[Git][ghc/ghc][wip/romes/25304] 83 commits: Fix typo in Prelude doc for (>>=)
Rodrigo Mesquita (@alt-romes)
gitlab at gitlab.haskell.org
Mon Oct 21 15:22:43 UTC 2024
Rodrigo Mesquita pushed to branch wip/romes/25304 at Glasgow Haskell Compiler / GHC
Commits:
9ffd6163 by Leo at 2024-09-27T16:26:01+05:30
Fix typo in Prelude doc for (>>=)
Fix a minor typo ("equivialent" instead of "equivalent") in the documentation for (>>=) in the prelude.
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5745dbd3 by Vladislav Zavialov at 2024-09-27T16:26:52+05:30
Wildcard binders in type declarations (#23501)
Add support for wildcard binders in type declarations:
type Const a b = a -- BEFORE: the `b` had to be named
-- even if unused on the RHS
type Const a _ = a -- AFTER: the compiler accepts
-- a wildcard binder `_`
The new feature is part of GHC Proposal #425 "Invisible binders
in type declarations", and more specifically its amendment #641.
Just like a named binder, a wildcard binder `_` may be:
* plain: _
* kinded: (_ :: k -> Type)
* invisible, plain: @_
* invisible, kinded: @(_ :: k -> Type)
Those new forms of binders are allowed to occur on the LHSs of
data, newtype, type, class, and type/data family declarations:
data D _ = ...
newtype N _ = ...
type T _ = ...
class C _ where ...
type family F _
data family DF _
(Test case: testsuite/tests/typecheck/should_compile/T23501a.hs)
However, we choose to reject them in forall telescopes and
type family result variable binders (the latter being part
of the TypeFamilyDependencies extension):
type family Fd a = _ -- disallowed (WildcardBndrInTyFamResultVar)
fn :: forall _. Int -- disallowed (WildcardBndrInForallTelescope)
(Test case: testsuite/tests/rename/should_fail/T23501_fail.hs)
See the new Notes:
* Note [Type variable binders]
* Note [Wildcard binders in disallowed contexts]
To accommodate the new forms of binders, HsTyVarBndr was changed
as follows (demonstrated without x-fields for clarity)
-- BEFORE (ignoring x-fields and locations)
data HsTyVarBndr flag
= UserTyVar flag Name
| KindedTyVar flag Name HsKind
-- AFTER (ignoring x-fields and locations)
data HsTyVarBndr flag = HsTvb flag HsBndrVar HsBndrKind
data HsBndrVar = HsBndrVar Name | HsBndrWildCard
data HsBndrKind = HsBndrNoKind | HsBndrKind LHsKind
The rest of the patch is downstream from this change.
To avoid a breaking change to the TH AST, we generate fresh
names to replace wildcard binders instead of adding a dedicated
representation for them (as discussed in #641).
And to put a cherry on top of the cake, we now allow wildcards in
kind-polymorphic type variable binders in constructor patterns,
see Note [Type patterns: binders and unifiers] and the tyPatToBndr
function in GHC.Tc.Gen.HsType; example:
fn (MkT @(_ :: forall k. k -> Type) _ _) = ...
(Test case: testsuite/tests/typecheck/should_compile/T23501b.hs)
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ff2bdca2 by Matthew Pickering at 2024-09-27T16:27:08+05:30
ci: Push perf notes from wasm jobs
It was observed in #25299 that we were failing to push performance
numbers from the wasm jobs.
In future we might want to remove this ad-hoc check but for now it's
easier to add another special case.
Towards #25299
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4c76f75c by Zubin Duggal at 2024-09-27T16:44:00+05:30
Bump GHC version to 9.12
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e4ac1b0d by Zubin Duggal at 2024-09-27T19:12:24+05:30
Bump GHC version to 9.13
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da20cac1 by Andreas Klebinger at 2024-10-02T22:18:48-04:00
SpecConstr: Introduce a separate argument limit for forced specs.
We used to put no limit at all on specializations forced via the SPEC
argument. This isn't always reasonable so we introduce a very high limit
that applies to forced specializations, a flag to control it, and we now
emit a warning if we fail a specialization because we exceed the
warning.
Fixes #25197
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39497eed by Andreas Klebinger at 2024-10-02T22:19:24-04:00
ghc-experimental: Expose primops and ghc extensions via GHC.PrimOps
This will be the new place for functions that would have gone into
GHC.Exts in the past but are not stable enough to do so now.
Addresses #25242
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e9dc2690 by Sylvain Henry at 2024-10-02T22:20:06-04:00
RTS: cleanup timerfd file descriptors after a fork (#25280)
When we init a timerfd-based ticker, we should be careful to cleanup the
old file descriptors (e.g. after a fork).
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64e876bc by Rodrigo Mesquita at 2024-10-02T22:20:43-04:00
determinism: Deterministic MonadGetUnique LlvmM
Update LlvmM to thread a unique deterministic supply (using UniqDSMT),
and use it in the MonadGetUnique instance.
This makes uniques sampled from LlvmM deterministic, which guarantees
object determinism with -fllvm.
Fixes #25274
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36bbb167 by Matthew Pickering at 2024-10-02T22:21:18-04:00
Bump LLVM upper bound to allow LLVM 19
Also bumps the ci-images commit so that the deb12 images uses LLVM 19
for testing.
-------------------------
Metric Decrease:
size_hello_artifact_gzip
size_hello_unicode_gzip
-------------------------
Fixes #25295
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0029ca91 by Matthew Pickering at 2024-10-02T22:21:54-04:00
configure: Allow happy-2.0.2
happy-2.0.2 can be used to compile GHC.
happy-2.0 and 2.0.1 have bugs which make it unsuitable to use.
The version bound is now == 1.20.* || >= 2.0.2 && < 2.1
Fixes #25276
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92976985 by ARATA Mizuki at 2024-10-02T22:22:35-04:00
Use bundled llc/opt on Windows (#22438)
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af59749a by Matthew Pickering at 2024-10-02T22:23:11-04:00
Fix registerArch for riscv64
The register allocator doesn't support vector registers on riscv64,
therefore advertise as NoVectors.
Fixes #25314
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a49e66fc by Matthew Pickering at 2024-10-02T22:23:11-04:00
riscv: Avoid using csrr instruction to test for vector registers
The csrr instruction isn't allowed in qemu user-mode, and raises an
illegal instruction error when it is encountered.
Therefore for now, we just hard-code that there is no support for vector
registers since the rest of the compiler doesn't support vector
registers for riscv.
Fixes #25312
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115a30e9 by Andreas Klebinger at 2024-10-02T22:23:11-04:00
Add support for fp min/max to riscv
Fixes #25313
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f28b5992 by Ben Gamari at 2024-10-02T22:23:47-04:00
testsuite/perf: Report better error message on malformed note
Previously a malformed perf note resulted in very poor errors.
Here we slight improve this situation.
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51377508 by Ben Gamari at 2024-10-02T22:23:47-04:00
testsuite: Handle division-by-zero more gracefully
Previously we would fail with an ZeroDivisionError.
Fixes #25321
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50490075 by Matthew Pickering at 2024-10-03T05:55:13-04:00
ci: Add nightly & release ubuntu-22.04 jobs
This adds build of bindists on ubuntu-22.04 on nightly and release
pipelines.
We also update ghcup-metadata to provide ubuntu-22.04 bindists on
ubuntu-22.04.
Fixes #25317
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9cf1cef5 by Zubin Duggal at 2024-10-03T05:55:49-04:00
haddock: Bump binary interface version to 46.
This allows haddock to give good error messages when being used on mismatched interface files.
We bump to 46 since GHC 9.12 uses version 45: https://gitlab.haskell.org/ghc/ghc/-/commit/362afd632032ee8f174690c3ffe0015076b83ce6
This should have been done in e4ac1b0d281b85a0144d1ef6f84a1df00e236052 but was overlooked.
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2293c0b7 by Andreas Klebinger at 2024-10-03T05:56:25-04:00
Change versionig of ghc-experimental to follow ghc versions.
Just like ghc-internal it will now use the @ProjectVersionForLib@ macro for versioning.
This means for ghc=9.10.1, ghc-experimental's version will be 9.1001.0 and so on.
This fixes #25289
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876d6e0e by Ben Gamari at 2024-10-04T15:07:53+01:00
base: Add `HasCallStack` constraint to `ioError`
As proposed in core-libraries-committee#275.
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9bfd9fd0 by Matthew Pickering at 2024-10-04T15:08:03+01:00
Fix toException method for ExceptionWithContext
Fixes #25235
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ac004028 by Matthew Pickering at 2024-10-04T15:09:07+01:00
Exception rethrowing
Basic changes:
* Change `catch` function to propagate exceptions using the
WhileHandling mechanism.
* Introduce `catchNoPropagate`, which does the same as before, but
passes an exception which can be rethrown.
* Introduce `rethrowIO` combinator, which rethrows an exception with a
context and doesn't add a new backtrace.
* Introduce `tryWithContext` for a variant of `try` which can rethrow
the exception with it's original context.
* onException is modified to rethrow the original error rather than
creating a new callstack.
* Functions which rethrow in GHC.Internal.IO.Handle.FD,
GHC.Internal.IO.Handle.Internals, GHC.Internal.IO.Handle.Text, and
GHC.Internal.System.IO.Error are modified to not add a new callstack.
Implements CLC proposal#202 <https://github.com/haskell/core-libraries-committee/issues/202>
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bcb293f2 by Cheng Shao at 2024-10-04T17:59:28-04:00
testsuite: remove accidentally checked in debug print logic
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68e2da5a by Rodrigo Mesquita at 2024-10-05T10:36:15-04:00
Deprecation for WarnCompatUnqualifiedImports
Fixes #25330
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4327f0e8 by Andrew Lelechenko at 2024-10-05T10:36:52-04:00
Restrict Data.List.NonEmpty.unzip to NonEmpty (a, b) -> (NonEmpty a, NonEmpty b)
Implementing the final phase of CLC proposal https://github.com/haskell/core-libraries-committee/issues/86
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ceca9efb by Cheng Shao at 2024-10-06T02:18:31+00:00
driver: fix runWorkerLimit on wasm
This commit fixes link-time unresolved symbol errors for sem_open etc
on wasm, by making runWorkerLimit always behave single-threaded. This
avoids introducing the jobserver logic into the final wasm module and
thus avoids referencing the posix semaphore symbols.
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135fd1ac by Torsten Schmits at 2024-10-06T02:18:31+00:00
Parallelize getRootSummary computations in dep analysis downsweep
This reuses the upsweep step's infrastructure to process batches of
modules in parallel.
I benchmarked this by running `ghc -M` on two sets of 10,000 modules;
one with a linear dependency chain and the other with a binary tree.
Comparing different values for the number of modules per thread
suggested an optimum at `length targets `div` (n_cap * 2)`, with results
similar to this one (6 cores, 12 threads):
```
Benchmark 1: linear 1 jobs
Time (mean ± σ): 1.775 s ± 0.026 s [User: 1.377 s, System: 0.399 s]
Range (min … max): 1.757 s … 1.793 s 2 runs
Benchmark 2: linear 6 jobs
Time (mean ± σ): 876.2 ms ± 20.9 ms [User: 1833.2 ms, System: 518.6 ms]
Range (min … max): 856.2 ms … 898.0 ms 3 runs
Benchmark 3: linear 12 jobs
Time (mean ± σ): 793.5 ms ± 23.2 ms [User: 2318.9 ms, System: 718.6 ms]
Range (min … max): 771.9 ms … 818.0 ms 3 runs
```
Results don't differ much when the batch size is reduced to a quarter
of that, but there's significant thread scheduling overhead for a size
of 1:
```
Benchmark 1: linear 1 jobs
Time (mean ± σ): 2.611 s ± 0.029 s [User: 2.851 s, System: 0.783 s]
Range (min … max): 2.591 s … 2.632 s 2 runs
Benchmark 2: linear 6 jobs
Time (mean ± σ): 1.189 s ± 0.007 s [User: 2.707 s, System: 1.103 s]
Range (min … max): 1.184 s … 1.194 s 2 runs
Benchmark 3: linear 12 jobs
Time (mean ± σ): 1.097 s ± 0.006 s [User: 2.938 s, System: 1.300 s]
Range (min … max): 1.093 s … 1.101 s 2 runs
```
Larger batches also slightly worsen performance.
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535a2117 by Daniel Díaz at 2024-10-06T09:51:46-04:00
Clarify the meaning of "exactly once" in LinearTypes
Solves documentaion issue #25084.
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92f8939a by Krzysztof Gogolewski at 2024-10-06T09:52:22-04:00
Only allow (a => b) :: Constraint rather than CONSTRAINT rep
Fixes #25243
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4a2f0f13 by Alan Zimmerman at 2024-10-07T05:16:54-04:00
EPA: Remove unused hsCaseAnnsRest
We never populate it, so remove it.
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5099057b by John Paul Adrian Glaubitz at 2024-10-07T05:17:40-04:00
rts: Fix invocation of __ieee_set_fp_control() on alpha-linux
Fixes the following error when building GHC on alpha-linux:
rts/posix/Signals.c: In function ‘initDefaultHandlers’:
rts/posix/Signals.c:709:5: error:
error: implicit declaration of function ‘ieee_set_fp_control’ [-Wimplicit-function-declaration]
709 | ieee_set_fp_control(0);
| ^~~~~~~~~~~~~~~~~~~
|
709 | ieee_set_fp_control(0);
|
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c9590ba0 by Teo Camarasu at 2024-10-07T05:18:17-04:00
Add changelog entries for !12479
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bf9c9566 by Matthew Pickering at 2024-10-07T13:19:30-04:00
javascript: Read fields of ObjectBlock lazily
When linking a module with a large dependency footprint too much of the
object files were forced during linking. This lead to a large amount of
memory taken up by thunks which would never be forced
On the PartialDownsweep test this halves the memory required (from 25G
to 13G).
Towards #25324
-------------------------
Metric Increase:
size_hello_obj
-------------------------
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571329df by Matthew Pickering at 2024-10-07T13:20:06-04:00
ci: Run the i386 validation job when i386 label is set
This is helpful when making changes to base and must update the
javascript and i386 base exports files.
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e68f9aaf by Matthew Pickering at 2024-10-07T13:20:42-04:00
Rewrite partitionByWorkerSize to avoid pattern match checker bug
With `-g3` the pattern match checker would warn about these incomplete
patterns. This affects the debug_info builds on CI.
```
Pattern match(es) are non-exhaustive
In an equation for ‘go’:
Patterns of type ‘[a]’, ‘[a]’, ‘[SpecFailWarning]’ not matched:
(_:_) _ _
|
2514 | go [] small warnings = (small, warnings)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...
```
Workaround for #25338
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d915dc8b by Arnaud Spiwack at 2024-10-07T19:23:00-04:00
Remove the wrapper/coercion-passing logic for submultiplicity checks
Instead, we use a dedicated DelayedError, which is emitted
systematically on submultiplicity checks, but is suppressed if we can
indeed solve the submultiplicity constraint with a reflexivity
coercion.
This way, we don't have to return anything from `tcSubMult`, which now
looks like a regular constraint check, the rest is implementation
detail. This removes all of the strange boilerplate that I'd been
struggling with under the previous implementation. Even if
submultiplicity checks are not properly constraints, this way it's
contained entirely within a `WantedConstraint`. Much more pleasant.
Closes #25128.
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1d226116 by Sven Tennie at 2024-10-07T19:23:37-04:00
AArch64: Implement switch/jump tables (#19912)
This improves the performance of Cmm switch statements (compared to a
chain of if statements.)
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3fe621dd by Mario Blažević at 2024-10-07T19:24:18-04:00
Fixes #25256, missing parens inside TH-printed pattern type signature
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ea4b4391 by ARATA Mizuki at 2024-10-07T19:24:59-04:00
Better documentation for floatRange function
Closes #16479
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ff09205c by Andreas Klebinger at 2024-10-07T19:25:35-04:00
Adjust progress message for hadrian to include cwd.
Fixes #25335
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5fd320da by Sven Tennie at 2024-10-07T19:26:12-04:00
CCallConv test: Align argument types
The C calling convention / standard requires that arguments and their
values are of the same type.
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c6e5fd3d by Cheng Shao at 2024-10-07T19:26:47-04:00
hadrian: remove unused ghciWithDebugger field from flavour config
This patch removes the ghciWithDebugger field from flavour config
since it's actually not used anywhere.
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9c9c790d by sheaf at 2024-10-07T19:27:23-04:00
user's guide: update docs for X86 CPU flags
This commit updates the section of the user's guide pertaining to
X86 feature flags with the following changes:
- the NCG backend now supports SIMD, so remove all text
that says the contrary,
- the LLVM backend does not "automatically detect" features,
so remove any text that makes that claim.
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a1ecc826 by Sven Tennie at 2024-10-08T13:36:03-04:00
ci: RISCV64 cross-compile testing
This adds a validation job which tests that we can build a riscv64 cross
compiler and build a simple program using it. We do not currently run
the whole testsuite.
Towards #25254
Co-authored-by: Matthew Pickering <matthewtpickering at gmail.com>
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d5c2577f by Arnaud Spiwack at 2024-10-08T13:36:44-04:00
Remove unused accumulators in partition_errors
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55609880 by Andrzej Rybczak at 2024-10-09T16:41:46-04:00
Fix typo in the @since annotation of annotateIO
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ef481813 by Alan Zimmerman at 2024-10-09T16:42:23-04:00
EPA: Remove [AddEpAnn] from (most of) HsExpr
EPA: introduce EpAnnLam for lambda annotationsi, and remove `glAA`
from `Parser.y`, it is the same as `glR`
EPA: Remove unused annotation from XOpApp
EPA: Use EpToken for XNPat and XNegApp
EPA: specific anns for XExplicitTuple / XTuplePat / sumPatParens.
EPA: Use specific annotation for MultiIf
EPA: Move annotations into FunRhs
EPA: Remove [AddEpAnn] from SigPat and ExprWithTySig
EPA: Remove [AddEpAnn] from ArithSeq
EPA: Remove [AddEpAnn] from HsProc
EPA: Remove [AddEpAnn] from HsStatic
EPA: Remove [AddEpAnn] from BindStmt
EPA: Remove [AddEpAnn] from TransStmt
EPA: Remove [AddEpAnn] from HsTypedSplice
EPA: Remove [AddEpAnn] from HsUntypedSpliceExpr
- - - - -
69960230 by Fabian Thorand at 2024-10-10T19:03:59+00:00
Handle exceptions from IO manager backend
If an IO manager backend throws, it will not actually have registered
the file descriptor. However, at that point, the IO manager state was
already updated to assume the file descriptor is being tracked, leading
to errors and an eventual deadlock down the line as documented in the
issue #21969.
The fix for this is to undo the IO manager state change in case the
backend throws (just as we already do when the backend signals that the
file type is not supported). The exception then bubbles up to user code.
That way we make sure that
1. the bookkeeping state of the IO manager is consistent with the
actions taken by the backend, even in the presence of unexpected
failures, and
2. the error is not silent and visible to user code, making failures
easier to debug.
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1587cccf by Hassan Al-Awwadi at 2024-10-11T03:52:36-04:00
Put RdrName in the foExt field of FieldOcc
The main purpose of this commit is to rip RdrName out of FieldOcc, in
accordance with #21592, and as a side note it has simplified the method
we use to deal with ambiguity somewhat.
To do the first, we make FieldOccs store (LIdP p) instead of always
storing Located RdrName, and moved the readername to the extension
points where necessary.
For the second, well, we just turn an ambiguous RdrName into a unbound
Name through mkUnboundName. Later during disambiguateRecordBinds of the
type checking phase, we will try and do type-directed disambiguation based
on the rdrName field (for now), so this hack works out fine.
See Note [Ambiguous FieldOcc in record updates] for more details.
There are two additional minor changes in this commit:
* The HsRecSel constructor of HsExpr has been moved to the extension
constuctors, since its really GHC specific.
* HsProjection no longer has a Located DotFieldOcc as a field, but just a
regular DotFieldOcc, since DotFieldOcc already wraps a located
FieldLabelString
co-authored by: @Jade <Jade512 at proton.me>
@alt-romes <rodrigo.m.mesquita at gmail.com>
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2338a971 by Cheng Shao at 2024-10-11T03:53:13-04:00
driver: bail out when -fllvm is passed to GHC not configured with LLVM
This patch makes GHC bail out with an proper error message when it's
not configured with LLVM but users attempt to pass -fllvm, see #25011
and added comment for details.
Fixes #25011
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita at gmail.com>
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78ad81ec by Cristiano Moraes at 2024-10-11T03:53:55-04:00
configure: Find C++ probing when GCC version is the latest but G++ is old #23118
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083703a1 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Consider Wanteds with rewriters as insoluble
This MR fixes #25325
See GHC.Tc.Types.Constraint, Note [Insoluble Wanteds], especially (IW2)
There is a small change in the error message for T14172, but it looks
entirely acceptable to me.
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0dfaeb66 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Wibbles
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09d24d82 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Spelling errors
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694489ed by sheaf at 2024-10-11T03:55:14-04:00
LLVM: use sse4.2 instead of sse42
LLVM expects the former instead of the latter since version 3.4.
Fixes #25019
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06ae8507 by sheaf at 2024-10-11T03:55:14-04:00
LLVM: make SSE4.2 imply +popcnt
For consistency with the NCG as well as with Clang and GCC, we make
the SSE4.2 feature flag imply +popcnt when using the LLVM backend.
Fixes #25353
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3fe843c7 by Cheng Shao at 2024-10-11T03:55:50-04:00
Drop obsolete libffi Makefile
This patch drops obsolete libffi Makefile from the tree, given it's
completely unused since removal of make build system in !7094.
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df70405c by Ben Gamari at 2024-10-11T03:56:26-04:00
ghc-internal: Fix incomplete matches on IOError
As noted in #25362, these incomplete matches were previously not being
warned about. They were easily addressed by use of
`GHC.Internal.Event.Windows.withException`.
Closes #25362.
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8584504b by Matthew Pickering at 2024-10-11T03:57:02-04:00
compiler: Fix orientation of GHC.Hs.Doc boot file
We should be free to import things from Language.Haskell.Syntax in GHC
modules. Therefore the the boot file for the loop between ImpExp and
GHC.Hs.Doc was in the wrong place.
Issue #21592
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d029f170 by Ben Gamari at 2024-10-11T23:43:17-04:00
testsuite: Normalise trailing digits from hole fits output
The type variables in the holes fit output from
`abstract_refinement_hole_fits` is quite sensitive to compiler
configuration. Specifically, a slight change in the inlining
behavior of `throw` changes type variable naming in `(>>=)` and a few
others.
Ideally we would make hole fits output more deterministic but in the
meantime we simply normalise this difference away as it not relevant
to the test's goal.
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da5d7d0d by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Add test for #25066
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eb7ddae1 by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Fix #25066
As noted in #25066, the exception backtrace proposal introduced a rather
subtle performance regression due to simplification producing Core which
the demand analyser concludes may diverge with a precise exception. The
nature of the problem is more completely described in the new Note
[Hiding precise exception signature in throw].
The (rather hacky) solution we use here hides the problematic
optimisation through judicious use of `noinline`. Ultimately however we
will want a more principled solution (e.g. #23847).
Fixes #255066
CLC proposal: https://github.com/haskell/core-libraries-committee/issues/290
Metric Decrease:
T9872d
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0060ece7 by Ben Gamari at 2024-10-11T23:43:17-04:00
base: Improve documentation of Control.Exception.Backtrace
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18f532f3 by Ben Gamari at 2024-10-11T23:43:53-04:00
Bump process submodule to v1.6.25.0
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a9a3badf by Hassan Al-Awwadi at 2024-10-11T23:44:29-04:00
Move HsInteger and HsRat to an extension constructor
These constructors were only used during the TC stage,
or during template haskell. It seemed clear that it was
independent of the source syntax represented in L.H.S,
and thus we removed it according to #21592.
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4dd30cba by Artem Pelenitsyn at 2024-10-11T23:45:09-04:00
Docs: Linear types: link Strict Patterns subsection
Also, fix a bug in RST with missing newline before a listing.
Co-authored-by: Arnaud Spiwack <arnaud at spiwack.net>
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adca5f2b by Ben Gamari at 2024-10-11T23:45:45-04:00
users guide: Address remaining TODOs in eventlog format docs
Closes #25296.
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9291c125 by Sylvain Henry at 2024-10-11T23:46:26-04:00
Fix z-encoding of tuples (#25364)
Tuples with prefix/suffix strings weren't always properly encoded with
their shortcut notations. Fix this.
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c08b68bc by Sven Tennie at 2024-10-11T23:47:01-04:00
Delete constants that can be deduced
There are macros in MachRegs.h to figure those out.
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8b402da2 by Zubin Duggal at 2024-10-12T20:36:57+00:00
hadrian: Handle broken symlinks properly when creating source dist directories
If we have a broken symlink in the repository, don't try to `need` the symlink
or the target of the symlink. Attempting to do so has `shake` attempt to read the
target to compute its hash, which fails because the target doesn't exist.
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16f97667 by Zubin Duggal at 2024-10-12T20:36:57+00:00
hadrian: exclude cabal.project.symlink.broken from source archives
Cabal 3.14 introduced a broken symlink in its testsuite. Unfortunately,
this broke our source distribution as we use use `tar --dereference` to avoid
issues with symlink compatibility on windows, and `tar --dereference` chokes
when it encounters any broken symlinks.
We can't get rid of `--dereference` because symlinks are generally broken on
windows, so the only option is to exclude this file from source archives.
see also https://github.com/haskell/cabal/issues/10442
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f1a2c9fc by Zubin Duggal at 2024-10-12T20:36:57+00:00
Bump Cabal submodule to 3.14
Metric Decrease:
MultiLayerModulesTH_OneShot
Metric Increase:
haddock.Cabal
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745dd590 by Ben Gamari at 2024-10-14T09:13:12-04:00
users-guide: Document GHCi :where command
Resolve #24509.
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e9cc4699 by Alan Zimmerman at 2024-10-14T09:13:48-04:00
EPA: Remove [AddEpAnn] from IE, Pat and some Tys
EPA: Remove [AddEpAnn] from LazyPat
EPA: Remove [AddEpAnn] from RecordCon/RecordUpd/ConPat
EPA: Remove [AddEpAnn] from HsFieldBind
EPA: Remove [AddEpAnn] from PatSynBind
EPA: Remove [AddEpAnn] from IPBind
EPA: Remove [AddEpAnn] from FixSig
EPA: Remove [AddEpAnn] from activation rules
EPA: Remove [AddEpann] from SpecInstSig
EPA: Remove [AddEpAnn] from MinimalSig
EPA: Remove [AddEpAnn] from SCCFunSig
EPA: Remove [AddEpAnn] from CompleteMatchSig
EPA: Remove [AddEpAnn] from AnnSig, as used in PatSynSig, ClassOpSig, TypeSig
EPA: Remove [AddEpAnn] from IEThingAbs
EPA: Remove [AddEpAnn] from IEThingAll / IEThingWith
EPA: Remove [AddEpAnn] from IEModuleContents
EPA: Remove [AddEpAnn] from HsOpTy
EPA: Remove [AddEpAnn] for various binders
EPA: Remove [AddEpAnn] for HsIParamTy
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81a570bf by Sebastian Graf at 2024-10-14T22:15:31-04:00
Desugaring, plus -Wincomplete-record-selectors
This commit does several related things:
* Major refactor of the handling of applications in the desugarer.
Now all applications are handled in `dsApp`, `ds_app` and related
functions. This dramatically simplifies the code and removes
complicated cruft that had accumulated. Hooray.
Fixes #25281.
* Improve the handling of -Wincomplete-record-selectors.
We now incorporate the result type of unsaturated record selector
applications as well as consider long-distance information in
getField applications.
Plus, the implmentation now builds the improved `dsApp` stuff
above, so it is much easier to understand.
Plus, incorporates improved error message wording suggested
by Adam Gundry in !12685.
Fixes #24824, #24891
See the long Note [Detecting incomplete record selectors]
* Add -Wincomplete-record-selectors to -Wall, as specified in
GHC Proposal 516.
To do this, I also had to add -Wno-incomplete-record-selectors
to the build flags for Cabal in GHC's CI. See
hadrian/src/Settings/Warnings.hs. We can remove this when
Cabal is updated so that it doesn't trigger the warning:
https://github.com/haskell/cabal/issues/10402
2.6% decrease in compile time allocation in RecordUpPerf
Metric Decrease:
RecordUpdPerf
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ae7bc08e by Simon Peyton Jones at 2024-10-14T22:15:31-04:00
Elmininate incomplete record selectors
This patch is a pure refactor of GHC's source code, to avoid the use
of partial record selectors. It was provoked by adding
-Wincomplete-record-selectors to -Wall (as the GHC Proposal specified),
which in turn showed up lots of places where GHC was using incomplete
record selectors.
This patch does mostly-simple refactoring to make it clear to the pattern
match checker that there is in fact no partiality.
There is one externally-visible change: I changed the data type HoleFit
to split out the two cases
data HoleFit = TcHoleFit TcHoleFit | RawHoleFit SDoc
data TcHoleFit = HoleFit { ...lots of fields }
There are large swathes of code that just deal with `TcHoleFit`, and
having it as a separate data types makes it apparent that `RawHoleFit`
can't occur.
This makes it much better -- but the change is visible in the
HolePlugin interface. I decided that there are so few clients of this
API that it's worth the change.
I moved several functions from Language.Haskell.Syntax to GHC.Hs.
Reason, when instantiated at (GhcPass _), the extension data construtcor
is guaranteed unused, and that justifies omitted patterns in these
functions. By putting them in GHC.Hs.X I can specialise the type for
(GhcPass _) and thereby make the function total.
An interesting side-light is that there were a few local function
definitions without a type signature, like this one in GHC.Parser.Header
convImport (L _ i) = (ideclPkgQual i, reLoc $ ideclName i)
This is fully closed, and so is generalised; but that generalises
it to any old pass, not (GhcPass _), so GHC rightly complains about the
use of the selector `ideclPkgQual`. I added a type signature to `i`, thus
convImport (L _ (i::ImportDecl GhcPs))
= (ideclPkgQual i, reLoc $ ideclName i)
which specialised the function enough to make the record selector complete.
Quite a surprising consequence of local let-generalisation!
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6a067226 by Simon Peyton Jones at 2024-10-14T22:15:31-04:00
Add -Werror=-Wno-error=incomplete-record-selectors to hadrian-multi
In the main MR, -Wall now includes -Wincomplete-record-selectors.
However `hadrian-multi` has many, many warnings about incomplete
record selectors, so this patch stops those warnings being treated
as errors. (See discussion on !13308.)
A better fix would be to remove the use of incomplete record
selectors, since each of them represents a potential crash.
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edeafc14 by Ben Gamari at 2024-10-14T22:16:08-04:00
users-guide: Document field coalescence
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55b83587 by ARATA Mizuki at 2024-10-14T22:16:49-04:00
LLVM backend: Use correct rounding for Float literals
Fixes #22033
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b75f313b by Rodrigo Mesquita at 2024-10-21T16:21:47+01:00
determinism: Interface re-export list det
In 'DocStructureItem' we want to make sure the 'Avails' are sorted, for
interface file determinism. This commit introduces 'DetOrdAvails', a
newtype that should only be constructed by sorting Avails with
'sortAvails' unless the avails are known to be deterministically
ordered. This newtype is used by 'DocStructureItem' where 'Avails' was
previously used to ensure the list of avails is deterministically sorted
by construction.
Note: Even though we order the constructors and avails in the interface
file, the order of constructors in the haddock output is still
determined from the order of declaration in the source. This was also
true before, when the list of constructors in the interface file <docs>
section was non-deterministic. Some haddock tests such as
"ConstructorArgs" observe this (check the order of constructors in
out/ConstructorArgs.html vs src/ConstructorArgs.hs vs its interface file)
The updated tests are caused by haddock corners where the order in the
source is not preserved (and was non-deterministic before this PR):
* Module header in the latex backend
* Re-export of pattern synonyms associated to a datatype (#25342)
Fixes #25304
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fff33d40 by Rodrigo Mesquita at 2024-10-21T16:22:29+01:00
Don't log GHC invocation in abi-test
The two abi test invocations would differ because of -dinitial-unique
and -dunique-increment
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e94dc2bb by Rodrigo Mesquita at 2024-10-21T16:22:30+01:00
Revert "ci: Allow abi-test to fail."
After #25304, the abi-test with interface and object determinism
succeeds.
This reverts commit 7b37afc9f3e79559055488998ee73187886a0e00.
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30 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Instr.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Stats.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/ConLike.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/LateCC/OverloadedCalls.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/80539878902aa787c36d542b19b323793c09db36...e94dc2bbb7742fd86a9326b3b02f51a88b000c07
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/80539878902aa787c36d542b19b323793c09db36...e94dc2bbb7742fd86a9326b3b02f51a88b000c07
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