[Git][ghc/ghc][wip/T25365] 355 commits: Add regression test for #16234
Ben Gamari (@bgamari)
gitlab at gitlab.haskell.org
Mon Mar 10 23:35:52 UTC 2025
Ben Gamari pushed to branch wip/T25365 at Glasgow Haskell Compiler / GHC
Commits:
fa66fa64 by Ryan Scott at 2024-11-14T19:05:00-05:00
Add regression test for #16234
Issue #16234 was likely fixed by !9765. This adds a regression test to ensure
that it remains fixed.
Fixes #16234.
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bfe64df8 by Matthew Pickering at 2024-11-14T19:05:36-05:00
ghc-internal: Update to Unicode 16
This patch updates the automatically generated code for querying unicode
properties to unicode 16.
Fixes #25402
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1fd83f86 by Ben Gamari at 2024-11-14T19:06:13-05:00
configure: Accept happy-2.1.2
happy-2.1 was released in late Oct 2024. I have confirmed that master
bootstraps with it. Here we teach configure to accept this tool.
Fixes #25438.
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aa58fc5b by Ben Gamari at 2024-11-14T19:06:49-05:00
rts: Tighten up invariants of PACK
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8aa4c10a by Ben Gamari at 2024-11-14T19:06:49-05:00
testsuite: Fix badly escaped literals
Use raw string literals to ensure that `\s` is correctly interpreted as
a character class.
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0e084029 by Ben Gamari at 2024-11-14T19:06:49-05:00
rts: Improve documentation of SLIDE bytecode instruction
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9bf3663b by Ben Gamari at 2024-11-14T19:06:49-05:00
rts/Interpreter: Assert that TEST*_P discriminators are valid
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1f668511 by Ben Gamari at 2024-11-14T19:06:49-05:00
rts/Interpreter: Improve documentation of TEST*_P instructions
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59e0a770 by Cheng Shao at 2024-11-14T19:07:25-05:00
misc: improve clangd compile_flags.txt flags
This patch improves the compile_flags.txt config used to power clangd
for the rts C codebase. The flags in the file are sampled & deduped
from a real stage1 build with clang-19 and vastly improves the IDE
accuracy when hacking the rts.
For maximum code coverage under the default settings,
compile_flags.txt defaults to threaded+profiled+dynamic+debug way.
This does not mean profdyn needs to be actually built in _build/stage1
for IDE to work. To activate IDE for other RTS ways, simply remove one
of the -D flags at the end of compile_flags.txt and restart clangd.
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c2c562e0 by Ben Gamari at 2024-11-14T19:08:01-05:00
testsuite: Don't consider untracked files in dirtiness check
Considering trees containing untracked files as dirty is a bridge too
far. The chance of an untracked file significantly affecting measured
performanced metrics is quite small whereas not collecting measurements
is quite inconvenient for some workflows. We now ignore untracked files
in the dirtiness check.
Fixes #25471.
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ed2ed6c5 by Cheng Shao at 2024-11-14T19:08:37-05:00
testsuite: add regression test T25473
This commit adds regression test T25473 marked as broken due to #25473.
It will be fixed in the subsequent commit.
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bd0a8b7e by Cheng Shao at 2024-11-14T19:08:37-05:00
wasm: fix foreign import javascript "wrapper" in TH/ghci
This patch fixes foreign import javascript "wrapper" in wasm backend's
TH/ghci by fixing the handling of dyld/finalization_registry magic
variables. Fixes T25473 and closes #25473.
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f1b0bc32 by Ben Gamari at 2024-11-14T19:09:13-05:00
rts/linker: Make FreeBSD declarations proper prototypes
The iconv declarations for FreeBSD were previously not prototypes,
leading to warnings.
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086cbbc1 by Ben Gamari at 2024-11-14T19:09:13-05:00
base: Drop redundant import in FreeBSD ExecutablePath implementation
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79ecd199 by Ben Gamari at 2024-11-14T19:09:13-05:00
compiler: Fix partial selector warnings in GHC.Runtime.Heap.Inspect
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1acb73bf by Andrew Lelechenko at 2024-11-15T06:10:47-05:00
gitlab: mention CLC in MR template
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8f2e0832 by Ben Gamari at 2024-11-15T06:11:24-05:00
rts: Allow use of GNU-stack notes on FreeBSD
Previously we gated use of GNU-style non-executable stack notes to only
apply on Linux. However, these are also supported by FreeBSD, which also
uses ELF. Fix this.
Fixes #25475.
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2c427cb0 by Ben Gamari at 2024-11-16T05:27:40-05:00
rts: Fix EINTR check in timerfd ticker
When `poll` failed we previously checked that `errno == -EINTR` to
silence the failure warning. However, this is wrong as `errno` values
are generally not negated error codes (in contrast to many system call
results, which is likely what the original author had in mind).
Fixes #25477.
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a0fa4941 by Ben Gamari at 2024-11-16T05:28:16-05:00
rts: Increase gen_workspace alignment to 128 bytes on AArch64
Increase to match the 128-byte cache-line size of Apple's ARMv8
implementation.
Closes #25459.
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142d8afa by Ben Gamari at 2024-11-16T16:20:47-05:00
rts/RtsFlags: Refactor size parsing
This makes a number of improvements mentioned in #20201:
* fail if the argument cannot be parsed as a number (`-Mturtles`)
* fail if an unrecognized unit is given (e.g. `-M1x`)
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b7a146e5 by Ben Gamari at 2024-11-16T16:20:47-05:00
testsuite: Add tests for RTS flag parsing error handling
See #20201.
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ddb7afa6 by Ben Gamari at 2024-11-16T16:21:23-05:00
users guide: Mention language extensions in equality constraints discussion
As suggested in #24127, mention the language extensions necessary for
usage of equality constriants in their documentation.
Closes #24127.
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36133dac by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide/9.14.1-notes: Fix list syntax
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888de658 by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide/debug-info: Fix duplicate flag descriptions
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f120e427 by Ben Gamari at 2024-11-16T16:21:23-05:00
users-guide: Fix reference to 9.14.1 release notes
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8e975032 by Ben Gamari at 2024-11-16T16:21:59-05:00
Introduce GHC.Tc.Plugin.lookupTHName
This makes it significantly more convenient (and less
GHC-version-dependent) to resolve a template-haskell name into a GHC
Name.
As proposed in #24741.
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a0e168ec by ARATA Mizuki at 2024-11-16T16:22:40-05:00
x86 NCG SIMD: Lower packFloatX4#, insertFloatX4# and broadcastFloatX4# to SSE1 instructions
Fixes #25441
Co-authored-by: sheaf <sam.derbyshire at gmail.com>
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3936bf1b by sheaf at 2024-11-16T16:23:22-05:00
X86 NCG: allow VXOR at scalar floating-point types
The NCG can emit VXOR instructions at scalar floating-point types,
but the pretty-printer would panic instead of emitting the appropriate
VXORPS/VXORPD instructions. This patch rectifies that oversight.
Fixes #25455
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d9dff93a by Ben Gamari at 2024-11-16T16:23:58-05:00
rts: Fix platform-dependent pointer casts
Previously we had unnecessary (and incorrect) platform-dependent casts
to turn `OSThreadIds`s into a integer. We now just uniformly cast first
to a `uintptr_t` (which is always safe, regardless of whether
`OSThreadId` is a pointer), and then cast to the desired integral type.
This fixes a warning on musl platforms.
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6d95cdb8 by Ben Gamari at 2024-11-16T16:24:34-05:00
testsuite: Mark encoding004 as broken on FreeBSD
Due to #22003, CP936 fails to roundtrip:
```diff
== CP936
+Failed to roundtrip given mutant byte at index 891 (251 /= 123 at index 891)
+Failed to roundtrip given mutant byte at index 1605 (197 /= 69 at index 1605)
+Failed to roundtrip given mutant byte at index 2411 (235 /= 107 at index 2411)
+Failed to roundtrip given mutant byte at index 6480 (208 /= 80 at index 6480)
+Failed to roundtrip given mutant byte at index 6482 (210 /= 82 at index 6482)
+Failed to roundtrip given mutant byte at index 6484 (212 /= 84 at index 6484)
+Failed to roundtrip given mutant byte at index 6496 (224 /= 96 at index 6496)
+Failed to roundtrip given mutant byte at index 7243 (203 /= 75 at index 7243)
+Failed to roundtrip given mutant byte at index 7277 (237 /= 109 at index 7277)
+Failed to roundtrip given mutant byte at index 8027 (219 /= 91 at index 8027)
+Failed to roundtrip given mutant byte at index 8801 (225 /= 97 at index 8801)
```
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26e86984 by Ben Gamari at 2024-11-18T04:05:31-05:00
hadrian: Allow haddock options to be passed via key-value settings
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6e68b117 by Matthew Pickering at 2024-11-18T04:06:07-05:00
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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a4e0d235 by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00
exceptions: Improve the message layout as per #285
This commit fixes the layout of the additional information included when
displaying an exception, namely the type of the exception.
It also fixes the default handler's heading message to work well
together with the improved display message of SomeException.
CLC proposal#285
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284ffab3 by Rodrigo Mesquita at 2024-11-18T04:06:07-05:00
Display type and callstack of exception on handler
This commit changes the Exception instance of SomeException to *simply*
display the underlying exception in `displayException`. The augmented
exception message that included the type and backtrace of the exception
are now only printed on a call to `displayExceptionWithInfo`.
At a surface level, existing programs should behave the same since the
`uncaughtExceptionHandler`, which is responsible for printing out uncaught
exceptions to the user, will use `displayExceptionWithInfo` by default.
However, unlike the instance's `displayException` method, the
`uncaughtExceptionHandler` can be overriden with
`setUncaughtExceptionHandler`. This makes the extra information opt-in
without fixing it the instance, which can be valuable if your program
wants to display uncaught exceptions to users in a user-facing way
(ie without backtraces).
This is what was originally agreed for CLC#231 or CLC#261 with regard to
the type of the exception information.
The call stack also becoming part of the default handler rather than the
Exception instance is an ammendment to CLC#164.
Discussion of the ammendment is part of CLC#285.
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36cddd2c by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Remove redundant CallStack from exceptions
Before the exception backtraces proposal was implemented, ErrorCall
accumulated its own callstack via HasCallStack constraints, but
ExceptionContext is now accumulated automatically.
The original ErrorCall mechanism is now redundant and we get a duplicate
CallStack
Updates Cabal submodule to fix their usage of ErrorCallWithLocation to ErrorCall
CLC proposal#285
Fixes #25283
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7a74330b by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Freeze call stack in error throwing functions
CLC proposal#285
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3abf31a4 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
De-duplicate displayContext and displayExceptionContext
The former was unused except for one module where it was essentially
re-defining displayExceptionContext.
Moreover, this commit extends the fix from
bfe600f5bb3ecd2c8fa71c536c63d3c46984e3f8 to displayExceptionContext too,
which was missing.
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c0d783f8 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Re-export NoBacktrace from Control.Exception
This was originally proposed and accepted in section
"2.7 Capturing Backtraces on Exceptions"
of the CLC proposal for exception backtraces.
However, the implementation missed this re-export, which this commit now
fixes.
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802b5c3e by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Fix exception backtraces from GHCi
When running the program with `runhaskell`/`runghc` the backtrace should
match the backtrace one would get by compiling and running the program.
But currently, an exception thrown in a program interpreted with
`runhaskell` will:
* Not include the original exception backtrace at all
* Include the backtrace from the internal GHCi/ghc rethrowing of the
original exception
This commit fixes this divergence by not annotating the ghc(i) backtrace
(with NoBacktrace) and making sure that the backtrace of the original
exception is serialized across the boundary and rethrown with the
appropriate context.
Fixes #25116
The !13301 MR (not this commit in particular) improves performance of
MultiLayerModules. Unfortunately, T3294 regresses on aarch64-linux-deb12
by 1% allocations. Since this patch must be merged for 9.12 ASAP, we
will not be able to investigate the slight regression on this platform
in time.
-------------------------
Metric Decrease:
MultiLayerModulesRecomp
MultiLayerModulesTH_OneShot
Metric Increase:
T3294
-------------------------
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3e89eb65 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
base: Add to changelog.md CLC #285
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d9326a48 by Rodrigo Mesquita at 2024-11-18T04:06:08-05:00
Bump array and stm submodules for testsuite
The testsuites of array and stm had to be updated according to !13301.
Updates submodule array and stm.
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325fcb5d by Ben Gamari at 2024-11-18T04:06:45-05:00
rts/adjustor: Clean up code style of Nativei386 adjustor
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39bb6e58 by Ben Gamari at 2024-11-18T04:06:45-05:00
rts/adjustor: Fix stack overrun error in Nativei386 adjustor
We were reserving the wrong kind of adjustor context (the generic
`AdjustorContext` used by other adjustor implementations, rather than
the i386-specific `CCallContext`) to return the adjustor context while
freeing, resulting in #25485.
Fixes #25485.
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831aab22 by sheaf at 2024-11-18T21:22:36-05:00
Include diagnostic reason in -fdiagnostics-as-json
This commit ensures that the -fdiagnostics-as-json output includes the
diagnostic reason. This allows the full error message produced by GHC
to be re-constructed from the JSON output.
Fixes #25403
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3e5bfdd3 by Ben Gamari at 2024-11-18T21:23:12-05:00
rts: Introduce printIPE
This is a convenience utility for use in GDB.
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44d909a3 by Sjoerd Visscher at 2024-11-19T14:38:24-05:00
Don't store boot locations in finder cache
Partially reverts commit fff55592a7b
Amends add(Home)ModuleToFinder so that locations for boot files are not stored in the finder cache.
Removes InstalledModule field from InstalledFound constructor since it's the same as the key that was searched for.
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64c95292 by Sjoerd Visscher at 2024-11-19T14:38:24-05:00
Concentrate boot extension logic in Finder
With new mkHomeModLocation that takes an extra HscSource to add boot extensions if required.
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11bad98d by ARATA Mizuki at 2024-11-19T14:39:08-05:00
Better documentation for floating-point min/max and SIMD primitives
See #25350 for floating-point min/max
Co-authored-by: sheaf <sam.derbyshire at gmail.com>
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791a47b2 by Arnaud Spiwack at 2024-11-20T14:00:05+00:00
Add test for #25185
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374e18e5 by Arnaud Spiwack at 2024-11-20T14:09:30+00:00
Quick look: emit the multiplicity of app heads in tcValArgs
Otherwise it's not scaled properly by the context, allowing unsound
expressions.
Fixes #25185.
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1fc02399 by sheaf at 2024-11-20T18:11:03-05:00
x86 NCG: fix regUsageOfInstr for VMOVU & friends
This commit fixes the implementation of 'regUsageOfInstr' for vector
operations that take an 'Operand' as the destination, by ensuring that
when the destination is an address then the address should be *READ*,
and not *WRITTEN*.
Getting this wrong is a disaster, as it means the register allocator
has incorrect information, which can lead to it discard stores to
registers, segfaults ensuing.
Fixes #25486
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7bd407a6 by Brandon Chinn at 2024-11-21T14:08:15-05:00
Fix CRLF in multiline strings (#25375)
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7575709b by Rodrigo Mesquita at 2024-11-21T14:08:52-05:00
Improve reachability queries on ModuleGraph
Introduces `ReachabilityIndex`, an index constructed from a
`GHC.Data.Graph.Directed` `Graph` that supports fast reachability
queries (in $O(1)$). This abstract data structure is exposed from
`GHC.Data.Graph.Directed.Reachability`.
This index is constructed from the module graph nodes and cached in
`ModuleGraph`, enabling efficient reachability queries on the module
graph. Previously, we'd construct a Map of Set of ModuleGraph nodes
which used a lot of memory (`O(n^2)` in the number of nodes) and cache
that in the `ModuleGraph`. By using the reachability index we get rid of
this space leak in the module graph -- even though the index is still
quadratic in the number of modules, it is much, much more space
efficient due to its representation using an IntMap of IntSet as opposed
to the transitive closure we previously cached.
In a memory profile of MultiLayerModules with 100x100 modules, memory
usage improved from 6GB residency to 2.8GB, out of which roughly 1.8GB
are caused by a second space leak related to ModuleGraph. On the same
program, it brings compile time from 7.5s to 5.5s.
Note how we simplify `checkHomeUnitsClosed` in terms of
`isReachableMany` and by avoiding constructing a second graph with the
full transitive closure -- it suffices to answer the reachability query
on the full graph without collapsing the transitive closure completely
into nodes.
Unfortunately, solving this leak means we have to do a little bit more
work since we can no longer cache the result of turning vertex indices
into nodes. This results in a slight regression in MultiLayerModulesTH_Make,
but results in large performance and memory wins when compiling large
amounts of modules.
-------------------------
Metric Decrease:
mhu-perf
Metric Increase:
MultiLayerModulesTH_Make
-------------------------
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bcbcdaaf by Cheng Shao at 2024-11-21T14:09:28-05:00
driver: fix hpc undefined symbol issue in TH with -fprefer-byte-code
This commit fixes an undefined symbol error in RTS linker when
attempting to compile home modules with -fhpc and
-fbyte-code-and-object-code/-fprefer-byte-code, see #25510 for
detailed description and analysis of the bug.
Also adds T25510/T25510c regression tests to test make mode/oneshot
mode of the bug.
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970ada5a by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Bump ci-images
For introduction of Alpine/i386 image.
Thanks to Julian for the base image.
Co-Authored-By: Julian Ospald <hasufell at hasufell.de>
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8115abc2 by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Add release job for i386/Alpine
As requested by Mikolaj and started by Julian.
Co-Authored-By: Julian Ospald <hasufell at hasufell.de>
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639f0149 by Ben Gamari at 2024-11-22T23:32:06-05:00
rts/linker/Elf: Resolve _GLOBAL_OFFSET_TABLE_
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490d4d0a by Ben Gamari at 2024-11-22T23:32:06-05:00
gitlab-ci: Mark i386 Alpine test breakages
Marks the following tests as broken on i386/Alpine:
* T22033 due to #25497
* simd009, T25062_V16, T25169, T22187_run due to #25498
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536cdf09 by Cheng Shao at 2024-11-22T23:32:42-05:00
compiler: remove unused GHC.Linker.Loader.loadExpr
This patch removes the unused `GHC.Linker.Loader.loadExpr` function.
It was moved from `GHC.Runtime.Linker.linkExpr` in `ghc-9.0` to
`GHC.Linker.Loader.loadExpr` in `ghc-9.2`, and remain completely
unused and untested ever since. There's also no third party user of
this function to my best knowledge, so let's remove this. Anyone who
wants to write their own GHC API function to load bytecode can consult
the source code in older release branches.
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6ee35024 by Drew Fenwick at 2024-11-22T23:33:26-05:00
Fix a non-compiling example in the type abstractions docs
This patch adds a missing Show constraint to a code example in the User Guide's type abstractions docs to fix issue #25422.
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d1172e20 by Rodrigo Mesquita at 2024-11-22T23:34:02-05:00
Re-introduce ErrorCallWithLocation with a deprecation pragma
With the removal of the duplicate backtrace, part of CLC proposal #285,
the constructor `ErrorCallWithLocation` was removed from base.
This commit re-introduces it with a deprecation.
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1187a60a by Ben Gamari at 2024-11-22T23:34:39-05:00
testsuite: Skip tests requiring Hadrian deps in out-of-tree testsuite runs
Some testsuite tests require specific tools (e.g. `check-ppr` and
`check-exact`) beyond those shipped in the binary distribution. Skip
these tests.
Fixes #13897.
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c37d7a2e by Ben Gamari at 2024-11-22T23:34:39-05:00
testsuite: Declare exactprint tests' dependency on check-exact
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454ce957 by Ben Gamari at 2024-11-22T23:35:15-05:00
ghc-internal: Fix a few cases of missing Haddock markup
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a249649b by Ben Gamari at 2024-11-22T23:35:51-05:00
testsuite/GHCiPrimCall : Add missing Makefile includes
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a021a493 by Ben Gamari at 2024-11-22T23:35:51-05:00
testsuite/IpeStats: Use Make rather than shell interpolation
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6e1fbda7 by Ben Gamari at 2024-11-25T03:55:44-05:00
hadrian-ghci-multi: Pass -this-package-name in unit response files
As noted in #25509, the `-this-package-name` must be passed for each
package to ensure that GHC can response references to the packages'
exposed modules via package-qualified imports. Fix this.
Closes #25509.
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a05e4a9b by Simon Hengel at 2024-11-25T03:56:33-05:00
Refactoring: Use `OnOff` more consistently for `Extension`
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7536181d by Matthew Pickering at 2024-11-25T14:00:07-05:00
driver: Always link against "base" package when one shot linking
The default value for base-unit-id is stored in the settings file.
At install time, this can be set by using the BASE_UNIT_ID environment
variable.
At runtime, the value can be set by `-base-unit-id` flag.
For whether all this is a good idea, see #25382
Fixes #25382
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7f90f319 by Andreas Klebinger at 2024-11-25T14:00:44-05:00
Compacting GC: Handle black holes in large objects.
As #14497 showed black holes can appear inside large objects when
we capture a computation and later blackhole it like we do for AP_STACK
closures.
Fixes #24791
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291388e1 by Cheng Shao at 2024-11-25T14:01:19-05:00
ci: minor nix-in-docker improvements
This patch makes some minor improvements re nix-in-docker logic in the
ci configuration:
- Update `nixos/nix` to the latest version
- Apply $CPUS to `cores`/`max-jobs` to avoid oversubscribing while
allowing a reasonable degree of parallelism
- Remove redundant `--extra-experimental-features nix-command` in
later `nix shell` invocations, it's already configured in
`/etc/nix/nix.conf`
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e684c406 by Cheng Shao at 2024-11-25T14:01:57-05:00
ci: avoid depending on stack job for test-bootstrap jobs
This patch makes test-bootstrap related ci jobs only depend on
hadrian-ghc-in-ghci job to finish, consistent with other jobs in the
full-build stage generated by gen_ci.hs. This allows the jobs to be
spawned earlier and improve overall pipeline parallelism.
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caaf5388 by Simon Hengel at 2024-11-25T14:02:41-05:00
Refactoring: Remove `pSupportedExts` from `ParserOpts`
This is never used for lexing / parsing. It is only used by
`GHC.Parser.Header.getOptions`.
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41f8365c by Arnaud Spiwack at 2024-11-25T14:03:23-05:00
Add test for #25515
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9279619f by Arnaud Spiwack at 2024-11-25T14:03:23-05:00
Desugar record notation with correct multiplicities
Simply uses the multiplicity as stored in the field. As I'm writing
this commit, the only possible multiplicity is 1, but !13525 is
changing this. It's actually easier to take !13525 into account.
Fixes #25515.
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fcc3ae6e by Andreas Klebinger at 2024-11-26T08:24:58-05:00
Clarify INLINE unfolding optimization docs.
Fixes #24660
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88c4fe1d by Cheng Shao at 2024-11-26T08:25:34-05:00
rts: remove -Wl,-U,___darwin_check_fd_set_overflow hack
This patch bumps macOS minimum SDK version to 11.0 for x86_64-darwin
to align it with aarch64-darwin. This allows us to get rid of the
horrible -Wl,-U,___darwin_check_fd_set_overflow hack, which is causing
linker warnings and testsuite failures on macOS 15. Fixes #25504.
- - - - -
53f978c0 by doyougnu at 2024-11-26T16:07:26-05:00
ghc-experimental: expose GHC.RTS.Flags, GHC.Stats
See this CLC proposal:
- https://github.com/haskell/core-libraries-committee/issues/289
and this CLC proposal for background:
- https://github.com/haskell/core-libraries-committee/issues/288
Metric Decrease:
MultiLayerModulesTH_OneShot
- - - - -
e70d4140 by Wang Xin at 2024-11-26T16:08:10-05:00
Add -mcmodel=medium moduleflag to generated LLVM IR on LoongArch platform
With the Medium code model, the jump range of the generated jump
instruction is larger than that of the Small code model. It's a
temporary fix of the problem descriped in https://gitlab.haskell
.org/ghc/ghc/-/issues/25495. This commit requires that the LLVM
used contains the code of commit 9dd1d451d9719aa91b3bdd59c0c6679
83e1baf05, i.e., version 8.0 and later. Actually we should not
rely on LLVM, so the only way to solve this problem is to implement
the LoongArch backend.
Add new type for codemodel
- - - - -
df42ba16 by Andreas Klebinger at 2024-11-27T11:40:49-05:00
Cmm constant folding: Narrow results to operations bitwidth.
When constant folding ensure the result is still within bounds
for the given type by explicitly narrowing the results.
Not doing so results in a lot of spurious assembler warnings
especially when testing primops.
- - - - -
bf3db97e by Ben Gamari at 2024-11-27T11:41:26-05:00
ghc-toolchain: Introduce basic flag validation
We verify that required flags (currently `--output` and `--triple`) are
provided. The implementation is truly awful, but so is getopt.
Begins to address #25500.
- - - - -
a104508d by Ben Gamari at 2024-11-27T11:42:03-05:00
rts: Allow ExecPage to allocate anywhere in address space
Currently the ExecPage facility has two users:
* GHCi, for constructing info tables, and
* the adjustor allocation path
Despite neither of these have any spatial locality constraints ExecPage
was using the linker's `mmapAnonForLinker`, which tries hard to ensure
that mappings end up nearby the executable image. This makes adjustor
allocation needlessly subject to fragmentation concerns.
We now instead return less constrained mappings, improving the
robustness of the mechanism.
Addresses #25503.
- - - - -
c3fc9b86 by Ben Gamari at 2024-11-27T11:42:39-05:00
base: Fix incorrect mentions of GHC.Internal.Numeric
These were incorrectly changed by the automated refactoring of the
`ghc-internal` migration.
Fixes #25521.
- - - - -
a362b943 by sheaf at 2024-11-27T23:44:28-05:00
Add checkExact to toolTargets
This change means that the Hadrian multi target will include exactprint.
In particular, this means that HLS will work on exactprint inside the GHC tree.
- - - - -
e6c957e4 by Arnaud Spiwack at 2024-11-27T23:45:09-05:00
Add test for #25428
- - - - -
52d97f4e by Arnaud Spiwack at 2024-11-27T23:45:09-05:00
Don't bypass MonoLocalBind in empty patterns
Fixes #25428
- - - - -
7890f2d8 by Ben Gamari at 2024-11-28T10:26:46-05:00
hadrian: Bump directory bound to >=1.3.9
Earlier versions of `directory` are racy on Windows due to #24382.
Also includes necessary Hadrian bootstrap plan bump.
Fixes #24382.
- - - - -
0fd43ea6 by Adam Sandberg Ericsson at 2024-11-28T10:27:22-05:00
mention -Iw in +RTS -?
- - - - -
6cf579b9 by Ben Gamari at 2024-11-28T10:27:59-05:00
gitlab-ci: Set GIT_SUBMODULE_FORCE_HTTPS
GitLab recommends using `https://` to clone submodules and provides the
`GIT_SUBMODULE_FORCE_HTTPS` variable to force this.
Fixes #25528.
- - - - -
5b4774f9 by sheaf at 2024-12-03T15:22:07+01:00
Remove TcRnDeprecatedInvisTyArgInConPat mechanism
The combination of ScopedTypeVariables + TypeApplications now no longer
enables the use of type applications in constructor patterns, as per
GHC proposal #448.
This completes the deprecation that begun with GHC 9.8.
We also remove the -Wdeprecated-type-abstractions flag, which was
introduced in GHC 9.10.
- - - - -
f813c8d7 by sheaf at 2024-12-03T17:10:15-05:00
Hadrian: use / when making filepaths absolute
In Hadrian, we are careful to use -/- rather than </>, in order to use
/ instead of \ in filepaths. However, this gets ruined by the use of
makeAbsolute from System.Directory, which, on Windows, changes back
forward slashes to backslashes.
- - - - -
292ed74e by Ben Gamari at 2024-12-03T17:10:52-05:00
rts/linker: Fix out-of-bounds mapping logic
Previously the structure of `mmapInRegion` concealed a subtle bug
concerning handling of `mmap` returning mappings below the beginning of
the desired region. Specifically, we would reset `p = result + bytes`
and then again reset `p = region->start` before looping around for
another iteration. This resulted in an infinite loop on FreeBSD.
Fixes #25492.
- - - - -
20912f5b by Ben Gamari at 2024-12-03T17:10:52-05:00
rts/linker: Clarify debug output
- - - - -
f98b3ac0 by Simon Hengel at 2024-12-03T17:11:30-05:00
SysTools: Avoid race conditions when processing output (fixes #16450)
- - - - -
03851b64 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
mg: Drop unnecessary HasCallStack
This HasCallStack was a debugging artifact from a previous commit.
- - - - -
01d213b5 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
Improve haddock of graphReachabilityCyclic
- - - - -
f7cbffe2 by Rodrigo Mesquita at 2024-12-03T17:12:06-05:00
Refactor ModuleGraph interface
The 'ModuleGraph' abstraction represents the relationship and strucutre
of the modules being compiled. This structure is meant to be constructed
once at the start of compilation, and never changed again.
However, it's exposed interface was confusing and exposed too many
footguns which led to inneficient usages of the ModuleGraph. This commit
improves significantly the exported interface of ModuleGraph, taking
into consideration the recent improvements around reachability queries.
Since the ModuleGraph graphs and related structures (HPT, EPS) are
performance critical in the sense that somewhat simple mistakes can
cause bad leaks and non-linear memory usage, we want to have proper APIs
that guide efficient usage. This is a good step in that direction.
- - - - -
b69a7f3c by David Binder at 2024-12-04T18:37:42-05:00
Use consistent capitalization for "GHC Proposal" in user guide
- - - - -
18d9500d by David Binder at 2024-12-04T18:37:42-05:00
Fix reference to GHC proposal 193 in user guide
- - - - -
dd959406 by Ben Gamari at 2024-12-04T18:38:18-05:00
Revert "rts/Interpreter: Assert that TEST*_P discriminators are valid"
This assertion was based on the misconception that `GET_TAG` was
returning the pointer tag whereas it is actually returning the
constructor tag.
This reverts commit 9bf3663b9970851e7b5701d68147450272823197.
Fixes #25527.
- - - - -
cad6fede by Ben Gamari at 2024-12-04T18:38:54-05:00
rts/IOManager: Drop dead code
This assignment is dead code as it occurs after all branches have
returned. Moreover, it can't possibly be relevant since the "available"
branch already sets `flag`.
Potentially fixes #25542.
- - - - -
55d8304e by Ben Gamari at 2024-12-06T16:56:00-05:00
ghc-internal: Drop GHC.Internal.Data.Enum
This module consists only of reexports and consequently there is no
reason for it to exist.
- - - - -
56b9f484 by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Introduce Data.Bounded
As proposed in [CLC#208] but unfortunately `Data.Enum` was already
incorrectly introduced in the `ghc-internal` refactor.
[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208
- - - - -
336d392e by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Deprecate export of Bounded from Data.Enum
This begins the process of bringing us into compliance with
[CLC#208].
[CLC#208]: https://github.com/haskell/core-libraries-committee/issues/208
- - - - -
dd7ca939 by Ben Gamari at 2024-12-06T16:56:00-05:00
base: Mention incorrect Data.Enum addition in changelog
- - - - -
dfd1db48 by Ben Gamari at 2024-12-06T16:56:36-05:00
base: Reintroduce {Show,Enum} IoSubSystem
These instances were dropped in !9676 but not approved by the CLC.
Addresses #25549.
- - - - -
090fc7c1 by Peter Trommler at 2024-12-07T03:41:21-05:00
Fix requirements on T25240
T25240 doesn't need RTS linker, GHCi is sufficient and GHCi can also be
dynamically linked.
- - - - -
3fb5d399 by Peter Trommler at 2024-12-07T03:41:21-05:00
Fix requirements for T25155
Loading C objects requires RTS linker.
- - - - -
4c58bdf6 by Leary at 2024-12-07T03:42:07-05:00
TH: Add typed variants of dataToExpQ and liftData
This commit introduces to template-haskell (via ghc-internal) two
functions `dataToCodeQ` and `liftDataTyped`, typed variants of
`dataToExpQ` and `liftData` respectively.
Tested in: `dataToCodeQUnit`.
- - - - -
63027593 by Serge S. Gulin at 2024-12-08T13:52:05+03:00
JS: Basic cleanup for unused stuff to simplify things.
1. Make `staticInitStat`, `staticDeclStat`, `allocUnboxedConStatic`, `allocateStaticList`, `jsStaticArg` local to modules.
2. Remove unused `hdRawStr`, `hdStrStr` from Haskell and JavaScript (`h$pstr`, `h$rstr`, `h$str`).
3. Introduce a special type `StaticAppKind` enumeration and `StaticApp` to represent boxed scalar static applications. Originally, StaticThunk supported to pass Maybe when it became Nothing for initializied thunks in an alternatie way but it is not used anymore.
- - - - -
a9f8f1fb by Serge S. Gulin at 2024-12-08T14:10:45+03:00
JS: Add trivial optimizations for `unpackCString` and `unpackCStringUtf8`.
It became possible due of introduction strings unfloating at Sinker pass (#13185). Earns few more bytes at optimizations.
- - - - -
b519c06b by Serge S. Gulin at 2024-12-08T15:50:26+03:00
JS: Specialize unpackCString# CAFs (fixes #24744)
Code analysis shown that such optimization would be possible out of the box if `cachedIdentForId` allowed to do that for Haskell `Id`s which are represented by few JavaScript `Ident`s. It is a usual for strings which are represented at JavaScript as a pair of 2 values: the string content and the offset where to start reading actual string from the full content. Usually offset is 0 but technically we need to allow such complex structures to be treated as "global".
Enabling it there shown that `genToplevelRhs` and `globalOccs` had inaccuracies in their implementations:
1. `globalOccs` operated over JavaScript's `Ident`s but for complex structures it didn't pay attention to the fact that different Idents actually could be pointed to same Id. Now the algo is changed to calculate occurencies for Ids.
2. `genToplevelRhs` didn't assume that different Idents pointed to same Id can have mixed order of occurence. But actually the order is important. Strings are encoded into 2 variables where first is content and second is offset and their order are not interchangeable. It is fixed by regeneration Idents from collected Ids which is fine because all Idents generation is passed through the Cache and they are quasi-stable.
- - - - -
a8ceccf3 by Brandon Chinn at 2024-12-09T16:25:43-05:00
Fix panic in multiline string with unterminated gap (#25530)
- - - - -
9e464ad0 by Brandon Chinn at 2024-12-09T16:25:43-05:00
Add test case for unterminated multiline string
- - - - -
ed1ed5c6 by Rodrigo Mesquita at 2024-12-09T16:26:19-05:00
Revert mapMG renaming
We had previously renamed this function for consistency, but that caused unnecessary breakage
- - - - -
158261f7 by Sylvain Henry at 2024-12-09T16:27:01-05:00
RTS: make Cabal flags manual
Cabal shouldn't automatically try to set them. We set them explicitly.
- - - - -
a83b7ed6 by Matthew Stephenson at 2024-12-10T14:01:22-05:00
Add missing @since documentation for (!?) function
- - - - -
e745e3a3 by Ben Gamari at 2024-12-10T14:01:59-05:00
compiler: Don't attempt to TSAN-instrument SIMD operations
TSAN only provides instrumentation for 8, 16, 32, and 64-bit memory
loads/stores. Don't attempt to instrument wider operations.
Fixes #25563.
- - - - -
684c0018 by Ben Gamari at 2024-12-10T14:02:35-05:00
gitlab/ci: Don't clobber RUNTEST_ARGS
Previously the logic handling `IGNORE_PERF_FAILURES` clobbered the
user's `RUNTEST_ARGS`. Fix this.
- - - - -
41dae5b8 by Ben Gamari at 2024-12-10T14:03:11-05:00
hadrian: Mitigate mktexfmt race
At least some versions of Texlive's `mktexfmt` utility cannot be invoked
concurrently in their initial run since they fail to handle failure of
`mkdir` due to racing. Specifically, we see
```
| Run Xelatex: users_guide.tex => /tmp/extra-dir-9616886274866
| Run Xelatex: Haddock.tex => /tmp/extra-dir-9616886274869
This is XeTeX, Version 3.14159265-2.6-0.999992 (TeX Live 2020) (preloaded format=xelatex)
restricted \write18 enabled.
kpathsea: Running mktexfmt xelatex.fmt
mktexfmt: mktexfmt is using the following fmtutil.cnf files (in precedence order):
mktexfmt: /usr/share/texlive/texmf-dist/web2c/fmtutil.cnf
mktexfmt: mktexfmt is using the following fmtutil.cnf file for writing changes:
mktexfmt: /builds/ghc/ghc/tmp-home/.texlive2020/texmf-config/web2c/fmtutil.cnf
/usr/bin/mktexfmt: mkdir(/builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c/) failed for tree /builds/ghc/ghc/tmp-home/.texlive2020/texmf-var/web2c: File exists at /usr/share/texlive/tlpkg/TeXLive/TLUtils.pm line 937.
I can't find the format file `xelatex.fmt'!
```
That is two `mktexfmt` invocations (for the user's guide and haddock
builds) attempted to create `$HOME/texlive2020/texmf-var/web2c` and
raced. One of the two `mkdir`'s consequently failed, bringing down the
entire build.
We avoid this by ensuring that the first `xelatex` invocation is always
performed serially.
Fixes #25564.
- - - - -
9efbc51f by Ben Gamari at 2024-12-10T14:03:48-05:00
rts/CheckUnload: Reset old_objects if unload is skipped
Previously `checkUnload` failed to reset `old_objects` when it decided
not to unload (e.g. due to heap profiling being enabled).
Fixes #24935.
- - - - -
5192a75f by Ben Gamari at 2024-12-11T04:28:11-05:00
rts: Annotate BCOs with their Name
This introduces a new bytecode instruction, `BCO_NAME`, to aid in debugging
bytecode execution. This instruction is injected by `mkProtoBCO` and
captures the Haskell name of the BCO. It is then printed by the
disassembler, allowing ready correlation with STG dumps.
- - - - -
99225996 by Ben Gamari at 2024-12-11T04:28:48-05:00
configure: Implement ld override whitelist
Bring `configure` into alignment with `ghc-toolchain`, ensuring that the
ld-override logic will only take effect on Linux and Windows.
Fixes #25501.
- - - - -
4a8fc928 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Unmark T14028 as broken on FreeBSD
This now appears to pass on FreeBSD 14.
Closes #19723.
- - - - -
d7c0eb5a by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Migrate FreeBSD runner tag to FreeBSD 14
- - - - -
7246dacc by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Reintroduce FreeBSD 14 job
- - - - -
4af936da by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Allow use of newer cabal-install bindists
Newer cabal-install bindists have internal directory structure.
Here we detect and account for the presence of such structure.
- - - - -
cbf38c1b by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Enable documentation build on FreeBSD 14
- - - - -
d68107fb by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Use system libffi on FreeBSD
- - - - -
fea3b590 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark linker_unload as broken on FreeeBSD
Due to #25491.
- - - - -
ccf171ee by Ben Gamari at 2024-12-11T12:33:42+00:00
gitlab-ci: Prefer system toolchain on FreeBSD
It's not uncommon to find machines with gcc installed via ports. We
should be using the system's default clang-based toolchain instead.
- - - - -
cfb34738 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark T21969 as broken on FreeBSD
Due to #25512.
- - - - -
0b64e37c by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark RestartEventLogging as broken on FreeBSD
I am seeing this fail quite reproducibly.
Due to #19724.
- - - - -
3b412019 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Mark T16180 as "broken" on FreeBSD
Sadly we in fact need to skip it as it merely times out during
compilation.
See #14012.
- - - - -
57e3cab5 by Ben Gamari at 2024-12-11T12:33:42+00:00
testsuite: Skip T16992 unless in slow speed
This test has extraordinary memory requirements and tests a rather
niche aspect of the compact region mechanism. It has been suggested
multiple times that we shouldn't run it in the default testsuite
configuration. Finally implement this.
See #21890.
See #21892.
- - - - -
f08a72eb by Ben Gamari at 2024-12-11T19:30:54-05:00
rts(setNumCapabilities): Assert that n_caps < MAX_N_CAPS
It was noticed in #25560 that this would previously be allowed,
resulting in a segfault.
I will add a proper exception in `base` in a future commit.
- - - - -
e10d31ad by Ben Gamari at 2024-12-11T19:30:55-05:00
ghc-internal: Fix inconsistent FFI import types
The foreign imports of `enabled_capabilities` and
`getNumberOfProcessors` were declared as `CInt` whereas they are defined
as `uint32_t`.
- - - - -
06265655 by Ben Gamari at 2024-12-11T19:30:55-05:00
rts: Mention maximum capability count in users guide
Addresses #25560.
- - - - -
d488470b by Ben Gamari at 2024-12-11T19:30:55-05:00
rts/Capability: Move induction variable declaration into `for`s
Just a stylistic change.
- - - - -
71f050b7 by Ben Gamari at 2024-12-11T19:30:55-05:00
rts: Determine max_n_capabilities at RTS startup
Previously the maximum number of capabilities supported by the RTS was
statically capped at 256. However, this bound is uncomfortably low given
the size of today's machine.
While supporting unbounded, fully-dynamic adjustment would be nice, it
is complex and so instead we do something simpler: Probe the logical
core count at RTS startup and use this as the static bound for the rest
of our execution.
This should avoid users running into the capability limit on large
machines while avoiding wasting memory on a large capabilities array for
most users and keeping complexity at bay.
Addresses #25560.
- - - - -
1e84b411 by Ben Gamari at 2024-12-11T19:30:55-05:00
testsuite: Introduce req_c_rts
As suggested by @hsyl20, this is intended to mark tests that rely on the
behavior of the C RTS.
- - - - -
683115a4 by Ben Gamari at 2024-12-11T19:30:55-05:00
testsuite: Add test for #25560
- - - - -
ef2052a8 by Ben Gamari at 2024-12-12T04:42:32-05:00
testsuite: Only run T14497_compact in normal way
This test targets the compacting GC so it makes little sense to run it
across all ways. Moreover, it outright conflicts with the `nonmoving`
way.
- - - - -
34d3e8e6 by Ben Gamari at 2024-12-12T04:43:08-05:00
rts/CheckUnload: Don't prepare to unload if we can't unload
Previously `prepareUnloadCheck` would move the `objects` list to
`old_objects` even when profiling (where we cannot unload). This caused
us to vacate the `objects` list during major GCs, losing track of loaded
objects. Fix this by ensuring that `prepareUnloadCheck` and
`checkUnload` both use the same short-cutting logic.
- - - - -
9c53489d by Andrei Borzenkov at 2024-12-12T15:06:42-05:00
Update GHCi :info type declaration printing (#24459)
- Do not print result's kind in type families
because we have full kind in SAKS and we display
invisible arity using @-binders
- Do not suppress significant invisible binders
An invisible binder is considered significant when it meets at least
one of the following two criteria:
- It visibly occurs in the declaration's body
- It is followed by a significant binder,
so it affects positioning
For non-generative type declarations (type synonyms and type families)
there is one additional criterion:
- It is not followed by a visible binder, so it
affects the arity of a type synonym
See Note [Print invisible binders in interface declarations]
for more information about what is "visibly occurs"
- - - - -
13fe48d4 by Matthew Pickering at 2024-12-12T15:07:19-05:00
typechecker: Perform type family consistency checks in topological order
Consider a module M importing modules A, B and C.
We can waste a lot of work depending on the order that the modules are
checked for family consistency.
Consider that C imports A and B. When compiling C we must have already
checked A and B for consistency, therefore if C is processed first then
A and B will not need to be checked for consistency again.
If A and B are compared first, then the consistency checks will be
performed against (wasted as we already performed them for C).
At the moment the order which modules are checked is non-deterministic.
Clearly we should engineer that C is checked before B and A, but by what
scheme?
A simple one is to observe that if a module M is in the transitive
closure of X then the size of the consistent family set of M is less
than or equal to size of the consistent family set of X.
Therefore by sorting the imports by the size of the consistent family
set and processing the largest first, you make sure to process modules
in topological order.
In practice we have observed that this strategy has reduced the amount
of consistency checks performed.
One solution to #25554
- - - - -
62a2b25f by Sylvain Henry at 2024-12-14T04:31:09-05:00
TNTC: set CmmProc entry_label properly (#25565)
Before this patch we were renaming the entry label of a CmmProc late in
the CmmToAsm pass. It led to inconsistencies and to some labels being
used in info tables but not being emitted (#25565).
Now we set the CmmProc entry label earlier in the StgToCmm monad and we
don't renamed it afterwards.
- - - - -
b339e7c3 by Simon Hengel at 2024-12-14T04:31:47-05:00
Make filter functionality for system tools line-based
This is more efficient as:
- All existing filter functions were line-based anyway. They broke up
the input into lines and then joined it back together.
- We already break up the output from system tools into lines when
processing it.
Splitting up the output of system tools once and then filtering and
processing it reduces both code and runtime complexity.
- - - - -
39669077 by Simon Hengel at 2024-12-14T04:31:47-05:00
Refactoring: Don't use a `Chan` when parsing SysTools output
- - - - -
64756530 by Simon Peyton Jones at 2024-12-14T22:28:04-05:00
Tidy up the handling of `assert`
Fixes #25493
- - - - -
8658fbc1 by Rodrigo Mesquita at 2024-12-14T22:28:41-05:00
base: displayException for SomeAsyncException
Provide a better implementation of `SomeException` for
`SomeAsyncException`.
The previous, implicit, implementation, would not use the
`displayException` of the exception wrapped by `SomeAsyncException`.
Implements CLC-Proposal#309
Closes #25513
- - - - -
2d3a0a70 by ARATA Mizuki at 2024-12-15T18:35:30-05:00
LLVM: When emitting a vector literal with ppTypeLit, include the type information
Fixes #25561
- - - - -
bfacc086 by Simon Peyton Jones at 2024-12-15T18:36:05-05:00
Fix signature lookup in instance declarations
This fixes a bug introduced by the fix to #16610
- - - - -
80f0e02d by Simon Peyton Jones at 2024-12-16T17:13:52+00:00
Improve GHC build times
Two small changes
* In GHC.Data.Unboxed, never omit interface pragmas. In "fast builds"
one might omit them generally, but doing so gives very bad
performance for code that imports this module.
* In GHC.Hs.Dump don't do type-class specialisation. For some reason
it goes mad and generates vast amounts of useless code. See #25463.
- - - - -
175a1355 by Simon Peyton Jones at 2024-12-16T17:13:52+00:00
Refactor Lint
Refactor Lint for two reasons:
* To improve performance
* To prepare for type-lets
The big changes are all in GHC.Core.Lint:
* Change the main APIs:
* `lintType` returns nothing rather than returning a `LintedType`;
* `lintCoercion` return nothing rather than returning a `LintedCoercion`
Reason: these functions did a lot of allocation to return a substituted
type/coercion that was often discarded, or used only to extract its kind.
Instead we now return nothing, and, when needed, extract the kind and
substitute.
* Applications are treated as a whole, by `lintApp`. By treating
multiple arguments all at once we avoid performing multiple
substitutions, each substituting a single type variable. This can
make an absolutely huge difference.
Overall this led to a pretty massive rewrite of Lint, with many smaller
changes.
Smaller chnages elsewhere
* Rename `GHC.Core.TyCo.Subst.getSubstInScope` to `substInScopeSet` for consistency
* Define and use `GHC.Core.Type.liftedTypeOrConstraintKind`
Performance. This MR someimtes gives gives a very large improvement in
compile time, when Lint is on. here is a selection of changes over 5%
in perf/compiler (with -dcore-lint)
T25196 -97.0%
T14766 -89.7%
T14683 -74.4%
T5631 -60.9%
T20261 -56.7%
T18923 -17.6%
T13035 -15.8%
T6048 -15.8%
CoOpt_Read -14.4%
T9630 -10.9%
T5642 -7.3%
Eliminating the egregious offenders is a big win.
However, in some cases the compiler allocation /increases/. Here ae the
changes over 1%:
T9961 1.5%
T8095 2.8%
T14052 3.9%
T12545 4.5%
T14052Type 5.5%
T5030 8.0%
T5321Fun 8.3%
T3064 12.7%
CoOpt_Singletons 15.6%
T9198 16.0%
LargeRecord 18.1%
I looked at the two biggest increases in compile-time bytes allocated. Interestingly,
they both show substantial *decreases* in actual compile time, due to much smaller GC times.
I'm honestly not sure either why the allocation increases, or why the GC time decreases;
but I'm going to take the win!
T9198
Baseline With patch
No Lint
Alloc 44.6M 44.6M
Mut time 0.23s 0.22s
GC time 0.21s 0.21s
With Lint
Alloc 309M 360M
Mut time 1.51s 0.85s
GC time 2.97s 0.25s
-------------------
LargeRecord
Baseline With patch
No Lint
Alloc 1.37G 1.37G
Mut time 2.33s 2.33s
GC time 2.40s 2.42s
With Lint
Alloc 3.4G 4.0G
Mut time 6.02s 5.68s
GC time 3.67s 3.03s
IMPORTANT NOTE: These changes don't show up in CI because in CI the
tests in perf/compiler are all run with -dcore-lint switched off. I
gathered this data with some manual runs.
- - - - -
8ef2dad6 by Simon Peyton Jones at 2024-12-17T02:48:09-05:00
Add Note [Typechecking overloaded literals]
See #25494.
- - - - -
e86b1b20 by Ben Gamari at 2024-12-17T13:51:39-05:00
testsuite: Use math.inf instead of division-by-zero
This both more directly captures the intent and also fixes #25580.
- - - - -
430d965a by Ben Gamari at 2024-12-17T13:52:15-05:00
rts: Fix incorrect format specifiers in era profiling
Fixes #25581.
- - - - -
267098ad by Andreas Klebinger at 2024-12-18T23:43:13-05:00
Document `-prof` and non `-prof` code being incompatible.
Fixes #25518.
- - - - -
04433916 by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metadata: output metadata fragment in CI
(cherry picked from commit 52b58a660e735b20961d792d8fa9267f01247a50)
- - - - -
7c78804e by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metatdata: use fedora33 for redhat
Redhat 9 doesn't have libtinfo.so.5 anymore
(cherry picked from commit dc86785eb43afd1bd292287c064fb5ad94fe8c7f)
- - - - -
1d72cfb2 by Zubin Duggal at 2024-12-18T23:43:50-05:00
ghcup metadata: still use centos for redhat <9
- - - - -
3f7ebc58 by Sylvain Henry at 2024-12-19T20:40:14-05:00
Merge ghc-bignum into ghc-internal (#24453)
First step towards merging ghc-bignum and ghc-prim into ghc-internal.
After this patch, ghc-bignum is deprecated and is just a shallow package
reexporting modules from ghc-internal and base. Use those directly
instead.
Move `gmp` submodule into ghc-internal directory.
- - - - -
ee0150c2 by Rodrigo Mesquita at 2024-12-19T20:40:51-05:00
Improve performance of deriving Show
Significantly improves performance of deriving Show instances by
avoiding using the very polymorphic `.` operator in favour of inlining
its definition. We were generating tons of applications of it, each
which had 3 type arguments!
Improves on #9557
-------------------------
Metric Decrease:
InstanceMatching
T12707
T3294
------------------------
- - - - -
8b266671 by Rodrigo Mesquita at 2024-12-19T20:40:51-05:00
Don't eta expand cons when deriving Data
This eta expansion was introduced with the initial commit for Linear
types.
I believe this isn't needed any longer. My guess is it is an artifact
from the initial linear types implementation: data constructors are
linear, but they shouldn't need to be eta expanded to be used as higher
order functions. I suppose in the early days this wasn't true.
For instance, this works now:
data T x = T x
f = \(x :: forall y. y -> T y) -> x True
f T -- ok!
T is linear, but can be passed where an unrestricted higher order
function is expected. I recall there being some magic around to make
this work for data constructors...
Since this works, there's no need to eta_expand the data constructors in
the derived Data instances.
- - - - -
1f67ad21 by Andrei Borzenkov at 2024-12-25T01:42:31-05:00
Flip the order of arguments of setField (#24668)
GHC Proposal 583 "HasField redesign" specifies the
following order of a setField function arguments as this:
setField :: forall fld a b. SetField fld a b. b -> a -> a
This patch flips the application order to match the spec.
- - - - -
3e0c948d by Ben Gamari at 2024-12-25T01:43:08-05:00
rel-eng/upload: Add set_symlink mode
This slightly eases updating of the `latest` symlinks.
- - - - -
63d63f9d by Simon Peyton Jones at 2024-12-25T01:43:45-05:00
Preserve orientation when unifying kinds
This MR fixes yet another manifestation of the trickiness caused
by Note [Fundeps with instances, and equality orientation].
I wish there was a more robust way to do this, but this fix is
a definite improvement.
Fixes #25597
- - - - -
94ba9a6a by ARATA Mizuki at 2024-12-26T10:47:57-05:00
x86 NCG SIMD: Support pack/insert/broadcast/unpack of 128-bit integer vectors
- - - - -
6bf0d587 by Andrew Lelechenko at 2024-12-26T10:48:33-05:00
docs: fix haddock formatting in Control.Monad.Fix
- - - - -
feb14af1 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Remove unnecessary irrefutable patterns from NonEmpty functions
Implementation of https://github.com/haskell/core-libraries-committee/issues/107
- - - - -
6a0d91b4 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Make cons, Semigroup, IsList, and Monad instances stricter
- - - - -
1249e597 by Sergey Vinokurov at 2024-12-27T15:06:28+00:00
Restore some laziness in <| and Semigroup instance, improve Monad instance
The Monad instance shouldn't produce the outer :| unless f a reduces
to WHNF. (Notice that the b :| bs match is implicitly lazy.)
- - - - -
8699d826 by Sergey Vinokurov at 2024-12-27T15:12:30+00:00
Add comment outlining Data.List.NonEmpty implementation guiding principles
- - - - -
7febe00e by Sergey Vinokurov at 2024-12-27T22:24:43+00:00
Fix tests since location of ‘>>=’ changed
- - - - -
a928c326 by ARATA Mizuki at 2024-12-28T03:06:14-05:00
Fix LLVM version detection
With a recent LLVM, `llc -version` emits the version on the first line
if the vendor is set. It emits the version on the second line
otherwise.
Therefore, we need to check the both lines to detect the version.
GHC now emits a warning if it fails to detect the LLVM version,
so we can notice if the output of `llc -version` changes in the future.
Also, the warning for using LLVM < 10 on s390x is removed, because
we assume LLVM >= 13 now.
This fixes the definition of __GLASGOW_HASKELL_LLVM__ macro.
Fixes #25606
- - - - -
7f79257a by Zubin Duggal at 2024-12-29T13:04:35+00:00
Bump base, ghc-prim and template-haskell versions for 9.12
Also bump various submodules.
(cherry picked from commit 6fc1fa3bdc8f53acdb19e47145789274060e498f)
Bump base bound to 4.21 for GHC 9.12
(cherry picked from commit 473a201c6b55aea5bf9c9db0836a66ea1b657e04)
Bump binary submodule to 0.8.9.2
(cherry picked from commit 7199869a52ab45e8856658248bf807954d58cc20)
(cherry picked from commit ec2f40b45c1a3d82d17a2fc07e9ddb9218bc3940)
Bump exceptions submodule to 0.10.9
(cherry picked from commit f5b5d1dc2d326368e5b173d622630d77f019b629)
Bump file-io submodule to 0.1.4
(cherry picked from commit ba786681de6ac5fa49938e2cd71a5988f0f40d1f)
bump os-string submodule to 2.0.6
(cherry picked from commit 3a7ffdbb832c045a55fd1ef24f546abdd9d9e30f)
bump transformers submodule to 0.6.1.2
(cherry picked from commit 53b46fd437421b9e5a001edc6d1c427439d7714f)
Bump directory submodule to v1.3.9.0
(cherry picked from commit 27dc2664c5404bb462092bb216c2c37b418fd1f8)
Bump Win32 submodule to v2.14.1.0
(cherry picked from commit 80df88086180f5e39212b2feacf70a9d2b263c6c)
Bump filepath submodule to 1.5.3.0
(cherry picked from commit 29bfae2c58a7303a081a6e7956b9f55e5faf3eeb)
Bump file-io submodule to avoid usage of QuasiQuotes
(cherry picked from commit 97b0dff223a6c4cc003adec448104c277f214645)
Bump unix submodule to 2.8.6.0
(cherry picked from commit a1f56d6d6a99c100f88ef0a8b4d51298cf24a42d)
Bump os-string submodule to 2.0.8
(cherry picked from commit 0121b76fd52ea0c0ce5d07085bc195666b63c625)
Bump file-io submodule to avoid usage of QuasiQuotes
(cherry picked from commit 962ceb50c8a6fc370e1c0a267f5cd5562a8cf759)
Bump filepath submodule to 1.5.4.0
(cherry picked from commit 7bc6877fd5d41c6d5900678ad5e73ed30f366569)
Bump file-io submodule to 0.1.5
(cherry picked from commit 9478b5aefe2877d58baf527edcf936dddbb955b7)
Bump Cabal submodule to 3.14.1.0
(cherry picked from commit 5c9c3e3f79a79bb6d9a77a17c716dc3a0bcbd2aa)
Bump directory submodule to 0.12.2.0
(cherry picked from commit 897906265db37af34ae2aaa016cec417f263407b)
Bump array submodule for base bump
Bump stm submodule for base bump
Bump process submodule for base bump
- - - - -
f6079408 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Fix ghc-e005 after HasCallstack changes
(cherry picked from commit 77f340a24561cea8a6f2ada296b3ea356ab1823c)
- - - - -
3e10fa75 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Add haskeline to stage0Packages
Otherwise we link against boot inplace and boot unix as boot haskeline
depends on boot unix.
(cherry picked from commit 90b493769ebdf3cd7be404d18462dc20ac1044df)
- - - - -
4ad6aec4 by Zubin Duggal at 2024-12-29T13:04:35+00:00
Fix TH changelog
- - - - -
ea3f7fd5 by Zubin Duggal at 2024-12-29T13:04:35+00:00
release: copy index.html from correct directory
(cherry picked from commit cbfd0829cd61928976c9eb17ba4af18272466063)
- - - - -
fafb70db by Zubin Duggal at 2024-12-29T13:04:35+00:00
hadrian-multi: warn on unused imports
os-string has redundant imports
(cherry picked from commit dde3796be689ea57543936e22aa5ea4ef7ed995e)
- - - - -
c02b1e46 by Simon Peyton Jones at 2024-12-29T17:04:30-05:00
Fix in-scope set for CSE
Ticket #25468 showed an assertion failure in CSE because a top-level
Id was being used before it was defined. Reason: Note [Glomming] in
GHC.Core.Opt.OccurAnal.
Solution (used in many places): just put all the top-level bindings in
scope at the beginning of CSE.
Compile-time allocation wobbles up and down a tiny bit; geo mean is
zero. But MultiLayerModulesTH_OneShot and hard_hole_fits increase (on
some architectures only) by a bit oever 2% . I think these are just a
random fluctuations.
Metric Increase:
MultiLayerModulesTH_OneShot
hard_hole_fits
- - - - -
559d4f84 by Krzysztof Gogolewski at 2024-12-30T11:53:19-05:00
Add tests for #23883
The issue has been fixed by commit f5d3e03c56ffc63.
Only T23883a is the actual regression test, the remaining ones are
tricky cases found during development of an independent fix !11313.
- - - - -
278a53ee by Sergey Vinokurov at 2024-12-30T11:53:59-05:00
Update changelog for CLC proposal #107 (NonEmpty laziness)
- - - - -
f56558be by Matthew Pickering at 2025-01-07T13:53:03-05:00
warnings: Find out if a qualified name is in the interactive scope directly
There were two ad-hoc mechanisms used to determine which modules were in
the interactive scope.
1. Look at everything in the GRE, to see what is imported qualified.
2. Look at the last loaded module in the HPT.
(1) Is very inefficient, GlobalRdrEnvs can be very big.
(2) is incorrect, there is no reason to assume the "last" thing added to
the HPT has any relevance to module loading order.
Happily, the same checks can be implemented directly by looking at the
interactive imports from the interactive context. This mirrors what
happens for normal imports.
Arguably, the error reporting code shouldn't be doing this kind of
processing and it should be an option is set when rendering the error
message. However, this just improves the situation and doesn't block
progress on that front in future.
See #14225 and #15611
Fixes #25600
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84155cdb by Simon Peyton Jones at 2025-01-07T13:53:40-05:00
Tidy up kcConDecls
Addresses #25630
In particular,
* Introduce ConArgKind and use it.
* Make kcConDecls and tcConDecls work the same way
concerning the kind of argument types
- - - - -
6c12b6cf by Bryan Richter at 2025-01-07T18:15:02-05:00
Remove tmp files after toolchain check
Fixes #25620
- - - - -
42826a89 by Cheng Shao at 2025-01-07T18:15:39-05:00
xxhash: bump to v0.8.3
- - - - -
185f17e4 by sheaf at 2025-01-07T18:16:15-05:00
Fix typo in GHC.Tc.Solver.Solve.runTcPluginsWanted
- - - - -
23099752 by Luite Stegeman at 2025-01-08T00:33:33+01:00
Add flags for switching off speculative evaluation.
We found that speculative evaluation can increase the amount of
allocations in some circumstances. This patch adds new flags for
selectively disabling speculative evaluation, allowing us to
test the effect of the optimization.
The new flags are:
-fspec-eval
globally enable speculative evaluation
-fspec-eval-dictfun
enable speculative evaluation for dictionary functions (no effect
if speculative evaluation is globally disabled)
The new flags are on by default for all optimisation levels.
See #25284
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0161badc by Ben Gamari at 2025-01-09T17:30:05-05:00
rts/printClosure: Print IPE information for thunks and functions
This makes it considerably easier to grok the structure of the heap
when IPE information is available.
- - - - -
023f36f5 by Rodrigo Mesquita at 2025-01-10T14:57:48-05:00
user_guide: Note -pgmP/-optP are for /Haskell/-CPP
Fixes #25574
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e1c133f2 by Ben Gamari at 2025-01-10T14:58:25-05:00
dump-decls: Suppress unit-ids
While the testsuite driver already normalizes these away, they are
nevertheless a severe nuisance when diffing outside of the testsuite.
Intriguingly, this doesn't completely eliminate the unit IDs; some
wired-in names are still printed. However, this is a cheap and helpful
improvement over the status quo so I am simply going to accept this.
Fixes #25334.
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2e7bf446 by sheaf at 2025-01-13T10:55:26+01:00
Remove SDocs from ErrCtxt & ErrInfo
This commit:
- turns the SDoc used in ErrCtxt into a proper error datatype,
ErrCtxtMsg, which contains all the different error contexts that
can be added,
- replaces ErrInfo with [ErrCtxt].
ErrInfo used to contain two SDocs; the first is replaced with [ErrCtxt],
and the second is removed, with the relevant information being put
in the appropriate error message constructors.
Fixes #23436
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2d62b970 by Mike Pilgrem at 2025-01-13T12:59:10-05:00
Re CLC #300 - Specify fmap for NonEmpty as map
See:
* https://github.com/haskell/core-libraries-committee/issues/300
Seeks to:
* move existing instances for NonEmpty (except of Eq and Ord) out of GHC.Internal.Base into new GHC.Internal.Data.NonEmpty (to avoid otherwise unavoidable cycles in the module graph);
* move map out of Data.List.NonEmpty (base package) into GHC.Internal.Data.NonEmpty;
* define fmap as map for NonEmpty instance of Functor, avoiding code duplication;
* re-export map from existing GHC.Internal.Data.List.NonEmpty; and
* re-export map from Data.List.NonEmpty (base package);
without breaking anything in the GHC repository.
Various tests *.stdout and *.stderr files are amended also.
- - - - -
ab3ab3e3 by Luite Stegeman at 2025-01-13T12:59:58-05:00
compiler/coreprep: Turn off dictionary speculation by default
Speculative evaluation can cause performance regressions,
therefore we turn it off by default. It can be enabled again
with the -fspec-eval-dictfun flag
See #25284
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3d9cacd5 by Patrick at 2025-01-14T02:34:46+08:00
Enhance kind inference for data family instances
This commit improves kind inference for data family instances by kind-checking
the constructors, for H98 and newtype declarations (ONLY), as well as
kind-checking the result kind signature (when using GADT syntax).
This fixes #25611.
Typechecker changes:
In `tcDataFamInstHeader`, we now kind-check the constructors using
`kcConDecls`, for H98-style decls and newtype decls ONLY.
See Note [Kind inference for data family instances].
Testsuite changes:
- The T25611{a,b,c,d} tests test the new kind inference implementation.
- a,b: infer result kind from constructors (H98 case)
- c: renamed version of test UnliftedNewtypesUnassociatedFamilyFail,
which now passes
- d: GADT case, checking that we don't infer overly rigid kinds when
kind-checking the constructors in data family instances.
- DataInstanceKindsDefaults tests defaulting data instance kinds
without UnliftedNewtypes or UnliftedDatatypes, as outlined in
Note [Defaulting result kind of newtype/data family instance].
Also a few notes are updated to reflect the changes.
Co-authored-by: default avatarSimon Peyton Jones <simon.peytonjones at gmail.com>
- - - - -
f6493dbc by amesgen at 2025-01-15T18:47:23-05:00
wasm: prevent bundlers from resolving import("node:timers")
This fixes the following esbuild error:
✘ [ERROR] Could not resolve "node:timers"
www/ghc_wasm_jsffi.js:66:25:
66 │ return (await import("node:timers")).setImmediate;
╵ ~~~~~~~~~~~~~
The package "node:timers" wasn't found on the file system but is built into node. Are you trying
to bundle for node? You can use "--platform=node" to do that, which will remove this error.
Previously (i.e. after !13503), one had to work around this by passing
`--external:node:timers`.
- - - - -
87e82e2e by sheaf at 2025-01-16T14:51:45+01:00
Use checkTyEqRhs to make types concrete
This commit refactors makeTypeConcrete to call checkTyEqRhs with
the appropriate parameters. This avoids duplicating subtle logic
in two places in the compiler.
Changes:
1. Refactor of 'TyEqFlags'. Now 'TyEqFlags' stores a 'TEFTask', which
is a description of which of the following checks we want to
perform in 'checkTyEqRhs':
- occurs check
- level check
- concreteness check
In the process, the 'AreUnifying' datatype has been removed, as it
is no longer needed.
2. Refactor of 'checkTyVar':
a. Make use of the new 'TEFTask' data type to decide which checks
to perform.
In particular, this ensures that we perform **both** a
concreteness check and a level check when both are required;
previously we only did a concreteness check (that was a bug!).
b. Recursively call 'checkTyVar' on the kind of unfilled
metavariables. This deals with a bug in which we failed to
uphold the invariant that the kind of a concrete type must
itself be concrete. See test cases T23051, T23176.
3. Re-write of 'makeTypeConcrete', which now simply calls
'checkTyEqRhs' with appropriate 'TyEqFlags'/'TEFTask'.
This gets rid of code duplication and risk for the two code paths
going out-of-sync.
Fixes #25616. See also #23883.
- - - - -
5a8f35bd by ARATA Mizuki at 2025-01-17T11:17:49-05:00
x86 NCG: Use correct format for MOVD in the implementation of unpackInt64X2#
MOVD takes the input format.
Fixes #25658
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14f8a7ec by Mateusz Goślinowski at 2025-01-17T22:49:09+00:00
Allow multiline strings in JS FFI (#25633)
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854c2f75 by Simon Peyton Jones at 2025-01-18T02:54:08-05:00
Fix a buglet in tcSplitForAllTyVarsReqTVBindersN
The problem was that an equation in `split` had two guards (one about
visiblity and one about `n_req`). So it fell thorugh if /either/
was False. But the next equation then assumed an invisible binder.
Simple bug, easily fixed. Fixes #25661.
- - - - -
264a1186 by sheaf at 2025-01-18T10:05:56+00:00
Generalise GHC diagnostic code infrastructure
This commit generalises the infrastructure used for diagnostic codes,
allowing it to be used for other namespaces than the GHC namespace.
In particular, this enables GHCi to re-use the same infrastructure to
emit error messages.
- - - - -
bf4f5ad3 by Jade at 2025-01-18T10:05:56+00:00
Add structured errors to GHCi (#23338)
This patch creates the 'GhciCommandErrorMessage' data type which
implents the 'Diagnostic' class and also provides error code for these
error conditions.
- - - - -
b6f54188 by Ben Gamari at 2025-01-18T12:38:46-05:00
Revert "Division by constants optimization"
This appears to be responsible for the regression described in #25653.
This reverts commit daff1e30219d136977c71f42e82ccc58c9013cfb.
- - - - -
0fd90de8 by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Introduce div2 test
This is a useful test from !8392 which is worth keeping around.
- - - - -
32680979 by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Test shift correctness in mul2 test
- - - - -
163aa50a by Ben Gamari at 2025-01-18T12:38:46-05:00
testsuite: Add regression test for #25653
- - - - -
44778963 by Matthew Pickering at 2025-01-20T11:23:08+00:00
driver: Store an ExternalModuleGraph in the EPS
We now store an ExternalModuleGraph in the EPS. When an new interface is
loaded, the module graph is extended with a node for the loaded
interface. The result is a partial module graph. If you want to run
a transitive closure query on the graph you must first force the
transitive closure to be loaded by using `loadExternalGraphBelow`.
The primary advantage (for now) is that the transitive dependency
calculation does not have to be repeated in getLinkDeps. If your module
had many dependencies and many splices, performing this calculation at
every splice site took a significant amount of time.
We might also want to use this module graph in future for considering
questions such as reachability of rules or accessibilty of instance
imported by levelled imported.
This patch removes another place in the compiler where transitive
dependency is calculated in an ad-hoc manner. In general, the transitive
dependency calculation should be cached and computed using a ModuleGraph
abstraction.
The transitive dependency query required by getLinkDeps operates on a
graph without hs-boot nodes. If a linkable from a module in a loop is
needed, then all modules in the loop are necessary to be available to
execute that module. Therefore there is a query in `ModuleGraph` and
`ExternalModuleGraph` which allows a transitive closure query to be
performed on a graph without loops.
Fixes #25634
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
Metric Increase:
mhu-perf
-------------------------
Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita at gmail.com>
- - - - -
b3c0acfc by Cheng Shao at 2025-01-20T11:53:10-05:00
hie: fix hie.yaml to use default hie-bios script
!13778 accidentally changed hie.yaml to use hie-bios.bat as the
default hie-bios script, which completely breaks hie support on
non-Windows platforms. This patch reverts that change.
- - - - -
595013d4 by Ben Gamari at 2025-01-21T09:57:23-05:00
compiler: Fix CPP guards around ghc_unique_counter64
The `ghc_unique_counter64` symbol was introduced in the RTS in the
64-bit unique refactor (!10568) which has been backported to %9.6.7 and
%9.8.4. Update the CPP to reflect this.
Fixes #25576.
- - - - -
09ee3247 by Ryan Scott at 2025-01-21T09:58:00-05:00
Fix :info pretty-printing of UNPACKed fields
This patch:
* Ensures that we do not pretty-print a field like `foo :: {-# UNPACK #-} !Int`
as `foo :: ! {-# UNPACK -#} Int` (as we were doing before) when running the
`:info` command.
* Prevents coercions that arise from `UNPACK`ed fields (e.g., such as when one
unpacks a newtype) from being printed in `:info` output unless `-dppr-debug`
is enabled.
Fixes #25651.
- - - - -
6b7ea592 by Rodrigo Mesquita at 2025-01-21T16:10:35-05:00
driver: Store the HomePackageTable in a mutable reference
This commit refactors the HomePackageTable and HomeUnitGraph:
(1) It fixes a quadratic-in-the-number-of-modules space leak in upsweep (#25511)
(2) And it reworks these structures into their own modules to simplify
the driver. The refactor is driven by the introduction of IO in the HPT
interface, but is a bit more aggressive in simplifying the
interfaces to enforce correct usage (ie to avoid performance
pitfalls).
Specifically:
- The `HomeUnitGraph` (HUG) is now in `GHC.Unit.Home.Graph`
- The `HomePackageTable` (HPT) is now in `GHC.Unit.Home.PackageTable`
- The HPT now stores an `IORef` with the table of loaded home package modules.
- The interface to the HPT now requires IO
- The interface now enforces that the HPT is a datastructure that
only grows
- This is not enforced in the interface, but, clients of the HPT
should never care about there being more or less entries in the
HPT when these additional entries are not relevant to their result.
- The exception to the invariant that the HPT is monotonically
increasing is `restrictHpt`, a function which is called at a
"barrier point" (during which there are no other threads
inspecting or inserting in the HPT). The invariant can be
temporarily broken at this point (currently, after upsweep).
This is safe because a single thread holds control over the
structure (thus the invariant being broken is never observed).
The hug_var and associated structures in the driver, which aimed to
improve memory usage in the driver by updating in place a HUG during
upsweep, are no longer required as the HPT entries in the HUG are now
themselves mutable by construction. This was previously explained in
Note [ModuleNameSet, efficiency and space leaks], which is no longer
relevant and was deleted.
Fixes #25511
Co-authored-by: Matthew Pickering <matthewtpickering at gmail.com>
-------------------------
Metric Decrease:
MultiComponentModulesRecomp
MultiLayerModulesRecomp
-------------------------
- - - - -
f983a00f by Jens Petersen at 2025-01-21T16:11:12-05:00
hp2ps/Utilities.c: add extern parameter types for malloc and realloc for C23
Fix build with gcc-15 which defaults to C23 standard (-std=gnu23)
Fixes #25662
```
utils/hp2ps/Utilities.c:6:14: error:
warning: conflicting types for built-in function ‘malloc’; expected ‘void *(long unsigned int)’ [-Wbuiltin-declaration-mismatch]
6 | extern void* malloc();
| ^~~~~~
|
6 | extern void* malloc();
| ^
utils/hp2ps/Utilities.c:5:1: error:
note: ‘malloc’ is declared in header ‘<stdlib.h>’
4 | #include "Error.h"
+++ |+#include <stdlib.h>
5 |
|
5 |
| ^
utils/hp2ps/Utilities.c: In function ‘xmalloc’:
utils/hp2ps/Utilities.c:80:17: error:
error: too many arguments to function ‘malloc’; expected 0, have 1
80 | r = (void*) malloc(n);
| ^~~~~~ ~
|
80 | r = (void*) malloc(n);
| ^
utils/hp2ps/Utilities.c:6:14: error:
note: declared here
6 | extern void* malloc();
| ^~~~~~
|
6 | extern void* malloc();
| ^
utils/hp2ps/Utilities.c: In function ‘xrealloc’:
utils/hp2ps/Utilities.c:92:18: error:
warning: conflicting types for built-in function ‘realloc’; expected ‘void *(void *, long unsigned int)’ [-Wbuiltin-declaration-mismatch]
92 | extern void *realloc();
| ^~~~~~~
|
92 | extern void *realloc();
| ^
utils/hp2ps/Utilities.c:92:18: error:
note: ‘realloc’ is declared in header ‘<stdlib.h>’
|
92 | extern void *realloc();
| ^
utils/hp2ps/Utilities.c:94:9: error:
error: too many arguments to function ‘realloc’; expected 0, have 2
94 | r = realloc(p, n);
| ^~~~~~~ ~
|
94 | r = realloc(p, n);
| ^
utils/hp2ps/Utilities.c:92:18: error:
note: declared here
92 | extern void *realloc();
| ^~~~~~~
|
92 | extern void *realloc();
| ^
```
- - - - -
51e3ec83 by Vladislav Zavialov at 2025-01-22T20:41:32+03:00
Rework built-in and punned names (#25174, #25179, #25180, #25182)
This patch rewrites part of the logic for dealing with built-in and
punned names, making it more principled and fixing a few bugs.
* Kill off filterCTuple. Its purpose was to improve pretty-printing of
constraint tuples, and the appropriate place for this is namePun_maybe.
* Remove unitTyCon, unboxedUnitTyCon, and soloTyCon from wiredInTyCons.
Their inclusion in the list was a workaround for shoddy logic in
lookupOrigNameCache. Now we treat tuples of all arities uniformly.
* In isBuiltInOcc_maybe, only match on actual built-in syntax, e.g. "FUN"
shouldn't be there (#25174). Also take ListTuplePuns into account (#25179).
* When matching OccNames, use the ShortByteString directly to avoid
potentially costly conversions to ByteString and String.
* Introduce isInfiniteFamilyOrigName_maybe, a purpose-built helper for
looking up tuples/sums in the OrigNameCache. This clears up the previously
convoluted relation between the orig name cache and built-in syntax.
* Reuse isKnownOrigName_maybe to eliminate the need for isPunOcc_maybe.
* Classify MkSolo and MkSolo# as UserSyntax, thus fixing whole-module
reexports (#25182).
* Teach valid-hole-fits about tuples, unboxed tuples, and unboxed sums,
up to a certain arity (#25180).
* Drop the unnecessary special case for unary constraint tuples in the
type checker (finish_tuple). It was a workaround for the lack of CSolo.
* Update Notes and other comments, add tests.
- - - - -
85c60aea by Teo Camarasu at 2025-01-23T18:06:21-05:00
doc: Add documentation for -XDoAndIfThenElse
Resolves #18631
Co-authored-by: Richard Eisenberg <rae at cs.brynmawr.edu>
- - - - -
4495e48f by Brandon Chinn at 2025-01-24T11:54:24-05:00
Break out GHC.Parser.Lexer.Interface
- - - - -
4f8fc11e by Brandon Chinn at 2025-01-24T11:54:24-05:00
Fix lexing comments in multiline strings (#25609)
Metric Decrease:
MultiLayerModulesRecomp
parsing001
- - - - -
e7ab778f by Matthew Pickering at 2025-01-24T11:55:01-05:00
testsuite: Pass TEST_HC_OPTS to many more tests
This passes `-dno-debug-output` to the test and `-dlint.
- - - - -
c3593101 by Sylvain Henry at 2025-01-24T23:12:20-05:00
Merge ghc-prim's modules into ghc-internal (#24453)
ghc-internal becomes the only wired-in package exposing primitives.
There are some minor GHC allocation regressions, but they barely cross
the thresholds and only with the wasm backend. They're likely due to
longer symbols (ghc-internal vs ghc-prim, GHC.Internal.X vs GHC.X).
Metric Increase:
T13035
T1969
T4801
T9961
- - - - -
70f7741a by Jens Petersen at 2025-01-24T23:12:58-05:00
hp2ps/Utilities.c: add extern parameter types for malloc and realloc for C23
use portable C types!
- - - - -
a1d92378 by Brandon Chinn at 2025-01-25T15:11:54-08:00
Fix for alex-3.5.2.0 (#25623)
This INLINE pragma for alexScanUser was added in 9.12, but then I
ported the change to alex in 3.5.2.0
(https://github.com/haskell/alex/pull/262).
I didn't realize that GHC errors on duplicate INLINE pragmas, so
this ended up being a breaking change.
This change should be backported into 9.12
- - - - -
62760367 by ARATA Mizuki at 2025-01-27T16:23:06-05:00
x86 NCG: Make MOVD's output format explicit
The old design led to inference of a wrong format,
losing upper bits of a vector register.
Fixes #25659
Co-authored-by: sheaf <sam.derbyshire at gmail.com>
- - - - -
f19ab490 by Simon Hengel at 2025-01-27T16:23:45-05:00
doc: Correct JSON schema for `-fdiagnostics-as-json` (fixes #25393)
- - - - -
e16eae65 by Cheng Shao at 2025-01-27T21:41:39+00:00
hadrian: fix bootstrap with 9.12.1
This patch bumps hadrian index-state to fix bootstrap with 9.12.1.
- - - - -
8071bad8 by Jeffrey Young at 2025-01-28T21:45:32-05:00
base: add SrcLoc changes to changelog, 4.21.0.0
I accidentally dropped this in !13381
- closes #25614
See:
- ea4587794b9e3a098f9c02bd6cea2294af2539ce (the 13381 commit)
- Issue #25614
- - - - -
9dcc7e28 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Rename `cloneBndrs` and such — now all the monadic ones have an `M` suffix.
We now have `cloneBndrs` and `cloneRecIdBndrs` which take a `UniqSupply` argument, and `cloneBndrsM` and `cloneRecIdBndrsM` which rather have a `MonadUnique` constraint.
- - - - -
643dd3d8 by Matthew Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in unique generation, and clean up some other partial uni patterns as well.
Also drop the losing `instance MonadFail UniqSM`.
We redefine `getUniquesM` in terms of `Infinite` rather than `[]`, and define another method `getUniqueListM` for the use sites where we actually want a `[]`.
Thus, at many sites, we can avoid the partiality of the empty list case.
We also define `withUniques`, `withUniquesM`, and `withUniquesM'`, which traverse an arbitrary `Traversable` structure and introduce a `Unique` for each element.
This allows us to redefine various functions to operate on more appropriate types than `[]` and avoid further partiality (in the form of incomplete-uni-patterns).
- - - - -
dd0acc3c by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in `GHC.Tc.Deriv.Functor`.
Make the list of variables to use in generated code `Infinite`, to avoid panicking on the (now impossible) empty list case.
- - - - -
4e9adedf by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Use `Infinite` in `GHC.Runtime.Debugger`.
Make the list of available names `Infinite`, to avoid panicking on the (now impossible) empty list case.
- - - - -
bed812b7 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.Cmm.DebugBlock`.
We do so by changing the type of `BlockContext` to statically (in GHC) exclude the possibility of Cmm statics, and using `NonEmpty` lists of `BlockContext`s in `cmmDebugGen`.
- - - - -
27587df3 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.Types.Literal`.
We do so by introducing `mkLitNumberWrap'` whose ultimate codomain is `Integer` rather than `Literal`, and then use that rather than `mkLitNumberWrap` where we just need the number rather than the `Literal`.
- - - - -
138de0ff by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Avoid incomplete-uni-patterns in `GHC.CmmToAsm.X86.CodeGen`.
- Match the vector element list only once in `shuffleInstructions`.
- Define `isSuitableFloatingPointLit_maybe` which returns `Just` the width if the lit is indeed suitable.
- - - - -
d8cb3d36 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Clean up more incomplete uni patterns.
At some sites, we merely panic if the `[]` or `Maybe` is empty when we convert to `NonEmpty` or `Identity`, but at least now we make it explicit.
At other sites, we are able to use more precise types and avoid the partiality altogether. To do so, we redefine various functions to operate over `Traversable` arguments, so we can use the appropriate shape where known.
- - - - -
f251bd22 by M Farkas-Dyck at 2025-01-29T02:27:48-05:00
Outline `expectJustPanic`.
- - - - -
a963a1a5 by Marc Scholten at 2025-01-29T02:28:35-05:00
base: Introduce Data.Enum.enumerate (CLC #306)
https://github.com/haskell/core-libraries-committee/issues/306
- - - - -
944712da by Ben Gamari at 2025-01-29T02:29:13-05:00
base: Update description of locking behavior
- - - - -
85abc69c by Ben Gamari at 2025-01-29T02:29:51-05:00
base: Fix @since annotation of Data.Bounded
Fixes #25615.
- - - - -
2ca41c62 by Ben Gamari at 2025-01-29T02:30:29-05:00
StgToByteCode: Fix overly-broad handling of Addr# literals
Previously we assumed that all unlifted types were `Addr#` but this
isn't true. As noted in #25638, unlifted nullary data constructor
workers can also appear at the top-level and are obviously not of type
`Addr#`.
Note that there is more work to be done to properly handle unlifted data
constructors (especially nullary; see #25636). However, this is a small
step in the right direction.
Closes #25641.
- - - - -
ec26c54d by Ben Gamari at 2025-01-29T02:30:29-05:00
StgToByteCode: Assert that PUSH_G'd values are lifted
We currently do not support top-level unlifted data constructor applications,
therefore this is a safe assertion.
Pointed out by @sheaf.
- - - - -
8847125f by Ben Gamari at 2025-01-29T02:31:07-05:00
gitlab-ci: Run test-primops testsuite in ~"full-ci" pipeline
Closes #25654.
- - - - -
bf8c7d6e by Matthew Pickering at 2025-01-29T02:31:44-05:00
bytecode: Do not generate `SLIDE x 0` instructions
SLIDE x 0 is a no-op as it means to shift x elements of the stack by no
spaces. In the interpreter, this results in a loop which copies an array
element into the same place.
I have instrumented GHCi to count how many of these instructions are interpreted.
The workload was `ghc` compiling two simple modules.
Total no-op slides: 7793476
Total slides: 11413289
Percentage useless (slides): 68%
Percentage uselss of total instructions: 9%
- - - - -
7bfc93a7 by Zubin Duggal at 2025-01-29T21:41:17-05:00
hackage-doc-tarball: Allow ghc-boot-th to be uploaded to hackage
It can't refer to files outside its source directory, so patch that part out.
This is OK because those files are only used while bootstrapping.
Also add ghci to the list of packages to be uploaded
Fixes #25687
- - - - -
704eeb02 by Roman S at 2025-01-29T21:42:05-05:00
Fix Control.Arrow (***) diagram (fixes #25698)
- - - - -
662645f0 by Matthew Pickering at 2025-02-03T11:44:41-05:00
compiler: Always load GHC.Data.FastString optimised into GHCi
The FastString table is shared between the boot compiler and interpreted
compiler. Therefore it's very important the representation of
`FastString` matches in both cases. Otherwise, the interpreter will read
a FastString from the shared variable but place the fields in the wrong
place which leads to segfaults.
Ideally this state would not be shared, but for now we can always
compile both with `-O2` and this leads to a working interpreter.
- - - - -
05e5785a by Peter Trommler at 2025-02-03T11:45:17-05:00
RTS: Fix compile on powerpc64 ELF v1
Cabal does not know about the different ABIs for powerpc64 and compiles
StgCRunAsm.S unconditionally. The old make-based build system excluded
this file from the build and it was OK to signal an error when it was
compiled accidentally.
With this patch we compile StgCRunAsm.S to an empty file, which fixes
the build.
Fixes #25700
- - - - -
cbbb64fb by Matthew Pickering at 2025-02-03T23:40:33-05:00
interpreter: Always print unit and module name in BCO_NAME instruction
Currently the BCO_Name instruction is a bit difficult to use since the
names are not qualified by the module they come from. When you have a
very generic name such as "wildX4", it becomes impossible to work out
which module the identifier comes from.
Fixes #25694
- - - - -
764a43ac by Ben Gamari at 2025-02-03T23:41:10-05:00
upload-ghc-libs: Drop more references to ghc-internal from ghc-boot-th
(cherry picked from commit afec4b75c2d0e9f5c462a86d9f3697acf30355c7)
Co-authored-by: Ben Gamari <bgamari.foss at gmail.com>
- - - - -
9a59b026 by Ben Gamari at 2025-02-04T10:00:18-05:00
gitlab-ci: Don't use .full-ci to run test-primops
test-primops depends upon the existence of validate jobs, yet these do
not exist in the context of nightly jobs, which .full-ci includes.
- - - - -
7cc08550 by Ben Gamari at 2025-02-04T18:34:49-05:00
CorePrep: Name `sat` binders more descriptively
- - - - -
fb40981d by Ben Gamari at 2025-02-04T18:35:26-05:00
ghc-toolchain: Parse i686 triples
This is a moniker used for later 32-bit x86 implementations
(Pentium Pro and later).
Fixes #25691.
- - - - -
02794411 by Cheng Shao at 2025-02-04T18:36:03-05:00
compiler: remove unused assembleOneBCO function
This patch removes the unused assembleOneBCO function from the
bytecode assembler.
- - - - -
db19c8a9 by Matthew Pickering at 2025-02-05T23:16:50-05:00
perf: Replace uses of genericLength with strictGenericLength
genericLength is a recursive function and marked NOINLINE. It is not
going to specialise. In profiles, it can be seen that 3% of total compilation
time when computing bytecode is spend calling this non-specialised
function.
In addition, we can simplify `addListToSS` to avoid traversing the input
list twice and also allocating an intermediate list (after the call to
reverse).
Overall these changes reduce the time spend in 'assembleBCOs' from 5.61s
to 3.88s. Allocations drop from 8GB to 5.3G.
Fixes #25706
- - - - -
5622a14a by Matthew Pickering at 2025-02-05T23:17:27-05:00
perf: nameToCLabel: Directly manipulate ByteString rather than going via strings
`nameToCLabel` is called from `lookupHsSymbol` many times during
bytecode linking. We can save a lot of allocations and time by directly
manipulating the bytestrings rather than going via intermediate lists.
Before: 2GB allocation, 1.11s
After: 260MB allocation, 375ms
Fixes #25719
-------------------------
Metric Decrease:
MultiLayerModulesTH_OneShot
-------------------------
- - - - -
66c7f656 by Matthew Pickering at 2025-02-06T17:15:25-05:00
interpreter: Fix INTERP_STATS profiling code
The profiling code had slightly bitrotted since the last time it was
used. This just fixes things so that if you toggle the INTERP_STATS
macro then it just works and prints out the stats.
Fixes #25695
- - - - -
f71c2835 by Matthew Pickering at 2025-02-06T17:16:02-05:00
perf: Key the interpreter symbol cache by Name rather than FastString
Profiles showed that about 0.2s was being spend constructing the keys
before looking up values in the old symbol cache.
The performance of this codepath is critical as it translates directly
to a delay when a user evaluates a function like `main` in the
interpreter.
Therefore we implement a solution which keys the cache(s) by `Name`
rather than the symbol directly, so the cache can be consulted before
the symbol is constructed.
Fixes #25731
- - - - -
8f8d3a90 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by IO operations
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
28600825 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label threads forked by System.Timeout
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
8a249827 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label signal handling threads
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
26af26f0 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Label Windows console event handling threads
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
bf9c3d4f by Ben Gamari at 2025-02-08T01:17:28-05:00
ghci: Label evaluation sandbox thread
Addresses part of #25452.
Addresses core-libraries-committee#305.
- - - - -
38f78ce5 by Ben Gamari at 2025-02-08T01:17:28-05:00
base: Add changelog entry for addition of thread labels
Addresses #25452.
Addresses core-libraries-committee#305.
- - - - -
c100deb5 by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Clean up style
This cleans up a number of stylistic inconsistencies although it's still
far from perfect.
- - - - -
c4a7680a by Ben Gamari at 2025-02-08T01:18:05-05:00
gen-ci: Properly encapsulate GitLab predicates
- - - - -
52b6539b by M Farkas-Dyck at 2025-02-08T11:34:51-08:00
Avoid partiality in `Language.Haskell.Syntax.Expr`, `GHC.Hs.Expr`, `GHC.Rename.Expr`, etc.
In particular, use `NonEmpty` where appropriate:
- the argument of `FieldLabelString`
- the argument of `HsMultiIf`
- `grhssGRHSs`
Decreases overall compile-time allocation by about 0.1% in the benchmark suite (min -0.8%, max +0.3%).
Metric Decrease:
T3294
- - - - -
a566da92 by Ben Gamari at 2025-02-10T03:21:49-05:00
gitlab-ci: Bump docker images
Closes #25693.
- - - - -
a7e23f01 by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Drop uses of head/tail
To silence warnings with GHC 9.10
- - - - -
12752f0c by Ben Gamari at 2025-02-10T03:21:49-05:00
hadrian: Disable x-data-list-nonempty-unzip warning
- - - - -
e22a14fc by Simon Peyton Jones at 2025-02-11T16:21:10+00:00
Deal correctly with Given CallStack constraints
As #25675 showed, the CallStack solving mechanism was failing
to account for Given CallStack constraints.
This small patch fixes it and improves the Notes.
Small improvement to GHCi debugger output in break011, break024,
which is discussed on the MR !13883
- - - - -
db3e810f by Simon Peyton Jones at 2025-02-12T09:12:30-05:00
Fix inlineBoringOk again
This MR fixes #25713, which turned out to be a consequence of not
completing #17182.
I think I have now gotten it right. See the new
Note [inlineBoringOk]
- - - - -
ef0e6cfc by Ben Gamari at 2025-02-17T19:20:09-05:00
testsuite: Mark T23071 and T2047 as fragile on FreeBSD
These inexplicably fail on FreeBSD on CI. Sadly I am unable to reproduce
this locally but regardless this is holding up Marge so I will mark them
as fragile for now.
Addresses #25751.
- - - - -
7596675e by Jens Petersen at 2025-02-18T08:53:08-05:00
hp2ps Utilities.c: include stdlib.h instead of extern malloc and realloc
- - - - -
975d932c by Rodrigo Mesquita at 2025-02-18T08:53:45-05:00
Inline join points for rhs without free vars
While investigating #25170, we ran into a program (T16473) that allocated 67%
more because of a join point that failed to inline.
Note [Duplicating join points] explains why we want to be conservative
when inlining join points, using as an example a join point that
captures a free variable `f` that becomes available in the continuation
`blah` for further optimisations, as opposed to being lambda-abstracted.
However, when the RHS of the join point has no free variables and is
trivial, the same argument does not apply, and there's nothing to gain
from preserving it.
On the contrary, not inlining these trivial join points such as
$j f x = K f x |> co
can be actively harmful as they prevent useful optimisations from firing
on the known constructor application. #25723 is such an example.
Therefore, we've extended `uncondInlineJoin` to allow duplicating such closed
trivial join points. See the updated Note [Duplicating join points] for
further details.
Additionally, merge the guards in uncondInlineJoin for point DJ3(b) anad DJ3(c) of
Note [Duplicating join points] to avoid an unnecessary traversal in the
call to `collectArgs`; it's also more uniform.
Co-authored-by: Simon Peyton Jones <simon.peytonjones at gmail.com>
Fixes #25723
- - - - -
78de1a55 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Scrub some partiality in `GHC.Tc.Gen.Match`.
In particular, we construct a list of the same length as another list, then loop over both and panic if their lengths are unequal. We can avoid this.
- - - - -
1dfe9325 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
Make list of `ParStmtBlock` in `ParStmt` `NonEmpty`.
In the ParStmt constructor Language.Haskell.Syntax.Expr.StmtLR, the 2nd argument, the list of ParStmtBlocks, must be NonEmpty; make it so.
- - - - -
0e3575b5 by M Farkas-Dyck at 2025-02-18T08:54:31-05:00
GHC.Tc.Gen.Match: Added type signatures for `loop` functions.
- - - - -
c9ffcfee by sternenseemann at 2025-02-18T08:55:14-05:00
GHC: fix reference to function in Note [Target code interpreter]
As far as I could tell, setSessionDynFlags doesn't deal with hsc_interp.
Also added a backreference so this will be updated in the future.
- - - - -
ab77fc8c by sheaf at 2025-02-18T08:55:57-05:00
Account for skolem escape in mightEqualLater
This commit:
1. Refactors checkTyEqRhs to allow it be called in pure contexts,
which means it skips doing any on-the-fly promotion.
2. Calls checkTyEqRhs in mightEqualLater to check whether it a
MetaTv can unify with a RHS or whether that would cause e.g.
skolem escape errors or concreteness errors.
Fixes #25744
- - - - -
cb8a06a4 by Sylvain Henry at 2025-02-18T08:56:52-05:00
Remove a bunch of Makefiles from old build system
- - - - -
e12d6b39 by M Farkas-Dyck at 2025-02-18T08:57:37-05:00
Totalize `GHC.HsToCore.Match.matchWrappers.initNablasGRHSs`.
Converting from `NonEmpty` to `[]` and back is totally needless.
- - - - -
cd2be3be by Matthew Pickering at 2025-02-18T08:58:14-05:00
interpreter: Always print uniques for BCO_NAME labels
In the previous commit I omitted to include the unique, which still
makes it very difficult to trace back where the BCO came from.
- - - - -
c4e112fc by Matthew Pickering at 2025-02-18T08:58:51-05:00
interpreter: Fix overflows and reentrancy in statistics calculation
1. Use unsigned long for counter, as they can easily overflow if you are
running a long benchmark.
2. Make interp_shutdown reentrant by copying the command frequency table
into an array.
Fixes #25756
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70ac6222 by M Farkas-Dyck at 2025-02-18T14:22:06-08:00
Use `Foldable1` where appropriate, avoiding much needless panicking.
In some cases, where not readily feasible to modify code to use `NonEmpty`, merely use `expectNonEmpty` to make explicit we are panicking if we have an empty list.
- - - - -
a3f0a506 by Sylvain Henry at 2025-02-19T05:27:30-05:00
Testsuite: fix deprecation warning
> DeprecationWarning: 'count' is passed as positional argument
- - - - -
ef5470a2 by Ben Gamari at 2025-02-19T16:30:53+00:00
Cmm/Parser: Add surface syntax for Mul2 MachOps
These are otherwise very hard to test in isolation.
- - - - -
59b9307b by Cheng Shao at 2025-02-19T20:24:40-05:00
testsuite: fix InternalCounters test with +debug_ghc
The `InternalCounters` test case fails when ghc is built with
`+debug_ghc`. This patch skips it in that case and allows the
testsuite to pass for the `+debug_ghc` flavour transformer.
- - - - -
aa69187d by M Farkas-Dyck at 2025-02-19T20:25:31-05:00
Scrub a use of `head` in `GHC.Driver.Make.downsweep_imports.checkDuplicates`.
- - - - -
1c8e608a by Cheng Shao at 2025-02-21T20:18:41-05:00
compiler: use fromAscList when applicable
This patch uses fromAscList (with O(n) complexity) instead of fromList
(with O(nlogn) complexity) in certain Binary instances. It's safe to
do so since the corresponding serialization logic is based on toList
(same as toAscList).
- - - - -
549e0aff by Ben Gamari at 2025-02-21T20:19:18-05:00
rts/linker/MachO: Mark internal symbols as static
There is no reason why these should have external linkage.
- - - - -
fbf3d020 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: bump dyld v8 heap size limit
This patch sets `--max-old-space-size=65536` as wasm dyld shebang
arguments to lessen v8 heap pressure in certain workloads that load
the full ghc package. It doesn't really commit 64G memory but it does
help reduce v8 gc overhead.
- - - - -
cb60da24 by Cheng Shao at 2025-02-22T07:41:01-05:00
wasm: fix dyld for shared libraries created by llvm 20.x
This patch fixes wasm dyld script for shared libraries created by llvm
20.x. The __wasm_apply_data_relocs function is now optional and may be
omitted for shared libraries without any runtime relocatable data
segments, so only call __wasm_apply_data_relocs when it's present.
- - - - -
7eea38c8 by Cheng Shao at 2025-02-22T07:41:37-05:00
driver: fix wasm backend sysroot lookup logic when -flto is passed
For the wasm target, the driver calls `wasm32-wasi-clang
--print-search-dirs` and finds the sysroot directory that contains
libc.so etc, then passes the directory path to dyld. However, when GHC
is configured with -flto as a part of C/C++ compiler flags, the clang
driver would insert a llvm-lto specific directory in the
--print-search-dirs output and the driver didn't take that into
account. This patch fixes it and always selects the non-lto sysroot
directory to be passed to dyld. This is one small step towards
supporting building all cbits with lto for wasm.
- - - - -
f3bfe31e by Cheng Shao at 2025-02-23T14:06:25-05:00
wasm: add Note [Variable passing in JSFFI] as !13583 follow up
This patch adds a note to explain how the magic variables like
`__ghc_wasm_jsffi_dyld` are brought into scope of JSFFI code snippets,
as follow up work of !13583.
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c318be56 by Cheng Shao at 2025-02-23T14:07:02-05:00
libffi: update to 3.4.7
Bumps libffi submodule.
- - - - -
33aca30f by sheaf at 2025-02-25T08:58:46-05:00
LLVM: account for register type in funPrologue
We were not properly accounting for the live register type of
global registers in GHC.CmmToLlvm.CodeGen.funPrologue. This meant that
we could allocated a register at type <4 x i32> but try to write to it
at type <8 x i16>, which LLVM doesn't much like.
This patch fixes that by inserting intermerdiate casts when necessary.
Fixes #25730
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0eb58b0e by sheaf at 2025-02-25T08:59:29-05:00
base: make Data.List.NonEmpty.unzip match Data.List
This commit makes Data.List.NonEmpty.unzip match the implementation
of Data.List, as was suggested in approved CLC proposal #107.
- - - - -
f4da90f1 by Matthew Pickering at 2025-02-25T14:11:21-05:00
interpreter: Fix underflow frame lookups
BCOs can be nested, resulting in nested BCO stack frames where the inner most
stack frame can refer to variables stored on earlier stack frames via the
PUSH_L instruction.
|---------|
| BCO_1 | -<-┐
|---------|
......... |
|---------| | PUSH_L <n>
| BCO_N | ->-┘
|---------|
Here BCO_N is syntactically nested within the code for BCO_1 and will result
in code that references the prior stack frame of BCO_1 for some of it's local
variables. If a stack overflow happens between the creation of the stack frame
for BCO_1 and BCO_N the RTS might move BCO_N to a new stack chunk while leaving
BCO_1 in place, invalidating a simple offset based reference to the outer stack
frames.
Therefore `ReadSpW` first performs a bounds check to ensure that accesses onto
the stack will succeed. If the target address would not be a valid location for
the current stack chunk then `slow_spw` function is called, which dereferences
the underflow frame to adjust the offset before performing the lookup.
┌->--x | CHK_1 |
| CHK_2 | | | |---------|
|---------| | └-> | BCO_1 |
| UD_FLOW | -- x |---------|
|---------| |
| ...... | |
|---------| | PUSH_L <n>
| BCO_ N | ->-┘
|---------|
Fixes #25750
- - - - -
c3f2d284 by Vladislav Zavialov at 2025-02-25T14:11:58-05:00
Remove ArgPatBuilder
ArgPatBuilder in Parser/PostProcess.hs became redundant with the
introduction of InvisPat (36a75b80eb).
This small refactoring removes it.
- - - - -
0f2241e9 by sheaf at 2025-02-25T19:23:21-05:00
Propagate long distance info to guarded let binds
This commit ensures that we propagate the enclosing long distance
information to let bindings inside guards, in order to get accurate
pattern-match checking warnings, in particular incomplete record
selector warnings.
Example:
data D = K0 | K1 { fld :: Int }
f :: D -> Int
f d@(K1 {})
| let i = fld d
= i
f _ = 3
We now correctly recognise that the field selector 'fld' cannot fail,
due to the outer pattern match which guarantees that the value 'd' has
the field 'fld'.
Fixes #25749
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64b0d4d0 by Fangyi Zhou at 2025-02-25T19:24:07-05:00
wasm: use primitive opcodes for fabs and sqrt
- Add new `WasmInstr` constructor `WasmSqrt` for sqrt, corresponding to
primitivie operations in wasm.
- When lowering CallishMachOp, use `WasmAbs` and `WasmSqrt` for F32 and
F64 fabs and sqrt.
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272eaef0 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building stage1 haddock for cross ghc
This commit enables building stage1 haddock for cross ghc. Without
this change, hadrian would panic with "Unknown program" error when
building the _build/stage1/bin/cross-prefix-haddock program needed by
the docs-haddock target, even if it only needs to copy from
_build/stage0/bin/cross-prefix-haddock.
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a794e733 by Cheng Shao at 2025-02-25T19:24:43-05:00
hadrian: enable building docs for cross targets
Hadrian used to omit the docs target as a part of binary-dist-dir for
cross targets. This commit enables docs to be built as a part of cross
bindists and it works just fine in CI.
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6dba56e1 by Cheng Shao at 2025-02-25T19:24:43-05:00
ci: build haddock/sphinx-html for wasm jobs
This commit enables building haddock & sphinx-html documentation for
wasm targets. The docs are useful for end users and should be tested
in CI.
I've omitted pdf & manpage generation for the wasm target; I've never
found the pdf version of docs to be useful, and the manpage only
contains `ghc.1` where we really want `wasm32-wasi-ghc.1` but that
should be a separate issue to fix.
- - - - -
2d6a63ab by Cheng Shao at 2025-02-25T19:25:20-05:00
ghci: remove unused showBreakArray function
GHCi.BreakArray.showBreakArray is not used anywhere, hence the
housecleaning.
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b228fcb5 by Cheng Shao at 2025-02-25T19:25:57-05:00
ghc-heap: fix HalfWord incompatible Binary instances for cross GHC
ghc-heap defines HalfWord as Word32/Word16 depending on host word
size. For cross GHC with different host/target word sizes, the Binary
instances are incompatible and breaks iserv serialization of any
message type that involves HalfWord, breaking the ghci debugger. This
patch fixes the issue and has been tested to fix ghci debugger
functionality of the wasm backend. Fixes #25420 #25781.
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ec02f8c2 by Rodrigo Mesquita at 2025-02-26T11:03:38-05:00
ghci-debugger: display thunks provenance if avail
Improves reporting on ghci breakpoints when IPE information is available
by printing, next to the thunk, the source file and src span where the
thunk originated.
Closes #25746
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6acaff2b by Vladislav Zavialov at 2025-02-26T11:04:15-05:00
Tidy up error messages for TypeAbstractions
1. Print the '@' symbol before invisible patterns and improve phrasing:
T24557c.hs:8:4: error: [GHC-11983]
- Invisible type pattern pat is not allowed here
+ Illegal invisible type pattern: @pat
+ An invisible type pattern must occur in an argument position.
2. Use a single error code for all type abstractions deemed illegal
due to the TypeAbstractions extension being disabled.
Before this change:
* [GHC-78249] was used in function equations, lambdas
* [GHC-17916] was used in constructor patterns
After this change:
* [GHC-78249] is used to report all illegal type abstractions
* [GHC-17916] is no longer used
There was no reason for both error codes to exist and this distinction
was a source of complexity in GHC/Tc/Errors/* and GHC/Rename/Pat.hs
3. Group the different "invisible type pattern" error constructors
under a single parent constructor, TcRnIllegalInvisibleTypePattern
containing BadInvisPatReason
- - - - -
1ce9502e by Ben Gamari at 2025-02-27T04:48:29-05:00
haddock/doc: Drop version and release
We currently have no way of keeping this up-to-date with the project version
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7f358f25 by Matthew Pickering at 2025-02-27T04:49:06-05:00
testsuite: Add test for :steplocal performance
This adds a simple test which exercises #25779
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a6a3ffa6 by Sven Tennie at 2025-02-27T23:34:47-05:00
Do not deallocate stack for jump/switch table jumps
Though the name is misleading, we consider them to be branching. For
branch instructions we do not deallocate (parts of) the stack, but keep
the stack pointer (sp) intact.
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39e51ddb by Sven Tennie at 2025-02-27T23:34:47-05:00
Add reproducer for dealloc instructions in switch table jump expressions (#25733)
Measures taken to make the test stable:
- Use 'a' as variable prefix, because X86 32bit stumbled over the
variable name 'i386'
- Flush stdout to make test output deterministic
- Use type annotations to support 32bit archs
- - - - -
d427df93 by Sylvain Henry at 2025-02-27T23:35:30-05:00
Remove redundant location strings in expectJust and friends (#25743)
Now we can use HasDebugCallStack instead to avoid cluttering the code
with strings and to avoid maintaining those strings (e.g. renaming them
when functions are renamed...).
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90f1190e by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Add export list to GHC.SysTools.Tasks
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ec826009 by Ben Gamari at 2025-02-28T20:53:53-05:00
compiler: Pass --target to llvm-as
As noted in #25793, this is necessary due to potential ambiguity on
Apple machines with Rosetta.
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9c1647d1 by Andreas Klebinger at 2025-02-28T20:54:30-05:00
cmmMachOpFoldM: Add missing pattern matches for bitcasts.
Fixes #25771
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3b78e139 by John Ericson at 2025-03-03T15:27:39-05:00
Remove most of `GHC.Internal.Pack`
Since bd82ac9f4716e28b185758ae514691d5a50c003f when `GHC.Pack` was
deleted, it is no longer used except for one function by the RTS.
- - - - -
b4fe0850 by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci: Don't set virtualCWD on every iteration
The calls to withVirtualCWD were introduced to fix #2973, but this bug
is no longer reproducible, even when `withVirtualCWD` is dropped.
This cleanup was originally motivated by the performance of :steplocal,
but the performance problem has now been fixed at its root in the next
commit.
Even then, `withVirtualCWD` seems to now be an unnecessary artifact, and
removing it simplifies the interpreter with no apparent drawbacks (testsuite is
also happy with this change)
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73ba1e6e by Rodrigo Mesquita at 2025-03-03T15:28:16-05:00
ghci debugger: improve break/resume control flow
After interpreting bytecode (`evalStmt`), we may want to hand off
control to "GHCi.UI" in order to display an interactive break prompt:
1. When an /active/ breakpoint (one set with :break ...) is hit
2. At any breakpoint, when using :step from a breakpoint
3. At any breakpoint in the same function f, when :steplocal is called
from a breakpoint in f
4. At any breakpoint in the same module, when :stepmodule is used
Whether to pass control to the UI is now fully determined by
`handleRunStatus` which transforms an `EvalStatus_` into an
`ExecResult`. When `ExecBreak` is returned from `handleRunStatus` to
GHCi, it always means GHCi breaks.
`handleRunStatus` determines whether to loop and resume evaluation right away, or
when to return to GHCi (by returning `ExecBreak` or `ExecComplete`).
- (1) is queried using the `BreakpointStatus` message (the
`breakpointStatus` call)
- (2,3,4) are determined by the predicate `breakHere step span`, which
inspects the improved `SingleStep` type to determine whether we care
about this breakpoint even if it is not active.
This refactor solves two big performance problems with the previous control flow:
- We no longer call `withArgs/withProgram` repeatedly in the
break/resume loop, but rather just once "at the top".
- We now avoid computing the expensive `bindLocalsAtBreakpoint` for
breakpoints we'd never inspect.
In the interpreter_steplocal test added, calling `:steplocal` after breaking on `main = fib 25`
now takes 12 seconds rather than 49 seconds on my machine.
```
interpreter_steplocal(ghci) ghc/alloc 6,124,821,176 540,181,392 -91.2% GOOD
```
Fixes #25779
-------------------------
Metric Decrease:
interpreter_steplocal
-------------------------
- - - - -
c78d8f55 by Cheng Shao at 2025-03-03T20:54:41+00:00
rts: fix top handler closure type signatures
This commit fixes the runIO/runNonIO closure type signatures in the
RTS which should be extern StgClosure. This allows us to remove an
unnecessary type cast in the C foreign desugaring logic, as well as
unneeded complications of JSFFI desugaring logic that also needs to
generate C stubs that may refer to those top handler closures.
Otherwise, we'll have to take special care to avoid generating "extern
StgClosure" declarations for them as we would for other closures, just
to avoid conflicting type signature error at stub compile time.
- - - - -
a204df3a by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: allow arbitrary label string for JSFFI exports
This commit allows arbitrary label string to appear in a foreign
export declaration, as long as the calling convention is javascript.
Well, doesn't make sense to enforce it's a C function symbol for a
JSFFI declaration anyway, and it gets in the way of implementing the
"sync" flavour of exports.
- - - - -
03ebab52 by Cheng Shao at 2025-03-03T20:54:41+00:00
compiler: wasm backend JSFFI sync exports
This commit implements the synchronous flavour of the wasm backend
JSFFI exports:
- `foreign export javascript "foo sync"` exports a top-level Haskell
binding as a synchronous JS function
- `foreign import javascript "wrapper sync"` dynamically exports a
Haskell function closure as a synchronous JS function
- `foreign import javascript unsafe` is now re-entrant by lowering to
a safe ccall
- Also fix the issue that JSFFI dynamic exports didn't really work in
TH & ghci (#25473)
- - - - -
b6ae908b by Cheng Shao at 2025-03-03T20:54:41+00:00
testsuite: test wasm backend JSFFI sync exports
This commit repurposes some existing JSFFI test cases to make them
cover JSFFI sync exports as well.
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edae2874 by Cheng Shao at 2025-03-03T20:54:41+00:00
docs: document wasm backend JSFFI sync exports
This commit updates wasm backend documentation to reflect the new
JSFFI sync exports feature.
- - - - -
9b54eecb by Cheng Shao at 2025-03-03T20:56:21+00:00
wasm: add error message to WouldBlockException
This commit attaches an error message to WouldBlockException, for now
the error message consists of the JS async import code snippet that
thunk is trying to block for. This is useful for debugging synchronous
callbacks that accidentally call an async JS function.
- - - - -
c331eebf by Cheng Shao at 2025-03-04T09:11:45-05:00
compiler: avoid overwriting existing writers in putWithTables
This patch makes `putWithTables` avoid overwriting all existing
UserData writers in the handle. This is crucial for GHC API users that
use putWithUserData/getWithUserData for serialization logic that
involve Names.
- - - - -
e9b7802b by Matthew Pickering at 2025-03-04T09:12:21-05:00
ghci: Serialise mi_top_env
When loading core from interface files (or from a bytecode object in
future) it's important to store what the top-level context of a module
is.
Otherwise, when you load the module into GHCi from the interface files,
only exported identifiers from the top-level module are in scope on the
repl.
See the added test which demonstrates what this enables.
The context at the GHCi prompt is everything that's in-scope in the
TopEnvIface module. Since TopEnvIface imports identifier "a", we can
evaluate "a" in the repl.
In addition to all this, we can use this information in order to
implement reifyModule in a more principled manner.
This becomes even more important when you're debugging and what to set
break-points on functions which are not imported.
- - - - -
73e02068 by Matthew Pickering at 2025-03-04T09:12:21-05:00
Implement reifyModule in terms of mi_top_env
mi_top_env provides precisely the information that reifyModule needs,
the user written imports.
This is important as it unblocks !9604 and #22188
Fixes #8489
- - - - -
0a99825d by Ben Gamari at 2025-03-04T09:12:57-05:00
hadrian: Refactor handling of test suite environment
Previously we would set the environment variables used to run the
testsuite driver using `setEnv` to set them in the Hadrian process.
While looking into failures of a fix to #25752 I noticed this and took
the opportunity to refactor.
- - - - -
7ca72844 by Alan Zimmerman at 2025-03-04T09:13:34-05:00
[EPA] Sync with the ghc-exactprint repo
This brings it into line with the changes in
https://hackage.haskell.org/package/ghc-exactprint-1.12.0.0
But also keeps the latest changes from master.
- - - - -
8f6cc90c by Matthew Pickering at 2025-03-05T04:48:02-05:00
perf: Speed up the bytecode assembler
This commit contains a number of optimisations to the bytecode
assembler. In programs which generate a large amount of bytecode, the
assembler is called a lot of times on many instructions.
1. Specialise the assembleI function for the two intepreters to avoid
having to materialise the intermediate free-monad like structure.
2. Directly compute the UArray and SmallArray needed rather than going
via the intermediate SizedSeq
3. Use optimised monads
4. Define unrolled "any" and "mapM6" functions which can be inlined
and avoid calling recursive functions.
The resulting generated code is much more direct.
Before:
./ByteCodeAsm /home/matt/ghc-profiling-light/_build/stage1/lib/ +RTS -s
48,923,125,664 bytes allocated in the heap
678,221,152 bytes copied during GC
395,648 bytes maximum residency (2 sample(s))
50,040 bytes maximum slop
6 MiB total memory in use (0 MiB lost due to fragmentation)
Tot time (elapsed) Avg pause Max pause
Gen 0 11731 colls, 0 par 0.419s 0.425s 0.0000s 0.0004s
Gen 1 2 colls, 0 par 0.001s 0.001s 0.0007s 0.0012s
INIT time 0.000s ( 0.000s elapsed)
MUT time 6.466s ( 6.484s elapsed)
GC time 0.421s ( 0.426s elapsed)
EXIT time 0.000s ( 0.000s elapsed)
Total time 6.887s ( 6.910s elapsed)
After:
1,518,321,200 bytes allocated in the heap
4,299,552 bytes copied during GC
322,288 bytes maximum residency (2 sample(s))
50,280 bytes maximum slop
6 MiB total memory in use (0 MiB lost due to fragmentation)
Tot time (elapsed) Avg pause Max pause
Gen 0 369 colls, 0 par 0.003s 0.003s 0.0000s 0.0002s
Gen 1 2 colls, 0 par 0.001s 0.001s 0.0007s 0.0012s
INIT time 0.001s ( 0.001s elapsed)
MUT time 0.465s ( 0.466s elapsed)
GC time 0.004s ( 0.004s elapsed)
EXIT time 0.000s ( 0.000s elapsed)
Total time 0.470s ( 0.471s elapsed)
- - - - -
f2d43e11 by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: expose all TH packages from proper GHC.Boot.* modules
Previously we defined some modules here in the GHC.Internal namespace.
Others were merely re-exposed from GHC.Internal.
Re-exposed modules weren't handled correctly by Haddock, so the
Haddocks for the `template-haskell` library couldn't see them.
This change also makes the home package of these modules a bit clearer.
Work towards #25705
- - - - -
91ef82df by Teo Camarasu at 2025-03-05T04:48:40-05:00
ghc-boot-th: fix synopsis formatting
`@...@` syntax doesn't seem to work in synposes and is just kept by
Haddock verbatim.
- - - - -
eb9fe1ec by Brandon Chinn at 2025-03-05T04:49:17-05:00
Collapse string gaps as \& (#25784)
In 9.10, "\65\ \0" would result in "A0", but in 9.12, it results in
"\650", due to the string refactoring I did in !13128. Previously, we
were resolving escape codes and collapsing string gaps as we come across
them, but after the refactor, string processing is broken out into
phases, which is both more readable and useful for multiline strings.
- - - - -
8037f487 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: make JSVal abstract in GHC.Wasm.Prim
This commit makes JSVal an abstract type in the export list of
GHC.Wasm.Prim. JSVal's internal representation is supposed to be a non
user facing implementation detail subject to change at any time. We
should only expose things that are newtypes of JSVal, not JSVal
itself.
- - - - -
4f342431 by Cheng Shao at 2025-03-05T04:49:54-05:00
wasm: make JSVal internal Weak# point to lifted JSVal
JSVal has an internal Weak# with the unlifted JSVal# object as key to
arrange its builtin finalization logic. The Weak# used to designate
Unit_closure as a dummy value; now this commit designates the lifted
JSVal closure as the Weak# value. This allows the implementation of
mkWeakJSVal which can be used to observe the liveliness of a JSVal and
attach a user-specified finalizer.
- - - - -
55af20e6 by Cheng Shao at 2025-03-05T04:49:54-05:00
ghc-experimental: add mkWeakJSVal
This commit adds a mkWeakJSVal function that can be used to set up a
Weak pointer with a JSVal key to observe the key's lifetime and
optionally attach a finalizer.
- - - - -
8273d7d1 by Matthew Pickering at 2025-03-05T04:50:30-05:00
simplifier: Zap Id unfoldings before constructing InScopeSet in simpleOptExpr
Care must be taken to remove unfoldings from `Var`s collected by exprFreeVars
before using them to construct an in-scope set hence `zapIdUnfolding` in `init_subst`.
Consider calling `simpleOptExpr` on an expression like
```
case x of (a,b) -> (x,a)
```
* One of those two occurrences of x has an unfolding (the one in (x,a), with
unfolding x = (a,b)) and the other does not. (Inside a case GHC adds
unfolding-info to the scrutinee's Id.)
* But exprFreeVars just builds a set, so it's a bit random which occurrence is collected.
* Then simpleOptExpr replaces each occurrence of x with the one in the in-scope set.
* Bad bad bad: then the x in case x of ... may be replaced with a version that has an unfolding.
Fixes #25790
- - - - -
07fe6d1d by Rodrigo Mesquita at 2025-03-05T04:51:07-05:00
docs: Fix ghci :doc documentation
Fixes #25799
- - - - -
a510b861 by Matthew Pickering at 2025-03-06T11:43:23+00:00
Add flag to control whether self-recompilation information is written to interface
This patch adds the flag -fwrite-if-self-recomp which controls whether
interface files contain the information necessary to answer the
question:
Do I need to recompile myself or is this current interface file
suitable?
Why? Most packages are only built once either by a distribution or cabal
and then placed into an immutable store, after which we will never ask
this question. Therefore we can derive two benefits from omitting this
information.
* Primary motivation: It vastly reduces the surface area for creating
non-deterministic interface files. See issue #10424 which motivated a
proper fix to that issue. Distributions have long contained versions
of GHC which just have broken self-recompilation checking (in order to
get deterministic interface files).
* Secondary motivation: This reduces the size of interface files
slightly.. the `mi_usages` field can be quite big but probably this
isn't such a great benefit.
* Third motivation: Conceptually clarity about which parts of an
interface file are used in order to **communicate** with subsequent
packages about the **interface** for a module. And which parts are
used to self-communicate during recompilation checking.
The main tracking issue is #22188 but fixes issues such as #10424 in a
proper way.
- - - - -
5b05c27b by Matthew Pickering at 2025-03-06T11:43:23+00:00
Disable self recomp in release flavour
The interface files that we distribute should not contain any
information which is used by the recompilation checking logic since
source file will never be compiled again.
I am not 100% sure this won't cause unexpected issues, there many be
downstream consumers which are incorrectly using the information from
interfaces, but this commit can be reverted if we detect issues.
- - - - -
1d4c9824 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add surface syntax for Word/Float bitcast ops
- - - - -
25c4a2a2 by Matthew Craven at 2025-03-06T18:11:59-05:00
Cmm: Add constant-folding for Word->Float bitcasts
- - - - -
30bdea67 by Matthew Craven at 2025-03-06T18:11:59-05:00
Add tests for #25771
- - - - -
44bf5fa1 by Matthew Pickering at 2025-03-07T13:48:18+00:00
iface: Store flags in interface files
When reporting the reason why a module is recompiled (using
`-dump-hi-diffs`), it is much more informative to inform the user about
which flag exactly has changed, rather than just an opaque reference to
a hash.
Now, when the user enables `-fwrite-if-self-recomp-flags`
there is a difference the precise part of the flags is
reported:
```
codegen flags changed:
before: [Opt_NoTypeableBinds, Opt_OmitYields]
after: [Opt_NoTypeableBinds, Opt_OmitYields, Opt_DictsStrict]
```
Fixes #25571
- - - - -
324222bd by Oleg Grenrus at 2025-03-08T08:50:18-05:00
Run fix-whitespace on compiler/
https://hackage.haskell.org/package/fix-whitespace
IMO this should be included into lint suite
- - - - -
1e53277a by sheaf at 2025-03-08T16:32:25-05:00
Allow defaulting of representational equalities
This commit generalises the defaulting of equality constraints that
was introduced in 663daf8d (with follow-up in 6863503c) to allow
the defaulting of *representational* equality constraints.
Now we default a representational equality
ty1 ~R# ty2
by unifying ty1 ~# ty2.
This allows the following defaulting to take place:
- Coercible alpha[tau] Int ==> alpha := Int
- Coercible (IO beta[tau]) (IO Char) ==> beta := Char
See Note [Defaulting representational equalities] in GHC.Tc.Solver.Default
for more details.
Fixes #21003
- - - - -
d6c40afc by Andreas Klebinger at 2025-03-08T16:33:02-05:00
Revert "Use `Infinite` in unique generation, and clean up some other partial uni patterns as well."
This reverts commit 643dd3d86968c527ba07ece9cc337728dbdfe2a0.
As described in #25817 this commit introduced a subtle bug in AArch64
code generation. So for the time being I will simply revert it
wholesale.
- - - - -
68310e11 by Andreas Klebinger at 2025-03-08T16:33:39-05:00
Properly describe acceptance window for stat tests.
The relative metric is already in %, so no need to multiply by 100.
- - - - -
cca68421 by Cheng Shao at 2025-03-08T22:04:42-05:00
wasm: do not use wasm type reflection in dyld
The wasm dynamic linker used to depend on v8's experimental wasm type
reflection support to generate stub functions when treating GOT.func
items that aren't exported by any loaded library yet. However, as we
work towards wasm ghci browser mode (#25399), we need to ensure the
wasm dyld logic is portable across browsers. So this commit removes
the usage of wasm type reflection in wasm dyld, and it shall only be
added many months later when this feature is widely available in
browsers.
- - - - -
75fcc5c9 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: don't create a wasm global for dyld poison
There's a much more efficient way to convert an unsigned i32 to a
signed one. Thanks, o3-mini-high.
- - - - -
fd40eaa1 by Cheng Shao at 2025-03-08T22:05:19-05:00
wasm: revamp JSFFI internal implementation and documentation
This patch revamps the wasm backend's JSFFI internal implementation
and documentation:
- `JSValManager` logic to allocate a key is simplified to simple
bumping. According to experiments with all major browsers, the
internal `Map` would overflow the heap much earlier before we really
exhaust the 32-bit key space, so there's no point in the extra
complexity.
- `freeJSVal` is now idempotent and safe to call more than once. This
is achieved by attaching the `StablePtr#` to the `JSVal#` closure
and nullifying it when calling `freeJSVal`, so the same stable
pointer cannot be double freed.
- `mkWeakJSVal` no longer exposes the internal `Weak#` pointer and
always creates a new `Weak#` on the fly. Otherwise by finalizing
that `Weak#`, user could accidentally drop the `JSVal`, but
`mkWeakJSVal` is only supposed to create a `Weak` that observes the
`JSVal`'s liveliness without actually interfering it.
- `PromisePendingException` is no longer exported since it's never
meant to be caught by user code; it's a severe bug if it's actually
raised at runtime.
- Everything exported by user-facing `GHC.Wasm.Prim` now has proper
haddock documentation.
- Note [JSVal representation for wasm] has been updated to reflect the
new JSVal# memory layout.
- - - - -
c1ffe19e by Ben Gamari at 2025-03-10T19:35:36-04:00
ghc-internal: Move STM utilities out of GHC.Internal.Conc.Sync
This is necessary to avoid an import cycle on Windows when importing
`GHC.Internal.Exception.Context` in `GHC.Internal.Conc.Sync`.
On the road to address #25365.
- - - - -
51a24b4e by Ben Gamari at 2025-03-10T19:35:40-04:00
base: Capture backtrace from throwSTM
Implements core-libraries-committee#297.
Fixes #25365.
- - - - -
79ebe723 by Ben Gamari at 2025-03-10T19:35:40-04:00
base: Annotate rethrown exceptions in catchSTM with WhileHandling
Implements core-libraries-committee#298
- - - - -
1902 changed files:
- .gitattributes
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/hello.hs
- .gitlab/jobs.yaml
- .gitlab/merge_request_templates/Default.md
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .gitlab/rel_eng/upload.sh
- .gitlab/rel_eng/upload_ghc_libs.py
- .gitmodules
- compile_flags.txt
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Uniques.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CallConv.hs
- compiler/GHC/Cmm/Config.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Liveness.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/ProcPoint.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/Format.hs
- compiler/GHC/CmmToAsm/PPC/Instr.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Base.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Stats.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/Base.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/Wasm/Asm.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToAsm/X86/RegInfo.hs
- compiler/GHC/CmmToLlvm.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/LateCC/TopLevelBinds.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/CallerCC/Types.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/FloatIn.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/StaticArgs.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Subst.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/TyCon/Env.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Unfold.hs
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/UsageEnv.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/BooleanFormula.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/FastString/Env.hs
- compiler/GHC/Data/FlatBag.hs
- compiler/GHC/Data/Graph/Color.hs
- compiler/GHC/Data/Graph/Directed.hs
- + compiler/GHC/Data/Graph/Directed/Internal.hs
- + compiler/GHC/Data/Graph/Directed/Reachability.hs
- compiler/GHC/Data/Graph/Inductive/Graph.hs
- compiler/GHC/Data/IOEnv.hs
- + compiler/GHC/Data/List.hs
- compiler/GHC/Data/List/Infinite.hs
- + compiler/GHC/Data/List/NonEmpty.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/SmallArray.hs
- compiler/GHC/Data/Unboxed.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Config/Cmm.hs
- compiler/GHC/Driver/Config/Core/Rules.hs
- compiler/GHC/Driver/Config/CoreToStg/Prep.hs
- compiler/GHC/Driver/Config/Linker.hs
- compiler/GHC/Driver/Config/Parser.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Hooks.hs
- + compiler/GHC/Driver/IncludeSpecs.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Ppr.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Specificity.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Coverage.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/GuardedRHSs.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match/Constructor.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Errors.hs
- compiler/GHC/Iface/Errors/Ppr.hs
- compiler/GHC/Iface/Ext/Ast.hs
- + compiler/GHC/Iface/Flags.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Flags.hs
- + compiler/GHC/Iface/Recomp/Types.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/JS/Make.hs
- compiler/GHC/JS/Opt/Expr.hs
- compiler/GHC/JS/Opt/Simple.hs
- compiler/GHC/JS/Ppr.hs
- compiler/GHC/Linker/Config.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/ExtraObj.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/Static.hs
- compiler/GHC/Llvm/Ppr.hs
- compiler/GHC/Llvm/Types.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- + compiler/GHC/Parser/Lexer/Interface.hs
- + compiler/GHC/Parser/Lexer/String.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/String.hs
- compiler/GHC/Platform/LoongArch64.hs
- compiler/GHC/Plugins.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Eval/Types.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Interpreter/JS.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- + compiler/GHC/Runtime/Interpreter/Types/SymbolCache.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/EnforceEpt.hs
- compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Stg/Lift/Analysis.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/CgUtils.hs
- compiler/GHC/StgToCmm/Config.hs
- compiler/GHC/StgToCmm/Expr.hs
- compiler/GHC/StgToCmm/Foreign.hs
- compiler/GHC/StgToCmm/Hpc.hs
- compiler/GHC/StgToCmm/Layout.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Monad.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/TagCheck.hs
- compiler/GHC/StgToJS/Apply.hs
- compiler/GHC/StgToJS/Arg.hs
- compiler/GHC/StgToJS/CodeGen.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/StgToJS/Ids.hs
- compiler/GHC/StgToJS/Linker/Linker.hs
- compiler/GHC/StgToJS/Linker/Utils.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/StgToJS/Monad.hs
- compiler/GHC/StgToJS/Object.hs
- compiler/GHC/StgToJS/Symbols.hs
- compiler/GHC/StgToJS/Types.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Functor.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Infer.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Hole.hs-boot
- compiler/GHC/Tc/Errors/Hole/FitTypes.hs
- compiler/GHC/Tc/Errors/Hole/Plugin.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Errors/Types/PromotionErr.hs
- compiler/GHC/Tc/Gen/Annotation.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Do.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Rule.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Class.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/Utils.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Types/TcRef.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Utils/Unify.hs-boot
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Avail.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/Demand.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Literal.hs
- compiler/GHC/Types/Name.hs
- compiler/GHC/Types/Name/Cache.hs
- compiler/GHC/Types/Name/Env.hs
- compiler/GHC/Types/Name/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/PkgQual.hs
- compiler/GHC/Types/ProfAuto.hs
- compiler/GHC/Types/SafeHaskell.hs
- compiler/GHC/Types/SptEntry.hs
- compiler/GHC/Types/Unique/FM.hs
- compiler/GHC/Types/Var.hs
- compiler/GHC/Types/Var/Env.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/External.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Finder/Types.hs
- + compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/ModInfo.hs
- + compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Info.hs
- compiler/GHC/Unit/Module/Env.hs
- + compiler/GHC/Unit/Module/External/Graph.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/Location.hs
- compiler/GHC/Unit/Module/ModGuts.hs
- compiler/GHC/Unit/Module/ModIface.hs
- + compiler/GHC/Unit/Module/ModNodeKey.hs
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- libraries/base/src/Control/Exception.hs
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- libraries/deepseq
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- libraries/file-io
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- + libraries/ghc-boot-th/GHC/Boot/TH/Lift.hs
- libraries/ghc-boot-th/GHC/Internal/TH/Ppr.hs → libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
- libraries/ghc-boot-th/GHC/Internal/TH/PprLib.hs → libraries/ghc-boot-th/GHC/Boot/TH/PprLib.hs
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- libraries/ghc-internal/aclocal.m4
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- libraries/ghc-internal/ghc-internal.buildinfo.in
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- libraries/ghc-bignum/gmp/gmp-tarballs → libraries/ghc-internal/gmp/gmp-tarballs
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- libraries/ghc-internal/src/GHC/Internal/ArrayArray.hs
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- libraries/ghc-internal/src/GHC/Internal/Maybe.hs
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- libraries/ghc-prim/GHC/Prim/PtrEq.hs → libraries/ghc-internal/src/GHC/Internal/Prim/PtrEq.hs
- libraries/ghc-internal/src/GHC/Internal/Read.hs
- libraries/ghc-internal/src/GHC/Internal/Real.hs
- libraries/ghc-internal/src/GHC/Internal/Real.hs-boot
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- libraries/ghc-internal/src/GHC/Internal/Text/ParserCombinators/ReadP.hs
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- libraries/ghc-internal/src/GHC/Internal/TypeLits.hs
- libraries/ghc-internal/src/GHC/Internal/TypeLits/Internal.hs
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- libraries/hpc
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- libraries/parsec
- libraries/process
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- libraries/template-haskell/changelog.md
- libraries/template-haskell/template-haskell.cabal.in
- libraries/template-haskell/tests/all.T
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- libraries/text
- libraries/transformers
- libraries/unix
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- + testsuite/tests/typecheck/should_compile/T16234/ControlMonadClassesEffects.hs
- + testsuite/tests/typecheck/should_compile/T16234/ControlMonadClassesReader.hs
- + testsuite/tests/typecheck/should_compile/T16234/ControlMonadClassesState.hs
- + testsuite/tests/typecheck/should_compile/T16234/ControlMonadPrimitive.hs
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- testsuite/tests/typecheck/should_fail/TyAppPat_PatternBindingExistential.stderr
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- testsuite/tests/typecheck/should_fail/tcfail199.stderr
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- testsuite/tests/unboxedsums/T12711.stdout
- testsuite/tests/unboxedsums/T20858.stdout
- testsuite/tests/unboxedsums/T20858b.stdout
- testsuite/tests/unlifted-datatypes/should_fail/UnlDataInvalidResKind1.stderr
- testsuite/tests/unlifted-datatypes/should_run/UnlGadt1.stderr
- testsuite/tests/unlifted-datatypes/should_run/all.T
- testsuite/tests/unsatisfiable/T14339_Unsat.stderr
- testsuite/tests/unsatisfiable/T23816.stderr
- testsuite/tests/unsatisfiable/UnsatDefer.stderr
- testsuite/tests/vdq-rta/should_compile/T22326_th_pprint1.stderr
- testsuite/tests/vdq-rta/should_compile/T23739_th_pprint1.stderr
- testsuite/tests/warnings/should_compile/DerivingTypeable.stderr
- testsuite/tests/warnings/should_compile/T15460.stderr-ws-32
- testsuite/tests/warnings/should_compile/T15460.stderr-ws-64
- testsuite/tests/warnings/should_compile/T19296.stderr
- testsuite/tests/warnings/should_compile/T24396.stderr
- testsuite/tests/wasm/should_run/control-flow/LoadCmmGroup.hs
- testsuite/tests/wasm/should_run/control-flow/WasmControlFlow.hs
- testsuite/tests/wcompat-warnings/Template.hs
- testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr
- utils/check-exact/ExactPrint.hs
- utils/check-exact/Main.hs
- utils/check-exact/Parsers.hs
- utils/check-exact/Transform.hs
- utils/check-exact/Utils.hs
- − utils/deriveConstants/Makefile
- utils/dump-decls/Main.hs
- utils/genprimopcode/Main.hs
- − utils/genprimopcode/Makefile
- − utils/ghc-pkg/Makefile
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/ParseTriple.hs
- utils/haddock/doc/conf.py
- utils/haddock/haddock-api/haddock-api.cabal
- utils/haddock/haddock-api/src/Haddock.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs
- utils/haddock/haddock-api/src/Haddock/GhcUtils.hs
- utils/haddock/haddock-api/src/Haddock/Interface.hs
- utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
- utils/haddock/haddock-library/haddock-library.cabal
- utils/haddock/haddock-test/haddock-test.cabal
- utils/haddock/haddock.cabal
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/Bug923.html
- utils/haddock/html-test/ref/Instances.html
- utils/haddock/html-test/ref/QuasiExpr.html
- utils/haddock/html-test/ref/TH.html
- utils/haddock/html-test/ref/Threaded_TH.html
- − utils/hp2ps/Makefile
- utils/hp2ps/Utilities.c
- utils/hsc2hs
- − utils/iserv/Makefile
- utils/jsffi/dyld.mjs
- utils/jsffi/post-link.mjs
- utils/jsffi/prelude.mjs
- − utils/remote-iserv/Makefile
- − utils/runghc/Makefile
- − utils/unlit/Makefile
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/297ce2a3e2c7cc726bbb9a0722c05d2ce5a20c00...79ebe7230b38e6478b1d516b54cbd1d104396f40
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/297ce2a3e2c7cc726bbb9a0722c05d2ce5a20c00...79ebe7230b38e6478b1d516b54cbd1d104396f40
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