[Git][ghc/ghc][wip/base-stability] 293 commits: Replace the implementation of CodeBuffers with unboxed types
Ben Gamari (@bgamari)
gitlab at gitlab.haskell.org
Fri Jun 30 18:10:54 UTC 2023
Ben Gamari pushed to branch wip/base-stability at Glasgow Haskell Compiler / GHC
Commits:
fbe3fe00 by Josh Meredith at 2023-05-15T18:01:43-04:00
Replace the implementation of CodeBuffers with unboxed types
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21f3aae7 by Josh Meredith at 2023-05-15T18:01:43-04:00
Use unboxed codebuffers in base
Metric Decrease:
encodingAllocations
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18ea2295 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Weak pointer cleanups
Various stylistic cleanups. No functional changes.
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c343112f by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Don't force debug output to stderr
Previously `+RTS -Dw -l` would emit debug output to the eventlog while
`+RTS -l -Dw` would emit it to stderr. This was because the parser for
`-D` would unconditionally override the debug output target. Now we
instead only do so if no it is currently `TRACE_NONE`.
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a5f5f067 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Forcibly flush eventlog on barf
Previously we would attempt to flush via `endEventLogging` which can
easily deadlock, e.g., if `barf` fails during GC.
Using `flushEventLog` directly may result in slightly less consistent
eventlog output (since we don't take all capabilities before flushing)
but avoids deadlocking.
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73b1e87c by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Assert that pointers aren't cleared by -DZ
This turns many segmentation faults into much easier-to-debug assertion
failures by ensuring that LOOKS_LIKE_*_PTR checks recognize bit-patterns
produced by `+RTS -DZ` clearing as invalid pointers.
This is a bit ad-hoc but this is the debug runtime.
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37fb61d8 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Introduce printGlobalThreads
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451d65a6 by Ben Gamari at 2023-05-15T18:02:20-04:00
rts: Don't sanity-check StgTSO.global_link
See Note [Avoid dangling global_link pointers].
Fixes #19146.
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d69cbd78 by sheaf at 2023-05-15T18:03:00-04:00
Split up tyThingToIfaceDecl from GHC.Iface.Make
This commit moves tyThingToIfaceDecl and coAxiomToIfaceDecl
from GHC.Iface.Make into GHC.Iface.Decl.
This avoids GHC.Types.TyThing.Ppr, which needs tyThingToIfaceDecl,
transitively depending on e.g. GHC.Iface.Load and GHC.Tc.Utils.Monad.
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4d29ecdf by sheaf at 2023-05-15T18:03:00-04:00
Migrate errors to diagnostics in GHC.Tc.Module
This commit migrates the errors in GHC.Tc.Module to use the new
diagnostic infrastructure.
It required a significant overhaul of the compatibility checks between
an hs-boot or signature module and its implementation; we now use
a Writer monad to accumulate errors; see the BootMismatch datatype
in GHC.Tc.Errors.Types, with its panoply of subtypes.
For the sake of readability, several local functions inside the
'checkBootTyCon' function were split off into top-level functions.
We split off GHC.Types.HscSource into a "boot or sig" vs "normal hs file"
datatype, as this mirrors the logic in several other places where we
want to treat hs-boot and hsig files in a similar fashion.
This commit also refactors the Backpack checks for type synonyms
implementing abstract data, to correctly reject implementations that
contain qualified or quantified types (this fixes #23342 and #23344).
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d986c98e by Rodrigo Mesquita at 2023-05-16T00:14:04-04:00
configure: Drop unused AC_PROG_CPP
In configure, we were calling `AC_PROG_CPP` but never making use of the
$CPP variable it sets or reads.
The issue is $CPP will show up in the --help output of configure,
falsely advertising a configuration option that does nothing.
The reason we don't use the $CPP variable is because HS_CPP_CMD is
expected to be a single command (without flags), but AC_PROG_CPP, when
CPP is unset, will set said variable to something like `/usr/bin/gcc -E`.
Instead, we configure HS_CPP_CMD through $CC.
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a8f0435f by Cheng Shao at 2023-05-16T00:14:42-04:00
rts: fix --disable-large-address-space
This patch moves
ACQUIRE_ALLOC_BLOCK_SPIN_LOCK/RELEASE_ALLOC_BLOCK_SPIN_LOCK from
Storage.h to HeapAlloc.h. When --disable-large-address-space is passed
to configure, the code in HeapAlloc.h makes use of these two macros.
Fixes #23385.
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bdb93cd2 by Oleg Grenrus at 2023-05-16T07:59:21+03:00
Add -Wmissing-role-annotations
Implements #22702
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41ecfc34 by Ben Gamari at 2023-05-16T07:28:15-04:00
base: Export {get,set}ExceptionFinalizer from System.Mem.Weak
As proposed in CLC Proposal #126 [1].
[1]: https://github.com/haskell/core-libraries-committee/issues/126
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67330303 by Ben Gamari at 2023-05-16T07:28:16-04:00
base: Introduce printToHandleFinalizerExceptionHandler
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5e3f9bb5 by Josh Meredith at 2023-05-16T13:59:22-04:00
JS: Implement h$clock_gettime in the JavaScript RTS (#23360)
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90e69d5d by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation for SourceText
SourceText is serialized along with INLINE pragmas into interface files. Many of
these SourceTexts are identical, for example "{-# INLINE#". When deserialized,
each such SourceText was previously expanded out into a [Char], which is highly
wasteful of memory, and each such instance of the text would allocate an
independent list with its contents as deserializing breaks any sharing that might
have existed.
Instead, we use a `FastString` to represent these, so that each instance unique
text will be interned and stored in a memory efficient manner.
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b70bc690 by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation/FastStrings for `SourceNote`s
`SourceNote`s should not be stored as [Char] as this is highly wasteful
and in certain scenarios can be highly duplicated.
Metric Decrease:
hard_hole_fits
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6231a126 by Zubin Duggal at 2023-05-16T14:00:00-04:00
compiler: Use compact representation for UsageFile (#22744)
Use FastString to store filepaths in interface files, as this data is
highly redundant so we want to share all instances of filepaths in the
compiler session.
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47a58150 by Zubin Duggal at 2023-05-16T14:00:00-04:00
testsuite: add test for T22744
This test checks for #22744 by compiling 100 modules which each have
a dependency on 1000 distinct external files.
Previously, when loading these interfaces from disk, each individual instance
of a filepath in the interface will would be allocated as an individual object
on the heap, meaning we have heap objects for 100*1000 files, when there are
only 1000 distinct files we care about.
This test checks this by first compiling the module normally, then measuring
the peak memory usage in a no-op recompile, as the recompilation checking will
force the allocation of all these filepaths.
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0451bdc9 by Ben Gamari at 2023-05-16T21:31:40-04:00
users guide: Add glossary
Currently this merely explains the meaning of "technology preview" in
the context of released features.
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0ba52e4e by Ben Gamari at 2023-05-16T21:31:40-04:00
Update glossary.rst
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3d23060c by Ben Gamari at 2023-05-16T21:31:40-04:00
Use glossary directive
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2972fd66 by Sylvain Henry at 2023-05-16T21:32:20-04:00
JS: fix getpid (fix #23399)
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5fe1d3e6 by Matthew Pickering at 2023-05-17T21:42:00-04:00
Use setSrcSpan rather than setLclEnv in solveForAll
In subsequent MRs (#23409) we want to remove the TcLclEnv argument from
a CtLoc. This MR prepares us for that by removing the one place where
the entire TcLclEnv is used, by using it more precisely to just set the
contexts source location.
Fixes #23390
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385edb65 by Torsten Schmits at 2023-05-17T21:42:40-04:00
Update the users guide paragraph on -O in GHCi
In relation to #23056
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87626ef0 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Add test for #13660
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9eef53b1 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Move implementation of GHC.Foreign to GHC.Internal
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174ea2fa by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Introduce {new,with}CStringLen0
These are useful helpers for implementing the internal-NUL code unit
check needed to fix #13660.
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a46ced16 by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Clean up documentation
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b98d99cc by Ben Gamari at 2023-05-18T15:18:53-04:00
base: Ensure that FilePaths don't contain NULs
POSIX filepaths may not contain the NUL octet but previously we did not
reject such paths. This could be exploited by untrusted input to cause
discrepancies between various `FilePath` queries and the opened
filename. For instance, `readFile "hello.so\x00.txt"` would open the
file `"hello.so"` yet `takeFileExtension` would return `".txt"`.
The same argument applies to Windows FilePaths
Fixes #13660.
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7ae45459 by Simon Peyton Jones at 2023-05-18T15:19:29-04:00
Allow the demand analyser to unpack tuple and equality dictionaries
Addresses #23398. The demand analyser usually does not unpack class
dictionaries: see Note [Do not unbox class dictionaries] in
GHC.Core.Opt.DmdAnal.
This patch makes an exception for tuple dictionaries and equality
dictionaries, for reasons explained in wrinkles (DNB1) and (DNB2) of
the above Note.
Compile times fall by 0.1% for some reason (max 0.7% on T18698b).
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b53a9086 by Greg Steuck at 2023-05-18T15:20:08-04:00
Use a simpler and more portable construct in ld.ldd check
printf '%q\n' is a bash extension which led to incorrectly
failing an ld.lld test on OpenBSD which uses pdksh as /bin/sh
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dd5710af by Torsten Schmits at 2023-05-18T15:20:50-04:00
Update the warning about interpreter optimizations
to reflect that they're not incompatible anymore, but guarded by a flag
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4f6dd999 by Matthew Pickering at 2023-05-18T15:21:26-04:00
Remove stray dump flags in GHC.Rename.Names
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4bca0486 by Oleg Grenrus at 2023-05-19T11:51:33+03:00
Make Warn = Located DriverMessage
This change makes command line argument parsing use diagnostic
framework for producing warnings.
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525ed554 by Simon Peyton Jones at 2023-05-19T10:09:15-04:00
Type inference for data family newtype instances
This patch addresses #23408, a tricky case with data family
newtype instances. Consider
type family TF a where TF Char = Bool
data family DF a
newtype instance DF Bool = MkDF Int
and [W] Int ~R# DF (TF a), with a Given (a ~# Char). We must fully
rewrite the Wanted so the tpye family can fire; that wasn't happening.
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c6fb6690 by Peter Trommler at 2023-05-20T03:16:08-04:00
testsuite: fix predicate on rdynamic test
Test rdynamic requires dynamic linking support, which is
orthogonal to RTS linker support. Change the predicate accordingly.
Fixes #23316
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735d504e by Matthew Pickering at 2023-05-20T03:16:44-04:00
docs: Use ghc-ticket directive where appropiate in users guide
Using the directive automatically formats and links the ticket
appropiately.
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b56d7379 by Sylvain Henry at 2023-05-22T14:21:22-04:00
NCG: remove useless .align directive (#20758)
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15b93d2f by Simon Peyton Jones at 2023-05-22T14:21:58-04:00
Add test for #23156
This program had exponential typechecking time in GHC 9.4 and 9.6
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2b53f206 by Greg Steuck at 2023-05-22T20:23:11-04:00
Revert "Change hostSupportsRPaths to report False on OpenBSD"
This reverts commit 1e0d8fdb55a38ece34fa6cf214e1d2d46f5f5bf2.
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882e43b7 by Greg Steuck at 2023-05-22T20:23:11-04:00
Disable T17414 on OpenBSD
Like on other systems it's not guaranteed that there's sufficient
space in /tmp to write 2G out.
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9d531f9a by Greg Steuck at 2023-05-22T20:23:11-04:00
Bring back getExecutablePath to getBaseDir on OpenBSD
Fix #18173
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9db0eadd by Krzysztof Gogolewski at 2023-05-22T20:23:47-04:00
Add an error origin for impedance matching (#23427)
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33cf4659 by Ben Gamari at 2023-05-23T03:46:20-04:00
testsuite: Add tests for #23146
Both lifted and unlifted variants.
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76727617 by Ben Gamari at 2023-05-23T03:46:21-04:00
codeGen: Fix some Haddocks
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33a8c348 by Ben Gamari at 2023-05-23T03:46:21-04:00
codeGen: Give proper LFInfo to datacon wrappers
As noted in `Note [Conveying CAF-info and LFInfo between modules]`,
when importing a binding from another module we must ensure that it gets
the appropriate `LambdaFormInfo` if it is in WHNF to ensure that
references to it are tagged correctly.
However, the implementation responsible for doing this,
`GHC.StgToCmm.Closure.mkLFImported`, only dealt with datacon workers and
not wrappers. This lead to the crash of this program in #23146:
module B where
type NP :: [UnliftedType] -> UnliftedType
data NP xs where
UNil :: NP '[]
module A where
import B
fieldsSam :: NP xs -> NP xs -> Bool
fieldsSam UNil UNil = True
x = fieldsSam UNil UNil
Due to its GADT nature, `UNil` produces a trivial wrapper
$WUNil :: NP '[]
$WUNil = UNil @'[] @~(<co:1>)
which is referenced in the RHS of `A.x`. Due to the above-mentioned bug
in `mkLFImported`, the references to `$WUNil` passed to `fieldsSam` were
not tagged. This is problematic as `fieldsSam` expected its arguments to
be tagged as they are unlifted.
The fix is straightforward: extend the logic in `mkLFImported` to cover
(nullary) datacon wrappers as well as workers. This is safe because we
know that the wrapper of a nullary datacon will be in WHNF, even if it
includes equalities evidence (since such equalities are not runtime
relevant).
Thanks to @MangoIV for the great ticket and @alt-romes for his
minimization and help debugging.
Fixes #23146.
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2fc18e9e by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
codeGen: Fix LFInfo of imported datacon wrappers
As noted in #23231 and in the previous commit, we were failing to give a
an LFInfo of LFCon to a nullary datacon wrapper from another module,
failing to properly tag pointers which ultimately led to the
segmentation fault in #23146.
On top of the previous commit which now considers wrappers where we
previously only considered workers, we change the order of the guards so
that we check for the arity of the binding before we check whether it is
a constructor. This allows us to
(1) Correctly assign `LFReEntrant` to imported wrappers whose worker was
nullary, which we previously would fail to do
(2) Remove the `isNullaryRepDataCon` predicate:
(a) which was previously wrong, since it considered wrappers whose
workers had zero-width arguments to be non-nullary and would fail to
give `LFCon` to them
(b) is now unnecessary, since arity == 0 guarantees
- that the worker takes no arguments at all
- and the wrapper takes no arguments and its RHS must be an
application of the worker to zero-width-args only.
- we lint these two items with an assertion that the datacon
`hasNoNonZeroWidthArgs`
We also update `isTagged` to use the new logic in determining the
LFInfos of imported Ids.
The creation of LFInfos for imported Ids and this detail are explained
in Note [The LFInfo of Imported Ids].
Note that before the patch to those issues we would already consider these
nullary wrappers to have `LFCon` lambda form info; but failed to re-construct
that information in `mkLFImported`
Closes #23231, #23146
(I've additionally batched some fixes to documentation I found while
investigating this issue)
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0598f7f0 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Make LFInfos for DataCons on construction
As a result of the discussion in !10165, we decided to amend the
previous commit which fixed the logic of `mkLFImported` with regard to
datacon workers and wrappers.
Instead of having the logic for the LFInfo of datacons be in
`mkLFImported`, we now construct an LFInfo for all data constructors on
GHC.Types.Id.Make and store it in the `lfInfo` field.
See the new Note [LFInfo of DataCon workers and wrappers] and
ammendments to Note [The LFInfo of Imported Ids]
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12294b22 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Update Note [Core letrec invariant]
Authored by @simonpj
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e93ab972 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Rename mkLFImported to importedIdLFInfo
The `mkLFImported` sounded too much like a constructor of sorts, when
really it got the `LFInfo` of an imported Id from its `lf_info` field
when this existed, and otherwise returned a conservative estimate of
that imported Id's LFInfo. This in contrast to functions such as
`mkLFReEntrant` which really are about constructing an `LFInfo`.
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e54d9259 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Enforce invariant on typePrimRepArgs in the types
As part of the documentation effort in !10165 I came across this
invariant on 'typePrimRepArgs' which is easily expressed at the
type-level through a NonEmpty list.
It allowed us to remove one panic.
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b8fe6a0c by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00
Merge outdated Note [Data con representation] into Note [Data constructor representation]
Introduce new Note [Constructor applications in STG] to better support
the merge, and reference it from the relevant bits in the STG syntax.
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e1590ddc by Simon Peyton Jones at 2023-05-23T03:46:57-04:00
Add the SolverStage monad
This refactoring makes a substantial improvement in the
structure of the type-checker's constraint solver: #23070.
Specifically:
* Introduced the SolverStage monad. See GHC.Tc.Solver.Monad
Note [The SolverStage monad]
* Make each solver pipeline (equalities, dictionaries, irreds etc)
deal with updating the inert set, as a separate SolverStage. There
is sometimes special stuff to do, and it means that each full
pipeline can have type SolverStage Void, indicating that they never
return anything.
* Made GHC.Tc.Solver.Equality.zonkEqTypes into a SolverStage. Much nicer.
* Combined the remnants of GHC.Tc.Solver.Canonical and
GHC.Tc.Solver.Interact into a new module GHC.Tc.Solver.Solve.
(Interact and Canonical are removed.)
* Gave the same treatment to dictionary and irred constraints
as I have already done for equality constraints:
* New types (akin to EqCt): IrredCt and DictCt
* Ct is now just a simple sum type
data Ct
= CDictCan DictCt
| CIrredCan IrredCt
| CEqCan EqCt
| CQuantCan QCInst
| CNonCanonical CtEvidence
* inert_dicts can now have the better type DictMap DictCt, instead of
DictMap Ct; and similarly inert_irreds.
* Significantly simplified the treatment of implicit parameters.
Previously we had a number of special cases
* interactGivenIP, an entire function
* special case in maybeKickOut
* special case in findDict, when looking up dictionaries
But actually it's simpler than that. When adding a new Given, implicit
parameter constraint to the InertSet, we just need to kick out any
existing inert constraints that mention that implicit parameter.
The main work is done in GHC.Tc.Solver.InertSet.delIPDict, along with
its auxiliary GHC.Core.Predicate.mentionsIP.
See Note [Shadowing of implicit parameters] in GHC.Tc.Solver.Dict.
* Add a new fast-path in GHC.Tc.Errors.Hole.tcCheckHoleFit.
See Note [Fast path for tcCheckHoleFit]. This is a big win in some cases:
test hard_hole_fits gets nearly 40% faster (at compile time).
* Add a new fast-path for solving /boxed/ equality constraints
(t1 ~ t2). See Note [Solving equality classes] in GHC.Tc.Solver.Dict.
This makes a big difference too: test T17836 compiles 40% faster.
* Implement the PermissivePlan of #23413, which concerns what happens with
insoluble Givens. Our previous treatment was wildly inconsistent as that
ticket pointed out.
A part of this, I simplified GHC.Tc.Validity.checkAmbiguity: now we simply
don't run the ambiguity check at all if -XAllowAmbiguousTypes is on.
Smaller points:
* In `GHC.Tc.Errors.misMatchOrCND` instead of having a special case for
insoluble /occurs/ checks, broaden in to all insouluble constraints.
Just generally better. See Note [Insoluble mis-match] in that module.
As noted above, compile time perf gets better. Here are the changes
over 0.5% on Fedora. (The figures are slightly larger on Windows for
some reason.)
Metrics: compile_time/bytes allocated
-------------------------------------
LargeRecord(normal) -0.9%
MultiLayerModulesTH_OneShot(normal) +0.5%
T11822(normal) -0.6%
T12227(normal) -1.8% GOOD
T12545(normal) -0.5%
T13035(normal) -0.6%
T15703(normal) -1.4% GOOD
T16875(normal) -0.5%
T17836(normal) -40.7% GOOD
T17836b(normal) -12.3% GOOD
T17977b(normal) -0.5%
T5837(normal) -1.1%
T8095(normal) -2.7% GOOD
T9020(optasm) -1.1%
hard_hole_fits(normal) -37.0% GOOD
geo. mean -1.3%
minimum -40.7%
maximum +0.5%
Metric Decrease:
T12227
T15703
T17836
T17836b
T8095
hard_hole_fits
LargeRecord
T9198
T13035
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6abf3648 by Simon Peyton Jones at 2023-05-23T03:46:57-04:00
Avoid an assertion failure in abstractFloats
The function GHC.Core.Opt.Simplify.Utils.abstractFloats
was carelessly calling lookupIdSubst_maybe on a CoVar;
but a precondition of the latter is being given an Id.
In fact it's harmless to call it on a CoVar, but still, the
precondition on lookupIdSubst_maybe makes sense, so I added
a test for CoVars.
This avoids a crash in a DEBUG compiler, but otherwise has
no effect. Fixes #23426.
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838aaf4b by hainq at 2023-05-24T12:41:19-04:00
Migrate errors in GHC.Tc.Validity
This patch migrates the error messages in GHC.Tc.Validity to use
the new diagnostic infrastructure.
It adds the constructors:
- TcRnSimplifiableConstraint
- TcRnArityMismatch
- TcRnIllegalInstanceDecl, with sub-datatypes for HasField errors
and fundep coverage condition errors.
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8539764b by Krzysztof Gogolewski at 2023-05-24T12:41:56-04:00
linear lint: Add missing processing of DEFAULT
In this correct program
f :: a %1 -> a
f x = case x of x { _DEFAULT -> x }
after checking the alternative we weren't popping the case binder 'x'
from the usage environment, which meant that the lambda-bound 'x'
was counted twice: in the scrutinee and (incorrectly) in the alternative.
In fact, we weren't checking the usage of 'x' at all.
Now the code for handling _DEFAULT is similar to the one handling
data constructors.
Fixes #23025.
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ae683454 by Matthew Pickering at 2023-05-24T12:42:32-04:00
Remove outdated "Don't check hs-boot type family instances too early" note
This note was introduced in 25b70a29f623 which delayed performing some
consistency checks for type families. However, the change was reverted
later in 6998772043a7f0b0360116eb5ffcbaa5630b21fb but the note was not
removed.
I found it confusing when reading to code to try and work out what
special behaviour there was for hs-boot files (when in-fact there isn't
any).
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44af57de by Matthew Pickering at 2023-05-24T12:43:08-04:00
rts: Define ticky macro stubs
These macros have long been undefined which has meant we were missing
reporting these allocations in ticky profiles.
The most critical missing definition was TICK_ALLOC_HEAP_NOCTR which was
missing all the RTS calls to allocate, this leads to a the overall
ALLOC_RTS_tot number to be severaly underreported.
Of particular interest though is the ALLOC_STACK_ctr and ALLOC_STACK_tot
counters which are useful to tracking stack allocations.
Fixes #23421
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b2dabe3a by Matthew Pickering at 2023-05-24T12:43:08-04:00
rts: ticky: Rename TICK_ALLOC_HEAP_NOCTR to TICK_ALLOC_RTS
This macro increments the ALLOC_HEAP_tot and ALLOC_HEAP_ctr so it makes
more sense to name it after that rather than the suffix NOCTR, whose
meaning has been lost to the mists of time.
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eac4420a by Ben Gamari at 2023-05-24T12:43:45-04:00
users guide: A few small mark-up fixes
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a320ca76 by Rodrigo Mesquita at 2023-05-24T12:44:20-04:00
configure: Fix support check for response files.
In failing to escape the '-o' in '-o\nconftest\nconftest.o\n' argument
to printf, the writing of the arguments response file always failed.
The fix is to pass the arguments after `--` so that they are treated
positional arguments rather than flags to printf.
Closes #23435
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f21ce0e4 by mangoiv at 2023-05-24T12:45:00-04:00
[feat] add .direnv to the .gitignore file
- - - - -
36d5944d by Bodigrim at 2023-05-24T20:58:34-04:00
Add Data.List.unsnoc
See https://github.com/haskell/core-libraries-committee/issues/165 for discussion
- - - - -
c0f2f9e3 by Bartłomiej Cieślar at 2023-05-24T20:59:14-04:00
Fix crash in backpack signature merging with -ddump-rn-trace
In some cases, backpack signature merging could crash in addUsedGRE
when -ddump-rn-trace was enabled, as pretty-printing the GREInfo would cause
unavailable interfaces to be loaded.
This commit fixes that issue by not pretty-printing the GREInfo in addUsedGRE
when -ddump-rn-trace is enabled.
Fixes #23424
Signed-off-by: Bartłomiej Cieślar <bcieslar2001 at gmail.com>
- - - - -
5a07d94a by Krzysztof Gogolewski at 2023-05-25T03:30:20-04:00
Add a regression test for #13981
The panic was fixed by 6998772043a7f0b. Fixes #13981.
- - - - -
182df90e by Krzysztof Gogolewski at 2023-05-25T03:30:57-04:00
Add a test for #23355
It was fixed by !10061, so I'm adding it in the same group.
- - - - -
1b31b039 by uhbif19 at 2023-05-25T12:08:28+02:00
Migrate errors in GHC.Rename.Splice GHC.Rename.Pat
This commit migrates the errors in GHC.Rename.Splice and GHC.Rename.Pat
to use the new diagnostic infrastructure.
- - - - -
56abe494 by sheaf at 2023-05-25T12:09:55+02:00
Common up Template Haskell errors in TcRnMessage
This commit commons up the various Template Haskell errors into a
single constructor, TcRnTHError, of TcRnMessage.
- - - - -
a487ba9e by Krzysztof Gogolewski at 2023-05-25T14:35:56-04:00
Enable ghci tests for unboxed tuples
The tests were originally skipped because ghci used not to support
unboxed tuples/sums.
- - - - -
dc3422d4 by Matthew Pickering at 2023-05-25T18:57:19-04:00
rts: Build ticky GHC with single-threaded RTS
The threaded RTS allows you to use ticky profiling but only for the
counters in the generated code. The counters used in the C portion of
the RTS are disabled. Updating the counters is also racy using the
threaded RTS which can lead to misleading or incorrect ticky results.
Therefore we change the hadrian flavour to build using the
single-threaded RTS (mainly in order to get accurate C code counter
increments)
Fixes #23430
- - - - -
fbc8e04e by sheaf at 2023-05-25T18:58:00-04:00
Propagate long-distance info in generated code
When desugaring generated pattern matches, we skip pattern match checks.
However, this ended up also discarding long-distance information, which
might be needed for user-written sub-expressions.
Example:
```haskell
okay (GADT di) cd =
let sr_field :: ()
sr_field = case getFooBar di of { Foo -> () }
in case cd of { SomeRec _ -> SomeRec sr_field }
```
With sr_field a generated FunBind, we still want to propagate the outer
long-distance information from the GADT pattern match into the checks
for the user-written RHS of sr_field.
Fixes #23445
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f8ced241 by Matthew Pickering at 2023-05-26T15:26:21-04:00
Introduce GHCiMessage to wrap GhcMessage
By introducing a wrapped message type we can control how certain
messages are printed in GHCi (to add extra information for example)
- - - - -
58e554c1 by Matthew Pickering at 2023-05-26T15:26:22-04:00
Generalise UnknownDiagnostic to allow embedded diagnostics to access
parent diagnostic options.
* Split default diagnostic options from Diagnostic class into
HasDefaultDiagnosticOpts class.
* Generalise UnknownDiagnostic to allow embedded diagnostics to access
options.
The principle idea here is that when wrapping an error message (such as
GHCMessage to make GHCiMessage) then we need to also be able to lift the
configuration when overriding how messages are printed (see load' for an
example).
- - - - -
b112546a by Matthew Pickering at 2023-05-26T15:26:22-04:00
Allow API users to wrap error messages created during 'load'
This allows API users to configure how messages are rendered when they
are emitted from the load function. For an example see how
'loadWithCache' is used in GHCi.
- - - - -
2e4cf0ee by Matthew Pickering at 2023-05-26T15:26:22-04:00
Abstract cantFindError and turn Opt_BuildingCabal into a print-time option
* cantFindError is abstracted so that the parts which mention specific
things about ghc/ghci are parameters. The intention being that
GHC/GHCi can specify the right values to put here but otherwise
display the same error message.
* The BuildingCabalPackage argument from GenericMissing is removed and
turned into a print-time option. The reason for the error is not
dependent on whether `-fbuilding-cabal-package` is passed, so we don't
want to store that in the error message.
- - - - -
34b44f7d by Matthew Pickering at 2023-05-26T15:26:22-04:00
error messages: Don't display ghci specific hints for missing packages
Tickets like #22884 suggest that it is confusing that GHC used on the
command line can suggest options which only work in GHCi.
This ticket uses the error message infrastructure to override certain
error messages which displayed GHCi specific information so that this
information is only showed when using GHCi.
The main annoyance is that we mostly want to display errors in the same
way as before, but with some additional information. This means that the
error rendering code has to be exported from the Iface/Errors/Ppr.hs
module.
I am unsure about whether the approach taken here is the best or most
maintainable solution.
Fixes #22884
- - - - -
05a1b626 by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Don't override existing metadata if version already exists.
If a nightly pipeline runs twice for some reason for the same version
then we really don't want to override an existing entry with new
bindists. This could cause ABI compatability issues for users or break
ghcup's caching logic.
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fcbcb3cc by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Use proper API url for bindist download
Previously we were using links from the web interface, but it's more
robust and future-proof to use the documented links to the artifacts.
https://docs.gitlab.com/ee/api/job_artifacts.html
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5b59c8fe by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Set Nightly and LatestNightly tags
The latest nightly release needs the LatestNightly tag, and all other
nightly releases need the Nightly tag. Therefore when the metadata is
updated we need to replace all LatestNightly with Nightly.`
- - - - -
914e1468 by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Download nightly metadata for correct date
The metadata now lives in https://gitlab.haskell.org/ghc/ghcup-metadata
with one metadata file per year. When we update the metadata we download
and update the right file for the current year.
- - - - -
16cf7d2e by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Download metadata and update for correct year
something about pipeline date
- - - - -
14792c4b by Matthew Pickering at 2023-05-26T15:26:58-04:00
ghcup-metadata: Don't skip CI
On a push we now have a CI job which updates gitlab pages with the
metadata files.
- - - - -
1121bdd8 by Matthew Pickering at 2023-05-26T15:26:59-04:00
ghcup-metadata: Add --date flag to specify the release date
The ghcup-metadata now has a viReleaseDay field which needs to be
populated with the day of the release.
- - - - -
bc478bee by Matthew Pickering at 2023-05-26T15:26:59-04:00
ghcup-metadata: Add dlOutput field
ghcup now requires us to add this field which specifies where it should
download the bindist to. See
https://gitlab.haskell.org/ghc/ghcup-metadata/-/issues/1 for some more
discussion.
- - - - -
2bdbd9da by Josh Meredith at 2023-05-26T15:27:35-04:00
JS: Convert rendering to use HLine instead of SDoc (#22455)
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abd9e37c by Norman Ramsey at 2023-05-26T15:28:12-04:00
testsuite: add WasmControlFlow test
This patch adds the WasmControlFlow test to test the wasm backend's
relooper component.
- - - - -
07f858eb by Sylvain Henry at 2023-05-26T15:28:53-04:00
Factorize getLinkDeps
Prepare reuse of getLinkDeps for TH implementation in the JS backend
(cf #22261 and review of !9779).
- - - - -
fad9d092 by Oleg Grenrus at 2023-05-27T13:38:08-04:00
Change GHC.Driver.Session import to .DynFlags
Also move targetPlatform selector
Plenty of GHC needs just DynFlags.
Even more can be made to use .DynFlags if more selectors is migrated.
This is a low hanging fruit.
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69fdbece by Alan Zimmerman at 2023-05-27T13:38:45-04:00
EPA: Better fix for #22919
The original fix for #22919 simply removed the ability to match up
prior comments with the first declaration in the file.
Restore it, but add a check that the comment is on a single line, by
ensuring that it comes immediately prior to the next thing (comment or
start of declaration), and that the token preceding it is not on the
same line.
closes #22919
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0350b186 by Josh Meredith at 2023-05-29T12:46:27+00:00
Remove JavaScriptFFI from --supported-extensions for non-JS targets (#11214)
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b4816919 by Matthew Pickering at 2023-05-30T17:07:43-04:00
testsuite: Pass -kb16k -kc128k for performance tests
Setting a larger stack chunk size gives a greater protection
from stack thrashing (where the repeated overflow/underflow allocates a lot of
stack chunks which sigificantly impact allocations). This
stabilises some tests against differences cause by more things being
pushed onto the stack.
The performance tests are generally testing work done by the compiler,
using allocation as a proxy, so removing/stabilising the allocations due
to the stack gives us more stable tests which are also more sensitive
to actual changes in compiler performance.
The tests which increase are ones where we compile a lot of modules, and
for each module we spawn a thread to compile the module in. Therefore
increasing these numbers has a multiplying effect on these tests because
there are many more stacks which we can increase in size.
The most significant improvements though are cases such as T8095 which
reduce significantly in allocations (30%). This isn't a performance
improvement really but just helps stabilise the test against this
threshold set by the defaults.
Fixes #23439
-------------------------
Metric Decrease:
InstanceMatching
T14683
T8095
T9872b_defer
T9872d
T9961
hie002
T19695
T3064
Metric Increase:
MultiLayerModules
T13701
T14697
-------------------------
- - - - -
6629f1c5 by Ben Gamari at 2023-05-30T17:08:20-04:00
Move via-C flags into GHC
These were previously hardcoded in configure (with no option for
overriding them) and simply passed onto ghc through the settings file.
Since configure already guarantees gcc supports those flags, we simply
move them into GHC.
- - - - -
981e5e11 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Allow CPR on unrestricted constructors
Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will allow CPR to handle `Ur`, in
particular.
- - - - -
bf9344d2 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00
Push coercions across multiplicity boundaries
Per the new `Note [Linting linearity]`, we want optimisations over
trying to preserve linearity. This will avoid preventing inlinings and
reductions and make linear programs more efficient.
- - - - -
d56dd695 by sheaf at 2023-05-31T11:37:12-04:00
Data.Bag: add INLINEABLE to polymorphic functions
This commit allows polymorphic methods in GHC.Data.Bag to be
specialised, avoiding having to pass explicit dictionaries when they
are instantiated with e.g. a known monad.
- - - - -
5366cd35 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcBinderStack into its own module
This commit splits off TcBinderStack into its own module,
to avoid module cycles: we might want to refer to it without also
pulling in the TcM monad.
- - - - -
09d4d307 by sheaf at 2023-05-31T11:37:12-04:00
Split off TcRef into its own module
This helps avoid pull in the full TcM monad when we just want access
to mutable references in the typechecker. This facilitates later patches
which introduce a slimmed down TcM monad for zonking.
- - - - -
88cc19b3 by sheaf at 2023-05-31T11:37:12-04:00
Introduce Codensity monad
The Codensity monad is useful to write state-passing computations in
continuation-passing style, e.g. to implement a State monad as
continuation-passing style over a Reader monad.
- - - - -
f62d8195 by sheaf at 2023-05-31T11:37:12-04:00
Restructure the zonker
This commit splits up the zonker into a few separate components, described
in Note [The structure of the zonker] in `GHC.Tc.Zonk.Type`.
1. `GHC.Tc.Zonk.Monad` introduces a pared-down `TcM` monad, `ZonkM`,
which has enough information for zonking types.
This allows us to refactor `ErrCtxt` to use `ZonkM` instead of `TcM`,
which guarantees we don't throw an error while reporting an error.
2. `GHC.Tc.Zonk.Env` is the new home of `ZonkEnv`, and also defines
two zonking monad transformers, `ZonkT` and `ZonkBndrT`.
`ZonkT` is a reader monad transformer over `ZonkEnv`.
`ZonkBndrT m` is the codensity monad over `ZonkT m`.
`ZonkBndrT` is used for computations that accumulate binders
in the `ZonkEnv`.
3. `GHC.Tc.Zonk.TcType` contains the code for zonking types, for use
in the typechecker. It uses the `ZonkM` monad.
4. `GHC.Tc.Zonk.Type` contains the code for final zonking to `Type`,
which has been refactored to use `ZonkTcM = ZonkT TcM` and
`ZonkBndrTcM = ZonkBndrT TcM`.
Allocations slightly decrease on the whole due to using
continuation-passing style instead of manual state passing of ZonkEnv
in the final zonking to Type.
-------------------------
Metric Decrease:
T4029
T8095
T14766
T15304
hard_hole_fits
RecordUpdPerf
Metric Increase:
T10421
-------------------------
- - - - -
70526f5b by mimi.vx at 2023-05-31T11:37:53-04:00
Update rdt-theme to latest upstream version
Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/23444
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f3556d6c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Restructure IPE buffer layout
Reference ticket #21766
This commit restructures IPE buffer list entries to not contain
references to their corresponding info tables. IPE buffer list nodes now
point to two lists of equal length, one holding the list of info table
pointers and one holding the corresponding entries for each info table.
This will allow the entry data to be compressed without losing the
references to the info tables.
- - - - -
5d1f2411 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE compression to configure
Reference ticket #21766
Adds an `--enable-ipe-data-compreesion` flag to the configure script
which will check for libzstd and set the appropriate flags to allow for
IPE data compression in the compiler
- - - - -
b7a640ac by Finley McIlwaine at 2023-06-01T04:53:12-04:00
IPE data compression
Reference ticket #21766
When IPE data compression is enabled, compress the emitted IPE buffer
entries and decompress them in the RTS.
- - - - -
5aef5658 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix libzstd detection in configure and RTS
Ensure that `HAVE_LIBZSTD` gets defined to either 0 or 1 in all cases
and properly check that before IPE data decompression in the RTS. See
ticket #21766.
- - - - -
69563c97 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add note describing IPE data compression
See ticket #21766
- - - - -
7872e2b6 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix byte order of IPE data, fix IPE tests
Make sure byte order of written IPE buffer entries matches target.
Make sure the IPE-related tests properly access the fields of IPE buffer
entry nodes with the new IPE layout.
This commit also introduces checks to avoid importing modules if IPE
compression is not enabled.
See ticket #21766.
- - - - -
0e85099b by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Fix IPE data decompression buffer allocation
Capacity of buffers allocated for decompressed IPE data was
incorrect due to a misuse of the `ZSTD_findFrameCompressedSize`
function. Fix by always storing decompressed size of IPE data in IPE
buffer list nodes and using `ZSTD_findFrameCompressedSize` to determine
the size of the compressed data.
See ticket #21766
- - - - -
a0048866 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add optional dependencies to ./configure output
Changes the configure script to indicate whether libnuma, libzstd, or
libdw are being used as dependencies due to their optional features
being enabled.
- - - - -
09d93bd0 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Add IPE-enabled builds to CI
- Adds an IPE job to the CI pipeline which is triggered by the ~IPE label
- Introduces CI logic to enable IPE data compression
- Enables uncompressed IPE data on debug CI job
- Regenerates jobs.yaml
MR https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/112 on the
images repository is meant to ensure that the proper images have
libzstd-dev installed.
- - - - -
3ded9a1c by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Update user's guide and release notes, small fixes
Add mention of IPE data compression to user's guide and the release
notes for 9.8.1. Also note the impact compression has on binary size in
both places.
Change IpeBufferListNode compression check so only the value `1`
indicates compression.
See ticket #21766
- - - - -
41b41577 by Finley McIlwaine at 2023-06-01T04:53:12-04:00
Remove IPE enabled builds from CI
We don't need to explicitly specify the +ipe transformer to test IPE data
since there are tests which manually enable IPE information. This commit does
leave zstd IPE data compression enabled on the debian CI jobs.
- - - - -
982bef3a by Krzysztof Gogolewski at 2023-06-01T04:53:49-04:00
Fix build with 9.2
GHC.Tc.Zonk.Type uses an equality constraint.
ghc.nix currently provides 9.2.
- - - - -
1c96bc3d by Krzysztof Gogolewski at 2023-06-01T10:56:11-04:00
Output Lint errors to stderr instead of stdout
This is a continuation of 7b095b99, which fixed warnings but not errors.
Refs #13342
- - - - -
8e81f140 by sheaf at 2023-06-01T10:56:51-04:00
Refactor lookupExactOrOrig & friends
This refactors the panoply of renamer lookup functions relating to
lookupExactOrOrig to more graciously handle Exact and Orig names.
In particular, we avoid the situation in which we would add Exact/Orig
GREs to the tcg_used_gres field, which could cause a panic in bestImport
like in #23240.
Fixes #23428
- - - - -
5d415bfd by Krzysztof Gogolewski at 2023-06-01T10:57:31-04:00
Use the one-shot trick for UM and RewriteM functors
As described in Note [The one-shot state monad trick],
we shouldn't use derived Functor instances for monads using
one-shot. This was done for most of them, but UM and RewriteM
were missed.
- - - - -
2c38551e by Krzysztof Gogolewski at 2023-06-01T10:58:08-04:00
Fix testsuite skipping Lint
setTestOpts() is used to modify the test options for an entire .T file,
rather than a single test.
If there was a test using collect_compiler_stats, all of the tests
in the same file had lint disabled.
Fixes #21247
- - - - -
00a1e50b by Krzysztof Gogolewski at 2023-06-01T10:58:44-04:00
Add testcases for already fixed #16432
They were fixed by 40c7daed0.
Fixes #16432
- - - - -
f6e060cc by Krzysztof Gogolewski at 2023-06-02T09:07:25-04:00
cleanup: Remove unused field from SelfBoot
It is no longer needed since Note [Extra dependencies from .hs-boot files]
was deleted in 6998772043.
I've also added tildes to Note headers, otherwise they're not detected
by the linter.
- - - - -
82eacab6 by sheaf at 2023-06-02T09:08:01-04:00
Delete GHC.Tc.Utils.Zonk
This module was split up into GHC.Tc.Zonk.Type and GHC.Tc.Zonk.TcType
in commit f62d8195, but I forgot to delete the original module
- - - - -
4a4eb761 by Ben Gamari at 2023-06-02T23:53:21-04:00
base: Add build-order import of GHC.Types in GHC.IO.Handle.Types
For reasons similar to those described in Note [Depend on
GHC.Num.Integer].
Fixes #23411.
- - - - -
f53ac0ae by Sylvain Henry at 2023-06-02T23:54:01-04:00
JS: fix and enhance non-minimized code generation (#22455)
Flag -ddisable-js-minimizer was producing invalid code. Fix that and
also a few other things to generate nicer JS code for debugging.
The added test checks that we don't regress when using the flag.
- - - - -
f7744e8e by Andrey Mokhov at 2023-06-03T16:49:44-04:00
[hadrian] Fix multiline synopsis rendering
- - - - -
b2c745db by Bodigrim at 2023-06-03T16:50:23-04:00
Elaborate on performance properties of Data.List.++
- - - - -
7cd8a61e by Matthew Pickering at 2023-06-05T11:46:23+01:00
Big TcLclEnv and CtLoc refactoring
The overall goal of this refactoring is to reduce the dependency
footprint of the parser and syntax tree. Good reasons include:
- Better module graph parallelisability
- Make it easier to migrate error messages without introducing module loops
- Philosophically, there's not reason for the AST to depend on half the
compiler.
One of the key edges which added this dependency was
> GHC.Hs.Expr -> GHC.Tc.Types (TcLclEnv)
As this in turn depending on TcM which depends on HscEnv and so on.
Therefore the goal of this patch is to move `TcLclEnv` out of
`GHC.Tc.Types` so that `GHC.Hs.Expr` can import TcLclEnv without
incurring a huge dependency chain.
The changes in this patch are:
* Move TcLclEnv from GHC.Tc.Types to GHC.Tc.Types.LclEnv
* Create new smaller modules for the types used in TcLclEnv
New Modules:
- GHC.Tc.Types.ErrCtxt
- GHC.Tc.Types.BasicTypes
- GHC.Tc.Types.TH
- GHC.Tc.Types.LclEnv
- GHC.Tc.Types.CtLocEnv
- GHC.Tc.Errors.Types.PromotionErr
Removed Boot File:
- {-# SOURCE #-} GHC.Tc.Types
* Introduce TcLclCtxt, the part of the TcLclEnv which doesn't
participate in restoreLclEnv.
* Replace TcLclEnv in CtLoc with specific CtLocEnv which is defined in
GHC.Tc.Types.CtLocEnv. Use CtLocEnv in Implic and CtLoc to record the
location of the implication and constraint.
By splitting up TcLclEnv from GHC.Tc.Types we allow GHC.Hs.Expr to no
longer depend on the TcM monad and all that entails.
Fixes #23389 #23409
- - - - -
3d8d39d1 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Utils.TcType on GHC.Driver.Session
This removes the usage of DynFlags from Tc.Utils.TcType so that it no
longer depends on GHC.Driver.Session. In general we don't want anything
which is a dependency of Language.Haskell.Syntax to depend on
GHC.Driver.Session and removing this edge gets us closer to that goal.
- - - - -
18db5ada by Matthew Pickering at 2023-06-05T11:46:23+01:00
Move isIrrefutableHsPat to GHC.Rename.Utils and rename to isIrrefutableHsPatRn
This removes edge from GHC.Hs.Pat to GHC.Driver.Session, which makes
Language.Haskell.Syntax end up depending on GHC.Driver.Session.
- - - - -
12919dd5 by Matthew Pickering at 2023-06-05T11:46:23+01:00
Remove dependency of GHC.Tc.Types.Constraint on GHC.Driver.Session
- - - - -
eb852371 by Matthew Pickering at 2023-06-05T11:46:24+01:00
hole fit plugins: Split definition into own module
The hole fit plugins are defined in terms of TcM, a type we want to
avoid depending on from `GHC.Tc.Errors.Types`. By moving it into its own
module we can remove this dependency. It also simplifies the necessary
boot file.
- - - - -
9e5246d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Move GHC.Core.Opt.CallerCC Types into separate module
This allows `GHC.Driver.DynFlags` to depend on these types without
depending on CoreM and hence the entire simplifier pipeline.
We can also remove a hs-boot file with this change.
- - - - -
52d6a7d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00
Remove unecessary SOURCE import
- - - - -
698d160c by Matthew Pickering at 2023-06-05T11:46:24+01:00
testsuite: Accept new output for CountDepsAst and CountDepsParser tests
These are in a separate commit as the improvement to these tests is the
cumulative effect of the previous set of patches rather than just the
responsibility of the last one in the patchset.
- - - - -
58ccf02e by sheaf at 2023-06-05T16:00:47-04:00
TTG: only allow VarBind at GhcTc
The VarBind constructor of HsBind is only used at the GhcTc stage.
This commit makes that explicit by setting the extension field of
VarBind to be DataConCantHappen at all other stages.
This allows us to delete a dead code path in GHC.HsToCore.Quote.rep_bind,
and remove some panics.
- - - - -
54b83253 by Matthew Craven at 2023-06-06T12:59:25-04:00
Generate Addr# access ops programmatically
The existing utils/genprimopcode/gen_bytearray_ops.py was
relocated and extended for this purpose. Additionally, hadrian
now knows about this script and uses it when generating primops.txt
- - - - -
ecadbc7e by Matthew Pickering at 2023-06-06T13:00:01-04:00
ghcup-metadata: Only add Nightly tag when replacing LatestNightly
Previously we were always adding the Nightly tag, but this led to all
the previous builds getting an increasing number of nightly tags over
time. Now we just add it once, when we remove the LatestNightly tag.
- - - - -
4aea0a72 by Vladislav Zavialov at 2023-06-07T12:06:46+02:00
Invisible binders in type declarations (#22560)
This patch implements @k-binders introduced in GHC Proposal #425
and guarded behind the TypeAbstractions extension:
type D :: forall k j. k -> j -> Type
data D @k @j a b = ...
^^ ^^
To represent the new syntax, we modify LHsQTyVars as follows:
- hsq_explicit :: [LHsTyVarBndr () pass]
+ hsq_explicit :: [LHsTyVarBndr (HsBndrVis pass) pass]
HsBndrVis is a new data type that records the distinction between
type variable binders written with and without the @ sign:
data HsBndrVis pass
= HsBndrRequired
| HsBndrInvisible (LHsToken "@" pass)
The rest of the patch updates GHC, template-haskell, and haddock
to handle the new syntax.
Parser:
The PsErrUnexpectedTypeAppInDecl error message is removed.
The syntax it used to reject is now permitted.
Renamer:
The @ sign does not affect the scope of a binder, so the changes to
the renamer are minimal. See rnLHsTyVarBndrVisFlag.
Type checker:
There are three code paths that were updated to deal with the newly
introduced invisible type variable binders:
1. checking SAKS: see kcCheckDeclHeader_sig, matchUpSigWithDecl
2. checking CUSK: see kcCheckDeclHeader_cusk
3. inference: see kcInferDeclHeader, rejectInvisibleBinders
Helper functions bindExplicitTKBndrs_Q_Skol and bindExplicitTKBndrs_Q_Tv
are generalized to work with HsBndrVis.
Updates the haddock submodule.
Metric Increase:
MultiLayerModulesTH_OneShot
Co-authored-by: Simon Peyton Jones <simon.peytonjones at gmail.com>
- - - - -
b7600997 by Josh Meredith at 2023-06-07T13:10:21-04:00
JS: clean up FFI 'fat arrow' calls in base:System.Posix.Internals (#23481)
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e5d3940d by Sebastian Graf at 2023-06-07T18:01:28-04:00
Update CODEOWNERS
- - - - -
960ef111 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Remove IPE enabled builds from CI"
This reverts commit 41b41577c8a28c236fa37e8f73aa1c6dc368d951.
- - - - -
bad1c8cc by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Update user's guide and release notes, small fixes"
This reverts commit 3ded9a1cd22f9083f31bc2f37ee1b37f9d25dab7.
- - - - -
12726d90 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE-enabled builds to CI"
This reverts commit 09d93bd0305b0f73422ce7edb67168c71d32c15f.
- - - - -
dbdd989d by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add optional dependencies to ./configure output"
This reverts commit a00488665cd890a26a5564a64ba23ff12c9bec58.
- - - - -
240483af by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix IPE data decompression buffer allocation"
This reverts commit 0e85099b9316ee24565084d5586bb7290669b43a.
- - - - -
9b8c7dd8 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix byte order of IPE data, fix IPE tests"
This reverts commit 7872e2b6f08ea40d19a251c4822a384d0b397327.
- - - - -
3364379b by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add note describing IPE data compression"
This reverts commit 69563c97396b8fde91678fae7d2feafb7ab9a8b0.
- - - - -
fda30670 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Fix libzstd detection in configure and RTS"
This reverts commit 5aef5658ad5fb96bac7719710e0ea008bf7b62e0.
- - - - -
1cbcda9a by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "IPE data compression"
This reverts commit b7a640acf7adc2880e5600d69bcf2918fee85553.
- - - - -
fb5e99aa by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Add IPE compression to configure"
This reverts commit 5d1f2411f4becea8650d12d168e989241edee186.
- - - - -
2cdcb3a5 by Matthew Pickering at 2023-06-07T18:02:04-04:00
Revert "Restructure IPE buffer layout"
This reverts commit f3556d6cefd3d923b36bfcda0c8185abb1d11a91.
- - - - -
2b0c9f5e by Simon Peyton Jones at 2023-06-08T07:52:34+00:00
Don't report redundant Givens from quantified constraints
This fixes #23323
See (RC4) in Note [Tracking redundant constraints]
- - - - -
567b32e1 by David Binder at 2023-06-08T18:41:29-04:00
Update the outdated instructions in HACKING.md on how to compile GHC
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2b1a4abe by Ryan Scott at 2023-06-09T07:56:58-04:00
Restore mingwex dependency on Windows
This partially reverts some of the changes in !9475 to make `base` and
`ghc-prim` depend on the `mingwex` library on Windows. It also restores the
RTS's stubs for `mingwex`-specific symbols such as `_lock_file`.
This is done because the C runtime provides `libmingwex` nowadays, and
moreoever, not linking against `mingwex` requires downstream users to link
against it explicitly in difficult-to-predict circumstances. Better to always
link against `mingwex` and prevent users from having to do the guesswork
themselves.
See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10360#note_495873 for
the discussion that led to this.
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28954758 by Ryan Scott at 2023-06-09T07:56:58-04:00
RtsSymbols.c: Remove mingwex symbol stubs
As of !9475, the RTS now links against `ucrt` instead of `msvcrt` on Windows,
which means that the RTS no longer needs to declare stubs for the `__mingw_*`
family of symbols. Let's remove these stubs to avoid confusion.
Fixes #23309.
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3ab0155b by Ryan Scott at 2023-06-09T07:57:35-04:00
Consistently use validity checks for TH conversion of data constructors
We were checking that TH-spliced data declarations do not look like this:
```hs
data D :: Type = MkD Int
```
But we were only doing so for `data` declarations' data constructors, not for
`newtype`s, `data instance`s, or `newtype instance`s. This patch factors out
the necessary validity checks into its own `cvtDataDefnCons` function and uses
it in all of the places where it needs to be.
Fixes #22559.
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a24b83dd by Matthew Pickering at 2023-06-09T15:19:00-04:00
Fix behaviour of -keep-tmp-files when used in OPTIONS_GHC pragma
This fixes the behaviour of -keep-tmp-files when used in an OPTIONS_GHC
pragma for files with module level scope.
Instead of simple not deleting the files, we also need to remove them
from the TmpFs so they are not deleted later on when all the other files
are deleted.
There are additional complications because you also need to remove the
directory where these files live from the TmpFs so we don't try to
delete those later either.
I added two tests.
1. Tests simply that -keep-tmp-files works at all with a single module
and --make mode.
2. The other tests that temporary files are deleted for other modules
which don't enable -keep-tmp-files.
Fixes #23339
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dcf32882 by Matthew Pickering at 2023-06-09T15:19:00-04:00
withDeferredDiagnostics: When debugIsOn, write landmine into IORef to catch use-after-free.
Ticket #23305 reports an error where we were attempting to use the
logger which was created by withDeferredDiagnostics after its scope had
ended.
This problem would have been caught by this patch and a validate build:
```
+*** Exception: Use after free
+CallStack (from HasCallStack):
+ error, called at compiler/GHC/Driver/Make.hs:<line>:<column> in <package-id>:GHC.Driver.Make
```
This general issue is tracked by #20981
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432c736c by Matthew Pickering at 2023-06-09T15:19:00-04:00
Don't return complete HscEnv from upsweep
By returning a complete HscEnv from upsweep the logger (as introduced by
withDeferredDiagnostics) was escaping the scope of
withDeferredDiagnostics and hence we were losing error messages.
This is reminiscent of #20981, which also talks about writing errors
into messages after their scope has ended.
See #23305 for details.
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26013cdc by Alexander McKenna at 2023-06-09T15:19:41-04:00
Dump `SpecConstr` specialisations separately
Introduce a `-ddump-spec-constr` flag which debugs specialisations from
`SpecConstr`. These are no longer shown when you use `-ddump-spec`.
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4639100b by Matthew Pickering at 2023-06-09T18:50:43-04:00
Add role annotations to SNat, SSymbol and SChar
Ticket #23454 explained it was possible to implement unsafeCoerce
because SNat was lacking a role annotation.
As these are supposed to be singleton types but backed by an efficient
representation the correct annotation is nominal to ensure these kinds
of coerces are forbidden.
These annotations were missed from https://github.com/haskell/core-libraries-committee/issues/85
which was implemented in 532de36870ed9e880d5f146a478453701e9db25d.
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/170
Fixes #23454
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9c0dcff7 by Matthew Pickering at 2023-06-09T18:51:19-04:00
Remove non-existant bytearray-ops.txt.pp file from ghc.cabal.in
This broke the sdist generation.
Fixes #23489
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273ff0c7 by David Binder at 2023-06-09T18:52:00-04:00
Regression test T13438 is no longer marked as "expect_broken" in the testsuite driver.
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b84a2900 by Andrei Borzenkov at 2023-06-10T08:27:28-04:00
Fix -Wterm-variable-capture scope (#23434)
-Wterm-variable-capture wasn't accordant with type variable
scoping in associated types, in type classes. For example,
this code produced the warning:
k = 12
class C k a where
type AT a :: k -> Type
I solved this issue by reusing machinery of newTyVarNameRn function
that is accordand with associated types: it does lookup for each free type
variable when we are in the type class context. And in this patch I
use result of this work to make sure that -Wterm-variable-capture warns
only on implicitly quantified type variables.
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9d1a8d87 by Jorge Mendes at 2023-06-10T08:28:10-04:00
Remove redundant case statement in rts/js/mem.js.
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a1f350e2 by Oleg Grenrus at 2023-06-13T09:42:16-04:00
Change WarningWithFlag to plural WarningWithFlags
Resolves #22825
Now each diagnostic can name multiple different warning flags for its reason.
There is currently one use case: missing signatures.
Currently we need to check which warning flags are enabled when
generating the diagnostic, which is against the declarative nature of
the diagnostic framework.
This patch allows a warning diagnostic to have multiple warning flags,
which makes setup more declarative.
The WarningWithFlag pattern synonym is added for backwards compatibility
The 'msgEnvReason' field is added to MsgEnvelope to store the
`ResolvedDiagnosticReason`, which accounts for the enabled flags, and
then that is used for pretty printing the diagnostic.
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ec01f0ec by Matthew Pickering at 2023-06-13T09:42:59-04:00
Add a test Way for running ghci with Core optimizations
Tracking ticket: #23059
This runs compile_and_run tests with optimised code with bytecode
interpreter
Changed submodules: hpc, process
Co-authored-by: Torsten Schmits <git at tryp.io>
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c6741e72 by Rodrigo Mesquita at 2023-06-13T09:43:38-04:00
Configure -Qunused-arguments instead of hardcoding it
When GHC invokes clang, it currently passes -Qunused-arguments to
discard warnings resulting from GHC using multiple options that aren't
used.
In this commit, we configure -Qunused-arguments into the Cc options
instead of checking if the compiler is clang at runtime and hardcoding
the flag into GHC.
This is part of the effort to centralise toolchain information in
toolchain target files at configure time with the end goal of a runtime
retargetable GHC.
This also means we don't need to call getCompilerInfo ever, which
improves performance considerably (see !10589).
Metric Decrease:
PmSeriesG
T10421
T11303b
T12150
T12227
T12234
T12425
T13035
T13253-spj
T13386
T15703
T16875
T17836b
T17977
T17977b
T18140
T18282
T18304
T18698a
T18698b
T18923
T20049
T21839c
T3064
T5030
T5321FD
T5321Fun
T5837
T6048
T9020
T9198
T9872d
T9961
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0128db87 by Victor Cacciari Miraldo at 2023-06-13T09:44:18-04:00
Improve docs for Data.Fixed; adds 'realToFrac' as an option for conversion
between different precisions.
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95b69cfb by Ryan Scott at 2023-06-13T09:44:55-04:00
Add regression test for #23143
!10541, the fix for #23323, also fixes #23143. Let's add a regression test to
ensure that it stays fixed.
Fixes #23143.
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ed2dbdca by Emily Martins at 2023-06-13T09:45:37-04:00
delete GHCi.UI.Tags module and remove remaining references
Co-authored-by: Tilde Rose <t1lde at protonmail.com>
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c90d96e4 by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00
Add regression test for 17328
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de58080c by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00
Skip checking whether constructors are in scope when deriving
newtype instances.
Fixes #17328
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5e3c2b05 by Philip Hazelden at 2023-06-13T09:47:07-04:00
Don't suggest `DeriveAnyClass` when instance can't be derived.
Fixes #19692.
Prototypical cases:
class C1 a where
x1 :: a -> Int
data G1 = G1 deriving C1
class C2 a where
x2 :: a -> Int
x2 _ = 0
data G2 = G2 deriving C2
Both of these used to give this suggestion, but for C1 the suggestion
would have failed (generated code with undefined methods, which compiles
but warns). Now C2 still gives the suggestion but C1 doesn't.
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80a0b099 by David Binder at 2023-06-13T09:47:49-04:00
Add testcase for error GHC-00711 to testsuite
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e4b33a1d by Oleg Grenrus at 2023-06-14T07:01:21-04:00
Add -Wmissing-poly-kind-signatures
Implements #22826
This is a restricted version of -Wmissing-kind-signatures shown only for polykinded types.
- - - - -
f8395b94 by doyougnu at 2023-06-14T07:02:01-04:00
ci: special case in req_host_target_ghc for JS
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b852a5b6 by Gergo ERDI at 2023-06-14T07:02:42-04:00
When forcing a `ModIface`, force the `MINIMAL` pragmas in class definitions
Fixes #23486
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c29b45ee by Krzysztof Gogolewski at 2023-06-14T07:03:19-04:00
Add a testcase for #20076
Remove 'recursive' in the error message, since the error
can arise without recursion.
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b80ef202 by Krzysztof Gogolewski at 2023-06-14T07:03:56-04:00
Use tcInferFRR to prevent bad generalisation
Fixes #23176
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bd8ef37d by Matthew Pickering at 2023-06-14T07:04:31-04:00
ci: Add dependenices on necessary aarch64 jobs for head.hackage ci
These need to be added since we started testing aarch64 on head.hackage
CI. The jobs will sometimes fail because they will start before the
relevant aarch64 job has finished.
Fixes #23511
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a0c27cee by Vladislav Zavialov at 2023-06-14T07:05:08-04:00
Add standalone kind signatures for Code and TExp
CodeQ and TExpQ already had standalone kind signatures
even before this change:
type TExpQ :: TYPE r -> Kind.Type
type CodeQ :: TYPE r -> Kind.Type
Now Code and TExp have signatures too:
type TExp :: TYPE r -> Kind.Type
type Code :: (Kind.Type -> Kind.Type) -> TYPE r -> Kind.Type
This is a stylistic change.
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e70c1245 by Tom Ellis at 2023-06-14T07:05:48-04:00
Warn that GHC.TypeLits.Internal should not be used
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100650e3 by Tom Ellis at 2023-06-14T07:05:48-04:00
Warn that GHC.TypeNats.Internal should not be used
- - - - -
078250ef by Jacco Krijnen at 2023-06-14T17:17:53-04:00
Add more flags for dumping core passes (#23491)
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1b7604af by Jacco Krijnen at 2023-06-14T17:17:53-04:00
Add tests for dumping flags (#23491)
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42000000 by Sebastian Graf at 2023-06-14T17:18:29-04:00
Provide a demand signature for atomicModifyMutVar.# (#23047)
Fixes #23047
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8f27023b by Ben Gamari at 2023-06-15T03:10:24-04:00
compiler: Cross-reference Note [StgToJS design]
In particular, the numeric representations are quite useful context in a
few places.
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a71b60e9 by Andrei Borzenkov at 2023-06-15T03:11:00-04:00
Implement the -Wimplicit-rhs-quantification warning (#23510)
GHC Proposal #425 "Invisible binders in type declarations" forbids
implicit quantification of type variables that occur free on the
right-hand side of a type synonym but are not mentioned on the left-hand side.
The users are expected to rewrite this using invisible binders:
type T1 :: forall a . Maybe a
type T1 = 'Nothing :: Maybe a -- old
type T1 @a = 'Nothing :: Maybe a -- new
Since the @k-binders are a new feature, we need to wait for three releases
before we require the use of the new syntax. In the meantime, we ought to
provide users with a new warning, -Wimplicit-rhs-quantification, that would
detect when such implicit quantification takes place, and include it in -Wcompat.
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0078dd00 by Sven Tennie at 2023-06-15T03:11:36-04:00
Minor refactorings to mkSpillInstr and mkLoadInstr
Better error messages. And, use the existing `off` constant to reduce
duplication.
- - - - -
1792b57a by doyougnu at 2023-06-15T03:12:17-04:00
JS: merge util modules
Merge Core and StgUtil modules for StgToJS pass.
Closes: #23473
- - - - -
469ff08b by Vladislav Zavialov at 2023-06-15T03:12:57-04:00
Check visibility of nested foralls in can_eq_nc (#18863)
Prior to this change, `can_eq_nc` checked the visibility of the
outermost layer of foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
Then it delegated the rest of the work to `can_eq_nc_forall`, which
split off all foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
This meant that some visibility flags were completely ignored.
We fix this oversight by moving the check to `can_eq_nc_forall`.
- - - - -
59c9065b by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: use regular mask for blocking IO
Blocking IO used uninterruptibleMask which should make any thread
blocked on IO unreachable by async exceptions (such as those from
timeout). This changes it to a regular mask.
It's important to note that the nodejs runtime does not actually
interrupt the blocking IO when the Haskell thread receives an
async exception, and that file positions may be updated and buffers
may be written after the Haskell thread has already resumed.
Any file descriptor affected by an async exception interruption
should therefore be used with caution.
- - - - -
907c06c3 by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: nodejs: do not set 'readable' handler on stdin at startup
The Haskell runtime used to install a 'readable' handler on stdin
at startup in nodejs. This would cause the nodejs system to start
buffering the stream, causing data loss if the stdin file
descriptor is passed to another process.
This change delays installation of the 'readable' handler until
the first read of stdin by Haskell code.
- - - - -
a54b40a9 by Luite Stegeman at 2023-06-15T03:13:37-04:00
JS: reserve one more virtual (negative) file descriptor
This is needed for upcoming support of the process package
- - - - -
78cd1132 by Andrei Borzenkov at 2023-06-15T11:16:11+04:00
Report scoped kind variables at the type-checking phase (#16635)
This patch modifies the renamer to respect ScopedTypeVariables in kind
signatures. This means that kind variables bound by the outermost
`forall` now scope over the type:
type F = '[Right @a @() () :: forall a. Either a ()]
-- ^^^^^^^^^^^^^^^ ^^^
-- in scope here bound here
However, any use of such variables is a type error, because we don't
have type-level lambdas to bind them in Core. This is described in the
new Note [Type variable scoping errors during type check] in GHC.Tc.Types.
- - - - -
4a41ba75 by Sylvain Henry at 2023-06-15T18:09:15-04:00
JS: testsuite: use correct ticket number
Replace #22356 with #22349 for these tests because #22356 has been fixed
but now these tests fail because of #22349.
- - - - -
15f150c8 by Sylvain Henry at 2023-06-15T18:09:16-04:00
JS: testsuite: update ticket numbers
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08d8e9ef by Sylvain Henry at 2023-06-15T18:09:16-04:00
JS: more triage
- - - - -
e8752e12 by Krzysztof Gogolewski at 2023-06-15T18:09:52-04:00
Fix test T18522-deb-ppr
Fixes #23509
- - - - -
62c56416 by Ben Price at 2023-06-16T05:52:39-04:00
Lint: more details on "Occurrence is GlobalId, but binding is LocalId"
This is helpful when debugging a pass which accidentally shadowed a
binder.
- - - - -
d4c10238 by Ryan Hendrickson at 2023-06-16T05:53:22-04:00
Clean a stray bit of text in user guide
- - - - -
93647b5c by Vladislav Zavialov at 2023-06-16T05:54:02-04:00
testsuite: Add forall visibility test cases
The added tests ensure that the type checker does not confuse
visible and invisible foralls.
VisFlag1: kind-checking type applications and inferred type variable instantiations
VisFlag1_ql: kind-checking Quick Look instantiations
VisFlag2: kind-checking type family instances
VisFlag3: checking kind annotations on type parameters of associated type families
VisFlag4: checking kind annotations on type parameters in type declarations with SAKS
VisFlag5: checking the result kind annotation of data family instances
- - - - -
a5f0c00e by Sylvain Henry at 2023-06-16T12:25:40-04:00
JS: factorize SaneDouble into its own module
Follow-up of b159e0e9 whose ticket is #22736
- - - - -
0baf9e7c by Krzysztof Gogolewski at 2023-06-16T12:26:17-04:00
Add tests for #21973
- - - - -
640ea90e by Diego Diverio at 2023-06-16T23:07:55-04:00
Update documentation for `<**>`
- - - - -
2469a813 by Diego Diverio at 2023-06-16T23:07:55-04:00
Update text
- - - - -
1f515bbb by Diego Diverio at 2023-06-16T23:07:55-04:00
Update examples
- - - - -
7af99a0d by Diego Diverio at 2023-06-16T23:07:55-04:00
Update documentation to actually display code correctly
- - - - -
800aad7e by Andrei Borzenkov at 2023-06-16T23:08:32-04:00
Type/data instances: require that variables on the RHS are mentioned on the LHS (#23512)
GHC Proposal #425 "Invisible binders in type declarations" restricts the
scope of type and data family instances as follows:
In type family and data family instances, require that every variable
mentioned on the RHS must also occur on the LHS.
For example, here are three equivalent type instance definitions accepted before this patch:
type family F1 a :: k
type instance F1 Int = Any :: j -> j
type family F2 a :: k
type instance F2 @(j -> j) Int = Any :: j -> j
type family F3 a :: k
type instance forall j. F3 Int = Any :: j -> j
- In F1, j is implicitly quantified and it occurs only on the RHS;
- In F2, j is implicitly quantified and it occurs both on the LHS and the RHS;
- In F3, j is explicitly quantified.
Now F1 is rejected with an out-of-scope error, while F2 and F3 continue to be accepted.
- - - - -
9132d529 by Sylvain Henry at 2023-06-18T02:50:34-04:00
JS: testsuite: use correct ticket numbers
- - - - -
c3a1274c by Sylvain Henry at 2023-06-18T02:50:34-04:00
JS: don't dump eventlog to stderr by default
Fix T16707
Bump stm submodule
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89bb8ad8 by Ryan Hendrickson at 2023-06-18T02:51:14-04:00
Fix TH name lookup for symbolic tycons (#23525)
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cb9e1ce4 by Finley McIlwaine at 2023-06-18T21:16:45-06:00
IPE data compression
IPE data resulting from the `-finfo-table-map` flag may now be
compressed by configuring the GHC build with the
`--enable-ipe-data-compression` flag. This results in about a 20%
reduction in the size of IPE-enabled build results.
The compression library, zstd, may optionally be statically linked by
configuring with the `--enabled-static-libzstd` flag (on non-darwin
platforms)
libzstd version 1.4.0 or greater is required.
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0cbc3ae0 by Gergő Érdi at 2023-06-19T09:11:38-04:00
Add `IfaceWarnings` to represent the `ModIface`-storable parts
of a `Warnings GhcRn`.
Fixes #23516
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3e80c2b4 by Arnaud Spiwack at 2023-06-20T03:19:41-04:00
Avoid desugaring non-recursive lets into recursive lets
This prepares for having linear let expressions in the frontend.
When desugaring lets, SPECIALISE statements create more copies of a
let binding. Because of the rewrite rules attached to the bindings,
there are dependencies between the generated binds.
Before this commit, we simply wrapped all these in a mutually
recursive let block, and left it to the simplified to sort it out.
With this commit: we are careful to generate the bindings in
dependency order, so that we can wrap them in consecutive lets (if the
source is non-recursive).
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9fad49e0 by Ben Gamari at 2023-06-20T03:20:19-04:00
rts: Do not call exit() from SIGINT handler
Previously `shutdown_handler` would call `stg_exit` if the scheduler was
Oalready found to be in `SCHED_INTERRUPTING` state (or higher). However,
`stg_exit` is not signal-safe as it calls `exit` (which calls `atexit`
handlers). The only safe thing to do in this situation is to call
`_exit`, which terminates with minimal cleanup.
Fixes #23417.
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7485f848 by Bodigrim at 2023-06-20T03:20:57-04:00
Bump Cabal submodule
This requires changing the recomp007 test because now cabal passes
`this-unit-id` to executable components, and that unit-id contains a
hash which includes the ABI of the dependencies. Therefore changing the
dependencies means that -this-unit-id changes and recompilation is
triggered.
The spririt of the test is to test GHC's recompilation logic assuming
that `-this-unit-id` is constant, so we explicitly pass `-ipid` to
`./configure` rather than letting `Cabal` work it out.
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1464a2a8 by mangoiv at 2023-06-20T03:21:34-04:00
[feat] add a hint to `HasField` error message
- add a hint that indicates that the record that the record dot is used
on might just be missing a field
- as the intention of the programmer is not entirely clear, it is only
shown if the type is known
- This addresses in part issue #22382
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b65e78dd by Ben Gamari at 2023-06-20T16:56:43-04:00
rts/ipe: Fix unused lock warning
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6086effd by Ben Gamari at 2023-06-20T16:56:44-04:00
rts/ProfilerReportJson: Fix memory leak
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1e48c434 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Various warnings fixes
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471486b9 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix printf format mismatch
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80603fb3 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect #include <sys/poll.h>
According to Alpine's warnings and poll(2), <poll.h> should be
preferred.
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ff18e6fd by Ben Gamari at 2023-06-20T16:56:44-04:00
nonmoving: Fix unused definition warrnings
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6e7fe8ee by Ben Gamari at 2023-06-20T16:56:44-04:00
Disable futimens on Darwin.
See #22938
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b7706508 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect CPP guard
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94f00e9b by Ben Gamari at 2023-06-20T16:56:44-04:00
hadrian: Ensure that -Werror is passed when compiling the RTS.
Previously the `+werror` transformer would only pass `-Werror` to GHC,
which does not ensure that the same is passed to the C compiler when
building the RTS. Arguably this is itself a bug but for now we will just
work around this by passing `-optc-Werror` to GHC.
I tried to enable `-Werror` in all C compilations but the boot libraries
are something of a portability nightmare.
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5fb54bf8 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Disable `#pragma GCC`s on clang compilers
Otherwise the build fails due to warnings. See #23530.
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cf87f380 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix capitalization of prototype
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17f250d7 by Ben Gamari at 2023-06-20T16:56:44-04:00
rts: Fix incorrect format specifier
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0ff1c501 by Josh Meredith at 2023-06-20T16:57:20-04:00
JS: remove js_broken(22576) in favour of the pre-existing wordsize(32) condition (#22576)
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3d1d42b7 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Memory usage fixes for Haddock
- Do not include `mi_globals` in the `NoBackend` backend. It was only included
for Haddock, but Haddock does not actually need it. This causes a 200MB
reduction in max residency when generating haddocks on the Agda codebase
(roughly 1GB to 800MB).
- Make haddock_{parser,renamer}_perf tests more accurate by forcing docs to
be written to interface files using `-fwrite-interface`
Bumps haddock submodule.
Metric Decrease:
haddock.base
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8185b1c2 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Fix associated data family doc structure items
Associated data families were being given their own export DocStructureItems,
which resulted in them being documented separately from their classes in
haddocks. This commit fixes it.
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4d356ea3 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: implement TH support
- Add ghc-interp.js bootstrap script for the JS interpreter
- Interactively link and execute iserv code from the ghci package
- Incrementally load and run JS code for splices into the running iserv
Co-authored-by: Luite Stegeman <stegeman at gmail.com>
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3249cf12 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Don't use getKey
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f84ff161 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Stg: return imported FVs
This is used to determine what to link when using the interpreter.
For now it's only used by the JS interpreter but it could easily be used
by the native interpreter too (instead of extracting names from compiled BCOs).
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fab2ad23 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Fix some recompilation avoidance tests
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a897dc13 by Sylvain Henry at 2023-06-21T12:04:59-04:00
TH_import_loop is now broken as expected
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dbb4ad51 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: always recompile when TH is enabled (cf #23013)
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711b1d24 by Bartłomiej Cieślar at 2023-06-21T12:59:27-04:00
Add support for deprecating exported items (proposal #134)
This is an implementation of the deprecated exports proposal #134.
The proposal introduces an ability to introduce warnings to exports.
This allows for deprecating a name only when it is exported from a specific
module, rather than always depreacting its usage. In this example:
module A ({-# DEPRECATED "do not use" #-} x) where
x = undefined
---
module B where
import A(x)
`x` will emit a warning when it is explicitly imported.
Like the declaration warnings, export warnings are first accumulated within
the `Warnings` struct, then passed into the ModIface, from which they are
then looked up and warned about in the importing module in the `lookup_ie`
helpers of the `filterImports` function (for the explicitly imported names)
and in the `addUsedGRE(s)` functions where they warn about regular usages
of the imported name.
In terms of the AST information, the custom warning is stored in the
extension field of the variants of the `IE` type (see Trees that Grow for
more information).
The commit includes a bump to the haddock submodule added in MR #28
Signed-off-by: Bartłomiej Cieślar <bcieslar2001 at gmail.com>
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c1865854 by Ben Gamari at 2023-06-21T12:59:30-04:00
configure: Bump version to 9.8
Bumps Haddock submodule
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4e1de71c by Ben Gamari at 2023-06-21T21:07:48-04:00
configure: Bump version to 9.9
Bumps haddock submodule.
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5b6612bc by Ben Gamari at 2023-06-23T03:56:49-04:00
rts: Work around missing prototypes errors
Darwin's toolchain inexpliciably claims that `write_barrier` and friends
have declarations without prototypes, despite the fact that (a) they are
definitions, and (b) the prototypes appear only a few lines above. Work
around this by making the definitions proper prototypes.
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43b66a13 by Matthew Pickering at 2023-06-23T03:57:26-04:00
ghcup-metadata: Fix date modifier (M = minutes, m = month)
Fixes #23552
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564164ef by Luite Stegeman at 2023-06-24T10:27:29+09:00
Support large stack frames/offsets in GHCi bytecode interpreter
Bytecode instructions like PUSH_L (push a local variable) contain
an operand that refers to the stack slot. Before this patch, the
operand type was SmallOp (Word16), limiting the maximum stack
offset to 65535 words. This could cause compiler panics in some
cases (See #22888).
This patch changes the operand type for stack offsets from
SmallOp to Op, removing the stack offset limit.
Fixes #22888
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8d6574bc by Sylvain Henry at 2023-06-26T13:15:06-04:00
JS: support levity-polymorphic datatypes (#22360,#22291)
- thread knowledge about levity into PrimRep instead of panicking
- JS: remove assumption that unlifted heap objects are rts objects (TVar#, etc.)
Doing this also fixes #22291 (test added).
There is a small performance hit (~1% more allocations).
Metric Increase:
T18698a
T18698b
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5578bbad by Matthew Pickering at 2023-06-26T13:15:43-04:00
MR Review Template: Mention "Blocked on Review" label
In order to improve our MR review processes we now have the label
"Blocked on Review" which allows people to signal that a MR is waiting
on a review to happen.
See: https://mail.haskell.org/pipermail/ghc-devs/2023-June/021255.html
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4427e9cf by Matthew Pickering at 2023-06-26T13:15:43-04:00
Move MR template to Default.md
This makes it more obvious what you have to modify to affect the default
template rather than looking in the project settings.
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522bd584 by Arnaud Spiwack at 2023-06-26T13:16:33-04:00
Revert "Avoid desugaring non-recursive lets into recursive lets"
This (temporary) reverts commit 3e80c2b40213bebe302b1bd239af48b33f1b30ef.
Fixes #23550
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c59fbb0b by Torsten Schmits at 2023-06-26T19:34:20+02:00
Propagate breakpoint information when inlining across modules
Tracking ticket: #23394
MR: !10448
* Add constructor `IfaceBreakpoint` to `IfaceTickish`
* Store breakpoint data in interface files
* Store `BreakArray` for the breakpoint's module, not the current module, in BCOs
* Store module name in BCOs instead of `Unique`, since the `Unique` from an `Iface` doesn't match the modules in GHCi's
state
* Allocate module name in `ModBreaks`, like `BreakArray`
* Lookup breakpoint by module name in GHCi
* Skip creating breakpoint instructions when no `ModBreaks` are available, rather than injecting `ModBreaks` in the
linker when breakpoints are enabled, and panicking when `ModBreaks` is missing
- - - - -
6f904808 by Greg Steuck at 2023-06-27T16:53:07-04:00
Remove undefined FP_PROG_LD_BUILD_ID from configure.ac's
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e89aa072 by Andrei Borzenkov at 2023-06-27T16:53:44-04:00
Remove arity inference in type declarations (#23514)
Arity inference in type declarations was introduced
as a workaround for the lack of @k-binders.
They were added in 4aea0a72040, so I simplified all
of this by simply removing arity inference altogether.
This is part of GHC Proposal #425 "Invisible binders in type
declarations".
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459dee1b by Torsten Schmits at 2023-06-27T16:54:20-04:00
Relax defaulting of RuntimeRep/Levity when printing
Fixes #16468
MR: !10702
Only default RuntimeRep to LiftedRep when variables are bound by the toplevel forall
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151f8f18 by Torsten Schmits at 2023-06-27T16:54:57-04:00
Remove duplicate link label in linear types docs
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ecdc4353 by Rodrigo Mesquita at 2023-06-28T12:24:57-04:00
Stop configuring unused Ld command in `settings`
GHC has no direct dependence on the linker. Rather, we depend upon the C
compiler for linking and an object-merging program (which is typically
`ld`) for production of GHCi objects and merging of C stubs into final
object files.
Despite this, for historical reasons we still recorded information about
the linker into `settings`. Remove these entries from `settings`,
`hadrian/cfg/system.config`, as well as the `configure` logic
responsible for this information.
Closes #23566.
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bf9ec3e4 by Bryan Richter at 2023-06-28T12:25:33-04:00
Remove extraneous debug output
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7eb68dd6 by Bryan Richter at 2023-06-28T12:25:33-04:00
Work with unset vars in -e mode
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49c27936 by Bryan Richter at 2023-06-28T12:25:33-04:00
Pass positional arguments in their positions
By quoting $cmd, the default "bash -i" is a single argument to run, and
no file named "bash -i" actually exists to be run.
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887dc4fc by Bryan Richter at 2023-06-28T12:25:33-04:00
Handle unset value in -e context
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5ffc7d7b by Rodrigo Mesquita at 2023-06-28T21:07:36-04:00
Configure CPP into settings
There is a distinction to be made between the Haskell Preprocessor and
the C preprocessor. The former is used to preprocess Haskell files,
while the latter is used in C preprocessing such as Cmm files.
In practice, they are both the same program (usually the C compiler) but
invoked with different flags.
Previously we would, at configure time, configure the haskell
preprocessor and save the configuration in the settings file, but,
instead of doing the same for CPP, we had hardcoded in GHC that the CPP
program was either `cc -E` or `cpp`.
This commit fixes that asymmetry by also configuring CPP at configure
time, and tries to make more explicit the difference between HsCpp and
Cpp (see Note [Preprocessing invocations]).
Note that we don't use the standard CPP and CPPFLAGS to configure Cpp,
but instead use the non-standard --with-cpp and --with-cpp-flags.
The reason is that autoconf sets CPP to "$CC -E", whereas we expect the
CPP command to be configured as a standalone executable rather than a
command. These are symmetrical with --with-hs-cpp and
--with-hs-cpp-flags.
Cleanup: Hadrian no longer needs to pass the CPP configuration for CPP
to be C99 compatible through -optP, since we now configure that
into settings.
Closes #23422
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5efa9ca5 by Ben Gamari at 2023-06-28T21:08:13-04:00
hadrian: Always canonicalize topDirectory
Hadrian's `topDirectory` is intended to provide an absolute path to the
root of the GHC tree. However, if the tree is reached via a symlink this
One question here is whether the `canonicalizePath` call is expensive
enough to warrant caching. In a quick microbenchmark I observed that
`canonicalizePath "."` takes around 10us per call; this seems
sufficiently low not to worry.
Alternatively, another approach here would have been to rather move the
canonicalization into `m4/fp_find_root.m4`. This would have avoided
repeated canonicalization but sadly path canonicalization is a hard
problem in POSIX shell.
Addresses #22451.
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b3e1436f by aadaa_fgtaa at 2023-06-28T21:08:53-04:00
Optimise ELF linker (#23464)
- cache last elements of `relTable`, `relaTable` and `symbolTables` in `ocInit_ELF`
- cache shndx table in ObjectCode
- run `checkProddableBlock` only with debug rts
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30525b00 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Introduce MO_{ACQUIRE,RELEASE}_FENCE
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b787e259 by Ben Gamari at 2023-06-28T21:09:30-04:00
compiler: Drop MO_WriteBarrier
rts: Drop write_barrier
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7550b4a5 by Ben Gamari at 2023-06-28T21:09:30-04:00
rts: Drop load_store_barrier()
This is no longer used.
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d5f2875e by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop last instances of prim_{write,read}_barrier
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965ac2ba by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Eliminate remaining uses of load_load_barrier
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0fc5cb97 by Sven Tennie at 2023-06-28T21:09:31-04:00
compiler: Drop MO_ReadBarrier
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7a7d326c by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Drop load_load_barrier
This is no longer used.
- - - - -
9f63da66 by Sven Tennie at 2023-06-28T21:09:31-04:00
Delete write_barrier function
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bb0ed354 by Ben Gamari at 2023-06-28T21:09:31-04:00
rts: Make collectFreshWeakPtrs definition a prototype
x86-64/Darwin's toolchain inexplicably warns that collectFreshWeakPtrs
needs to be a prototype.
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ef81a1eb by Sven Tennie at 2023-06-28T21:10:08-04:00
Fix number of free double regs
D1..D4 are defined for aarch64 and thus not free.
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c335fb7c by Ryan Scott at 2023-06-28T21:10:44-04:00
Fix typechecking of promoted empty lists
The `'[]` case in `tc_infer_hs_type` is smart enough to handle arity-0 uses of
`'[]` (see the newly added `T23543` test case for an example), but the `'[]`
case in `tc_hs_type` was not. We fix this by changing the `tc_hs_type` case to
invoke `tc_infer_hs_type`, as prescribed in `Note [Future-proofing the type
checker]`.
There are some benign changes to test cases' expected output due to the new
code path using `forall a. [a]` as the kind of `'[]` rather than `[k]`.
Fixes #23543.
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fcf310e7 by Rodrigo Mesquita at 2023-06-28T21:11:21-04:00
Configure MergeObjs supports response files rather than Ld
The previous configuration script to test whether Ld supported response
files was
* Incorrect (see #23542)
* Used, in practice, to check if the *merge objects tool* supported
response files.
This commit modifies the macro to run the merge objects tool (rather
than Ld), using a response file, and checking the result with $NM
Fixes #23542
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78b2f3cc by Sylvain Henry at 2023-06-28T21:12:02-04:00
JS: fix JS stack printing (#23565)
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9f01d14b by Matthew Pickering at 2023-06-29T04:13:41-04:00
Add -fpolymorphic-specialisation flag (off by default at all optimisation levels)
Polymorphic specialisation has led to a number of hard to diagnose
incorrect runtime result bugs (see #23469, #23109, #21229, #23445) so
this commit introduces a flag `-fpolymorhphic-specialisation` which
allows users to turn on this experimental optimisation if they are
willing to buy into things going very wrong.
Ticket #23469
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b1e611d5 by Ben Gamari at 2023-06-29T04:14:17-04:00
Rip out runtime linker/compiler checks
We used to choose flags to pass to the toolchain at runtime based on the
platform running GHC, and in this commit we drop all of those runtime
linker checks
Ultimately, this represents a change in policy: We no longer adapt at
runtime to the toolchain being used, but rather make final decisions
about the toolchain used at /configure time/
(we have deleted Note [Run-time linker info] altogether!).
This works towards the goal of having all toolchain configuration logic
living in the same place, which facilities the work towards a
runtime-retargetable GHC (see #19877).
As of this commit, the runtime linker/compiler logic was moved to
autoconf, but soon it, and the rest of the existing toolchain
configuration logic, will live in the standalone ghc-toolchain program
(see !9263)
In particular, what used to be done at runtime is now as follows:
* The flags -Wl,--no-as-needed for needed shared libs are configured
into settings
* The flag -fstack-check is configured into settings
* The check for broken tables-next-to-code was outdated
* We use the configured c compiler by default as the assembler program
* We drop `asmOpts` because we already configure -Qunused-arguments flag
into settings (see !10589)
Fixes #23562
Co-author: Rodrigo Mesquita (@alt-romes)
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68e474fd by Ben Gamari at 2023-06-29T10:59:06-04:00
gitlab-ci: Refactor compilation of gen_ci
Flakify and document it, making it far less sensitive to the build
environment.
- - - - -
eddaa89c by Ben Gamari at 2023-06-29T11:10:50-04:00
Drop circle-ci-job.sh
- - - - -
9c2ba7ed by Ben Gamari at 2023-06-29T11:10:50-04:00
testsuite: Allow preservation of unexpected output
Here we introduce a new flag to the testsuite driver,
--unexpected-output-dir=<dir>, which allows the user to ask
the driver to preserve unexpected output from tests. The intent is for
this to be used in CI to allow users to more easily fix unexpected
platform-dependent output.
- - - - -
3bdc8b13 by Ben Gamari at 2023-06-29T13:58:23-04:00
gitlab-ci: Preserve unexpected output
Here we enable use of the testsuite driver's `--unexpected-output-dir`
flag by CI, preserving the result as an artifact for use by users.
- - - - -
d13f10ff by Ben Gamari at 2023-06-29T13:58:32-04:00
gitlab-ci: Preserve unexpected output
Here we enable use of the testsuite driver's `--unexpected-output-dir`
flag by CI, preserving the result as an artifact for use by users.
- - - - -
f9b38e18 by Ben Gamari at 2023-06-29T13:58:32-04:00
compiler: Make OccSet opaque
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2e4ed59f by Ben Gamari at 2023-06-29T13:58:32-04:00
compiler: Rework ShowSome
Previously the field used to filter the sub-declarations to show
was rather ad-hoc and was only able to show at most one sub-declaration.
- - - - -
8e0c11f6 by Ben Gamari at 2023-06-29T23:08:16-04:00
testsuite: Add test to catch changes in core libraries
This adds testing infrastructure to ensure that changes in core
libraries (e.g. `base` and `ghc-prim`) are caught in CI.
- - - - -
5fc9a62c by Ben Gamari at 2023-06-30T14:09:51-04:00
base: Introduce Data.Enum
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62eb85d0 by Ben Gamari at 2023-06-30T14:09:51-04:00
base: Add export list to GHC.Num.Integer
- - - - -
e3a64752 by Ben Gamari at 2023-06-30T14:09:51-04:00
base: Add export list to GHC.Num
- - - - -
68c7b18d by Ben Gamari at 2023-06-30T14:09:51-04:00
base: Add export list to GHC.Num.Natural
- - - - -
287e42eb by Ben Gamari at 2023-06-30T14:10:00-04:00
base: Introduce Data.Show
- - - - -
66dff1de by Ben Gamari at 2023-06-30T14:10:00-04:00
base: Add export list to GHC.Float
- - - - -
d3618c65 by Ben Gamari at 2023-06-30T14:10:00-04:00
base: Add export list to GHC.Real
- - - - -
f2c9923b by Ben Gamari at 2023-06-30T14:10:00-04:00
base: Eliminate module reexport in GHC.Exception
- - - - -
26 changed files:
- .gitignore
- .gitlab-ci.yml
- .gitlab/ci.sh
- − .gitlab/circle-ci-job.sh
- .gitlab/darwin/toolchain.nix
- + .gitlab/generate-ci/LICENSE
- + .gitlab/generate-ci/README.mkd
- + .gitlab/generate-ci/flake.lock
- + .gitlab/generate-ci/flake.nix
- .gitlab/gen_ci.hs → .gitlab/generate-ci/gen_ci.hs
- + .gitlab/generate-ci/generate-ci.cabal
- + .gitlab/generate-ci/generate-job-metadata
- + .gitlab/generate-ci/generate-jobs
- − .gitlab/generate_job_metadata
- − .gitlab/generate_jobs
- .gitlab/jobs.yaml
- .gitlab/merge_request_templates/merge-request.md → .gitlab/merge_request_templates/Default.md
- .gitlab/rel_eng/mk-ghcup-metadata/README.mkd
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- CODEOWNERS
- HACKING.md
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Prim.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8098c78a9b5e6aab27e5bc4aa965bdca249b902c...f2c9923bc8e2d7a56f47d62dd97446b20d72e6b0
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8098c78a9b5e6aab27e5bc4aa965bdca249b902c...f2c9923bc8e2d7a56f47d62dd97446b20d72e6b0
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