToolchainSetting` only made sense when we had more settings to
fetch from the system config file. Even then "settings-use-distro-mingw"
is arguably not a toolchain setting.
With the fix for #23675, all toolchain tools were moved to the
`ghc-toolchain` `Toolchain` format. Therefore, we can inline
`settings-use-distro-mingw` accesses and delete `ToolchainSetting`.
- - - - -
dcf68a83 by Rodrigo Mesquita at 2025-06-24T05:02:08-04:00
configure: Check LlvmTarget exists for LlvmAsFlags
If LlvmTarget was empty, LlvmAsFlags would be just "--target=".
If it is empty now, simply keep LlvmAsFlags empty.
ghc-toolchain already does this right. This fix makes the two
configurations match up.
- - - - -
580a3353 by Ben Gamari at 2025-06-24T05:02:51-04:00
rts/linker/LoadArchive: Use bool
Improve type precision by using `bool` instead of `int` and `StgBool`.
- - - - -
76d1041d by Ben Gamari at 2025-06-24T05:02:51-04:00
rts/linker/LoadArchive: Don't rely on file extensions for identification
Previously archive members would be identified via their file extension,
as described in #13103. We now instead use a more principled approach,
relying on the magic number in the member's header.
As well, we refactor treatment of archive format detection to improve
code clarity and error handling.
Closes #13103.
- - - - -
4b748a99 by Teo Camarasu at 2025-06-24T15:31:07-04:00
template-haskell: improve changelog
stable -> more stable, just to clarify that this interface isn't fully stable.
errornously -> mistakenly: I typod this and also let's go for a simpler word
- - - - -
e358e477 by Sylvain Henry at 2025-06-24T15:31:58-04:00
Bump stack resolver to use GHC 9.6.7
Cf #26139
- - - - -
4bf5eb63 by fendor at 2025-06-25T17:05:43-04:00
Teach `:reload` about multiple home units
`:reload` needs to lookup the `ModuleName` and must not assume the given
`ModuleName` is in the current `HomeUnit`.
We add a new utility function which allows us to find a `HomeUnitModule`
instead of a `Module`.
Further, we introduce the `GhciCommandError` type which can be used to
abort the execution of a GHCi command.
This error is caught and printed in a human readable fashion.
- - - - -
b3d97bb3 by fendor at 2025-06-25T17:06:25-04:00
Implement `-fno-load-initial-targets` flag
We add the new flag `-fno-load-initial-targets` which doesn't load all `Target`s
immediately but only computes the module graph for all `Target`s.
The user can then decide to load modules from that module graph using
the syntax:
ghci> :reload <Mod>
This will load everything in the module graph up to `Mod`.
The user can return to the initial state by using the builtin target
`none` to unload all modules.
ghci> :reload none
Is in principle identical to starting a new session with the
`-fno-load-initial-targets` flag.
The `-fno-load-initial-targets` flag allows for faster startup time of GHCi when a
user has lots of `Target`s.
We additionally extend the `:reload` command to accept multiple
`ModuleName`s. For example:
ghci> :reload <Mod1> <Mod2>
Loads all modules up to the modules `Mod1` and `Mod2`.
- - - - -
49f44e52 by Teo Camarasu at 2025-06-26T04:19:51-04:00
Expose ghc-internal unit id through the settings file
This in combination with the unit id of the compiler library allows
cabal to know of the two unit ids that should not be reinstalled (in
specific circumstances) as:
- when using plugins, we want to link against exactly the compiler unit
id
- when using TemplateHaskell we want to link against exactly the package
that contains the TemplateHaskell interfaces, which is `ghc-internal`
See: <https://github.com/haskell/cabal/issues/10087>
Resolves #25282
- - - - -
499c4efe by Bryan Richter at 2025-06-26T04:20:33-04:00
CI: Fix and clean up capture of timings
* Fixes the typo that caused 'cat ci-timings' to report "no such file or
directory"
* Gave ci_timings.txt a file extension so it may play better with other
systems
* Fixed the use of time_it so all times are recorded
* Fixed time_it to print name along with timing
- - - - -
86c90c9e by Bryan Richter at 2025-06-26T04:20:33-04:00
CI: Update collapsible section usage
The syntax apparently changed at some point.
- - - - -
04308ee4 by Bryan Richter at 2025-06-26T04:20:33-04:00
CI: Add more collapsible sections
- - - - -
6ac906a1 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
GHC-CPP: first rough proof of concept
Processes
#define FOO
#ifdef FOO
x = 1
#endif
Into
[ITcppIgnored [L loc ITcppDefine]
,ITcppIgnored [L loc ITcppIfdef]
,ITvarid "x"
,ITequal
,ITinteger (IL {il_text = SourceText "1", il_neg = False, il_value = 1})
,ITcppIgnored [L loc ITcppEndif]
,ITeof]
In time, ITcppIgnored will be pushed into a comment
- - - - -
fe321296 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Tidy up before re-visiting the continuation mechanic
- - - - -
e02bec42 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Switch preprocessor to continuation passing style
Proof of concept, needs tidying up
- - - - -
44112223 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Small cleanup
- - - - -
b94f4af1 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Get rid of some cruft
- - - - -
175d73a2 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Starting to integrate.
Need to get the pragma recognised and set
- - - - -
2bf717e7 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Make cppTokens extend to end of line, and process CPP comments
- - - - -
1b23c156 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Remove unused ITcppDefined
- - - - -
b6d668e4 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Allow spaces between # and keyword for preprocessor directive
- - - - -
2b4dbf6f by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Process CPP continuation lines
They are emited as separate ITcppContinue tokens.
Perhaps the processing should be more like a comment, and keep on
going to the end.
BUT, the last line needs to be slurped as a whole.
- - - - -
c03d85cb by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Accumulate CPP continuations, process when ready
Can be simplified further, we only need one CPP token
- - - - -
be8490b3 by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Simplify Lexer interface. Only ITcpp
We transfer directive lines through it, then parse them from scratch
in the preprocessor.
- - - - -
4effc38a by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Deal with directive on last line, with no trailing \n
- - - - -
1ca0e44c by Alan Zimmerman at 2025-06-26T18:37:53+01:00
Start parsing and processing the directives
- - - - -
f0bc133e by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Prepare for processing include files
- - - - -
36cd4957 by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Move PpState into PreProcess
And initParserState, initPragState too
- - - - -
ebbceda2 by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Process nested include files
Also move PpState out of Lexer.x, so it is easy to evolve it in a ghci
session, loading utils/check-cpp/Main.hs
- - - - -
4b141ac7 by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Split into separate files
- - - - -
08df4a1c by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Starting on expression parser.
But it hangs. Time for Text.Parsec.Expr
- - - - -
70bd2d95 by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Start integrating the ghc-cpp work
From https://github.com/alanz/ghc-cpp
- - - - -
fd93d551 by Alan Zimmerman at 2025-06-26T18:37:54+01:00
WIP
- - - - -
84b0c99c by Alan Zimmerman at 2025-06-26T18:37:54+01:00
Fixup after rebase
- - - - -
6ce804b2 by Alan Zimmerman at 2025-06-26T18:38:57+01:00
WIP
- - - - -
c7102f6c by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Fixup after rebase, including all tests pass
- - - - -
d68b4ebc by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Change pragma usage to GHC_CPP from GhcCPP
- - - - -
d5a3082b by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Some comments
- - - - -
ce3fa6b2 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Reformat
- - - - -
4a3e884b by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Delete unused file
- - - - -
e72ee597 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Rename module Parse to ParsePP
- - - - -
d73ef7ce by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Clarify naming in the parser
- - - - -
32a10684 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
WIP. Switching to alex/happy to be able to work in-tree
Since Parsec is not available
- - - - -
21d7ac3f by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Layering is now correct
- GHC lexer, emits CPP tokens
- accumulated in Preprocessor state
- Lexed by CPP lexer, CPP command extracted, tokens concated with
spaces (to get rid of token pasting via comments)
- if directive lexed and parsed by CPP lexer/parser, and evaluated
- - - - -
4bc73df1 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
First example working
Loading Example1.hs into ghci, getting the right results
```
{-# LANGUAGE GHC_CPP #-}
module Example1 where
y = 3
x =
"hello"
"bye now"
foo = putStrLn x
```
- - - - -
f7526d16 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Rebase, and all tests pass except whitespace for generated parser
- - - - -
e94212c9 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
More plumbing. Ready for testing tomorrow.
- - - - -
08215abd by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Proress. Renamed module State from Types
And at first blush it seems to handle preprocessor scopes properly.
- - - - -
5afc16ba by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Insert basic GHC version macros into parser
__GLASGOW_HASKELL__
__GLASGOW_HASKELL_FULL_VERSION__
__GLASGOW_HASKELL_PATCHLEVEL1__
__GLASGOW_HASKELL_PATCHLEVEL2__
- - - - -
6363a3f1 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Re-sync check-cpp for easy ghci work
- - - - -
ffaf09bf by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Get rid of warnings
- - - - -
616fcf5a by Alan Zimmerman at 2025-06-26T18:39:01+01:00
Rework macro processing, in check-cpp
Macros kept at the top level, looked up via name, multiple arity
versions per name can be stored
- - - - -
3828a951 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
WIP. Can crack arguments for #define
Next step it to crack out args in an expansion
- - - - -
8f8dbdb1 by Alan Zimmerman at 2025-06-26T18:39:01+01:00
WIP on arg parsing.
- - - - -
b4f72620 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Progress. Still screwing up nested parens.
- - - - -
84a649d9 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Seems to work, but has redundant code
- - - - -
facdd19c by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Remove redundant code
- - - - -
36c7705d by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Reformat
- - - - -
1f8dc622 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Expand args, single pass
Still need to repeat until fixpoint
- - - - -
7474547d by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Fixed point expansion
- - - - -
5c2944a9 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Sync the playground to compiler
- - - - -
58670a3f by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Working on dumping the GHC_CPP result
But We need to keep the BufSpan in a comment
- - - - -
2c2e5d44 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Keep BufSpan in queued comments in GHC.Parser.Lexer
- - - - -
a3455dd7 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Getting close to being able to print the combined tokens
showing what is in and what is out
- - - - -
6ad166ec by Alan Zimmerman at 2025-06-26T18:39:02+01:00
First implementation of dumpGhcCpp.
Example output
First dumps all macros in the state, then the source, showing which
lines are in and which are out
------------------------------
- |#define FOO(A,B) A + B
- |#define FOO(A,B,C) A + B + C
- |#if FOO(1,FOO(3,4)) == 8
- |-- a comment
|x = 1
- |#else
- |x = 5
- |#endif
- - - - -
907aa1d6 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Clean up a bit
- - - - -
c41f6787 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Add -ddump-ghc-cpp option and a test based on it
- - - - -
c9c55897 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Restore Lexer.x rules, we need them for continuation lines
- - - - -
0e5ee662 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Lexer.x: trying to sort out the span for continuations
- We need to match on \n at the end of the line
- We cannot simply back up for it
- - - - -
69f140f3 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Inserts predefined macros. But does not dump properly
Because the cpp tokens have a trailing newline
- - - - -
a7375551 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Remove unnecessary LExer rules
We *need* the ones that explicitly match to the end of the line.
- - - - -
4c478d03 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Generate correct span for ITcpp
Dump now works, except we do not render trailing `\` for continuation
lines. This is good enough for use in test output.
- - - - -
5eb2bd28 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Reduce duplication in lexer
- - - - -
ff8cf54b by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Tweaks
- - - - -
e110292d by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Insert min_version predefined macros into state
The mechanism now works. Still need to flesh out the full set.
- - - - -
f8010f34 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Trying my alternative pragma syntax.
It works, but dumpGhcCpp is broken, I suspect from the ITcpp token
span update.
- - - - -
bd3b86a3 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Pragma extraction now works, with both CPP and GHC_CPP
For the following
{-# LANGUAGE CPP #-}
#if __GLASGOW_HASKELL__ >= 913
{-# LANGUAGE GHC_CPP #-}
#endif
We will enable GHC_CPP only
- - - - -
877b0918 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Remove some tracing
- - - - -
8b6e6e7e by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Fix test exes for changes
- - - - -
e15dc78d by Alan Zimmerman at 2025-06-26T18:39:02+01:00
For GHC_CPP tests, normalise config-time-based macros
- - - - -
c1c6d5fc by Alan Zimmerman at 2025-06-26T18:39:02+01:00
WIP
- - - - -
63bd3393 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
WIP again. What is wrong?
- - - - -
62d77eb8 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Revert to dynflags for normal not pragma lexing
- - - - -
368205f2 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Working on getting check-exact to work properly
- - - - -
599857bf by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Passes CppCommentPlacement test
- - - - -
94ea2764 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Starting on exact printing with GHC_CPP
While overriding normal CPP
- - - - -
973edb55 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Correctly store CPP ignored tokens as comments
By populating the lexeme string in it, based on the bufpos
- - - - -
bad712ac by Alan Zimmerman at 2025-06-26T18:39:02+01:00
WIP
- - - - -
b5b7560d by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Simplifying
- - - - -
0b68bfb0 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Update the active state logic
- - - - -
ae6de9c3 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Work the new logic into the mainline code
- - - - -
ea22a018 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Process `defined` operator
- - - - -
ea3bfb18 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Manage lexer state while skipping tokens
There is very intricate layout-related state used when lexing. If a
CPP directive blanks out some tokens, store this state when the
blanking starts, and restore it when they are no longer being blanked.
- - - - -
f1a49aed by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Track the last token buffer index, for ITCppIgnored
We need to attach the source being skipped in an ITCppIgnored token.
We cannot simply use its BufSpan as an index into the underlying
StringBuffer as it counts unicode chars, not bytes.
So we update the lexer state to store the starting StringBuffer
location for the last token, and use the already-stored length to
extract the correct portion of the StringBuffer being parsed.
- - - - -
8acd3528 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Process the ! operator in GHC_CPP expressions
- - - - -
5ad037f4 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Predefine a constant when GHC_CPP is being used.
- - - - -
c997f1f8 by Alan Zimmerman at 2025-06-26T18:39:02+01:00
WIP
- - - - -
4f13bcfa by Alan Zimmerman at 2025-06-26T18:39:02+01:00
Skip lines directly in the lexer when required
- - - - -
af131e84 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Properly manage location when accepting tokens again
- - - - -
81dd5ed4 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Seems to be working now, for Example9
- - - - -
bf1017d2 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Remove tracing
- - - - -
44c09f38 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix parsing '*' in block comments
Instead of replacing them with '-'
- - - - -
c6b49b66 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Keep the trailing backslash in a ITcpp token
- - - - -
5a65649b by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Deal with only enabling one section of a group.
A group is an instance of a conditional introduced by
#if/#ifdef/#ifndef,
and ending at the final #endif, including intermediate #elsif sections
- - - - -
ce682fcd by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Replace remaining identifiers with 0 when evaluating
As per the spec
- - - - -
6aea28ee by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Snapshot before rebase
- - - - -
9920e8a5 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Skip non-processed lines starting with #
- - - - -
a78a78fb by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Export generateMacros so we can use it in ghc-exactprint
- - - - -
5d3cda56 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix rebase
- - - - -
10d75bd9 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Expose initParserStateWithMacrosString
- - - - -
e8aedd1e by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix buggy lexer cppSkip
It was skipping all lines, not just ones prefixed by #
- - - - -
0ef3a1c4 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix evaluation of && to use the correct operator
- - - - -
e9e35497 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Deal with closing #-} at the start of a line
- - - - -
88caeca9 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Add the MIN_VERSION_GLASGOW_HASKELL predefined macro
- - - - -
7925b8ad by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Include MIN_VERSION_GLASGOW_HASKELL in GhcCpp01.stderr
- - - - -
7c1769f6 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Use a strict map for macro defines
- - - - -
a54c3ddc by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Process TIdentifierLParen
Which only matters at the start of #define
- - - - -
2caedf81 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Do not provide TIdentifierLParen paren twice
- - - - -
3fd1cc39 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Handle whitespace between identifier and '(' for directive only
- - - - -
e2697e05 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Expose some Lexer bitmap manipulation helpers
- - - - -
7754ec87 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Deal with line pragmas as tokens
Blows up for dumpGhcCpp though
- - - - -
7d180830 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Allow strings delimited by a single quote too
- - - - -
dd41b119 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Allow leading whitespace on cpp directives
As per https://timsong-cpp.github.io/cppwp/n4140/cpp#1
- - - - -
9467f70b by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Implement GHC_CPP undef
- - - - -
1d57e2ac by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Sort out expansion of no-arg macros, in a context with args
And make the expansion bottom out, in the case of recursion
- - - - -
5ae64a16 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix GhcCpp01 test
The LINE pragma stuff works in ghc-exactprint when specifically
setting flag to emit ITline_pragma tokens
- - - - -
b28275f8 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Process comments in CPP directives
- - - - -
b7b3efdc by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Correctly lex pragmas with finel #-} on a newline
- - - - -
a63679e0 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Do not process CPP-style comments
- - - - -
5afdbf2d by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Allow cpp-style comments when GHC_CPP enabled
- - - - -
b21dd666 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Return other pragmas as cpp ignored when GHC_CPP active
- - - - -
9a836f18 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix exactprinting default decl
- - - - -
76d2c7f1 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Reorganise getOptionsFromFile for use in ghc-exactprint
We want to be able to inject predefined macro definitions into the
parser preprocessor state for when we do a hackage roundtrip.
- - - - -
411b81ab by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Tweak testing
- - - - -
766e1ac9 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Only allow unknown cpp pragmas with # in left margin
- - - - -
d7dcd724 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Require # against left margin for all GHC_CPP directives
- - - - -
69434969 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Fix CPP directives appearing in pragmas
And add a test for error reporting for missing `#if`
- - - - -
de0521ac by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Starting to report GHC_CPP errors using GHC machinery
- - - - -
1c95afdb by Alan Zimmerman at 2025-06-26T18:39:03+01:00
More GHC_CPP diagnostic results
- - - - -
4a6e8cd8 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
WIP on converting error calls to GHC diagnostics in GHC_CPP
- - - - -
e4fff6fc by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Working on CPP diagnostic reporting
- - - - -
fa509388 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Tweak some tests/lint warnings
- - - - -
e99bec0a by Alan Zimmerman at 2025-06-26T18:39:03+01:00
More error reporting in Macro
- - - - -
b3ec8656 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Some cleanups
- - - - -
6dfebd81 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Some cleanup
- - - - -
457d25dd by Alan Zimmerman at 2025-06-26T18:39:03+01:00
GHC_CPP: Working on improving error reporting
- - - - -
aa227951 by Alan Zimmerman at 2025-06-26T18:39:03+01:00
Harvest some commonality
- - - - -
e8898afe by Alan Zimmerman at 2025-06-26T18:39:04+01:00
Use PPM as Maybe inside PP
- - - - -
2219f539 by Alan Zimmerman at 2025-06-26T18:39:04+01:00
Clean up a bit
- - - - -
154 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/common.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- compiler/GHC.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Parser/Monad.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Config/Parser.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Flags.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/Iface/Load.hs
- compiler/GHC/Parser.hs-boot
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- + compiler/GHC/Parser/PreProcess.hs
- + compiler/GHC/Parser/PreProcess/Eval.hs
- + compiler/GHC/Parser/PreProcess/Lexer.x
- + compiler/GHC/Parser/PreProcess/Macro.hs
- + compiler/GHC/Parser/PreProcess/ParsePP.hs
- + compiler/GHC/Parser/PreProcess/Parser.y
- + compiler/GHC/Parser/PreProcess/ParserM.hs
- + compiler/GHC/Parser/PreProcess/State.hs
- compiler/GHC/Parser/Utils.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/Setup.hs
- compiler/ghc.cabal.in
- distrib/configure.ac.in
- docs/users_guide/debugging.rst
- docs/users_guide/ghci.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Exception.hs
- ghc/GHCi/UI/Print.hs
- hadrian/cfg/default.host.target.in
- hadrian/cfg/default.target.in
- hadrian/cfg/system.config.in
- hadrian/src/Builder.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/SourceDist.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/stack.yaml
- hadrian/stack.yaml.lock
- libraries/ghc-internal/src/GHC/Internal/LanguageExtensions.hs
- libraries/template-haskell/changelog.md
- m4/fp_settings.m4
- m4/ghc_toolchain.m4
- m4/prep_target_file.m4
- rts/linker/LoadArchive.c
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/driver/T4437.hs
- testsuite/tests/ghc-api/T11579.hs
- + testsuite/tests/ghc-cpp/GhcCpp01.hs
- + testsuite/tests/ghc-cpp/GhcCpp01.stderr
- + testsuite/tests/ghc-cpp/GhcCpp02.hs
- + testsuite/tests/ghc-cpp/GhcCpp02.stderr
- + testsuite/tests/ghc-cpp/all.T
- testsuite/tests/ghc-e/should_fail/T18441fail5.stderr
- testsuite/tests/ghci/prog-mhu003/prog-mhu003.stderr
- testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stderr
- + testsuite/tests/ghci/prog-mhu005/Makefile
- + testsuite/tests/ghci/prog-mhu005/a/A.hs
- + testsuite/tests/ghci/prog-mhu005/all.T
- + testsuite/tests/ghci/prog-mhu005/b/B.hs
- + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.script
- + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.stderr
- + testsuite/tests/ghci/prog-mhu005/prog-mhu005a.stdout
- + testsuite/tests/ghci/prog-mhu005/unitA
- + testsuite/tests/ghci/prog-mhu005/unitB
- + testsuite/tests/ghci/prog021/A.hs
- + testsuite/tests/ghci/prog021/B.hs
- + testsuite/tests/ghci/prog021/Makefile
- + testsuite/tests/ghci/prog021/all.T
- + testsuite/tests/ghci/prog021/prog021a.script
- + testsuite/tests/ghci/prog021/prog021a.stderr
- + testsuite/tests/ghci/prog021/prog021a.stdout
- + testsuite/tests/ghci/prog021/prog021b.script
- + testsuite/tests/ghci/prog021/prog021b.stderr
- + testsuite/tests/ghci/prog021/prog021b.stdout
- + testsuite/tests/ghci/prog022/A.hs
- + testsuite/tests/ghci/prog022/B.hs
- + testsuite/tests/ghci/prog022/Makefile
- + testsuite/tests/ghci/prog022/all.T
- + testsuite/tests/ghci/prog022/ghci.prog022a.script
- + testsuite/tests/ghci/prog022/ghci.prog022a.stderr
- + testsuite/tests/ghci/prog022/ghci.prog022a.stdout
- + testsuite/tests/ghci/prog022/ghci.prog022b.script
- + testsuite/tests/ghci/prog022/ghci.prog022b.stderr
- + testsuite/tests/ghci/prog022/ghci.prog022b.stdout
- testsuite/tests/ghci/scripts/ghci021.stderr
- testsuite/tests/interface-stability/template-haskell-exports.stdout
- + testsuite/tests/printer/CppCommentPlacement.hs
- + utils/check-cpp/.ghci
- + utils/check-cpp/.gitignore
- + utils/check-cpp/Eval.hs
- + utils/check-cpp/Example1.hs
- + utils/check-cpp/Example10.hs
- + utils/check-cpp/Example11.hs
- + utils/check-cpp/Example12.hs
- + utils/check-cpp/Example13.hs
- + utils/check-cpp/Example2.hs
- + utils/check-cpp/Example3.hs
- + utils/check-cpp/Example4.hs
- + utils/check-cpp/Example5.hs
- + utils/check-cpp/Example6.hs
- + utils/check-cpp/Example7.hs
- + utils/check-cpp/Example8.hs
- + utils/check-cpp/Example9.hs
- + utils/check-cpp/Lexer.x
- + utils/check-cpp/Macro.hs
- + utils/check-cpp/Main.hs
- + utils/check-cpp/ParsePP.hs
- + utils/check-cpp/ParseSimulate.hs
- + utils/check-cpp/Parser.y
- + utils/check-cpp/ParserM.hs
- + utils/check-cpp/PreProcess.hs
- + utils/check-cpp/README.md
- + utils/check-cpp/State.hs
- + utils/check-cpp/run.sh
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Parsers.hs
- utils/check-exact/Preprocess.hs
- utils/check-exact/Utils.hs
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Target.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/502678977f99a6f2ba49675472848e…
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