[Git][ghc/ghc][wip/T23083] 89 commits: Don't suppress *all* Wanteds
Sebastian Graf (@sgraf812)
gitlab at gitlab.haskell.org
Fri Mar 10 17:36:22 UTC 2023
Sebastian Graf pushed to branch wip/T23083 at Glasgow Haskell Compiler / GHC
Commits:
1ed573a5 by Richard Eisenberg at 2023-03-02T22:42:06-05:00
Don't suppress *all* Wanteds
Code in GHC.Tc.Errors.reportWanteds suppresses a Wanted if its
rewriters have unfilled coercion holes; see
Note [Wanteds rewrite Wanteds] in GHC.Tc.Types.Constraint.
But if we thereby suppress *all* errors that's really confusing,
and as #22707 shows, GHC goes on without even realising that the
program is broken. Disaster.
This MR arranges to un-suppress them all if they all get suppressed.
Close #22707
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8919f341 by Luite Stegeman at 2023-03-02T22:42:45-05:00
Check for platform support for JavaScript foreign imports
GHC was accepting `foreign import javascript` declarations
on non-JavaScript platforms. This adds a check so that these
are only supported on an platform that supports the JavaScript
calling convention.
Fixes #22774
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db83f8bb by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Statically assert alignment of Capability
In #22965 we noticed that changes in the size of `Capability` can result
in unsound behavior due to the `align` pragma claiming an alignment
which we don't in practice observe. Avoid this by statically asserting
that the size is a multiple of the alignment.
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5f7a4a6d by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Introduce stgMallocAlignedBytes
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8a6f745d by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Correctly align Capability allocations
Previously we failed to tell the C allocator that `Capability`s needed
to be aligned, resulting in #22965.
Fixes #22965.
Fixes #22975.
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5464c73f by Ben Gamari at 2023-03-02T22:43:22-05:00
rts: Drop no-alignment special case for Windows
For reasons that aren't clear, we were previously not giving Capability
the same favorable alignment on Windows that we provided on other
platforms. Fix this.
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a86aae8b by Matthew Pickering at 2023-03-02T22:43:59-05:00
constant folding: Correct type of decodeDouble_Int64 rule
The first argument is Int64# unconditionally, so we better produce
something of that type. This fixes a core lint error found in the ad
package.
Fixes #23019
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68dd64ff by Zubin Duggal at 2023-03-02T22:44:35-05:00
ncg/aarch64: Handle MULTILINE_COMMENT identically as COMMENTs
Commit 7566fd9de38c67360c090f828923d41587af519c with the fix for #22798 was
incomplete as it failed to handle MULTILINE_COMMENT pseudo-instructions, and
didn't completly fix the compiler panics when compiling with `-fregs-graph`.
Fixes #23002
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2f97c861 by Simon Peyton Jones at 2023-03-02T22:45:11-05:00
Get the right in-scope set in etaBodyForJoinPoint
Fixes #23026
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45af8482 by David Feuer at 2023-03-03T11:40:47-05:00
Export getSolo from Data.Tuple
Proposed in
[CLC proposal #113](https://github.com/haskell/core-libraries-committee/issues/113)
and
[approved by the CLC](https://github.com/haskell/core-libraries-committee/issues/113#issuecomment-1452452191)
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0c694895 by David Feuer at 2023-03-03T11:40:47-05:00
Document getSolo
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bd0536af by Simon Peyton Jones at 2023-03-03T11:41:23-05:00
More fixes for `type data` declarations
This MR fixes #23022 and #23023. Specifically
* Beef up Note [Type data declarations] in GHC.Rename.Module,
to make invariant (I1) explicit, and to name the several
wrinkles.
And add references to these specific wrinkles.
* Add a Lint check for invariant (I1) above.
See GHC.Core.Lint.checkTypeDataConOcc
* Disable the `caseRules` for dataToTag# for `type data` values.
See Wrinkle (W2c) in the Note above. Fixes #23023.
* Refine the assertion in dataConRepArgTys, so that it does not
complain about the absence of a wrapper for a `type data` constructor
Fixes #23022.
Acked-by: Simon Peyton Jones <simon.peytonjones at gmail.com>
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858f34d5 by Oleg Grenrus at 2023-03-04T01:13:55+02:00
Add decideSymbol, decideChar, decideNat, decTypeRep, decT and hdecT
These all type-level equality decision procedures.
Implementes a CLC proposal https://github.com/haskell/core-libraries-committee/issues/98
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bf43ba92 by Simon Peyton Jones at 2023-03-04T01:18:23-05:00
Add test for T22793
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c6e1f3cd by Chris Wendt at 2023-03-04T03:35:18-07:00
Fix typo in docs referring to threadLabel
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232cfc24 by Simon Peyton Jones at 2023-03-05T19:57:30-05:00
Add regression test for #22328
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5ed77deb by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Enable response files for linker if supported
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1e0f6c89 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Synchronize `configure.ac` and `distrib/configure.ac.in`
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70560952 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Fix `hadrian/bindist/config.mk.in`
… as suggested by @bgamari
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b042b125 by sheaf at 2023-03-06T17:06:50-05:00
Apply 1 suggestion(s) to 1 file(s)
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674b6b81 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Try to create somewhat portable `ld` command
I cannot figure out a good way to generate an `ld` command
that works on both Linux and macOS. Normally you'd use something
like `AC_LINK_IFELSE` for this purpose (I think), but that won't
let us test response file support.
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83b0177e by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Quote variables
… as suggested by @bgamari
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845f404d by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Fix configure failure on alpine linux
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c56a3ae6 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00
Small fixes to configure script
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cad5c576 by Andrei Borzenkov at 2023-03-06T17:07:33-05:00
Convert diagnostics in GHC.Rename.Module to proper TcRnMessage (#20115)
I've turned almost all occurrences of TcRnUnknownMessage in GHC.Rename.Module
module into a proper TcRnMessage.
Instead, these TcRnMessage messages were introduced:
TcRnIllegalInstanceHeadDecl
TcRnUnexpectedStandaloneDerivingDecl
TcRnUnusedVariableInRuleDecl
TcRnUnexpectedStandaloneKindSig
TcRnIllegalRuleLhs
TcRnBadAssocRhs
TcRnDuplicateRoleAnnot
TcRnDuplicateKindSig
TcRnIllegalDerivStrategy
TcRnIllegalMultipleDerivClauses
TcRnNoDerivStratSpecified
TcRnStupidThetaInGadt
TcRnBadImplicitSplice
TcRnShadowedTyVarNameInFamResult
TcRnIncorrectTyVarOnLhsOfInjCond
TcRnUnknownTyVarsOnRhsOfInjCond
Was introduced one helper type:
RuleLhsErrReason
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c6432eac by Apoorv Ingle at 2023-03-06T23:26:12+00:00
Constraint simplification loop now depends on `ExpansionFuel`
instead of a boolean flag for `CDictCan.cc_pend_sc`.
Pending givens get a fuel of 3 while Wanted and quantified constraints get a fuel of 1.
This helps pending given constraints to keep up with pending wanted constraints in case of
`UndecidableSuperClasses` and superclass expansions while simplifying the infered type.
Adds 3 dynamic flags for controlling the fuels for each type of constraints
`-fgivens-expansion-fuel` for givens `-fwanteds-expansion-fuel` for wanteds and `-fqcs-expansion-fuel` for quantified constraints
Fixes #21909
Added Tests T21909, T21909b
Added Note [Expanding Recursive Superclasses and ExpansionFuel]
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a5afc8ab by Bodigrim at 2023-03-06T22:51:01-05:00
Documentation: describe laziness of several function from Data.List
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fa559c28 by Ollie Charles at 2023-03-07T20:56:21+00:00
Add `Data.Functor.unzip`
This function is currently present in `Data.List.NonEmpty`, but `Data.Functor`
is a better home for it. This change was discussed and approved by the CLC
at https://github.com/haskell/core-libraries-committee/issues/88.
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2aa07708 by MorrowM at 2023-03-07T21:22:22-05:00
Fix documentation for traceWith and friends
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f3ff7cb1 by David Binder at 2023-03-08T01:24:17-05:00
Remove utils/hpc subdirectory and its contents
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cf98e286 by David Binder at 2023-03-08T01:24:17-05:00
Add git submodule for utils/hpc
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605fbbb2 by David Binder at 2023-03-08T01:24:18-05:00
Update commit for utils/hpc git submodule
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606793d4 by David Binder at 2023-03-08T01:24:18-05:00
Update commit for utils/hpc git submodule
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4158722a by Sylvain Henry at 2023-03-08T01:24:58-05:00
linker: fix linking with aligned sections (#23066)
Take section alignment into account instead of assuming 16 bytes (which
is wrong when the section requires 32 bytes, cf #23066).
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1e0d8fdb by Greg Steuck at 2023-03-08T08:59:05-05:00
Change hostSupportsRPaths to report False on OpenBSD
OpenBSD does support -rpath but ghc build process relies on some
related features that don't work there. See ghc/ghc#23011
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bed3a292 by Alexis King at 2023-03-08T08:59:53-05:00
bytecode: Fix bitmaps for BCOs used to tag tuples and prim call args
fixes #23068
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321d46d9 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Drop redundant prototype
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abb6070f by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix style
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be278901 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Deduplicate assertion
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b9034639 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Fix type issues in Sparks.h
Adds explicit casts to satisfy a C++ compiler.
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da7b2b94 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts: Use release ordering when storing thread labels
Since this makes the ByteArray# visible from other cores.
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5b7f6576 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/BlockAlloc: Allow disabling of internal assertions
These can be quite expensive and it is sometimes useful to compile a
DEBUG RTS without them.
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6283144f by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/Sanity: Mark pinned_object_blocks
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9b528404 by Ben Gamari at 2023-03-08T15:02:30-05:00
rts/Sanity: Look at nonmoving saved_filled lists
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0edc5438 by Ben Gamari at 2023-03-08T15:02:30-05:00
Evac: Squash data race in eval_selector_chain
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7eab831a by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Clarify implementation
This makes the intent of this implementation a bit clearer.
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532262b9 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Clarify comment
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bd9cd84b by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Add missing no-op in busy-wait loop
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c4e6bfc8 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't push empty arrays to update remembered set
Previously the write barrier of resizeSmallArray# incorrectly handled
resizing of zero-sized arrays, pushing an invalid pointer to the update
remembered set.
Fixes #22931.
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92227b60 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix handling of weak pointers
This fixes an interaction between aging and weak pointer handling which
prevented the finalization of some weak pointers. In particular, weak
pointers could have their keys incorrectly marked by the preparatory
collector, preventing their finalization by the subsequent concurrent
collection.
While in the area, we also significantly improve the assertions
regarding weak pointers.
Fixes #22327.
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ba7e7972 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Sanity check nonmoving large objects and compacts
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71b038a1 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Sanity check mutable list
Assert that entries in the nonmoving generation's generational
remembered set (a.k.a. mutable list) live in nonmoving generation.
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99d144d5 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't show occupancy if we didn't collect live words
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81d6cc55 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Fix tracking of FILLED_SWEEPING segments
Previously we only updated the state of the segment at the head of each
allocator's filled list.
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58e53bc4 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Assert state of swept segments
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2db92e01 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Handle new closures in nonmovingIsNowAlive
We must conservatively assume that new closures are reachable since we
are not guaranteed to mark such blocks.
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e4c3249f by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Don't clobber update rem sets of old capabilities
Previously `storageAddCapabilities` (called by `setNumCapabilities`) would
clobber the update remembered sets of existing capabilities when
increasing the capability count. Fix this by only initializing the
update remembered sets of the newly-created capabilities.
Fixes #22927.
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1b069671 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Add missing write barriers in selector optimisation
This fixes the selector optimisation, adding a few write barriers which
are necessary for soundness. See the inline comments for details.
Fixes #22930.
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d4032690 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Post-sweep sanity checking
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0baa8752 by Ben Gamari at 2023-03-08T15:02:30-05:00
nonmoving: Avoid n_caps race
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5d3232ba by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Don't push if nonmoving collector isn't enabled
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0a7eb0aa by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Be more paranoid in segment tracking
Previously we left various segment link pointers dangling. None of this
wrong per se, but it did make it harder than necessary to debug.
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7c817c0a by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Sync-phase mark budgeting
Here we significantly improve the bound on sync phase pause times by
imposing a limit on the amount of work that we can perform during the
sync. If we find that we have exceeded our marking budget then we allow
the mutators to resume, return to concurrent marking, and try
synchronizing again later.
Fixes #22929.
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ce22a3e2 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Allow pinned gen0 objects to be WEAK keys
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78746906 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Reenable assertion
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b500867a by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Move current segment array into Capability
The current segments are conceptually owned by the mutator, not the
collector. Consequently, it was quite tricky to prove that the mutator
would not race with the collect due to this shared state. It turns out
that such races are possible: when resizing the current segment array
we may concurrently try to take a heap census. This will attempt to walk
the current segment array, causing a data race.
Fix this by moving the current segment array into `Capability`, where it
belongs.
Fixes #22926.
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56e669c1 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Fix Note references
Some references to Note [Deadlock detection under the non-moving
collector] were missing an article.
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4a7650d7 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts/Sanity: Fix block count assertion with non-moving collector
The nonmoving collector does not use `oldest_gen->blocks` to track its
block list. However, it nevertheless updates `oldest_gen->n_blocks` to
ensure that its size is accounted for by the storage manager.
Consequently, we must not attempt to assert consistency between the two.
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96a5aaed by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Don't call prepareUnloadCheck
When the nonmoving GC is in use we do not call `checkUnload` (since we
don't unload code) and therefore should not call `prepareUnloadCheck`,
lest we run into assertions.
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6c6674ca by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Encapsulate block allocator spinlock
This makes it a bit easier to add instrumentation on this spinlock
while debugging.
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e84f7167 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Skip some tests when sanity checking is enabled
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3ae0f368 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Fix unregisterised build
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4eb9d06b by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Ensure that sanity checker accounts for saved_filled segments
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f0cf384d by Ben Gamari at 2023-03-08T15:02:31-05:00
hadrian: Add +boot_nonmoving_gc flavour transformer
For using GHC bootstrapping to validate the non-moving GC.
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581e58ac by Ben Gamari at 2023-03-08T15:02:31-05:00
gitlab-ci: Add job bootstrapping with nonmoving GC
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487a8b58 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Move allocator into new source file
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8f374139 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Split out nonmovingAllocateGC
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662b6166 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Only run T22795* in the normal way
It doesn't make sense to run these in multiple ways as they merely test
whether `-threaded`/`-single-threaded` flags.
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0af21dfa by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Rename clear_segment(_free_blocks)?
To reflect the fact that these are to do with the nonmoving collector,
now since they are exposed no longer static.
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7bcb192b by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Fix incorrect STATIC_INLINE
This should be INLINE_HEADER lest we get unused declaration warnings.
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f1fd3ffb by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Mark ffi023 as broken due to #23089
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a57f12b3 by Ben Gamari at 2023-03-08T15:02:31-05:00
testsuite: Skip T7160 in the nonmoving way
Finalization order is different under the nonmoving collector.
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f6f12a36 by Ben Gamari at 2023-03-08T15:02:31-05:00
rts: Capture GC configuration in a struct
The number of distinct arguments passed to GarbageCollect was getting a
bit out of hand.
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ba73a807 by Ben Gamari at 2023-03-08T15:02:31-05:00
nonmoving: Non-concurrent collection
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7c813d06 by Alexis King at 2023-03-08T15:03:10-05:00
hadrian: Fix flavour compiler stage options off-by-one error
!9193 pointed out that ghcDebugAssertions was supposed to be a predicate
on the stage of the built compiler, but in practice it was a predicate
on the stage of the compiler used to build. Unfortunately, while it
fixed that issue for ghcDebugAssertions, it documented every other
similar option as behaving the same way when in fact they all used the
old behavior.
The new behavior of ghcDebugAssertions seems more intuitive, so this
commit changes the interpretation of every other option to match. It
also improves the enableProfiledGhc and debugGhc flavour transformers by
making them more selective about which stages in which they build
additional library/RTS ways.
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f97c7f6d by Luite Stegeman at 2023-03-09T09:52:09-05:00
Delete created temporary subdirectories at end of session.
This patch adds temporary subdirectories to the list of
paths do clean up at the end of the GHC session. This
fixes warnings about non-empty temporary directories.
Fixes #22952
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9ea719f2 by Apoorv Ingle at 2023-03-09T09:52:45-05:00
Fixes #19627.
Previously the solver failed with an unhelpful "solver reached too may iterations" error.
With the fix for #21909 in place we no longer have the possibility of generating such an error if we have `-fconstraint-solver-iteration` > `-fgivens-fuel > `-fwanteds-fuel`. This is true by default, and the said fix also gives programmers a knob to control how hard the solver should try before giving up.
This commit adds:
* Reference to ticket #19627 in the Note [Expanding Recursive Superclasses and ExpansionFuel]
* Test `typecheck/should_fail/T19627.hs` for regression purposes
- - - - -
372ea02e by Sebastian Graf at 2023-03-10T18:26:17+01:00
Simplifier: `countValArgs` should not count Type args (#23102)
I observed miscompilations while working on !10088 caused by this.
Fixes #23102.
- - - - -
8ca0c05b by Sebastian Graf at 2023-03-10T18:26:17+01:00
Simplifier: Eta expand arguments (#23083)
Previously, we'd only eta expand let bindings and lambdas,
now we'll also eta expand arguments such as in T23083:
```hs
g f h = f (h `seq` (h $))
```
Unless `-fpedantic-bottoms` is set, we'll now transform to
```hs
g f h = f (\eta -> h eta)
```
Tweaking the Simplifier to eta-expand in args was a bit more painful than expected:
* `tryEtaExpandRhs` and `findRhsArity` previously only worked on bindings.
But eta expansion of non-recursive bindings is morally the same as eta
expansion of arguments. And in fact the binder was never really looked at in
the non-recursive case.
I was able to make `findRhsArity` cater for both arguments and bindings, as
well as have a new function `tryEtaExpandArg` that shares most of its code
with that of `tryEtaExpandRhs`.
* The Simplifier had a function `simplArg` that wasn't called in `rebuildCall`,
which seems to be the main way to simplify args. Hence I consolidated the
code path to call `simplArg`, too, renaming to `simplLazyArg`.
Fixes #23083.
- - - - -
30 changed files:
- .gitlab/gen_ci.hs
- .gitlab/jobs.yaml
- .gitmodules
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/Core/Class.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/Stats.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/Linker/Static.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/Constants.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Canonical.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d81cad21a5a05b06d3a2413fc7400eba2548cbd6...8ca0c05b598353177cec46d4a508ea725d282f09
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d81cad21a5a05b06d3a2413fc7400eba2548cbd6...8ca0c05b598353177cec46d4a508ea725d282f09
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