Simon Peyton Jones pushed to branch wip/T22439 at Glasgow Haskell Compiler / GHC Commits: 8d6aaa49 by Duncan Coutts at 2022-11-22T02:06:16-05:00 Introduce CapIOManager as the per-cap I/O mangager state Rather than each I/O manager adding things into the Capability structure ad-hoc, we should have a common CapIOManager iomgr member of the Capability structure, with a common interface to initialise etc. The content of the CapIOManager struct will be defined differently for each I/O manager implementation. Eventually we should be able to have the CapIOManager be opaque to the rest of the RTS, and known just to the I/O manager implementation. We plan for that by making the Capability contain a pointer to the CapIOManager rather than containing the structure directly. Initially just move the Unix threaded I/O manager's control FD. - - - - - 8901285e by Duncan Coutts at 2022-11-22T02:06:17-05:00 Add hook markCapabilityIOManager To allow I/O managers to have GC roots in the Capability, within the CapIOManager structure. Not yet used in this patch. - - - - - 5cf709c5 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Move APPEND_TO_BLOCKED_QUEUE from cmm to C The I/O and delay blocking primitives for the non-threaded way currently access the blocked_queue and sleeping_queue directly. We want to move where those queues are to make their ownership clearer: to have them clearly belong to the I/O manager impls rather than to the scheduler. Ultimately we will want to change their representation too. It's inconvenient to do that if these queues are accessed directly from cmm code. So as a first step, replace the APPEND_TO_BLOCKED_QUEUE with a C version appendToIOBlockedQueue(), and replace the open-coded sleeping_queue insertion with insertIntoSleepingQueue(). - - - - - ced9acdb by Duncan Coutts at 2022-11-22T02:06:17-05:00 Move {blocked,sleeping}_queue from scheduler global vars to CapIOManager The blocked_queue_{hd,tl} and the sleeping_queue are currently cooperatively managed between the scheduler and (some but not all of) the non-threaded I/O manager implementations. They lived as global vars with the scheduler, but are poked by I/O primops and the I/O manager backends. This patch is a step on the path towards making the management of I/O or timer blocking belong to the I/O managers and not the scheduler. Specifically, this patch moves the {blocked,sleeping}_queue from being global vars in the scheduler to being members of the CapIOManager struct within each Capability. They are not yet exclusively used by the I/O managers: they are still poked from a couple other places, notably in the scheduler before calling awaitEvent. - - - - - 0f68919e by Duncan Coutts at 2022-11-22T02:06:17-05:00 Remove the now-unused markScheduler The global vars {blocked,sleeping}_queue are now in the Capability and so get marked there via markCapabilityIOManager. - - - - - 39a91f60 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Move macros for checking for pending IO or timers from Schedule.h to Schedule.c and IOManager.h This is just moving, the next step will be to rejig them slightly. For the non-threaded RTS the scheduler needs to be able to test for there being pending I/O operation or pending timers. The implementation of these tests should really be considered to be part of the I/O managers and not part of the scheduler. - - - - - 664b034b by Duncan Coutts at 2022-11-22T02:06:17-05:00 Replace EMPTY_{BLOCKED,SLEEPING}_QUEUE macros by function These are the macros originaly from Scheduler.h, previously moved to IOManager.h, and now replaced with a single inline function anyPendingTimeoutsOrIO(). We can use a single function since the two macros were always checked together. Note that since anyPendingTimeoutsOrIO is defined for all IO manager cases, including threaded, we do not need to guard its use by cpp #if !defined(THREADED_RTS) - - - - - 32946220 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Expand emptyThreadQueues inline for clarity It was not really adding anything. The name no longer meant anything since those I/O and timeout queues do not belong to the scheuler. In one of the two places it was used, the comments already had to explain what it did, whereas now the code matches the comment nicely. - - - - - 9943baf9 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Move the awaitEvent declaration into IOManager.h And add or adjust comments at the use sites of awaitEvent. - - - - - 054dcc9d by Duncan Coutts at 2022-11-22T02:06:17-05:00 Pass the Capability *cap explicitly to awaitEvent It is currently only used in the non-threaded RTS so it works to use MainCapability, but it's a bit nicer to pass the cap anyway. It's certainly shorter. - - - - - 667fe5a4 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Pass the Capability *cap explicitly to appendToIOBlockedQueue And to insertIntoSleepingQueue. Again, it's a bit cleaner and simpler though not strictly necessary given that these primops are currently only used in the non-threaded RTS. - - - - - 7181b074 by Duncan Coutts at 2022-11-22T02:06:17-05:00 Reveiew feedback: improve one of the TODO comments The one about the nonsense (const False) test on WinIO for there being any IO or timers pending, leading to unnecessary complication later in the scheduler. - - - - - e5b68183 by Andreas Klebinger at 2022-11-22T02:06:52-05:00 Optimize getLevity. Avoid the intermediate data structures allocated by splitTyConApp. This avoids ~0.5% of allocations for a build using -O2. Fixes #22254 - - - - - de5fb348 by Andreas Klebinger at 2022-11-22T02:07:28-05:00 hadrian:Set TNTC when running testsuite. - - - - - 9d61c182 by Oleg Grenrus at 2022-11-22T15:59:34-05:00 Add unsafePtrEquality# restricted to UnliftedTypes - - - - - e817c871 by Jonathan Dowland at 2022-11-22T16:00:14-05:00 utils/unlit: adjust parser to match Report spec The Haskell 2010 Report says that, for Latex-style Literate format, "Program code begins on the first line following a line that begins \begin{code}". (This is unchanged from the 98 Report) However the unlit.c implementation only matches a line that contains "\begin{code}" and nothing else. One consequence of this is that one cannot suffix Latex options to the code environment. I.e., this does not work: \begin{code}[label=foo,caption=Foo Code] Adjust the matcher to conform to the specification from the Report. The Haskell Wiki currently recommends suffixing a '%' to \begin{code} in order to deliberately hide a code block from Haskell. This is bad advice, as it's relying on an implementation quirk rather than specified behaviour. None-the-less, some people have tried to use it, c.f. <https://mail.haskell.org/pipermail/haskell-cafe/2009-September/066780.html> An alternative solution is to define a separate, equivalent Latex environment to "code", that is functionally identical in Latex but ignored by unlit. This should not be a burden: users are required to manually define the code environment anyway, as it is not provided by the Latex verbatim or lstlistings packages usually used for presenting code in documents. Fixes #3549. - - - - - 0b7fef11 by Teo Camarasu at 2022-11-23T12:44:33-05:00 Fix eventlog all option Previously it didn't enable/disable nonmoving_gc and ticky event types Fixes #21813 - - - - - 04d0618c by Arnaud Spiwack at 2022-11-23T12:45:14-05:00 Expand Note [Linear types] with the stance on linting linearity Per the discussion on #22123 - - - - - e1538516 by Lawton Nichols at 2022-11-23T12:45:55-05:00 Add documentation on custom Prelude modules (#22228) Specifically, custom Prelude modules that are named `Prelude`. - - - - - b5c71454 by Sylvain Henry at 2022-11-23T12:46:35-05:00 Don't let configure perform trivial substitutions (#21846) Hadrian now performs substitutions, especially to generate .cabal files from .cabal.in files. Two benefits: 1. We won't have to re-configure when we modify thing.cabal.in. Hadrian will take care of this for us. 2. It paves the way to allow the same package to be configured differently by Hadrian in the same session. This will be useful to fix #19174: we want to build a stage2 cross-compiler for the host platform and a stage1 compiler for the cross target platform in the same Hadrian session. - - - - - 99aca26b by nineonine at 2022-11-23T12:47:11-05:00 CApiFFI: add ConstPtr for encoding const-qualified pointer return types (#22043) Previously, when using `capi` calling convention in foreign declarations, code generator failed to handle const-cualified pointer return types. This resulted in CC toolchain throwing `-Wincompatible-pointer-types-discards-qualifiers` warning. `Foreign.C.Types.ConstPtr` newtype was introduced to handle these cases - special treatment was put in place to generate appropritetly qualified C wrapper that no longer triggers the above mentioned warning. Fixes #22043 - - - - - 040bfdc3 by M Farkas-Dyck at 2022-11-23T21:59:03-05:00 Scrub some no-warning pragmas. - - - - - 178c1fd8 by Vladislav Zavialov at 2022-11-23T21:59:39-05:00 Check if the SDoc starts with a single quote (#22488) This patch fixes pretty-printing of character literals inside promoted lists and tuples. When we pretty-print a promoted list or tuple whose first element starts with a single quote, we want to add a space between the opening bracket and the element: '[True] -- ok '[ 'True] -- ok '['True] -- not ok If we don't add the space, we accidentally produce a character literal '['. Before this patch, pprSpaceIfPromotedTyCon inspected the type as an AST and tried to guess if it would be rendered with a single quote. However, it missed the case when the inner type was itself a character literal: '[ 'x'] -- ok '['x'] -- not ok Instead of adding this particular case, I opted for a more future-proof solution: check the SDoc directly. This way we can detect if the single quote is actually there instead of trying to predict it from the AST. The new function is called spaceIfSingleQuote. - - - - - 11627c42 by Matthew Pickering at 2022-11-23T22:00:15-05:00 notes: Fix references to HPT space leak note Updating this note was missed when updating the HPT to the HUG. Fixes #22477 - - - - - 86ff1523 by Andrei Borzenkov at 2022-11-24T17:24:51-05:00 Convert diagnostics in GHC.Rename.Expr to proper TcRnMessage (#20115) Problem: avoid usage of TcRnMessageUnknown Solution: The following `TcRnMessage` messages has been introduced: TcRnNoRebindableSyntaxRecordDot TcRnNoFieldPunsRecordDot TcRnIllegalStaticExpression TcRnIllegalStaticFormInSplice TcRnListComprehensionDuplicateBinding TcRnEmptyStmtsGroup TcRnLastStmtNotExpr TcRnUnexpectedStatementInContext TcRnIllegalTupleSection TcRnIllegalImplicitParameterBindings TcRnSectionWithoutParentheses Co-authored-by: sheaf <sam.derbyshire@gmail.com> - - - - - d198a19a by Cheng Shao at 2022-11-24T17:25:29-05:00 rts: fix missing Arena.h symbols in RtsSymbols.c It was an unfortunate oversight in !8961 and broke devel2 builds. - - - - - 5943e739 by Andrew Lelechenko at 2022-11-25T04:38:28-05:00 Assorted fixes to avoid Data.List.{head,tail} - - - - - 1f1b99b8 by sheaf at 2022-11-25T04:38:28-05:00 Review suggestions for assorted fixes to avoid Data.List.{head,tail} - - - - - 13d627bb by Vladislav Zavialov at 2022-11-25T04:39:04-05:00 Print unticked promoted data constructors (#20531) Before this patch, GHC unconditionally printed ticks before promoted data constructors: ghci> type T = True -- unticked (user-written) ghci> :kind! T T :: Bool = 'True -- ticked (compiler output) After this patch, GHC prints ticks only when necessary: ghci> type F = False -- unticked (user-written) ghci> :kind! F F :: Bool = False -- unticked (compiler output) ghci> data False -- introduce ambiguity ghci> :kind! F F :: Bool = 'False -- ticked by necessity (compiler output) The old behavior can be enabled by -fprint-redundant-promotion-ticks. Summary of changes: * Rename PrintUnqualified to NamePprCtx * Add QueryPromotionTick to it * Consult the GlobalRdrEnv to decide whether to print a tick (see mkPromTick) * Introduce -fprint-redundant-promotion-ticks Co-authored-by: Artyom Kuznetsov <hi@wzrd.ht> - - - - - d10dc6bd by Simon Peyton Jones at 2022-11-25T22:31:27+00:00 Fix decomposition of TyConApps Ticket #22331 showed that we were being too eager to decompose a Wanted TyConApp, leading to incompleteness in the solver. To understand all this I ended up doing a substantial rewrite of the old Note [Decomposing equalities], now reborn as Note [Decomposing TyConApp equalities]. Plus rewrites of other related Notes. The actual fix is very minor and actually simplifies the code: in `can_decompose` in `GHC.Tc.Solver.Canonical.canTyConApp`, we now call `noMatchableIrreds`. A closely related refactor: we stop trying to use the same "no matchable givens" function here as in `matchClassInst`. Instead split into two much simpler functions. - - - - - 2da5c38a by Will Hawkins at 2022-11-26T04:05:04-05:00 Redirect output of musttail attribute test Compilation output from test for support of musttail attribute leaked to the console. - - - - - 0eb1c331 by Cheng Shao at 2022-11-28T08:55:53+00:00 Move hs_mulIntMayOflo cbits to ghc-prim It's only used by wasm NCG at the moment, but ghc-prim is a more reasonable place for hosting out-of-line primops. Also, we only need a single version of hs_mulIntMayOflo. - - - - - 36b53a9d by Cheng Shao at 2022-11-28T09:05:57+00:00 compiler: generate ccalls for clz/ctz/popcnt in wasm NCG We used to generate a single wasm clz/ctz/popcnt opcode, but it's wrong when it comes to subwords, so might as well generate ccalls for them. See #22470 for details. - - - - - d4134e92 by Cheng Shao at 2022-11-28T23:48:14-05:00 compiler: remove unused MO_U_MulMayOflo We actually only emit MO_S_MulMayOflo and never emit MO_U_MulMayOflo anywhere. - - - - - 8d15eadc by Apoorv Ingle at 2022-11-29T03:09:31-05:00 Killing cc_fundeps, streamlining kind equality orientation, and type equality processing order Fixes: #217093 Associated to #19415 This change * Flips the orientation of the the generated kind equality coercion in canEqLHSHetero; * Removes `cc_fundeps` in CDictCan as the check was incomplete; * Changes `canDecomposableTyConAppOk` to ensure we process kind equalities before type equalities and avoiding a call to `canEqLHSHetero` while processing wanted TyConApp equalities * Adds 2 new tests for validating the change - testsuites/typecheck/should_compile/T21703.hs and - testsuites/typecheck/should_fail/T19415b.hs (a simpler version of T19415.hs) * Misc: Due to the change in the equality direction some error messages now have flipped type mismatch errors * Changes in Notes: - Note [Fundeps with instances, and equality orientation] supercedes Note [Fundeps with instances] - Added Note [Kind Equality Orientation] to visualize the kind flipping - Added Note [Decomposing Dependent TyCons and Processing Wanted Equalties] - - - - - 646969d4 by Krzysztof Gogolewski at 2022-11-29T03:10:13-05:00 Change printing of sized literals to match the proposal Literals in Core were printed as e.g. 0xFF#16 :: Int16#. The proposal 451 now specifies syntax 0xFF#Int16. This change affects the Core printer only - more to be done later. Part of #21422. - - - - - 02e282ec by Simon Peyton Jones at 2022-11-29T03:10:48-05:00 Be a bit more selective about floating bottoming expressions This MR arranges to float a bottoming expression to the top only if it escapes a value lambda. See #22494 and Note [Floating to the top] in SetLevels. This has a generally beneficial effect in nofib +-------------------------------++----------+ | ||tsv (rel) | +===============================++==========+ | imaginary/paraffins || -0.93% | | imaginary/rfib || -0.05% | | real/fem || -0.03% | | real/fluid || -0.01% | | real/fulsom || +0.05% | | real/gamteb || -0.27% | | real/gg || -0.10% | | real/hidden || -0.01% | | real/hpg || -0.03% | | real/scs || -11.13% | | shootout/k-nucleotide || -0.01% | | shootout/n-body || -0.08% | | shootout/reverse-complement || -0.00% | | shootout/spectral-norm || -0.02% | | spectral/fibheaps || -0.20% | | spectral/hartel/fft || -1.04% | | spectral/hartel/solid || +0.33% | | spectral/hartel/wave4main || -0.35% | | spectral/mate || +0.76% | +===============================++==========+ | geom mean || -0.12% | The effect on compile time is generally slightly beneficial Metrics: compile_time/bytes allocated ---------------------------------------------- MultiLayerModulesTH_OneShot(normal) +0.3% PmSeriesG(normal) -0.2% PmSeriesT(normal) -0.1% T10421(normal) -0.1% T10421a(normal) -0.1% T10858(normal) -0.1% T11276(normal) -0.1% T11303b(normal) -0.2% T11545(normal) -0.1% T11822(normal) -0.1% T12150(optasm) -0.1% T12234(optasm) -0.3% T13035(normal) -0.2% T16190(normal) -0.1% T16875(normal) -0.4% T17836b(normal) -0.2% T17977(normal) -0.2% T17977b(normal) -0.2% T18140(normal) -0.1% T18282(normal) -0.1% T18304(normal) -0.2% T18698a(normal) -0.1% T18923(normal) -0.1% T20049(normal) -0.1% T21839r(normal) -0.1% T5837(normal) -0.4% T6048(optasm) +3.2% BAD T9198(normal) -0.2% T9630(normal) -0.1% TcPlugin_RewritePerf(normal) -0.4% hard_hole_fits(normal) -0.1% geo. mean -0.0% minimum -0.4% maximum +3.2% The T6048 outlier is hard to pin down, but it may be the effect of reading in more interface files definitions. It's a small program for which compile time is very short, so I'm not bothered about it. Metric Increase: T6048 - - - - - ab23dc5e by Ben Gamari at 2022-11-29T03:11:25-05:00 testsuite: Mark unpack_sums_6 as fragile due to #22504 This test is explicitly dependent upon runtime, which is generally not appropriate given that the testsuite is run in parallel and generally saturates the CPU. - - - - - def47dd3 by Ben Gamari at 2022-11-29T03:11:25-05:00 testsuite: Don't use grep -q in unpack_sums_7 `grep -q` closes stdin as soon as it finds the pattern it is looking for, resulting in #22484. - - - - - cc25d52e by Sylvain Henry at 2022-11-29T09:44:31+01:00 Add Javascript backend Add JS backend adapted from the GHCJS project by Luite Stegeman. Some features haven't been ported or implemented yet. Tests for these features have been disabled with an associated gitlab ticket. Bump array submodule Work funded by IOG. Co-authored-by: Jeffrey Young <jeffrey.young@iohk.io> Co-authored-by: Luite Stegeman <stegeman@gmail.com> Co-authored-by: Josh Meredith <joshmeredith2008@gmail.com> - - - - - 68c966cd by sheaf at 2022-11-30T09:31:25-05:00 Fix @since annotations on WithDict and Coercible Fixes #22453 - - - - - a3a8e9e9 by Simon Peyton Jones at 2022-11-30T09:32:03-05:00 Be more careful in GHC.Tc.Solver.Interact.solveOneFromTheOther We were failing to account for the cc_pend_sc flag in this important function, with the result that we expanded superclasses forever. Fixes #22516. - - - - - a9d9b8c0 by Simon Peyton Jones at 2022-11-30T09:32:03-05:00 Use mkNakedFunTy in tcPatSynSig As #22521 showed, in tcPatSynSig we make a "fake type" to kind-generalise; and that type has unzonked type variables in it. So we must not use `mkFunTy` (which checks FunTy's invariants) via `mkPhiTy` when building this type. Instead we need to use `mkNakedFunTy`. Easy fix. - - - - - 31462d98 by Andreas Klebinger at 2022-11-30T14:50:58-05:00 Properly cast values when writing/reading unboxed sums. Unboxed sums might store a Int8# value as Int64#. This patch makes sure we keep track of the actual value type. See Note [Casting slot arguments] for the details. - - - - - 10a2a7de by Oleg Grenrus at 2022-11-30T14:51:39-05:00 Move Void to GHC.Base... This change would allow `Void` to be used deeper in module graph. For example exported from `Prelude` (though that might be already possible). Also this change includes a change `stimes @Void _ x = x`, https://github.com/haskell/core-libraries-committee/issues/95 While the above is not required, maintaining old stimes behavior would be tricky as `GHC.Base` doesn't know about `Num` or `Integral`, which would require more hs-boot files. - - - - - b4cfa8e2 by Sebastian Graf at 2022-11-30T14:52:24-05:00 DmdAnal: Reflect the `seq` of strict fields of a DataCon worker (#22475) See the updated `Note [Data-con worker strictness]` and the new `Note [Demand transformer for data constructors]`. Fixes #22475. - - - - - d87f28d8 by Baldur Blöndal at 2022-11-30T21:16:36+01:00 Make Functor a quantified superclass of Bifunctor. See https://github.com/haskell/core-libraries-committee/issues/91 for discussion. This change relates Bifunctor with Functor by requiring second = fmap. Moreover this change is a step towards unblocking the major version bump of bifunctors and profunctors to major version 6. This paves the way to move the Profunctor class into base. For that Functor first similarly becomes a superclass of Profunctor in the new major version 6. - - - - - 72cf4c5d by doyougnu at 2022-12-01T12:36:44-05:00 FastString: SAT bucket_match Metric Decrease: MultiLayerModulesTH_OneShot - - - - - afc2540d by Simon Peyton Jones at 2022-12-01T12:37:20-05:00 Add a missing varToCoreExpr in etaBodyForJoinPoint This subtle bug showed up when compiling a library with 9.4. See #22491. The bug is present in master, but it is hard to trigger; the new regression test T22491 fails in 9.4. The fix was easy: just add a missing varToCoreExpr in etaBodyForJoinPoint. The fix is definitely right though! I also did some other minor refatoring: * Moved the preInlineUnconditionally test in simplExprF1 to before the call to joinPointBinding_maybe, to avoid fruitless eta-expansion. * Added a boolean from_lam flag to simplNonRecE, to avoid two fruitless tests, and commented it a bit better. These refactorings seem to save 0.1% on compile-time allocation in perf/compiler; with a max saving of 1.4% in T9961 Metric Decrease: T9961 - - - - - 81eeec7f by M Farkas-Dyck at 2022-12-01T12:37:56-05:00 CI: Forbid the fully static build on Alpine to fail. To do so, we mark some tests broken in this configuration. - - - - - c5d1bf29 by Bryan Richter at 2022-12-01T12:37:56-05:00 CI: Remove ARMv7 jobs These jobs fail (and are allowed to fail) nearly every time. Soon they won't even be able to run at all, as we won't currently have runners that can run them. Fixing the latter problem is tracked in #22409. I went ahead and removed all settings and configurations. - - - - - d82992fd by Bryan Richter at 2022-12-01T12:37:56-05:00 CI: Fix CI lint Failure was introduced by conflicting changes to gen_ci.hs that did *not* trigger git conflicts. - - - - - ce126993 by Simon Peyton Jones at 2022-12-02T01:22:12-05:00 Refactor TyCon to have a top-level product This patch changes the representation of TyCon so that it has a top-level product type, with a field that gives the details (newtype, type family etc), #22458. Not much change in allocation, but execution seems to be a bit faster. Includes a change to the haddock submodule to adjust for API changes. - - - - - 74c767df by Matthew Pickering at 2022-12-02T01:22:48-05:00 ApplicativeDo: Set pattern location before running exhaustiveness checker This improves the error messages of the exhaustiveness checker when checking statements which have been moved around with ApplicativeDo. Before: Test.hs:2:3: warning: [GHC-62161] [-Wincomplete-uni-patterns] Pattern match(es) are non-exhaustive In a pattern binding: Patterns of type ‘Maybe ()’ not matched: Nothing | 2 | let x = () | ^^^^^^^^^^ After: Test.hs:4:3: warning: [GHC-62161] [-Wincomplete-uni-patterns] Pattern match(es) are non-exhaustive In a pattern binding: Patterns of type ‘Maybe ()’ not matched: Nothing | 4 | ~(Just res1) <- seq x (pure $ Nothing @()) | Fixes #22483 - - - - - 85ecc1a0 by Matthew Pickering at 2022-12-02T19:46:43-05:00 Add special case for :Main module in `GHC.IfaceToCore.mk_top_id` See Note [Root-main Id] The `:Main` special binding is actually defined in the current module (hence don't go looking for it externally) but the module name is rOOT_MAIN rather than the current module so we need this special case. There was already some similar logic in `GHC.Rename.Env` for External Core, but now the "External Core" is in interface files it needs to be moved here instead. Fixes #22405 - - - - - 108c319f by Krzysztof Gogolewski at 2022-12-02T19:47:18-05:00 Fix linearity checking in Lint Lint was not able to see that x*y <= x*y, because this inequality was decomposed to x <= x*y && y <= x*y, but there was no rule to see that x <= x*y. Fixes #22546. - - - - - bb674262 by Bryan Richter at 2022-12-03T04:38:46-05:00 Mark T16916 fragile See https://gitlab.haskell.org/ghc/ghc/-/issues/16966 - - - - - 5d267d46 by Vladislav Zavialov at 2022-12-03T04:39:22-05:00 Refactor: FreshOrReuse instead of addTyClTyVarBinds This is a refactoring that should have no effect on observable behavior. Prior to this change, GHC.HsToCore.Quote contained a few closely related functions to process type variable bindings: addSimpleTyVarBinds, addHsTyVarBinds, addQTyVarBinds, and addTyClTyVarBinds. We can classify them by their input type and name generation strategy: Fresh names only Reuse bound names +---------------------+-------------------+ [Name] | addSimpleTyVarBinds | | [LHsTyVarBndr flag GhcRn] | addHsTyVarBinds | | LHsQTyVars GhcRn | addQTyVarBinds | addTyClTyVarBinds | +---------------------+-------------------+ Note how two functions are missing. Because of this omission, there were two places where a LHsQTyVars value was constructed just to be able to pass it to addTyClTyVarBinds: 1. mk_qtvs in addHsOuterFamEqnTyVarBinds -- bad 2. mkHsQTvs in repFamilyDecl -- bad This prevented me from making other changes to LHsQTyVars, so the main goal of this refactoring is to get rid of those workarounds. The most direct solution would be to define the missing functions. But that would lead to a certain amount of code duplication. To avoid code duplication, I factored out the name generation strategy into a function parameter: data FreshOrReuse = FreshNamesOnly | ReuseBoundNames addSimpleTyVarBinds :: FreshOrReuse -> ... addHsTyVarBinds :: FreshOrReuse -> ... addQTyVarBinds :: FreshOrReuse -> ... - - - - - c189b831 by Vladislav Zavialov at 2022-12-03T04:39:22-05:00 addHsOuterFamEqnTyVarBinds: use FreshNamesOnly for explicit binders Consider this example: [d| instance forall a. C [a] where type forall b. G [a] b = Proxy b |] When we process "forall b." in the associated type instance, it is unambiguously the binding site for "b" and we want a fresh name for it. Therefore, FreshNamesOnly is more fitting than ReuseBoundNames. This should not have any observable effect but it avoids pointless lookups in the MetaEnv. - - - - - 42512264 by Ross Paterson at 2022-12-03T10:32:45+00:00 Handle type data declarations in Template Haskell quotations and splices (fixes #22500) This adds a TypeDataD constructor to the Template Haskell Dec type, and ensures that the constructors it contains go in the TyCls namespace. - - - - - 1a767fa3 by Vladislav Zavialov at 2022-12-05T05:18:50-05:00 Add BufSpan to EpaLocation (#22319, #22558) The key part of this patch is the change to mkTokenLocation: - mkTokenLocation (RealSrcSpan r _) = TokenLoc (EpaSpan r) + mkTokenLocation (RealSrcSpan r mb) = TokenLoc (EpaSpan r mb) mkTokenLocation used to discard the BufSpan, but now it is saved and can be retrieved from LHsToken or LHsUniToken. This is made possible by the following change to EpaLocation: - data EpaLocation = EpaSpan !RealSrcSpan + data EpaLocation = EpaSpan !RealSrcSpan !(Strict.Maybe BufSpan) | ... The end goal is to make use of the BufSpan in Parser/PostProcess/Haddock. - - - - - cd31acad by sheaf at 2022-12-06T15:45:58-05:00 Hadrian: fix ghcDebugAssertions off-by-one error Commit 6b2f7ffe changed the logic that decided whether to enable debug assertions. However, it had an off-by-one error, as the stage parameter to the function inconsistently referred to the stage of the compiler being used to build or the stage of the compiler we are building. This patch makes it consistent. Now the parameter always refers to the the compiler which is being built. In particular, this patch re-enables assertions in the stage 2 compiler when building with devel2 flavour, and disables assertions in the stage 2 compiler when building with validate flavour. Some extra performance tests are now run in the "validate" jobs because the stage2 compiler no longer contains assertions. ------------------------- Metric Decrease: CoOpt_Singletons MultiComponentModules MultiComponentModulesRecomp MultiLayerModulesTH_OneShot T11374 T12227 T12234 T13253-spj T13701 T14683 T14697 T15703 T17096 T17516 T18304 T18478 T18923 T5030 T9872b TcPlugin_RewritePerf Metric Increase: MultiComponentModules MultiComponentModulesRecomp MultiLayerModules MultiLayerModulesRecomp MultiLayerModulesTH_Make T13386 T13719 T3294 T9233 T9675 parsing001 ------------------------- - - - - - 21d66db1 by mrkun at 2022-12-06T15:46:38-05:00 Push DynFlags out of runInstallNameTool - - - - - aaaaa79b by mrkun at 2022-12-06T15:46:38-05:00 Push DynFlags out of askOtool - - - - - 4e28f49e by mrkun at 2022-12-06T15:46:38-05:00 Push DynFlags out of runInjectRPaths - - - - - a7422580 by mrkun at 2022-12-06T15:46:38-05:00 Push DynFlags out of Linker.MacOS - - - - - e902d771 by Matthew Craven at 2022-12-08T08:30:23-05:00 Fix bounds-checking buglet in Data.Array.Byte ...another manifestation of #20851 which I unfortunately missed in my first pass. - - - - - 8d36c0c6 by Gergő Érdi at 2022-12-08T08:31:03-05:00 Remove copy-pasted definitions of `graphFromEdgedVertices*` - - - - - c5d8ed3a by Gergő Érdi at 2022-12-08T08:31:03-05:00 Add version of `reachableGraph` that avoids loop for cyclic inputs by building its result connected component by component Fixes #22512 - - - - - 90cd5396 by Krzysztof Gogolewski at 2022-12-08T08:31:39-05:00 Mark Type.Reflection.Unsafe as Unsafe This module can be used to construct ill-formed TypeReps, so it should be Unsafe. - - - - - 2057c77d by Ian-Woo Kim at 2022-12-08T08:32:19-05:00 Truncate eventlog event for large payload (#20221) RTS eventlog events for postCapsetVecEvent are truncated if payload is larger than EVENT_PAYLOAD_SIZE_MAX Previously, postCapsetVecEvent records eventlog event with payload of variable size larger than EVENT_PAYLOAD_SIZE_MAX (2^16) without any validation, resulting in corrupted data. For example, this happens when a Haskell binary is invoked with very long command line arguments exceeding 2^16 bytes (see #20221). Now we check the size of accumulated payload messages incrementally, and truncate the message just before the payload size exceeds EVENT_PAYLOAD_SIZE_MAX. RTS will warn the user with a message showing how many arguments are truncated. - - - - - 9ec76f61 by Cheng Shao at 2022-12-08T08:32:59-05:00 hadrian: don't add debug info to non-debug ways of rts Hadrian used to pass -g when building all ways of rts. It makes output binaries larger (especially so for wasm backend), and isn't needed by most users out there, so this patch removes that flag. In case the debug info is desired, we still pass -g3 when building the debug way, and there's also the debug_info flavour transformer which ensures -g3 is passed for all rts ways. - - - - - 7658cdd4 by Krzysztof Gogolewski at 2022-12-08T08:33:36-05:00 Restore show (typeRep @[]) == "[]" The Show instance for TypeRep [] has changed in 9.5 to output "List" because the name of the type constructor changed. This seems to be accidental and is inconsistent with TypeReps of saturated lists, which are printed as e.g. "[Int]". For now, I'm restoring the old behavior; in the future, maybe we should show TypeReps without puns (List, Tuple, Type). - - - - - 216deefd by Matthew Pickering at 2022-12-08T22:45:27-05:00 Add test for #22162 - - - - - 5d0a311f by Matthew Pickering at 2022-12-08T22:45:27-05:00 ci: Add job to test interface file determinism guarantees In this job we can run on every commit we add a test which builds the Cabal library twice and checks that the ABI hash and interface hash is stable across the two builds. * We run the test 20 times to try to weed out any race conditions due to `-j` * We run the builds in different temporary directories to try to weed out anything related to build directory affecting ABI or interface file hash. Fixes #22180 - - - - - 0a76d7d4 by Matthew Pickering at 2022-12-08T22:45:27-05:00 ci: Add job for testing interface stability across builds The idea is that both the bindists should product libraries with the same ABI and interface hash. So the job checks with ghc-pkg to make sure the computed ABI is the same. In future this job can be extended to check for the other facets of interface determinism. Fixes #22180 - - - - - 74c9bf91 by Matthew Pickering at 2022-12-08T22:45:27-05:00 backpack: Be more careful when adding together ImportAvails There was some code in the signature merging logic which added together the ImportAvails of the signature and the signature which was merged into it. This had the side-effect of making the merged signature depend on the signature (via a normal module dependency). The intention was to propagate orphan instances through the merge but this also messed up recompilation logic because we shouldn't be attempting to load B.hi when mergeing it. The fix is to just combine the part of ImportAvails that we intended to (transitive info, orphan instances and type family instances) rather than the whole thing. - - - - - d122e022 by Matthew Pickering at 2022-12-08T22:45:27-05:00 Fix mk_mod_usage_info if the interface file is not already loaded In #22217 it was observed that the order modules are compiled in affects the contents of an interface file. This was because a module dependended on another module indirectly, via a re-export but the interface file for this module was never loaded because the symbol was never used in the file. If we decide that we depend on a module then we jolly well ought to record this fact in the interface file! Otherwise it could lead to very subtle recompilation bugs if the dependency is not tracked and the module is updated. Therefore the best thing to do is just to make sure the file is loaded by calling the `loadSysInterface` function. This first checks the caches (like we did before) but then actually goes to find the interface on disk if it wasn't loaded. Fixes #22217 - - - - - ea25088d by lrzlin at 2022-12-08T22:46:06-05:00 Add initial support for LoongArch Architecture. - - - - - 9eb9d2f4 by Andrew Lelechenko at 2022-12-08T22:46:47-05:00 Update submodule mtl to 2.3.1, parsec to 3.1.15.1, haddock and Cabal to HEAD - - - - - 08d8fe2a by Andrew Lelechenko at 2022-12-08T22:46:47-05:00 Allow mtl-2.3 in hadrian - - - - - 3807a46c by Andrew Lelechenko at 2022-12-08T22:46:47-05:00 Support mtl-2.3 in check-exact - - - - - ef702a18 by Andrew Lelechenko at 2022-12-08T22:46:47-05:00 Fix tests - - - - - 3144e8ff by Sebastian Graf at 2022-12-08T22:47:22-05:00 Make (^) INLINE (#22324) So that we get to cancel away the allocation for the lazily used base. We can move `powImpl` (which *is* strict in the base) to the top-level so that we don't duplicate too much code and move the SPECIALISATION pragmas onto `powImpl`. The net effect of this change is that `(^)` plays along much better with inlining thresholds and loopification (#22227), for example in `x2n1`. Fixes #22324. - - - - - 1d3a8b8e by Matthew Pickering at 2022-12-08T22:47:59-05:00 Typeable: Fix module locations of some definitions in GHC.Types There was some confusion in Data.Typeable about which module certain wired-in things were defined in. Just because something is wired-in doesn't mean it comes from GHC.Prim, in particular things like LiftedRep and RuntimeRep are defined in GHC.Types and that's the end of the story. Things like Int#, Float# etc are defined in GHC.Prim as they have no Haskell definition site at all so we need to generate type representations for them (which live in GHC.Types). Fixes #22510 - - - - - 0f7588b5 by Sebastian Graf at 2022-12-08T22:48:34-05:00 Make `drop` and `dropWhile` fuse (#18964) I copied the fusion framework we have in place for `take`. T18964 asserts that we regress neither when fusion fires nor when it doesn't. Fixes #18964. - - - - - 26e71562 by Sebastian Graf at 2022-12-08T22:49:10-05:00 Do not strictify a DFun's parameter dictionaries (#22549) ... thus fixing #22549. The details are in the refurbished and no longer dead `Note [Do not strictify a DFun's parameter dictionaries]`. There's a regression test in T22549. - - - - - 36093407 by John Ericson at 2022-12-08T22:49:45-05:00 Delete `rts/package.conf.in` It is a relic of the Make build system. The RTS now uses a `package.conf` file generated the usual way by Cabal. - - - - - b0cc2fcf by Krzysztof Gogolewski at 2022-12-08T22:50:21-05:00 Fixes around primitive literals * The SourceText of primitive characters 'a'# did not include the #, unlike for other primitive literals 1#, 1##, 1.0#, 1.0##, "a"#. We can now remove the function pp_st_suffix, which was a hack to add the # back. * Negative primitive literals shouldn't use parentheses, as described in Note [Printing of literals in Core]. Added a testcase to T14681. - - - - - aacf616d by Bryan Richter at 2022-12-08T22:50:56-05:00 testsuite: Mark conc024 fragile on Windows - - - - - ed239a24 by Ryan Scott at 2022-12-09T09:42:16-05:00 Document TH splices' interaction with INCOHERENT instances Top-level declaration splices can having surprising interactions with `INCOHERENT` instances, as observed in #22492. This patch resolves #22492 by documenting this strange interaction in the GHC User's Guide. [ci skip] - - - - - 1023b432 by Mike Pilgrem at 2022-12-09T09:42:56-05:00 Fix #22300 Document GHC's extensions to valid whitespace - - - - - 79b0cec0 by Luite Stegeman at 2022-12-09T09:43:38-05:00 Add support for environments that don't have setImmediate - - - - - 5b007ec5 by Luite Stegeman at 2022-12-09T09:43:38-05:00 Fix bound thread status - - - - - 65335d10 by Matthew Pickering at 2022-12-09T20:15:45-05:00 Update containers submodule This contains a fix necessary for the multi-repl to work on GHC's code base where we try to load containers and template-haskell into the same session. - - - - - 4937c0bb by Matthew Pickering at 2022-12-09T20:15:45-05:00 hadrian-multi: Put interface files in separate directories Before we were putting all the interface files in the same directory which was leading to collisions if the files were called the same thing. - - - - - 8acb5b7b by Matthew Pickering at 2022-12-09T20:15:45-05:00 hadrian-toolargs: Add filepath to allowed repl targets - - - - - 5949d927 by Matthew Pickering at 2022-12-09T20:15:45-05:00 driver: Set correct UnitId when rehydrating modules We were not setting the UnitId before rehydrating modules which just led to us attempting to find things in the wrong HPT. The test for this is the hadrian-multi command (which is now added as a CI job). Fixes #22222 - - - - - ab06c0f0 by Matthew Pickering at 2022-12-09T20:15:45-05:00 ci: Add job to test hadrian-multi command I am not sure this job is good because it requires booting HEAD with HEAD, but it should be fine. - - - - - fac3e568 by Matthew Pickering at 2022-12-09T20:16:20-05:00 hadrian: Update bootstrap plans to 9.2.* series and 9.4.* series. This updates the build plans for the most recent compiler versions, as well as fixing the hadrian-bootstrap-gen script to a specific GHC version. - - - - - 195b08b4 by Matthew Pickering at 2022-12-09T20:16:20-05:00 ci: Bump boot images to use ghc-9.4.3 Also updates the bootstrap jobs to test booting 9.2 and 9.4. - - - - - c658c580 by Matthew Pickering at 2022-12-09T20:16:20-05:00 hlint: Removed redundant UnboxedSums pragmas UnboxedSums is quite confusingly implied by UnboxedTuples, alas, just the way it is. See #22485 - - - - - b3e98a92 by Oleg Grenrus at 2022-12-11T12:26:17-05:00 Add heqT, a kind-heterogeneous variant of heq CLC proposal https://github.com/haskell/core-libraries-committee/issues/99 - - - - - bfd7c1e6 by Andrew Lelechenko at 2022-12-11T12:26:55-05:00 Document that Bifunctor instances for tuples are lawful only up to laziness - - - - - 5d1a1881 by Bryan Richter at 2022-12-12T16:22:36-05:00 Mark T21336a fragile - - - - - c30accc2 by Matthew Pickering at 2022-12-12T16:23:11-05:00 Add test for #21476 This issues seems to have been fixed since the ticket was made, so let's add a test and move on. Fixes #21476 - - - - - e9d74a3e by Sebastian Graf at 2022-12-13T22:18:39-05:00 Respect -XStrict in the pattern-match checker (#21761) We were missing a call to `decideBangHood` in the pattern-match checker. There is another call in `matchWrapper.mk_eqn_info` which seems redundant but really is not; see `Note [Desugaring -XStrict matches in Pmc]`. Fixes #21761. - - - - - 884790e2 by Gergő Érdi at 2022-12-13T22:19:14-05:00 Fix loop in the interface representation of some `Unfolding` fields As discovered in #22272, dehydration of the unfolding info of a recursive definition used to involve a traversal of the definition itself, which in turn involves traversing the unfolding info. Hence, a loop. Instead, we now store enough data in the interface that we can produce the unfolding info without this traversal. See Note [Tying the 'CoreUnfolding' knot] for details. Fixes #22272 Co-authored-by: Simon Peyton Jones <simon.peytonjones@gmail.com> - - - - - 9f301189 by Alan Zimmerman at 2022-12-13T22:19:50-05:00 EPA: When splitting out header comments, keep ones for first decl Any comments immediately preceding the first declaration are no longer kept as header comments, but attach to the first declaration instead. - - - - - 8b1f1b45 by Sylvain Henry at 2022-12-13T22:20:28-05:00 JS: fix object file name comparison (#22578) - - - - - e9e161bb by Bryan Richter at 2022-12-13T22:21:03-05:00 configure: Bump min bootstrap GHC version to 9.2 - - - - - 75855643 by Ben Gamari at 2022-12-15T03:54:02-05:00 hadrian: Don't enable TSAN in stage0 build - - - - - da7b51d8 by Ben Gamari at 2022-12-15T03:54:02-05:00 cmm: Introduce blockConcat - - - - - 34f6b09c by Ben Gamari at 2022-12-15T03:54:02-05:00 cmm: Introduce MemoryOrderings - - - - - 43beaa7b by Ben Gamari at 2022-12-15T03:54:02-05:00 llvm: Respect memory specified orderings - - - - - 8faf74fc by Ben Gamari at 2022-12-15T03:54:02-05:00 Codegen/x86: Eliminate barrier for relaxed accesses - - - - - 6cc3944a by Ben Gamari at 2022-12-15T03:54:02-05:00 cmm/Parser: Reduce some repetition - - - - - 6c9862c4 by Ben Gamari at 2022-12-15T03:54:02-05:00 cmm/Parser: Add syntax for ordered loads and stores - - - - - 748490d2 by Ben Gamari at 2022-12-15T03:54:02-05:00 cmm/Parser: Atomic load syntax Originally I had thought I would just use the `prim` call syntax instead of introducing new syntax for atomic loads. However, it turns out that `prim` call syntax tends to make things quite unreadable. This new syntax seems quite natural. - - - - - 28c6781a by Ben Gamari at 2022-12-15T03:54:02-05:00 codeGen: Introduce ThreadSanitizer instrumentation This introduces a new Cmm pass which instruments the program with ThreadSanitizer annotations, allowing full tracking of mutator memory accesses via TSAN. - - - - - d97aa311 by Ben Gamari at 2022-12-15T03:54:02-05:00 Hadrian: Drop TSAN_ENABLED define from flavour This is redundant since the TSANUtils.h already defines it. - - - - - 86974ef1 by Ben Gamari at 2022-12-15T03:54:02-05:00 hadrian: Enable Cmm instrumentation in TSAN flavour - - - - - 93723290 by Ben Gamari at 2022-12-15T03:54:02-05:00 rts: Ensure that global regs are never passed as fun call args This is in general unsafe as they may be clobbered if they are mapped to caller-saved machine registers. See Note [Register parameter passing]. - - - - - 2eb0fb87 by Matthew Pickering at 2022-12-15T03:54:39-05:00 Package Imports: Get candidate packages also from re-exported modules Previously we were just looking at the direct imports to try and work out what a package qualifier could apply to but #22333 pointed out we also needed to look for reexported modules. Fixes #22333 - - - - - 552b7908 by Ben Gamari at 2022-12-15T03:55:15-05:00 compiler: Ensure that MutVar operations have necessary barriers Here we add acquire and release barriers in readMutVar# and writeMutVar#, which are necessary for soundness. Fixes #22468. - - - - - 933d61a4 by Simon Peyton Jones at 2022-12-15T03:55:51-05:00 Fix bogus test in Lint The Lint check for branch compatiblity within an axiom, in GHC.Core.Lint.compatible_branches was subtly different to the check made when contructing an axiom, in GHC.Core.FamInstEnv.compatibleBranches. The latter is correct, so I killed the former and am now using the latter. On the way I did some improvements to pretty-printing and documentation. - - - - - 03ed0b95 by Ryan Scott at 2022-12-15T03:56:26-05:00 checkValidInst: Don't expand synonyms when splitting sigma types Previously, the `checkValidInst` function (used when checking that an instance declaration is headed by an actual type class, not a type synonym) was using `tcSplitSigmaTy` to split apart the `forall`s and instance context. This is incorrect, however, as `tcSplitSigmaTy` expands type synonyms, which can cause instances headed by quantified constraint type synonyms to be accepted erroneously. This patch introduces `splitInstTyForValidity`, a variant of `tcSplitSigmaTy` specialized for validity checking that does _not_ expand type synonyms, and uses it in `checkValidInst`. Fixes #22570. - - - - - ed056bc3 by Ben Gamari at 2022-12-16T16:12:44-05:00 rts/Messages: Refactor This doesn't change behavior but makes the code a bit easier to follow. - - - - - 7356f8e0 by Ben Gamari at 2022-12-16T16:12:44-05:00 rts/ThreadPaused: Ordering fixes - - - - - 914f0025 by Ben Gamari at 2022-12-16T16:12:44-05:00 eventlog: Silence spurious data race - - - - - fbc84244 by Ben Gamari at 2022-12-16T16:12:44-05:00 Introduce SET_INFO_RELEASE for Cmm - - - - - 821b5472 by Ben Gamari at 2022-12-16T16:12:44-05:00 rts: Use fences instead of explicit barriers - - - - - 2228c999 by Ben Gamari at 2022-12-16T16:12:44-05:00 rts/stm: Fix memory ordering in readTVarIO# See #22421. - - - - - 99269b9f by Ben Gamari at 2022-12-16T16:12:44-05:00 Improve heap memory barrier Note Also introduce MUT_FIELD marker in Closures.h to document mutable fields. - - - - - 70999283 by Ben Gamari at 2022-12-16T16:12:44-05:00 rts: Introduce getNumCapabilities And ensure accesses to n_capabilities are atomic (although with relaxed ordering). This is necessary as RTS API callers may concurrently call into the RTS without holding a capability. - - - - - 98689f77 by Ben Gamari at 2022-12-16T16:12:44-05:00 ghc: Fix data race in dump file handling Previously the dump filename cache would use a non-atomic update which could potentially result in lost dump contents. Note that this is still a bit racy since the first writer may lag behind a later appending writer. - - - - - 605d9547 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Always use atomics for context_switch and interrupt Since these are modified by the timer handler. - - - - - 86f20258 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts/Timer: Always use atomic operations As noted in #22447, the existence of the pthread-based ITimer implementation means that we cannot assume that the program is single-threaded. - - - - - f8e901dc by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Encapsulate recent_activity access This makes it easier to ensure that it is accessed using the necessary atomic operations. - - - - - e0affaa9 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Encapsulate access to capabilities array - - - - - 7ca683e4 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Encapsulate sched_state - - - - - 1cf13bd0 by Ben Gamari at 2022-12-16T16:12:45-05:00 PrimOps: Fix benign MutVar race Relaxed ordering is fine here since the later CAS implies a release. - - - - - 3d2a7e08 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Style fix - - - - - 82c62074 by Ben Gamari at 2022-12-16T16:12:45-05:00 compiler: Use release store in eager blackholing - - - - - eb1a0136 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Fix ordering of makeStableName - - - - - ad0e260a by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Use ordered accesses instead of explicit barriers - - - - - a3eccf06 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Statically allocate capabilities This is a rather simplistic way of solving #17289. - - - - - 287fa3fb by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Ensure that all accesses to pending_sync are atomic - - - - - 351eae58 by Ben Gamari at 2022-12-16T16:12:45-05:00 rts: Note race with wakeBlockingQueue - - - - - 5acf33dd by Andrew Lelechenko at 2022-12-16T16:13:22-05:00 Bump submodule directory to 1.3.8.0 and hpc to HEAD - - - - - 0dd95421 by Andrew Lelechenko at 2022-12-16T16:13:22-05:00 Accept allocations increase on Windows This is because of `filepath-1.4.100.0` and AFPP, causing increasing round-trips between lists and ByteArray. See #22625 for discussion. Metric Increase: MultiComponentModules MultiComponentModulesRecomp MultiLayerModules MultiLayerModulesRecomp T10421 T10547 T12150 T12227 T12234 T12425 T13035 T13253 T13253-spj T13701 T13719 T15703 T16875 T18140 T18282 T18304 T18698a T18698b T18923 T20049 T21839c T21839r T5837 T6048 T9198 T9961 TcPlugin_RewritePerf hard_hole_fits - - - - - ef9ac9d2 by Cheng Shao at 2022-12-16T16:13:59-05:00 testsuite: Mark T9405 as fragile instead of broken on Windows It's starting to pass again, and the unexpected pass blocks CI. - - - - - 1f3abd85 by Cheng Shao at 2022-12-16T21:16:28+00:00 compiler: remove obsolete commented code in wasm NCG It was just a temporary hack to workaround a bug in the relooper, that bug has been fixed long before the wasm backend is merged. - - - - - e3104eab by Cheng Shao at 2022-12-16T21:16:28+00:00 compiler: add missing export list of GHC.CmmToAsm.Wasm.FromCmm Also removes some unreachable code here. - - - - - 1c6930bf by Cheng Shao at 2022-12-16T21:16:28+00:00 compiler: change fallback function signature to Cmm function signature in wasm NCG In the wasm NCG, when handling a `CLabel` of undefined function without knowing its function signature, we used to fallback to `() -> ()` which is accepted by `wasm-ld`. This patch changes it to the signature of Cmm functions, which equally works, but would be required when we emit tail call instructions. - - - - - 8a81d9d9 by Cheng Shao at 2022-12-16T21:16:28+00:00 compiler: add optional tail-call support in wasm NCG When the `-mtail-call` clang flag is passed at configure time, wasm tail-call extension is enabled, and the wasm NCG will emit `return_call`/`return_call_indirect` instructions to take advantage of it and avoid the `StgRun` trampoline overhead. Closes #22461. - - - - - d1431cc0 by Cheng Shao at 2022-12-17T08:07:15-05:00 base: add missing autoconf checks for waitpid/umask These are not present in wasi-libc. Required for fixing #22589 - - - - - da3f1e91 by Cheng Shao at 2022-12-17T08:07:51-05:00 compiler: make .wasm the default executable extension on wasm32 Following convention as in other wasm toolchains. Fixes #22594. - - - - - ad21f4ef by Cheng Shao at 2022-12-17T08:07:51-05:00 ci: support hello.wasm in ci.sh cross testing logic - - - - - 6fe2d778 by amesgen at 2022-12-18T19:33:49-05:00 Correct `exitWith` Haddocks The `IOError`-specific `catch` in the Prelude is long gone. - - - - - b3eacd64 by Ben Gamari at 2022-12-18T19:34:24-05:00 rts: Drop racy assertion 0e274c39bf836d5bb846f5fa08649c75f85326ac added an assertion in `dirty_MUT_VAR` checking that the MUT_VAR being dirtied was clean. However, this isn't necessarily the case since another thread may have raced us to dirty the object. - - - - - 761c1f49 by Ben Gamari at 2022-12-18T19:35:00-05:00 rts/libdw: Silence uninitialized usage warnings As noted in #22538, previously some GCC versions warned that various locals in Libdw.c may be used uninitialized. Although this wasn't strictly true (since they were initialized in an inline assembler block) we fix this by providing explicit empty initializers. Fixes #22538 - - - - - 5e047eff by Matthew Pickering at 2022-12-20T15:12:04+00:00 testsuite: Mark T16392 as fragile on windows See #22649 - - - - - 703a4665 by M Farkas-Dyck at 2022-12-20T21:14:46-05:00 Scrub some partiality in `GHC.Cmm.Info.Build`: `doSRTs` takes a `[(CAFSet, CmmDecl)]` but truly wants a `[(CAFSet, CmmStatics)]`. - - - - - 9736ab74 by Matthew Pickering at 2022-12-20T21:15:22-05:00 packaging: Fix upload_ghc_libs.py script This change reflects the changes where .cabal files are now generated by hadrian rather than ./configure. Fixes #22518 - - - - - 7c6de18d by Ben Gamari at 2022-12-20T21:15:57-05:00 configure: Drop uses of AC_PROG_CC_C99 As noted in #22566, this macro is deprecated as of autoconf-2.70 `AC_PROG_CC` now sets `ac_cv_prog_cc_c99` itself. Closes #22566. - - - - - 36c5d98e by Ben Gamari at 2022-12-20T21:15:57-05:00 configure: Use AS_HELP_STRING instead of AC_HELP_STRING The latter has been deprecated. See #22566. - - - - - befe6ff8 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00 GHCi.UI: fix various usages of head and tail - - - - - 666d0ba7 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00 GHCi.UI: avoid head and tail in parseCallEscape and around - - - - - 5d96fd50 by Andrew Lelechenko at 2022-12-20T21:16:37-05:00 Make GHC.Driver.Main.hscTcRnLookupRdrName to return NonEmpty - - - - - 3ce2ab94 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00 Allow transformers-0.6 in ghc, ghci, ghc-bin and hadrian - - - - - 954de93a by Andrew Lelechenko at 2022-12-21T06:17:56-05:00 Update submodule haskeline to HEAD (to allow transformers-0.6) - - - - - cefbeec3 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00 Update submodule transformers to 0.6.0.4 - - - - - b4730b62 by Andrew Lelechenko at 2022-12-21T06:17:56-05:00 Fix tests T13253 imports MonadTrans, which acquired a quantified constraint in transformers-0.6, thus increase in allocations Metric Increase: T13253 - - - - - 0be75261 by Simon Peyton Jones at 2022-12-21T06:18:32-05:00 Abstract over the right free vars Fix #22459, in two ways: (1) Make the Specialiser not create a bogus specialisation if it is presented by strangely polymorphic dictionary. See Note [Weird special case in SpecDict] in GHC.Core.Opt.Specialise (2) Be more careful in abstractFloats See Note [Which type variables to abstract over] in GHC.Core.Opt.Simplify.Utils. So (2) stops creating the excessively polymorphic dictionary in abstractFloats, while (1) stops crashing if some other pass should nevertheless create a weirdly polymorphic dictionary. - - - - - df7bc6b3 by Ying-Ruei Liang (TheKK) at 2022-12-21T14:31:54-05:00 rts: explicitly store return value of ccall checkClosure to prevent type error (#22617) - - - - - e193e537 by Simon Peyton Jones at 2022-12-21T14:32:30-05:00 Fix shadowing lacuna in OccurAnal Issue #22623 demonstrated another lacuna in the implementation of wrinkle (BS3) in Note [The binder-swap substitution] in the occurrence analyser. I was failing to add TyVar lambda binders using addInScope/addOneInScope and that led to a totally bogus binder-swap transformation. Very easy to fix. - - - - - 3d55d8ab by Simon Peyton Jones at 2022-12-21T14:32:30-05:00 Fix an assertion check in addToEqualCtList The old assertion saw that a constraint ct could rewrite itself (of course it can) and complained (stupid). Fixes #22645 - - - - - ceb2e9b9 by Ben Gamari at 2022-12-21T15:26:08-05:00 configure: Bump version to 9.6 - - - - - fb4d36c4 by Ben Gamari at 2022-12-21T15:27:49-05:00 base: Bump version to 4.18 Requires various submodule bumps. - - - - - 93ee7e90 by Ben Gamari at 2022-12-21T15:27:49-05:00 ghc-boot: Fix bootstrapping - - - - - fc3a2232 by Ben Gamari at 2022-12-22T13:45:06-05:00 Bump GHC version to 9.7 - - - - - 914f7fe3 by Andreas Klebinger at 2022-12-22T23:36:10-05:00 Don't consider large byte arrays/compact regions pinned. Workaround for #22255 which showed how treating large/compact regions as pinned could cause segfaults. - - - - - 32b32d7f by Matthew Pickering at 2022-12-22T23:36:46-05:00 hadrian bindist: Install manpages to share/man/man1/ghc.1 When the installation makefile was copied over the manpages were no longer installed in the correct place. Now we install it into share/man/man1/ghc.1 as the make build system did. Fixes #22371 - - - - - b3ddf803 by Ben Gamari at 2022-12-22T23:37:23-05:00 rts: Drop paths from configure from cabal file A long time ago we would rely on substitutions from the configure script to inject paths of the include and library directories of libffi and libdw. However, now these are instead handled inside Hadrian when calling Cabal's `configure` (see the uses of `cabalExtraDirs` in Hadrian's `Settings.Packages.packageArgs`). While the occurrences in the cabal file were redundant, they did no harm. However, since b5c714545abc5f75a1ffdcc39b4bfdc7cd5e64b4 they have no longer been interpolated. @mpickering noticed the suspicious uninterpolated occurrence of `@FFIIncludeDir@` in #22595, prompting this commit to finally remove them. - - - - - b2c7523d by Ben Gamari at 2022-12-22T23:37:59-05:00 Bump libffi-tarballs submodule We will now use libffi-3.4.4. - - - - - 3699a554 by Alan Zimmerman at 2022-12-22T23:38:35-05:00 EPA: Make EOF position part of AnnsModule Closes #20951 Closes #19697 - - - - - 99757ce8 by Sylvain Henry at 2022-12-22T23:39:13-05:00 JS: fix support for -outputdir (#22641) The `-outputdir` option wasn't correctly handled with the JS backend because the same code path was used to handle both objects produced by the JS backend and foreign .js files. Now we clearly distinguish the two in the pipeline, fixing the bug. - - - - - 02ed7d78 by Simon Peyton Jones at 2022-12-22T23:39:49-05:00 Refactor mkRuntimeError This patch fixes #22634. Because we don't have TYPE/CONSTRAINT polymorphism, we need two error functions rather than one. I took the opportunity to rname runtimeError to impossibleError, to line up with mkImpossibleExpr, and avoid confusion with the genuine runtime-error-constructing functions. - - - - - 35267f07 by Ben Gamari at 2022-12-22T23:40:32-05:00 base: Fix event manager shutdown race on non-Linux platforms During shutdown it's possible that we will attempt to use a closed fd to wakeup another capability's event manager. On the Linux eventfd path we were careful to handle this. However on the non-Linux path we failed to do so. Fix this. - - - - - 317f45c1 by Simon Peyton Jones at 2022-12-22T23:41:07-05:00 Fix unifier bug: failing to decompose over-saturated type family This simple patch fixes #22647 - - - - - 14b2e3d3 by Ben Gamari at 2022-12-22T23:41:42-05:00 rts/m32: Fix sanity checking Previously we would attempt to clear pages which were marked as read-only. Fix this. - - - - - 16a1bcd1 by Matthew Pickering at 2022-12-23T09:15:24+00:00 ci: Move wasm pipelines into nightly rather than master See #22664 for the changes which need to be made to bring one of these back to the validate pipeline. - - - - - 18d2acd2 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Fix race in marking of blackholes We must use an acquire-fence when marking to ensure that the indirectee is visible. - - - - - 11241efa by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Fix segment list races - - - - - 602455c9 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Use atomic when looking at bd->gen Since it may have been mutated by a moving GC. - - - - - 9d63b160 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Eliminate race in bump_static_flag To ensure that we don't race with a mutator entering a new CAF we take the SM mutex before touching static_flag. The other option here would be to instead modify newCAF to use a CAS but the present approach is a bit safer. - - - - - 26837523 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Ensure that mutable fields have acquire barrier - - - - - 8093264a by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Fix races in collector status tracking Mark a number of accesses to do with tracking of the status of the concurrent collection thread as atomic. No interesting races here, merely necessary to satisfy TSAN. - - - - - 387d4fcc by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Make segment state updates atomic - - - - - 543cae00 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Refactor update remembered set initialization This avoids a lock inversion between the storage manager mutex and the stable pointer table mutex by not dropping the SM_MUTEX in nonmovingCollect. This requires quite a bit of rejiggering but it does seem like a better strategy. - - - - - c9936718 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Ensure that we aren't holding locks when closing them TSAN complains about this sort of thing. - - - - - 0cd31f7d by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Make bitmap accesses atomic This is a benign race on any sensible hard since these are byte accesses. Nevertheless, atomic accesses are necessary to satisfy TSAN. - - - - - d3fe110a by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Fix benign race in update remembered set check Relaxed load is fine here since we will take the lock before looking at the list. - - - - - ab6cf893 by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Fix race in shortcutting We must use an acquire load to read the info table pointer since if we find an indirection we must be certain that we see the indirectee. - - - - - 36c9f23c by Ben Gamari at 2022-12-23T19:09:30-05:00 nonmoving: Make free list counter accesses atomic Since these may race with the allocator(s). - - - - - aebef31c by doyougnu at 2022-12-23T19:10:09-05:00 add GHC.Utils.Binary.foldGet' and use for Iface A minor optimization to remove lazy IO and a lazy accumulator strictify foldGet' IFace.Binary: use strict foldGet' remove superfluous bang - - - - - 5eb357d9 by Ben Gamari at 2022-12-24T00:41:05-05:00 compiler: Ensure that GHC toolchain is first in search path As noted in #22561, it is important that GHC's toolchain look first for its own headers and libraries to ensure that the system's are not found instead. If this happens things can break in surprising ways (e.g. see #22561). - - - - - cbaebfb9 by Matthew Pickering at 2022-12-24T00:41:40-05:00 head.hackage: Use slow-validate bindist for linting jobs This enables the SLOW_VALIDATE env var for the linting head.hackage jobs, namely the jobs enabled manually, by the label or on the nightly build now use the deb10-numa-slow-validate bindist which has assertions enabled. See #22623 for a ticket which was found by using this configuration already! The head.hackage jobs triggered by upstream CI are now thusly: hackage-lint: Can be triggered on any MR, normal validate pipeline or nightly build. Runs head.hackage with -dlint and a slow-validate bindist hackage-label-lint: Trigged on MRs with "user-facing" label, runs the slow-validate head.hackage build with -dlint. nightly-hackage-lint: Runs automatically on nightly pipelines with slow-validate + dlint config. nightly-hackage-perf: Runs automaticaly on nightly pipelines with release build and eventlogging enabled. release-hackage-lint: Runs automatically on release pipelines with -dlint on a release bindist. - - - - - f4850f36 by Matthew Pickering at 2022-12-24T00:41:40-05:00 ci: Don't run abi-test-nightly on release jobs The test is not configured to get the correct dependencies for the release pipelines (and indeed stops the release pipeline being run at all) - - - - - c264b06b by Matthew Pickering at 2022-12-24T00:41:40-05:00 ci: Run head.hackage jobs on upstream-testing branch rather than master This change allows less priviledged users to trigger head.hackage jobs because less permissions are needed to trigger jobs on the upstream-testing branch, which is not protected. There is a CI job which updates upstream-testing each hour to the state of the master branch so it should always be relatively up-to-date. - - - - - 63b97430 by Ben Gamari at 2022-12-24T00:42:16-05:00 llvmGen: Fix relaxed ordering Previously I used LLVM's `unordered` ordering for the C11 `relaxed` ordering. However, this is wrong and should rather use the LLVM `monotonic` ordering. Fixes #22640 - - - - - f42ba88f by Ben Gamari at 2022-12-24T00:42:16-05:00 gitlab-ci: Introduce aarch64-linux-llvm job This nightly job will ensure that we don't break the LLVM backend on AArch64/Linux by bootstrapping GHC. This would have caught #22640. - - - - - 6d62f6bf by Matthew Pickering at 2022-12-24T00:42:51-05:00 Store RdrName rather than OccName in Holes In #20472 it was pointed out that you couldn't defer out of scope but the implementation collapsed a RdrName into an OccName to stuff it into a Hole. This leads to the error message for a deferred qualified name dropping the qualification which affects the quality of the error message. This commit adds a bit more structure to a hole, so a hole can replace a RdrName without losing information about what that RdrName was. This is important when printing error messages. I also added a test which checks the Template Haskell deferral of out of scope qualified names works properly. Fixes #22130 - - - - - 3c3060e4 by Richard Eisenberg at 2022-12-24T17:34:19+00:00 Drop support for kind constraints. This implements proposal 547 and closes ticket #22298. See the proposal and ticket for motivation. Compiler perf improves a bit Metrics: compile_time/bytes allocated ------------------------------------- CoOpt_Singletons(normal) -2.4% GOOD T12545(normal) +1.0% T13035(normal) -13.5% GOOD T18478(normal) +0.9% T9872d(normal) -2.2% GOOD geo. mean -0.2% minimum -13.5% maximum +1.0% Metric Decrease: CoOpt_Singletons T13035 T9872d - - - - - 6d7d4393 by Ben Gamari at 2022-12-24T21:09:56-05:00 hadrian: Ensure that linker scripts are used when merging objects In #22527 @rui314 inadvertantly pointed out a glaring bug in Hadrian's implementation of the object merging rules: unlike the old `make` build system we utterly failed to pass the needed linker scripts. Fix this. - - - - - a5bd0eb8 by Andrew Lelechenko at 2022-12-24T21:10:34-05:00 Document infelicities of instance Ord Double and workarounds - - - - - 62b9a7b2 by Zubin Duggal at 2023-01-03T12:22:11+00:00 Force the Docs structure to prevent leaks in GHCi with -haddock without -fwrite-interface Involves adding many new NFData instances. Without forcing Docs, references to the TcGblEnv for each module are retained by the Docs structure. Usually these are forced when the ModIface is serialised but not when we aren't writing the interface. - - - - - 21bedd84 by Facundo Domínguez at 2023-01-03T23:27:30-05:00 Explain the auxiliary functions of permutations - - - - - 32255d05 by Matthew Pickering at 2023-01-04T11:58:42+00:00 compiler: Add -f[no-]split-sections flags Here we add a `-fsplit-sections` flag which may some day replace `-split-sections`. This has the advantage of automatically providing a `-fno-split-sections` flag, which is useful for our packaging because we enable `-split-sections` by default but want to disable it in certain configurations. - - - - - e640940c by Matthew Pickering at 2023-01-04T11:58:42+00:00 hadrian: Fix computation of tables_next_to_code for outOfTreeCompiler This copy-pasto was introduced in de5fb3489f2a9bd6dc75d0cb8925a27fe9b9084b - - - - - 15bee123 by Matthew Pickering at 2023-01-04T11:58:42+00:00 hadrian: Add test:all_deps to build just testsuite dependencies Fixes #22534 - - - - - fec6638e by Matthew Pickering at 2023-01-04T11:58:42+00:00 hadrian: Add no_split_sections tranformer This transformer reverts the effect of `split_sections`, which we intend to use for platforms which don't support split sections. In order to achieve this we have to modify the implemntation of the split_sections transformer to store whether we are enabling split_sections directly in the `Flavour` definition. This is because otherwise there's no convenient way to turn off split_sections due to having to pass additional linker scripts when merging objects. - - - - - 3dc05726 by Matthew Pickering at 2023-01-04T11:58:42+00:00 check-exact: Fix build with -Werror - - - - - 53a6ae7a by Matthew Pickering at 2023-01-04T11:58:42+00:00 ci: Build all test dependencies with in-tree compiler This means that these executables will honour flavour transformers such as "werror". Fixes #22555 - - - - - 32e264c1 by Matthew Pickering at 2023-01-04T11:58:42+00:00 hadrian: Document using GHC environment variable to select boot compiler Fixes #22340 - - - - - be9dd9b0 by Matthew Pickering at 2023-01-04T11:58:42+00:00 packaging: Build perf builds with -split-sections In 8f71d958 the make build system was made to use split-sections on linux systems but it appears this logic never made it to hadrian. There is the split_sections flavour transformer but this doesn't appear to be used for perf builds on linux. This is disbled on deb9 and windows due to #21670 Closes #21135 - - - - - 00dc5106 by Matthew Pickering at 2023-01-04T14:32:45-05:00 sphinx: Use modern syntax for extlinks This fixes the following build error: ``` Command line: /opt/homebrew/opt/sphinx-doc/bin/sphinx-build -b man -d /private/tmp/extra-dir-55768274273/.doctrees-man -n -w /private/tmp/extra-dir-55768274273/.log docs/users_guide /private/tmp/extra-dir-55768274273 ===> Command failed with error code: 2 Exception occurred: File "/opt/homebrew/Cellar/sphinx-doc/6.0.0/libexec/lib/python3.11/site-packages/sphinx/ext/extlinks.py", line 101, in role title = caption % part ~~~~~~~~^~~~~~ TypeError: not all arguments converted during string formatting ``` I tested on Sphinx-5.1.1 and Sphinx-6.0.0 Thanks for sterni for providing instructions about how to test using sphinx-6.0.0. Fixes #22690 - - - - - 541aedcd by Krzysztof Gogolewski at 2023-01-05T10:48:34-05:00 Misc cleanup - Remove unused uniques and hs-boot declarations - Fix types of seq and unsafeCoerce# - Remove FastString/String roundtrip in JS - Use TTG to enforce totality - Remove enumeration in Heap/Inspect; the 'otherwise' clause serves the primitive types well. - - - - - 22bb8998 by Alan Zimmerman at 2023-01-05T10:49:09-05:00 EPA: Do not collect comments from end of file In Parser.y semis1 production triggers for the virtual semi at the end of the file. This is detected by it being zero length. In this case, do not extend the span being used to gather comments, so any final comments are allocated at the module level instead. - - - - - 9e077999 by Vladislav Zavialov at 2023-01-05T23:01:55-05:00 HsToken in TypeArg (#19623) Updates the haddock submodule. - - - - - b2a2db04 by Matthew Pickering at 2023-01-05T23:02:30-05:00 Revert "configure: Drop uses of AC_PROG_CC_C99" This reverts commit 7c6de18dd3151ead954c210336728e8686c91de6. Centos7 using a very old version of the toolchain (autotools-2.69) where the behaviour of these macros has not yet changed. I am reverting this without haste as it is blocking the 9.6 branch. Fixes #22704 - - - - - 28f8c0eb by Luite Stegeman at 2023-01-06T18:16:24+09:00 Add support for sized literals in the bytecode interpreter. The bytecode interpreter only has branching instructions for word-sized values. These are used for pattern matching. Branching instructions for other types (e.g. Int16# or Word8#) weren't needed, since unoptimized Core or STG never requires branching on types like this. It's now possible for optimized STG to reach the bytecode generator (e.g. fat interface files or certain compiler flag combinations), which requires dealing with various sized literals in branches. This patch improves support for generating bytecode from optimized STG by adding the following new bytecode instructions: TESTLT_I64 TESTEQ_I64 TESTLT_I32 TESTEQ_I32 TESTLT_I16 TESTEQ_I16 TESTLT_I8 TESTEQ_I8 TESTLT_W64 TESTEQ_W64 TESTLT_W32 TESTEQ_W32 TESTLT_W16 TESTEQ_W16 TESTLT_W8 TESTEQ_W8 Fixes #21945 - - - - - ac39e8e9 by Matthew Pickering at 2023-01-06T13:47:00-05:00 Only store Name in FunRhs rather than Id with knot-tied fields All the issues here have been caused by #18758. The goal of the ticket is to be able to talk about things like `LTyClDecl GhcTc`. In the case of HsMatchContext, the correct "context" is whatever we want, and in fact storing just a `Name` is sufficient and correct context, even if the rest of the AST is storing typechecker Ids. So this reverts (#20415, !5579) which intended to get closed to #18758 but didn't really and introduced a few subtle bugs. Printing of an error message in #22695 would just hang, because we would attempt to print the `Id` in debug mode to assertain whether it was empty or not. Printing the Name is fine for the error message. Another consequence is that when `-dppr-debug` was enabled the compiler would hang because the debug printing of the Id would try and print fields which were not populated yet. This also led to 32070e6c2e1b4b7c32530a9566fe14543791f9a6 having to add a workaround for the `checkArgs` function which was probably a very similar bug to #22695. Fixes #22695 - - - - - c306d939 by Matthew Pickering at 2023-01-06T22:08:53-05:00 ci: Upgrade darwin, windows and freebsd CI to use GHC-9.4.3 Fixes #22599 - - - - - 0db496ff by Matthew Pickering at 2023-01-06T22:08:53-05:00 darwin ci: Explicitly pass desired build triple to configure On the zw3rk machines for some reason the build machine was inferred to be arm64. Setting the build triple appropiately resolve this confusion and we produce x86 binaries. - - - - - 2459c358 by Ben Gamari at 2023-01-06T22:09:29-05:00 rts: MUT_VAR is not a StgMutArrPtrs There was previously a comment claiming that the MUT_VAR closure type had the layout of StgMutArrPtrs. - - - - - 6206cb92 by Simon Peyton Jones at 2023-01-07T12:14:40-05:00 Make FloatIn robust to shadowing This MR fixes #22622. See the new Note [Shadowing and name capture] I did a bit of refactoring in sepBindsByDropPoint too. The bug doesn't manifest in HEAD, but it did show up in 9.4, so we should backport this patch to 9.4 - - - - - a960ca81 by Matthew Pickering at 2023-01-07T12:15:15-05:00 T10955: Set DYLD_LIBRARY_PATH for darwin The correct path to direct the dynamic linker on darwin is DYLD_LIBRARY_PATH rather than LD_LIBRARY_PATH. On recent versions of OSX using LD_LIBRARY_PATH seems to have stopped working. For more reading see: https://stackoverflow.com/questions/3146274/is-it-ok-to-use-dyld-library-pat... - - - - - 73484710 by Matthew Pickering at 2023-01-07T12:15:15-05:00 Skip T18623 on darwin (to add to the long list of OSs) On recent versions of OSX, running `ulimit -v` results in ``` ulimit: setrlimit failed: invalid argument ``` Time is too short to work out what random stuff Apple has been doing with ulimit, so just skip the test like we do for other platforms. - - - - - 8c0ea25f by Matthew Pickering at 2023-01-07T12:15:15-05:00 Pass -Wl,-no_fixup_chains to ld64 when appropiate Recent versions of MacOS use a version of ld where `-fixup_chains` is on by default. This is incompatible with our usage of `-undefined dynamic_lookup`. Therefore we explicitly disable `fixup-chains` by passing `-no_fixup_chains` to the linker on darwin. This results in a warning of the form: ld: warning: -undefined dynamic_lookup may not work with chained fixups The manual explains the incompatible nature of these two flags: -undefined treatment Specifies how undefined symbols are to be treated. Options are: error, warning, suppress, or dynamic_lookup. The default is error. Note: dynamic_lookup that depends on lazy binding will not work with chained fixups. A relevant ticket is #22429 Here are also a few other links which are relevant to the issue: Official comment: https://developer.apple.com/forums/thread/719961 More relevant links: https://openradar.appspot.com/radar?id=5536824084660224 https://github.com/python/cpython/issues/97524 Note in release notes: https://developer.apple.com/documentation/xcode-release-notes/xcode-13-relea... e-notes - - - - - 365b3045 by Matthew Pickering at 2023-01-09T02:36:20-05:00 Disable split sections on aarch64-deb10 build See #22722 Failure on this job: https://gitlab.haskell.org/ghc/ghc/-/jobs/1287852 ``` Unexpected failures: /builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T10828.run T10828 [exit code non-0] (ext-interp) /builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T13123.run T13123 [exit code non-0] (ext-interp) /builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T20590.run T20590 [exit code non-0] (ext-interp) Appending 232 stats to file: /builds/ghc/ghc/performance-metrics.tsv ``` ``` Compile failed (exit code 1) errors were: data family D_0 a_1 :: * -> * data instance D_0 GHC.Types.Int GHC.Types.Bool :: * where DInt_2 :: D_0 GHC.Types.Int GHC.Types.Bool data E_3 where MkE_4 :: a_5 -> E_3 data Foo_6 a_7 b_8 where MkFoo_9, MkFoo'_10 :: a_11 -> Foo_6 a_11 b_12 newtype Bar_13 :: * -> GHC.Types.Bool -> * where MkBar_14 :: a_15 -> Bar_13 a_15 b_16 data T10828.T (a_0 :: *) where T10828.MkT :: forall (a_1 :: *) . a_1 -> a_1 -> T10828.T a_1 T10828.MkC :: forall (a_2 :: *) (b_3 :: *) . (GHC.Types.~) a_2 GHC.Types.Int => {T10828.foo :: a_2, T10828.bar :: b_3} -> T10828.T GHC.Types.Int T10828.hs:1:1: error: [GHC-87897] Exception when trying to run compile-time code: ghc-iserv terminated (-4) Code: (do TyConI dec <- runQ $ reify (mkName "T") runIO $ putStrLn (pprint dec) >> hFlush stdout d <- runQ $ [d| data T' a :: Type where MkT' :: a -> a -> T' a MkC' :: forall a b. (a ~ Int) => {foo :: a, bar :: b} -> T' Int |] runIO $ putStrLn (pprint d) >> hFlush stdout ....) *** unexpected failure for T10828(ext-interp) =====> 7000 of 9215 [0, 1, 0] =====> 7000 of 9215 [0, 1, 0] =====> 7000 of 9215 [0, 1, 0] =====> 7000 of 9215 [0, 1, 0] Compile failed (exit code 1) errors were: T13123.hs:1:1: error: [GHC-87897] Exception when trying to run compile-time code: ghc-iserv terminated (-4) Code: ([d| data GADT where MkGADT :: forall k proxy (a :: k). proxy a -> GADT |]) *** unexpected failure for T13123(ext-interp) =====> 7100 of 9215 [0, 2, 0] =====> 7100 of 9215 [0, 2, 0] =====> 7200 of 9215 [0, 2, 0] Compile failed (exit code 1) errors were: T20590.hs:1:1: error: [GHC-87897] Exception when trying to run compile-time code: ghc-iserv terminated (-4) Code: ([d| data T where MkT :: forall a. a -> T |]) *** unexpected failure for T20590(ext-interp) ``` Looks fairly worrying to me. - - - - - 965a2735 by Alan Zimmerman at 2023-01-09T02:36:20-05:00 EPA: exact print HsDocTy To match ghc-exactprint https://github.com/alanz/ghc-exactprint/pull/121 - - - - - 5d65773e by John Ericson at 2023-01-09T20:39:27-05:00 Remove RTS hack for configuring See the brand new Note [Undefined symbols in the RTS] for additional details. - - - - - e3fff751 by Sebastian Graf at 2023-01-09T20:40:02-05:00 Handle shadowing in DmdAnal (#22718) Previously, when we had a shadowing situation like ```hs f x = ... -- demand signature <1L><1L> main = ... \f -> f 1 ... ``` we'd happily use the shadowed demand signature at the call site inside the lambda. Of course, that's wrong and solution is simply to remove the demand signature from the `AnalEnv` when we enter the lambda. This patch does so for all binding constructs Core. In #22718 the issue was caused by LetUp not shadowing away the existing demand signature for the let binder in the let body. The resulting absent error is fickle to reproduce; hence no reproduction test case. #17478 would help. Fixes #22718. It appears that TcPlugin_Rewrite regresses by ~40% on Darwin. It is likely that DmdAnal was exploiting ill-scoped analysis results. Metric increase ['bytes allocated'] (test_env=x86_64-darwin-validate): TcPlugin_Rewrite - - - - - d53f6f4d by Oleg Grenrus at 2023-01-09T21:11:02-05:00 Add safe list indexing operator: !? With Joachim's amendments. Implements https://github.com/haskell/core-libraries-committee/issues/110 - - - - - cfaf1ad7 by Nicolas Trangez at 2023-01-09T21:11:03-05:00 rts, tests: limit thread name length to 15 bytes On Linux, `pthread_setname_np` (or rather, the kernel) only allows for thread names up to 16 bytes, including the terminating null byte. This commit adds a note pointing this out in `createOSThread`, and fixes up two instances where a thread name of more than 15 characters long was used (in the RTS, and in a test-case). Fixes: #22366 Fixes: https://gitlab.haskell.org/ghc/ghc/-/issues/22366 See: https://gitlab.haskell.org/ghc/ghc/-/issues/22366#note_460796 - - - - - 64286132 by Matthew Pickering at 2023-01-09T21:11:03-05:00 Store bootstrap_llvm_target and use it to set LlvmTarget in bindists This mirrors some existing logic for the bootstrap_target which influences how TargetPlatform is set. As described on #21970 not storing this led to `LlvmTarget` being set incorrectly and hence the wrong `--target` flag being passed to the C compiler. Towards #21970 - - - - - 4724e8d1 by Matthew Pickering at 2023-01-09T21:11:04-05:00 Check for FP_LD_NO_FIXUP_CHAINS in installation configure script Otherwise, when installing from a bindist the C flag isn't passed to the C compiler. This completes the fix for #22429 - - - - - 2e926b88 by Georgi Lyubenov at 2023-01-09T21:11:07-05:00 Fix outdated link to Happy section on sequences - - - - - 146a1458 by Matthew Pickering at 2023-01-09T21:11:07-05:00 Revert "NCG(x86): Compile add+shift as lea if possible." This reverts commit 20457d775885d6c3df020d204da9a7acfb3c2e5a. See #22666 and #21777 - - - - - 6e6adbe3 by Jade Lovelace at 2023-01-11T00:55:30-05:00 Fix tcPluginRewrite example - - - - - faa57138 by Jade Lovelace at 2023-01-11T00:55:31-05:00 fix missing haddock pipe - - - - - 0470ea7c by Florian Weimer at 2023-01-11T00:56:10-05:00 m4/fp_leading_underscore.m4: Avoid implicit exit function declaration And switch to a new-style function definition. Fixes build issues with compilers that do not accept implicit function declarations. - - - - - b2857df4 by HaskellMouse at 2023-01-11T00:56:52-05:00 Added a new warning about compatibility with RequiredTypeArguments This commit introduces a new warning that indicates code incompatible with future extension: RequiredTypeArguments. Enabling this extension may break some code and the warning will help to make it compatible in advance. - - - - - 5f17e21a by Ben Gamari at 2023-01-11T00:57:27-05:00 testsuite: Drop testheapalloced.c As noted in #22414, this file (which appears to be a benchmark for characterising the one-step allocator's MBlock cache) is currently unreferenced. Remove it. Closes #22414. - - - - - bc125775 by Vladislav Zavialov at 2023-01-11T00:58:03-05:00 Introduce the TypeAbstractions language flag GHC Proposals #448 "Modern scoped type variables" and #425 "Invisible binders in type declarations" introduce a new language extension flag: TypeAbstractions. Part of the functionality guarded by this flag has already been implemented, namely type abstractions in constructor patterns, but it was guarded by a combination of TypeApplications and ScopedTypeVariables instead of a dedicated language extension flag. This patch does the following: * introduces a new language extension flag TypeAbstractions * requires TypeAbstractions for @a-syntax in constructor patterns instead of TypeApplications and ScopedTypeVariables * creates a User's Guide page for TypeAbstractions and moves the "Type Applications in Patterns" section there To avoid a breaking change, the new flag is implied by ScopedTypeVariables and is retroactively added to GHC2021. Metric Decrease: MultiLayerModulesTH_OneShot - - - - - 083f7015 by Krzysztof Gogolewski at 2023-01-11T00:58:38-05:00 Misc cleanup - Remove unused mkWildEvBinder - Use typeTypeOrConstraint - more symmetric and asserts that that the type is Type or Constraint - Fix escape sequences in Python; they raise a deprecation warning with -Wdefault - - - - - aed1974e by Richard Eisenberg at 2023-01-11T08:30:42+00:00 Refactor the treatment of loopy superclass dicts This patch completely re-engineers how we deal with loopy superclass dictionaries in instance declarations. It fixes #20666 and #19690 The highlights are * Recognise that the loopy-superclass business should use precisely the Paterson conditions. This is much much nicer. See Note [Recursive superclasses] in GHC.Tc.TyCl.Instance * With that in mind, define "Paterson-smaller" in Note [Paterson conditions] in GHC.Tc.Validity, and the new data type `PatersonSize` in GHC.Tc.Utils.TcType, along with functions to compute and compare PatsonSizes * Use the new PatersonSize stuff when solving superclass constraints See Note [Solving superclass constraints] in GHC.Tc.TyCl.Instance * In GHC.Tc.Solver.Monad.lookupInInerts, add a missing call to prohibitedSuperClassSolve. This was the original cause of #20666. * Treat (TypeError "stuff") as having PatersonSize zero. See Note [Paterson size for type family applications] in GHC.Tc.Utils.TcType. * Treat the head of a Wanted quantified constraint in the same way as the superclass of an instance decl; this is what fixes #19690. See GHC.Tc.Solver.Canonical Note [Solving a Wanted forall-constraint] (Thanks to Matthew Craven for this insight.) This entailed refactoring the GivenSc constructor of CtOrigin a bit, to say whether it comes from an instance decl or quantified constraint. * Some refactoring way in which redundant constraints are reported; we don't want to complain about the extra, apparently-redundant constraints that we must add to an instance decl because of the loopy-superclass thing. I moved some work from GHC.Tc.Errors to GHC.Tc.Solver. * Add a new section to the user manual to describe the loopy superclass issue and what rules it follows. - - - - - 300bcc15 by HaskellMouse at 2023-01-11T13:43:36-05:00 Parse qualified terms in type signatures This commit allows qualified terms in type signatures to pass the parser and to be cathced by renamer with more informative error message. Adds a few tests. Fixes #21605 - - - - - 964284fc by Simon Peyton Jones at 2023-01-11T13:44:12-05:00 Fix void-arg-adding mechanism for worker/wrapper As #22725 shows, in worker/wrapper we must add the void argument /last/, not first. See GHC.Core.Opt.WorkWrap.Utils Note [Worker/wrapper needs to add void arg last]. That led me to to study GHC.Core.Opt.SpecConstr Note [SpecConstr needs to add void args first] which suggests the opposite! And indeed I think it's the other way round for SpecConstr -- or more precisely the void arg must precede the "extra_bndrs". That led me to some refactoring of GHC.Core.Opt.SpecConstr.calcSpecInfo. - - - - - f7ceafc9 by Krzysztof Gogolewski at 2023-01-11T22:36:59-05:00 Add 'docWithStyle' to improve codegen This new combinator docWithStyle :: IsOutput doc => doc -> (PprStyle -> SDoc) -> doc let us remove the need for code to be polymorphic in HDoc when not used in code style. Metric Decrease: ManyConstructors T13035 T1969 - - - - - b3be0d18 by Simon Peyton Jones at 2023-01-11T22:37:35-05:00 Fix finaliseArgBoxities for OPAQUE function We never do worker wrapper for OPAQUE functions, so we must zap the unboxing info during strictness analysis. This patch fixes #22502 - - - - - db11f358 by Ben Gamari at 2023-01-12T07:49:04-05:00 Revert "rts: Drop racy assertion" The logic here was inverted. Reverting the commit to avoid confusion when examining the commit history. This reverts commit b3eacd64fb36724ed6c5d2d24a81211a161abef1. - - - - - 3242139f by Ben Gamari at 2023-01-12T07:49:04-05:00 rts: Drop racy assertion 0e274c39bf836d5bb846f5fa08649c75f85326ac added an assertion in `dirty_MUT_VAR` checking that the MUT_VAR being dirtied was clean. However, this isn't necessarily the case since another thread may have raced us to dirty the object. - - - - - 9ffd5d57 by Ben Gamari at 2023-01-12T07:49:41-05:00 configure: Fix escaping of `$tooldir` In !9547 I introduced `$tooldir` directories into GHC's default link and compilation flags to ensure that our C toolchain finds its own headers and libraries before others on the system. However, the patch was subtly wrong in the escaping of `$tooldir`. Fix this. Fixes #22561. - - - - - 905d0b6e by Sebastian Graf at 2023-01-12T15:51:47-05:00 Fix contification with stable unfoldings (#22428) Many functions now return a `TailUsageDetails` that adorns a `UsageDetails` with a `JoinArity` that reflects the number of join point binders around the body for which the `UsageDetails` was computed. `TailUsageDetails` is now returned by `occAnalLamTail` as well as `occAnalUnfolding` and `occAnalRules`. I adjusted `Note [Join points and unfoldings/rules]` and `Note [Adjusting right-hand sides]` to account for the new machinery. I also wrote a new `Note [Join arity prediction based on joinRhsArity]` and refer to it when we combine `TailUsageDetails` for a recursive RHS. I also renamed * `occAnalLam` to `occAnalLamTail` * `adjustRhsUsage` to `adjustTailUsage` * a few other less important functions and properly documented the that each call of `occAnalLamTail` must pair up with `adjustTailUsage`. I removed `Note [Unfoldings and join points]` because it was redundant with `Note [Occurrences in stable unfoldings]`. While in town, I refactored `mkLoopBreakerNodes` so that it returns a condensed `NodeDetails` called `SimpleNodeDetails`. Fixes #22428. The refactoring seems to have quite beneficial effect on ghc/alloc performance: ``` CoOpt_Read(normal) ghc/alloc 784,778,420 768,091,176 -2.1% GOOD T12150(optasm) ghc/alloc 77,762,270 75,986,720 -2.3% GOOD T12425(optasm) ghc/alloc 85,740,186 84,641,712 -1.3% GOOD T13056(optasm) ghc/alloc 306,104,656 299,811,632 -2.1% GOOD T13253(normal) ghc/alloc 350,233,952 346,004,008 -1.2% T14683(normal) ghc/alloc 2,800,514,792 2,754,651,360 -1.6% T15304(normal) ghc/alloc 1,230,883,318 1,215,978,336 -1.2% T15630(normal) ghc/alloc 153,379,590 151,796,488 -1.0% T16577(normal) ghc/alloc 7,356,797,056 7,244,194,416 -1.5% T17516(normal) ghc/alloc 1,718,941,448 1,692,157,288 -1.6% T19695(normal) ghc/alloc 1,485,794,632 1,458,022,112 -1.9% T21839c(normal) ghc/alloc 437,562,314 431,295,896 -1.4% GOOD T21839r(normal) ghc/alloc 446,927,580 440,615,776 -1.4% GOOD geo. mean -0.6% minimum -2.4% maximum -0.0% ``` Metric Decrease: CoOpt_Read T10421 T12150 T12425 T13056 T18698a T18698b T21839c T21839r T9961 - - - - - a1491c87 by Andreas Klebinger at 2023-01-12T15:52:23-05:00 Only gc sparks locally when we can ensure marking is done. When performing GC without work stealing there was no guarantee that spark pruning was happening after marking of the sparks. This could cause us to GC live sparks under certain circumstances. Fixes #22528. - - - - - 8acfe930 by Cheng Shao at 2023-01-12T15:53:00-05:00 Change MSYSTEM to CLANG64 uniformly - - - - - 73bc162b by M Farkas-Dyck at 2023-01-12T15:53:42-05:00 Make `GHC.Tc.Errors.Reporter` take `NonEmpty ErrorItem` rather than `[ErrorItem]`, which lets us drop some panics. Also use the `BasicMismatch` constructor rather than `mkBasicMismatchMsg`, which lets us drop the "-Wno-incomplete-record-updates" flag. - - - - - 1b812b69 by Oleg Grenrus at 2023-01-12T15:54:21-05:00 Fix #22728: Not all diagnostics in safe check are fatal Also add tests for the issue and -Winferred-safe-imports in general - - - - - c79b2b65 by Matthew Pickering at 2023-01-12T15:54:58-05:00 Don't run hadrian-multi on fast-ci label Fixes #22667 - - - - - 9a3d6add by Andrew Lelechenko at 2023-01-13T00:46:36-05:00 Bump submodule bytestring to 0.11.4.0 Metric Decrease: T21839c T21839r - - - - - df33c13c by Ben Gamari at 2023-01-13T00:47:12-05:00 gitlab-ci: Bump Darwin bootstrap toolchain This updates the bootstrap compiler on Darwin from 8.10.7 to 9.2.5, ensuring that we have the fix for #21964. - - - - - 756a66ec by Ben Gamari at 2023-01-13T00:47:12-05:00 gitlab-ci: Pass -w to cabal update Due to cabal#8447, cabal-install 3.8.1.0 requires a compiler to run `cabal update`. - - - - - 1142f858 by Cheng Shao at 2023-01-13T11:04:00+00:00 Bump hsc2hs submodule - - - - - d4686729 by Cheng Shao at 2023-01-13T11:04:00+00:00 Bump process submodule - - - - - 84ae6573 by Cheng Shao at 2023-01-13T11:06:58+00:00 ci: Bump DOCKER_REV - - - - - d53598c5 by Cheng Shao at 2023-01-13T11:06:58+00:00 ci: enable xz parallel compression for x64 jobs - - - - - d31fcbca by Cheng Shao at 2023-01-13T11:06:58+00:00 ci: use in-image emsdk for js jobs - - - - - 93b9bbc1 by Cheng Shao at 2023-01-13T11:47:17+00:00 ci: improve nix-shell for gen_ci.hs and fix some ghc/hlint warnings - Add a ghc environment including prebuilt dependencies to the nix-shell. Get rid of the ad hoc cabal cache and all dependencies are now downloaded from the nixos binary cache. - Make gen_ci.hs a cabal package with HLS integration, to make future hacking of gen_ci.hs easier. - Fix some ghc/hlint warnings after I got HLS to work. - For the lint-ci-config job, do a shallow clone to save a few minutes of unnecessary git checkout time. - - - - - 8acc56c7 by Cheng Shao at 2023-01-13T11:47:17+00:00 ci: source the toolchain env file in wasm jobs - - - - - 87194df0 by Cheng Shao at 2023-01-13T11:47:17+00:00 ci: add wasm ci jobs via gen_ci.hs - There is one regular wasm job run in validate pipelines - Additionally, int-native/unreg wasm jobs run in nightly/release pipelines Also, remove the legacy handwritten wasm ci jobs in .gitlab-ci.yml. - - - - - b6eb9bcc by Matthew Pickering at 2023-01-13T11:52:16+00:00 wasm ci: Remove wasm release jobs This removes the wasm release jobs, as we do not yet intend to distribute these binaries. - - - - - 496607fd by Simon Peyton Jones at 2023-01-13T16:52:07-05:00 Add a missing checkEscapingKind Ticket #22743 pointed out that there is a missing check, for type-inferred bindings, that the inferred type doesn't have an escaping kind. The fix is easy. - - - - - 7a9a1042 by Andreas Klebinger at 2023-01-16T20:48:19-05:00 Separate core inlining logic from `Unfolding` type. This seems like a good idea either way, but is mostly motivated by a patch where this avoids a module loop. - - - - - 33b58f77 by sheaf at 2023-01-16T20:48:57-05:00 Hadrian: generalise &%> to avoid warnings This patch introduces a more general version of &%> that works with general traversable shapes, instead of lists. This allows us to pass along the information that the length of the list of filepaths passed to the function exactly matches the length of the input list of filepath patterns, avoiding pattern match warnings. Fixes #22430 - - - - - 8c7a991c by Andreas Klebinger at 2023-01-16T20:49:34-05:00 Add regression test for #22611. A case were a function used to fail to specialize, but now does. - - - - - 6abea760 by Andreas Klebinger at 2023-01-16T20:50:10-05:00 Mark maximumBy/minimumBy as INLINE. The RHS was too large to inline which often prevented the overhead of the Maybe from being optimized away. By marking it as INLINE we can eliminate the overhead of both the maybe and are able to unpack the accumulator when possible. Fixes #22609 - - - - - 99d151bb by Matthew Pickering at 2023-01-16T20:50:50-05:00 ci: Bump CACHE_REV so that ghc-9.6 branch and HEAD have different caches Having the same CACHE_REV on both branches leads to issues where the darwin toolchain is different on ghc-9.6 and HEAD which leads to long darwin build times. In general we should ensure that each branch has a different CACHE_REV. - - - - - 6a5845fb by Matthew Pickering at 2023-01-16T20:51:25-05:00 ci: Change owner of files in source-tarball job This fixes errors of the form: ``` fatal: detected dubious ownership in repository at '/builds/ghc/ghc' To add an exception for this directory, call: git config --global --add safe.directory /builds/ghc/ghc inferred 9.7.20230113 checking for GHC Git commit id... fatal: detected dubious ownership in repository at '/builds/ghc/ghc' To add an exception for this directory, call: git config --global --add safe.directory /builds/ghc/ghc ``` - - - - - 4afb952c by Matthew Pickering at 2023-01-16T20:51:25-05:00 ci: Don't build aarch64-deb10-llvm job on release pipelines Closes #22721 - - - - - 8039feb9 by Matthew Pickering at 2023-01-16T20:51:25-05:00 ci: Change owner of files in test-bootstrap job - - - - - 0b358d0c by Matthew Pickering at 2023-01-16T20:51:25-05:00 rel_eng: Add release engineering scripts into ghc tree It is better to keep these scripts in the tree as they depend on the CI configuration and so on. By keeping them in tree we can keep them up-to-date as the CI config changes and also makes it easier to backport changes to the release script between release branches in future. The final motivation is that it makes generating GHCUp metadata possible. - - - - - 28cb2ed0 by Matthew Pickering at 2023-01-16T20:51:25-05:00 ci: Don't use complicated image or clone in not-interruptible job This job exists only for the meta-reason of not allowing nightly pipelines to be cancelled. It was taking two minutes to run as in order to run "true" we would also clone the whole GHC repo. - - - - - eeea59bb by Matthew Pickering at 2023-01-16T20:51:26-05:00 Add scripts to generate ghcup metadata on nightly and release pipelines 1. A python script in .gitlab/rel_eng/mk-ghcup-metadata which generates suitable metadata for consumption by GHCUp for the relevant pipelines. - The script generates the metadata just as the ghcup maintainers want, without taking into account platform/library combinations. It is updated manually when the mapping changes. - The script downloads the bindists which ghcup wants to distribute, calculates the hash and generates the yaml in the correct structure. - The script is documented in the .gitlab/rel_eng/mk-ghcup-metadata/README.mk file 1a. The script requires us to understand the mapping from platform -> job. To choose the preferred bindist for each platform the .gitlab/gen_ci.hs script is modified to allow outputting a metadata file which answers the question about which job produces the bindist which we want to distribute to users for a specific platform. 2. Pipelines to run on nightly and release jobs to generate metadata - ghcup-metadata-nightly: Generates metadata which points directly to artifacts in the nightly job. - ghcup-metadata-release: Generates metadata suitable for inclusion directly in ghcup by pointing to the downloads folder where the bindist will be uploaded to. 2a. Trigger jobs which test the generated metadata in the downstream `ghccup-ci` repo. See that repo for documentation about what is tested and how but essentially we test in a variety of clean images that ghcup can download and install the bindists we say exist in our metadata. - - - - - 97bd4d8c by Andrew Lelechenko at 2023-01-16T20:52:04-05:00 Bump submodule parsec to 3.1.16.1 - - - - - 97ac8230 by Alan Zimmerman at 2023-01-16T20:52:39-05:00 EPA: Add annotation for 'type' in DataDecl Closes #22765 - - - - - dbbab95d by Ben Gamari at 2023-01-17T06:36:06-05:00 compiler: Small optimisation of assertM In #22739 @AndreasK noticed that assertM performed the action to compute the asserted predicate regardless of whether DEBUG is enabled. This is inconsistent with the other assertion operations and general convention. Fix this. Closes #22739. - - - - - fc02f3bb by Viktor Dukhovni at 2023-01-17T06:36:47-05:00 Avoid unnecessary printf warnings in EventLog.c Fixes #22778 - - - - - 003b6d44 by Simon Peyton Jones at 2023-01-17T16:33:05-05:00 Document the semantics of pattern bindings a bit better This MR is in response to the discussion on #22719 - - - - - f4d50baf by Vladislav Zavialov at 2023-01-17T16:33:41-05:00 Hadrian: fix warnings (#22783) This change fixes the following warnings when building Hadrian: src/Hadrian/Expression.hs:38:10: warning: [-Wredundant-constraints] src/Hadrian/Expression.hs:84:13: warning: [-Wtype-equality-requires-operators] src/Hadrian/Expression.hs:84:21: warning: [-Wtype-equality-requires-operators] src/Hadrian/Haskell/Cabal/Parse.hs:67:1: warning: [-Wunused-imports] - - - - - 06036d93 by Sylvain Henry at 2023-01-18T01:55:10-05:00 testsuite: req_smp --> req_target_smp, req_ghc_smp See #22630 and !9552 This commit: - splits req_smp into req_target_smp and req_ghc_smp - changes the testsuite driver to calculate req_ghc_smp - changes a handful of tests to use req_target_smp instead of req_smp - changes a handful of tests to use req_host_smp when needed The problem: - the problem this solves is the ambiguity surrounding req_smp - on master req_smp was used to express the constraint that the program being compiled supports smp _and_ that the host RTS (i.e., the RTS used to compile the program) supported smp. Normally that is fine, but in cross compilation this is not always the case as was discovered in #22630. The solution: - Differentiate the two constraints: - use req_target_smp to say the RTS the compiled program is linked with (and the platform) supports smp - use req_host_smp to say the RTS the host is linked with supports smp WIP: fix req_smp (target vs ghc) add flag to separate bootstrapper split req_smp -> req_target_smp and req_ghc_smp update tests smp flags cleanup and add some docstrings only set ghc_with_smp to bootstrapper on S1 or CC Only set ghc_with_smp to bootstrapperWithSMP of when testing stage 1 and cross compiling test the RTS in config/ghc not hadrian re-add ghc_with_smp fix and align req names fix T11760 to use req_host_smp test the rts directly, avoid python 3.5 limitation test the compiler in a try block align out of tree and in tree withSMP flags mark failing tests as host req smp testsuite: req_host_smp --> req_ghc_smp Fix ghc vs host, fix ghc_with_smp leftover - - - - - ee9b78aa by Krzysztof Gogolewski at 2023-01-18T01:55:45-05:00 Use -Wdefault when running Python testdriver (#22727) - - - - - e9c0537c by Vladislav Zavialov at 2023-01-18T01:56:22-05:00 Enable -Wstar-is-type by default (#22759) Following the plan in GHC Proposal #143 "Remove the * kind syntax", which states: In the next release (or 3 years in), enable -fwarn-star-is-type by default. The "next release" happens to be 9.6.1 I also moved the T21583 test case from should_fail to should_compile, because the only reason it was failing was -Werror=compat in our test suite configuration. - - - - - 4efee43d by Ryan Scott at 2023-01-18T01:56:59-05:00 Add missing parenthesizeHsType in cvtSigTypeKind We need to ensure that the output of `cvtSigTypeKind` is parenthesized (at precedence `sigPrec`) so that any type signatures with an outermost, explicit kind signature can parse correctly. Fixes #22784. - - - - - f891a442 by Ben Gamari at 2023-01-18T07:28:00-05:00 Bump ghc-tarballs to fix #22497 It turns out that gmp 6.2.1 uses the platform-reserved `x18` register on AArch64/Darwin. This was fixed in upstream changeset 18164:5f32dbc41afc, which was merged in 2020. Here I backport this patch although I do hope that a new release is forthcoming soon. Bumps gmp-tarballs submodule. Fixes #22497. - - - - - b13c6ea5 by Ben Gamari at 2023-01-18T07:28:00-05:00 Bump gmp-tarballs submodule This backports the upstream fix for CVE-2021-43618, fixing #22789. - - - - - c45a5fff by Cheng Shao at 2023-01-18T07:28:37-05:00 Fix typo in recent darwin tests fix Corrects a typo in !9647. Otherwise T18623 will still fail on darwin and stall other people's work. - - - - - b4c14c4b by Luite Stegeman at 2023-01-18T14:21:42-05:00 Add PrimCallConv support to GHCi This adds support for calling Cmm code from bytecode using the native calling convention, allowing modules that use `foreign import prim` to be loaded and debugged in GHCi. This patch introduces a new `PRIMCALL` bytecode instruction and a helper stack frame `stg_primcall`. The code is based on the existing functionality for dealing with unboxed tuples in bytecode, which has been generalised to handle arbitrary calls. Fixes #22051 - - - - - d0a63ef8 by Adam Gundry at 2023-01-18T14:22:26-05:00 Refactor warning flag parsing to add missing flags This adds `-Werror=<group>` and `-fwarn-<group>` flags for warning groups as well as individual warnings. Previously these were defined on an ad hoc basis so for example we had `-Werror=compat` but not `-Werror=unused-binds`, whereas we had `-fwarn-unused-binds` but not `-fwarn-compat`. Fixes #22182. - - - - - 7ed1b8ef by Adam Gundry at 2023-01-18T14:22:26-05:00 Minor corrections to comments - - - - - 5389681e by Adam Gundry at 2023-01-18T14:22:26-05:00 Revise warnings documentation in user's guide - - - - - ab0d5cda by Adam Gundry at 2023-01-18T14:22:26-05:00 Move documentation of deferred type error flags out of warnings section - - - - - eb5a6b91 by John Ericson at 2023-01-18T22:24:10-05:00 Give the RTS it's own configure script Currently it doesn't do much anything, we are just trying to introduce it without breaking the build. Later, we will move functionality from the top-level configure script over to it. We need to bump Cabal for https://github.com/haskell/cabal/pull/8649; to facilitate and existing hack of skipping some configure checks for the RTS we now need to skip just *part* not *all* of the "post configure" hook, as running the configure script (which we definitely want to do) is also implemented as part of the "post configure" hook. But doing this requires exposing functionality that wasn't exposed before. - - - - - 32ab07bf by Andrew Lelechenko at 2023-01-18T22:24:51-05:00 ghc package does not have to depend on terminfo - - - - - 981ff7c4 by Andrew Lelechenko at 2023-01-18T22:24:51-05:00 ghc-pkg does not have to depend on terminfo - - - - - f058e367 by Ben Gamari at 2023-01-18T22:25:27-05:00 nativeGen/X86: MFENCE is unnecessary for release semantics In #22764 a user noticed that a program implementing a simple atomic counter via an STRef regressed significantly due to the introduction of necessary atomic operations in the MutVar# primops (#22468). This regression was caused by a bug in the NCG, which emitted an unnecessary MFENCE instruction for a release-ordered atomic write. MFENCE is rather only needed to achieve sequentially consistent ordering. Fixes #22764. - - - - - 154889db by Ryan Scott at 2023-01-18T22:26:03-05:00 Add regression test for #22151 Issue #22151 was coincidentally fixed in commit aed1974e92366ab8e117734f308505684f70cddf (`Refactor the treatment of loopy superclass dicts`). This adds a regression test to ensure that the issue remains fixed. Fixes #22151. - - - - - 14b5982a by Andrei Borzenkov at 2023-01-18T22:26:43-05:00 Fix printing of promoted MkSolo datacon (#22785) Problem: In 2463df2f, the Solo data constructor was renamed to MkSolo, and Solo was turned into a pattern synonym for backwards compatibility. Since pattern synonyms can not be promoted, the old code that pretty-printed promoted single-element tuples started producing ill-typed code: t :: Proxy ('Solo Int) This fails with "Pattern synonym ‘Solo’ used as a type" The solution is to track the distinction between type constructors and data constructors more carefully when printing single-element tuples. - - - - - 1fe806d3 by Cheng Shao at 2023-01-23T04:48:47-05:00 hadrian: add hi_core flavour transformer The hi_core flavour transformer enables -fwrite-if-simplified-core for stage1 libraries, which emit core into interface files to make it possible to restart code generation. Building boot libs with it makes it easier to use GHC API to prototype experimental backends that needs core/stg at link time. - - - - - 317cad26 by Cheng Shao at 2023-01-23T04:48:47-05:00 hadrian: add missing docs for recently added flavour transformers - - - - - 658f4446 by Ben Gamari at 2023-01-23T04:49:23-05:00 gitlab-ci: Add Rocky8 jobs Addresses #22268. - - - - - a83ec778 by Vladislav Zavialov at 2023-01-23T04:49:58-05:00 Set "since: 9.8" for TypeAbstractions and -Wterm-variable-capture These flags did not make it into the 9.6 release series, so the "since" annotations must be corrected. - - - - - fec7c2ea by Alan Zimmerman at 2023-01-23T04:50:33-05:00 EPA: Add SourceText to HsOverLabel To be able to capture string literals with possible escape codes as labels. Close #22771 - - - - - 3efd1e99 by Ben Gamari at 2023-01-23T04:51:08-05:00 template-haskell: Bump version to 2.20.0.0 Updates `text` and `exceptions` submodules for bounds bumps. Addresses #22767. - - - - - 0900b584 by Cheng Shao at 2023-01-23T04:51:45-05:00 hadrian: disable alloca for in-tree GMP on wasm32 When building in-tree GMP for wasm32, disable its alloca usage, since it may potentially cause stack overflow (e.g. #22602). - - - - - db0f1bfd by Cheng Shao at 2023-01-23T04:52:21-05:00 Bump process submodule Includes a critical fix for wasm32, see https://github.com/haskell/process/pull/272 for details. Also changes the existing cross test to include process stuff and avoid future regression here. - - - - - 9222b167 by Matthew Pickering at 2023-01-23T04:52:57-05:00 ghcup metadata: Fix subdir for windows bindist - - - - - 9a9bec57 by Matthew Pickering at 2023-01-23T04:52:57-05:00 ghcup metadata: Remove viPostRemove field from generated metadata This has been removed from the downstream metadata. - - - - - 82884ce0 by Simon Peyton Jones at 2023-01-23T04:53:32-05:00 Fix #22742 runtimeRepLevity_maybe was panicing unnecessarily; and the error printing code made use of the case when it should return Nothing rather than panicing. For some bizarre reason perf/compiler/T21839r shows a 10% bump in runtime peak-megagbytes-used, on a single architecture (alpine). See !9753 for commentary, but I'm going to accept it. Metric Increase: T21839r - - - - - 2c6deb18 by Bryan Richter at 2023-01-23T14:12:22+02:00 codeowners: Add Ben, Matt, and Bryan to CI - - - - - eee3bf05 by Matthew Craven at 2023-01-23T21:46:41-05:00 Do not collect compile-time metrics for T21839r ...the testsuite doesn't handle this properly since it also collects run-time metrics. Compile-time metrics for this test are already tracked via T21839c. Metric Decrease: T21839r - - - - - 1d1dd3fb by Matthew Pickering at 2023-01-24T05:37:52-05:00 Fix recompilation checking for multiple home units The key part of this change is to store a UnitId in the `UsageHomeModule` and `UsageHomeModuleInterface`. * Fine-grained dependency tracking is used if the dependency comes from any home unit. * We actually look up the right module when checking whether we need to recompile in the `UsageHomeModuleInterface` case. These scenarios are both checked by the new tests ( multipleHomeUnits_recomp and multipleHomeUnits_recomp_th ) Fixes #22675 - - - - - 7bfb30f9 by Matthew Pickering at 2023-01-24T05:37:52-05:00 Augment target filepath by working directory when checking if module satisfies target This fixes a spurious warning in -Wmissing-home-modules. This is a simple oversight where when looking for the target in the first place we augment the search by the -working-directory flag but then fail to do so when checking this warning. Fixes #22676 - - - - - 69500dd4 by Matthew Pickering at 2023-01-24T05:37:52-05:00 Use NodeKey rather than ModuleName in pruneCache The `pruneCache` function assumes that the list of `CachedInfo` all have unique `ModuleName`, this is not true: * In normal compilation, the same module name can appear for a file and it's boot file. * In multiple home unit compilation the same ModuleName can appear in different units The fix is to use a `NodeKey` as the actual key for the interfaces which includes `ModuleName`, `IsBoot` and `UnitId`. Fixes #22677 - - - - - 336b2b1c by Matthew Pickering at 2023-01-24T05:37:52-05:00 Recompilation checking: Don't try to find artefacts for Interactive & hs-boot combo In interactive mode we don't produce any linkables for hs-boot files. So we also need to not going looking for them when we check to see if we have all the right objects needed for recompilation. Ticket #22669 - - - - - 6469fea7 by Matthew Pickering at 2023-01-24T05:37:52-05:00 Don't write o-boot files in Interactive mode We should not be producing object files when in interactive mode but we still produced the dummy o-boot files. These never made it into a `Linkable` but then confused the recompilation checker. Fixes #22669 - - - - - 06cc0a95 by Matthew Pickering at 2023-01-24T05:37:52-05:00 Improve driver diagnostic messages by including UnitId in message Currently the driver diagnostics don't give any indication about which unit they correspond to. For example `-Wmissing-home-modules` can fire multiple times for each different home unit and gives no indication about which unit it's actually reporting about. Perhaps a longer term fix is to generalise the providence information away from a SrcSpan so that these kind of whole project errors can be reported with an accurate provenance. For now we can just include the `UnitId` in the error message. Fixes #22678 - - - - - 4fe9eaff by Matthew Pickering at 2023-01-24T05:37:52-05:00 Key ModSummary cache by UnitId as well as FilePath Multiple units can refer to the same files without any problem. Just another assumption which needs to be updated when we may have multiple home units. However, there is the invariant that within each unit each file only maps to one module, so as long as we also key the cache by UnitId then we are all good. This led to some confusing behaviour in GHCi when reloading, multipleHomeUnits_shared distils the essence of what can go wrong. Fixes #22679 - - - - - ada29f5c by Matthew Pickering at 2023-01-24T05:37:52-05:00 Finder: Look in current unit before looking in any home package dependencies In order to preserve existing behaviour it's important to look within the current component before consideirng a module might come from an external component. This already happened by accident in `downsweep`, (because roots are used to repopulated the cache) but in the `Finder` the logic was the wrong way around. Fixes #22680 ------------------------- Metric Decrease: MultiComponentModules MultiComponentModulesRecomp -------------------------p - - - - - be701cc6 by Matthew Pickering at 2023-01-24T05:37:52-05:00 Debug: Print full NodeKey when pretty printing ModuleGraphNode This is helpful when debugging multiple component issues. - - - - - 34d2d463 by Krzysztof Gogolewski at 2023-01-24T05:38:32-05:00 Fix Lint check for duplicate external names Lint was checking for duplicate external names by calling removeDups, which needs a comparison function that is passed to Data.List.sortBy. But the comparison was not a valid ordering - it returned LT if one of the names was not external. For example, the previous implementation won't find a duplicate in [M.x, y, M.x]. Instead, we filter out non-external names before looking for duplicates. - - - - - 1c050ed2 by Matthew Pickering at 2023-01-24T05:39:08-05:00 Add test for T22671 This was fixed by b13c6ea5 Closes #22671 - - - - - 05e6a2d9 by Tom Ellis at 2023-01-24T12:10:52-05:00 Clarify where `f` is defined - - - - - d151546e by Cheng Shao at 2023-01-24T12:11:29-05:00 CmmToC: fix CmmRegOff for 64-bit register on a 32-bit target We used to print the offset value to a platform word sized integer. This is incorrect when the offset is negative (e.g. output of cmm constant folding) and the register is 64-bit but on a 32-bit target, and may lead to incorrect runtime result (e.g. #22607). The fix is simple: just treat it as a proper MO_Add, with the correct width info inferred from the register itself. Metric Increase: T12707 T13379 T4801 T5321FD T5321Fun - - - - - e5383a29 by Wander Hillen at 2023-01-24T20:02:26-05:00 Allow waiting for timerfd to be interrupted during rts shutdown - - - - - 1957eda1 by Ryan Scott at 2023-01-24T20:03:01-05:00 Restore Compose's Read/Show behavior to match Read1/Show1 instances Fixes #22816. - - - - - 30972827 by Matthew Pickering at 2023-01-25T03:54:14-05:00 docs: Update INSTALL.md Removes references to make. Fixes #22480 - - - - - bc038c3b by Cheng Shao at 2023-01-25T03:54:50-05:00 compiler: fix handling of MO_F_Neg in wasm NCG In the wasm NCG, we used to compile MO_F_Neg to 0.0-x. It was an oversight, there actually exists f32.neg/f64.neg opcodes in the wasm spec and those should be used instead! The old behavior almost works, expect when GHC compiles the -0.0 literal, which will incorrectly become 0.0. - - - - - e987e345 by Sylvain Henry at 2023-01-25T14:47:41-05:00 Hadrian: correctly detect AR at-file support Stage0's ar may not support at-files. Take it into account. Found while cross-compiling from Darwin to Windows. - - - - - 48131ee2 by Sylvain Henry at 2023-01-25T14:47:41-05:00 Hadrian: fix Windows cross-compilation Decision to build either unix or Win32 package must be stage specific for cross-compilation to be supported. - - - - - 288fa017 by Sylvain Henry at 2023-01-25T14:47:41-05:00 Fix RTS build on Windows This change fixes a cross-compilation issue from ArchLinux to Windows because these symbols weren't found. - - - - - 2fdf22ae by Sylvain Henry at 2023-01-25T14:47:41-05:00 configure: support "windows" as an OS - - - - - 13a0566b by Simon Peyton Jones at 2023-01-25T14:48:16-05:00 Fix in-scope set in specImports Nothing deep here; I had failed to bring some floated dictionary binders into scope. Exposed by -fspecialise-aggressively Fixes #22715. - - - - - b7efdb24 by Matthew Pickering at 2023-01-25T14:48:51-05:00 ci: Disable HLint job due to excessive runtime The HLint jobs takes much longer to run (20 minutes) after "Give the RTS it's own configure script" eb5a6b91 Now the CI job will build the stage0 compiler before it generates the necessary RTS headers. We either need to: * Fix the linting rules so they take much less time * Revert the commit * Remove the linting of base from the hlint job * Remove the hlint job This is highest priority as it is affecting all CI pipelines. For now I am just disabling the job because there are many more pressing matters at hand. Ticket #22830 - - - - - 1bd32a35 by Sylvain Henry at 2023-01-26T12:34:21-05:00 Factorize hptModulesBelow Create and use moduleGraphModulesBelow in GHC.Unit.Module.Graph that doesn't need anything from the driver to be used. - - - - - 1262d3f8 by Matthew Pickering at 2023-01-26T12:34:56-05:00 Store dehydrated data structures in CgModBreaks This fixes a tricky leak in GHCi where we were retaining old copies of HscEnvs when reloading. If not all modules were recompiled then these hydrated fields in break points would retain a reference to the old HscEnv which could double memory usage. Fixes #22530 - - - - - e27eb80c by Matthew Pickering at 2023-01-26T12:34:56-05:00 Force more in NFData Name instance Doesn't force the lazy `OccName` field (#19619) which is already known as a really bad source of leaks. When we slam the hammer storing Names on disk (in interface files or the like), all this should be forced as otherwise a `Name` can easily retain an `Id` and hence the entire world. Fixes #22833 - - - - - 3d004d5a by Matthew Pickering at 2023-01-26T12:34:56-05:00 Force OccName in tidyTopName This occname has just been derived from an `Id`, so need to force it promptly so we can release the Id back to the world. Another symptom of the bug caused by #19619 - - - - - f2a0fea0 by Matthew Pickering at 2023-01-26T12:34:56-05:00 Strict fields in ModNodeKey (otherwise retains HomeModInfo) Towards #22530 - - - - - 5640cb1d by Sylvain Henry at 2023-01-26T12:35:36-05:00 Hadrian: fix doc generation Was missing dependencies on files generated by templates (e.g. ghc.cabal) - - - - - 3e827c3f by Richard Eisenberg at 2023-01-26T20:06:53-05:00 Do newtype unwrapping in the canonicaliser and rewriter See Note [Unwrap newtypes first], which has the details. Close #22519. - - - - - b3ef5c89 by doyougnu at 2023-01-26T20:07:48-05:00 tryFillBuffer: strictify more speculative bangs - - - - - d0d7ba0f by Vladislav Zavialov at 2023-01-26T20:08:25-05:00 base: NoImplicitPrelude in Data.Void and Data.Kind This change removes an unnecessary dependency on Prelude from two modules in the base package. - - - - - fa1db923 by Matthew Pickering at 2023-01-26T20:09:00-05:00 ci: Add ubuntu18_04 nightly and release jobs This adds release jobs for ubuntu18_04 which uses glibc 2.27 which is older than the 2.28 which is used by Rocky8 bindists. Ticket #22268 - - - - - 807310a1 by Matthew Pickering at 2023-01-26T20:09:00-05:00 rel-eng: Add missing rocky8 bindist We intend to release rocky8 bindist so the fetching script needs to know about them. - - - - - c7116b10 by Ben Gamari at 2023-01-26T20:09:35-05:00 base: Make changelog proposal references more consistent Addresses #22773. - - - - - 6932cfc7 by Sylvain Henry at 2023-01-26T20:10:27-05:00 Fix spurious change from !9568 - - - - - e480fbc2 by Ben Gamari at 2023-01-27T05:01:24-05:00 rts: Use C11-compliant static assertion syntax Previously we used `static_assert` which is only available in C23. By contrast, C11 only provides `_Static_assert`. Fixes #22777 - - - - - 2648c09c by Andrei Borzenkov at 2023-01-27T05:02:07-05:00 Replace errors from badOrigBinding with new one (#22839) Problem: in 02279a9c the type-level [] syntax was changed from a built-in name to an alias for the GHC.Types.List constructor. badOrigBinding assumes that if a name is not built-in then it must have come from TH quotation, but this is not necessarily the case with []. The outdated assumption in badOrigBinding leads to incorrect error messages. This code: data [] Fails with "Cannot redefine a Name retrieved by a Template Haskell quote: []" Unfortunately, there is not enough information in RdrName to directly determine if the name was constructed via TH or by the parser, so this patch changes the error message instead. It unifies TcRnIllegalBindingOfBuiltIn and TcRnNameByTemplateHaskellQuote into a new error TcRnBindingOfExistingName and changes its wording to avoid guessing the origin of the name. - - - - - 545bf8cf by Matthew Pickering at 2023-01-27T14:58:53+00:00 Revert "base: NoImplicitPrelude in Data.Void and Data.Kind" Fixes CI errors of the form. ``` ===> Command failed with error code: 1 ghc: panic! (the 'impossible' happened) GHC version 9.7.20230127: lookupGlobal Failed to load interface for ‘GHC.Num.BigNat’ There are files missing in the ‘ghc-bignum’ package, try running 'ghc-pkg check'. Use -v (or `:set -v` in ghci) to see a list of the files searched for. Call stack: CallStack (from HasCallStack): callStackDoc, called at compiler/GHC/Utils/Panic.hs:189:37 in ghc:GHC.Utils.Panic pprPanic, called at compiler/GHC/Tc/Utils/Env.hs:154:32 in ghc:GHC.Tc.Utils.Env CallStack (from HasCallStack): panic, called at compiler/GHC/Utils/Error.hs:454:29 in ghc:GHC.Utils.Error Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug ``` This reverts commit d0d7ba0fb053ebe7f919a5932066fbc776301ccd. The module now lacks a dependency on GHC.Num.BigNat which it implicitly depends on. It is causing all CI jobs to fail so we revert without haste whilst the patch can be fixed. Fixes #22848 - - - - - 638277ba by Simon Peyton Jones at 2023-01-27T23:54:55-05:00 Detect family instance orphans correctly We were treating a type-family instance as a non-orphan if there was a type constructor on its /right-hand side/ that was local. Boo! Utterly wrong. With this patch, we correctly check the /left-hand side/ instead! Fixes #22717 - - - - - 46a53bb2 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00 Report family instance orphans correctly This fixes the fact that we were not reporting orphan family instances at all. The fix here is easy, but touches a bit of code. I refactored the code to be much more similar to the way that class instances are done: - Add a fi_orphan field to FamInst, like the is_orphan field in ClsInst - Make newFamInst initialise this field, just like newClsInst - And make newFamInst report a warning for an orphan, just like newClsInst - I moved newFamInst from GHC.Tc.Instance.Family to GHC.Tc.Utils.Instantiate, just like newClsInst. - I added mkLocalFamInst to FamInstEnv, just like mkLocalClsInst in InstEnv - TcRnOrphanInstance and SuggestFixOrphanInstance are now parametrised over class instances vs type/data family instances. Fixes #19773 - - - - - faa300fb by Simon Peyton Jones at 2023-01-27T23:54:55-05:00 Avoid orphans in STG This patch removes some orphan instances in the STG namespace by introducing the GHC.Stg.Lift.Types module, which allows various type family instances to be moved to GHC.Stg.Syntax, avoiding orphan instances. - - - - - 0f25a13b by Simon Peyton Jones at 2023-01-27T23:54:55-05:00 Avoid orphans in the parser This moves Anno instances for PatBuilder from GHC.Parser.PostProcess to GHC.Parser.Types to avoid orphans. - - - - - 15750d33 by Simon Peyton Jones at 2023-01-27T23:54:55-05:00 Accept an orphan declaration (sadly) This accepts the orphan type family instance type instance DsForeignHook = ... in GHC.HsToCore.Types. See Note [The Decoupling Abstract Data Hack] in GHC.Driver.Hooks - - - - - c9967d13 by Zubin Duggal at 2023-01-27T23:55:31-05:00 bindist configure: Fail if find not found (#22691) - - - - - ad8cfed4 by John Ericson at 2023-01-27T23:56:06-05:00 Put hadrian bootstrap plans through `jq` This makes it possible to review changes with conventional diffing tools. - - - - - d0ddc01b by Ben Gamari at 2023-01-27T23:56:42-05:00 testsuite: Introduce threaded2_sanity way Incredibly, we previously did not have a single way which would test the threaded RTS with multiple capabilities and the sanity-checker enabled. - - - - - 38ad8351 by Ben Gamari at 2023-01-27T23:56:42-05:00 rts: Relax Messages assertion `doneWithMsgThrowTo` was previously too strict in asserting that the `Message` is locked. Specifically, it failed to consider that the `Message` may not be locked if we are deleting all threads during RTS shutdown. - - - - - a9fe81af by Ben Gamari at 2023-01-27T23:56:42-05:00 testsuite: Fix race in UnliftedTVar2 Previously UnliftedTVar2 would fail when run with multiple capabilities (and possibly even with one capability) as it would assume that `killThread#` would immediately kill the "increment" thread. Also, refactor the the executable to now succeed with no output and fails with an exit code. - - - - - 8519af60 by Ben Gamari at 2023-01-27T23:56:42-05:00 testsuite: Make listThreads more robust Previously it was sensitive to the labels of threads which it did not create (e.g. the IO manager event loop threads). Fix this. - - - - - 55a81995 by Ben Gamari at 2023-01-27T23:56:43-05:00 rts: Fix non-atomic mutation of enabled_capabilities - - - - - b5c75f1d by Ben Gamari at 2023-01-27T23:56:43-05:00 rts: Fix C++ compilation issues Make the RTS compilable with a C++ compiler by inserting necessary casts. - - - - - c261b62f by Ben Gamari at 2023-01-27T23:56:43-05:00 rts: Fix typo "tracingAddCapabilities" was mis-named - - - - - 77fdbd3f by Ben Gamari at 2023-01-27T23:56:43-05:00 rts: Drop long-dead fallback definitions for INFINITY & NAN These are no longer necessary since we now compile as C99. - - - - - 56c1bd98 by Ben Gamari at 2023-01-28T02:57:59-05:00 Revert "CApiFFI: add ConstPtr for encoding const-qualified pointer return types (#22043)" This reverts commit 99aca26b652603bc62953157a48e419f737d352d. - - - - - b3a3534b by nineonine at 2023-01-28T02:57:59-05:00 CApiFFI: add ConstPtr for encoding const-qualified pointer return types Previously, when using `capi` calling convention in foreign declarations, code generator failed to handle const-cualified pointer return types. This resulted in CC toolchain throwing `-Wincompatible-pointer-types-discards-qualifiers` warning. `Foreign.C.Types.ConstPtr` newtype was introduced to handle these cases - special treatment was put in place to generate appropritetly qualified C wrapper that no longer triggers the above mentioned warning. Fixes #22043. - - - - - 082b7d43 by Oleg Grenrus at 2023-01-28T02:58:38-05:00 Add Foldable1 Solo instance - - - - - 50b1e2e8 by Andrei Borzenkov at 2023-01-28T02:59:18-05:00 Convert diagnostics in GHC.Rename.Bind to proper TcRnMessage (#20115) I removed all occurrences of TcRnUnknownMessage in GHC.Rename.Bind module. Instead, these TcRnMessage messages were introduced: TcRnMultipleFixityDecls TcRnIllegalPatternSynonymDecl TcRnIllegalClassBiding TcRnOrphanCompletePragma TcRnEmptyCase TcRnNonStdGuards TcRnDuplicateSigDecl TcRnMisplacedSigDecl TcRnUnexpectedDefaultSig TcRnBindInBootFile TcRnDuplicateMinimalSig - - - - - 3330b819 by Matthew Pickering at 2023-01-28T02:59:54-05:00 hadrian: Fix library-dirs, dynamic-library-dirs and static-library-dirs in inplace .conf files Previously we were just throwing away the contents of the library-dirs fields but really we have to do the same thing as for include-dirs, relativise the paths into the current working directory and maintain any extra libraries the user has specified. Now the relevant section of the rts.conf file looks like: ``` library-dirs: ${pkgroot}/../rts/build ${pkgroot}/../../..//_build/stage1/rts/build /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib library-dirs-static: ${pkgroot}/../rts/build ${pkgroot}/../../..//_build/stage1/rts/build /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib dynamic-library-dirs: ${pkgroot}/../rts/build ${pkgroot}/../../..//_build/stage1/rts/build /nix/store/av4c0fib4rkmb6sa1074z0rb1ciria5b-gperftools-2.10/lib /nix/store/2infxahfp9lj084xn3q9ib5ajks8447i-libffi-3.4.4/lib ``` Fixes #22209 - - - - - c9ad8852 by Andrew Lelechenko at 2023-01-28T03:00:33-05:00 Document differences between Data.{Monoid,Semigroup}.{First,Last} - - - - - 7e11c6dc by Cheng Shao at 2023-01-28T03:01:09-05:00 compiler: fix subword literal narrowing logic in the wasm NCG This patch fixes the W8/W16 literal narrowing logic in the wasm NCG, which used to lower it to something like i32.const -1, without properly zeroing-out the unused higher bits. Fixes #22608. - - - - - 6ea2aa02 by Cheng Shao at 2023-01-28T03:01:46-05:00 compiler: fix lowering of CmmBlock in the wasm NCG The CmmBlock datacon was not handled in lower_CmmLit, since I thought it would have been eliminated after proc-point splitting. Turns out it still occurs in very rare occasions, and this patch is needed to fix T9329 for wasm. - - - - - 2b62739d by Andrew Lelechenko at 2023-01-28T17:16:11-05:00 Assorted changes to avoid Data.List.{head,tail} - - - - - 78c07219 by Cheng Shao at 2023-01-28T17:16:48-05:00 compiler: properly handle ForeignHints in the wasm NCG Properly handle ForeignHints of ccall arguments/return value, insert sign extends and truncations when handling signed subwords. Fixes #22852. - - - - - 8bed166b by Ben Gamari at 2023-01-30T05:06:26-05:00 nativeGen: Disable asm-shortcutting on Darwin Asm-shortcutting may produce relative references to symbols defined in other compilation units. This is not something that MachO relocations support (see #21972). For this reason we disable the optimisation on Darwin. We do so without a warning since this flag is enabled by `-O2`. Another way to address this issue would be to rather implement a PLT-relocatable jump-table strategy. However, this would only benefit Darwin and does not seem worth the effort. Closes #21972. - - - - - da468391 by Cheng Shao at 2023-01-30T05:07:03-05:00 compiler: fix data section alignment in the wasm NCG Previously we tried to lower the alignment requirement as far as possible, based on the section kind inferred from the CLabel. For info tables, .p2align 1 was applied given the GC should only need the lowest bit to tag forwarding pointers. But this would lead to unaligned loads/stores, which has a performance penalty even if the wasm spec permits it. Furthermore, the test suite has shown memory corruption in a few cases when compacting gc is used. This patch takes a more conservative approach: all data sections except C strings align to word size. - - - - - 08ba8720 by Andreas Klebinger at 2023-01-30T21:18:45-05:00 ghc-the-library: Retain cafs in both static in dynamic builds. We use keepCAFsForGHCi.c to force -fkeep-cafs behaviour by using a __attribute__((constructor)) function. This broke for static builds where the linker discarded the object file since it was not reverenced from any exported code. We fix this by asserting that the flag is enabled using a function in the same module as the constructor. Which causes the object file to be retained by the linker, which in turn causes the constructor the be run in static builds. This changes nothing for dynamic builds using the ghc library. But causes static to also retain CAFs (as we expect them to). Fixes #22417. ------------------------- Metric Decrease: T21839r ------------------------- - - - - - 20598ef6 by Ryan Scott at 2023-01-30T21:19:20-05:00 Handle `type data` properly in tyThingParent_maybe Unlike most other data constructors, data constructors declared with `type data` are represented in `TyThing`s as `ATyCon` rather than `ADataCon`. The `ATyCon` case in `tyThingParent_maybe` previously did not consider the possibility of the underlying `TyCon` being a promoted data constructor, which led to the oddities observed in #22817. This patch adds a dedicated special case in `tyThingParent_maybe`'s `ATyCon` case for `type data` data constructors to fix these oddities. Fixes #22817. - - - - - 2f145052 by Ryan Scott at 2023-01-30T21:19:56-05:00 Fix two bugs in TypeData TH reification This patch fixes two issues in the way that `type data` declarations were reified with Template Haskell: * `type data` data constructors are now properly reified using `DataConI`. This is accomplished with a special case in `reifyTyCon`. Fixes #22818. * `type data` type constructors are now reified in `reifyTyCon` using `TypeDataD` instead of `DataD`. Fixes #22819. - - - - - d0f34f25 by Simon Peyton Jones at 2023-01-30T21:20:35-05:00 Take account of loop breakers in specLookupRule The key change is that in GHC.Core.Opt.Specialise.specLookupRule we were using realIdUnfolding, which ignores the loop-breaker flag. When given a loop breaker, rule matching therefore looped infinitely -- #22802. In fixing this I refactored a bit. * Define GHC.Core.InScopeEnv as a data type, and use it. (Previously it was a pair: hard to grep for.) * Put several functions returning an IdUnfoldingFun into GHC.Types.Id, namely idUnfolding alwaysActiveUnfoldingFun, whenActiveUnfoldingFun, noUnfoldingFun and use them. (The are all loop-breaker aware.) - - - - - de963cb6 by Matthew Pickering at 2023-01-30T21:21:11-05:00 ci: Remove FreeBSD job from release pipelines We no longer attempt to build or distribute this release - - - - - f26d27ec by Matthew Pickering at 2023-01-30T21:21:11-05:00 rel_eng: Add check to make sure that release jobs are downloaded by fetch-gitlab This check makes sure that if a job is a prefixed by "release-" then the script downloads it and understands how to map the job name to the platform. - - - - - 7619c0b4 by Matthew Pickering at 2023-01-30T21:21:11-05:00 rel_eng: Fix the name of the ubuntu-* jobs These were not uploaded for alpha1 Fixes #22844 - - - - - 68eb8877 by Matthew Pickering at 2023-01-30T21:21:11-05:00 gen_ci: Only consider release jobs for job metadata In particular we do not have a release job for FreeBSD so the generation of the platform mapping was failing. - - - - - b69461a0 by Jason Shipman at 2023-01-30T21:21:50-05:00 User's guide: Clarify overlapping instance candidate elimination This commit updates the user's guide section on overlapping instance candidate elimination to use "or" verbiage instead of "either/or" in regards to the current pair of candidates' being overlappable or overlapping. "Either IX is overlappable, or IY is overlapping" can cause confusion as it suggests "Either IX is overlappable, or IY is overlapping, but not both". This was initially discussed on this Discourse topic: https://discourse.haskell.org/t/clarification-on-overlapping-instance-candid... - - - - - 7cbdaad0 by Matthew Pickering at 2023-01-31T07:53:53-05:00 Fixes for cabal-reinstall CI job * Allow filepath to be reinstalled * Bump some version bounds to allow newer versions of libraries * Rework testing logic to avoid "install --lib" and package env files Fixes #22344 - - - - - fd8f32bf by Cheng Shao at 2023-01-31T07:54:29-05:00 rts: prevent potential divide-by-zero when tickInterval=0 This patch fixes a few places in RtsFlags.c that may result in divide-by-zero error when tickInterval=0, which is the default on wasm. Fixes #22603. - - - - - 085a6db6 by Joachim Breitner at 2023-01-31T07:55:05-05:00 Update note at beginning of GHC.Builtin.NAmes some things have been renamed since it was written, it seems. - - - - - 7716cbe6 by Cheng Shao at 2023-01-31T07:55:41-05:00 testsuite: use tgamma for cg007 gamma is a glibc-only deprecated function, use tgamma instead. It's required for fixing cg007 when testing the wasm unregisterised codegen. - - - - - 19c1fbcd by doyougnu at 2023-01-31T13:08:03-05:00 InfoTableProv: ShortText --> ShortByteString - - - - - 765fab98 by doyougnu at 2023-01-31T13:08:03-05:00 FastString: add fastStringToShorText - - - - - a83c810d by Simon Peyton Jones at 2023-01-31T13:08:38-05:00 Improve exprOkForSpeculation for classops This patch fixes #22745 and #15205, which are about GHC's failure to discard unnecessary superclass selections that yield coercions. See GHC.Core.Utils Note [exprOkForSpeculation and type classes] The main changes are: * Write new Note [NON-BOTTOM_DICTS invariant] in GHC.Core, and refer to it * Define new function isTerminatingType, to identify those guaranteed-terminating dictionary types. * exprOkForSpeculation has a new (very simple) case for ClassOpId * ClassOpId has a new field that says if the return type is an unlifted type, or a terminating type. This was surprisingly tricky to get right. In particular note that unlifted types are not terminating types; you can write an expression of unlifted type, that diverges. Not so for dictionaries (or, more precisely, for the dictionaries that GHC constructs). Metric Decrease: LargeRecord - - - - - f83374f8 by Krzysztof Gogolewski at 2023-01-31T13:09:14-05:00 Support "unusable UNPACK pragma" warning with -O0 Fixes #11270 - - - - - a2d814dc by Ben Gamari at 2023-01-31T13:09:50-05:00 configure: Always create the VERSION file Teach the `configure` script to create the `VERSION` file. This will serve as the stable interface to allow the user to determine the version number of a working tree. Fixes #22322. - - - - - 5618fc21 by sheaf at 2023-01-31T15:51:06-05:00 Cmm: track the type of global registers This patch tracks the type of Cmm global registers. This is needed in order to lint uses of polymorphic registers, such as SIMD vector registers that can be used both for floating-point and integer values. This changes allows us to refactor VanillaReg to not store VGcPtr, as that information is instead stored in the type of the usage of the register. Fixes #22297 - - - - - 78b99430 by sheaf at 2023-01-31T15:51:06-05:00 Revert "Cmm Lint: relax SIMD register assignment check" This reverts commit 3be48877, which weakened a Cmm Lint check involving SIMD vectors. Now that we keep track of the type a global register is used at, we can restore the original stronger check. - - - - - be417a47 by Ben Gamari at 2023-01-31T15:51:45-05:00 nativeGen/AArch64: Fix debugging output Previously various panics would rely on a half-written Show instance, leading to very unhelpful errors. Fix this. See #22798. - - - - - 30989d13 by Ben Gamari at 2023-01-31T15:51:45-05:00 nativeGen: Teach graph-colouring allocator that x18 is unusable Previously trivColourable for AArch64 claimed that at 18 registers were trivially-colourable. This is incorrect as x18 is reserved by the platform on AArch64/Darwin. See #22798. - - - - - 7566fd9d by Ben Gamari at 2023-01-31T15:51:45-05:00 nativeGen/AArch64: Fix graph-colouring allocator Previously various `Instr` queries used by the graph-colouring allocator failed to handle a few pseudo-instructions. This manifested in compiler panicks while compiling `SHA`, which uses `-fregs-graph`. Fixes #22798. - - - - - 2cb500a5 by Ben Gamari at 2023-01-31T15:51:45-05:00 testsuite: Add regression test for #22798 - - - - - 03d693b2 by Ben Gamari at 2023-01-31T15:52:32-05:00 Revert "Hadrian: fix doc generation" This is too large of a hammer. This reverts commit 5640cb1d84d3cce4ce0a9e90d29b2b20d2b38c2f. - - - - - f838815c by Ben Gamari at 2023-01-31T15:52:32-05:00 hadrian: Sphinx docs require templated cabal files The package-version discovery logic in `doc/users_guide/package_versions.py` uses packages' cabal files to determine package versions. Teach Sphinx about these dependencies in cases where the cabal files are generated by templates. - - - - - 2e48c19a by Ben Gamari at 2023-01-31T15:52:32-05:00 hadrian: Refactor templating logic This refactors Hadrian's autoconf-style templating logic to be explicit about which interpolation variables should be substituted in which files. This clears the way to fix #22714 without incurring rule cycles. - - - - - 93f0e3c4 by Ben Gamari at 2023-01-31T15:52:33-05:00 hadrian: Substitute LIBRARY_*_VERSION variables This teaches Hadrian to substitute the `LIBRARY_*_VERSION` variables in `libraries/prologue.txt`, fixing #22714. Fixes #22714. - - - - - 22089f69 by Ben Gamari at 2023-01-31T20:46:27-05:00 Bump transformers submodule to 0.6.0.6 Fixes #22862. - - - - - f0eefa3c by Cheng Shao at 2023-01-31T20:47:03-05:00 compiler: properly handle non-word-sized CmmSwitch scrutinees in the wasm NCG Currently, the wasm NCG has an implicit assumption: all CmmSwitch scrutinees are 32-bit integers. This is not always true; #22864 is one counter-example with a 64-bit scrutinee. This patch fixes the logic by explicitly converting the scrutinee to a word that can be used as a br_table operand. Fixes #22871. Also includes a regression test. - - - - - 9f95db54 by Simon Peyton Jones at 2023-02-01T08:55:08+00:00 Improve treatment of type applications in patterns This patch fixes a subtle bug in the typechecking of type applications in patterns, e.g. f (MkT @Int @a x y) = ... See Note [Type applications in patterns] in GHC.Tc.Gen.Pat. This fixes #19847, #22383, #19577, #21501 - - - - - 955a99ea by Simon Peyton Jones at 2023-02-01T12:31:23-05:00 Treat existentials correctly in dubiousDataConInstArgTys Consider (#22849) data T a where MkT :: forall k (t::k->*) (ix::k). t ix -> T @k a Then dubiousDataConInstArgTys MkT [Type, Foo] should return [Foo (ix::Type)] NOT [Foo (ix::k)] A bit of an obscure case, but it's an outright bug, and the fix is easy. - - - - - 0cc16aaf by Matthew Pickering at 2023-02-01T12:31:58-05:00 Bump supported LLVM range from 10 through 15 to 11 through 16 LLVM 15 turns on the new pass manager by default, which we have yet to migrate to so for new we pass the `-enable-new-pm-0` flag in our llvm-passes flag. LLVM 11 was the first version to support the `-enable-new-pm` flag so we bump the lowest supported version to 11. Our CI jobs are using LLVM 12 so they should continue to work despite this bump to the lower bound. Fixes #21936 - - - - - f94f1450 by Matthew Pickering at 2023-02-01T12:31:58-05:00 Bump DOCKER_REV to use alpine image without LLVM installed alpine_3_12 only supports LLVM 10, which is now outside the supported version range. - - - - - 083e26ed by Matthew Pickering at 2023-02-01T17:43:21-05:00 Remove tracing OPTIONS_GHC These were accidentally left over from !9542 - - - - - 354aa47d by Teo Camarasu at 2023-02-01T17:44:00-05:00 doc: fix gcdetails_block_fragmentation_bytes since annotation - - - - - 61ce5bf6 by Jaro Reinders at 2023-02-02T00:15:30-05:00 compiler: Implement higher order patterns in the rule matcher This implements proposal 555 and closes ticket #22465. See the proposal and ticket for motivation. The core changes of this patch are in the GHC.Core.Rules.match function and they are explained in the Note [Matching higher order patterns]. - - - - - 394b91ce by doyougnu at 2023-02-02T00:16:10-05:00 CI: JavaScript backend runs testsuite This MR runs the testsuite for the JS backend. Note that this is a temporary solution until !9515 is merged. Key point: The CI runs hadrian on the built cross compiler _but not_ on the bindist. Other Highlights: - stm submodule gets a bump to mark tests as broken - several tests are marked as broken or are fixed by adding more - conditions to their test runner instance. List of working commit messages: CI: test cross target _and_ emulator CI: JS: Try run testsuite with hadrian JS.CI: cleanup and simplify hadrian invocation use single bracket, print info JS CI: remove call to test_compiler from hadrian don't build haddock JS: mark more tests as broken Tracked in https://gitlab.haskell.org/ghc/ghc/-/issues/22576 JS testsuite: don't skip sum_mod test Its expected to fail, yet we skipped it which automatically makes it succeed leading to an unexpected success, JS testsuite: don't mark T12035j as skip leads to an unexpected pass JS testsuite: remove broken on T14075 leads to unexpected pass JS testsuite: mark more tests as broken JS testsuite: mark T11760 in base as broken JS testsuite: mark ManyUnbSums broken submodules: bump process and hpc for JS tests Both submodules has needed tests skipped or marked broken for th JS backend. This commit now adds these changes to GHC. See: HPC: https://gitlab.haskell.org/hpc/hpc/-/merge_requests/21 Process: https://github.com/haskell/process/pull/268 remove js_broken on now passing tests separate wasm and js backend ci test: T11760: add threaded, non-moving only_ways test: T10296a add req_c T13894: skip for JS backend tests: jspace, T22333: mark as js_broken(22573) test: T22513i mark as req_th stm submodule: mark stm055, T16707 broken for JS tests: js_broken(22374) on unpack_sums_6, T12010 dont run diff on JS CI, cleanup fixup: More CI cleanup fix: align text to master fix: align exceptions submodule to master CI: Bump DOCKER_REV Bump to ci-images commit that has a deb11 build with node. Required for !9552 testsuite: mark T22669 as js_skip See #22669 This test tests that .o-boot files aren't created when run in using the interpreter backend. Thus this is not relevant for the JS backend. testsuite: mark T22671 as broken on JS See #22835 base.testsuite: mark Chan002 fragile for JS see #22836 revert: submodule process bump bump stm submodule New hash includes skips for the JS backend. testsuite: mark RnPatternSynonymFail broken on JS Requires TH: - see !9779 - and #22261 compiler: GHC.hs ifdef import Utils.Panic.Plain - - - - - 1ffe770c by Cheng Shao at 2023-02-02T09:40:38+00:00 docs: 9.6 release notes for wasm backend - - - - - 0ada4547 by Matthew Pickering at 2023-02-02T11:39:44-05:00 Disable unfolding sharing for interface files with core definitions Ticket #22807 pointed out that the RHS sharing was not compatible with -fignore-interface-pragmas because the flag would remove unfoldings from identifiers before the `extra-decls` field was populated. For the 9.6 timescale the only solution is to disable this sharing, which will make interface files bigger but this is acceptable for the first release of `-fwrite-if-simplified-core`. For 9.8 it would be good to fix this by implementing #20056 due to the large number of other bugs that would fix. I also improved the error message in tc_iface_binding to avoid the "no match in record selector" error but it should never happen now as the entire sharing logic is disabled. Also added the currently broken test for #22807 which could be fixed by !6080 Fixes #22807 - - - - - 7e2d3eb5 by lrzlin at 2023-02-03T05:23:27-05:00 Enable tables next to code for LoongArch64 - - - - - 2931712a by Wander Hillen at 2023-02-03T05:24:06-05:00 Move pthread and timerfd ticker implementations to separate files - - - - - 41c4baf8 by Ben Gamari at 2023-02-03T05:24:44-05:00 base: Fix Note references in GHC.IO.Handle.Types - - - - - 31358198 by Andrew Lelechenko at 2023-02-03T05:25:22-05:00 Bump submodule containers to 0.6.7 Metric Decrease: ManyConstructors T10421 T12425 T12707 T13035 T13379 T15164 T1969 T783 T9198 T9961 WWRec - - - - - 8feb9301 by Ben Gamari at 2023-02-03T05:25:59-05:00 gitlab-ci: Eliminate redundant ghc --info output Previously ci.sh would emit the output of `ghc --info` every time it ran when using the nix toolchain. This produced a significant amount of noise. See #22861. - - - - - de1d1512 by Ryan Scott at 2023-02-03T14:07:30-05:00 Windows: Remove mingwex dependency The clang based toolchain uses ucrt as its math library and so mingwex is no longer needed. In fact using mingwex will cause incompatibilities as the default routines in both have differing ULPs and string formatting modifiers. ``` $ LIBRARY_PATH=/mingw64/lib ghc/_build/stage1/bin/ghc Bug.hs -fforce-recomp && ./Bug.exe [1 of 2] Compiling Main ( Bug.hs, Bug.o ) ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__imp___p__environ' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `__hscore_get_errno' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziError_errnoToIOError_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziWindows_failIf2_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePageziAPI_mkCodePageEncoding_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncodingziCodePage_currentCodePage_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziEncoding_getForeignEncoding_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_ForeignziCziString_withCStringLen1_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziInternals_zdwflushCharReadBuffer_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziIOziHandleziText_hGetBuf1_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziFingerprint_fingerprintString_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_DataziTypeableziInternal_mkTrCon_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziException_errorCallWithCallStackException_closure' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\base-4.17.0.0\libHSbase-4.17.0.0.a: unknown symbol `base_GHCziErr_error_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `base_DataziMaybe_fromJust1_info' ghc.exe: | C:\Users\winferno\Software\ghc\_build\stage1\lib\x86_64-windows-ghc-9.5.20220908\template-haskell-2.19.0.0\libHStemplate-haskell-2.19.0.0.a: unknown symbol `templatezmhaskell_LanguageziHaskellziTHziSyntax_IntPrimL_con_info' ghc.exe: ^^ Could not load 'templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure', dependency unresolved. See top entry above. <no location info>: error: GHC.ByteCode.Linker.lookupCE During interactive linking, GHCi couldn't find the following symbol: templatezmhaskell_LanguageziHaskellziTHziLibziInternal_stringL_closure This may be due to you not asking GHCi to load extra object files, archives or DLLs needed by your current session. Restart GHCi, specifying the missing library using the -L/path/to/object/dir and -lmissinglibname flags, or simply by naming the relevant files on the GHCi command line. Alternatively, this link failure might indicate a bug in GHCi. If you suspect the latter, please report this as a GHC bug: https://www.haskell.org/ghc/reportabug ``` - - - - - 48e39195 by Tamar Christina at 2023-02-03T14:07:30-05:00 linker: Fix BFD import libraries This commit fixes the BFD style import library support in the runtime linker. This was accidentally broken during the refactoring to clang and went unnoticed because clang itself is unable to generate the BFD style import libraries. With this change we can not link against both GCC or Clang produced libraries again and intermix code produced by both compilers. - - - - - b2bb3e62 by Ben Gamari at 2023-02-03T14:07:30-05:00 Bump Windows toolchain Updates to LLVM 14, hopefully fixing #21964. - - - - - bf3f88a1 by Andreas Klebinger at 2023-02-03T14:08:07-05:00 Fix CallerCC potentially shadowing other cost centres. Add a CallerCC cost centre flavour for cost centres added by the CallerCC pass. This avoids potential accidental shadowing between CCs added by user annotations and ones added by CallerCC. - - - - - faea4bcd by j at 2023-02-03T14:08:47-05:00 Disable several ignore-warning flags in genapply. - - - - - 25537dfd by Ben Gamari at 2023-02-04T04:12:57-05:00 Revert "Use fix-sized bit-fiddling primops for fixed size boxed types" This reverts commit 4512ad2d6a8e65ea43c86c816411cb13b822f674. This was never applied to master/9.6 originally. (cherry picked from commit a44bdc2720015c03d57f470b759ece7fab29a57a) - - - - - 7612dc71 by Krzysztof Gogolewski at 2023-02-04T04:13:34-05:00 Minor refactor * Introduce refactorDupsOn f = refactorDups (comparing f) * Make mkBigTupleCase and coreCaseTuple monadic. Every call to those functions was preceded by calling newUniqueSupply. * Use mkUserLocalOrCoVar, which is equivalent to combining mkLocalIdOrCoVar with mkInternalName. - - - - - 5a54ac0b by Andrew Lelechenko at 2023-02-04T18:48:32-05:00 Fix colors in emacs terminal - - - - - 3c0f0c6d by Andrew Lelechenko at 2023-02-04T18:49:11-05:00 base changelog: move entries which were not backported to ghc-9.6 to base-4.19 section - - - - - b18fbf52 by Josh Meredith at 2023-02-06T07:47:57+00:00 Update JavaScript fileStat to match Emscripten layout - - - - - 6636b670 by Sylvain Henry at 2023-02-06T09:43:21-05:00 JS: replace "js" architecture with "javascript" Despite Cabal supporting any architecture name, `cabal --check` only supports a few built-in ones. Sadly `cabal --check` is used by Hackage hence using any non built-in name in a package (e.g. `arch(js)`) is rejected and the package is prevented from being uploaded on Hackage. Luckily built-in support for the `javascript` architecture was added for GHCJS a while ago. In order to allow newer `base` to be uploaded on Hackage we make the switch from `js` to `javascript` architecture. Fixes #22740. Co-authored-by: Ben Gamari <ben@smart-cactus.org> - - - - - 77a8234c by Luite Stegeman at 2023-02-06T09:43:59-05:00 Fix marking async exceptions in the JS backend Async exceptions are posted as a pair of the exception and the thread object. This fixes the marking pass to correctly follow the two elements of the pair. Potentially fixes #22836 - - - - - 3e09cf82 by Jan Hrček at 2023-02-06T09:44:38-05:00 Remove extraneous word in Roles user guide - - - - - b17fb3d9 by sheaf at 2023-02-07T10:51:33-05:00 Don't allow . in overloaded labels This patch removes . from the list of allowed characters in a non-quoted overloaded label, as it was realised this steals syntax, e.g. (#.). Users who want this functionality will have to add quotes around the label, e.g. `#"17.28"`. Fixes #22821 - - - - - 5dce04ee by romes at 2023-02-07T10:52:10-05:00 Update kinds in comments in GHC.Core.TyCon Use `Type` instead of star kind (*) Fix comment with incorrect kind * to have kind `Constraint` - - - - - 92916194 by Ben Gamari at 2023-02-07T10:52:48-05:00 Revert "Use fix-sized equality primops for fixed size boxed types" This reverts commit 024020c38126f3ce326ff56906d53525bc71690c. This was never applied to master/9.6 originally. See #20405 for why using these primops is a bad idea. (cherry picked from commit b1d109ad542e4c37ae5af6ace71baf2cb509d865) - - - - - c1670c6b by Sylvain Henry at 2023-02-07T21:25:18-05:00 JS: avoid head/tail and unpackFS - - - - - a9912de7 by Krzysztof Gogolewski at 2023-02-07T21:25:53-05:00 testsuite: Fix Python warnings (#22856) - - - - - 9ee761bf by sheaf at 2023-02-08T14:40:40-05:00 Fix tyvar scoping within class SPECIALISE pragmas Type variables from class/instance headers scope over class/instance method type signatures, but DO NOT scope over the type signatures in SPECIALISE and SPECIALISE instance pragmas. The logic in GHC.Rename.Bind.rnMethodBinds correctly accounted for SPECIALISE inline pragmas, but forgot to apply the same treatment to method SPECIALISE pragmas, which lead to a Core Lint failure with an out-of-scope type variable. This patch makes sure we apply the same logic for both cases. Fixes #22913 - - - - - 7eac2468 by Matthew Pickering at 2023-02-08T14:41:17-05:00 Revert "Don't keep exit join points so much" This reverts commit caced75765472a1a94453f2e5a439dba0d04a265. It seems the patch "Don't keep exit join points so much" is causing wide-spread regressions in the bytestring library benchmarks. If I revert it then the 9.6 numbers are better on average than 9.4. See https://gitlab.haskell.org/ghc/ghc/-/issues/22893#note_479525 ------------------------- Metric Decrease: MultiComponentModules MultiComponentModulesRecomp MultiLayerModules MultiLayerModulesRecomp MultiLayerModulesTH_Make T12150 T13386 T13719 T21839c T3294 parsing001 ------------------------- - - - - - 633f2799 by Cheng Shao at 2023-02-08T18:42:16-05:00 testsuite: remove config.use_threads This patch simplifies the testsuite driver by removing the use_threads config field. It's just a degenerate case of threads=1. - - - - - ca6673e3 by Cheng Shao at 2023-02-08T18:42:16-05:00 testsuite: use concurrent.futures.ThreadPoolExecutor in the driver The testsuite driver used to create one thread per test case, and explicitly use semaphore and locks for rate limiting and synchronization. This is a bad practice in any language, and occasionally may result in livelock conditions (e.g. #22889). This patch uses concurrent.futures.ThreadPoolExecutor for scheduling test case runs, which is simpler and more robust. - - - - - f22cce70 by Alan Zimmerman at 2023-02-08T18:42:51-05:00 EPA: Comment between module and where should be in header comments Do not apply the heuristic to associate a comment with a prior declaration for the first declaration in the file. Closes #22919 - - - - - d69ecac2 by Josh Meredith at 2023-02-09T03:24:05-05:00 JS generated refs: update testsuite conditions - - - - - 2ea1a6bc by sheaf at 2023-02-09T03:24:44-05:00 Bump transformers to 0.6.1.0 This allows us to avoid orphans for Foldable1 instances, fixing #22898. Updates transformers submodule. - - - - - d9d0c28d by konsumlamm at 2023-02-09T14:07:48-05:00 Update `Data.List.singleton` doc comment - - - - - fe9cd6ef by Ben Gamari at 2023-02-09T14:08:23-05:00 gitlab-template: Emphasize `user facing` label My sense is that the current mention of the ~"user facing" label is overlooked by many MR authors. Let's move this point up in the list to make it more likely that it is seen. Also rephrase some of the points. - - - - - e45eb828 by Simon Peyton Jones at 2023-02-10T06:51:28-05:00 Refactor the simplifier a bit to fix #22761 The core change in this commit, which fixes #22761, is that * In a Core rule, ru_rhs is always occ-analysed. This means adding a couple of calls to occurAnalyseExpr when building a Rule, in * GHC.Core.Rules.mkRule * GHC.Core.Opt.Simplify.Iteration.simplRules But diagosing the bug made me stare carefully at the code of the Simplifier, and I ended up doing some only-loosely-related refactoring. * I think that RULES could be lost because not every code path did addBndrRules * The code around lambdas was very convoluted It's mainly moving deck chairs around, but I like it more now. - - - - - 11e0cacb by Rebecca Turner at 2023-02-10T06:52:09-05:00 Detect the `mold` linker Enables support for the `mold` linker by rui314. - - - - - 59556235 by parsonsmatt at 2023-02-10T09:53:11-05:00 Add Lift instance for Fixed - - - - - c44e5f30 by Sylvain Henry at 2023-02-10T09:53:51-05:00 Testsuite: decrease length001 timeout for JS (#22921) - - - - - 133516af by Zubin Duggal at 2023-02-10T09:54:27-05:00 compiler: Use NamedFieldPuns for `ModIface_` and `ModIfaceBackend` `NFData` instances This is a minor refactor that makes it easy to add and remove fields from `ModIface_` and `ModIfaceBackend`. Also change the formatting to make it clear exactly which fields are fully forced with `rnf` - - - - - 1e9eac1c by Matthew Pickering at 2023-02-13T11:36:41+01:00 Refresh profiling docs I went through the whole of the profiling docs and tried to amend them to reflect current best practices and tooling. In particular I removed some old references to tools such as hp2any and replaced them with references to eventlog2html. - - - - - da208b9a by Matthew Pickering at 2023-02-13T11:36:41+01:00 docs: Add section about profiling and foreign calls Previously there was no documentation for how foreign calls interacted with the profiler. This can be quite confusing for users so getting it into the user guide is the first step to a potentially better solution. See the ticket for more insightful discussion. Fixes #21764 - - - - - 081640f1 by Andrew Lelechenko at 2023-02-13T12:51:52-05:00 Document that -fproc-alignment was introduced only in GHC 8.6 - - - - - 16adc349 by Sven Tennie at 2023-02-14T11:26:31-05:00 Add clangd flag to include generated header files This enables clangd to correctly check C files that import Rts.h. (The added include directory contains ghcautoconf.h et. al.) - - - - - c399ccd9 by amesgen at 2023-02-14T11:27:14-05:00 Mention new `Foreign.Marshal.Pool` implementation in User's Guide - - - - - b9282cf7 by Ben Gamari at 2023-02-14T11:27:50-05:00 upload_ghc_libs: More control over which packages to operate on Here we add a `--skip` flag to `upload_ghc_libs`, making it easier to limit which packages to upload. This is often necessary when one package is not uploadable (e.g. see #22740). - - - - - aa3a262d by PHO at 2023-02-14T11:28:29-05:00 Assume platforms support rpaths if they use either ELF or Mach-O Not only Linux, Darwin, and FreeBSD support rpaths. Determine the usability of rpaths based on the object format, not on OS. - - - - - 47716024 by PHO at 2023-02-14T11:29:09-05:00 RTS linker: Improve compatibility with NetBSD 1. Hint address to NetBSD mmap(2) has a different semantics from that of Linux. When a hint address is provided, mmap(2) searches for a free region at or below the hint but *never* above it. This means we can't reliably search for free regions incrementally on the userland, especially when ASLR is enabled. Let the kernel do it for us if we don't care where the mapped address is going to be. 2. NetBSD not only hates to map pages as rwx, but also disallows to switch pages from rw- to r-x unless the intention is declared when pages are initially requested. This means we need a new MemoryAccess mode for pages that are going to be changed to r-x. - - - - - 11de324a by Li-yao Xia at 2023-02-14T11:29:49-05:00 base: Move changelog entry to its place - - - - - 75930424 by Ben Gamari at 2023-02-14T11:30:27-05:00 nativeGen/AArch64: Emit Atomic{Read,Write} inline Previously the AtomicRead and AtomicWrite operations were emitted as out-of-line calls. However, these tend to be very important for performance, especially the RELAXED case (which only exists for ThreadSanitizer checking). Fixes #22115. - - - - - d6411d6c by Andreas Klebinger at 2023-02-14T11:31:04-05:00 Fix some correctness issues around tag inference when targeting the bytecode generator. * Let binders are now always assumed untagged for bytecode. * Imported referenced are now always assumed to be untagged for bytecode. Fixes #22840 - - - - - 9fb4ca89 by sheaf at 2023-02-14T11:31:49-05:00 Introduce warning for loopy superclass solve Commit aed1974e completely re-engineered the treatment of loopy superclass dictionaries in instance declarations. Unfortunately, it has the potential to break (albeit in a rather minor way) user code. To alleviate migration concerns, this commit re-introduces the old behaviour. Any reliance on this old behaviour triggers a warning, controlled by `-Wloopy-superclass-solve`. The warning text explains that GHC might produce bottoming evidence, and provides a migration strategy. This allows us to provide a graceful migration period, alerting users when they are relying on this unsound behaviour. Fixes #22912 #22891 #20666 #22894 #22905 - - - - - 1928c7f3 by Cheng Shao at 2023-02-14T11:32:26-05:00 rts: make it possible to change mblock size on 32-bit targets The MBLOCK_SHIFT macro must be the single source of truth for defining the mblock size, and changing it should only affect performance, not correctness. This patch makes it truly possible to reconfigure mblock size, at least on 32-bit targets, by fixing places which implicitly relied on the previous MBLOCK_SHIFT constant. Fixes #22901. - - - - - 78aa3b39 by Simon Hengel at 2023-02-14T11:33:06-05:00 Update outdated references to notes - - - - - e8baecd2 by meooow25 at 2023-02-14T11:33:49-05:00 Documentation: Improve Foldable1 documentation * Explain foldrMap1, foldlMap1, foldlMap1', and foldrMap1' in greater detail, the text is mostly adapted from documentation of Foldable. * Describe foldr1, foldl1, foldl1' and foldr1' in terms of the above functions instead of redoing the full explanation. * Small updates to documentation of fold1, foldMap1 and toNonEmpty, again adapting from Foldable. * Update the foldMap1 example to lists instead of Sum since this is recommended for lazy right-associative folds. Fixes #22847 - - - - - 85a1a575 by romes at 2023-02-14T11:34:25-05:00 fix: Mark ghci Prelude import as implicit Fixes #22829 In GHCi, we were creating an import declaration for Prelude but we were not setting it as an implicit declaration. Therefore, ghci's import of Prelude triggered -Wmissing-import-lists. Adds regression test T22829 to testsuite - - - - - 3b019a7a by Cheng Shao at 2023-02-14T11:35:03-05:00 compiler: fix generateCgIPEStub for no-tables-next-to-code builds generateCgIPEStub already correctly implements the CmmTick finding logic for when tables-next-to-code is on/off, but it used the wrong predicate to decide when to switch between the two. Previously it switches based on whether the codegen is unregisterised, but there do exist registerised builds that disable tables-next-to-code! This patch corrects that problem. Fixes #22896. - - - - - 08c0822c by doyougnu at 2023-02-15T00:16:39-05:00 docs: release notes, user guide: add js backend Follow up from #21078 - - - - - 79d8fd65 by Bryan Richter at 2023-02-15T00:17:15-05:00 Allow failure in nightly-x86_64-linux-deb10-no_tntc-validate See #22343 - - - - - 9ca51f9e by Cheng Shao at 2023-02-15T00:17:53-05:00 rts: add the rts_clearMemory function This patch adds the rts_clearMemory function that does its best to zero out unused RTS memory for a wasm backend use case. See the comment above rts_clearMemory() prototype declaration for more detailed explanation. Closes #22920. - - - - - 26df73fb by Oleg Grenrus at 2023-02-15T22:20:57-05:00 Add -single-threaded flag to force single threaded rts This is the small part of implementing https://github.com/ghc-proposals/ghc-proposals/pull/240 - - - - - 631c6c72 by Cheng Shao at 2023-02-16T06:43:09-05:00 docs: add a section for the wasm backend Fixes #22658 - - - - - 1878e0bd by Bryan Richter at 2023-02-16T06:43:47-05:00 tests: Mark T12903 fragile everywhere See #21184 - - - - - b9420eac by Bryan Richter at 2023-02-16T06:43:47-05:00 Mark all T5435 variants as fragile See #22970. - - - - - df3d94bd by Sylvain Henry at 2023-02-16T06:44:33-05:00 Testsuite: mark T13167 as fragile for JS (#22921) - - - - - 324e925b by Sylvain Henry at 2023-02-16T06:45:15-05:00 JS: disable debugging info for heap objects - - - - - 518af814 by Josh Meredith at 2023-02-16T10:16:32-05:00 Factor JS Rts generation for h$c{_,0,1,2} into h$c{n} and improve name caching - - - - - 34cd308e by Ben Gamari at 2023-02-16T10:17:08-05:00 base: Note move of GHC.Stack.CCS.whereFrom to GHC.InfoProv in changelog Fixes #22883. - - - - - 12965aba by Simon Peyton Jones at 2023-02-16T10:17:46-05:00 Narrow the dont-decompose-newtype test Following #22924 this patch narrows the test that stops us decomposing newtypes. The key change is the use of noGivenNewtypeReprEqs in GHC.Tc.Solver.Canonical.canTyConApp. We went to and fro on the solution, as you can see in #22924. The result is carefully documented in Note [Decomoposing newtype equalities] On the way I had revert most of commit 3e827c3f74ef76d90d79ab6c4e71aa954a1a6b90 Author: Richard Eisenberg <rae@cs.brynmawr.edu> Date: Mon Dec 5 10:14:02 2022 -0500 Do newtype unwrapping in the canonicaliser and rewriter See Note [Unwrap newtypes first], which has the details. It turns out that (a) 3e827c3f makes GHC behave worse on some recursive newtypes (see one of the tests on this commit) (b) the finer-grained test (namely noGivenNewtypeReprEqs) renders 3e827c3f unnecessary - - - - - 5b038888 by Andrew Lelechenko at 2023-02-16T10:18:24-05:00 Documentation: add an example of SPEC usage - - - - - 681e0e8c by sheaf at 2023-02-16T14:09:56-05:00 No default finalizer exception handler Commit cfc8e2e2 introduced a mechanism for handling of exceptions that occur during Handle finalization, and 372cf730 set the default handler to print out the error to stderr. However, #21680 pointed out we might not want to set this by default, as it might pollute users' terminals with unwanted information. So, for the time being, the default handler discards the exception. Fixes #21680 - - - - - b3ac17ad by Matthew Pickering at 2023-02-16T14:10:31-05:00 unicode: Don't inline bitmap in generalCategory generalCategory contains a huge literal string but is marked INLINE, this will duplicate the string into any use site of generalCategory. In particular generalCategory is used in functions like isSpace and the literal gets inlined into this function which makes it massive. https://github.com/haskell/core-libraries-committee/issues/130 Fixes #22949 ------------------------- Metric Decrease: T4029 T18304 ------------------------- - - - - - 8988eeef by sheaf at 2023-02-16T20:32:27-05:00 Expand synonyms in RoughMap We were failing to expand type synonyms in the function GHC.Core.RoughMap.typeToRoughMatchLookupTc, even though the RoughMap infrastructure crucially relies on type synonym expansion to work. This patch adds the missing type-synonym expansion. Fixes #22985 - - - - - 3dd50e2f by Matthew Pickering at 2023-02-16T20:33:03-05:00 ghcup-metadata: Add test artifact Add the released testsuite tarball to the generated ghcup metadata. - - - - - c6a967d9 by Matthew Pickering at 2023-02-16T20:33:03-05:00 ghcup-metadata: Use Ubuntu and Rocky bindists Prefer to use the Ubuntu 20.04 and 18.04 binary distributions on Ubuntu and Linux Mint. Prefer to use the Rocky 8 binary distribution on unknown distributions. - - - - - be0b7209 by Matthew Pickering at 2023-02-17T09:37:16+00:00 Add INLINABLE pragmas to `generic*` functions in Data.OldList These functions are * recursive * overloaded So it's important to add an `INLINABLE` pragma to each so that they can be specialised at the use site when the specific numeric type is known. Adding these pragmas improves the LazyText replicate benchmark (see https://gitlab.haskell.org/ghc/ghc/-/issues/22886#note_481020) https://github.com/haskell/core-libraries-committee/issues/129 - - - - - a203ad85 by Sylvain Henry at 2023-02-17T15:59:16-05:00 Merge libiserv with ghci `libiserv` serves no purpose. As it depends on `ghci` and doesn't have more dependencies than the `ghci` package, its code could live in the `ghci` package too. This commit also moves most of the code from the `iserv` program into the `ghci` package as well so that it can be reused. This is especially useful for the implementation of TH for the JS backend (#22261, !9779). - - - - - 7080a93f by Simon Peyton Jones at 2023-02-20T12:06:32+01:00 Improve GHC.Tc.Gen.App.tcInstFun It wasn't behaving right when inst_final=False, and the function had no type variables f :: Foo => Int Rather a corner case, but we might as well do it right. Fixes #22908 Unexpectedly, three test cases (all using :type in GHCi) got slightly better output as a result: T17403, T14796, T12447 - - - - - 2592ab69 by Cheng Shao at 2023-02-20T10:35:30-05:00 compiler: fix cost centre profiling breakage in wasm NCG due to incorrect register mapping The wasm NCG used to map CCCS to a wasm global, based on the observation that CCCS is a transient register that's already handled by thread state load/store logic, so it doesn't need to be backed by the rCCCS field in the register table. Unfortunately, this is wrong, since even when Cmm execution hasn't yielded back to the scheduler, the Cmm code may call enterFunCCS, which does use rCCCS. This breaks cost centre profiling in a subtle way, resulting in inaccurate stack traces in some test cases. The fix is simple though: just remove the CCCS mapping. - - - - - 26243de1 by Alexis King at 2023-02-20T15:27:17-05:00 Handle top-level Addr# literals in the bytecode compiler Fixes #22376. - - - - - 0196cc2b by romes at 2023-02-20T15:27:52-05:00 fix: Explicitly flush stdout on plugin Because of #20791, the plugins tests often fail. This is a temporary fix to stop the tests from failing due to unflushed outputs on windows and the explicit flush should be removed when #20791 is fixed. - - - - - 4327d635 by Ryan Scott at 2023-02-20T20:44:34-05:00 Don't generate datacon wrappers for `type data` declarations Data constructor wrappers only make sense for _value_-level data constructors, but data constructors for `type data` declarations only exist at the _type_ level. This patch does the following: * The criteria in `GHC.Types.Id.Make.mkDataConRep` for whether a data constructor receives a wrapper now consider whether or not its parent data type was declared with `type data`, omitting a wrapper if this is the case. * Now that `type data` data constructors no longer receive wrappers, there is a spot of code in `refineDefaultAlt` that panics when it encounters a value headed by a `type data` type constructor. I've fixed this with a special case in `refineDefaultAlt` and expanded `Note [Refine DEFAULT case alternatives]` to explain why we do this. Fixes #22948. - - - - - 96dc58b9 by Ryan Scott at 2023-02-20T20:44:35-05:00 Treat type data declarations as empty when checking pattern-matching coverage The data constructors for a `type data` declaration don't exist at the value level, so we don't want GHC to warn users to match on them. Fixes #22964. - - - - - ff8e99f6 by Ryan Scott at 2023-02-20T20:44:35-05:00 Disallow `tagToEnum#` on `type data` types We don't want to allow users to conjure up values of a `type data` type using `tagToEnum#`, as these simply don't exist at the value level. - - - - - 8e765aff by Andrew Lelechenko at 2023-02-21T12:03:24-05:00 Bump submodule text to 2.0.2 - - - - - 172ff88f by Georgi Lyubenov at 2023-02-21T18:35:56-05:00 GHC proposal 496 - Nullary record wildcards This patch implements GHC proposal 496, which allows record wildcards to be used for nullary constructors, e.g. data A = MkA1 | MkA2 { fld1 :: Int } f :: A -> Int f (MkA1 {..}) = 0 f (MkA2 {..}) = fld1 To achieve this, we add arity information to the record field environment, so that we can accept a constructor which has no fields while continuing to reject non-record constructors with more than 1 field. See Note [Nullary constructors and empty record wildcards], as well as the more general overview in Note [Local constructor info in the renamer], both in the newly introduced GHC.Types.ConInfo module. Fixes #22161 - - - - - f70a0239 by sheaf at 2023-02-21T18:36:35-05:00 ghc-prim: levity-polymorphic array equality ops This patch changes the pointer-equality comparison operations in GHC.Prim.PtrEq to work with arrays of unlifted values, e.g. sameArray# :: forall {l} (a :: TYPE (BoxedRep l)). Array# a -> Array# a -> Int# Fixes #22976 - - - - - 9296660b by Andreas Klebinger at 2023-02-21T23:58:05-05:00 base: Correct @since annotation for FP<->Integral bit cast operations. Fixes #22708 - - - - - f11d9c27 by romes at 2023-02-21T23:58:42-05:00 fix: Update documentation links Closes #23008 Additionally batches some fixes to pointers to the Note [Wired-in units], and a typo in said note. - - - - - fb60339f by Bryan Richter at 2023-02-23T14:45:17+02:00 Propagate failure if unable to push notes - - - - - 8e170f86 by Alexis King at 2023-02-23T16:59:22-05:00 rts: Fix `prompt#` when profiling is enabled This commit also adds a new -Dk RTS option to the debug RTS to assist debugging continuation captures. Currently, the printed information is quite minimal, but more can be added in the future if it proves to be useful when debugging future issues. fixes #23001 - - - - - e9e7a00d by sheaf at 2023-02-23T17:00:01-05:00 Explicit migration timeline for loopy SC solving This patch updates the warning message introduced in commit 9fb4ca89bff9873e5f6a6849fa22a349c94deaae to specify an explicit migration timeline: GHC will no longer support this constraint solving mechanism starting from GHC 9.10. Fixes #22912 - - - - - 4eb9c234 by Sylvain Henry at 2023-02-24T17:27:45-05:00 JS: make some arithmetic primops faster (#22835) Don't use BigInt for wordAdd2, mulWord32, and timesInt32. Co-authored-by: Matthew Craven <5086-clyring@users.noreply.gitlab.haskell.org> - - - - - 92e76483 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump terminfo submodule to 0.4.1.6 - - - - - f229db14 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump unix submodule to 2.8.1.0 - - - - - 47bd48c1 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump deepseq submodule to 1.4.8.1 - - - - - d2012594 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump directory submodule to 1.3.8.1 - - - - - df6f70d1 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump process submodule to v1.6.17.0 - - - - - 4c869e48 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump hsc2hs submodule to 0.68.8 - - - - - 81d96642 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump array submodule to 0.5.4.0 - - - - - 6361f771 by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump Cabal submodule to 3.9 pre-release - - - - - 4085fb6c by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump filepath submodule to 1.4.100.1 - - - - - 2bfad50f by Ben Gamari at 2023-02-24T17:28:20-05:00 Bump haskeline submodule to 0.8.2.1 - - - - - fdc89a8d by Ben Gamari at 2023-02-24T21:29:32-05:00 gitlab-ci: Run nix-build with -v0 This significantly cuts down on the amount of noise in the job log. Addresses #22861. - - - - - 69fb0b13 by Aaron Allen at 2023-02-24T21:30:10-05:00 Fix ParallelListComp out of scope suggestion This patch makes it so vars from one block of a parallel list comprehension are not in scope in a subsequent block during type checking. This was causing GHC to emit a faulty suggestion when an out of scope variable shared the occ name of a var from a different block. Fixes #22940 - - - - - ece092d0 by Simon Peyton Jones at 2023-02-24T21:30:45-05:00 Fix shadowing bug in prepareAlts As #23012 showed, GHC.Core.Opt.Simplify.Utils.prepareAlts was using an OutType to construct an InAlt. When shadowing is in play, this is outright wrong. See Note [Shadowing in prepareAlts]. - - - - - 7825fef9 by Sylvain Henry at 2023-02-24T21:31:25-05:00 JS: Store CI perf results (fix #22923) - - - - - b56025f4 by Gergő Érdi at 2023-02-27T13:34:22+00:00 Don't specialise incoherent instance applications Using incoherent instances, there can be situations where two occurrences of the same overloaded function at the same type use two different instances (see #22448). For incoherently resolved instances, we must mark them with `nospec` to avoid the specialiser rewriting one to the other. This marking is done during the desugaring of the `WpEvApp` wrapper. Fixes #22448 Metric Increase: T15304 - - - - - d0c7bbed by Tom Ellis at 2023-02-27T20:04:07-05:00 Fix SCC grouping example - - - - - f84a8cd4 by Bryan Richter at 2023-02-28T05:58:37-05:00 Mark setnumcapabilities001 fragile - - - - - 29a04d6e by Bryan Richter at 2023-02-28T05:58:37-05:00 Allow nightly-x86_64-linux-deb10-validate+thread_sanitizer to fail See #22520 - - - - - 9fa54572 by Cheng Shao at 2023-02-28T05:59:15-05:00 ghc-prim: fix hs_cmpxchg64 function prototype hs_cmpxchg64 must return a StgWord64, otherwise incorrect runtime results of 64-bit MO_Cmpxchg will appear in 32-bit unregisterised builds, which go unnoticed at compile-time due to C implicit casting in .hc files. - - - - - 0c200ab7 by Simon Peyton Jones at 2023-02-28T11:10:31-05:00 Account for local rules in specImports As #23024 showed, in GHC.Core.Opt.Specialise.specImports, we were generating specialisations (a locally-define function) for imported functions; and then generating specialisations for those locally-defined functions. The RULE for the latter should be attached to the local Id, not put in the rules-for-imported-ids set. Fix is easy; similar to what happens in GHC.HsToCore.addExportFlagsAndRules - - - - - 8b77f9bf by Sylvain Henry at 2023-02-28T11:11:21-05:00 JS: fix for overlap with copyMutableByteArray# (#23033) The code wasn't taking into account some kind of overlap. cgrun070 has been extended to test the missing case. - - - - - 239202a2 by Sylvain Henry at 2023-02-28T11:12:03-05:00 Testsuite: replace some js_skip with req_cmm req_cmm is more informative than js_skip - - - - - 7192ef91 by Simon Peyton Jones at 2023-02-28T18:54:59-05:00 Take more care with unlifted bindings in the specialiser As #22998 showed, we were floating an unlifted binding to top level, which breaks a Core invariant. The fix is easy, albeit a little bit conservative. See Note [Care with unlifted bindings] in GHC.Core.Opt.Specialise - - - - - bb500e2a by Simon Peyton Jones at 2023-02-28T18:55:35-05:00 Account for TYPE vs CONSTRAINT in mkSelCo As #23018 showed, in mkRuntimeRepCo we need to account for coercions between TYPE and COERCION. See Note [mkRuntimeRepCo] in GHC.Core.Coercion. - - - - - 79ffa170 by Ben Gamari at 2023-03-01T04:17:20-05:00 hadrian: Add dependency from lib/settings to mk/config.mk In 81975ef375de07a0ea5a69596b2077d7f5959182 we attempted to fix #20253 by adding logic to the bindist Makefile to regenerate the `settings` file from information gleaned by the bindist `configure` script. However, this fix had no effect as `lib/settings` is shipped in the binary distribution (to allow in-place use of the binary distribution). As `lib/settings` already existed and its rule declared no dependencies, `make` would fail to use the added rule to regenerate it. Fix this by explicitly declaring a dependency from `lib/settings` on `mk/config.mk`. Fixes #22982. - - - - - a2a1a1c0 by Sebastian Graf at 2023-03-01T04:17:56-05:00 Revert the main payload of "Make `drop` and `dropWhile` fuse (#18964)" This reverts the bits affecting fusion of `drop` and `dropWhile` of commit 0f7588b5df1fc7a58d8202761bf1501447e48914 and keeps just the small refactoring unifying `flipSeqTake` and `flipSeqScanl'` into `flipSeq`. It also adds a new test for #23021 (which was the reason for reverting) as well as adds a clarifying comment to T18964. Fixes #23021, unfixes #18964. Metric Increase: T18964 Metric Decrease: T18964 - - - - - cf118e2f by Simon Peyton Jones at 2023-03-01T04:18:33-05:00 Refine the test for naughty record selectors The test for naughtiness in record selectors is surprisingly subtle. See the revised Note [Naughty record selectors] in GHC.Tc.TyCl.Utils. Fixes #23038. - - - - - 86f240ca by romes at 2023-03-01T04:19:10-05:00 fix: Consider strictness annotation in rep_bind Fixes #23036 - - - - - 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 - - - - - 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 - - - - - 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. - - - - - 5f7a4a6d by Ben Gamari at 2023-03-02T22:43:22-05:00 rts: Introduce stgMallocAlignedBytes - - - - - 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. - - - - - 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. - - - - - 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 - - - - - 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 - - - - - 2f97c861 by Simon Peyton Jones at 2023-03-02T22:45:11-05:00 Get the right in-scope set in etaBodyForJoinPoint Fixes #23026 - - - - - 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-...) - - - - - 0c694895 by David Feuer at 2023-03-03T11:40:47-05:00 Document getSolo - - - - - 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@gmail.com> - - - - - 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 - - - - - bf43ba92 by Simon Peyton Jones at 2023-03-04T01:18:23-05:00 Add test for T22793 - - - - - c6e1f3cd by Chris Wendt at 2023-03-04T03:35:18-07:00 Fix typo in docs referring to threadLabel - - - - - 232cfc24 by Simon Peyton Jones at 2023-03-05T19:57:30-05:00 Add regression test for #22328 - - - - - 5ed77deb by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Enable response files for linker if supported - - - - - 1e0f6c89 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Synchronize `configure.ac` and `distrib/configure.ac.in` - - - - - 70560952 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Fix `hadrian/bindist/config.mk.in` … as suggested by @bgamari - - - - - b042b125 by sheaf at 2023-03-06T17:06:50-05:00 Apply 1 suggestion(s) to 1 file(s) - - - - - 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. - - - - - 83b0177e by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Quote variables … as suggested by @bgamari - - - - - 845f404d by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Fix configure failure on alpine linux - - - - - c56a3ae6 by Gabriella Gonzalez at 2023-03-06T17:06:50-05:00 Small fixes to configure script - - - - - 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 - - - - - 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] - - - - - a5afc8ab by Andrew Lelechenko at 2023-03-06T22:51:01-05:00 Documentation: describe laziness of several function from Data.List - - - - - 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. - - - - - 2aa07708 by MorrowM at 2023-03-07T21:22:22-05:00 Fix documentation for traceWith and friends - - - - - f3ff7cb1 by David Binder at 2023-03-08T01:24:17-05:00 Remove utils/hpc subdirectory and its contents - - - - - cf98e286 by David Binder at 2023-03-08T01:24:17-05:00 Add git submodule for utils/hpc - - - - - 605fbbb2 by David Binder at 2023-03-08T01:24:18-05:00 Update commit for utils/hpc git submodule - - - - - 606793d4 by David Binder at 2023-03-08T01:24:18-05:00 Update commit for utils/hpc git submodule - - - - - 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). - - - - - 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 - - - - - 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 - - - - - 321d46d9 by Ben Gamari at 2023-03-08T15:02:30-05:00 rts: Drop redundant prototype - - - - - abb6070f by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Fix style - - - - - be278901 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Deduplicate assertion - - - - - 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. - - - - - 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. - - - - - 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. - - - - - 6283144f by Ben Gamari at 2023-03-08T15:02:30-05:00 rts/Sanity: Mark pinned_object_blocks - - - - - 9b528404 by Ben Gamari at 2023-03-08T15:02:30-05:00 rts/Sanity: Look at nonmoving saved_filled lists - - - - - 0edc5438 by Ben Gamari at 2023-03-08T15:02:30-05:00 Evac: Squash data race in eval_selector_chain - - - - - 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. - - - - - 532262b9 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Clarify comment - - - - - bd9cd84b by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Add missing no-op in busy-wait loop - - - - - 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. - - - - - 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. - - - - - ba7e7972 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Sanity check nonmoving large objects and compacts - - - - - 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. - - - - - 99d144d5 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Don't show occupancy if we didn't collect live words - - - - - 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. - - - - - 58e53bc4 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Assert state of swept segments - - - - - 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. - - - - - 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. - - - - - 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. - - - - - d4032690 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Post-sweep sanity checking - - - - - 0baa8752 by Ben Gamari at 2023-03-08T15:02:30-05:00 nonmoving: Avoid n_caps race - - - - - 5d3232ba by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Don't push if nonmoving collector isn't enabled - - - - - 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. - - - - - 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. - - - - - ce22a3e2 by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Allow pinned gen0 objects to be WEAK keys - - - - - 78746906 by Ben Gamari at 2023-03-08T15:02:31-05:00 rts: Reenable assertion - - - - - 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. - - - - - 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. - - - - - 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. - - - - - 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. - - - - - 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. - - - - - e84f7167 by Ben Gamari at 2023-03-08T15:02:31-05:00 testsuite: Skip some tests when sanity checking is enabled - - - - - 3ae0f368 by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Fix unregisterised build - - - - - 4eb9d06b by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Ensure that sanity checker accounts for saved_filled segments - - - - - 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. - - - - - 581e58ac by Ben Gamari at 2023-03-08T15:02:31-05:00 gitlab-ci: Add job bootstrapping with nonmoving GC - - - - - 487a8b58 by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Move allocator into new source file - - - - - 8f374139 by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Split out nonmovingAllocateGC - - - - - 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. - - - - - 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. - - - - - 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. - - - - - f1fd3ffb by Ben Gamari at 2023-03-08T15:02:31-05:00 testsuite: Mark ffi023 as broken due to #23089 - - - - - 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. - - - - - 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. - - - - - ba73a807 by Ben Gamari at 2023-03-08T15:02:31-05:00 nonmoving: Non-concurrent collection - - - - - 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. - - - - - 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 - - - - - 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 - - - - - ec2d93eb by Sebastian Graf at 2023-03-10T10:18:54-05:00 DmdAnal: Fix a panic on OPAQUE and trivial/PAP RHS (#22997) We should not panic in `add_demands` (now `set_lam_dmds`), because that code path is legimitely taken for OPAQUE PAP bindings, as in T22997. Fixes #22997. - - - - - 5b4628ae by Sylvain Henry at 2023-03-10T10:19:34-05:00 JS: remove dead code for old integer-gmp - - - - - bab23279 by Josh Meredith at 2023-03-10T23:24:49-05:00 JS: Fix implementation of MK_JSVAL - - - - - ec263a59 by Sebastian Graf at 2023-03-10T23:25:25-05:00 Simplify: Move `wantEtaExpansion` before expensive `do_eta_expand` check There is no need to run arity analysis and what not if we are not in a Simplifier phase that eta-expands or if we don't want to eta-expand the expression in the first place. Purely a refactoring with the goal of improving compiler perf. - - - - - 047e9d4f by Josh Meredith at 2023-03-13T03:56:03+00:00 JS: fix implementation of forceBool to use JS backend syntax - - - - - 559a4804 by Sebastian Graf at 2023-03-13T07:31:23-04:00 Simplifier: `countValArgs` should not count Type args (#23102) I observed miscompilations while working on !10088 caused by this. Fixes #23102. Metric Decrease: T10421 - - - - - 536d1f90 by Matthew Pickering at 2023-03-13T14:04:49+00:00 Bump Win32 to 2.13.4.0 Updates Win32 submodule - - - - - ee17001e by Ben Gamari at 2023-03-13T21:18:24-04:00 ghc-bignum: Drop redundant include-dirs field - - - - - c9c26cd6 by Teo Camarasu at 2023-03-16T12:17:50-04:00 Fix BCO creation setting caps when -j > -N * Remove calls to 'setNumCapabilities' in 'createBCOs' These calls exist to ensure that 'createBCOs' can benefit from parallelism. But this is not the right place to call `setNumCapabilities`. Furthermore the logic differs from that in the driver causing the capability count to be raised and lowered at each TH call if -j > -N. * Remove 'BCOOpts' No longer needed as it was only used to thread the job count down to `createBCOs` Resolves #23049 - - - - - 5ddbf5ed by Teo Camarasu at 2023-03-16T12:17:50-04:00 Add changelog entry for #23049 - - - - - 6e3ce9a4 by Ben Gamari at 2023-03-16T12:18:26-04:00 configure: Fix FIND_CXX_STD_LIB test on Darwin Annoyingly, Darwin's <cstddef> includes <version> and APFS is case-insensitive. Consequently, it will end up #including the `VERSION` file generated by the `configure` script on the second and subsequent runs of the `configure` script. See #23116. - - - - - 19d6d039 by sheaf at 2023-03-16T21:31:22+01:00 ghci: only keep the GlobalRdrEnv in ModInfo The datatype GHC.UI.Info.ModInfo used to store a ModuleInfo, which includes a TypeEnv. This can easily cause space leaks as we have no way of forcing everything in a type environment. In GHC, we only use the GlobalRdrEnv, which we can force completely. So we only store that instead of a fully-fledged ModuleInfo. - - - - - 73d07c6e by Torsten Schmits at 2023-03-17T14:36:49-04:00 Add structured error messages for GHC.Tc.Utils.Backpack Tracking ticket: #20119 MR: !10127 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. One occurrence, when handing a nested error from the interface loading machinery, was omitted. It will be handled by a subsequent changeset that addresses interface errors. - - - - - a13affce by Andrei Borzenkov at 2023-03-21T11:17:17-04:00 Rename () into Unit, (,,...,,) into Tuple<n> (#21294) This patch implements a part of GHC Proposal #475. The key change is in GHC.Tuple.Prim: - data () = () - data (a,b) = (a,b) - data (a,b,c) = (a,b,c) ... + data Unit = () + data Tuple2 a b = (a,b) + data Tuple3 a b c = (a,b,c) ... And the rest of the patch makes sure that Unit and Tuple<n> are pretty-printed as () and (,,...,,) in various contexts. Updates the haddock submodule. Co-authored-by: Vladislav Zavialov <vlad.z.4096@gmail.com> - - - - - 23642bf6 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00 docs: fix some wrongs in the eventlog format documentation - - - - - 90159773 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00 docs: explain the BLOCK_MARKER event - - - - - ab1c25e8 by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00 docs: add BlockedOnMVarRead thread status in eventlog encodings - - - - - 898afaef by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00 docs: add TASK_DELETE event in eventlog encodings - - - - - bb05b4cc by Adam Sandberg Ericsson at 2023-03-21T11:17:53-04:00 docs: add WALL_CLOCK_TIME event in eventlog encodings - - - - - eeea0343 by Torsten Schmits at 2023-03-21T11:18:34-04:00 Add structured error messages for GHC.Tc.Utils.Env Tracking ticket: #20119 MR: !10129 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - be1d4be8 by Andrew Lelechenko at 2023-03-21T11:19:13-04:00 Document pdep / pext primops - - - - - e8b4aac4 by Alex Mason at 2023-03-21T18:11:04-04:00 Allow LLVM backend to use HDoc for faster file generation. Also remove the MetaStmt constructor from LlvmStatement and places the annotations into the Store statement. Includes “Implement a workaround for -no-asm-shortcutting bug“ (https://gitlab.haskell.org/ghc/ghc/-/commit/2fda9e0df886cc551e2cd6b9c2a38419...) - - - - - ea24360d by Luite Stegeman at 2023-03-21T18:11:44-04:00 Compute LambdaFormInfo when using JavaScript backend. CmmCgInfos is needed to write interface files, but the JavaScript backend does not generate it, causing "Name without LFInfo" warnings. This patch adds a conservative but always correct CmmCgInfos when the JavaScript backend is used. Fixes #23053 - - - - - 926ad6de by Simon Peyton Jones at 2023-03-22T01:03:08-04:00 Be more careful about quantification This MR is driven by #23051. It does several things: * It is guided by the generalisation plan described in #20686. But it is still far from a complete implementation of that plan. * Add Note [Inferred type with escaping kind] to GHC.Tc.Gen.Bind. This explains that we don't (yet, pending #20686) directly prevent generalising over escaping kinds. * In `GHC.Tc.Utils.TcMType.defaultTyVar` we default RuntimeRep and Multiplicity variables, beause we don't want to quantify over them. We want to do the same for a Concrete tyvar, but there is nothing sensible to default it to (unless it has kind RuntimeRep, in which case it'll be caught by an earlier case). So we promote instead. * Pure refactoring in GHC.Tc.Solver: * Rename decideMonoTyVars to decidePromotedTyVars, since that's what it does. * Move the actual promotion of the tyvars-to-promote from `defaultTyVarsAndSimplify` to `decidePromotedTyVars`. This is a no-op; just tidies up the code. E.g then we don't need to return the promoted tyvars from `decidePromotedTyVars`. * A little refactoring in `defaultTyVarsAndSimplify`, but no change in behaviour. * When making a TauTv unification variable into a ConcreteTv (in GHC.Tc.Utils.Concrete.makeTypeConcrete), preserve the occ-name of the type variable. This just improves error messages. * Kill off dead code: GHC.Tc.Utils.TcMType.newConcreteHole - - - - - 0ab0cc11 by Sylvain Henry at 2023-03-22T01:03:48-04:00 Testsuite: use appropriate predicate for ManyUbxSums test (#22576) - - - - - 048c881e by romes at 2023-03-22T01:04:24-04:00 fix: Incorrect @since annotations in GHC.TypeError Fixes #23128 - - - - - a1528b68 by Sylvain Henry at 2023-03-22T01:05:04-04:00 Testsuite: use req_interp predicate for T16318 (#22370) - - - - - ad765b6f by Sylvain Henry at 2023-03-22T01:05:04-04:00 Testsuite: use req_interp predicate for T20214 - - - - - e0b8eaf3 by Simon Peyton Jones at 2023-03-22T09:50:13+00:00 Refactor the constraint solver pipeline The big change is to put the entire type-equality solver into GHC.Tc.Solver.Equality, rather than scattering it over Canonical and Interact. Other changes * EqCt becomes its own data type, a bit like QCInst. This is great because EqualCtList is then just [EqCt] * New module GHC.Tc.Solver.Dict has come of the class-contraint solver. In due course it will be all. One step at a time. This MR is intended to have zero change in behaviour: it is a pure refactor. It opens the way to subsequent tidying up, we believe. - - - - - cedf9a3b by Torsten Schmits at 2023-03-22T15:31:18-04:00 Add structured error messages for GHC.Tc.Utils.TcMType Tracking ticket: #20119 MR: !10138 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 30d45e97 by Sylvain Henry at 2023-03-22T15:32:01-04:00 Testsuite: use js_skip for T2615 (#22374) - - - - - 8c98deba by Armando Ramirez at 2023-03-23T09:19:32-04:00 Optimized Foldable methods for Data.Functor.Compose Explicitly define length, elem, etc. in Foldable instance for Data.Functor.Compose Implementation of https://github.com/haskell/core-libraries-committee/issues/57 - - - - - bc066108 by Armando Ramirez at 2023-03-23T09:19:32-04:00 Additional optimized versions - - - - - 80fce576 by Andrew Lelechenko at 2023-03-23T09:19:32-04:00 Simplify minimum/maximum in instance Foldable (Compose f g) - - - - - 8cb88a5a by Andrew Lelechenko at 2023-03-23T09:19:32-04:00 Update changelog to mention changes to instance Foldable (Compose f g) - - - - - e1c8c41d by Torsten Schmits at 2023-03-23T09:20:13-04:00 Add structured error messages for GHC.Tc.TyCl.PatSyn Tracking ticket: #20117 MR: !10158 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - f932c589 by Adam Gundry at 2023-03-24T02:36:09-04:00 Allow WARNING pragmas to be controlled with custom categories Closes #17209. This implements GHC Proposal 541, allowing a WARNING pragma to be annotated with a category like so: {-# WARNING in "x-partial" head "This function is undefined on empty lists." #-} The user can then enable, disable and set the severity of such warnings using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on. There is a new warning group `-Wextended-warnings` containing all these warnings. Warnings without a category are treated as if the category was `deprecations`, and are (still) controlled by the flags `-Wdeprecations` and `-Wwarnings-deprecations`. Updates Haddock submodule. - - - - - 0426515b by Adam Gundry at 2023-03-24T02:36:09-04:00 Move mention of warning groups change to 9.8.1 release notes - - - - - b8d783d2 by Ben Gamari at 2023-03-24T02:36:45-04:00 nativeGen/AArch64: Fix bitmask immediate predicate Previously the predicate for determining whether a logical instruction operand could be encoded as a bitmask immediate was far too conservative. This meant that, e.g., pointer untagged required five instructions whereas it should only require one. Fixes #23030. - - - - - 46120bb6 by Joachim Breitner at 2023-03-24T13:09:43-04:00 User's guide: Improve docs for -Wall previously it would list the warnings _not_ enabled by -Wall. That’s unnecessary round-about and was out of date. So let's just name the relevant warnings (based on `compiler/GHC/Driver/Flags.hs`). - - - - - 509d1f11 by Ben Gamari at 2023-03-24T13:10:20-04:00 codeGen/tsan: Disable instrumentation of unaligned stores There is some disagreement regarding the prototype of `__tsan_unaligned_write` (specifically whether it takes just the written address, or the address and the value as an argument). Moreover, I have observed crashes which appear to be due to it. Disable instrumentation of unaligned stores as a temporary mitigation. Fixes #23096. - - - - - 6a73655f by Li-yao Xia at 2023-03-25T00:02:44-04:00 base: Document GHC versions associated with past base versions in the changelog - - - - - 43bd7694 by Teo Camarasu at 2023-03-25T00:03:24-04:00 Add regression test for #17574 This test currently fails in the nonmoving way - - - - - f2d56bf7 by Teo Camarasu at 2023-03-25T00:03:24-04:00 fix: account for large and compact object stats with nonmoving gc Make sure that we keep track of the size of large and compact objects that have been moved onto the nonmoving heap. We keep track of their size and add it to the amount of live bytes in nonmoving segments to get the total size of the live nonmoving heap. Resolves #17574 - - - - - 7131b705 by David Feuer at 2023-03-25T00:04:04-04:00 Modify ThreadId documentation and comments For a long time, `GHC.Conc.Sync` has said ```haskell -- ToDo: data ThreadId = ThreadId (Weak ThreadId#) -- But since ThreadId# is unlifted, the Weak type must use open -- type variables. ``` We are now actually capable of using `Weak# ThreadId#`, but the world has moved on. To support the `Show` and `Ord` instances, we'd need to store the thread ID number in the `ThreadId`. And it seems very difficult to continue to support `threadStatus` in that regime, since it needs to be able to explain how threads died. In addition, garbage collection of weak references can be quite expensive, and it would be hard to evaluate the cost over he whole ecosystem. As discussed in [this CLC issue](https://github.com/haskell/core-libraries-committee/issues/125), it doesn't seem very likely that we'll actually switch to weak references here. - - - - - c421bbbb by Ben Gamari at 2023-03-25T00:04:41-04:00 rts: Fix barriers of IND and IND_STATIC Previously IND and IND_STATIC lacked the acquire barriers enjoyed by BLACKHOLE. As noted in the (now updated) Note [Heap memory barriers], this barrier is critical to ensure that the indirectee is visible to the entering core. Fixes #22872. - - - - - 62fa7faa by Andrew Lelechenko at 2023-03-25T00:05:22-04:00 Improve documentation of atomicModifyMutVar2# - - - - - b2d14d0b by Cheng Shao at 2023-03-25T03:46:43-04:00 rts: use performBlockingMajorGC in hs_perform_gc and fix ffi023 This patch does a few things: - Add the missing RtsSymbols.c entry of performBlockingMajorGC - Make hs_perform_gc call performBlockingMajorGC, which restores previous behavior - Use hs_perform_gc in ffi023 - Remove rts_clearMemory() call in ffi023, it now works again in some test ways previously marked as broken. Fixes #23089 - - - - - d9ae24ad by Cheng Shao at 2023-03-25T03:46:44-04:00 testsuite: add the rts_clearMemory test case This patch adds a standalone test case for rts_clearMemory that mimics how it's typically used by wasm backend users and ensures this RTS API isn't broken by future RTS refactorings. Fixes #23901. - - - - - 80729d96 by Andrew Lelechenko at 2023-03-25T03:47:22-04:00 Improve documentation for resizing of byte arrays - - - - - c6ec4cd1 by Ben Gamari at 2023-03-25T20:23:47-04:00 rts: Don't rely on EXTERN_INLINE for slop-zeroing logic Previously we relied on calling EXTERN_INLINE functions defined in ClosureMacros.h from Cmm to zero slop. However, as far as I can tell, this is no longer safe to do in C99 as EXTERN_INLINE definitions may be emitted in each compilation unit. Fix this by explicitly declaring a new set of non-inline functions in ZeroSlop.c which can be called from Cmm and marking the ClosureMacros.h definitions as INLINE_HEADER. In the future we should try to eliminate EXTERN_INLINE. - - - - - c32abd4b by Ben Gamari at 2023-03-25T20:23:48-04:00 rts: Fix capability-count check in zeroSlop Previously `zeroSlop` examined `RtsFlags` to determine whether the program was single-threaded. This is wrong; a program may be started with `+RTS -N1` yet the process may later increase the capability count with `setNumCapabilities`. This lead to quite subtle and rare crashes. Fixes #23088. - - - - - 656d4cb3 by Ryan Scott at 2023-03-25T20:24:23-04:00 Add Eq/Ord instances for SSymbol, SChar, and SNat This implements [CLC proposal #148](https://github.com/haskell/core-libraries-committee/issues/148). - - - - - 4f93de88 by David Feuer at 2023-03-26T15:33:02-04:00 Update and expand atomic modification Haddocks * The documentation for `atomicModifyIORef` and `atomicModifyIORef'` were incomplete, and the documentation for `atomicModifyIORef` was out of date. Update and expand. * Remove a useless lazy pattern match in the definition of `atomicModifyIORef`. The pair it claims to match lazily was already forced by `atomicModifyIORef2`. - - - - - e1fb56b2 by David Feuer at 2023-03-26T15:33:41-04:00 Document the constructor name for lists Derived `Data` instances use raw infix constructor names when applicable. The `Data.Data [a]` instance, if derived, would have a constructor name of `":"`. However, it actually uses constructor name `"(:)"`. Document this peculiarity. See https://github.com/haskell/core-libraries-committee/issues/147 - - - - - c1f755c4 by Simon Peyton Jones at 2023-03-27T22:09:41+01:00 Make exprIsConApp_maybe a bit cleverer Addresses #23159. See Note Note [Exploit occ-info in exprIsConApp_maybe] in GHC.Core.SimpleOpt. Compile times go down very slightly, but always go down, never up. Good! Metrics: compile_time/bytes allocated ------------------------------------------------ CoOpt_Singletons(normal) -1.8% T15703(normal) -1.2% GOOD geo. mean -0.1% minimum -1.8% maximum +0.0% Metric Decrease: CoOpt_Singletons T15703 - - - - - 76bb4c58 by Ryan Scott at 2023-03-28T08:12:08-04:00 Add COMPLETE pragmas to TypeRep, SSymbol, SChar, and SNat This implements [CLC proposal #149](https://github.com/haskell/core-libraries-committee/issues/149). - - - - - 3f374399 by sheaf at 2023-03-29T13:57:33+02:00 Handle records in the renamer This patch moves the field-based logic for disambiguating record updates to the renamer. The type-directed logic, scheduled for removal, remains in the typechecker. To do this properly (and fix the myriad of bugs surrounding the treatment of duplicate record fields), we took the following main steps: 1. Create GREInfo, a renamer-level equivalent to TyThing which stores information pertinent to the renamer. This allows us to uniformly treat imported and local Names in the renamer, as described in Note [GREInfo]. 2. Remove GreName. Instead of a GlobalRdrElt storing GreNames, which distinguished between normal names and field names, we now store simple Names in GlobalRdrElt, along with the new GREInfo information which allows us to recover the FieldLabel for record fields. 3. Add namespacing for record fields, within the OccNames themselves. This allows us to remove the mangling of duplicate field selectors. This change ensures we don't print mangled names to the user in error messages, and allows us to handle duplicate record fields in Template Haskell. 4. Move record disambiguation to the renamer, and operate on the level of data constructors instead, to handle #21443. The error message text for ambiguous record updates has also been changed to reflect that type-directed disambiguation is on the way out. (3) means that OccEnv is now a bit more complex: we first key on the textual name, which gives an inner map keyed on NameSpace: OccEnv a ~ FastStringEnv (UniqFM NameSpace a) Note that this change, along with (2), both increase the memory residency of GlobalRdrEnv = OccEnv [GlobalRdrElt], which causes a few tests to regress somewhat in compile-time allocation. Even though (3) simplified a lot of code (in particular the treatment of field selectors within Template Haskell and in error messages), it came with one important wrinkle: in the situation of -- M.hs-boot module M where { data A; foo :: A -> Int } -- M.hs module M where { data A = MkA { foo :: Int } } we have that M.hs-boot exports a variable foo, which is supposed to match with the record field foo that M exports. To solve this issue, we add a new impedance-matching binding to M foo{var} = foo{fld} This mimics the logic that existed already for impedance-binding DFunIds, but getting it right was a bit tricky. See Note [Record field impedance matching] in GHC.Tc.Module. We also needed to be careful to avoid introducing space leaks in GHCi. So we dehydrate the GlobalRdrEnv before storing it anywhere, e.g. in ModIface. This means stubbing out all the GREInfo fields, with the function forceGlobalRdrEnv. When we read it back in, we rehydrate with rehydrateGlobalRdrEnv. This robustly avoids any space leaks caused by retaining old type environments. Fixes #13352 #14848 #17381 #17551 #19664 #21443 #21444 #21720 #21898 #21946 #21959 #22125 #22160 #23010 #23062 #23063 Updates haddock submodule ------------------------- Metric Increase: MultiComponentModules MultiLayerModules MultiLayerModulesDefsGhci MultiLayerModulesNoCode T13701 T14697 hard_hole_fits ------------------------- - - - - - 4f1940f0 by sheaf at 2023-03-29T13:57:33+02:00 Avoid repeatedly shadowing in shadowNames This commit refactors GHC.Type.Name.Reader.shadowNames to first accumulate all the shadowing arising from the introduction of a new set of GREs, and then applies all the shadowing to the old GlobalRdrEnv in one go. - - - - - d246049c by sheaf at 2023-03-29T13:57:34+02:00 igre_prompt_env: discard "only-qualified" names We were unnecessarily carrying around names only available qualified in igre_prompt_env, violating the icReaderEnv invariant. We now get rid of these, as they aren't needed for the shadowing computation that igre_prompt_env exists for. Fixes #23177 ------------------------- Metric Decrease: T14052 T14052Type ------------------------- - - - - - 41a572f6 by Matthew Pickering at 2023-03-29T16:17:21-04:00 hadrian: Fix path to HpcParser.y The source for this project has been moved into a src/ folder so we also need to update this path. Fixes #23187 - - - - - b159e0e9 by doyougnu at 2023-03-30T01:40:08-04:00 js: split JMacro into JS eDSL and JS syntax This commit: Splits JExpr and JStat into two nearly identical DSLs: - GHC.JS.Syntax is the JMacro based DSL without unsaturation, i.e., a value cannot be unsaturated, or, a value of this DSL is a witness that a value of GHC.JS.Unsat has been saturated - GHC.JS.Unsat is the JMacro DSL from GHCJS with Unsaturation. Then all binary and outputable instances are changed to use GHC.JS.Syntax. This moves us closer to closing out #22736 and #22352. See #22736 for roadmap. ------------------------- Metric Increase: CoOpt_Read LargeRecord ManyAlternatives PmSeriesS PmSeriesT PmSeriesV T10421 T10858 T11195 T11374 T11822 T12227 T12707 T13035 T13253 T13253-spj T13379 T14683 T15164 T15703 T16577 T17096 T17516 T17836 T18140 T18282 T18304 T18478 T18698a T18698b T18923 T1969 T19695 T20049 T21839c T3064 T4801 T5321FD T5321Fun T5631 T5642 T783 T9198 T9233 T9630 TcPlugin_RewritePerf WWRec ------------------------- - - - - - f4f1f14f by Sylvain Henry at 2023-03-30T01:40:49-04:00 ghc-heap: remove wrong Addr# coercion (#23181) Conversion from Addr# to I# isn't correct with the JS backend. Also used the opportunity to reenable 64-bit Word/Int tests - - - - - a5360490 by Ben Gamari at 2023-03-30T01:41:25-04:00 testsuite: Fix racing prints in T21465 As noted in #23155, we previously failed to add flushes necessary to ensure predictable output. Fixes #23155. - - - - - 98b5cf67 by Matthew Pickering at 2023-03-30T09:58:40+01:00 Revert "ghc-heap: remove wrong Addr# coercion (#23181)" This reverts commit f4f1f14f8009c3c120b8b963ec130cbbc774ec02. This fails to build with GHC-9.2 as a boot compiler. See #23195 for tracking this issue. - - - - - 61a2dfaa by Andrew Lelechenko at 2023-03-30T14:35:57-04:00 Add {-# WARNING #-} to Data.List.{head,tail} - - - - - 8f15c47c by Andrew Lelechenko at 2023-03-30T14:35:57-04:00 Fixes to accomodate Data.List.{head,tail} with {-# WARNING #-} - - - - - 7c7dbade by Andrew Lelechenko at 2023-03-30T14:35:57-04:00 Bump submodules - - - - - d2d8251b by Andrew Lelechenko at 2023-03-30T14:35:57-04:00 Fix tests - - - - - 3d38dcb6 by sheaf at 2023-03-30T14:35:57-04:00 Proxies for head and tail: review suggestions - - - - - 930edcfd by sheaf at 2023-03-30T14:36:33-04:00 docs: move RecordUpd changelog entry to 9.8 This was accidentally included in the 9.6 changelog instead of the 9.6 changelog. - - - - - 6f885e65 by sheaf at 2023-03-30T14:37:09-04:00 Add LANGUAGE GADTs to GHC.Rename.Env We need to enable this extension for the file to compile with ghc 9.2, as we are pattern matching on a GADT and this required the GADT extension to be enabled until 9.4. - - - - - 6d6a37a8 by Cheng Shao at 2023-03-30T18:42:56+00:00 ci: make lint-ci-config job fast again We don't pin our nixpkgs revision and tracks the default nixpkgs-unstable channel anyway. Instead of using haskell.packages.ghc924, we should be using haskell.packages.ghc92 to maximize the binary cache hit rate and make lint-ci-config job fast again. Also bumps the nix docker image to the latest revision. - - - - - ef1548c4 by Cheng Shao at 2023-03-30T18:42:56+00:00 ci: ensure that all non-i386 pipelines do parallel xz compression We can safely enable parallel xz compression for non-i386 pipelines. However, previously we didn't export XZ_OPT, so the xz process won't see it if XZ_OPT hasn't already been set in the current job. - - - - - 20432d16 by Cheng Shao at 2023-03-30T18:42:56+00:00 ci: unset CROSS_EMULATOR for js job - - - - - 4a24dbbe by Cheng Shao at 2023-03-30T18:42:56+00:00 ci: fix lint-testsuite job The list_broken make target will transitively depend on the calibrate.out target, which used STAGE1_GHC instead of TEST_HC. It really should be TEST_HC since that's what get passed in the gitlab CI config. - - - - - cea56ccc by Cheng Shao at 2023-03-30T18:42:56+00:00 ci: use alpine3_17-wasm image for wasm jobs Bump the ci-images dependency and use the new alpine3_17-wasm docker image for wasm jobs. - - - - - 79d0cb32 by Ben Gamari at 2023-03-30T18:43:53+00:00 testsuite/driver: Add basic support for testing cross-compilers - - - - - e7392b4e by Ben Gamari at 2023-03-30T18:43:53+00:00 testsuite/driver: Normalize away differences in ghc executable name - - - - - ee160d06 by Ben Gamari at 2023-03-30T18:43:53+00:00 hadrian: Pass CROSS_EMULATOR to runtests.py - - - - - 30c84511 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: don't add optllvm way for wasm32 - - - - - f1beee36 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: normalize the .wasm extension - - - - - a984a103 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: strip the cross ghc prefix in output and error message - - - - - f7478d95 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: handle target executable extension - - - - - 8fe8b653 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: mypy typing error fixes This patch fixes some mypy typing errors which weren't caught in previous linting jobs. - - - - - 0149f32f by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: use context variable instead of thread-local variable This patch changes a thread-local variable to context variable instead, which works as intended when the testsuite transitions to use asyncio & coroutines instead of multi-threading to concurrently run test cases. Note that this also raises the minimum Python version to 3.7. - - - - - ea853ff0 by Cheng Shao at 2023-03-30T18:43:53+00:00 testsuite: asyncify the testsuite driver This patch refactors the testsuite driver, gets rid of multi-threading logic for running test cases concurrently, and uses asyncio & coroutines instead. This is not yak shaving for its own sake; the previous multi-threading logic is prone to livelock/deadlock conditions for some reason, even if the total number of threads is bounded to a thread pool's capacity. The asyncify change is an internal implementation detail of the testsuite driver and does not impact most GHC maintainers out there. The patch does not touch the .T files, test cases can be added/modified the exact same way as before. - - - - - 0077cb22 by Matthew Pickering at 2023-03-31T21:28:28-04:00 Add test for T23184 There was an outright bug, which Simon fixed in July 2021, as a little side-fix on a complicated patch: ``` commit 6656f0165a30fc2a22208532ba384fc8e2f11b46 Author: Simon Peyton Jones <simonpj@microsoft.com> Date: Fri Jul 23 23:57:01 2021 +0100 A bunch of changes related to eta reduction This is a large collection of changes all relating to eta reduction, originally triggered by #18993, but there followed a long saga. Specifics: ...lots of lines omitted... Other incidental changes * Fix a fairly long-standing outright bug in the ApplyToVal case of GHC.Core.Opt.Simplify.mkDupableContWithDmds. I was failing to take the tail of 'dmds' in the recursive call, which meant the demands were All Wrong. I have no idea why this has not caused problems before now. ``` Note this "Fix a fairly longstanding outright bug". This is the specific fix ``` @@ -3552,8 +3556,8 @@ mkDupableContWithDmds env dmds -- let a = ...arg... -- in [...hole...] a -- NB: sc_dup /= OkToDup; that is caught earlier by contIsDupable - do { let (dmd:_) = dmds -- Never fails - ; (floats1, cont') <- mkDupableContWithDmds env dmds cont + do { let (dmd:cont_dmds) = dmds -- Never fails + ; (floats1, cont') <- mkDupableContWithDmds env cont_dmds cont ; let env' = env `setInScopeFromF` floats1 ; (_, se', arg') <- simplArg env' dup se arg ; (let_floats2, arg'') <- makeTrivial env NotTopLevel dmd (fsLit "karg") arg' ``` Ticket #23184 is a report of the bug that this diff fixes. - - - - - 62d25071 by mangoiv at 2023-04-01T04:20:01-04:00 [feat] make ($) representation polymorphic - this change was approved by the CLC in [1] following a CLC proposal [2] - make ($) representation polymorphic (adjust the type signature) - change ($) implementation to allow additional polymorphism - adjust the haddock of ($) to reflect these changes - add additional documentation to document these changes - add changelog entry - adjust tests (move now succeeding tests and adjust stdout of some tests) [1] https://github.com/haskell/core-libraries-committee/issues/132#issuecomment-... [2] https://github.com/haskell/core-libraries-committee/issues/132 - - - - - 77c33fb9 by Artem Pelenitsyn at 2023-04-01T04:20:41-04:00 User Guide: update copyright year: 2020->2023 - - - - - 3b5be05a by doyougnu at 2023-04-01T09:42:31-04:00 driver: Unit State Data.Map -> GHC.Unique.UniqMap In pursuit of #22426. The driver and unit state are major contributors. This commit also bumps the haddock submodule to reflect the API changes in UniqMap. ------------------------- Metric Decrease: MultiComponentModules MultiComponentModulesRecomp T10421 T10547 T12150 T12234 T12425 T13035 T16875 T18140 T18304 T18698a T18698b T18923 T20049 T5837 T6048 T9198 ------------------------- - - - - - a84fba6e by Torsten Schmits at 2023-04-01T09:43:12-04:00 Add structured error messages for GHC.Tc.TyCl Tracking ticket: #20117 MR: !10183 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 6e2eb275 by doyougnu at 2023-04-01T18:27:56-04:00 JS: Linker: use saturated JExpr Follow on to MR!10142 in pursuit of #22736 - - - - - 3da69346 by sheaf at 2023-04-01T18:28:37-04:00 Improve haddocks of template-haskell Con datatype This adds a bit more information, in particular about the lists of constructors in the GadtC and RecGadtC cases. - - - - - 3b7bbb39 by sheaf at 2023-04-01T18:28:37-04:00 TH: revert changes to GadtC & RecGadtC Commit 3f374399 included a breaking-change to the template-haskell library when it made the GadtC and RecGadtC constructors take non-empty lists of names. As this has the potential to break many users' packages, we decided to revert these changes for now. - - - - - f60f6110 by Andrew Lelechenko at 2023-04-02T18:59:30-04:00 Rework documentation for data Char - - - - - 43ebd5dc by Andrew Lelechenko at 2023-04-02T19:00:09-04:00 cmm: implement parsing of MO_AtomicRMW from hand-written CMM files Fixes #23206 - - - - - ab9cd52d by Sylvain Henry at 2023-04-03T08:15:21-04:00 ghc-heap: remove wrong Addr# coercion (#23181) Conversion from Addr# to I# isn't correct with the JS backend. - - - - - 2b2afff3 by Matthew Pickering at 2023-04-03T08:15:58-04:00 hadrian: Update bootstrap plans for 9.2.6, 9.2.7, 9.4.4, 9.4.5, 9.6.1 Also fixes the ./generate_bootstrap_plans script which was recently broken We can hopefully drop the 9.2 plans soon but they still work so kept them around for now. - - - - - c2605e25 by Matthew Pickering at 2023-04-03T08:15:58-04:00 ci: Add job to test 9.6 bootstrapping - - - - - 53e4d513 by Krzysztof Gogolewski at 2023-04-03T08:16:35-04:00 hadrian: Improve option parsing Several options in Hadrian had their argument marked as optional (`OptArg`), but if the argument wasn't there they were just giving an error. It's more idiomatic to mark the argument as required instead; the code uses less Maybes, the parser can enforce that the argument is present, --help gives better output. - - - - - a8e36892 by Sylvain Henry at 2023-04-03T08:17:16-04:00 JS: fix issues with FD api support - Add missing implementations for fcntl_read/write/lock - Fix fdGetMode These were found while implementing TH in !9779. These functions must be used somehow by the external interpreter code. - - - - - 8b092910 by Haskell-mouse at 2023-04-03T19:31:26-04:00 Convert diagnostics in GHC.Rename.HsType to proper TcRnMessage I've turned all occurrences of TcRnUnknownMessage in GHC.Rename.HsType module into a proper TcRnMessage. Instead, these TcRnMessage messages were introduced: TcRnDataKindsError TcRnUnusedQuantifiedTypeVar TcRnIllegalKindSignature TcRnUnexpectedPatSigType TcRnSectionPrecedenceError TcRnPrecedenceParsingError TcRnIllegalKind TcRnNegativeNumTypeLiteral TcRnUnexpectedKindVar TcRnBindMultipleVariables TcRnBindVarAlreadyInScope - - - - - 220a7a48 by Krzysztof Gogolewski at 2023-04-03T19:32:02-04:00 Fixes around unsafeCoerce# 1. `unsafeCoerce#` was documented in `GHC.Prim`. But since the overhaul in 74ad75e87317, `unsafeCoerce#` is no longer defined there. I've combined the documentation in `GHC.Prim` with the `Unsafe.Coerce` module. 2. The documentation of `unsafeCoerce#` stated that you should not cast a function to an algebraic type, even if you later cast it back before applying it. But ghci was doing that type of cast, as can be seen with 'ghci -ddump-ds' and typing 'x = not'. I've changed it to use Any following the documentation. - - - - - 9095e297 by Matthew Craven at 2023-04-04T01:04:10-04:00 Add a few more memcpy-ish primops * copyMutableByteArrayNonOverlapping# * copyAddrToAddr# * copyAddrToAddrNonOverlapping# * setAddrRange# The implementations of copyBytes, moveBytes, and fillBytes in base:Foreign.Marshal.Utils now use these new primops, which can cause us to work a bit harder generating code for them, resulting in the metric increase in T21839c observed by CI on some architectures. But in exchange, we get better code! Metric Increase: T21839c - - - - - f7da530c by Matthew Craven at 2023-04-04T01:04:10-04:00 StgToCmm: Upgrade -fcheck-prim-bounds behavior Fixes #21054. Additionally, we can now check for range overlap when generating Cmm for primops that use memcpy internally. - - - - - cd00e321 by sheaf at 2023-04-04T01:04:50-04:00 Relax assertion in varToRecFieldOcc When using Template Haskell, it is possible to re-parent a field OccName belonging to one data constructor to another data constructor. The lsp-types package did this in order to "extend" a data constructor with additional fields. This ran into an assertion in 'varToRecFieldOcc'. This assertion can simply be relaxed, as the resulting splices are perfectly sound. Fixes #23220 - - - - - eed0d930 by Sylvain Henry at 2023-04-04T11:09:15-04:00 GHCi.RemoteTypes: fix doc and avoid unsafeCoerce (#23201) - - - - - 071139c3 by Ryan Scott at 2023-04-04T11:09:51-04:00 Make INLINE pragmas for pattern synonyms work with TH Previously, the code for converting `INLINE <name>` pragmas from TH splices used `vNameN`, which assumed that `<name>` must live in the variable namespace. Pattern synonyms, on the other hand, live in the constructor namespace. I've fixed the issue by switching to `vcNameN` instead, which works for both the variable and constructor namespaces. Fixes #23203. - - - - - 7c16f3be by Krzysztof Gogolewski at 2023-04-04T17:13:00-04:00 Fix unification with oversaturated type families unify_ty was incorrectly saying that F x y ~ T x are surely apart, where F x y is an oversaturated type family and T x is a tyconapp. As a result, the simplifier dropped a live case alternative (#23134). - - - - - c165f079 by sheaf at 2023-04-04T17:13:40-04:00 Add testcase for #23192 This issue around solving of constraints arising from superclass expansion using other constraints also borned from superclass expansion was the topic of commit aed1974e. That commit made sure we don't emit a "redundant constraint" warning in a situation in which removing the constraint would cause errors. Fixes #23192 - - - - - d1bb16ed by Ben Gamari at 2023-04-06T03:40:45-04:00 nonmoving: Disable slop-zeroing As noted in #23170, the nonmoving GC can race with a mutator zeroing the slop of an updated thunk (in much the same way that two mutators would race). Consequently, we must disable slop-zeroing when the nonmoving GC is in use. Closes #23170 - - - - - 04b80850 by Brandon Chinn at 2023-04-06T03:41:21-04:00 Fix reverse flag for -Wunsupported-llvm-version - - - - - 0c990e13 by Pierre Le Marre at 2023-04-06T10:16:29+00:00 Add release note for GHC.Unicode refactor in base-4.18. Also merge CLC proposal 130 in base-4.19 with CLC proposal 59 in base-4.18 and add proper release date. - - - - - cbbfb283 by Alex Dixon at 2023-04-07T18:27:45-04:00 Improve documentation for ($) (#22963) - - - - - 5193c2b0 by Alex Dixon at 2023-04-07T18:27:45-04:00 Remove trailing whitespace from ($) commentary - - - - - b384523b by Sebastian Graf at 2023-04-07T18:27:45-04:00 Adjust wording wrt representation polymorphism of ($) - - - - - 6a788f0a by Torsten Schmits at 2023-04-07T22:29:28-04:00 Add structured error messages for GHC.Tc.TyCl.Utils Tracking ticket: #20117 MR: !10251 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 3ba77b36 by sheaf at 2023-04-07T22:30:07-04:00 Renamer: don't call addUsedGRE on an exact Name When looking up a record field in GHC.Rename.Env.lookupRecFieldOcc, we could end up calling addUsedGRE on an exact Name, which would then lead to a panic in the bestImport function: it would be incapable of processing a GRE which is not local but also not brought into scope by any imports (as it is referred to by its unique instead). Fixes #23240 - - - - - bc4795d2 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00 Add support for -debug in the testsuite Confusingly, GhcDebugged referred to GhcDebugAssertions. - - - - - b7474b57 by Krzysztof Gogolewski at 2023-04-11T19:24:54-04:00 Add missing cases in -Di prettyprinter Fixes #23142 - - - - - 6c392616 by Cheng Shao at 2023-04-11T19:25:31-04:00 compiler: make WasmCodeGenM an instance of MonadUnique - - - - - 05d26a65 by Cheng Shao at 2023-04-11T19:25:31-04:00 compiler: apply cmm node-splitting for wasm backend This patch applies cmm node-splitting for wasm32 NCG, which is required when handling irreducible CFGs. Fixes #23237. - - - - - f1892cc0 by Andrew Lelechenko at 2023-04-11T19:26:09-04:00 Set base 'maintainer' field to CLC - - - - - ecf22da3 by Simon Peyton Jones at 2023-04-11T19:26:45-04:00 Clarify a couple of Notes about 'nospec' - - - - - ebd8918b by Oleg Grenrus at 2023-04-12T12:32:57-04:00 Allow generation of TTH syntax with TH In other words allow generation of typed splices and brackets with Untyped Template Haskell. That is useful in cases where a library is build with TTH in mind, but we still want to generate some auxiliary declarations, where TTH cannot help us, but untyped TH can. Such example is e.g. `staged-sop` which works with TTH, but we would like to derive `Generic` declarations with TH. An alternative approach is to use `unsafeCodeCoerce`, but then the derived `Generic` instances would be type-checked only at use sites, i.e. much later. Also `-ddump-splices` output is quite ugly: user-written instances would use TTH brackets, not `unsafeCodeCoerce`. This commit doesn't allow generating of untyped template splices and brackets with untyped TH, as I don't know why one would want to do that (instead of merging the splices, e.g.) - - - - - 690d0225 by Rodrigo Mesquita at 2023-04-12T12:33:33-04:00 Add regression test for #23229 - - - - - 59321879 by Sylvain Henry at 2023-04-13T08:50:33-04:00 Add quotRem rules (#22152) case quotRemInt# x y of (# q, _ #) -> body ====> case quotInt# x y of q -> body case quotRemInt# x y of (# _, r #) -> body ====> case remInt# x y of r -> body - - - - - 4dd02122 by Sylvain Henry at 2023-04-13T08:50:33-04:00 Add quot folding rule (#22152) (x / l1) / l2 l1 and l2 /= 0 l1*l2 doesn't overflow ==> x / (l1 * l2) - - - - - 1148ac72 by Sylvain Henry at 2023-04-13T08:50:33-04:00 Make Int64/Word64 division ok for speculation too. Only when the divisor is definitely non-zero. - - - - - 8af401cc by Sylvain Henry at 2023-04-13T08:50:33-04:00 Make WordQuotRem2Op ok-for-speculation too - - - - - 27d2978e by Josh Meredith at 2023-04-13T08:51:09-04:00 Base/JS: GHC.JS.Foreign.Callback module (issue 23126) * Add the Callback module for "exporting" Haskell functions to be available to plain JavaScript code * Fix some primitives defined in GHC.JS.Prim * Add a JavaScript section to the user guide with instructions on how to use the JavaScript FFI, building up to using Callbacks to interact with the browser * Add tests for the JavaScript FFI and Callbacks - - - - - a34aa8da by Adam Sandberg Ericsson at 2023-04-14T04:17:52-04:00 rts: improve memory ordering and add some comments in the StablePtr implementation - - - - - d7a768a4 by Matthew Pickering at 2023-04-14T04:18:28-04:00 docs: Generate docs/index.html with version number * Generate docs/index.html to include the version of the ghc library * This also fixes the packageVersions interpolations which were - Missing an interpolation for `LIBRARY_ghc_VERSION` - Double quoting the version so that "9.7" was being inserted. Fixes #23121 - - - - - d48fbfea by Simon Peyton Jones at 2023-04-14T04:19:05-04:00 Stop if type constructors have kind errors Otherwise we get knock-on errors, such as #23252. This makes GHC fail a bit sooner, and I have not attempted to add recovery code, to add a fake TyCon place of the erroneous one, in an attempt to get more type errors in one pass. We could do that (perhaps) if there was a call for it. - - - - - 2371d6b2 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00 Major refactor in the handling of equality constraints This MR substantially refactors the way in which the constraint solver deals with equality constraints. The big thing is: * Intead of a pipeline in which we /first/ canonicalise and /then/ interact (the latter including performing unification) the two steps are more closely integreated into one. That avoids the current rather indirect communication between the two steps. The proximate cause for this refactoring is fixing #22194, which involve solving [W] alpha[2] ~ Maybe (F beta[4]) by doing this: alpha[2] := Maybe delta[2] [W] delta[2] ~ F beta[4] That is, we don't promote beta[4]! This is very like introducing a cycle breaker, and was very awkward to do before, but now it is all nice. See GHC.Tc.Utils.Unify Note [Promotion and level-checking] and Note [Family applications in canonical constraints]. The big change is this: * Several canonicalisation checks (occurs-check, cycle-breaking, checking for concreteness) are combined into one new function: GHC.Tc.Utils.Unify.checkTyEqRhs This function is controlled by `TyEqFlags`, which says what to do for foralls, type families etc. * `canEqCanLHSFinish` now sees if unification is possible, and if so, actually does it: see `canEqCanLHSFinish_try_unification`. There are loads of smaller changes: * The on-the-fly unifier `GHC.Tc.Utils.Unify.unifyType` has a cheap-and-cheerful version of `checkTyEqRhs`, called `simpleUnifyCheck`. If `simpleUnifyCheck` succeeds, it can unify, otherwise it defers by emitting a constraint. This is simpler than before. * I simplified the swapping code in `GHC.Tc.Solver.Equality.canEqCanLHS`. Especially the nasty stuff involving `swap_for_occurs` and `canEqTyVarFunEq`. Much nicer now. See Note [Orienting TyVarLHS/TyFamLHS] Note [Orienting TyFamLHS/TyFamLHS] * Added `cteSkolemOccurs`, `cteConcrete`, and `cteCoercionHole` to the problems that can be discovered by `checkTyEqRhs`. * I fixed #23199 `pickQuantifiablePreds`, which actually allows GHC to to accept both cases in #22194 rather than rejecting both. Yet smaller: * Added a `synIsConcrete` flag to `SynonymTyCon` (alongside `synIsFamFree`) to reduce the need for synonym expansion when checking concreteness. Use it in `isConcreteType`. * Renamed `isConcrete` to `isConcreteType` * Defined `GHC.Core.TyCo.FVs.isInjectiveInType` as a more efficient way to find if a particular type variable is used injectively than finding all the injective variables. It is called in `GHC.Tc.Utils.Unify.definitely_poly`, which in turn is used quite a lot. * Moved `rewriterView` to `GHC.Core.Type`, so we can use it from the constraint solver. Fixes #22194, #23199 Compile times decrease by an average of 0.1%; but there is a 7.4% drop in compiler allocation on T15703. Metric Decrease: T15703 - - - - - 99b2734b by Simon Peyton Jones at 2023-04-14T20:01:02+02:00 Add some documentation about redundant constraints - - - - - 3f2d0eb8 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00 Improve partial signatures This MR fixes #23223. The changes are in two places: * GHC.Tc.Bind.checkMonomorphismRestriction See the new `Note [When the MR applies]` We now no longer stupidly attempt to apply the MR when the user specifies a context, e.g. f :: Eq a => _ -> _ * GHC.Tc.Solver.decideQuantification See rewritten `Note [Constraints in partial type signatures]` Fixing this bug apparently breaks three tests: * partial-sigs/should_compile/T11192 * partial-sigs/should_fail/Defaulting1MROff * partial-sigs/should_fail/T11122 However they are all symptoms of #23232, so I'm marking them as expect_broken(23232). I feel happy about this MR. Nice. - - - - - 23e2a8a0 by Simon Peyton Jones at 2023-04-14T20:01:02+02:00 Make approximateWC a bit cleverer This MR fixes #23224: making approximateWC more clever See the long `Note [ApproximateWC]` in GHC.Tc.Solver All this is delicate and ad-hoc -- but it /has/ to be: we are talking about inferring a type for a binding in the presence of GADTs, type families and whatnot: known difficult territory. We just try as hard as we can. - - - - - 2c040246 by Matthew Pickering at 2023-04-15T00:57:14-04:00 docs: Update template-haskell docs to use Code Q a rather than Q (TExp a) Since GHC Proposal #195, the type of [|| ... ||] has been Code Q a rather than Q (TExp a). The documentation in the `template-haskell` library wasn't updated to reflect this change. Fixes #23148 - - - - - 0da18eb7 by Krzysztof Gogolewski at 2023-04-15T14:35:53+02:00 Show an error when we cannot default a concrete tyvar Fixes #23153 - - - - - bad2f8b8 by sheaf at 2023-04-15T15:14:36+02:00 Handle ConcreteTvs in inferResultToType inferResultToType was discarding the ir_frr information, which meant some metavariables ended up being MetaTvs instead of ConcreteTvs. This function now creates new ConcreteTvs as necessary, instead of always creating MetaTvs. Fixes #23154 - - - - - 3b0ea480 by Simon Peyton Jones at 2023-04-16T18:12:20-04:00 Transfer DFunId_ness onto specialised bindings Whether a binding is a DFunId or not has consequences for the `-fdicts-strict` flag, essentially if we are doing demand analysis for a DFunId then `-fdicts-strict` does not apply because the constraint solver can create recursive groups of dictionaries. In #22549 this was fixed for the "normal" case, see Note [Do not strictify the argument dictionaries of a dfun]. However the loop still existed if the DFunId was being specialised. The problem was that the specialiser would specialise a DFunId and turn it into a VanillaId and so the demand analyser didn't know to apply special treatment to the binding anymore and the whole recursive group was optimised to bottom. The solution is to transfer over the DFunId-ness of the binding in the specialiser so that the demand analyser knows not to apply the `-fstrict-dicts`. Fixes #22549 - - - - - a1371ebb by Oleg Grenrus at 2023-04-16T18:12:59-04:00 Add import lists to few GHC.Driver.Session imports Related to https://gitlab.haskell.org/ghc/ghc/-/issues/23261. There are a lot of GHC.Driver.Session which only use DynFlags, but not the parsing code. - - - - - 51479ceb by Matthew Pickering at 2023-04-17T08:08:48-04:00 Account for special GHC.Prim import in warnUnusedPackages The GHC.Prim import is treated quite specially primarily because there isn't an interface file for GHC.Prim. Therefore we record separately in the ModSummary if it's imported or not so we don't go looking for it. This logic hasn't made it's way to `-Wunused-packages` so if you imported GHC.Prim then the warning would complain you didn't use `-package ghc-prim`. Fixes #23212 - - - - - 1532a8b2 by Simon Peyton Jones at 2023-04-17T08:09:24-04:00 Add regression test for #23199 - - - - - 0158c5f1 by Ryan Scott at 2023-04-17T18:43:27-04:00 validDerivPred: Reject exotic constraints in IrredPreds This brings the `IrredPred` case in sync with the treatment of `ClassPred`s as described in `Note [Valid 'deriving' predicate]` in `GHC.Tc.Validity`. Namely, we should reject `IrredPred`s that are inferred from `deriving` clauses whose arguments contain other type constructors, as described in `(VD2) Reject exotic constraints` of that Note. This has the nice property that `deriving` clauses whose inferred instance context mention `TypeError` will now emit the type error in the resulting error message, which better matches existing intuitions about how `TypeError` should work. While I was in town, I noticed that much of `Note [Valid 'deriving' predicate]` was duplicated in a separate `Note [Exotic derived instance contexts]` in `GHC.Tc.Deriv.Infer`. I decided to fold the latter Note into the former so that there is a single authority on describing the conditions under which an inferred `deriving` constraint can be considered valid. This changes the behavior of `deriving` in a way that existing code might break, so I have made a mention of this in the GHC User's Guide. It seems very, very unlikely that much code is relying on this strange behavior, however, and even if there is, there is a clear, backwards-compatible migration path using `StandaloneDeriving`. Fixes #22696. - - - - - 10364818 by Krzysztof Gogolewski at 2023-04-17T18:44:03-04:00 Misc cleanup - Use dedicated list functions - Make cloneBndrs and cloneRecIdBndrs monadic - Fix invalid haddock comments in libraries/base - - - - - 5e1d33d7 by Matthew Pickering at 2023-04-18T10:31:02-04:00 Convert interface file loading errors into proper diagnostics This patch converts all the errors to do with loading interface files into proper structured diagnostics. * DriverMessage: Sometimes in the driver we attempt to load an interface file so we embed the IfaceMessage into the DriverMessage. * TcRnMessage: Most the time we are loading interface files during typechecking, so we embed the IfaceMessage This patch also removes the TcRnInterfaceLookupError constructor which is superceded by the IfaceMessage, which is now structured compared to just storing an SDoc before. - - - - - df1a5811 by sheaf at 2023-04-18T10:31:43-04:00 Don't panic in ltPatersonSize The function GHC.Tc.Utils.TcType.ltPatersonSize would panic when it encountered a type family on the RHS, as usually these are not allowed (type families are not allowed on the RHS of class instances or of quantified constraints). However, it is possible to still encounter type families on the RHS after doing a bit of constraint solving, as seen in test case T23171. This could trigger the panic in the call to ltPatersonSize in GHC.Tc.Solver.Canonical.mk_strict_superclasses, which is involved in avoiding loopy superclass constraints. This patch simply changes ltPatersonSize to return "I don't know, because there's a type family involved" in these cases. Fixes #23171 - - - - - d442ac05 by Sylvain Henry at 2023-04-19T20:04:35-04:00 JS: fix thread-related primops - - - - - 7a96f90b by Bryan Richter at 2023-04-19T20:05:11-04:00 CI: Disable abi-test-nightly See #23269 - - - - - ab6c1d29 by Sylvain Henry at 2023-04-19T20:05:50-04:00 Testsuite: don't use obsolescent egrep (#22351) Recent egrep displays the following message, breaking golden tests: egrep: warning: egrep is obsolescent; using grep -E Switch to using "grep -E" instead - - - - - f15b0ce5 by Matthew Pickering at 2023-04-20T11:01:06-04:00 hadrian: Pass haddock file arguments in a response file In !10119 CI was failing on windows because the command line was too long. We can mitigate this by passing the file arguments to haddock in a response file. We can't easily pass all the arguments in a response file because the `+RTS` arguments can't be placed in the response file. Fixes #23273 - - - - - 7012ec2f by tocic at 2023-04-20T11:01:42-04:00 Fix doc typo in GHC.Read.readList - - - - - 5c873124 by sheaf at 2023-04-20T18:33:34-04:00 Implement -jsem: parallelism controlled by semaphores See https://github.com/ghc-proposals/ghc-proposals/pull/540/ for a complete description for the motivation for this feature. The `-jsem` option allows a build tool to pass a semaphore to GHC which GHC can use in order to control how much parallelism it requests. GHC itself acts as a client in the GHC jobserver protocol. ``` GHC Jobserver Protocol ~~~~~~~~~~~~~~~~~~~~~~ This proposal introduces the GHC Jobserver Protocol. This protocol allows a server to dynamically invoke many instances of a client process, while restricting all of those instances to use no more than <n> capabilities. This is achieved by coordination over a system semaphore (either a POSIX semaphore [6]_ in the case of Linux and Darwin, or a Win32 semaphore [7]_ in the case of Windows platforms). There are two kinds of participants in the GHC Jobserver protocol: - The *jobserver* creates a system semaphore with a certain number of available tokens. Each time the jobserver wants to spawn a new jobclient subprocess, it **must** first acquire a single token from the semaphore, before spawning the subprocess. This token **must** be released once the subprocess terminates. Once work is finished, the jobserver **must** destroy the semaphore it created. - A *jobclient* is a subprocess spawned by the jobserver or another jobclient. Each jobclient starts with one available token (its *implicit token*, which was acquired by the parent which spawned it), and can request more tokens through the Jobserver Protocol by waiting on the semaphore. Each time a jobclient wants to spawn a new jobclient subprocess, it **must** pass on a single token to the child jobclient. This token can either be the jobclient's implicit token, or another token which the jobclient acquired from the semaphore. Each jobclient **must** release exactly as many tokens as it has acquired from the semaphore (this does not include the implicit tokens). ``` Build tools such as cabal act as jobservers in the protocol and are responsibile for correctly creating, cleaning up and managing the semaphore. Adds a new submodule (semaphore-compat) for managing and interacting with semaphores in a cross-platform way. Fixes #19349 - - - - - 52d3e9b4 by Ben Gamari at 2023-04-20T18:34:11-04:00 rts: Initialize Array# header in listThreads# Previously the implementation of listThreads# failed to initialize the header of the created array, leading to various nastiness. Fixes #23071 - - - - - 1db30fe1 by Ben Gamari at 2023-04-20T18:34:11-04:00 testsuite: Add test for #23071 - - - - - dae514f9 by tocic at 2023-04-21T13:31:21-04:00 Fix doc typos in libraries/base/GHC - - - - - 113e21d7 by Sylvain Henry at 2023-04-21T13:32:01-04:00 Testsuite: replace some js_broken/js_skip predicates with req_c Using req_c is more precise. - - - - - 038bb031 by Krzysztof Gogolewski at 2023-04-21T18:03:04-04:00 Minor doc fixes - Add docs/index.html to .gitignore. It is created by ./hadrian/build docs, and it was the only file in Hadrian's templateRules not present in .gitignore. - Mention that MultiWayIf supports non-boolean guards - Remove documentation of optdll - removed in 2007, 763daed95 - Fix markdown syntax - - - - - e826cdb2 by amesgen at 2023-04-21T18:03:44-04:00 User's guide: DeepSubsumption is implied by Haskell{98,2010} - - - - - 499a1c20 by PHO at 2023-04-23T13:39:32-04:00 Implement executablePath for Solaris and make getBaseDir less platform-dependent Use base-4.17 executablePath when possible, and fall back on getExecutablePath when it's not available. The sole reason why getBaseDir had #ifdef's was apparently that getExecutablePath wasn't reliable, and we could reduce the number of CPP conditionals by making use of executablePath instead. Also export executablePath on js_HOST_ARCH. - - - - - 97a6f7bc by tocic at 2023-04-23T13:40:08-04:00 Fix doc typos in libraries/base - - - - - 787c6e8c by Ben Gamari at 2023-04-24T12:19:06-04:00 testsuite/T20137: Avoid impl.-defined behavior Previously we would cast pointers to uint64_t. However, implementations are allowed to either zero- or sign-extend such casts. Instead cast to uintptr_t to avoid this. Fixes #23247. - - - - - 87095f6a by Cheng Shao at 2023-04-24T12:19:44-04:00 rts: always build 64-bit atomic ops This patch does a few things: - Always build 64-bit atomic ops in rts/ghc-prim, even on 32-bit platforms - Remove legacy "64bit" cabal flag of rts package - Fix hs_xchg64 function prototype for 32-bit platforms - Fix AtomicFetch test for wasm32 - - - - - 2685a12d by Cheng Shao at 2023-04-24T12:20:21-04:00 compiler: don't install signal handlers when the host platform doesn't have signals Previously, large parts of GHC API will transitively invoke withSignalHandlers, which doesn't work on host platforms without signal functionality at all (e.g. wasm32-wasi). By making withSignalHandlers a no-op on those platforms, we can make more parts of GHC API work out of the box when signals aren't supported. - - - - - 1338b7a3 by Cheng Shao at 2023-04-24T16:21:30-04:00 hadrian: fix non-ghc program paths passed to testsuite driver when testing cross GHC - - - - - 1a10f556 by Andrew Lelechenko at 2023-04-24T16:22:09-04:00 Add since pragma to Data.Functor.unzip - - - - - 0da9e882 by Soham Chowdhury at 2023-04-25T00:15:22-04:00 More informative errors for bad imports (#21826) - - - - - ebd5b078 by Josh Meredith at 2023-04-25T00:15:58-04:00 JS/base: provide implementation for mkdir (issue 22374) - - - - - 8f656188 by Josh Meredith at 2023-04-25T18:12:38-04:00 JS: Fix h$base_access implementation (issue 22576) - - - - - 74c55712 by Andrei Borzenkov at 2023-04-25T18:13:19-04:00 Give more guarntees about ImplicitParams (#23289) - Added new section in the GHC user's guide that legends behavior of nested implicit parameter bindings in these two cases: let ?f = 1 in let ?f = 2 in ?f and data T where MkT :: (?f :: Int) => T f :: T -> T -> Int f MkT MkT = ?f - Added new test case to examine this behavior. - - - - - c30ac25f by Sebastian Graf at 2023-04-26T14:50:51-04:00 DmdAnal: Unleash demand signatures of free RULE and unfolding binders (#23208) In #23208 we observed that the demand signature of a binder occuring in a RULE wasn't unleashed, leading to a transitively used binder being discarded as absent. The solution was to use the same code path that we already use for handling exported bindings. See the changes to `Note [Absence analysis for stable unfoldings and RULES]` for more details. I took the chance to factor out the old notion of a `PlusDmdArg` (a pair of a `VarEnv Demand` and a `Divergence`) into `DmdEnv`, which fits nicely into our existing framework. As a result, I had to touch quite a few places in the code. This refactoring exposed a few small bugs around correct handling of bottoming demand environments. As a result, some strictness signatures now mention uniques that weren't there before which caused test output changes to T13143, T19969 and T22112. But these tests compared whole -ddump-simpl listings which is a very fragile thing to begin with. I changed what exactly they test for based on the symptoms in the corresponding issues. There is a single regression in T18894 because we are more conservative around stable unfoldings now. Unfortunately it is not easily fixed; let's wait until there is a concrete motivation before invest more time. Fixes #23208. - - - - - 77f506b8 by Josh Meredith at 2023-04-26T14:51:28-04:00 Refactor GenStgRhs to include the Type in both constructors (#23280, #22576, #22364) Carry the actual type of an expression through the PreStgRhs and into GenStgRhs for use in later stages. Currently this is used in the JavaScript backend to fix some tests from the above mentioned issues: EtaExpandLevPoly, RepPolyWrappedVar2, T13822, T14749. - - - - - 052e2bb6 by Alan Zimmerman at 2023-04-26T14:52:05-04:00 EPA: Use ExplicitBraces only in HsModule !9018 brought in exact print annotations in LayoutInfo for open and close braces at the top level. But it retained them in the HsModule annotations too. Remove the originals, so exact printing uses LayoutInfo - - - - - d5c4629b by Cheng Shao at 2023-04-27T16:00:35-04:00 ci: update ci.sh to actually run the entire testsuite for wasm backend For the time being, we still need to use in-tree mode and can't test the bindist yet. - - - - - 533d075e by Cheng Shao at 2023-04-27T16:00:35-04:00 ci: additional wasm32 manual jobs in validate pipelines This patch enables bignum native & unregisterised wasm32 jobs as manual jobs in validate pipelines, which can be useful to prevent breakage when working on wasm32 related patches. - - - - - b5f00811 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: fix cross prefix stripping This patch fixes cross prefix stripping in the testsuite driver. The normalization logic used to only handle prefixes of the triple form <arch>-<vendor>-<os>, now it's relaxed to allow any number of tokens in the prefix tuple, so the cross prefix stripping logic would work when ghc is configured with something like --target=wasm32-wasi. - - - - - 6f511c36 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: include target exe extension in heap profile filenames This patch fixes hp2ps related framework failures when testing the wasm backend by including target exe extension in heap profile filenames. - - - - - e6416b10 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: exclude ghci ways if no rts linker is present This patch implements logic to automatically exclude ghci ways when there is no rts linker. It's way better than having to annotate individual test cases. - - - - - 791cce64 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: fix permission bits in copy_files When the testsuite driver copy files instead of symlinking them, it should also copy the permission bits, otherwise there'll be permission denied errors. Also, enforce file copying when testing wasm32, since wasmtime doesn't handle host symlinks quite well (https://github.com/bytecodealliance/wasmtime/issues/6227). - - - - - aa6afe8a by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: add the req_ghc_with_threaded_rts predicate This patch adds the req_ghc_with_threaded_rts predicate to the testsuite to assert the platform has threaded RTS, and mark some tests as req_ghc_with_threaded_rts. Also makes ghc_with_threaded_rts a config field instead of a global variable. - - - - - ce580426 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: add the req_process predicate This patch adds the req_process predicate to the testsuite to assert the platform has a process model, also marking tests that involve spawning processes as req_process. Also bumps hpc & process submodule. - - - - - cb933665 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: add the req_host_target_ghc predicate This patch adds the req_host_target_ghc predicate to the testsuite to assert the ghc compiler being tested can compile both host/target code. When testing cross GHCs this is not supported yet, but it may change in the future. - - - - - b174a110 by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: add missing annotations for some tests This patch adds missing annotations (req_th, req_dynamic_lib_support, req_rts_linker) to some tests. They were discovered when testing wasm32, though it's better to be explicit about what features they require, rather than simply adding when(arch('wasm32'), skip). - - - - - bd2bfdec by Cheng Shao at 2023-04-27T16:00:35-04:00 testsuite: wasm32-specific fixes This patch includes all wasm32-specific testsuite fixes. - - - - - 4eaf2c2a by Josh Meredith at 2023-04-27T16:01:11-04:00 JS: change GHC.JS.Transform.identsS/E/V to take a saturated IR (#23304) - - - - - 57277662 by sheaf at 2023-04-29T20:23:06+02:00 Add the Unsatisfiable class This commit implements GHC proposal #433, adding the Unsatisfiable class to the GHC.TypeError module. This provides an alternative to TypeError for which error reporting is more predictable: we report it when we are reporting unsolved Wanted constraints. Fixes #14983 #16249 #16906 #18310 #20835 - - - - - 00a8a5ff by Torsten Schmits at 2023-04-30T03:45:09-04:00 Add structured error messages for GHC.Rename.Names Tracking ticket: #20115 MR: !10336 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 931c8d82 by Ben Orchard at 2023-05-03T20:16:18-04:00 Add sized primitive literal syntax Adds a new LANGUAGE pragma ExtendedLiterals, which enables defining unboxed numeric literals such as `0xFF#Word8 :: Word8#`. Implements GHC proposal 0451: https://github.com/ghc-proposals/ghc-proposals/blob/b384a538b34f79d18a020145... Fixes #21422. Bumps haddock submodule. Co-authored-by: Krzysztof Gogolewski <krzysztof.gogolewski@tweag.io> - - - - - f3460845 by Andrew Lelechenko at 2023-05-03T20:16:57-04:00 Document instances of Double - - - - - 1e9caa1a by Sylvain Henry at 2023-05-03T20:17:37-04:00 Bump Cabal submodule (#22356) - - - - - 4eafb52a by sheaf at 2023-05-03T20:18:16-04:00 Don't forget to check the parent in an export list Commit 3f374399 introduced a bug which caused us to forget to include the parent of an export item of the form T(..) (that is, IEThingAll) when checking for duplicate exports. Fixes #23318 - - - - - 8fde4ac8 by amesgen at 2023-05-03T20:18:57-04:00 Fix unlit path in cross bindists - - - - - 8cc9a534 by Matthew Pickering at 2023-05-04T14:58:14-04:00 hadrian: Flavour: Change args -> extraArgs Previously in a flavour definition you could override all the flags which were passed to GHC. This causes issues when needed to compute a package hash because we need to know what these extra arguments are going to be before computing the hash. The solution is to modify flavour so that the arguments you pass here are just extra ones rather than all the arguments that you need to compile something. This makes things work more like how cabal.project files work when you give extra arguments to a package and also means that flavour transformers correctly affect the hash. - - - - - 3fdb18f8 by romes at 2023-05-04T14:58:14-04:00 Hardwire a better unit-id for ghc Previously, the unit-id of ghc-the-library was fixed as `ghc`. This was done primarily because the compiler must know the unit-id of some packages (including ghc) a-priori to define wired-in names. However, as seen in #20742, a reinstallable `ghc` whose unit-id is fixed to `ghc` might result in subtle bugs when different ghc's interact. A good example of this is having GHC_A load a plugin compiled by GHC_B, where GHC_A and GHC_B are linked to ghc-libraries that are ABI incompatible. Without a distinction between the unit-id of the ghc library GHC_A is linked against and the ghc library the plugin it is loading was compiled against, we can't check compatibility. This patch gives a slightly better unit-id to ghc (ghc-version) by (1) Not setting -this-unit-id to ghc, but rather to the new unit-id (modulo stage0) (2) Adding a definition to `GHC.Settings.Config` whose value is the new unit-id. (2.1) `GHC.Settings.Config` is generated by Hadrian (2.2) and also by cabal through `compiler/Setup.hs` This unit-id definition is imported by `GHC.Unit.Types` and used to set the wired-in unit-id of "ghc", which was previously fixed to "ghc" The commits following this one will improve the unit-id with a cabal-style package hash and check compatibility when loading plugins. Note that we also ensure that ghc's unit key matches unit id both when hadrian or cabal builds ghc, and in this way we no longer need to add `ghc` to the WiringMap. - - - - - 6689c9c6 by romes at 2023-05-04T14:58:14-04:00 Validate compatibility of ghcs when loading plugins Ensure, when loading plugins, that the ghc the plugin depends on is the ghc loading the plugin -- otherwise fail to load the plugin. Progress towards #20742. - - - - - db4be339 by romes at 2023-05-04T14:58:14-04:00 Add hashes to unit-ids created by hadrian This commit adds support for computing an inputs hash for packages compiled by hadrian. The result is that ABI incompatible packages should be given different hashes and therefore be distinct in a cabal store. Hashing is enabled by the `--flag`, and is off by default as the hash contains a hash of the source files. We enable it when we produce release builds so that the artifacts we distribute have the right unit ids. - - - - - 944a9b94 by Matthew Pickering at 2023-05-04T14:58:14-04:00 Use hash-unit-ids in release jobs Includes fix upload_ghc_libs glob - - - - - 116d7312 by Josh Meredith at 2023-05-04T14:58:51-04:00 JS: fix bounds checking (Issue 23123) * For ByteArray-based bounds-checking, the JavaScript backend must use the `len` field, instead of the inbuild JavaScript `length` field. * Range-based operations must also check both the start and end of the range for bounds * All indicies are valid for ranges of size zero, since they are essentially no-ops * For cases of ByteArray accesses (e.g. read as Int), the end index is (i * sizeof(type) + sizeof(type) - 1), while the previous implementation uses (i + sizeof(type) - 1). In the Int32 example, this is (i * 4 + 3) * IndexByteArrayOp_Word8As* primitives use byte array indicies (unlike the previous point), but now check both start and end indicies * Byte array copies now check if the arrays are the same by identity and then if the ranges overlap. - - - - - 2d5c1dde by Sylvain Henry at 2023-05-04T14:58:51-04:00 Fix remaining issues with bound checking (#23123) While fixing these I've also changed the way we store addresses into ByteArray#. Addr# are composed of two parts: a JavaScript array and an offset (32-bit number). Suppose we want to store an Addr# in a ByteArray# foo at offset i. Before this patch, we were storing both fields as a tuple in the "arr" array field: foo.arr[i] = [addr_arr, addr_offset]; Now we only store the array part in the "arr" field and the offset directly in the array: foo.dv.setInt32(i, addr_offset): foo.arr[i] = addr_arr; It avoids wasting space for the tuple. - - - - - 98c5ee45 by Luite Stegeman at 2023-05-04T14:59:31-04:00 JavaScript: Correct arguments to h$appendToHsStringA fixes #23278 - - - - - ca611447 by Josh Meredith at 2023-05-04T15:00:07-04:00 base/encoding: add an allocations performance test (#22946) - - - - - e3ddf58d by Krzysztof Gogolewski at 2023-05-04T15:00:44-04:00 linear types: Don't add external names to the usage env This has no observable effect, but avoids storing useless data. - - - - - b3226616 by Andrei Borzenkov at 2023-05-04T15:01:25-04:00 Improved documentation for the Data.OldList.nub function There was recomentation to use map head . group . sort instead of nub function, but containers library has more suitable and efficient analogue - - - - - e8b72ff6 by Ryan Scott at 2023-05-04T15:02:02-04:00 Fix type variable substitution in gen_Newtype_fam_insts Previously, `gen_Newtype_fam_insts` was substituting the type variable binders of a type family instance using `substTyVars`, which failed to take type variable dependencies into account. There is similar code in `GHC.Tc.TyCl.Class.tcATDefault` that _does_ perform this substitution properly, so this patch: 1. Factors out this code into a top-level `substATBndrs` function, and 2. Uses `substATBndrs` in `gen_Newtype_fam_insts`. Fixes #23329. - - - - - 275836d2 by Torsten Schmits at 2023-05-05T08:43:02+00:00 Add structured error messages for GHC.Rename.Utils Tracking ticket: #20115 MR: !10350 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 983ce558 by Oleg Grenrus at 2023-05-05T13:11:29-04:00 Use TemplateHaskellQuotes in TH.Syntax to construct Names - - - - - a5174a59 by Matthew Pickering at 2023-05-05T18:42:31-04:00 driver: Use hooks from plugin_hsc_env This fixes a bug in oneshot mode where hooks modified in a plugin wouldn't be used in oneshot mode because we neglected to use the right hsc_env. This was observed by @csabahruska. - - - - - 18a7d03d by Aaron Allen at 2023-05-05T18:42:31-04:00 Rework plugin initialisation points In general this patch pushes plugin initialisation points to earlier in the pipeline. As plugins can modify the `HscEnv`, it's imperative that the plugins are initialised as soon as possible and used thereafter. For example, there are some new tests which modify hsc_logger and other hooks which failed to fire before (and now do) One consequence of this change is that the error for specifying the usage of a HPT plugin from the command line has changed, because it's now attempted to be loaded at initialisation rather than causing a cyclic module import. Closes #21279 Co-authored-by: Matthew Pickering <matthewtpickering@gmail.com> - - - - - 6e776ed3 by Matthew Pickering at 2023-05-05T18:42:31-04:00 docs: Add Note [Timing of plugin initialization] - - - - - e1df8511 by Matthew Pickering at 2023-05-05T18:43:07-04:00 Incrementally update ghcup metadata in ghc/ghcup-metadata This job paves the way for distributing nightly builds * A new repo https://gitlab.haskell.org/ghc/ghcup-metadata stores the metadata on the "updates" branch. * Each night this metadata is downloaded and the nightly builds are appended to the end of the metadata. * The update job only runs on the scheduled nightly pipeline, not just when NIGHTLY=1. Things which are not done yet * Modify the retention policy for nightly jobs * Think about building release flavour compilers to distribute nightly. Fixes #23334 - - - - - 8f303d27 by Rodrigo Mesquita at 2023-05-05T22:04:31-04:00 docs: Remove mentions of ArrayArray# from unlifted FFI section Fixes #23277 - - - - - 994bda56 by Torsten Schmits at 2023-05-05T22:05:12-04:00 Add structured error messages for GHC.Rename.Module Tracking ticket: #20115 MR: !10361 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. Only addresses the single warning missing from the previous MR. - - - - - 3e3a6be4 by Ben Gamari at 2023-05-08T12:15:19+00:00 rts: Fix data-race in hs_init_ghc As noticed by @Terrorjack, `hs_init_ghc` previously used non-atomic increment/decrement on the RTS's initialization count. This may go wrong in a multithreaded program which initializes the runtime multiple times. Closes #22756. - - - - - 78c8dc50 by Torsten Schmits at 2023-05-08T21:41:51-04:00 Add structured error messages for GHC.IfaceToCore Tracking ticket: #20114 MR: !10390 This converts uses of `mkTcRnUnknownMessage` to newly added constructors of `TcRnMessage`. - - - - - 0e2df4c9 by Bryan Richter at 2023-05-09T12:03:35+03:00 Fix up rules for ghcup-metadata-nightly-push - - - - - b970e64f by Ben Gamari at 2023-05-09T08:41:33-04:00 testsuite: Add test for atomicSwapIORef - - - - - 81cfefd2 by Ben Gamari at 2023-05-09T08:41:53-04:00 compiler: Implement atomicSwapIORef with xchg As requested by @treeowl in CLC#139. - - - - - 6b29154d by Ben Gamari at 2023-05-09T08:41:53-04:00 Make atomicSwapMutVar# an inline primop - - - - - 64064cfe by doyougnu at 2023-05-09T18:40:01-04:00 JS: add GHC.JS.Optimizer, remove RTS.Printer, add Linker.Opt This MR changes some simple optimizations and is a first step in re-architecting the JS backend pipeline to add the optimizer. In particular it: - removes simple peep hole optimizations from `GHC.StgToJS.Printer` and removes that module - adds module `GHC.JS.Optimizer` - defines the same peep hole opts that were removed only now they are `Syntax -> Syntax` transformations rather than `Syntax -> JS code` optimizations - hooks the optimizer into code gen - adds FuncStat and ForStat constructors to the backend. Working Ticket: - #22736 Related MRs: - MR !10142 - MR !10000 ------------------------- Metric Decrease: CoOpt_Read ManyAlternatives PmSeriesS PmSeriesT PmSeriesV T10421 T12707 T13253 T13253-spj T15164 T17516 T18140 T18282 T18698a T18698b T18923 T1969 T19695 T20049 T3064 T5321FD T5321Fun T783 T9198 T9233 T9630 ------------------------- - - - - - 6738c01d by Krzysztof Gogolewski at 2023-05-09T18:40:38-04:00 Add a regression test for #21050 - - - - - b2cdb7da by Ben Gamari at 2023-05-09T18:41:14-04:00 nonmoving: Account for mutator allocations in bytes_allocated Previously we failed to account direct mutator allocations into the nonmoving heap against the mutator's allocation limit and `cap->total_allocated`. This only manifests during CAF evaluation (since we allocate the CAF's blackhole directly into the nonmoving heap). Fixes #23312. - - - - - 0657b482 by Sven Tennie at 2023-05-09T22:22:42-04:00 Adjust AArch64 stackFrameHeaderSize The prologue of each stack frame are the saved LR and FP registers, 8 byte each. I.e. the size of the stack frame header is 2 * 8 byte. - - - - - 7788c09c by konsumlamm at 2023-05-09T22:23:23-04:00 Make `(&)` representation polymorphic in the return type - - - - - b3195922 by Ben Gamari at 2023-05-10T05:06:45-04:00 ghc-prim: Generalize keepAlive#/touch# in state token type Closes #23163. - - - - - 1e6861dd by Cheng Shao at 2023-05-10T05:07:25-04:00 Bump hsc2hs submodule Fixes #22981. - - - - - 0a513952 by Ben Gamari at 2023-05-11T04:10:17-04:00 base: Export GHC.Conc.Sync.fromThreadId Closes #22706. - - - - - 29be39ba by Matthew Pickering at 2023-05-11T04:10:54-04:00 Build vanilla alpine bindists We currently attempt to build and distribute fully static alpine bindists (ones which could be used on any linux platform) but most people who use the alpine bindists want to use alpine to build their own static applications (for which a fully static bindist is not necessary). We should build and distribute these bindists for these users whilst the fully-static bindist is still unusable. Fixes #23349 - - - - - 40c7daed by Simon Peyton Jones at 2023-05-11T04:11:30-04:00 Look both ways when looking for quantified equalities When looking up (t1 ~# t2) in the quantified constraints, check both orientations. Forgetting this led to #23333. - - - - - c17bb82f by Rodrigo Mesquita at 2023-05-11T04:12:07-04:00 Move "target has RTS linker" out of settings We move the "target has RTS linker" information out of configure into a predicate in GHC, and remove this option from the settings file where it is unnecessary -- it's information statically known from the platform. Note that previously we would consider `powerpc`s and `s390x`s other than `powerpc-ibm-aix*` and `s390x-ibm-linux` to have an RTS linker, but the RTS linker supports neither platform. Closes #23361 - - - - - bd0b056e by Krzysztof Gogolewski at 2023-05-11T04:12:44-04:00 Add a test for #17284 Since !10123 we now reject this program. - - - - - 630b1fea by Andrew Lelechenko at 2023-05-11T04:13:24-04:00 Document unlawfulness of instance Num Fixed Fixes #22712 - - - - - 87eebf98 by sheaf at 2023-05-11T11:55:22-04:00 Add fused multiply-add instructions This patch adds eight new primops that fuse a multiplication and an addition or subtraction: - `{fmadd,fmsub,fnmadd,fnmsub}{Float,Double}#` fmadd x y z is x * y + z, computed with a single rounding step. This patch implements code generation for these primops in the following backends: - X86, AArch64 and PowerPC NCG, - LLVM - C WASM uses the C implementation. The primops are unsupported in the JavaScript backend. The following constant folding rules are also provided: - compute a * b + c when a, b, c are all literals, - x * y + 0 ==> x * y, - ±1 * y + z ==> z ± y and x * ±1 + z ==> z ± x. NB: the constant folding rules incorrectly handle signed zero. This is a known limitation with GHC's floating-point constant folding rules (#21227), which we hope to resolve in the future. - - - - - ad16a066 by Krzysztof Gogolewski at 2023-05-11T11:55:59-04:00 Add a test for #21278 - - - - - 05cea68c by Matthew Pickering at 2023-05-11T11:56:36-04:00 rts: Refine memory retention behaviour to account for pinned/compacted objects When using the copying collector there is still a lot of data which isn't copied (such as pinned, compacted, large objects etc). The logic to decide how much memory to retain didn't take into account that these wouldn't be copied. Therefore we pessimistically retained 2* the amount of memory for these blocks even though they wouldn't be copied by the collector. The solution is to split up the heap into two parts, the parts which will be copied and the parts which won't be copied. Then the appropiate factor is applied to each part individually (2 * for copying and 1.2 * for not copying). The T23221 test demonstrates this improvement with a program which first allocates many unpinned ByteArray# followed by many pinned ByteArray# and observes the difference in the ultimate memory baseline between the two. There are some charts on #23221. Fixes #23221 - - - - - 1bb24432 by Cheng Shao at 2023-05-11T11:57:15-04:00 hadrian: fix no_dynamic_libs flavour transformer This patch fixes the no_dynamic_libs flavour transformer and make fully_static reuse it. Previously building with no_dynamic_libs fails since ghc program is still dynamic and transitively brings in dyn ways of rts which are produced by no rules. - - - - - 0ed493a3 by Josh Meredith at 2023-05-11T23:08:27-04:00 JS: refactor jsSaturate to return a saturated JStat (#23328) - - - - - a856d98e by Pierre Le Marre at 2023-05-11T23:09:08-04:00 Doc: Fix out-of-sync using-optimisation page - Make explicit that default flag values correspond to their -O0 value. - Fix -fignore-interface-pragmas, -fstg-cse, -fdo-eta-reduction, -fcross-module-specialise, -fsolve-constant-dicts, -fworker-wrapper. - - - - - c176ad18 by sheaf at 2023-05-12T06:10:57-04:00 Don't panic in mkNewTyConRhs This function could come across invalid newtype constructors, as we only perform validity checking of newtypes once we are outside the knot-tied typechecking loop. This patch changes this function to fake up a stub type in the case of an invalid newtype, instead of panicking. This patch also changes "checkNewDataCon" so that it reports as many errors as possible at once. Fixes #23308 - - - - - ab63daac by Krzysztof Gogolewski at 2023-05-12T06:11:38-04:00 Allow Core optimizations when interpreting bytecode Tracking ticket: #23056 MR: !10399 This adds the flag `-funoptimized-core-for-interpreter`, permitting use of the `-O` flag to enable optimizations when compiling with the interpreter backend, like in ghci. - - - - - c6cf9433 by Ben Gamari at 2023-05-12T06:12:14-04:00 hadrian: Fix mention of non-existent removeFiles function Previously Hadrian's bindist Makefile referred to a `removeFiles` function that was previously defined by the `make` build system. Since the `make` build system is no longer around, this function is now undefined. Naturally, make being make, this appears to be silently ignored instead of producing an error. Fix this by rewriting it to `rm -f`. Closes #23373. - - - - - eb60ec18 by Andrew Lelechenko at 2023-05-12T06:12:54-04:00 Mention new implementation of GHC.IORef.atomicSwapIORef in the changelog - - - - - aa84cff4 by Teo Camarasu at 2023-05-12T19:27:23-04:00 rts: Ensure non-moving gc is not running when pausing - - - - - 5ad776ab by Teo Camarasu at 2023-05-12T19:27:23-04:00 rts: Teach listAllBlocks about nonmoving heap List all blocks on the non-moving heap. Resolves #22627 - - - - - d683b2e5 by Krzysztof Gogolewski at 2023-05-12T19:28:00-04:00 Fix coercion optimisation for SelCo (#23362) setNominalRole_maybe is supposed to output a nominal coercion. In the SelCo case, it was not updating the stored role to Nominal, causing #23362. - - - - - 59aa4676 by Alexis King at 2023-05-12T19:28:47-04:00 hadrian: Fix linker script flag for MergeObjects builder This fixes what appears to have been a typo in !9530. The `-t` flag just enables tracing on all versions of `ld` I’ve looked at, while `-T` is used to specify a linker script. It seems that this worked anyway for some reason on some `ld` implementations (perhaps because they automatically detect linker scripts), but the missing `-T` argument causes `gold` to complain. - - - - - 4bf9fa0f by Adam Gundry at 2023-05-12T23:49:49-04:00 Less coercion optimization for non-newtype axioms See Note [Push transitivity inside newtype axioms only] for an explanation of the change here. This change substantially improves the performance of coercion optimization for programs involving transitive type family reductions. ------------------------- Metric Decrease: CoOpt_Singletons LargeRecord T12227 T12545 T13386 T15703 T5030 T8095 ------------------------- - - - - - dc0c9574 by Adam Gundry at 2023-05-12T23:49:49-04:00 Move checkAxInstCo to GHC.Core.Lint A consequence of the previous change is that checkAxInstCo is no longer called during coercion optimization, so it can be moved back where it belongs. Also includes some edits to Note [Conflict checking with AxiomInstCo] as suggested by @simonpj. - - - - - 8b9b7dbc by Simon Peyton Jones at 2023-05-12T23:50:25-04:00 Use the eager unifier in the constraint solver This patch continues the refactoring of the constraint solver described in #23070. The Big Deal in this patch is to call the regular, eager unifier from the constraint solver, when we want to create new equalities. This replaces the existing, unifyWanted which amounted to yet-another-unifier, so it reduces duplication of a rather subtle piece of technology. See * Note [The eager unifier] in GHC.Tc.Utils.Unify * GHC.Tc.Solver.Monad.wrapUnifierTcS I did lots of other refactoring along the way * I simplified the treatment of right hand sides that contain CoercionHoles. Now, a constraint that contains a hetero-kind CoercionHole is non-canonical, and cannot be used for rewriting or unification alike. This required me to add the ch_hertero_kind flag to CoercionHole, with consequent knock-on effects. See wrinkle (2) of `Note [Equalities with incompatible kinds]` in GHC.Tc.Solver.Equality. * I refactored the StopOrContinue type to add StartAgain, so that after a fundep improvement (for example) we can simply start the pipeline again. * I got rid of the unpleasant (and inefficient) rewriterSetFromType/Co functions. With Richard I concluded that they are never needed. * I discovered Wrinkle (W1) in Note [Wanteds rewrite Wanteds] in GHC.Tc.Types.Constraint, and therefore now prioritise non-rewritten equalities. Quite a few error messages change, I think always for the better. Compiler runtime stays about the same, with one outlier: a 17% improvement in T17836 Metric Decrease: T17836 T18223 - - - - - 5cad28e7 by Bartłomiej Cieślar at 2023-05-12T23:51:06-04:00 Cleanup of dynflags override in export renaming The deprecation warnings are normally emitted whenever the name's GRE is being looked up, which calls the GHC.Rename.Env.addUsedGRE function. We do not want those warnings to be emitted when renaming export lists, so they are artificially turned off by removing all warning categories from DynFlags at the beginning of GHC.Tc.Gen.Export.rnExports. This commit removes that dependency by unifying the function used for GRE lookup in lookup_ie to lookupGreAvailRn and disabling the call to addUsedGRE in said function (the warnings are also disabled in a call to lookupSubBndrOcc_helper in lookupChildrenExport), as per #17957. This commit also changes the setting for whether to warn about deprecated names in addUsedGREs to be an explicit enum instead of a boolean. - - - - - d85ed900 by Alexis King at 2023-05-13T08:45:18-04:00 Use a uniform return convention in bytecode for unary results fixes #22958 - - - - - 8a0d45f7 by Andrew Lelechenko at 2023-05-13T08:45:58-04:00 Add more instances for Compose: Enum, Bounded, Num, Real, Integral See https://github.com/haskell/core-libraries-committee/issues/160 for discussion - - - - - 902f0730 by Simon Peyton Jones at 2023-05-13T14:58:34-04:00 Make GHC.Types.Id.Make.shouldUnpackTy a bit more clever As #23307, GHC.Types.Id.Make.shouldUnpackTy was leaving money on the table, failing to unpack arguments that are perfectly unpackable. The fix is pretty easy; see Note [Recursive unboxing] - - - - - a5451438 by sheaf at 2023-05-13T14:59:13-04:00 Fix bad multiplicity role in tyConAppFunCo_maybe The function tyConAppFunCo_maybe produces a multiplicity coercion for the multiplicity argument of the function arrow, except that it could be at the wrong role if asked to produce a representational coercion. We fix this by using the 'funRole' function, which computes the right roles for arguments to the function arrow TyCon. Fixes #23386 - - - - - 5b9e9300 by sheaf at 2023-05-15T11:26:59-04:00 Turn "ambiguous import" error into a panic This error should never occur, as a lookup of a type or data constructor should never be ambiguous. This is because a single module cannot export multiple Names with the same OccName, as per item (1) of Note [Exporting duplicate declarations] in GHC.Tc.Gen.Export. This code path was intended to handle duplicate record fields, but the rest of the code had since been refactored to handle those in a different way. We also remove the AmbiguousImport constructor of IELookupError, as it is no longer used. Fixes #23302 - - - - - e305e60c by M Farkas-Dyck at 2023-05-15T11:27:41-04:00 Unbreak some tests with latest GNU grep, which now warns about stray '\'. Confusingly, the testsuite mangled the error to say "stray /". We also migrate some tests from grep to grep -E, as it seems the author actually wanted an "POSIX extended" (a.k.a. sane) regex. Background: POSIX specifies 2 "regex" syntaxen: "basic" and "extended". Of these, only "extended" syntax is actually a regular expression. Furthermore, "basic" syntax is inconsistent in its use of the '\' character — sometimes it escapes a regex metacharacter, but sometimes it unescapes it, i.e. it makes an otherwise normal character become a metacharacter. This baffles me and it seems also the authors of these tests. Also, the regex(7) man page (at least on Linux) says "basic" syntax is obsolete. Nearly all modern tools and libraries are consistent in this use of the '\' character (of which many use "extended" syntax by default). - - - - - 5ae81842 by sheaf at 2023-05-15T14:49:17-04:00 Improve "ambiguous occurrence" error messages This error was sometimes a bit confusing, especially when data families were involved. This commit improves the general presentation of the "ambiguous occurrence" error, and adds a bit of extra context in the case of data families. Fixes #23301 - - - - - 2f571afe by Sylvain Henry at 2023-05-15T14:50:07-04:00 Fix GHCJS OS platform (fix #23346) - - - - - 86aae570 by Oleg Grenrus at 2023-05-15T14:50:43-04:00 Split DynFlags structure into own module This will allow to make command line parsing to depend on diagnostic system (which depends on dynflags) - - - - - fbe3fe00 by Josh Meredith at 2023-05-15T18:01:43-04:00 Replace the implementation of CodeBuffers with unboxed types - - - - - 21f3aae7 by Josh Meredith at 2023-05-15T18:01:43-04:00 Use unboxed codebuffers in base Metric Decrease: encodingAllocations - - - - - 18ea2295 by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Weak pointer cleanups Various stylistic cleanups. No functional changes. - - - - - c343112f by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Don't force debug output to stderr Previously `+RTS -Dw -l` would emit debug output to the eventlog while `+RTS -l -Dw` would emit it to stderr. This was because the parser for `-D` would unconditionally override the debug output target. Now we instead only do so if no it is currently `TRACE_NONE`. - - - - - a5f5f067 by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Forcibly flush eventlog on barf Previously we would attempt to flush via `endEventLogging` which can easily deadlock, e.g., if `barf` fails during GC. Using `flushEventLog` directly may result in slightly less consistent eventlog output (since we don't take all capabilities before flushing) but avoids deadlocking. - - - - - 73b1e87c by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Assert that pointers aren't cleared by -DZ This turns many segmentation faults into much easier-to-debug assertion failures by ensuring that LOOKS_LIKE_*_PTR checks recognize bit-patterns produced by `+RTS -DZ` clearing as invalid pointers. This is a bit ad-hoc but this is the debug runtime. - - - - - 37fb61d8 by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Introduce printGlobalThreads - - - - - 451d65a6 by Ben Gamari at 2023-05-15T18:02:20-04:00 rts: Don't sanity-check StgTSO.global_link See Note [Avoid dangling global_link pointers]. Fixes #19146. - - - - - d69cbd78 by sheaf at 2023-05-15T18:03:00-04:00 Split up tyThingToIfaceDecl from GHC.Iface.Make This commit moves tyThingToIfaceDecl and coAxiomToIfaceDecl from GHC.Iface.Make into GHC.Iface.Decl. This avoids GHC.Types.TyThing.Ppr, which needs tyThingToIfaceDecl, transitively depending on e.g. GHC.Iface.Load and GHC.Tc.Utils.Monad. - - - - - 4d29ecdf by sheaf at 2023-05-15T18:03:00-04:00 Migrate errors to diagnostics in GHC.Tc.Module This commit migrates the errors in GHC.Tc.Module to use the new diagnostic infrastructure. It required a significant overhaul of the compatibility checks between an hs-boot or signature module and its implementation; we now use a Writer monad to accumulate errors; see the BootMismatch datatype in GHC.Tc.Errors.Types, with its panoply of subtypes. For the sake of readability, several local functions inside the 'checkBootTyCon' function were split off into top-level functions. We split off GHC.Types.HscSource into a "boot or sig" vs "normal hs file" datatype, as this mirrors the logic in several other places where we want to treat hs-boot and hsig files in a similar fashion. This commit also refactors the Backpack checks for type synonyms implementing abstract data, to correctly reject implementations that contain qualified or quantified types (this fixes #23342 and #23344). - - - - - d986c98e by Rodrigo Mesquita at 2023-05-16T00:14:04-04:00 configure: Drop unused AC_PROG_CPP In configure, we were calling `AC_PROG_CPP` but never making use of the $CPP variable it sets or reads. The issue is $CPP will show up in the --help output of configure, falsely advertising a configuration option that does nothing. The reason we don't use the $CPP variable is because HS_CPP_CMD is expected to be a single command (without flags), but AC_PROG_CPP, when CPP is unset, will set said variable to something like `/usr/bin/gcc -E`. Instead, we configure HS_CPP_CMD through $CC. - - - - - a8f0435f by Cheng Shao at 2023-05-16T00:14:42-04:00 rts: fix --disable-large-address-space This patch moves ACQUIRE_ALLOC_BLOCK_SPIN_LOCK/RELEASE_ALLOC_BLOCK_SPIN_LOCK from Storage.h to HeapAlloc.h. When --disable-large-address-space is passed to configure, the code in HeapAlloc.h makes use of these two macros. Fixes #23385. - - - - - bdb93cd2 by Oleg Grenrus at 2023-05-16T07:59:21+03:00 Add -Wmissing-role-annotations Implements #22702 - - - - - 41ecfc34 by Ben Gamari at 2023-05-16T07:28:15-04:00 base: Export {get,set}ExceptionFinalizer from System.Mem.Weak As proposed in CLC Proposal #126 [1]. [1]: https://github.com/haskell/core-libraries-committee/issues/126 - - - - - 67330303 by Ben Gamari at 2023-05-16T07:28:16-04:00 base: Introduce printToHandleFinalizerExceptionHandler - - - - - 5e3f9bb5 by Josh Meredith at 2023-05-16T13:59:22-04:00 JS: Implement h$clock_gettime in the JavaScript RTS (#23360) - - - - - 90e69d5d by Zubin Duggal at 2023-05-16T14:00:00-04:00 compiler: Use compact representation for SourceText SourceText is serialized along with INLINE pragmas into interface files. Many of these SourceTexts are identical, for example "{-# INLINE#". When deserialized, each such SourceText was previously expanded out into a [Char], which is highly wasteful of memory, and each such instance of the text would allocate an independent list with its contents as deserializing breaks any sharing that might have existed. Instead, we use a `FastString` to represent these, so that each instance unique text will be interned and stored in a memory efficient manner. - - - - - b70bc690 by Zubin Duggal at 2023-05-16T14:00:00-04:00 compiler: Use compact representation/FastStrings for `SourceNote`s `SourceNote`s should not be stored as [Char] as this is highly wasteful and in certain scenarios can be highly duplicated. Metric Decrease: hard_hole_fits - - - - - 6231a126 by Zubin Duggal at 2023-05-16T14:00:00-04:00 compiler: Use compact representation for UsageFile (#22744) Use FastString to store filepaths in interface files, as this data is highly redundant so we want to share all instances of filepaths in the compiler session. - - - - - 47a58150 by Zubin Duggal at 2023-05-16T14:00:00-04:00 testsuite: add test for T22744 This test checks for #22744 by compiling 100 modules which each have a dependency on 1000 distinct external files. Previously, when loading these interfaces from disk, each individual instance of a filepath in the interface will would be allocated as an individual object on the heap, meaning we have heap objects for 100*1000 files, when there are only 1000 distinct files we care about. This test checks this by first compiling the module normally, then measuring the peak memory usage in a no-op recompile, as the recompilation checking will force the allocation of all these filepaths. - - - - - 0451bdc9 by Ben Gamari at 2023-05-16T21:31:40-04:00 users guide: Add glossary Currently this merely explains the meaning of "technology preview" in the context of released features. - - - - - 0ba52e4e by Ben Gamari at 2023-05-16T21:31:40-04:00 Update glossary.rst - - - - - 3d23060c by Ben Gamari at 2023-05-16T21:31:40-04:00 Use glossary directive - - - - - 2972fd66 by Sylvain Henry at 2023-05-16T21:32:20-04:00 JS: fix getpid (fix #23399) - - - - - 5fe1d3e6 by Matthew Pickering at 2023-05-17T21:42:00-04:00 Use setSrcSpan rather than setLclEnv in solveForAll In subsequent MRs (#23409) we want to remove the TcLclEnv argument from a CtLoc. This MR prepares us for that by removing the one place where the entire TcLclEnv is used, by using it more precisely to just set the contexts source location. Fixes #23390 - - - - - 385edb65 by Torsten Schmits at 2023-05-17T21:42:40-04:00 Update the users guide paragraph on -O in GHCi In relation to #23056 - - - - - 87626ef0 by Ben Gamari at 2023-05-18T15:18:53-04:00 base: Add test for #13660 - - - - - 9eef53b1 by Ben Gamari at 2023-05-18T15:18:53-04:00 base: Move implementation of GHC.Foreign to GHC.Internal - - - - - 174ea2fa by Ben Gamari at 2023-05-18T15:18:53-04:00 base: Introduce {new,with}CStringLen0 These are useful helpers for implementing the internal-NUL code unit check needed to fix #13660. - - - - - a46ced16 by Ben Gamari at 2023-05-18T15:18:53-04:00 base: Clean up documentation - - - - - b98d99cc by Ben Gamari at 2023-05-18T15:18:53-04:00 base: Ensure that FilePaths don't contain NULs POSIX filepaths may not contain the NUL octet but previously we did not reject such paths. This could be exploited by untrusted input to cause discrepancies between various `FilePath` queries and the opened filename. For instance, `readFile "hello.so\x00.txt"` would open the file `"hello.so"` yet `takeFileExtension` would return `".txt"`. The same argument applies to Windows FilePaths Fixes #13660. - - - - - 7ae45459 by Simon Peyton Jones at 2023-05-18T15:19:29-04:00 Allow the demand analyser to unpack tuple and equality dictionaries Addresses #23398. The demand analyser usually does not unpack class dictionaries: see Note [Do not unbox class dictionaries] in GHC.Core.Opt.DmdAnal. This patch makes an exception for tuple dictionaries and equality dictionaries, for reasons explained in wrinkles (DNB1) and (DNB2) of the above Note. Compile times fall by 0.1% for some reason (max 0.7% on T18698b). - - - - - b53a9086 by Greg Steuck at 2023-05-18T15:20:08-04:00 Use a simpler and more portable construct in ld.ldd check printf '%q\n' is a bash extension which led to incorrectly failing an ld.lld test on OpenBSD which uses pdksh as /bin/sh - - - - - dd5710af by Torsten Schmits at 2023-05-18T15:20:50-04:00 Update the warning about interpreter optimizations to reflect that they're not incompatible anymore, but guarded by a flag - - - - - 4f6dd999 by Matthew Pickering at 2023-05-18T15:21:26-04:00 Remove stray dump flags in GHC.Rename.Names - - - - - 4bca0486 by Oleg Grenrus at 2023-05-19T11:51:33+03:00 Make Warn = Located DriverMessage This change makes command line argument parsing use diagnostic framework for producing warnings. - - - - - 525ed554 by Simon Peyton Jones at 2023-05-19T10:09:15-04:00 Type inference for data family newtype instances This patch addresses #23408, a tricky case with data family newtype instances. Consider type family TF a where TF Char = Bool data family DF a newtype instance DF Bool = MkDF Int and [W] Int ~R# DF (TF a), with a Given (a ~# Char). We must fully rewrite the Wanted so the tpye family can fire; that wasn't happening. - - - - - c6fb6690 by Peter Trommler at 2023-05-20T03:16:08-04:00 testsuite: fix predicate on rdynamic test Test rdynamic requires dynamic linking support, which is orthogonal to RTS linker support. Change the predicate accordingly. Fixes #23316 - - - - - 735d504e by Matthew Pickering at 2023-05-20T03:16:44-04:00 docs: Use ghc-ticket directive where appropiate in users guide Using the directive automatically formats and links the ticket appropiately. - - - - - b56d7379 by Sylvain Henry at 2023-05-22T14:21:22-04:00 NCG: remove useless .align directive (#20758) - - - - - 15b93d2f by Simon Peyton Jones at 2023-05-22T14:21:58-04:00 Add test for #23156 This program had exponential typechecking time in GHC 9.4 and 9.6 - - - - - 2b53f206 by Greg Steuck at 2023-05-22T20:23:11-04:00 Revert "Change hostSupportsRPaths to report False on OpenBSD" This reverts commit 1e0d8fdb55a38ece34fa6cf214e1d2d46f5f5bf2. - - - - - 882e43b7 by Greg Steuck at 2023-05-22T20:23:11-04:00 Disable T17414 on OpenBSD Like on other systems it's not guaranteed that there's sufficient space in /tmp to write 2G out. - - - - - 9d531f9a by Greg Steuck at 2023-05-22T20:23:11-04:00 Bring back getExecutablePath to getBaseDir on OpenBSD Fix #18173 - - - - - 9db0eadd by Krzysztof Gogolewski at 2023-05-22T20:23:47-04:00 Add an error origin for impedance matching (#23427) - - - - - 33cf4659 by Ben Gamari at 2023-05-23T03:46:20-04:00 testsuite: Add tests for #23146 Both lifted and unlifted variants. - - - - - 76727617 by Ben Gamari at 2023-05-23T03:46:21-04:00 codeGen: Fix some Haddocks - - - - - 33a8c348 by Ben Gamari at 2023-05-23T03:46:21-04:00 codeGen: Give proper LFInfo to datacon wrappers As noted in `Note [Conveying CAF-info and LFInfo between modules]`, when importing a binding from another module we must ensure that it gets the appropriate `LambdaFormInfo` if it is in WHNF to ensure that references to it are tagged correctly. However, the implementation responsible for doing this, `GHC.StgToCmm.Closure.mkLFImported`, only dealt with datacon workers and not wrappers. This lead to the crash of this program in #23146: module B where type NP :: [UnliftedType] -> UnliftedType data NP xs where UNil :: NP '[] module A where import B fieldsSam :: NP xs -> NP xs -> Bool fieldsSam UNil UNil = True x = fieldsSam UNil UNil Due to its GADT nature, `UNil` produces a trivial wrapper $WUNil :: NP '[] $WUNil = UNil @'[] @~(<co:1>) which is referenced in the RHS of `A.x`. Due to the above-mentioned bug in `mkLFImported`, the references to `$WUNil` passed to `fieldsSam` were not tagged. This is problematic as `fieldsSam` expected its arguments to be tagged as they are unlifted. The fix is straightforward: extend the logic in `mkLFImported` to cover (nullary) datacon wrappers as well as workers. This is safe because we know that the wrapper of a nullary datacon will be in WHNF, even if it includes equalities evidence (since such equalities are not runtime relevant). Thanks to @MangoIV for the great ticket and @alt-romes for his minimization and help debugging. Fixes #23146. - - - - - 2fc18e9e by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 codeGen: Fix LFInfo of imported datacon wrappers As noted in #23231 and in the previous commit, we were failing to give a an LFInfo of LFCon to a nullary datacon wrapper from another module, failing to properly tag pointers which ultimately led to the segmentation fault in #23146. On top of the previous commit which now considers wrappers where we previously only considered workers, we change the order of the guards so that we check for the arity of the binding before we check whether it is a constructor. This allows us to (1) Correctly assign `LFReEntrant` to imported wrappers whose worker was nullary, which we previously would fail to do (2) Remove the `isNullaryRepDataCon` predicate: (a) which was previously wrong, since it considered wrappers whose workers had zero-width arguments to be non-nullary and would fail to give `LFCon` to them (b) is now unnecessary, since arity == 0 guarantees - that the worker takes no arguments at all - and the wrapper takes no arguments and its RHS must be an application of the worker to zero-width-args only. - we lint these two items with an assertion that the datacon `hasNoNonZeroWidthArgs` We also update `isTagged` to use the new logic in determining the LFInfos of imported Ids. The creation of LFInfos for imported Ids and this detail are explained in Note [The LFInfo of Imported Ids]. Note that before the patch to those issues we would already consider these nullary wrappers to have `LFCon` lambda form info; but failed to re-construct that information in `mkLFImported` Closes #23231, #23146 (I've additionally batched some fixes to documentation I found while investigating this issue) - - - - - 0598f7f0 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 Make LFInfos for DataCons on construction As a result of the discussion in !10165, we decided to amend the previous commit which fixed the logic of `mkLFImported` with regard to datacon workers and wrappers. Instead of having the logic for the LFInfo of datacons be in `mkLFImported`, we now construct an LFInfo for all data constructors on GHC.Types.Id.Make and store it in the `lfInfo` field. See the new Note [LFInfo of DataCon workers and wrappers] and ammendments to Note [The LFInfo of Imported Ids] - - - - - 12294b22 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 Update Note [Core letrec invariant] Authored by @simonpj - - - - - e93ab972 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 Rename mkLFImported to importedIdLFInfo The `mkLFImported` sounded too much like a constructor of sorts, when really it got the `LFInfo` of an imported Id from its `lf_info` field when this existed, and otherwise returned a conservative estimate of that imported Id's LFInfo. This in contrast to functions such as `mkLFReEntrant` which really are about constructing an `LFInfo`. - - - - - e54d9259 by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 Enforce invariant on typePrimRepArgs in the types As part of the documentation effort in !10165 I came across this invariant on 'typePrimRepArgs' which is easily expressed at the type-level through a NonEmpty list. It allowed us to remove one panic. - - - - - b8fe6a0c by Rodrigo Mesquita at 2023-05-23T03:46:21-04:00 Merge outdated Note [Data con representation] into Note [Data constructor representation] Introduce new Note [Constructor applications in STG] to better support the merge, and reference it from the relevant bits in the STG syntax. - - - - - e1590ddc by Simon Peyton Jones at 2023-05-23T03:46:57-04:00 Add the SolverStage monad This refactoring makes a substantial improvement in the structure of the type-checker's constraint solver: #23070. Specifically: * Introduced the SolverStage monad. See GHC.Tc.Solver.Monad Note [The SolverStage monad] * Make each solver pipeline (equalities, dictionaries, irreds etc) deal with updating the inert set, as a separate SolverStage. There is sometimes special stuff to do, and it means that each full pipeline can have type SolverStage Void, indicating that they never return anything. * Made GHC.Tc.Solver.Equality.zonkEqTypes into a SolverStage. Much nicer. * Combined the remnants of GHC.Tc.Solver.Canonical and GHC.Tc.Solver.Interact into a new module GHC.Tc.Solver.Solve. (Interact and Canonical are removed.) * Gave the same treatment to dictionary and irred constraints as I have already done for equality constraints: * New types (akin to EqCt): IrredCt and DictCt * Ct is now just a simple sum type data Ct = CDictCan DictCt | CIrredCan IrredCt | CEqCan EqCt | CQuantCan QCInst | CNonCanonical CtEvidence * inert_dicts can now have the better type DictMap DictCt, instead of DictMap Ct; and similarly inert_irreds. * Significantly simplified the treatment of implicit parameters. Previously we had a number of special cases * interactGivenIP, an entire function * special case in maybeKickOut * special case in findDict, when looking up dictionaries But actually it's simpler than that. When adding a new Given, implicit parameter constraint to the InertSet, we just need to kick out any existing inert constraints that mention that implicit parameter. The main work is done in GHC.Tc.Solver.InertSet.delIPDict, along with its auxiliary GHC.Core.Predicate.mentionsIP. See Note [Shadowing of implicit parameters] in GHC.Tc.Solver.Dict. * Add a new fast-path in GHC.Tc.Errors.Hole.tcCheckHoleFit. See Note [Fast path for tcCheckHoleFit]. This is a big win in some cases: test hard_hole_fits gets nearly 40% faster (at compile time). * Add a new fast-path for solving /boxed/ equality constraints (t1 ~ t2). See Note [Solving equality classes] in GHC.Tc.Solver.Dict. This makes a big difference too: test T17836 compiles 40% faster. * Implement the PermissivePlan of #23413, which concerns what happens with insoluble Givens. Our previous treatment was wildly inconsistent as that ticket pointed out. A part of this, I simplified GHC.Tc.Validity.checkAmbiguity: now we simply don't run the ambiguity check at all if -XAllowAmbiguousTypes is on. Smaller points: * In `GHC.Tc.Errors.misMatchOrCND` instead of having a special case for insoluble /occurs/ checks, broaden in to all insouluble constraints. Just generally better. See Note [Insoluble mis-match] in that module. As noted above, compile time perf gets better. Here are the changes over 0.5% on Fedora. (The figures are slightly larger on Windows for some reason.) Metrics: compile_time/bytes allocated ------------------------------------- LargeRecord(normal) -0.9% MultiLayerModulesTH_OneShot(normal) +0.5% T11822(normal) -0.6% T12227(normal) -1.8% GOOD T12545(normal) -0.5% T13035(normal) -0.6% T15703(normal) -1.4% GOOD T16875(normal) -0.5% T17836(normal) -40.7% GOOD T17836b(normal) -12.3% GOOD T17977b(normal) -0.5% T5837(normal) -1.1% T8095(normal) -2.7% GOOD T9020(optasm) -1.1% hard_hole_fits(normal) -37.0% GOOD geo. mean -1.3% minimum -40.7% maximum +0.5% Metric Decrease: T12227 T15703 T17836 T17836b T8095 hard_hole_fits LargeRecord T9198 T13035 - - - - - 6abf3648 by Simon Peyton Jones at 2023-05-23T03:46:57-04:00 Avoid an assertion failure in abstractFloats The function GHC.Core.Opt.Simplify.Utils.abstractFloats was carelessly calling lookupIdSubst_maybe on a CoVar; but a precondition of the latter is being given an Id. In fact it's harmless to call it on a CoVar, but still, the precondition on lookupIdSubst_maybe makes sense, so I added a test for CoVars. This avoids a crash in a DEBUG compiler, but otherwise has no effect. Fixes #23426. - - - - - 838aaf4b by hainq at 2023-05-24T12:41:19-04:00 Migrate errors in GHC.Tc.Validity This patch migrates the error messages in GHC.Tc.Validity to use the new diagnostic infrastructure. It adds the constructors: - TcRnSimplifiableConstraint - TcRnArityMismatch - TcRnIllegalInstanceDecl, with sub-datatypes for HasField errors and fundep coverage condition errors. - - - - - 8539764b by Krzysztof Gogolewski at 2023-05-24T12:41:56-04:00 linear lint: Add missing processing of DEFAULT In this correct program f :: a %1 -> a f x = case x of x { _DEFAULT -> x } after checking the alternative we weren't popping the case binder 'x' from the usage environment, which meant that the lambda-bound 'x' was counted twice: in the scrutinee and (incorrectly) in the alternative. In fact, we weren't checking the usage of 'x' at all. Now the code for handling _DEFAULT is similar to the one handling data constructors. Fixes #23025. - - - - - ae683454 by Matthew Pickering at 2023-05-24T12:42:32-04:00 Remove outdated "Don't check hs-boot type family instances too early" note This note was introduced in 25b70a29f623 which delayed performing some consistency checks for type families. However, the change was reverted later in 6998772043a7f0b0360116eb5ffcbaa5630b21fb but the note was not removed. I found it confusing when reading to code to try and work out what special behaviour there was for hs-boot files (when in-fact there isn't any). - - - - - 44af57de by Matthew Pickering at 2023-05-24T12:43:08-04:00 rts: Define ticky macro stubs These macros have long been undefined which has meant we were missing reporting these allocations in ticky profiles. The most critical missing definition was TICK_ALLOC_HEAP_NOCTR which was missing all the RTS calls to allocate, this leads to a the overall ALLOC_RTS_tot number to be severaly underreported. Of particular interest though is the ALLOC_STACK_ctr and ALLOC_STACK_tot counters which are useful to tracking stack allocations. Fixes #23421 - - - - - b2dabe3a by Matthew Pickering at 2023-05-24T12:43:08-04:00 rts: ticky: Rename TICK_ALLOC_HEAP_NOCTR to TICK_ALLOC_RTS This macro increments the ALLOC_HEAP_tot and ALLOC_HEAP_ctr so it makes more sense to name it after that rather than the suffix NOCTR, whose meaning has been lost to the mists of time. - - - - - eac4420a by Ben Gamari at 2023-05-24T12:43:45-04:00 users guide: A few small mark-up fixes - - - - - a320ca76 by Rodrigo Mesquita at 2023-05-24T12:44:20-04:00 configure: Fix support check for response files. In failing to escape the '-o' in '-o\nconftest\nconftest.o\n' argument to printf, the writing of the arguments response file always failed. The fix is to pass the arguments after `--` so that they are treated positional arguments rather than flags to printf. Closes #23435 - - - - - f21ce0e4 by mangoiv at 2023-05-24T12:45:00-04:00 [feat] add .direnv to the .gitignore file - - - - - 36d5944d by Andrew Lelechenko at 2023-05-24T20:58:34-04:00 Add Data.List.unsnoc See https://github.com/haskell/core-libraries-committee/issues/165 for discussion - - - - - c0f2f9e3 by Bartłomiej Cieślar at 2023-05-24T20:59:14-04:00 Fix crash in backpack signature merging with -ddump-rn-trace In some cases, backpack signature merging could crash in addUsedGRE when -ddump-rn-trace was enabled, as pretty-printing the GREInfo would cause unavailable interfaces to be loaded. This commit fixes that issue by not pretty-printing the GREInfo in addUsedGRE when -ddump-rn-trace is enabled. Fixes #23424 Signed-off-by: Bartłomiej Cieślar <bcieslar2001@gmail.com> - - - - - 5a07d94a by Krzysztof Gogolewski at 2023-05-25T03:30:20-04:00 Add a regression test for #13981 The panic was fixed by 6998772043a7f0b. Fixes #13981. - - - - - 182df90e by Krzysztof Gogolewski at 2023-05-25T03:30:57-04:00 Add a test for #23355 It was fixed by !10061, so I'm adding it in the same group. - - - - - 1b31b039 by uhbif19 at 2023-05-25T12:08:28+02:00 Migrate errors in GHC.Rename.Splice GHC.Rename.Pat This commit migrates the errors in GHC.Rename.Splice and GHC.Rename.Pat to use the new diagnostic infrastructure. - - - - - 56abe494 by sheaf at 2023-05-25T12:09:55+02:00 Common up Template Haskell errors in TcRnMessage This commit commons up the various Template Haskell errors into a single constructor, TcRnTHError, of TcRnMessage. - - - - - a487ba9e by Krzysztof Gogolewski at 2023-05-25T14:35:56-04:00 Enable ghci tests for unboxed tuples The tests were originally skipped because ghci used not to support unboxed tuples/sums. - - - - - dc3422d4 by Matthew Pickering at 2023-05-25T18:57:19-04:00 rts: Build ticky GHC with single-threaded RTS The threaded RTS allows you to use ticky profiling but only for the counters in the generated code. The counters used in the C portion of the RTS are disabled. Updating the counters is also racy using the threaded RTS which can lead to misleading or incorrect ticky results. Therefore we change the hadrian flavour to build using the single-threaded RTS (mainly in order to get accurate C code counter increments) Fixes #23430 - - - - - fbc8e04e by sheaf at 2023-05-25T18:58:00-04:00 Propagate long-distance info in generated code When desugaring generated pattern matches, we skip pattern match checks. However, this ended up also discarding long-distance information, which might be needed for user-written sub-expressions. Example: ```haskell okay (GADT di) cd = let sr_field :: () sr_field = case getFooBar di of { Foo -> () } in case cd of { SomeRec _ -> SomeRec sr_field } ``` With sr_field a generated FunBind, we still want to propagate the outer long-distance information from the GADT pattern match into the checks for the user-written RHS of sr_field. Fixes #23445 - - - - - f8ced241 by Matthew Pickering at 2023-05-26T15:26:21-04:00 Introduce GHCiMessage to wrap GhcMessage By introducing a wrapped message type we can control how certain messages are printed in GHCi (to add extra information for example) - - - - - 58e554c1 by Matthew Pickering at 2023-05-26T15:26:22-04:00 Generalise UnknownDiagnostic to allow embedded diagnostics to access parent diagnostic options. * Split default diagnostic options from Diagnostic class into HasDefaultDiagnosticOpts class. * Generalise UnknownDiagnostic to allow embedded diagnostics to access options. The principle idea here is that when wrapping an error message (such as GHCMessage to make GHCiMessage) then we need to also be able to lift the configuration when overriding how messages are printed (see load' for an example). - - - - - b112546a by Matthew Pickering at 2023-05-26T15:26:22-04:00 Allow API users to wrap error messages created during 'load' This allows API users to configure how messages are rendered when they are emitted from the load function. For an example see how 'loadWithCache' is used in GHCi. - - - - - 2e4cf0ee by Matthew Pickering at 2023-05-26T15:26:22-04:00 Abstract cantFindError and turn Opt_BuildingCabal into a print-time option * cantFindError is abstracted so that the parts which mention specific things about ghc/ghci are parameters. The intention being that GHC/GHCi can specify the right values to put here but otherwise display the same error message. * The BuildingCabalPackage argument from GenericMissing is removed and turned into a print-time option. The reason for the error is not dependent on whether `-fbuilding-cabal-package` is passed, so we don't want to store that in the error message. - - - - - 34b44f7d by Matthew Pickering at 2023-05-26T15:26:22-04:00 error messages: Don't display ghci specific hints for missing packages Tickets like #22884 suggest that it is confusing that GHC used on the command line can suggest options which only work in GHCi. This ticket uses the error message infrastructure to override certain error messages which displayed GHCi specific information so that this information is only showed when using GHCi. The main annoyance is that we mostly want to display errors in the same way as before, but with some additional information. This means that the error rendering code has to be exported from the Iface/Errors/Ppr.hs module. I am unsure about whether the approach taken here is the best or most maintainable solution. Fixes #22884 - - - - - 05a1b626 by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Don't override existing metadata if version already exists. If a nightly pipeline runs twice for some reason for the same version then we really don't want to override an existing entry with new bindists. This could cause ABI compatability issues for users or break ghcup's caching logic. - - - - - fcbcb3cc by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Use proper API url for bindist download Previously we were using links from the web interface, but it's more robust and future-proof to use the documented links to the artifacts. https://docs.gitlab.com/ee/api/job_artifacts.html - - - - - 5b59c8fe by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Set Nightly and LatestNightly tags The latest nightly release needs the LatestNightly tag, and all other nightly releases need the Nightly tag. Therefore when the metadata is updated we need to replace all LatestNightly with Nightly.` - - - - - 914e1468 by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Download nightly metadata for correct date The metadata now lives in https://gitlab.haskell.org/ghc/ghcup-metadata with one metadata file per year. When we update the metadata we download and update the right file for the current year. - - - - - 16cf7d2e by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Download metadata and update for correct year something about pipeline date - - - - - 14792c4b by Matthew Pickering at 2023-05-26T15:26:58-04:00 ghcup-metadata: Don't skip CI On a push we now have a CI job which updates gitlab pages with the metadata files. - - - - - 1121bdd8 by Matthew Pickering at 2023-05-26T15:26:59-04:00 ghcup-metadata: Add --date flag to specify the release date The ghcup-metadata now has a viReleaseDay field which needs to be populated with the day of the release. - - - - - bc478bee by Matthew Pickering at 2023-05-26T15:26:59-04:00 ghcup-metadata: Add dlOutput field ghcup now requires us to add this field which specifies where it should download the bindist to. See https://gitlab.haskell.org/ghc/ghcup-metadata/-/issues/1 for some more discussion. - - - - - 2bdbd9da by Josh Meredith at 2023-05-26T15:27:35-04:00 JS: Convert rendering to use HLine instead of SDoc (#22455) - - - - - abd9e37c by Norman Ramsey at 2023-05-26T15:28:12-04:00 testsuite: add WasmControlFlow test This patch adds the WasmControlFlow test to test the wasm backend's relooper component. - - - - - 07f858eb by Sylvain Henry at 2023-05-26T15:28:53-04:00 Factorize getLinkDeps Prepare reuse of getLinkDeps for TH implementation in the JS backend (cf #22261 and review of !9779). - - - - - fad9d092 by Oleg Grenrus at 2023-05-27T13:38:08-04:00 Change GHC.Driver.Session import to .DynFlags Also move targetPlatform selector Plenty of GHC needs just DynFlags. Even more can be made to use .DynFlags if more selectors is migrated. This is a low hanging fruit. - - - - - 69fdbece by Alan Zimmerman at 2023-05-27T13:38:45-04:00 EPA: Better fix for #22919 The original fix for #22919 simply removed the ability to match up prior comments with the first declaration in the file. Restore it, but add a check that the comment is on a single line, by ensuring that it comes immediately prior to the next thing (comment or start of declaration), and that the token preceding it is not on the same line. closes #22919 - - - - - 0350b186 by Josh Meredith at 2023-05-29T12:46:27+00:00 Remove JavaScriptFFI from --supported-extensions for non-JS targets (#11214) - - - - - b4816919 by Matthew Pickering at 2023-05-30T17:07:43-04:00 testsuite: Pass -kb16k -kc128k for performance tests Setting a larger stack chunk size gives a greater protection from stack thrashing (where the repeated overflow/underflow allocates a lot of stack chunks which sigificantly impact allocations). This stabilises some tests against differences cause by more things being pushed onto the stack. The performance tests are generally testing work done by the compiler, using allocation as a proxy, so removing/stabilising the allocations due to the stack gives us more stable tests which are also more sensitive to actual changes in compiler performance. The tests which increase are ones where we compile a lot of modules, and for each module we spawn a thread to compile the module in. Therefore increasing these numbers has a multiplying effect on these tests because there are many more stacks which we can increase in size. The most significant improvements though are cases such as T8095 which reduce significantly in allocations (30%). This isn't a performance improvement really but just helps stabilise the test against this threshold set by the defaults. Fixes #23439 ------------------------- Metric Decrease: InstanceMatching T14683 T8095 T9872b_defer T9872d T9961 hie002 T19695 T3064 Metric Increase: MultiLayerModules T13701 T14697 ------------------------- - - - - - 6629f1c5 by Ben Gamari at 2023-05-30T17:08:20-04:00 Move via-C flags into GHC These were previously hardcoded in configure (with no option for overriding them) and simply passed onto ghc through the settings file. Since configure already guarantees gcc supports those flags, we simply move them into GHC. - - - - - 981e5e11 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00 Allow CPR on unrestricted constructors Per the new `Note [Linting linearity]`, we want optimisations over trying to preserve linearity. This will allow CPR to handle `Ur`, in particular. - - - - - bf9344d2 by Arnaud Spiwack at 2023-05-31T08:34:33-04:00 Push coercions across multiplicity boundaries Per the new `Note [Linting linearity]`, we want optimisations over trying to preserve linearity. This will avoid preventing inlinings and reductions and make linear programs more efficient. - - - - - d56dd695 by sheaf at 2023-05-31T11:37:12-04:00 Data.Bag: add INLINEABLE to polymorphic functions This commit allows polymorphic methods in GHC.Data.Bag to be specialised, avoiding having to pass explicit dictionaries when they are instantiated with e.g. a known monad. - - - - - 5366cd35 by sheaf at 2023-05-31T11:37:12-04:00 Split off TcBinderStack into its own module This commit splits off TcBinderStack into its own module, to avoid module cycles: we might want to refer to it without also pulling in the TcM monad. - - - - - 09d4d307 by sheaf at 2023-05-31T11:37:12-04:00 Split off TcRef into its own module This helps avoid pull in the full TcM monad when we just want access to mutable references in the typechecker. This facilitates later patches which introduce a slimmed down TcM monad for zonking. - - - - - 88cc19b3 by sheaf at 2023-05-31T11:37:12-04:00 Introduce Codensity monad The Codensity monad is useful to write state-passing computations in continuation-passing style, e.g. to implement a State monad as continuation-passing style over a Reader monad. - - - - - f62d8195 by sheaf at 2023-05-31T11:37:12-04:00 Restructure the zonker This commit splits up the zonker into a few separate components, described in Note [The structure of the zonker] in `GHC.Tc.Zonk.Type`. 1. `GHC.Tc.Zonk.Monad` introduces a pared-down `TcM` monad, `ZonkM`, which has enough information for zonking types. This allows us to refactor `ErrCtxt` to use `ZonkM` instead of `TcM`, which guarantees we don't throw an error while reporting an error. 2. `GHC.Tc.Zonk.Env` is the new home of `ZonkEnv`, and also defines two zonking monad transformers, `ZonkT` and `ZonkBndrT`. `ZonkT` is a reader monad transformer over `ZonkEnv`. `ZonkBndrT m` is the codensity monad over `ZonkT m`. `ZonkBndrT` is used for computations that accumulate binders in the `ZonkEnv`. 3. `GHC.Tc.Zonk.TcType` contains the code for zonking types, for use in the typechecker. It uses the `ZonkM` monad. 4. `GHC.Tc.Zonk.Type` contains the code for final zonking to `Type`, which has been refactored to use `ZonkTcM = ZonkT TcM` and `ZonkBndrTcM = ZonkBndrT TcM`. Allocations slightly decrease on the whole due to using continuation-passing style instead of manual state passing of ZonkEnv in the final zonking to Type. ------------------------- Metric Decrease: T4029 T8095 T14766 T15304 hard_hole_fits RecordUpdPerf Metric Increase: T10421 ------------------------- - - - - - 70526f5b by mimi.vx at 2023-05-31T11:37:53-04:00 Update rdt-theme to latest upstream version Fixes https://gitlab.haskell.org/ghc/ghc/-/issues/23444 - - - - - f3556d6c by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Restructure IPE buffer layout Reference ticket #21766 This commit restructures IPE buffer list entries to not contain references to their corresponding info tables. IPE buffer list nodes now point to two lists of equal length, one holding the list of info table pointers and one holding the corresponding entries for each info table. This will allow the entry data to be compressed without losing the references to the info tables. - - - - - 5d1f2411 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Add IPE compression to configure Reference ticket #21766 Adds an `--enable-ipe-data-compreesion` flag to the configure script which will check for libzstd and set the appropriate flags to allow for IPE data compression in the compiler - - - - - b7a640ac by Finley McIlwaine at 2023-06-01T04:53:12-04:00 IPE data compression Reference ticket #21766 When IPE data compression is enabled, compress the emitted IPE buffer entries and decompress them in the RTS. - - - - - 5aef5658 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Fix libzstd detection in configure and RTS Ensure that `HAVE_LIBZSTD` gets defined to either 0 or 1 in all cases and properly check that before IPE data decompression in the RTS. See ticket #21766. - - - - - 69563c97 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Add note describing IPE data compression See ticket #21766 - - - - - 7872e2b6 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Fix byte order of IPE data, fix IPE tests Make sure byte order of written IPE buffer entries matches target. Make sure the IPE-related tests properly access the fields of IPE buffer entry nodes with the new IPE layout. This commit also introduces checks to avoid importing modules if IPE compression is not enabled. See ticket #21766. - - - - - 0e85099b by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Fix IPE data decompression buffer allocation Capacity of buffers allocated for decompressed IPE data was incorrect due to a misuse of the `ZSTD_findFrameCompressedSize` function. Fix by always storing decompressed size of IPE data in IPE buffer list nodes and using `ZSTD_findFrameCompressedSize` to determine the size of the compressed data. See ticket #21766 - - - - - a0048866 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Add optional dependencies to ./configure output Changes the configure script to indicate whether libnuma, libzstd, or libdw are being used as dependencies due to their optional features being enabled. - - - - - 09d93bd0 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Add IPE-enabled builds to CI - Adds an IPE job to the CI pipeline which is triggered by the ~IPE label - Introduces CI logic to enable IPE data compression - Enables uncompressed IPE data on debug CI job - Regenerates jobs.yaml MR https://gitlab.haskell.org/ghc/ci-images/-/merge_requests/112 on the images repository is meant to ensure that the proper images have libzstd-dev installed. - - - - - 3ded9a1c by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Update user's guide and release notes, small fixes Add mention of IPE data compression to user's guide and the release notes for 9.8.1. Also note the impact compression has on binary size in both places. Change IpeBufferListNode compression check so only the value `1` indicates compression. See ticket #21766 - - - - - 41b41577 by Finley McIlwaine at 2023-06-01T04:53:12-04:00 Remove IPE enabled builds from CI We don't need to explicitly specify the +ipe transformer to test IPE data since there are tests which manually enable IPE information. This commit does leave zstd IPE data compression enabled on the debian CI jobs. - - - - - 982bef3a by Krzysztof Gogolewski at 2023-06-01T04:53:49-04:00 Fix build with 9.2 GHC.Tc.Zonk.Type uses an equality constraint. ghc.nix currently provides 9.2. - - - - - 1c96bc3d by Krzysztof Gogolewski at 2023-06-01T10:56:11-04:00 Output Lint errors to stderr instead of stdout This is a continuation of 7b095b99, which fixed warnings but not errors. Refs #13342 - - - - - 8e81f140 by sheaf at 2023-06-01T10:56:51-04:00 Refactor lookupExactOrOrig & friends This refactors the panoply of renamer lookup functions relating to lookupExactOrOrig to more graciously handle Exact and Orig names. In particular, we avoid the situation in which we would add Exact/Orig GREs to the tcg_used_gres field, which could cause a panic in bestImport like in #23240. Fixes #23428 - - - - - 5d415bfd by Krzysztof Gogolewski at 2023-06-01T10:57:31-04:00 Use the one-shot trick for UM and RewriteM functors As described in Note [The one-shot state monad trick], we shouldn't use derived Functor instances for monads using one-shot. This was done for most of them, but UM and RewriteM were missed. - - - - - 2c38551e by Krzysztof Gogolewski at 2023-06-01T10:58:08-04:00 Fix testsuite skipping Lint setTestOpts() is used to modify the test options for an entire .T file, rather than a single test. If there was a test using collect_compiler_stats, all of the tests in the same file had lint disabled. Fixes #21247 - - - - - 00a1e50b by Krzysztof Gogolewski at 2023-06-01T10:58:44-04:00 Add testcases for already fixed #16432 They were fixed by 40c7daed0. Fixes #16432 - - - - - f6e060cc by Krzysztof Gogolewski at 2023-06-02T09:07:25-04:00 cleanup: Remove unused field from SelfBoot It is no longer needed since Note [Extra dependencies from .hs-boot files] was deleted in 6998772043. I've also added tildes to Note headers, otherwise they're not detected by the linter. - - - - - 82eacab6 by sheaf at 2023-06-02T09:08:01-04:00 Delete GHC.Tc.Utils.Zonk This module was split up into GHC.Tc.Zonk.Type and GHC.Tc.Zonk.TcType in commit f62d8195, but I forgot to delete the original module - - - - - 4a4eb761 by Ben Gamari at 2023-06-02T23:53:21-04:00 base: Add build-order import of GHC.Types in GHC.IO.Handle.Types For reasons similar to those described in Note [Depend on GHC.Num.Integer]. Fixes #23411. - - - - - f53ac0ae by Sylvain Henry at 2023-06-02T23:54:01-04:00 JS: fix and enhance non-minimized code generation (#22455) Flag -ddisable-js-minimizer was producing invalid code. Fix that and also a few other things to generate nicer JS code for debugging. The added test checks that we don't regress when using the flag. - - - - - f7744e8e by Andrey Mokhov at 2023-06-03T16:49:44-04:00 [hadrian] Fix multiline synopsis rendering - - - - - b2c745db by Andrew Lelechenko at 2023-06-03T16:50:23-04:00 Elaborate on performance properties of Data.List.++ - - - - - 7cd8a61e by Matthew Pickering at 2023-06-05T11:46:23+01:00 Big TcLclEnv and CtLoc refactoring The overall goal of this refactoring is to reduce the dependency footprint of the parser and syntax tree. Good reasons include: - Better module graph parallelisability - Make it easier to migrate error messages without introducing module loops - Philosophically, there's not reason for the AST to depend on half the compiler. One of the key edges which added this dependency was

GHC.Hs.Expr -> GHC.Tc.Types (TcLclEnv)

As this in turn depending on TcM which depends on HscEnv and so on. Therefore the goal of this patch is to move `TcLclEnv` out of `GHC.Tc.Types` so that `GHC.Hs.Expr` can import TcLclEnv without incurring a huge dependency chain. The changes in this patch are: * Move TcLclEnv from GHC.Tc.Types to GHC.Tc.Types.LclEnv * Create new smaller modules for the types used in TcLclEnv New Modules: - GHC.Tc.Types.ErrCtxt - GHC.Tc.Types.BasicTypes - GHC.Tc.Types.TH - GHC.Tc.Types.LclEnv - GHC.Tc.Types.CtLocEnv - GHC.Tc.Errors.Types.PromotionErr Removed Boot File: - {-# SOURCE #-} GHC.Tc.Types * Introduce TcLclCtxt, the part of the TcLclEnv which doesn't participate in restoreLclEnv. * Replace TcLclEnv in CtLoc with specific CtLocEnv which is defined in GHC.Tc.Types.CtLocEnv. Use CtLocEnv in Implic and CtLoc to record the location of the implication and constraint. By splitting up TcLclEnv from GHC.Tc.Types we allow GHC.Hs.Expr to no longer depend on the TcM monad and all that entails. Fixes #23389 #23409 - - - - - 3d8d39d1 by Matthew Pickering at 2023-06-05T11:46:23+01:00 Remove dependency of GHC.Tc.Utils.TcType on GHC.Driver.Session This removes the usage of DynFlags from Tc.Utils.TcType so that it no longer depends on GHC.Driver.Session. In general we don't want anything which is a dependency of Language.Haskell.Syntax to depend on GHC.Driver.Session and removing this edge gets us closer to that goal. - - - - - 18db5ada by Matthew Pickering at 2023-06-05T11:46:23+01:00 Move isIrrefutableHsPat to GHC.Rename.Utils and rename to isIrrefutableHsPatRn This removes edge from GHC.Hs.Pat to GHC.Driver.Session, which makes Language.Haskell.Syntax end up depending on GHC.Driver.Session. - - - - - 12919dd5 by Matthew Pickering at 2023-06-05T11:46:23+01:00 Remove dependency of GHC.Tc.Types.Constraint on GHC.Driver.Session - - - - - eb852371 by Matthew Pickering at 2023-06-05T11:46:24+01:00 hole fit plugins: Split definition into own module The hole fit plugins are defined in terms of TcM, a type we want to avoid depending on from `GHC.Tc.Errors.Types`. By moving it into its own module we can remove this dependency. It also simplifies the necessary boot file. - - - - - 9e5246d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00 Move GHC.Core.Opt.CallerCC Types into separate module This allows `GHC.Driver.DynFlags` to depend on these types without depending on CoreM and hence the entire simplifier pipeline. We can also remove a hs-boot file with this change. - - - - - 52d6a7d7 by Matthew Pickering at 2023-06-05T11:46:24+01:00 Remove unecessary SOURCE import - - - - - 698d160c by Matthew Pickering at 2023-06-05T11:46:24+01:00 testsuite: Accept new output for CountDepsAst and CountDepsParser tests These are in a separate commit as the improvement to these tests is the cumulative effect of the previous set of patches rather than just the responsibility of the last one in the patchset. - - - - - 58ccf02e by sheaf at 2023-06-05T16:00:47-04:00 TTG: only allow VarBind at GhcTc The VarBind constructor of HsBind is only used at the GhcTc stage. This commit makes that explicit by setting the extension field of VarBind to be DataConCantHappen at all other stages. This allows us to delete a dead code path in GHC.HsToCore.Quote.rep_bind, and remove some panics. - - - - - 54b83253 by Matthew Craven at 2023-06-06T12:59:25-04:00 Generate Addr# access ops programmatically The existing utils/genprimopcode/gen_bytearray_ops.py was relocated and extended for this purpose. Additionally, hadrian now knows about this script and uses it when generating primops.txt - - - - - ecadbc7e by Matthew Pickering at 2023-06-06T13:00:01-04:00 ghcup-metadata: Only add Nightly tag when replacing LatestNightly Previously we were always adding the Nightly tag, but this led to all the previous builds getting an increasing number of nightly tags over time. Now we just add it once, when we remove the LatestNightly tag. - - - - - 4aea0a72 by Vladislav Zavialov at 2023-06-07T12:06:46+02:00 Invisible binders in type declarations (#22560) This patch implements @k-binders introduced in GHC Proposal #425 and guarded behind the TypeAbstractions extension: type D :: forall k j. k -> j -> Type data D @k @j a b = ... ^^ ^^ To represent the new syntax, we modify LHsQTyVars as follows: - hsq_explicit :: [LHsTyVarBndr () pass] + hsq_explicit :: [LHsTyVarBndr (HsBndrVis pass) pass] HsBndrVis is a new data type that records the distinction between type variable binders written with and without the @ sign: data HsBndrVis pass = HsBndrRequired | HsBndrInvisible (LHsToken "@" pass) The rest of the patch updates GHC, template-haskell, and haddock to handle the new syntax. Parser: The PsErrUnexpectedTypeAppInDecl error message is removed. The syntax it used to reject is now permitted. Renamer: The @ sign does not affect the scope of a binder, so the changes to the renamer are minimal. See rnLHsTyVarBndrVisFlag. Type checker: There are three code paths that were updated to deal with the newly introduced invisible type variable binders: 1. checking SAKS: see kcCheckDeclHeader_sig, matchUpSigWithDecl 2. checking CUSK: see kcCheckDeclHeader_cusk 3. inference: see kcInferDeclHeader, rejectInvisibleBinders Helper functions bindExplicitTKBndrs_Q_Skol and bindExplicitTKBndrs_Q_Tv are generalized to work with HsBndrVis. Updates the haddock submodule. Metric Increase: MultiLayerModulesTH_OneShot Co-authored-by: Simon Peyton Jones <simon.peytonjones@gmail.com> - - - - - b7600997 by Josh Meredith at 2023-06-07T13:10:21-04:00 JS: clean up FFI 'fat arrow' calls in base:System.Posix.Internals (#23481) - - - - - e5d3940d by Sebastian Graf at 2023-06-07T18:01:28-04:00 Update CODEOWNERS - - - - - 960ef111 by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Remove IPE enabled builds from CI" This reverts commit 41b41577c8a28c236fa37e8f73aa1c6dc368d951. - - - - - bad1c8cc by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Update user's guide and release notes, small fixes" This reverts commit 3ded9a1cd22f9083f31bc2f37ee1b37f9d25dab7. - - - - - 12726d90 by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Add IPE-enabled builds to CI" This reverts commit 09d93bd0305b0f73422ce7edb67168c71d32c15f. - - - - - dbdd989d by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Add optional dependencies to ./configure output" This reverts commit a00488665cd890a26a5564a64ba23ff12c9bec58. - - - - - 240483af by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Fix IPE data decompression buffer allocation" This reverts commit 0e85099b9316ee24565084d5586bb7290669b43a. - - - - - 9b8c7dd8 by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Fix byte order of IPE data, fix IPE tests" This reverts commit 7872e2b6f08ea40d19a251c4822a384d0b397327. - - - - - 3364379b by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Add note describing IPE data compression" This reverts commit 69563c97396b8fde91678fae7d2feafb7ab9a8b0. - - - - - fda30670 by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Fix libzstd detection in configure and RTS" This reverts commit 5aef5658ad5fb96bac7719710e0ea008bf7b62e0. - - - - - 1cbcda9a by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "IPE data compression" This reverts commit b7a640acf7adc2880e5600d69bcf2918fee85553. - - - - - fb5e99aa by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Add IPE compression to configure" This reverts commit 5d1f2411f4becea8650d12d168e989241edee186. - - - - - 2cdcb3a5 by Matthew Pickering at 2023-06-07T18:02:04-04:00 Revert "Restructure IPE buffer layout" This reverts commit f3556d6cefd3d923b36bfcda0c8185abb1d11a91. - - - - - 2b0c9f5e by Simon Peyton Jones at 2023-06-08T07:52:34+00:00 Don't report redundant Givens from quantified constraints This fixes #23323 See (RC4) in Note [Tracking redundant constraints] - - - - - 567b32e1 by David Binder at 2023-06-08T18:41:29-04:00 Update the outdated instructions in HACKING.md on how to compile GHC - - - - - 2b1a4abe by Ryan Scott at 2023-06-09T07:56:58-04:00 Restore mingwex dependency on Windows This partially reverts some of the changes in !9475 to make `base` and `ghc-prim` depend on the `mingwex` library on Windows. It also restores the RTS's stubs for `mingwex`-specific symbols such as `_lock_file`. This is done because the C runtime provides `libmingwex` nowadays, and moreoever, not linking against `mingwex` requires downstream users to link against it explicitly in difficult-to-predict circumstances. Better to always link against `mingwex` and prevent users from having to do the guesswork themselves. See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10360#note_495873 for the discussion that led to this. - - - - - 28954758 by Ryan Scott at 2023-06-09T07:56:58-04:00 RtsSymbols.c: Remove mingwex symbol stubs As of !9475, the RTS now links against `ucrt` instead of `msvcrt` on Windows, which means that the RTS no longer needs to declare stubs for the `__mingw_*` family of symbols. Let's remove these stubs to avoid confusion. Fixes #23309. - - - - - 3ab0155b by Ryan Scott at 2023-06-09T07:57:35-04:00 Consistently use validity checks for TH conversion of data constructors We were checking that TH-spliced data declarations do not look like this: ```hs data D :: Type = MkD Int ``` But we were only doing so for `data` declarations' data constructors, not for `newtype`s, `data instance`s, or `newtype instance`s. This patch factors out the necessary validity checks into its own `cvtDataDefnCons` function and uses it in all of the places where it needs to be. Fixes #22559. - - - - - a24b83dd by Matthew Pickering at 2023-06-09T15:19:00-04:00 Fix behaviour of -keep-tmp-files when used in OPTIONS_GHC pragma This fixes the behaviour of -keep-tmp-files when used in an OPTIONS_GHC pragma for files with module level scope. Instead of simple not deleting the files, we also need to remove them from the TmpFs so they are not deleted later on when all the other files are deleted. There are additional complications because you also need to remove the directory where these files live from the TmpFs so we don't try to delete those later either. I added two tests. 1. Tests simply that -keep-tmp-files works at all with a single module and --make mode. 2. The other tests that temporary files are deleted for other modules which don't enable -keep-tmp-files. Fixes #23339 - - - - - dcf32882 by Matthew Pickering at 2023-06-09T15:19:00-04:00 withDeferredDiagnostics: When debugIsOn, write landmine into IORef to catch use-after-free. Ticket #23305 reports an error where we were attempting to use the logger which was created by withDeferredDiagnostics after its scope had ended. This problem would have been caught by this patch and a validate build: ``` +*** Exception: Use after free +CallStack (from HasCallStack): + error, called at compiler/GHC/Driver/Make.hs:<line>:<column> in <package-id>:GHC.Driver.Make ``` This general issue is tracked by #20981 - - - - - 432c736c by Matthew Pickering at 2023-06-09T15:19:00-04:00 Don't return complete HscEnv from upsweep By returning a complete HscEnv from upsweep the logger (as introduced by withDeferredDiagnostics) was escaping the scope of withDeferredDiagnostics and hence we were losing error messages. This is reminiscent of #20981, which also talks about writing errors into messages after their scope has ended. See #23305 for details. - - - - - 26013cdc by Alexander McKenna at 2023-06-09T15:19:41-04:00 Dump `SpecConstr` specialisations separately Introduce a `-ddump-spec-constr` flag which debugs specialisations from `SpecConstr`. These are no longer shown when you use `-ddump-spec`. - - - - - 4639100b by Matthew Pickering at 2023-06-09T18:50:43-04:00 Add role annotations to SNat, SSymbol and SChar Ticket #23454 explained it was possible to implement unsafeCoerce because SNat was lacking a role annotation. As these are supposed to be singleton types but backed by an efficient representation the correct annotation is nominal to ensure these kinds of coerces are forbidden. These annotations were missed from https://github.com/haskell/core-libraries-committee/issues/85 which was implemented in 532de36870ed9e880d5f146a478453701e9db25d. CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/170 Fixes #23454 - - - - - 9c0dcff7 by Matthew Pickering at 2023-06-09T18:51:19-04:00 Remove non-existant bytearray-ops.txt.pp file from ghc.cabal.in This broke the sdist generation. Fixes #23489 - - - - - 273ff0c7 by David Binder at 2023-06-09T18:52:00-04:00 Regression test T13438 is no longer marked as "expect_broken" in the testsuite driver. - - - - - b84a2900 by Andrei Borzenkov at 2023-06-10T08:27:28-04:00 Fix -Wterm-variable-capture scope (#23434) -Wterm-variable-capture wasn't accordant with type variable scoping in associated types, in type classes. For example, this code produced the warning: k = 12 class C k a where type AT a :: k -> Type I solved this issue by reusing machinery of newTyVarNameRn function that is accordand with associated types: it does lookup for each free type variable when we are in the type class context. And in this patch I use result of this work to make sure that -Wterm-variable-capture warns only on implicitly quantified type variables. - - - - - 9d1a8d87 by Jorge Mendes at 2023-06-10T08:28:10-04:00 Remove redundant case statement in rts/js/mem.js. - - - - - a1f350e2 by Oleg Grenrus at 2023-06-13T09:42:16-04:00 Change WarningWithFlag to plural WarningWithFlags Resolves #22825 Now each diagnostic can name multiple different warning flags for its reason. There is currently one use case: missing signatures. Currently we need to check which warning flags are enabled when generating the diagnostic, which is against the declarative nature of the diagnostic framework. This patch allows a warning diagnostic to have multiple warning flags, which makes setup more declarative. The WarningWithFlag pattern synonym is added for backwards compatibility The 'msgEnvReason' field is added to MsgEnvelope to store the `ResolvedDiagnosticReason`, which accounts for the enabled flags, and then that is used for pretty printing the diagnostic. - - - - - ec01f0ec by Matthew Pickering at 2023-06-13T09:42:59-04:00 Add a test Way for running ghci with Core optimizations Tracking ticket: #23059 This runs compile_and_run tests with optimised code with bytecode interpreter Changed submodules: hpc, process Co-authored-by: Torsten Schmits <git@tryp.io> - - - - - c6741e72 by Rodrigo Mesquita at 2023-06-13T09:43:38-04:00 Configure -Qunused-arguments instead of hardcoding it When GHC invokes clang, it currently passes -Qunused-arguments to discard warnings resulting from GHC using multiple options that aren't used. In this commit, we configure -Qunused-arguments into the Cc options instead of checking if the compiler is clang at runtime and hardcoding the flag into GHC. This is part of the effort to centralise toolchain information in toolchain target files at configure time with the end goal of a runtime retargetable GHC. This also means we don't need to call getCompilerInfo ever, which improves performance considerably (see !10589). Metric Decrease: PmSeriesG T10421 T11303b T12150 T12227 T12234 T12425 T13035 T13253-spj T13386 T15703 T16875 T17836b T17977 T17977b T18140 T18282 T18304 T18698a T18698b T18923 T20049 T21839c T3064 T5030 T5321FD T5321Fun T5837 T6048 T9020 T9198 T9872d T9961 - - - - - 0128db87 by Victor Cacciari Miraldo at 2023-06-13T09:44:18-04:00 Improve docs for Data.Fixed; adds 'realToFrac' as an option for conversion between different precisions. - - - - - 95b69cfb by Ryan Scott at 2023-06-13T09:44:55-04:00 Add regression test for #23143 !10541, the fix for #23323, also fixes #23143. Let's add a regression test to ensure that it stays fixed. Fixes #23143. - - - - - ed2dbdca by Emily Martins at 2023-06-13T09:45:37-04:00 delete GHCi.UI.Tags module and remove remaining references Co-authored-by: Tilde Rose <t1lde@protonmail.com> - - - - - c90d96e4 by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00 Add regression test for 17328 - - - - - de58080c by Victor Cacciari Miraldo at 2023-06-13T09:46:26-04:00 Skip checking whether constructors are in scope when deriving newtype instances. Fixes #17328 - - - - - 5e3c2b05 by Philip Hazelden at 2023-06-13T09:47:07-04:00 Don't suggest `DeriveAnyClass` when instance can't be derived. Fixes #19692. Prototypical cases: class C1 a where x1 :: a -> Int data G1 = G1 deriving C1 class C2 a where x2 :: a -> Int x2 _ = 0 data G2 = G2 deriving C2 Both of these used to give this suggestion, but for C1 the suggestion would have failed (generated code with undefined methods, which compiles but warns). Now C2 still gives the suggestion but C1 doesn't. - - - - - 80a0b099 by David Binder at 2023-06-13T09:47:49-04:00 Add testcase for error GHC-00711 to testsuite - - - - - e4b33a1d by Oleg Grenrus at 2023-06-14T07:01:21-04:00 Add -Wmissing-poly-kind-signatures Implements #22826 This is a restricted version of -Wmissing-kind-signatures shown only for polykinded types. - - - - - f8395b94 by doyougnu at 2023-06-14T07:02:01-04:00 ci: special case in req_host_target_ghc for JS - - - - - b852a5b6 by Gergő Érdi at 2023-06-14T07:02:42-04:00 When forcing a `ModIface`, force the `MINIMAL` pragmas in class definitions Fixes #23486 - - - - - c29b45ee by Krzysztof Gogolewski at 2023-06-14T07:03:19-04:00 Add a testcase for #20076 Remove 'recursive' in the error message, since the error can arise without recursion. - - - - - b80ef202 by Krzysztof Gogolewski at 2023-06-14T07:03:56-04:00 Use tcInferFRR to prevent bad generalisation Fixes #23176 - - - - - bd8ef37d by Matthew Pickering at 2023-06-14T07:04:31-04:00 ci: Add dependenices on necessary aarch64 jobs for head.hackage ci These need to be added since we started testing aarch64 on head.hackage CI. The jobs will sometimes fail because they will start before the relevant aarch64 job has finished. Fixes #23511 - - - - - a0c27cee by Vladislav Zavialov at 2023-06-14T07:05:08-04:00 Add standalone kind signatures for Code and TExp CodeQ and TExpQ already had standalone kind signatures even before this change: type TExpQ :: TYPE r -> Kind.Type type CodeQ :: TYPE r -> Kind.Type Now Code and TExp have signatures too: type TExp :: TYPE r -> Kind.Type type Code :: (Kind.Type -> Kind.Type) -> TYPE r -> Kind.Type This is a stylistic change. - - - - - e70c1245 by Tom Ellis at 2023-06-14T07:05:48-04:00 Warn that GHC.TypeLits.Internal should not be used - - - - - 100650e3 by Tom Ellis at 2023-06-14T07:05:48-04:00 Warn that GHC.TypeNats.Internal should not be used - - - - - 078250ef by Jacco Krijnen at 2023-06-14T17:17:53-04:00 Add more flags for dumping core passes (#23491) - - - - - 1b7604af by Jacco Krijnen at 2023-06-14T17:17:53-04:00 Add tests for dumping flags (#23491) - - - - - 42000000 by Sebastian Graf at 2023-06-14T17:18:29-04:00 Provide a demand signature for atomicModifyMutVar.# (#23047) Fixes #23047 - - - - - 8f27023b by Ben Gamari at 2023-06-15T03:10:24-04:00 compiler: Cross-reference Note [StgToJS design] In particular, the numeric representations are quite useful context in a few places. - - - - - a71b60e9 by Andrei Borzenkov at 2023-06-15T03:11:00-04:00 Implement the -Wimplicit-rhs-quantification warning (#23510) GHC Proposal #425 "Invisible binders in type declarations" forbids implicit quantification of type variables that occur free on the right-hand side of a type synonym but are not mentioned on the left-hand side. The users are expected to rewrite this using invisible binders: type T1 :: forall a . Maybe a type T1 = 'Nothing :: Maybe a -- old type T1 @a = 'Nothing :: Maybe a -- new Since the @k-binders are a new feature, we need to wait for three releases before we require the use of the new syntax. In the meantime, we ought to provide users with a new warning, -Wimplicit-rhs-quantification, that would detect when such implicit quantification takes place, and include it in -Wcompat. - - - - - 0078dd00 by Sven Tennie at 2023-06-15T03:11:36-04:00 Minor refactorings to mkSpillInstr and mkLoadInstr Better error messages. And, use the existing `off` constant to reduce duplication. - - - - - 1792b57a by doyougnu at 2023-06-15T03:12:17-04:00 JS: merge util modules Merge Core and StgUtil modules for StgToJS pass. Closes: #23473 - - - - - 469ff08b by Vladislav Zavialov at 2023-06-15T03:12:57-04:00 Check visibility of nested foralls in can_eq_nc (#18863) Prior to this change, `can_eq_nc` checked the visibility of the outermost layer of foralls: forall a. forall b. forall c. phi1 forall x. forall y. forall z. phi2 ^^ up to here Then it delegated the rest of the work to `can_eq_nc_forall`, which split off all foralls: forall a. forall b. forall c. phi1 forall x. forall y. forall z. phi2 ^^ up to here This meant that some visibility flags were completely ignored. We fix this oversight by moving the check to `can_eq_nc_forall`. - - - - - 59c9065b by Luite Stegeman at 2023-06-15T03:13:37-04:00 JS: use regular mask for blocking IO Blocking IO used uninterruptibleMask which should make any thread blocked on IO unreachable by async exceptions (such as those from timeout). This changes it to a regular mask. It's important to note that the nodejs runtime does not actually interrupt the blocking IO when the Haskell thread receives an async exception, and that file positions may be updated and buffers may be written after the Haskell thread has already resumed. Any file descriptor affected by an async exception interruption should therefore be used with caution. - - - - - 907c06c3 by Luite Stegeman at 2023-06-15T03:13:37-04:00 JS: nodejs: do not set 'readable' handler on stdin at startup The Haskell runtime used to install a 'readable' handler on stdin at startup in nodejs. This would cause the nodejs system to start buffering the stream, causing data loss if the stdin file descriptor is passed to another process. This change delays installation of the 'readable' handler until the first read of stdin by Haskell code. - - - - - a54b40a9 by Luite Stegeman at 2023-06-15T03:13:37-04:00 JS: reserve one more virtual (negative) file descriptor This is needed for upcoming support of the process package - - - - - 78cd1132 by Andrei Borzenkov at 2023-06-15T11:16:11+04:00 Report scoped kind variables at the type-checking phase (#16635) This patch modifies the renamer to respect ScopedTypeVariables in kind signatures. This means that kind variables bound by the outermost `forall` now scope over the type: type F = '[Right @a @() () :: forall a. Either a ()] -- ^^^^^^^^^^^^^^^ ^^^ -- in scope here bound here However, any use of such variables is a type error, because we don't have type-level lambdas to bind them in Core. This is described in the new Note [Type variable scoping errors during type check] in GHC.Tc.Types. - - - - - 4a41ba75 by Sylvain Henry at 2023-06-15T18:09:15-04:00 JS: testsuite: use correct ticket number Replace #22356 with #22349 for these tests because #22356 has been fixed but now these tests fail because of #22349. - - - - - 15f150c8 by Sylvain Henry at 2023-06-15T18:09:16-04:00 JS: testsuite: update ticket numbers - - - - - 08d8e9ef by Sylvain Henry at 2023-06-15T18:09:16-04:00 JS: more triage - - - - - e8752e12 by Krzysztof Gogolewski at 2023-06-15T18:09:52-04:00 Fix test T18522-deb-ppr Fixes #23509 - - - - - 62c56416 by Ben Price at 2023-06-16T05:52:39-04:00 Lint: more details on "Occurrence is GlobalId, but binding is LocalId" This is helpful when debugging a pass which accidentally shadowed a binder. - - - - - d4c10238 by Ryan Hendrickson at 2023-06-16T05:53:22-04:00 Clean a stray bit of text in user guide - - - - - 93647b5c by Vladislav Zavialov at 2023-06-16T05:54:02-04:00 testsuite: Add forall visibility test cases The added tests ensure that the type checker does not confuse visible and invisible foralls. VisFlag1: kind-checking type applications and inferred type variable instantiations VisFlag1_ql: kind-checking Quick Look instantiations VisFlag2: kind-checking type family instances VisFlag3: checking kind annotations on type parameters of associated type families VisFlag4: checking kind annotations on type parameters in type declarations with SAKS VisFlag5: checking the result kind annotation of data family instances - - - - - a5f0c00e by Sylvain Henry at 2023-06-16T12:25:40-04:00 JS: factorize SaneDouble into its own module Follow-up of b159e0e9 whose ticket is #22736 - - - - - 0baf9e7c by Krzysztof Gogolewski at 2023-06-16T12:26:17-04:00 Add tests for #21973 - - - - - 640ea90e by Diego Diverio at 2023-06-16T23:07:55-04:00 Update documentation for `<**>` - - - - - 2469a813 by Diego Diverio at 2023-06-16T23:07:55-04:00 Update text - - - - - 1f515bbb by Diego Diverio at 2023-06-16T23:07:55-04:00 Update examples - - - - - 7af99a0d by Diego Diverio at 2023-06-16T23:07:55-04:00 Update documentation to actually display code correctly - - - - - 800aad7e by Andrei Borzenkov at 2023-06-16T23:08:32-04:00 Type/data instances: require that variables on the RHS are mentioned on the LHS (#23512) GHC Proposal #425 "Invisible binders in type declarations" restricts the scope of type and data family instances as follows: In type family and data family instances, require that every variable mentioned on the RHS must also occur on the LHS. For example, here are three equivalent type instance definitions accepted before this patch: type family F1 a :: k type instance F1 Int = Any :: j -> j type family F2 a :: k type instance F2 @(j -> j) Int = Any :: j -> j type family F3 a :: k type instance forall j. F3 Int = Any :: j -> j - In F1, j is implicitly quantified and it occurs only on the RHS; - In F2, j is implicitly quantified and it occurs both on the LHS and the RHS; - In F3, j is explicitly quantified. Now F1 is rejected with an out-of-scope error, while F2 and F3 continue to be accepted. - - - - - 9132d529 by Sylvain Henry at 2023-06-18T02:50:34-04:00 JS: testsuite: use correct ticket numbers - - - - - c3a1274c by Sylvain Henry at 2023-06-18T02:50:34-04:00 JS: don't dump eventlog to stderr by default Fix T16707 Bump stm submodule - - - - - 89bb8ad8 by Ryan Hendrickson at 2023-06-18T02:51:14-04:00 Fix TH name lookup for symbolic tycons (#23525) - - - - - cb9e1ce4 by Finley McIlwaine at 2023-06-18T21:16:45-06:00 IPE data compression IPE data resulting from the `-finfo-table-map` flag may now be compressed by configuring the GHC build with the `--enable-ipe-data-compression` flag. This results in about a 20% reduction in the size of IPE-enabled build results. The compression library, zstd, may optionally be statically linked by configuring with the `--enabled-static-libzstd` flag (on non-darwin platforms) libzstd version 1.4.0 or greater is required. - - - - - 0cbc3ae0 by Gergő Érdi at 2023-06-19T09:11:38-04:00 Add `IfaceWarnings` to represent the `ModIface`-storable parts of a `Warnings GhcRn`. Fixes #23516 - - - - - 3e80c2b4 by Arnaud Spiwack at 2023-06-20T03:19:41-04:00 Avoid desugaring non-recursive lets into recursive lets This prepares for having linear let expressions in the frontend. When desugaring lets, SPECIALISE statements create more copies of a let binding. Because of the rewrite rules attached to the bindings, there are dependencies between the generated binds. Before this commit, we simply wrapped all these in a mutually recursive let block, and left it to the simplified to sort it out. With this commit: we are careful to generate the bindings in dependency order, so that we can wrap them in consecutive lets (if the source is non-recursive). - - - - - 9fad49e0 by Ben Gamari at 2023-06-20T03:20:19-04:00 rts: Do not call exit() from SIGINT handler Previously `shutdown_handler` would call `stg_exit` if the scheduler was Oalready found to be in `SCHED_INTERRUPTING` state (or higher). However, `stg_exit` is not signal-safe as it calls `exit` (which calls `atexit` handlers). The only safe thing to do in this situation is to call `_exit`, which terminates with minimal cleanup. Fixes #23417. - - - - - 7485f848 by Andrew Lelechenko at 2023-06-20T03:20:57-04:00 Bump Cabal submodule This requires changing the recomp007 test because now cabal passes `this-unit-id` to executable components, and that unit-id contains a hash which includes the ABI of the dependencies. Therefore changing the dependencies means that -this-unit-id changes and recompilation is triggered. The spririt of the test is to test GHC's recompilation logic assuming that `-this-unit-id` is constant, so we explicitly pass `-ipid` to `./configure` rather than letting `Cabal` work it out. - - - - - 1464a2a8 by mangoiv at 2023-06-20T03:21:34-04:00 [feat] add a hint to `HasField` error message - add a hint that indicates that the record that the record dot is used on might just be missing a field - as the intention of the programmer is not entirely clear, it is only shown if the type is known - This addresses in part issue #22382 - - - - - b65e78dd by Ben Gamari at 2023-06-20T16:56:43-04:00 rts/ipe: Fix unused lock warning - - - - - 6086effd by Ben Gamari at 2023-06-20T16:56:44-04:00 rts/ProfilerReportJson: Fix memory leak - - - - - 1e48c434 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Various warnings fixes - - - - - 471486b9 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Fix printf format mismatch - - - - - 80603fb3 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Fix incorrect #include <sys/poll.h> According to Alpine's warnings and poll(2), <poll.h> should be preferred. - - - - - ff18e6fd by Ben Gamari at 2023-06-20T16:56:44-04:00 nonmoving: Fix unused definition warrnings - - - - - 6e7fe8ee by Ben Gamari at 2023-06-20T16:56:44-04:00 Disable futimens on Darwin. See #22938 - - - - - b7706508 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Fix incorrect CPP guard - - - - - 94f00e9b by Ben Gamari at 2023-06-20T16:56:44-04:00 hadrian: Ensure that -Werror is passed when compiling the RTS. Previously the `+werror` transformer would only pass `-Werror` to GHC, which does not ensure that the same is passed to the C compiler when building the RTS. Arguably this is itself a bug but for now we will just work around this by passing `-optc-Werror` to GHC. I tried to enable `-Werror` in all C compilations but the boot libraries are something of a portability nightmare. - - - - - 5fb54bf8 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Disable `#pragma GCC`s on clang compilers Otherwise the build fails due to warnings. See #23530. - - - - - cf87f380 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Fix capitalization of prototype - - - - - 17f250d7 by Ben Gamari at 2023-06-20T16:56:44-04:00 rts: Fix incorrect format specifier - - - - - 0ff1c501 by Josh Meredith at 2023-06-20T16:57:20-04:00 JS: remove js_broken(22576) in favour of the pre-existing wordsize(32) condition (#22576) - - - - - 3d1d42b7 by Finley McIlwaine at 2023-06-21T12:04:58-04:00 Memory usage fixes for Haddock - Do not include `mi_globals` in the `NoBackend` backend. It was only included for Haddock, but Haddock does not actually need it. This causes a 200MB reduction in max residency when generating haddocks on the Agda codebase (roughly 1GB to 800MB). - Make haddock_{parser,renamer}_perf tests more accurate by forcing docs to be written to interface files using `-fwrite-interface` Bumps haddock submodule. Metric Decrease: haddock.base - - - - - 8185b1c2 by Finley McIlwaine at 2023-06-21T12:04:58-04:00 Fix associated data family doc structure items Associated data families were being given their own export DocStructureItems, which resulted in them being documented separately from their classes in haddocks. This commit fixes it. - - - - - 4d356ea3 by Sylvain Henry at 2023-06-21T12:04:59-04:00 JS: implement TH support - Add ghc-interp.js bootstrap script for the JS interpreter - Interactively link and execute iserv code from the ghci package - Incrementally load and run JS code for splices into the running iserv Co-authored-by: Luite Stegeman <stegeman@gmail.com> - - - - - 3249cf12 by Sylvain Henry at 2023-06-21T12:04:59-04:00 Don't use getKey - - - - - f84ff161 by Sylvain Henry at 2023-06-21T12:04:59-04:00 Stg: return imported FVs This is used to determine what to link when using the interpreter. For now it's only used by the JS interpreter but it could easily be used by the native interpreter too (instead of extracting names from compiled BCOs). - - - - - fab2ad23 by Sylvain Henry at 2023-06-21T12:04:59-04:00 Fix some recompilation avoidance tests - - - - - a897dc13 by Sylvain Henry at 2023-06-21T12:04:59-04:00 TH_import_loop is now broken as expected - - - - - dbb4ad51 by Sylvain Henry at 2023-06-21T12:04:59-04:00 JS: always recompile when TH is enabled (cf #23013) - - - - - 711b1d24 by Bartłomiej Cieślar at 2023-06-21T12:59:27-04:00 Add support for deprecating exported items (proposal #134) This is an implementation of the deprecated exports proposal #134. The proposal introduces an ability to introduce warnings to exports. This allows for deprecating a name only when it is exported from a specific module, rather than always depreacting its usage. In this example: module A ({-# DEPRECATED "do not use" #-} x) where x = undefined --- module B where import A(x) `x` will emit a warning when it is explicitly imported. Like the declaration warnings, export warnings are first accumulated within the `Warnings` struct, then passed into the ModIface, from which they are then looked up and warned about in the importing module in the `lookup_ie` helpers of the `filterImports` function (for the explicitly imported names) and in the `addUsedGRE(s)` functions where they warn about regular usages of the imported name. In terms of the AST information, the custom warning is stored in the extension field of the variants of the `IE` type (see Trees that Grow for more information). The commit includes a bump to the haddock submodule added in MR #28 Signed-off-by: Bartłomiej Cieślar <bcieslar2001@gmail.com> - - - - - c1865854 by Ben Gamari at 2023-06-21T12:59:30-04:00 configure: Bump version to 9.8 Bumps Haddock submodule - - - - - 4e1de71c by Ben Gamari at 2023-06-21T21:07:48-04:00 configure: Bump version to 9.9 Bumps haddock submodule. - - - - - 5b6612bc by Ben Gamari at 2023-06-23T03:56:49-04:00 rts: Work around missing prototypes errors Darwin's toolchain inexpliciably claims that `write_barrier` and friends have declarations without prototypes, despite the fact that (a) they are definitions, and (b) the prototypes appear only a few lines above. Work around this by making the definitions proper prototypes. - - - - - 43b66a13 by Matthew Pickering at 2023-06-23T03:57:26-04:00 ghcup-metadata: Fix date modifier (M = minutes, m = month) Fixes #23552 - - - - - 564164ef by Luite Stegeman at 2023-06-24T10:27:29+09:00 Support large stack frames/offsets in GHCi bytecode interpreter Bytecode instructions like PUSH_L (push a local variable) contain an operand that refers to the stack slot. Before this patch, the operand type was SmallOp (Word16), limiting the maximum stack offset to 65535 words. This could cause compiler panics in some cases (See #22888). This patch changes the operand type for stack offsets from SmallOp to Op, removing the stack offset limit. Fixes #22888 - - - - - 8d6574bc by Sylvain Henry at 2023-06-26T13:15:06-04:00 JS: support levity-polymorphic datatypes (#22360,#22291) - thread knowledge about levity into PrimRep instead of panicking - JS: remove assumption that unlifted heap objects are rts objects (TVar#, etc.) Doing this also fixes #22291 (test added). There is a small performance hit (~1% more allocations). Metric Increase: T18698a T18698b - - - - - 5578bbad by Matthew Pickering at 2023-06-26T13:15:43-04:00 MR Review Template: Mention "Blocked on Review" label In order to improve our MR review processes we now have the label "Blocked on Review" which allows people to signal that a MR is waiting on a review to happen. See: https://mail.haskell.org/pipermail/ghc-devs/2023-June/021255.html - - - - - 4427e9cf by Matthew Pickering at 2023-06-26T13:15:43-04:00 Move MR template to Default.md This makes it more obvious what you have to modify to affect the default template rather than looking in the project settings. - - - - - 522bd584 by Arnaud Spiwack at 2023-06-26T13:16:33-04:00 Revert "Avoid desugaring non-recursive lets into recursive lets" This (temporary) reverts commit 3e80c2b40213bebe302b1bd239af48b33f1b30ef. Fixes #23550 - - - - - c59fbb0b by Torsten Schmits at 2023-06-26T19:34:20+02:00 Propagate breakpoint information when inlining across modules Tracking ticket: #23394 MR: !10448 * Add constructor `IfaceBreakpoint` to `IfaceTickish` * Store breakpoint data in interface files * Store `BreakArray` for the breakpoint's module, not the current module, in BCOs * Store module name in BCOs instead of `Unique`, since the `Unique` from an `Iface` doesn't match the modules in GHCi's state * Allocate module name in `ModBreaks`, like `BreakArray` * Lookup breakpoint by module name in GHCi * Skip creating breakpoint instructions when no `ModBreaks` are available, rather than injecting `ModBreaks` in the linker when breakpoints are enabled, and panicking when `ModBreaks` is missing - - - - - 6f904808 by Greg Steuck at 2023-06-27T16:53:07-04:00 Remove undefined FP_PROG_LD_BUILD_ID from configure.ac's - - - - - e89aa072 by Andrei Borzenkov at 2023-06-27T16:53:44-04:00 Remove arity inference in type declarations (#23514) Arity inference in type declarations was introduced as a workaround for the lack of @k-binders. They were added in 4aea0a72040, so I simplified all of this by simply removing arity inference altogether. This is part of GHC Proposal #425 "Invisible binders in type declarations". - - - - - 459dee1b by Torsten Schmits at 2023-06-27T16:54:20-04:00 Relax defaulting of RuntimeRep/Levity when printing Fixes #16468 MR: !10702 Only default RuntimeRep to LiftedRep when variables are bound by the toplevel forall - - - - - 151f8f18 by Torsten Schmits at 2023-06-27T16:54:57-04:00 Remove duplicate link label in linear types docs - - - - - ecdc4353 by Rodrigo Mesquita at 2023-06-28T12:24:57-04:00 Stop configuring unused Ld command in `settings` GHC has no direct dependence on the linker. Rather, we depend upon the C compiler for linking and an object-merging program (which is typically `ld`) for production of GHCi objects and merging of C stubs into final object files. Despite this, for historical reasons we still recorded information about the linker into `settings`. Remove these entries from `settings`, `hadrian/cfg/system.config`, as well as the `configure` logic responsible for this information. Closes #23566. - - - - - bf9ec3e4 by Bryan Richter at 2023-06-28T12:25:33-04:00 Remove extraneous debug output - - - - - 7eb68dd6 by Bryan Richter at 2023-06-28T12:25:33-04:00 Work with unset vars in -e mode - - - - - 49c27936 by Bryan Richter at 2023-06-28T12:25:33-04:00 Pass positional arguments in their positions By quoting $cmd, the default "bash -i" is a single argument to run, and no file named "bash -i" actually exists to be run. - - - - - 887dc4fc by Bryan Richter at 2023-06-28T12:25:33-04:00 Handle unset value in -e context - - - - - 5ffc7d7b by Rodrigo Mesquita at 2023-06-28T21:07:36-04:00 Configure CPP into settings There is a distinction to be made between the Haskell Preprocessor and the C preprocessor. The former is used to preprocess Haskell files, while the latter is used in C preprocessing such as Cmm files. In practice, they are both the same program (usually the C compiler) but invoked with different flags. Previously we would, at configure time, configure the haskell preprocessor and save the configuration in the settings file, but, instead of doing the same for CPP, we had hardcoded in GHC that the CPP program was either `cc -E` or `cpp`. This commit fixes that asymmetry by also configuring CPP at configure time, and tries to make more explicit the difference between HsCpp and Cpp (see Note [Preprocessing invocations]). Note that we don't use the standard CPP and CPPFLAGS to configure Cpp, but instead use the non-standard --with-cpp and --with-cpp-flags. The reason is that autoconf sets CPP to "$CC -E", whereas we expect the CPP command to be configured as a standalone executable rather than a command. These are symmetrical with --with-hs-cpp and --with-hs-cpp-flags. Cleanup: Hadrian no longer needs to pass the CPP configuration for CPP to be C99 compatible through -optP, since we now configure that into settings. Closes #23422 - - - - - 5efa9ca5 by Ben Gamari at 2023-06-28T21:08:13-04:00 hadrian: Always canonicalize topDirectory Hadrian's `topDirectory` is intended to provide an absolute path to the root of the GHC tree. However, if the tree is reached via a symlink this One question here is whether the `canonicalizePath` call is expensive enough to warrant caching. In a quick microbenchmark I observed that `canonicalizePath "."` takes around 10us per call; this seems sufficiently low not to worry. Alternatively, another approach here would have been to rather move the canonicalization into `m4/fp_find_root.m4`. This would have avoided repeated canonicalization but sadly path canonicalization is a hard problem in POSIX shell. Addresses #22451. - - - - - b3e1436f by aadaa_fgtaa at 2023-06-28T21:08:53-04:00 Optimise ELF linker (#23464) - cache last elements of `relTable`, `relaTable` and `symbolTables` in `ocInit_ELF` - cache shndx table in ObjectCode - run `checkProddableBlock` only with debug rts - - - - - 30525b00 by Ben Gamari at 2023-06-28T21:09:30-04:00 compiler: Introduce MO_{ACQUIRE,RELEASE}_FENCE - - - - - b787e259 by Ben Gamari at 2023-06-28T21:09:30-04:00 compiler: Drop MO_WriteBarrier rts: Drop write_barrier - - - - - 7550b4a5 by Ben Gamari at 2023-06-28T21:09:30-04:00 rts: Drop load_store_barrier() This is no longer used. - - - - - d5f2875e by Ben Gamari at 2023-06-28T21:09:31-04:00 rts: Drop last instances of prim_{write,read}_barrier - - - - - 965ac2ba by Ben Gamari at 2023-06-28T21:09:31-04:00 rts: Eliminate remaining uses of load_load_barrier - - - - - 0fc5cb97 by Sven Tennie at 2023-06-28T21:09:31-04:00 compiler: Drop MO_ReadBarrier - - - - - 7a7d326c by Ben Gamari at 2023-06-28T21:09:31-04:00 rts: Drop load_load_barrier This is no longer used. - - - - - 9f63da66 by Sven Tennie at 2023-06-28T21:09:31-04:00 Delete write_barrier function - - - - - bb0ed354 by Ben Gamari at 2023-06-28T21:09:31-04:00 rts: Make collectFreshWeakPtrs definition a prototype x86-64/Darwin's toolchain inexplicably warns that collectFreshWeakPtrs needs to be a prototype. - - - - - ef81a1eb by Sven Tennie at 2023-06-28T21:10:08-04:00 Fix number of free double regs D1..D4 are defined for aarch64 and thus not free. - - - - - c335fb7c by Ryan Scott at 2023-06-28T21:10:44-04:00 Fix typechecking of promoted empty lists The `'[]` case in `tc_infer_hs_type` is smart enough to handle arity-0 uses of `'[]` (see the newly added `T23543` test case for an example), but the `'[]` case in `tc_hs_type` was not. We fix this by changing the `tc_hs_type` case to invoke `tc_infer_hs_type`, as prescribed in `Note [Future-proofing the type checker]`. There are some benign changes to test cases' expected output due to the new code path using `forall a. [a]` as the kind of `'[]` rather than `[k]`. Fixes #23543. - - - - - fcf310e7 by Rodrigo Mesquita at 2023-06-28T21:11:21-04:00 Configure MergeObjs supports response files rather than Ld The previous configuration script to test whether Ld supported response files was * Incorrect (see #23542) * Used, in practice, to check if the *merge objects tool* supported response files. This commit modifies the macro to run the merge objects tool (rather than Ld), using a response file, and checking the result with $NM Fixes #23542 - - - - - 78b2f3cc by Sylvain Henry at 2023-06-28T21:12:02-04:00 JS: fix JS stack printing (#23565) - - - - - 9f01d14b by Matthew Pickering at 2023-06-29T04:13:41-04:00 Add -fpolymorphic-specialisation flag (off by default at all optimisation levels) Polymorphic specialisation has led to a number of hard to diagnose incorrect runtime result bugs (see #23469, #23109, #21229, #23445) so this commit introduces a flag `-fpolymorhphic-specialisation` which allows users to turn on this experimental optimisation if they are willing to buy into things going very wrong. Ticket #23469 - - - - - b1e611d5 by Ben Gamari at 2023-06-29T04:14:17-04:00 Rip out runtime linker/compiler checks We used to choose flags to pass to the toolchain at runtime based on the platform running GHC, and in this commit we drop all of those runtime linker checks Ultimately, this represents a change in policy: We no longer adapt at runtime to the toolchain being used, but rather make final decisions about the toolchain used at /configure time/ (we have deleted Note [Run-time linker info] altogether!). This works towards the goal of having all toolchain configuration logic living in the same place, which facilities the work towards a runtime-retargetable GHC (see #19877). As of this commit, the runtime linker/compiler logic was moved to autoconf, but soon it, and the rest of the existing toolchain configuration logic, will live in the standalone ghc-toolchain program (see !9263) In particular, what used to be done at runtime is now as follows: * The flags -Wl,--no-as-needed for needed shared libs are configured into settings * The flag -fstack-check is configured into settings * The check for broken tables-next-to-code was outdated * We use the configured c compiler by default as the assembler program * We drop `asmOpts` because we already configure -Qunused-arguments flag into settings (see !10589) Fixes #23562 Co-author: Rodrigo Mesquita (@alt-romes) - - - - - 8b35e8ca by Ben Gamari at 2023-06-29T18:46:12-04:00 Define FFI_GO_CLOSURES The libffi shipped with Apple's XCode toolchain does not contain a definition of the FFI_GO_CLOSURES macro, despite containing references to said macro. Work around this by defining the macro, following the model of a similar workaround in OpenJDK [1]. [1] https://github.com/openjdk/jdk17u-dev/pull/741/files - - - - - d7ef1704 by Ben Gamari at 2023-06-29T18:46:12-04:00 base: Fix incorrect CPP guard This was guarded on `darwin_HOST_OS` instead of `defined(darwin_HOST_OS)`. - - - - - 7c7d1f66 by Ben Gamari at 2023-06-29T18:46:48-04:00 rts/Trace: Ensure that debugTrace arguments are used As debugTrace is a macro we must take care to ensure that the fact is clear to the compiler lest we see warnings. - - - - - cb92051e by Ben Gamari at 2023-06-29T18:46:48-04:00 rts: Various warnings fixes - - - - - dec81dd1 by Ben Gamari at 2023-06-29T18:46:48-04:00 hadrian: Ignore warnings in unix and semaphore-compat - - - - - d7f6448a by Matthew Pickering at 2023-06-30T12:38:43-04:00 hadrian: Fix dependencies of docs:* rule For the docs:* rule we need to actually build the package rather than just the haddocks for the dependent packages. Therefore we depend on the .conf files of the packages we are trying to build documentation for as well as the .haddock files. Fixes #23472 - - - - - cec90389 by sheaf at 2023-06-30T12:39:27-04:00 Add tests for #22106 Fixes #22106 - - - - - 083794b1 by Torsten Schmits at 2023-07-03T03:27:27-04:00 Add -fbreak-points to control breakpoint insertion Rather than statically enabling breakpoints only for the interpreter, this adds a new flag. Tracking ticket: #23057 MR: !10466 - - - - - fd8c5769 by Ben Gamari at 2023-07-03T03:28:04-04:00 rts: Ensure that pinned allocations respect block size Previously, it was possible for pinned, aligned allocation requests to allocate beyond the end of the pinned accumulator block. Specifically, we failed to account for the padding needed to achieve the requested alignment in the "large object" check. With large alignment requests, this can result in the allocator using the capability's pinned object accumulator block to service a request which is larger than `PINNED_EMPTY_SIZE`. To fix this we reorganize `allocatePinned` to consistently account for the alignment padding in all large object checks. This is a bit subtle as we must handle the case of a small allocation request filling the accumulator block, as well as large requests. Fixes #23400. - - - - - 98185d52 by Ben Gamari at 2023-07-03T03:28:05-04:00 testsuite: Add test for #23400 - - - - - 4aac0540 by Ben Gamari at 2023-07-03T03:28:42-04:00 ghc-heap: Support for BLOCKING_QUEUE closures - - - - - 03f941f4 by Ben Bellick at 2023-07-03T03:29:29-04:00 Add some structured diagnostics in Tc/Validity.hs This addresses the work of ticket #20118 Created the following constructors for TcRnMessage - TcRnInaccessibleCoAxBranch - TcRnPatersonCondFailure - - - - - 6074cc3c by Moisés Ackerman at 2023-07-03T03:30:13-04:00 Add failing test case for #23492 - - - - - 356a2692 by Moisés Ackerman at 2023-07-03T03:30:13-04:00 Use generated src span for catch-all case of record selector functions This fixes #23492. The problem was that we used the real source span of the field declaration for the generated catch-all case in the selector function, in particular in the generated call to `recSelError`, which meant it was included in the HIE output. Using `generatedSrcSpan` instead means that it is not included. - - - - - 3efe7f39 by Moisés Ackerman at 2023-07-03T03:30:13-04:00 Introduce genLHsApp and genLHsLit helpers in GHC.Rename.Utils - - - - - dd782343 by Moisés Ackerman at 2023-07-03T03:30:13-04:00 Construct catch-all default case using helpers GHC.Rename.Utils concrete helpers instead of wrapGenSpan + HS AST constructors - - - - - 0e09c38e by Ryan Hendrickson at 2023-07-03T03:30:56-04:00 Add regression test for #23549 - - - - - 32741743 by Alexis King at 2023-07-03T03:31:36-04:00 perf tests: Increase default stack size for MultiLayerModules An unhelpfully small stack size appears to have been the real culprit behind the metric fluctuations in #19293. Debugging metric decreases triggered by !10729 helped to finally identify the problem. Metric Decrease: MultiLayerModules MultiLayerModulesTH_Make T13701 T14697 - - - - - 82ac6bf1 by Bryan Richter at 2023-07-03T03:32:15-04:00 Add missing void prototypes to rts functions See #23561. - - - - - 6078b429 by Ben Gamari at 2023-07-03T03:32:51-04:00 gitlab-ci: Refactor compilation of gen_ci Flakify and document it, making it far less sensitive to the build environment. - - - - - aa2db0ae by Ben Gamari at 2023-07-03T03:33:29-04:00 testsuite: Update documentation - - - - - 924a2362 by Gregory Gerasev at 2023-07-03T03:34:10-04:00 Better error for data deriving of type synonym/family. Closes #23522 - - - - - 4457da2a by Dave Barton at 2023-07-03T03:34:51-04:00 Fix some broken links and typos - - - - - de5830d0 by Ben Gamari at 2023-07-04T22:03:59-04:00 configure: Rip out Solaris dyld check Solaris 11 was released over a decade ago and, moreover, I doubt we have any Solaris users - - - - - 59c5fe1d by doyougnu at 2023-07-04T22:04:56-04:00 CI: add JS release and debug builds, regen CI jobs - - - - - 679bbc97 by Vladislav Zavialov at 2023-07-04T22:05:32-04:00 testsuite: Do not require CUSKs Numerous tests make use of CUSKs (complete user-supplied kinds), a legacy feature scheduled for deprecation. In order to proceed with the said deprecation, the tests have been updated to use SAKS instead (standalone kind signatures). This also allows us to remove the Haskell2010 language pragmas that were added in 115cd3c85a8 to work around the lack of CUSKs in GHC2021. - - - - - 945d3599 by Ben Gamari at 2023-07-04T22:06:08-04:00 gitlab: Drop backport-for-8.8 MR template Its usefulness has long passed. - - - - - 66c721d3 by Alan Zimmerman at 2023-07-04T22:06:44-04:00 EPA: Simplify GHC/Parser.y comb2 Use the HasLoc instance from Ast.hs to allow comb2 to work with anything with a SrcSpan This gets rid of the custom comb2A, comb2Al, comb2N functions, and removes various reLoc calls. - - - - - 2be99b7e by Matthew Pickering at 2023-07-04T22:07:21-04:00 Fix deprecation warning when deprecated identifier is from another module A stray 'Just' was being printed in the deprecation message. Fixes #23573 - - - - - 46c9bcd6 by Ben Gamari at 2023-07-04T22:07:58-04:00 rts: Don't rely on initializers for sigaction_t As noted in #23577, CentOS's ancient toolchain throws spurious missing-field-initializer warnings. - - - - - ec55035f by Ben Gamari at 2023-07-04T22:07:58-04:00 hadrian: Don't treat -Winline warnings as fatal Such warnings are highly dependent upon the toolchain, platform, and build configuration. It's simply too fragile to rely on these. - - - - - 3a09b789 by Ben Gamari at 2023-07-04T22:07:58-04:00 hadrian: Only pass -Wno-nonportable-include-path on Darwin This flag, which was introduced due to #17798, is only understood by Clang and consequently throws warnings on platforms using gcc. Sadly, there is no good way to treat such warnings as non-fatal with `-Werror` so for now we simply make this flag specific to platforms known to use Clang and case-insensitive filesystems (Darwin and Windows). See #23577. - - - - - 4af7eac2 by Mario Blažević at 2023-07-04T22:08:38-04:00 Fixed ticket #23571, TH.Ppr.pprLit hanging on large numeric literals - - - - - 2304c697 by Ben Gamari at 2023-07-04T22:09:15-04:00 compiler: Make OccSet opaque - - - - - cf735db8 by Andrei Borzenkov at 2023-07-04T22:09:51-04:00 Add Note about why we need forall in Code to be on the right - - - - - fb140f82 by Hécate Moonlight at 2023-07-04T22:10:34-04:00 Relax the constraint about the foreign function's calling convention of FinalizerPtr to capi as well as ccall. - - - - - 9ce44336 by meooow25 at 2023-07-05T11:42:37-04:00 Improve the situation with the stimes cycle Currently the Semigroup stimes cycle is resolved in GHC.Base by importing stimes implementations from a hs-boot file. Resolve the cycle using hs-boot files for required classes (Num, Integral) instead. Now stimes can be defined directly in GHC.Base, making inlining and specialization possible. This leads to some new boot files for `GHC.Num` and `GHC.Real`, the methods for those are only used to implement `stimes` so it doesn't appear that these boot files will introduce any new performance traps. Metric Decrease: T13386 T8095 Metric Increase: T13253 T13386 T18698a T18698b T19695 T8095 - - - - - 9edcb1fb by Jaro Reinders at 2023-07-05T11:43:24-04:00 Refactor Unique to be represented by Word64 In #22010 we established that Int was not always sufficient to store all the uniques we generate during compilation on 32-bit platforms. This commit addresses that problem by using Word64 instead of Int for uniques. The core of the change is in GHC.Core.Types.Unique and GHC.Core.Types.Unique.Supply. However, the representation of uniques is used in many other places, so those needed changes too. Additionally, the RTS has been extended with an atomic_inc64 operation. One major change from this commit is the introduction of the Word64Set and Word64Map data types. These are adapted versions of IntSet and IntMap from the containers package. These are planned to be upstreamed in the future. As a natural consequence of these changes, the compiler will be a bit slower and take more space on 32-bit platforms. Our CI tests indicate around a 5% residency increase. Metric Increase: CoOpt_Read CoOpt_Singletons LargeRecord ManyAlternatives ManyConstructors MultiComponentModules MultiComponentModulesRecomp MultiLayerModulesTH_OneShot RecordUpdPerf T10421 T10547 T12150 T12227 T12234 T12425 T12707 T13035 T13056 T13253 T13253-spj T13379 T13386 T13719 T14683 T14697 T14766 T15164 T15703 T16577 T16875 T17516 T18140 T18223 T18282 T18304 T18698a T18698b T18923 T1969 T19695 T20049 T21839c T3064 T3294 T4801 T5030 T5321FD T5321Fun T5631 T5642 T5837 T6048 T783 T8095 T9020 T9198 T9233 T9630 T9675 T9872a T9872b T9872b_defer T9872c T9872d T9961 TcPlugin_RewritePerf UniqLoop WWRec hard_hole_fits - - - - - 6b9db7d4 by Brandon Chinn at 2023-07-05T11:44:03-04:00 Fix docs for __GLASGOW_HASKELL_FULL_VERSION__ macro - - - - - 40f4ef7c by Torsten Schmits at 2023-07-05T18:06:19-04:00 Substitute free variables captured by breakpoints in SpecConstr Fixes #23267 - - - - - 2b55cb5f by sheaf at 2023-07-05T18:07:07-04:00 Reinstate untouchable variable error messages This extra bit of information was accidentally being discarded after a refactoring of the way we reported problems when unifying a type variable with another type. This patch rectifies that. - - - - - 53ed21c5 by Rodrigo Mesquita at 2023-07-05T18:07:47-04:00 configure: Drop Clang command from settings Due to 01542cb7227614a93508b97ecad5b16dddeb6486 we no longer use the `runClang` function, and no longer need to configure into settings the Clang command. We used to determine options at runtime to pass clang when it was used as an assembler, but now that we configure at configure time we no longer need to. - - - - - 6fdcf969 by Torsten Schmits at 2023-07-06T12:12:09-04:00 Filter out nontrivial substituted expressions in substTickish Fixes #23272 - - - - - 41968fd6 by Sylvain Henry at 2023-07-06T12:13:02-04:00 JS: testsuite: use req_c predicate instead of js_broken - - - - - 74a4dd2e by Sylvain Henry at 2023-07-06T12:13:02-04:00 JS: implement some file primitives (lstat,rmdir) (#22374) - Implement lstat and rmdir. - Implement base_c_s_is* functions (testing a file type) - Enable passing tests - - - - - 7e759914 by Sylvain Henry at 2023-07-07T02:39:38-04:00 JS: cleanup utils (#23314) - Removed unused code - Don't export unused functions - Move toTypeList to Closure module - - - - - f617655c by Sylvain Henry at 2023-07-07T02:39:38-04:00 JS: rename VarType/Vt into JSRep - - - - - 19216ca5 by Sylvain Henry at 2023-07-07T02:39:38-04:00 JS: remove custom PrimRep conversion (#23314) We use the usual conversion to PrimRep and then we convert these PrimReps to JSReps. - - - - - d3de8668 by Sylvain Henry at 2023-07-07T02:39:38-04:00 JS: don't use isRuntimeRepKindedTy in JS FFI - - - - - 8d1b75cb by Matthew Pickering at 2023-07-07T02:40:15-04:00 ghcup-metadata: Also updates ghcup-nightlies-0.0.7.yaml file Fixes #23600 - - - - - e524fa7f by Matthew Pickering at 2023-07-07T02:40:15-04:00 ghcup-metadata: Use dynamically linked alpine bindists In theory these will work much better on alpine to allow people to build statically linked applications there. We don't need to distribute a statically linked application ourselves in order to allow that. Fixes #23602 - - - - - b9e7beb9 by Ben Gamari at 2023-07-07T11:32:22-04:00 Drop circle-ci-job.sh - - - - - 9955eead by Ben Gamari at 2023-07-07T11:32:22-04:00 testsuite: Allow preservation of unexpected output Here we introduce a new flag to the testsuite driver, --unexpected-output-dir=<dir>, which allows the user to ask the driver to preserve unexpected output from tests. The intent is for this to be used in CI to allow users to more easily fix unexpected platform-dependent output. - - - - - 48f80968 by Ben Gamari at 2023-07-07T11:32:22-04:00 gitlab-ci: Preserve unexpected output Here we enable use of the testsuite driver's `--unexpected-output-dir` flag by CI, preserving the result as an artifact for use by users. - - - - - 76983a0d by Matthew Pickering at 2023-07-07T11:32:58-04:00 driver: Fix -S with .cmm files There was an oversight in the driver which assumed that you would always produce a `.o` file when compiling a .cmm file. Fixes #23610 - - - - - 6df15e93 by Mike Pilgrem at 2023-07-07T11:33:40-04:00 Update Hadrian's stack.yaml - - - - - 1dff43cf by Ben Gamari at 2023-07-08T05:05:37-04:00 compiler: Rework ShowSome Previously the field used to filter the sub-declarations to show was rather ad-hoc and was only able to show at most one sub-declaration. - - - - - 8165404b by Ben Gamari at 2023-07-08T05:05:37-04:00 testsuite: Add test to catch changes in core libraries This adds testing infrastructure to ensure that changes in core libraries (e.g. `base` and `ghc-prim`) are caught in CI. - - - - - ec1c32e2 by Melanie Phoenix at 2023-07-08T05:06:14-04:00 Deprecate Data.List.NonEmpty.unzip - - - - - 5d2442b8 by Ben Gamari at 2023-07-08T05:06:51-04:00 Drop latent mentions of -split-objs Closes #21134. - - - - - a9bc20cb by Oleg Grenrus at 2023-07-08T05:07:31-04:00 Add warn_and_run test kind This is a compile_and_run variant which also captures the GHC's stderr. The warn_and_run name is best I can come up with, as compile_and_run is taken. This is useful specifically for testing warnings. We want to test that when warning triggers, and it's not a false positive, i.e. that the runtime behaviour is indeed "incorrect". As an example a single test is altered to use warn_and_run - - - - - c7026962 by Ben Gamari at 2023-07-08T05:08:11-04:00 configure: Don't use ld.gold on i386 ld.gold appears to produce invalid static constructor tables on i386. While ideally we would add an autoconf check to check for this brokenness, sadly such a check isn't easy to compose. Instead to summarily reject such linkers on i386. Somewhat hackily closes #23579. - - - - - 054261dd by Andrew Lelechenko at 2023-07-08T19:32:47-04:00 Add since annotations for Data.Foldable1 - - - - - 550af505 by Sylvain Henry at 2023-07-08T19:33:28-04:00 JS: support -this-unit-id for programs in the linker (#23613) - - - - - d284470a by Andrew Lelechenko at 2023-07-08T19:34:08-04:00 Bump text submodule - - - - - 8e11630e by jade at 2023-07-10T16:58:40-04:00 Add a hint to enable ExplicitNamespaces for type operator imports (Fixes/Enhances #20007) As suggested in #20007 and implemented in !8895, trying to import type operators will suggest a fix to use the 'type' keyword, without considering whether ExplicitNamespaces is enabled. This patch will query whether ExplicitNamespaces is enabled and add a hint to suggest enabling ExplicitNamespaces if it isn't enabled, alongside the suggestion of adding the 'type' keyword. - - - - - 61b1932e by sheaf at 2023-07-10T16:59:26-04:00 tyThingLocalGREs: include all DataCons for RecFlds The GREInfo for a record field should include the collection of all the data constructors of the parent TyCon that have this record field. This information was being incorrectly computed in the tyThingLocalGREs function for a DataCon, as we were not taking into account other DataCons with the same parent TyCon. Fixes #23546 - - - - - e6627cbd by Alan Zimmerman at 2023-07-10T17:00:05-04:00 EPA: Simplify GHC/Parser.y comb3 A follow up to !10743 - - - - - ee20da34 by Andrew Lelechenko at 2023-07-10T17:01:01-04:00 Document that compareByteArrays# is available since ghc-prim-0.5.2.0 - - - - - 4926af7b by Matthew Pickering at 2023-07-10T17:01:38-04:00 Revert "Bump text submodule" This reverts commit d284470a77042e6bc17bdb0ab0d740011196958a. This commit requires that we bootstrap with ghc-9.4, which we do not require until #23195 has been completed. Subsequently this has broken nighty jobs such as the rocky8 job which in turn has broken nightly releases. - - - - - d1c92bf3 by Ben Gamari at 2023-07-11T08:07:02-04:00 compiler: Fingerprint more code generation flags Previously our recompilation check was quite inconsistent in its coverage of non-optimisation code generation flags. Specifically, we failed to account for most flags that would affect the behavior of generated code in ways that might affect the result of a program's execution (e.g. `-feager-blackholing`, `-fstrict-dicts`) Closes #23369. - - - - - eb623149 by Ben Gamari at 2023-07-11T08:07:02-04:00 compiler: Record original thunk info tables on stack Here we introduce a new code generation option, `-forig-thunk-info`, which ensures that an `stg_orig_thunk_info` frame is pushed before every update frame. This can be invaluable when debugging thunk cycles and similar. See Note [Original thunk info table frames] for details. Closes #23255. - - - - - 4731f44e by Jaro Reinders at 2023-07-11T08:07:40-04:00 Fix wrong MIN_VERSION_GLASGOW_HASKELL macros I forgot to change these after rebasing. - - - - - dd38aca9 by Andreas Schwab at 2023-07-11T13:55:56+00:00 Hadrian: enable GHCi support on riscv64 - - - - - 09a5c6cc by Josh Meredith at 2023-07-12T11:25:13-04:00 JavaScript: support unicode code points > 2^16 in toJSString using String.fromCodePoint (#23628) - - - - - 29fbbd4e by Matthew Pickering at 2023-07-12T11:25:49-04:00 Remove references to make build system in mk/build.mk Fixes #23636 - - - - - 630e3026 by sheaf at 2023-07-12T11:26:43-04:00 Valid hole fits: don't panic on a Given The function GHC.Tc.Errors.validHoleFits would end up panicking when encountering a Given constraint. To fix this, it suffices to filter out the Givens before continuing. Fixes #22684 - - - - - c39f279b by Matthew Pickering at 2023-07-12T23:18:38-04:00 Use deb10 for i386 bindists deb9 is now EOL so it's time to upgrade the i386 bindist to use deb10 Fixes #23585 - - - - - bf9b9de0 by Krzysztof Gogolewski at 2023-07-12T23:19:15-04:00 Fix #23567, a specializer bug Found by Simon in https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507834 The testcase isn't ideal because it doesn't detect the bug in master, unless doNotUnbox is removed as in https://gitlab.haskell.org/ghc/ghc/-/issues/23567#note_507692. But I have confirmed that with that modification, it fails before and passes afterwards. - - - - - 84c1a4a2 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00 Comments - - - - - b2846cb5 by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00 updates to comments - - - - - 2af23f0e by Bartłomiej Cieślar at 2023-07-12T23:20:08-04:00 changes - - - - - 6143838a by sheaf at 2023-07-13T08:02:17-04:00 Fix deprecation of record fields Commit 3f374399 inadvertently broke the deprecation/warning mechanism for record fields due to its introduction of record field namespaces. This patch ensures that, when a top-level deprecation is applied to an identifier, it applies to all the record fields as well. This is achieved by refactoring GHC.Rename.Env.lookupLocalTcNames, and GHC.Rename.Env.lookupBindGroupOcc, to not look up a fixed number of NameSpaces but to look up all NameSpaces and filter out the irrelevant ones. - - - - - 6fd8f566 by sheaf at 2023-07-13T08:02:17-04:00 Introduce greInfo, greParent These are simple helper functions that wrap the internal field names gre_info, gre_par. - - - - - 7f0a86ed by sheaf at 2023-07-13T08:02:17-04:00 Refactor lookupGRE_... functions This commit consolidates all the logic for looking up something in the Global Reader Environment into the single function lookupGRE. This allows us to declaratively specify all the different modes of looking up in the GlobalRdrEnv, and avoids manually passing around filtering functions as was the case in e.g. the function GHC.Rename.Env.lookupSubBndrOcc_helper. ------------------------- Metric Decrease: T8095 ------------------------- ------------------------- Metric Increase: T8095 ------------------------- - - - - - 5e951395 by Rodrigo Mesquita at 2023-07-13T08:02:54-04:00 configure: Drop DllWrap command We used to configure into settings a DllWrap command for windows builds and distributions, however, we no longer do, and dllwrap is effectively unused. This simplification is motivated in part by the larger toolchain-selection project (#19877, !9263) - - - - - e10556b6 by Teo Camarasu at 2023-07-14T16:28:46-04:00 base: fix haddock syntax in GHC.Profiling - - - - - 0f3fda81 by Matthew Pickering at 2023-07-14T16:29:23-04:00 Revert "CI: add JS release and debug builds, regen CI jobs" This reverts commit 59c5fe1d4b624423b1c37891710f2757bb58d6af. This commit added two duplicate jobs on all validate pipelines, so we are reverting for now whilst we work out what the best way forward is. Ticket #23618 - - - - - 54bca324 by Alan Zimmerman at 2023-07-15T03:23:26-04:00 EPA: Simplify GHC/Parser.y sLL Follow up to !10743 - - - - - c8863828 by sheaf at 2023-07-15T03:24:06-04:00 Configure: canonicalise PythonCmd on Windows This change makes PythonCmd resolve to a canonical absolute path on Windows, which prevents HLS getting confused (now that we have a build-time dependency on python). fixes #23652 - - - - - ca1e636a by Rodrigo Mesquita at 2023-07-15T03:24:42-04:00 Improve Note [Binder-swap during float-out] - - - - - cf86f3ec by Matthew Craven at 2023-07-16T01:42:09+02:00 Equality of forall-types is visibility aware This patch finally (I hope) nails the question of whether (forall a. ty) and (forall a -> ty) are `eqType`: they aren't! There is a long discussion in #22762, plus useful Notes: * Note [ForAllTy and type equality] in GHC.Core.TyCo.Compare * Note [Comparing visiblities] in GHC.Core.TyCo.Compare * Note [ForAllCo] in GHC.Core.TyCo.Rep It also establishes a helpful new invariant for ForAllCo, and ForAllTy, when the bound variable is a CoVar:in that case the visibility must be coreTyLamForAllTyFlag. All this is well documented in revised Notes. - - - - - 7f13acbf by Vladislav Zavialov at 2023-07-16T01:56:27-04:00 List and Tuple<n>: update documentation Add the missing changelog.md entries and @since-annotations. - - - - - 2afbddb0 by Andrei Borzenkov at 2023-07-16T10:21:24+04:00 Type patterns (#22478, #18986) Improved name resolution and type checking of type patterns in constructors: 1. HsTyPat: a new dedicated data type that represents type patterns in HsConPatDetails instead of reusing HsPatSigType 2. rnHsTyPat: a new function that renames a type pattern and collects its binders into three groups: - explicitly bound type variables, excluding locally bound variables - implicitly bound type variables from kind signatures (only if ScopedTypeVariables are enabled) - named wildcards (only from kind signatures) 2a. rnHsPatSigTypeBindingVars: removed in favour of rnHsTyPat 2b. rnImplcitTvBndrs: removed because no longer needed 3. collect_pat: updated to collect type variable binders from type patterns (this means that types and terms use the same infrastructure to detect conflicting bindings, unused variables and name shadowing) 3a. CollVarTyVarBinders: a new CollectFlag constructor that enables collection of type variables 4. tcHsTyPat: a new function that typechecks type patterns, capable of handling polymorphic kinds. See Note [Type patterns: binders and unifiers] Examples of code that is now accepted: f = \(P @a) -> \(P @a) -> ... -- triggers -Wname-shadowing g :: forall a. Proxy a -> ... g (P @a) = ... -- also triggers -Wname-shadowing h (P @($(TH.varT (TH.mkName "t")))) = ... -- t is bound at splice time j (P @(a :: (x,x))) = ... -- (x,x) is no longer rejected data T where MkT :: forall (f :: forall k. k -> Type). f Int -> f Maybe -> T k :: T -> () k (MkT @f (x :: f Int) (y :: f Maybe)) = () -- f :: forall k. k -> Type Examples of code that is rejected with better error messages: f (Left @a @a _) = ... -- new message: -- • Conflicting definitions for ‘a’ -- Bound at: Test.hs:1:11 -- Test.hs:1:14 Examples of code that is now rejected: {-# OPTIONS_GHC -Werror=unused-matches #-} f (P @a) = () -- Defined but not used: type variable ‘a’ - - - - - eb1a6ab1 by sheaf at 2023-07-16T09:20:45-04:00 Don't use substTyUnchecked in newMetaTyVar There were some comments that explained that we needed to use an unchecked substitution function because of issue #12931, but that has since been fixed, so we should be able to use substTy instead now. - - - - - c7bbad9a by sheaf at 2023-07-17T02:48:19-04:00 rnImports: var shouldn't import NoFldSelectors In an import declaration such as import M ( var ) the import of the variable "var" should **not** bring into scope record fields named "var" which are defined with NoFieldSelectors. Doing so can cause spurious "unused import" warnings, as reported in ticket #23557. Fixes #23557 - - - - - 1af2e773 by sheaf at 2023-07-17T02:48:19-04:00 Suggest similar names in imports This commit adds similar name suggestions when importing. For example module A where { spelling = 'o' } module B where { import B ( speling ) } will give rise to the error message: Module ‘A’ does not export ‘speling’. Suggested fix: Perhaps use ‘spelling’ This also provides hints when users try to import record fields defined with NoFieldSelectors. - - - - - 654fdb98 by Alan Zimmerman at 2023-07-17T02:48:55-04:00 EPA: Store leading AnnSemi for decllist in al_rest This simplifies the markAnnListA implementation in ExactPrint - - - - - 22565506 by sheaf at 2023-07-17T21:12:59-04:00 base: add COMPLETE pragma to BufferCodec PatSyn This implements CLC proposal #178, rectifying an oversight in the implementation of CLC proposal #134 which could lead to spurious pattern match warnings. https://github.com/haskell/core-libraries-committee/issues/178 https://github.com/haskell/core-libraries-committee/issues/134 - - - - - 860f6269 by sheaf at 2023-07-17T21:13:00-04:00 exactprint: silence incomplete record update warnings - - - - - df706de3 by sheaf at 2023-07-17T21:13:00-04:00 Re-instate -Wincomplete-record-updates Commit e74fc066 refactored the handling of record updates to use the HsExpanded mechanism. This meant that the pattern matching inherent to a record update was considered to be "generated code", and thus we stopped emitting "incomplete record update" warnings entirely. This commit changes the "data Origin = Source | Generated" datatype, adding a field to the Generated constructor to indicate whether we still want to perform pattern-match checking. We also have to do a bit of plumbing with HsCase, to record that the HsCase arose from an HsExpansion of a RecUpd, so that the error message continues to mention record updates as opposed to a generic "incomplete pattern matches in case" error. Finally, this patch also changes the way we handle inaccessible code warnings. Commit e74fc066 was also a regression in this regard, as we were emitting "inaccessible code" warnings for case statements spuriously generated when desugaring a record update (remember: the desugaring mechanism happens before typechecking; it thus can't take into account e.g. GADT information in order to decide which constructors to include in the RHS of the desugaring of the record update). We fix this by changing the mechanism through which we disable inaccessible code warnings: we now check whether we are in generated code in GHC.Tc.Utils.TcMType.newImplication in order to determine whether to emit inaccessible code warnings. Fixes #23520 Updates haddock submodule, to avoid incomplete record update warnings - - - - - 1d05971e by sheaf at 2023-07-17T21:13:00-04:00 Propagate long-distance information in do-notation The preceding commit re-enabled pattern-match checking inside record updates. This revealed that #21360 was in fact NOT fixed by e74fc066. This commit makes sure we correctly propagate long-distance information in do blocks, e.g. in ```haskell data T = A { fld :: Int } | B f :: T -> Maybe T f r = do a@A{} <- Just r Just $ case a of { A _ -> A 9 } ``` we need to propagate the fact that "a" is headed by the constructor "A" to see that the case expression "case a of { A _ -> A 9 }" cannot fail. Fixes #21360 - - - - - bea0e323 by sheaf at 2023-07-17T21:13:00-04:00 Skip PMC for boring patterns Some patterns introduce no new information to the pattern-match checker (such as plain variable or wildcard patterns). We can thus skip doing any pattern-match checking on them when the sole purpose for doing so was introducing new long-distance information. See Note [Boring patterns] in GHC.Hs.Pat. Doing this avoids regressing in performance now that we do additional pattern-match checking inside do notation. - - - - - ddcdd88c by Rodrigo Mesquita at 2023-07-17T21:13:36-04:00 Split GHC.Platform.ArchOS from ghc-boot into ghc-platform Split off the `GHC.Platform.ArchOS` module from the `ghc-boot` package into this reinstallable standalone package which abides by the PVP, in part motivated by the ongoing work on `ghc-toolchain` towards runtime retargetability. - - - - - b55a8ea7 by Sylvain Henry at 2023-07-17T21:14:27-04:00 JS: better implementation for plusWord64 (#23597) - - - - - 889c2bbb by sheaf at 2023-07-18T06:37:32-04:00 Do primop rep-poly checks when instantiating This patch changes how we perform representation-polymorphism checking for primops (and other wired-in Ids such as coerce). When instantiating the primop, we check whether each type variable is required to instantiated to a concrete type, and if so we create a new concrete metavariable (a ConcreteTv) instead of a simple MetaTv. (A little subtlety is the need to apply the substitution obtained from instantiating to the ConcreteTvOrigins, see Note [substConcreteTvOrigin] in GHC.Tc.Utils.TcMType.) This allows us to prevent representation-polymorphism in non-argument position, as that is required for some of these primops. We can also remove the logic in tcRemainingValArgs, except for the part concerning representation-polymorphic unlifted newtypes. The function has been renamed rejectRepPolyNewtypes; all it does now is reject unsaturated occurrences of representation-polymorphic newtype constructors when the representation of its argument isn't a concrete RuntimeRep (i.e. still a PHASE 1 FixedRuntimeRep check). The Note [Eta-expanding rep-poly unlifted newtypes] in GHC.Tc.Gen.Head gives more explanation about a possible path to PHASE 2, which would be in line with the treatment for primops taken in this patch. We also update the Core Lint check to handle this new framework. This means Core Lint now checks representation-polymorphism in continuation position like needed for catch#. Fixes #21906 ------------------------- Metric Increase: LargeRecord ------------------------- - - - - - 00648e5d by Krzysztof Gogolewski at 2023-07-18T06:38:10-04:00 Core Lint: distinguish let and letrec in locations Lint messages were saying "in the body of letrec" even for non-recursive let. I've also renamed BodyOfLetRec to BodyOfLet in stg, since there's no separate letrec. - - - - - 787bae96 by Krzysztof Gogolewski at 2023-07-18T06:38:50-04:00 Use extended literals when deriving Show This implements GHC proposal https://github.com/ghc-proposals/ghc-proposals/pull/596 Also add support for Int64# and Word64#; see testcase ShowPrim. - - - - - 257f1567 by Jaro Reinders at 2023-07-18T06:39:29-04:00 Add StgFromCore and StgCodeGen linting - - - - - 34d08a20 by Ben Gamari at 2023-07-19T03:33:22-04:00 Reg.Liveness: Strictness - - - - - c5deaa27 by Ben Gamari at 2023-07-19T03:33:22-04:00 Reg.Liveness: Don't repeatedly construct UniqSets - - - - - b947250b by Ben Gamari at 2023-07-19T03:33:22-04:00 compiler/Types: Ensure that fromList-type operations can fuse In #20740 I noticed that mkUniqSet does not fuse. In practice, allowing it to do so makes a considerable difference in allocations due to the backend. Metric Decrease: T12707 T13379 T3294 T4801 T5321FD T5321Fun T783 - - - - - 6c88c2ba by Sven Tennie at 2023-07-19T03:33:59-04:00 x86 Codegen: Implement MO_S_MulMayOflo for W16 - - - - - 5f1154e0 by Sven Tennie at 2023-07-19T03:33:59-04:00 x86 CodeGen: MO_S_MulMayOflo better error message for rep > W64 It's useful to see which value made the pattern match fail. (If it ever occurs.) - - - - - e8c9a95f by Sven Tennie at 2023-07-19T03:33:59-04:00 x86 CodeGen: Implement MO_S_MulMayOflo for W8 This case wasn't handled before. But, the test-primops test suite showed that it actually might appear. - - - - - a36f9dc9 by Sven Tennie at 2023-07-19T03:33:59-04:00 Add test for %mulmayoflo primop The test expects a perfect implementation with no false positives. - - - - - 38a36248 by Matthew Pickering at 2023-07-19T03:34:36-04:00 lint-ci-config: Generate jobs-metadata.json We also now save the jobs-metadata.json and jobs.yaml file as artifacts as: * It might be useful for someone who is modifying CI to copy jobs.yaml if they are having trouble regenerating locally. * jobs-metadata.json is very useful for downstream pipelines to work out the right job to download. Fixes #23654 - - - - - 1535a671 by Vladislav Zavialov at 2023-07-19T03:35:12-04:00 Initialize 9.10.1-notes.rst Create new release notes for the next GHC release (GHC 9.10) - - - - - 3bd4d5b5 by sheaf at 2023-07-19T03:35:53-04:00 Prioritise Parent when looking up class sub-binder When we look up children GlobalRdrElts of a given Parent, we sometimes would rather prioritise those GlobalRdrElts which have the right Parent, and sometimes prioritise those that have the right NameSpace: - in export lists, we should prioritise NameSpace - for class/instance binders, we should prioritise Parent See Note [childGREPriority] in GHC.Types.Name.Reader. fixes #23664 - - - - - 9c8fdda3 by Alan Zimmerman at 2023-07-19T03:36:29-04:00 EPA: Improve annotation management in getMonoBind Ensure the LHsDecl for a FunBind has the correct leading comments and trailing annotations. See the added note for details. - - - - - ff884b77 by Matthew Pickering at 2023-07-19T11:42:02+01:00 Remove unused files in .gitlab These were left over after 6078b429 - - - - - 29ef590c by Matthew Pickering at 2023-07-19T11:42:52+01:00 gen_ci: Add hie.yaml file This allows you to load `gen_ci.hs` into HLS, and now it is a huge module, that is quite useful. - - - - - 808b55cf by Matthew Pickering at 2023-07-19T12:24:41+01:00 ci: Make "fast-ci" the default validate configuration We are trying out a lighter weight validation pipeline where by default we just test on 5 platforms: * x86_64-deb10-slow-validate * windows * x86_64-fedora33-release * aarch64-darwin * aarch64-linux-deb10 In order to enable the "full" validation pipeline you can apply the `full-ci` label which will enable all the validation pipelines. All the validation jobs are still run on a marge batch. The goal is to reduce the overall CI capacity so that pipelines start faster for MRs and marge bot batches are faster. Fixes #23694 - - - - - 0b23db03 by Alan Zimmerman at 2023-07-20T05:28:47-04:00 EPA: Simplify GHC/Parser.y sL1 This is the next patch in a series simplifying location management in GHC/Parser.y This one simplifies sL1, to use the HasLoc instances introduced in !10743 (closed) - - - - - 3ece9856 by Ben Gamari at 2023-07-21T07:30:45-04:00 nativeGen: Explicitly set flags of text sections on Windows The binutils documentation (for COFF) claims,

If no flags are specified, the default flags depend upon the section name. If the section name is not recognized, the default will be for the section to be loaded and writable.

We previously assumed that this would do the right thing for split sections (e.g. a section named `.text$foo` would be correctly inferred to be a text section). However, we have observed that this is not the case (at least under the clang toolchain used on Windows): when split-sections is enabled, text sections are treated by the assembler as data (matching the "default" behavior specified by the documentation). Avoid this by setting section flags explicitly. This should fix split sections on Windows. Fixes #22834. - - - - - db7f7240 by Ben Gamari at 2023-07-21T07:30:45-04:00 nativeGen: Set explicit section types on all platforms - - - - - b444c16f by Finley McIlwaine at 2023-07-21T07:31:28-04:00 Insert documentation into parsed signature modules Causes haddock comments in signature modules to be properly inserted into the AST (just as they are for regular modules) if the `-haddock` flag is given. Also adds a test that compares `-ddump-parsed-ast` output for a signature module to prevent further regressions. Fixes #23315 - - - - - c30cea53 by Ben Gamari at 2023-07-21T23:23:49-04:00 primops: Introduce unsafeThawByteArray# This addresses an odd asymmetry in the ByteArray# primops, which previously provided unsafeFreezeByteArray# but no corresponding thaw operation. Closes #22710 - - - - - 87f9bd47 by Ben Gamari at 2023-07-21T23:23:49-04:00 testsuite: Elaborate in interface stability README This discussion didn't make it into the original MR. - - - - - e4350b41 by Matthew Pickering at 2023-07-21T23:24:25-04:00 Allow users to override non-essential haddock options in a Flavour We now supply the non-essential options to haddock using the `extraArgs` field, which can be specified in a Flavour so that if an advanced user wants to change how documentation is generated then they can use something other than the `defaultHaddockExtraArgs`. This does have the potential to regress some packaging if a user has overridden `extraArgs` themselves, because now they also need to add the haddock options to extraArgs. This can easily be done by appending `defaultHaddockExtraArgs` to their extraArgs invocation but someone might not notice this behaviour has changed. In any case, I think passing the non-essential options in this manner is the right thing to do and matches what we do for the "ghc" builder, which by default doesn't pass any optmisation levels, and would likewise be very bad if someone didn't pass suitable `-O` levels for builds. Fixes #23625 - - - - - fc186b0c by Ilias Tsitsimpis at 2023-07-21T23:25:03-04:00 ghc-prim: Link against libatomic Commit b4d39adbb58 made 'hs_cmpxchg64()' available to all architectures. Unfortunately this made GHC to fail to build on armel, since armel needs libatomic to support atomic operations on 64-bit word sizes. Configure libraries/ghc-prim/ghc-prim.cabal to link against libatomic, the same way as we do in rts/rts.cabal. - - - - - 4f5538a8 by Matthew Pickering at 2023-07-21T23:25:39-04:00 simplifier: Correct InScopeSet in rule matching The in-scope set passedto the `exprIsLambda_maybe` call lacked all the in-scope binders. @simonpj suggests this fix where we augment the in-scope set with the free variables of expression which fixes this failure mode in quite a direct way. Fixes #23630 - - - - - 5ad8d597 by Krzysztof Gogolewski at 2023-07-21T23:26:17-04:00 Add a test for #23413 It was fixed by commit e1590ddc661d6: Add the SolverStage monad. - - - - - 7e05f6df by sheaf at 2023-07-21T23:26:56-04:00 Finish migration of diagnostics in GHC.Tc.Validity This patch finishes migrating the error messages in GHC.Tc.Validity to use the new diagnostic infrastructure. It also refactors the error message datatypes for class and family instances, to common them up under a single datatype as much as possible. - - - - - 4876fddc by Matthew Pickering at 2023-07-21T23:27:33-04:00 ci: Enable some more jobs to run in a marge batch In !10907 I made the majority of jobs not run on a validate pipeline but then forgot to renable a select few jobs on the marge batch MR. - - - - - 026991d7 by Jens Petersen at 2023-07-21T23:28:13-04:00 user_guide/flags.py: python-3.12 no longer includes distutils packaging.version seems able to handle this fine - - - - - b91bbc2b by Matthew Pickering at 2023-07-21T23:28:50-04:00 ci: Mention ~full-ci label in MR template We mention that if you need a full validation pipeline then you can apply the ~full-ci label to your MR in order to test against the full validation pipeline (like we do for marge). - - - - - 42b05e9b by sheaf at 2023-07-22T12:36:00-04:00 RTS: declare setKeepCAFs symbol Commit 08ba8720 failed to declare the dependency of keepCAFsForGHCi on the symbol setKeepCAFs in the RTS, which led to undefined symbol errors on Windows, as exhibited by the testcase frontend001. Thanks to Moritz Angermann and Ryan Scott for the diagnosis and fix. Fixes #22961 - - - - - a72015d6 by sheaf at 2023-07-22T12:36:01-04:00 Mark plugins-external as broken on Windows This test is broken on Windows, so we explicitly mark it as such now that we stop skipping plugin tests on Windows. - - - - - cb9c93d7 by sheaf at 2023-07-22T12:36:01-04:00 Stop marking plugin tests as fragile on Windows Now that b2bb3e62 has landed we are in a better situation with regards to plugins on Windows, allowing us to unmark many plugin tests as fragile. Fixes #16405 - - - - - a7349217 by Krzysztof Gogolewski at 2023-07-22T12:36:37-04:00 Misc cleanup - Remove unused RDR names - Fix typos in comments - Deriving: simplify boxConTbl and remove unused litConTbl - chmod -x GHC/Exts.hs, this seems accidental - - - - - 33b6850a by Vladislav Zavialov at 2023-07-23T10:27:37-04:00 Visible forall in types of terms: Part 1 (#22326) This patch implements part 1 of GHC Proposal #281, introducing explicit `type` patterns and `type` arguments. Summary of the changes: 1. New extension flag: RequiredTypeArguments 2. New user-facing syntax: `type p` patterns (represented by EmbTyPat) `type e` expressions (represented by HsEmbTy) 3. Functions with required type arguments (visible forall) can now be defined and applied: idv :: forall a -> a -> a -- signature (relevant change: checkVdqOK in GHC/Tc/Validity.hs) idv (type a) (x :: a) = x -- definition (relevant change: tcPats in GHC/Tc/Gen/Pat.hs) x = idv (type Int) 42 -- usage (relevant change: tcInstFun in GHC/Tc/Gen/App.hs) 4. template-haskell support: TH.TypeE corresponds to HsEmbTy TH.TypeP corresponds to EmbTyPat 5. Test cases and a new User's Guide section Changes *not* included here are the t2t (term-to-type) transformation and term variable capture; those belong to part 2. - - - - - 73b5c7ce by sheaf at 2023-07-23T10:28:18-04:00 Add test for #22424 This is a simple Template Haskell test in which we refer to record selectors by their exact Names, in two different ways. Fixes #22424 - - - - - 83cbc672 by Ben Gamari at 2023-07-24T07:40:49+00:00 ghc-toolchain: Initial commit - - - - - 31dcd26c by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00 ghc-toolchain: Toolchain Selection This commit integrates ghc-toolchain, the brand new way of configuring toolchains for GHC, with the Hadrian build system, with configure, and extends and improves the first iteration of ghc-toolchain. The general overview is * We introduce a program invoked `ghc-toolchain --triple=...` which, when run, produces a file with a `Target`. A `GHC.Toolchain.Target.Target` describes the properties of a target and the toolchain (executables and configured flags) to produce code for that target * Hadrian was modified to read Target files, and will both * Invoke the toolchain configured in the Target file as needed * Produce a `settings` file for GHC based on the Target file for that stage * `./configure` will invoke ghc-toolchain to generate target files, but it will also generate target files based on the flags configure itself configured (through `.in` files that are substituted) * By default, the Targets generated by configure are still (for now) the ones used by Hadrian * But we additionally validate the Target files generated by ghc-toolchain against the ones generated by configure, to get a head start on catching configuration bugs before we transition completely. * When we make that transition, we will want to drop a lot of the toolchain configuration logic from configure, but keep it otherwise. * For each compiler stage we should have 1 target file (up to a stage compiler we can't run in our machine) * We just have a HOST target file, which we use as the target for stage0 * And a TARGET target file, which we use for stage1 (and later stages, if not cross compiling) * Note there is no BUILD target file, because we only support cross compilation where BUILD=HOST * (for more details on cross-compilation see discussion on !9263) See also * Note [How we configure the bundled windows toolchain] * Note [ghc-toolchain consistency checking] * Note [ghc-toolchain overview] Ticket: #19877 MR: !9263 - - - - - a732b6d3 by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00 Add flag to enable/disable ghc-toolchain based configurations This flag is disabled by default, and we'll use the configure-generated-toolchains by default until we remove the toolchain configuration logic from configure. - - - - - 61eea240 by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00 Split ghc-toolchain executable to new packge In light of #23690, we split the ghc-toolchain executable out of the library package to be able to ship it in the bindist using Hadrian. Ideally, we eventually revert this commit. - - - - - 38e795ff by Rodrigo Mesquita at 2023-07-24T07:40:49+00:00 Ship ghc-toolchain in the bindist Add the ghc-toolchain binary to the binary distribution we ship to users, and teach the bindist configure to use the existing ghc-toolchain. - - - - - 32cae784 by Matthew Craven at 2023-07-24T16:48:24-04:00 Kill off gen_bytearray_addr_access_ops.py The relevant primop descriptions are now generated directly by genprimopcode. This makes progress toward fixing #23490, but it is not a complete fix since there is more than one way in which cabal-reinstall (hadrian/build build-cabal) is broken. - - - - - 02e6a6ce by Matthew Pickering at 2023-07-24T16:49:00-04:00 compiler: Remove unused `containers.h` include Fixes #23712 - - - - - 822ef66b by Matthew Pickering at 2023-07-25T08:44:50-04:00 Fix pretty printing of WARNING pragmas There is still something quite unsavoury going on with WARNING pragma printing because the printing relies on the fact that for decl deprecations the SourceText of WarningTxt is empty. However, I let that lion sleep and just fixed things directly. Fixes #23465 - - - - - e7b38ede by Matthew Pickering at 2023-07-25T08:45:28-04:00 ci-images: Bump to commit which has 9.6 image The test-bootstrap job has been failing for 9.6 because we accidentally used a non-master commit. - - - - - bb408936 by Matthew Pickering at 2023-07-25T08:45:28-04:00 Update bootstrap plans for 9.6.2 and 9.4.5 - - - - - 355e1792 by Alan Zimmerman at 2023-07-26T10:17:32-04:00 EPA: Simplify GHC/Parser.y comb4/comb5 Use the HasLoc instance from Ast.hs to allow comb4/comb5 to work with anything with a SrcSpan Also get rid of some more now unnecessary reLoc calls. - - - - - 9393df83 by Gavin Zhao at 2023-07-26T10:18:16-04:00 compiler: make -ddump-asm work with wasm backend NCG Fixes #23503. Now the `-ddump-asm` flag is respected in the wasm backend NCG, so developers can directly view the generated ASM instead of needing to pass `-S` or `-keep-tmp-files` and manually find & open the assembly file. Ideally, we should be able to output the assembly files in smaller chunks like in other NCG backends. This would also make dumping assembly stats easier. However, this would require a large refactoring, so for short-term debugging purposes I think the current approach works fine. Signed-off-by: Gavin Zhao <git@gzgz.dev> - - - - - 79463036 by Krzysztof Gogolewski at 2023-07-26T10:18:54-04:00 llvm: Restore accidentally deleted code in 0fc5cb97 Fixes #23711 - - - - - 20db7e26 by Rodrigo Mesquita at 2023-07-26T10:19:33-04:00 configure: Default missing options to False when preparing ghc-toolchain Targets This commit fixes building ghc with 9.2 as the boostrap compiler. The ghc-toolchain patch assumed all _STAGE0 options were available, and forgot to account for this missing information in 9.2. Ghc 9.2 does not have in settings whether ar supports -l, hence can't report it with --info (unliked 9.4 upwards). The fix is to default the missing information (we default "ar supports -l" and other missing options to False) - - - - - fac9e84e by Naïm Favier at 2023-07-26T10:20:16-04:00 docs: Fix typo - - - - - 503fd647 by Bartłomiej Cieślar at 2023-07-26T17:23:10-04:00 This MR is an implementation of the proposal #516. It adds a warning -Wincomplete-record-selectors for usages of a record field access function (either a record selector or getField @"rec"), while trying to silence the warning whenever it can be sure that a constructor without the record field would not be invoked (which would otherwise cause the program to fail). For example: data T = T1 | T2 {x :: Bool} f a = x a -- this would throw an error g T1 = True g a = x a -- this would not throw an error h :: HasField "x" r Bool => r -> Bool h = getField @"x" j :: T -> Bool j = h -- this would throw an error because of the `HasField` -- constraint being solved See the tests DsIncompleteRecSel* and TcIncompleteRecSel for more examples of the warning. See Note [Detecting incomplete record selectors] in GHC.HsToCore.Expr for implementation details - - - - - af6fdf42 by Arnaud Spiwack at 2023-07-26T17:23:52-04:00 Fix user-facing label in MR template - - - - - 5d45b92a by Matthew Pickering at 2023-07-27T05:46:46-04:00 ci: Test bootstrapping configurations with full-ci and on marge batches There have been two incidents recently where bootstrapping has been broken by removing support for building with 9.2.*. The process for bumping the minimum required version starts with bumping the configure version and then other CI jobs such as the bootstrap jobs have to be updated. We must not silently bump the minimum required version. Now we are running a slimmed down validate pipeline it seems worthwile to test these bootstrap configurations in the full-ci pipeline. - - - - - 25d4fee7 by Matthew Pickering at 2023-07-27T05:46:46-04:00 bootstrap: Remove ghc-9_2_* plans We are anticipating shortly making it necessary to use ghc-9.4 to boot the compiler. - - - - - 2f66da16 by Matthew Pickering at 2023-07-27T05:46:46-04:00 Update bootstrap plans for ghc-platform and ghc-toolchain dependencies Fixes #23735 - - - - - c8c6eab1 by Matthew Pickering at 2023-07-27T05:46:46-04:00 bootstrap: Disable -selftest flag from bootstrap plans This saves on building one dependency (QuickCheck) which is unecessary for bootstrapping. - - - - - a80ca086 by Andrew Lelechenko at 2023-07-27T05:47:26-04:00 Link reference paper and package from System.Mem.{StableName,Weak} - - - - - a5319358 by David Knothe at 2023-07-28T13:13:10-04:00 Update Match Datatype EquationInfo currently contains a list of the equation's patterns together with a CoreExpr that is to be evaluated after a successful match on this equation. All the match-functions only operate on the first pattern of an equation - after successfully matching it, match is called recursively on the tail of the pattern list. We can express this more clearly and make the code a little more elegant by updating the datatype of EquationInfo as follows: data EquationInfo = EqnMatch { eqn_pat = Pat GhcTc, eqn_rest = EquationInfo } | EqnDone { eqn_rhs = MatchResult CoreExpr } An EquationInfo now explicitly exposes its first pattern which most functions operate on, and exposes the equation that remains after processing the first pattern. An EqnDone signifies an empty equation where the CoreExpr can now be evaluated. - - - - - 86ad1af9 by David Binder at 2023-07-28T13:13:53-04:00 Improve documentation for Data.Fixed - - - - - f8fa1d08 by Ben Gamari at 2023-07-28T13:14:31-04:00 ghc-prim: Use C11 atomics Previously `ghc-prim`'s atomic wrappers used the legacy `__sync_*` family of C builtins. Here we refactor these to rather use the appropriate C11 atomic equivalents, allowing us to be more explicit about the expected ordering semantics. - - - - - 0bfc8908 by Finley McIlwaine at 2023-07-28T18:46:26-04:00 Include -haddock in DynFlags fingerprint The -haddock flag determines whether or not the resulting .hi files contain haddock documentation strings. If the existing .hi files do not contain haddock documentation strings and the user requests them, we should recompile. - - - - - 40425c50 by Andreas Klebinger at 2023-07-28T18:47:02-04:00 Aarch64 NCG: Use encoded immediates for literals. Try to generate instr x2, <imm> instead of mov x1, lit instr x2, x1 When possible. This get's rid if quite a few redundant mov instructions. I believe this causes a metric decrease for LargeRecords as we reduce register pressure. ------------------------- Metric Decrease: LargeRecord ------------------------- - - - - - e9a0fa3f by Andrew Lelechenko at 2023-07-28T18:47:42-04:00 Bump filepath submodule to 1.4.100.4 Resolves #23741 Metric Decrease: MultiComponentModules MultiComponentModulesRecomp MultiLayerModules MultiLayerModulesRecomp T10421 T12234 T12425 T13035 T13701 T13719 T16875 T18304 T18698a T18698b T21839c T9198 TcPlugin_RewritePerf hard_hole_fits Metric decrease on Windows can be probably attributed to https://github.com/haskell/filepath/pull/183 - - - - - ee93edfd by Andrew Lelechenko at 2023-07-28T18:48:21-04:00 Add since pragmas to GHC.IO.Handle.FD - - - - - d0369802 by Simon Peyton Jones at 2023-07-30T09:24:48+01:00 Make the occurrence analyser smarter about join points This MR addresses #22404. There is a big Note Note [Occurrence analysis for join points] that explains it all. Significant changes * New field occ_join_points in OccEnv * The NonRec case of occAnalBind splits into two cases: one for existing join points (which does the special magic for Note [Occurrence analysis for join points], and one for other bindings. * mkOneOcc adds in info from occ_join_points. * All "bring into scope" activity is centralised in the new function `addInScope`. * I made a local data type LocalOcc for use inside the occurrence analyser It is like OccInfo, but lacks IAmDead and IAmALoopBreaker, which in turn makes computationns over it simpler and more efficient. * I found quite a bit of allocation in GHC.Core.Rules.getRules so I optimised it a bit. More minor changes * I found I was using (Maybe Arity) a lot, so I defined a new data type JoinPointHood and used it everwhere. This touches a lot of non-occ-anal files, but it makes everything more perspicuous. * Renamed data constructor WithUsageDetails to WUD, and WithTailUsageDetails to WTUD This also fixes #21128, on the way. --------- Compiler perf ----------- I spent quite a time on performance tuning, so even though it does more than before, the occurrence analyser runs slightly faster on average. Here are the compile-time allocation changes over 0.5% CoOpt_Read(normal) ghc/alloc 766,025,520 754,561,992 -1.5% CoOpt_Singletons(normal) ghc/alloc 759,436,840 762,925,512 +0.5% LargeRecord(normal) ghc/alloc 1,814,482,440 1,799,530,456 -0.8% PmSeriesT(normal) ghc/alloc 68,159,272 67,519,720 -0.9% T10858(normal) ghc/alloc 120,805,224 118,746,968 -1.7% T11374(normal) ghc/alloc 164,901,104 164,070,624 -0.5% T11545(normal) ghc/alloc 79,851,808 78,964,704 -1.1% T12150(optasm) ghc/alloc 73,903,664 71,237,544 -3.6% GOOD T12227(normal) ghc/alloc 333,663,200 331,625,864 -0.6% T12234(optasm) ghc/alloc 52,583,224 52,340,344 -0.5% T12425(optasm) ghc/alloc 81,943,216 81,566,720 -0.5% T13056(optasm) ghc/alloc 294,517,928 289,642,512 -1.7% T13253-spj(normal) ghc/alloc 118,271,264 59,859,040 -49.4% GOOD T15164(normal) ghc/alloc 1,102,630,352 1,091,841,296 -1.0% T15304(normal) ghc/alloc 1,196,084,000 1,166,733,000 -2.5% T15630(normal) ghc/alloc 148,729,632 147,261,064 -1.0% T15703(normal) ghc/alloc 379,366,664 377,600,008 -0.5% T16875(normal) ghc/alloc 32,907,120 32,670,976 -0.7% T17516(normal) ghc/alloc 1,658,001,888 1,627,863,848 -1.8% T17836(normal) ghc/alloc 395,329,400 393,080,248 -0.6% T18140(normal) ghc/alloc 71,968,824 73,243,040 +1.8% T18223(normal) ghc/alloc 456,852,568 453,059,088 -0.8% T18282(normal) ghc/alloc 129,105,576 131,397,064 +1.8% T18304(normal) ghc/alloc 71,311,712 70,722,720 -0.8% T18698a(normal) ghc/alloc 208,795,112 210,102,904 +0.6% T18698b(normal) ghc/alloc 230,320,736 232,697,976 +1.0% BAD T19695(normal) ghc/alloc 1,483,648,128 1,504,702,976 +1.4% T20049(normal) ghc/alloc 85,612,024 85,114,376 -0.6% T21839c(normal) ghc/alloc 415,080,992 410,906,216 -1.0% GOOD T4801(normal) ghc/alloc 247,590,920 250,726,272 +1.3% T6048(optasm) ghc/alloc 95,699,416 95,080,680 -0.6% T783(normal) ghc/alloc 335,323,384 332,988,120 -0.7% T9233(normal) ghc/alloc 709,641,224 685,947,008 -3.3% GOOD T9630(normal) ghc/alloc 965,635,712 948,356,120 -1.8% T9675(optasm) ghc/alloc 444,604,152 428,987,216 -3.5% GOOD T9961(normal) ghc/alloc 303,064,592 308,798,800 +1.9% BAD WWRec(normal) ghc/alloc 503,728,832 498,102,272 -1.1% geo. mean -1.0% minimum -49.4% maximum +1.9% In fact these figures seem to vary between platforms; generally worse on i386 for some reason. The Windows numbers vary by 1% espec in benchmarks where the total allocation is low. But the geom mean stays solidly negative, which is good. The "increase/decrease" list below covers all platforms. The big win on T13253-spj comes because it has a big nest of join points, each occurring twice in the next one. The new occ-anal takes only one iteration of the simplifier to do the inlining; the old one took four. Moreover, we get much smaller code with the new one: New: Result size of Tidy Core = {terms: 429, types: 84, coercions: 0, joins: 14/14} Old: Result size of Tidy Core = {terms: 2,437, types: 304, coercions: 0, joins: 10/10} --------- Runtime perf ----------- No significant changes in nofib results, except a 1% reduction in compiler allocation. Metric Decrease: CoOpt_Read T13253-spj T9233 T9630 T9675 T12150 T21839c LargeRecord MultiComponentModulesRecomp T10421 T13701 T10421 T13701 T12425 Metric Increase: T18140 T9961 T18282 T18698a T18698b T19695 - - - - - 42aa7fbd by Julian Ospald at 2023-07-30T17:22:01-04:00 Improve documentation around IOException and ioe_filename See: * https://github.com/haskell/core-libraries-committee/issues/189 * https://github.com/haskell/unix/pull/279 * https://github.com/haskell/unix/pull/289 - - - - - 33598ecb by Sylvain Henry at 2023-08-01T14:45:54-04:00 JS: implement getMonotonicTime (fix #23687) - - - - - d2bedffd by Bartłomiej Cieślar at 2023-08-01T14:46:40-04:00 Implementation of the Deprecated Instances proposal #575 This commit implements the ability to deprecate certain instances, which causes the compiler to emit the desired deprecation message whenever they are instantiated. For example: module A where class C t where instance {-# DEPRECATED "dont use" #-} C Int where module B where import A f :: C t => t f = undefined g :: Int g = f -- "dont use" emitted here The implementation is as follows: - In the parser, we parse deprecations/warnings attached to instances: instance {-# DEPRECATED "msg" #-} Show X deriving instance {-# WARNING "msg2" #-} Eq Y (Note that non-standalone deriving instance declarations do not support this mechanism.) - We store the resulting warning message in `ClsInstDecl` (respectively, `DerivDecl`). In `GHC.Tc.TyCl.Instance.tcClsInstDecl` (respectively, `GHC.Tc.Deriv.Utils.newDerivClsInst`), we pass on that information to `ClsInst` (and eventually store it in `IfaceClsInst` too). - Finally, when we solve a constraint using such an instance, in `GHC.Tc.Instance.Class.matchInstEnv`, we emit the appropriate warning that was stored in `ClsInst`. Note that we only emit a warning when the instance is used in a different module than it is defined, which keeps the behaviour in line with the deprecation of top-level identifiers. Signed-off-by: Bartłomiej Cieślar <bcieslar2001@gmail.com> - - - - - d5a65af6 by Ben Gamari at 2023-08-01T14:47:18-04:00 compiler: Style fixes - - - - - 7218c80a by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Fix implicit cast This ensures that Task.h can be built with a C++ compiler. - - - - - d6d5aafc by Ben Gamari at 2023-08-01T14:47:19-04:00 testsuite: Fix warning in hs_try_putmvar001 - - - - - d9eddf7a by Ben Gamari at 2023-08-01T14:47:19-04:00 testsuite: Add AtomicModifyIORef test - - - - - f9eea4ba by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Introduce NO_WARN macro This allows fine-grained ignoring of warnings. - - - - - 497b24ec by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Simplify atomicModifyMutVar2# implementation Previously we would perform a redundant load in the non-threaded RTS in atomicModifyMutVar2# implementation for the benefit of the non-moving GC's write barrier. Eliminate this. - - - - - 52ee082b by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Introduce more principled fence operations - - - - - cd3c0377 by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Introduce SET_INFO_RELAXED - - - - - 6df2352a by Ben Gamari at 2023-08-01T14:47:19-04:00 rts: Style fixes - - - - - 4ef6f319 by Ben Gamari at 2023-08-01T14:47:19-04:00 codeGen/tsan: Rework handling of spilling - - - - - f9ca7e27 by Ben Gamari at 2023-08-01T14:47:19-04:00 hadrian: More debug information - - - - - df4153ac by Ben Gamari at 2023-08-01T14:47:19-04:00 Improve TSAN documentation - - - - - fecae988 by Ben Gamari at 2023-08-01T14:47:19-04:00 hadrian: More selective TSAN instrumentation - - - - - 465a9a0b by Alan Zimmerman at 2023-08-01T14:47:56-04:00 EPA: Provide correct annotation span for ImportDecl Use the whole declaration, rather than just the span of the 'import' keyword. Metric Decrease: T9961 T5205 Metric Increase: T13035 - - - - - ae63d0fa by Bartłomiej Cieślar at 2023-08-01T14:48:40-04:00 Add cases to T23279: HasField for deprecated record fields This commit adds additional tests from ticket #23279 to ensure that we don't regress on reporting deprecated record fields in conjunction with HasField, either when using overloaded record dot syntax or directly through `getField`. Fixes #23279 - - - - - 00fb6e6b by Andreas Klebinger at 2023-08-01T14:49:17-04:00 AArch NCG: Pure refactor Combine some alternatives. Add some line breaks for overly long lines - - - - - 8f3b3b78 by Andreas Klebinger at 2023-08-01T14:49:54-04:00 Aarch ncg: Optimize immediate use for address calculations When the offset doesn't fit into the immediate we now just reuse the general getRegister' code path which is well optimized to compute the offset into a register instead of a special case for CmmRegOff. This means we generate a lot less code under certain conditions which is why performance metrics for these improve. ------------------------- Metric Decrease: T4801 T5321FD T5321Fun ------------------------- - - - - - 74a882dc by MorrowM at 2023-08-02T06:00:03-04:00 Add a RULE to make lookup fuse See https://github.com/haskell/core-libraries-committee/issues/175 Metric Increase: T18282 - - - - - cca74dab by Ben Gamari at 2023-08-02T06:00:39-04:00 hadrian: Ensure that way-flags are passed to CC Previously the way-specific compilation flags (e.g. `-DDEBUG`, `-DTHREADED_RTS`) would not be passed to the CC invocations. This meant that C dependency files would not correctly reflect dependencies predicated on the way, resulting in the rather painful #23554. Closes #23554. - - - - - 622b483c by Jaro Reinders at 2023-08-02T06:01:20-04:00 Native 32-bit Enum Int64/Word64 instances This commits adds more performant Enum Int64 and Enum Word64 instances for 32-bit platforms, replacing the Integer-based implementation. These instances are a copy of the Enum Int and Enum Word instances with minimal changes to manipulate Int64 and Word64 instead. On i386 this yields a 1.5x performance increase and for the JavaScript back end it even yields a 5.6x speedup. Metric Decrease: T18964 - - - - - c8bd7fa4 by Sylvain Henry at 2023-08-02T06:02:03-04:00 JS: fix typos in constants (#23650) - - - - - b9d5bfe9 by Josh Meredith at 2023-08-02T06:02:40-04:00 JavaScript: update MK_TUP macros to use current tuple constructors (#23659) - - - - - 28211215 by Matthew Pickering at 2023-08-02T06:03:19-04:00 ci: Pass -Werror when building hadrian in hadrian-ghc-in-ghci job Warnings when building Hadrian can end up cluttering the output of HLS, and we've had bug reports in the past about these warnings when building Hadrian. It would be nice to turn on -Werror on at least one build of Hadrian in CI to avoid a patch introducing warnings when building Hadrian. Fixes #23638 - - - - - aca20a5d by Ben Gamari at 2023-08-02T06:03:55-04:00 codeGen: Ensure that TSAN is aware of writeArray# write barriers By using a proper release store instead of a fence. - - - - - 453c0531 by Ben Gamari at 2023-08-02T06:03:55-04:00 codeGen: Ensure that array reads have necessary barriers This was the cause of #23541. - - - - - 93a0d089 by Arnaud Spiwack at 2023-08-02T06:04:37-04:00 Add test for #23550 - - - - - 6a2f4a20 by Arnaud Spiwack at 2023-08-02T06:04:37-04:00 Desugar non-recursive lets to non-recursive lets (take 2) This reverts commit 522bd584f71ddeda21efdf0917606ce3d81ec6cc. And takes care of the case that I missed in my previous attempt. Namely the case of an AbsBinds with no type variables and no dictionary variable. Ironically, the comment explaining why non-recursive lets were desugared to recursive lets were pointing specifically at this case as the reason. I just failed to understand that it was until Simon PJ pointed it out to me. See #23550 for more discussion. - - - - - ff81d53f by jade at 2023-08-02T06:05:20-04:00 Expand documentation of List & Data.List This commit aims to improve the documentation and examples of symbols exported from Data.List - - - - - fa4e5913 by Jade at 2023-08-02T06:06:03-04:00 Improve documentation of Semigroup & Monoid This commit aims to improve the documentation of various symbols exported from Data.Semigroup and Data.Monoid - - - - - e2c91bff by Gergő Érdi at 2023-08-03T02:55:46+01:00 Desugar bindings in the context of their evidence Closes #23172 - - - - - 481f4a46 by Gergő Érdi at 2023-08-03T07:48:43+01:00 Add flag to `-f{no-}specialise-incoherents` to enable/disable specialisation of incoherent instances Fixes #23287 - - - - - d751c583 by Profpatsch at 2023-08-04T12:24:26-04:00 base: Improve String & IsString documentation - - - - - 01db1117 by Ben Gamari at 2023-08-04T12:25:02-04:00 rts/win32: Ensure reliability of IO manager shutdown When the Win32 threaded IO manager shuts down, `ioManagerDie` sends an `IO_MANAGER_DIE` event to the IO manager thread using the `io_manager_event` event object. Finally, it will closes the event object, and invalidate `io_manager_event`. Previously, `readIOManagerEvent` would see that `io_manager_event` is invalid and return `0`, suggesting that everything is right with the world. This meant that if `ioManagerDie` invalidated the handle before the event manager was blocked on the event we would end up in a situation where the event manager would never realize it was asked to shut down. Fix this by ensuring that `readIOManagerEvent` instead returns `IO_MANAGER_DIE` when we detect that the event object has been invalidated by `ioManagerDie`. Fixes #23691. - - - - - fdef003a by Ryan Scott at 2023-08-04T12:25:39-04:00 Look through TH splices in splitHsApps This modifies `splitHsApps` (a key function used in typechecking function applications) to look through untyped TH splices and quasiquotes. Not doing so was the cause of #21077. This builds on !7821 by making `splitHsApps` match on `HsUntypedSpliceTop`, which contains the `ThModFinalizers` that must be run as part of invoking the TH splice. See the new `Note [Looking through Template Haskell splices in splitHsApps]` in `GHC.Tc.Gen.Head`. Along the way, I needed to make the type of `splitHsApps.set` slightly more general to accommodate the fact that the location attached to a quasiquote is a `SrcAnn NoEpAnns` rather than a `SrcSpanAnnA`. Fixes #21077. - - - - - e77a0b41 by Ben Gamari at 2023-08-04T12:26:15-04:00 Bump deepseq submodule to 1.5. And bump bounds (cherry picked from commit 1228d3a4a08d30eaf0138a52d1be25b38339ef0b) - - - - - cebb5819 by Ben Gamari at 2023-08-04T12:26:15-04:00 configure: Bump minimal boot GHC version to 9.4 (cherry picked from commit d3ffdaf9137705894d15ccc3feff569d64163e8e) - - - - - 83766dbf by Ben Gamari at 2023-08-04T12:26:15-04:00 template-haskell: Bump version to 2.21.0.0 Bumps exceptions submodule. (cherry picked from commit bf57fc9aea1196f97f5adb72c8b56434ca4b87cb) - - - - - 1211112a by Ben Gamari at 2023-08-04T12:26:15-04:00 base: Bump version to 4.19 Updates all boot library submodules. (cherry picked from commit 433d99a3c24a55b14ec09099395e9b9641430143) - - - - - 3ab5efd9 by Ben Gamari at 2023-08-04T12:26:15-04:00 testsuite: Normalise versions more aggressively In backpack hashes can contain `+` characters. (cherry picked from commit 024861af51aee807d800e01e122897166a65ea93) - - - - - d52be957 by Ben Gamari at 2023-08-04T12:26:15-04:00 testsuite: Declare bkpcabal08 as fragile Due to spurious output changes described in #23648. (cherry picked from commit c046a2382420f2be2c4a657c56f8d95f914ea47b) - - - - - e75a58d1 by Ben Gamari at 2023-08-04T12:26:15-04:00 gitlab-ci: Only mark linker_unload_native as broken in static jobs This test passes on dynamically-linked Alpine. (cherry picked from commit f356a7e8ec8ec3d6b2b30fd175598b9b80065d87) - - - - - 8b176514 by Ben Gamari at 2023-08-04T12:26:15-04:00 testsuite: Update base-exports - - - - - 4b647936 by Ben Gamari at 2023-08-04T12:26:15-04:00 testsuite/interface-stability: normalise versions This eliminates spurious changes from version bumps. - - - - - 0eb54c05 by Ben Gamari at 2023-08-04T12:26:51-04:00 linker/PEi386: Don't sign-extend symbol section number Previously we incorrectly interpreted PE section numbers as signed values. However, this isn't the case; rather, it's an unsigned 16-bit number with a few special bit-patterns (0xffff and 0xfffe). This resulted in #22941 as the linker would conclude that the sections were invalid. Fixing this required quite a bit of refactoring. Closes #22941. - - - - - fd7ce39c by Ben Gamari at 2023-08-04T12:27:28-04:00 testsuite: Mark MulMayOflo_full as broken rather than skipping To ensure that we don't accidentally fix it. See #23742. - - - - - 824092f2 by Ben Gamari at 2023-08-04T12:27:28-04:00 nativeGen/AArch64: Fix sign extension in MulMayOflo Previously the 32-bit implementations of MulMayOflo would use the a non-sensical sign-extension mode. Rewrite these to reflect what gcc 11 produces. Also similarly rework the 16- and 8-bit cases. This now passes the MulMayOflo tests in ghc/test-primops> in all four widths, including the precision tests. Fixes #23721. - - - - - 1b15dbc4 by Jan Hrček at 2023-08-04T12:28:08-04:00 Fix haddock markup in code example for coerce - - - - - 46fd8ced by Vladislav Zavialov at 2023-08-04T12:28:44-04:00 Fix (~) and (@) infix operators in TH splices (#23748) 8168b42a "Whitespace-sensitive bang patterns" allows GHC to accept the following infix operators: a ~ b = () a @ b = () But not if TH is used to generate those declarations: $([d| a ~ b = () a @ b = () |]) -- Test.hs:5:2: error: [GHC-55017] -- Illegal variable name: ‘~’ -- When splicing a TH declaration: (~_0) a_1 b_2 = GHC.Tuple.Prim.() This is easily fixed by modifying `reservedOps` in GHC.Utils.Lexeme - - - - - a1899d8f by Aaron Allen at 2023-08-04T12:29:24-04:00 [#23663] Show Flag Suggestions in GHCi Makes suggestions when using `:set` in GHCi with a misspelled flag. This mirrors how invalid flags are handled when passed to GHC directly. Logic for producing flag suggestions was moved to GHC.Driver.Sesssion so it can be shared. resolves #23663 - - - - - 03f2debd by Rodrigo Mesquita at 2023-08-04T12:30:00-04:00 Improve ghc-toolchain validation configure warning Fixes the layout of the ghc-toolchain validation warning produced by configure. - - - - - de25487d by Alan Zimmerman at 2023-08-04T12:30:36-04:00 EPA make getLocA a synonym for getHasLoc This is basically a no-op change, but allows us to make future changes that can rely on the HasLoc instances And I presume this means we can use more precise functions based on class resolution, so the Windows CI build reports Metric Decrease: T12234 T13035 - - - - - 3ac423b9 by Ben Gamari at 2023-08-04T12:31:13-04:00 ghc-platform: Add upper bound on base Hackage upload requires this. - - - - - 8ba20b21 by Matthew Craven at 2023-08-04T17:22:59-04:00 Adjust and clarify handling of primop effects Fixes #17900; fixes #20195. The existing "can_fail" and "has_side_effects" primop attributes that previously governed this were used in inconsistent and confusingly-documented ways, especially with regard to raising exceptions. This patch replaces them with a single "effect" attribute, which has four possible values: NoEffect, CanFail, ThrowsException, and ReadWriteEffect. These are described in Note [Classifying primop effects]. A substantial amount of related documentation has been re-drafted for clarity and accuracy. In the process of making this attribute format change for literally every primop, several existing mis-classifications were detected and corrected. One of these mis-classifications was tagToEnum#, which is now considered CanFail; this particular fix is known to cause a regression in performance for derived Enum instances. (See #23782.) Fixing this is left as future work. New primop attributes "cheap" and "work_free" were also added, and used in the corresponding parts of GHC.Core.Utils. In view of their actual meaning and uses, `primOpOkForSideEffects` and `exprOkForSideEffects` have been renamed to `primOpOkToDiscard` and `exprOkToDiscard`, respectively. Metric Increase: T21839c - - - - - 41bf2c09 by sheaf at 2023-08-04T17:23:42-04:00 Update inert_solved_dicts for ImplicitParams When adding an implicit parameter dictionary to the inert set, we must make sure that it replaces any previous implicit parameter dictionaries that overlap, in order to get the appropriate shadowing behaviour, as in let ?x = 1 in let ?x = 2 in ?x We were already doing this for inert_cans, but we weren't doing the same thing for inert_solved_dicts, which lead to the bug reported in #23761. The fix is thus to make sure that, when handling an implicit parameter dictionary in updInertDicts, we update **both** inert_cans and inert_solved_dicts to ensure a new implicit parameter dictionary correctly shadows old ones. Fixes #23761 - - - - - 43578d60 by Matthew Craven at 2023-08-05T01:05:36-04:00 Bump bytestring submodule to 0.11.5.1 - - - - - 91353622 by Ben Gamari at 2023-08-05T01:06:13-04:00 Initial commit of Note [Thunks, blackholes, and indirections] This Note attempts to summarize the treatment of thunks, thunk update, and indirections. This fell out of work on #23185. - - - - - 8d686854 by sheaf at 2023-08-05T01:06:54-04:00 Remove zonk in tcVTA This removes the zonk in GHC.Tc.Gen.App.tc_inst_forall_arg and its accompanying Note [Visible type application zonk]. Indeed, this zonk is no longer necessary, as we no longer maintain the invariant that types are well-kinded without zonking; only that typeKind does not crash; see Note [The Purely Kinded Type Invariant (PKTI)]. This commit removes this zonking step (as well as a secondary zonk), and replaces the aforementioned Note with the explanatory Note [Type application substitution], which justifies why the substitution performed in tc_inst_forall_arg remains valid without this zonking step. Fixes #23661 - - - - - 19dea673 by Ben Gamari at 2023-08-05T01:07:30-04:00 Bump nofib submodule Ensuring that nofib can be build using the same range of bootstrap compilers as GHC itself. - - - - - aa07402e by Luite Stegeman at 2023-08-05T23:15:55+09:00 JS: Improve compatibility with recent emsdk The JavaScript code in libraries/base/jsbits/base.js had some hardcoded offsets for fields in structs, because we expected the layout of the data structures to remain unchanged. Emsdk 3.1.42 changed the layout of the stat struct, breaking this assumption, and causing code in .hsc files accessing the stat struct to fail. This patch improves compatibility with recent emsdk by removing the assumption that data layouts stay unchanged: 1. offsets of fields in structs used by JavaScript code are now computed by the configure script, so both the .js and .hsc files will automatically use the new layout if anything changes. 2. the distrib/configure script checks that the emsdk version on a user's system is the same version that a bindist was booted with, to avoid data layout inconsistencies See #23641 - - - - - b938950d by Luite Stegeman at 2023-08-07T06:27:51-04:00 JS: Fix missing local variable declarations This fixes some missing local variable declarations that were found by running the testsuite in strict mode. Fixes #23775 - - - - - 6c0e2247 by sheaf at 2023-08-07T13:31:21-04:00 Update Haddock submodule to fix #23368 This submodule update adds the following three commits: bbf1c8ae - Check for puns 0550694e - Remove fake exports for (~), List, and Tuple<n> 5877bceb - Fix pretty-printing of Solo and MkSolo These commits fix the issues with Haddock HTML rendering reported in ticket #23368. Fixes #23368 - - - - - 5b5be3ea by Matthew Pickering at 2023-08-07T13:32:00-04:00 Revert "Bump bytestring submodule to 0.11.5.1" This reverts commit 43578d60bfc478e7277dcd892463cec305400025. Fixes #23789 - - - - - 01961be3 by Ben Gamari at 2023-08-08T02:47:14-04:00 configure: Derive library version from ghc-prim.cabal.in Since ghc-prim.cabal is now generated by Hadrian, we cannot depend upon it. Closes #23726. - - - - - 3b373838 by Ryan Scott at 2023-08-08T02:47:49-04:00 tcExpr: Push expected types for untyped TH splices inwards In !10911, I deleted a `tcExpr` case for `HsUntypedSplice` in favor of a much simpler case that simply delegates to `tcApp`. Although this passed the test suite at the time, this was actually an error, as the previous `tcExpr` case was critically pushing the expected type inwards. This actually matters for programs like the one in #23796, which GHC would not accept with type inference alone—we need full-blown type _checking_ to accept these. I have added back the previous `tcExpr` case for `HsUntypedSplice` and now explain why we have two different `HsUntypedSplice` cases (one in `tcExpr` and another in `splitHsApps`) in `Note [Looking through Template Haskell splices in splitHsApps]` in `GHC.Tc.Gen.Head`. Fixes #23796. - - - - - 0ef1d8ae by sheaf at 2023-08-08T21:26:51-04:00 Compute all emitted diagnostic codes This commit introduces in GHC.Types.Error.Codes the function constructorCodes :: forall diag. (...) => Map DiagnosticCode String which computes a collection of all the diagnostic codes that correspond to a particular type. In particular, we can compute the collection of all diagnostic codes emitted by GHC using the invocation constructorCodes @GhcMessage We then make use of this functionality in the new "codes" test which checks consistency and coverage of GHC diagnostic codes. It performs three checks: - check 1: all non-outdated GhcDiagnosticCode equations are statically used. - check 2: all outdated GhcDiagnosticCode equations are statically unused. - check 3: all statically used diagnostic codes are covered by the testsuite (modulo accepted exceptions). - - - - - 4bc7b1e5 by Fraser Tweedale at 2023-08-08T21:27:32-04:00 numberToRangedRational: fix edge cases for exp ≈ (maxBound :: Int) Currently a negative exponent less than `minBound :: Int` results in Infinity, which is very surprising and obviously wrong. ``` λ> read "1e-9223372036854775808" :: Double 0.0 λ> read "1e-9223372036854775809" :: Double Infinity ``` There is a further edge case where the exponent can overflow when increased by the number of tens places in the integer part, or underflow when decreased by the number of leading zeros in the fractional part if the integer part is zero: ``` λ> read "10e9223372036854775807" :: Double 0.0 λ> read "0.01e-9223372036854775808" :: Double Infinity ``` To resolve both of these issues, perform all arithmetic and comparisons involving the exponent in type `Integer`. This approach also eliminates the need to explicitly check the exponent against `maxBound :: Int` and `minBound :: Int`, because the allowed range of the exponent (i.e. the result of `floatRange` for the target floating point type) is certainly within those bounds. This change implements CLC proposal 192: https://github.com/haskell/core-libraries-committee/issues/192 - - - - - 6eab07b2 by Alan Zimmerman at 2023-08-08T21:28:10-04:00 EPA: Remove Location from WarningTxt source This is not needed. - - - - - 1a98d673 by Sebastian Graf at 2023-08-09T16:24:29-04:00 Cleanup a TODO introduced in 1f94e0f7 The change must have slipped through review of !4412 - - - - - 2274abc8 by Sebastian Graf at 2023-08-09T16:24:29-04:00 More explicit strictness in GHC.Real - - - - - ce8aa54c by Sebastian Graf at 2023-08-09T16:24:30-04:00 exprIsTrivial: Factor out shared implementation The duplication between `exprIsTrivial` and `getIdFromTrivialExpr_maybe` has been bugging me for a long time. This patch introduces an inlinable worker function `trivial_expr_fold` acting as the single, shared decision procedure of triviality. It "returns" a Church-encoded `Maybe (Maybe Id)`, so when it is inlined, it fuses to similar code as before. (Better code, even, in the case of `getIdFromTrivialExpr` which presently allocates a `Just` constructor that cancels away after this patch.) - - - - - d004a36d by Sebastian Graf at 2023-08-09T16:24:30-04:00 Simplify: Simplification of arguments in a single function 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`. - - - - - 8c73505e by Sebastian Graf at 2023-08-09T16:24:30-04:00 Core.Ppr: Omit case binder for empty case alternatives A minor improvement to pretty-printing - - - - - d8d993f1 by Sebastian Graf at 2023-08-09T16:24:30-04:00 Disable tests RepPolyWrappedVar2 and RepPolyUnsafeCoerce1 in JS backend ... because those coerce between incompatible/unknown PrimReps. - - - - - f06e87e4 by Sebastian Graf at 2023-08-09T16:24:30-04:00 Inlining literals into boring contexts is OK - - - - - 4a6b7c87 by Sebastian Graf at 2023-08-09T16:24:30-04:00 Clarify floating of unsafeEqualityProofs (#23754) - - - - - b0f4752e by Sebastian Graf at 2023-08-09T16:24:30-04:00 Kill SetLevel.notWorthFloating.is_triv (#23270) We have had it since b84ba676034, when it operated on annotated expressions. Nowadays it operates on vanilla `CoreExpr` though, so we should just call `exprIsTrivial`; thus handling empty cases and string literals correctly. - - - - - 7e0c8b3b by Sebastian Graf at 2023-08-09T16:24:30-04:00 ANFise string literal arguments (#23270) This instates the invariant that a trivial CoreExpr translates to an atomic StgExpr. Nice. Annoyingly, in -O0 we sometimes generate ``` foo = case "blah"# of sat { __DEFAULT -> unpackCString# sat } ``` which makes it a bit harder to spot that we can emit a standard `stg_unpack_cstring` thunk. Fixes #23270. - - - - - 357f2738 by Sebastian Graf at 2023-08-09T16:24:30-04:00 Deactivate -fcatch-nonexhaustive-cases in ghc-bignum (#23345) - - - - - 59202c80 by Sebastian Graf at 2023-08-09T16:24:30-04:00 CorePrep: Eliminate EmptyCase and unsafeEqualityProof in CoreToStg instead We eliminate EmptyCase by way of `coreToStg (Case e _ _ []) = coreToStg e` now. The main reason is that it plays far better in conjunction with eta expansion (as we aim to do for arguments in CorePrep, #23083), because we can discard any arguments, `(case e of {}) eta == case e of {}`, whereas in `(e |> co) eta` it's impossible to discard the argument. We do also give the same treatment to unsafeCoerce proofs and treat them as trivial iff their RHS is trivial. It is also both much simpler to describe than the previous mechanism of emitting an unsafe coercion and simpler to implement, removing quite a bit of commentary and `CorePrepProv`. In the ghc/alloc perf test `LargeRecord`, we introduce an additional Simplifier iteration due to #17910. E.g., FloatOut produces a binding ``` lvl_s6uK [Occ=Once1] :: GHC.Types.Int [LclId] lvl_s6uK = GHC.Types.I# 2# lvl_s6uL [Occ=Once1] :: GHC.Types.Any [LclId] lvl_s6uL = case Unsafe.Coerce.unsafeEqualityProof ... of { Unsafe.Coerce.UnsafeRefl v2_i6tr -> lvl_s6uK `cast` (... v2_i6tr ...) } ``` That occurs once and hence is pre-inlined unconditionally in the next Simplifier pass. It's non-trivial to find a way around that, but not really harmful otherwise. Hence we accept a 1.2% increase on some architectures. Metric Increase: LargeRecord - - - - - 00d31188 by Sebastian Graf at 2023-08-09T16:24:30-04:00 CorePrep: 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) ``` in CorePrep. See the new `Note [Eta expansion of arguments in CorePrep]` for the details. We only do this optimisation with -O2 because we saw 2-3% ghc/alloc regressions in T4801 and T5321FD. Fixes #23083. - - - - - bf885d7a by Matthew Craven at 2023-08-09T16:25:07-04:00 Bump bytestring submodule to 0.11.5, again Fixes #23789. The bytestring commit used here is unreleased; a release can be made when necessary. - - - - - 7acbf0fd by Sven Tennie at 2023-08-10T19:17:11-04:00 Serialize CmmRetInfo in .rodata The handling of case was missing. - - - - - 0c3136f2 by Sven Tennie at 2023-08-10T19:17:11-04:00 Reference StgRetFun payload by its struct field address This is easier to grasp than relative pointer offsets. - - - - - f68ff313 by Sven Tennie at 2023-08-10T19:17:11-04:00 Better variable name: u -> frame The 'u' was likely introduced by copy'n'paste. - - - - - 0131bb7f by Sven Tennie at 2023-08-10T19:17:11-04:00 Make checkSTACK() public Such that it can also be used in tests. - - - - - 7b6e1e53 by Sven Tennie at 2023-08-10T19:17:11-04:00 Publish stack related fields in DerivedConstants.h These will be used in ghc-heap to decode these parts of the stack. - - - - - 907ed054 by Sven Tennie at 2023-08-10T19:17:11-04:00 ghc-heap: Decode StgStack and its stack frames Previously, ghc-heap could only decode heap closures. The approach is explained in detail in note [Decoding the stack]. - - - - - 6beb6ac2 by Sven Tennie at 2023-08-10T19:17:11-04:00 Remove RetFunType from RetFun stack frame representation It's a technical detail. The single usage is replaced by a predicate. - - - - - 006bb4f3 by Sven Tennie at 2023-08-10T19:17:11-04:00 Better parameter name The call-site uses the term "offset", too. - - - - - d4c2c1af by Sven Tennie at 2023-08-10T19:17:11-04:00 Make closure boxing pure There seems to be no need to do something complicated. However, the strictness of the closure pointer matters, otherwise a thunk gets decoded. - - - - - 8d8426c9 by Sven Tennie at 2023-08-10T19:17:11-04:00 Document entertainGC in test It wasn't obvious why it's there and what its role is. Also, increase the "entertainment level" a bit. I checked in STG and Cmm dumps that this really generates closures (and is not e.g. constant folded away.) - - - - - cc52c358 by Finley McIlwaine at 2023-08-10T19:17:47-04:00 Add -dipe-stats flag This is useful for seeing which info tables have information. - - - - - 261c4acb by Finley McIlwaine at 2023-08-10T19:17:47-04:00 Add -finfo-table-map-with-fallback -finfo-table-map-with-stack The -fno-info-table-map-with-stack flag omits STACK info tables from the info table map, and the -fno-info-table-map-with-fallback flag omits info tables with defaulted source locations from the map. In a test on the Agda codebase the build results were about 7% smaller when both of those types of tables were omitted. Adds a test that verifies that passing each combination of these flags results in the correct output for -dipe-stats, which is disabled for the js backend since profiling is not implemented. This commit also refactors a lot of the logic around extracting info tables from the Cmm results and building the info table map. This commit also fixes some issues in the users guide rst source to fix warnings that were noticed while debugging the documentation for these flags. Fixes #23702 - - - - - d7047e0d by Jaro Reinders at 2023-08-14T04:41:42-04:00 Add changelog entry for specialised Enum Int64/Word64 instances - - - - - 52f5e8fb by cydparser at 2023-08-14T04:42:20-04:00 Fix -ddump-to-file and -ddump-timings interaction (#20316) - - - - - 1274c5d6 by cydparser at 2023-08-14T04:42:20-04:00 Update release notes (#20316) - - - - - 8e699b23 by Matthew Pickering at 2023-08-14T10:44:47-04:00 base: Add changelog entry for CLC #188 This proposal modified the implementations of copyBytes, moveBytes and fillBytes (as detailed in the proposal) https://github.com/haskell/core-libraries-committee/issues/188 - - - - - 026f040a by Matthew Pickering at 2023-08-14T10:45:23-04:00 packaging: Build manpage in separate directory to other documentation We were installing two copies of the manpage: * One useless one in the `share/doc` folder, because we copy the doc/ folder into share/ * The one we deliberately installed into `share/man` etc The solution is to build the manpage into the `manpage` directory when building the bindist, and then just install it separately. Fixes #23707 - - - - - 524c60c8 by Bartłomiej Cieślar at 2023-08-14T13:46:33-04:00 Report deprecated fields bound by record wildcards when used This commit ensures that we emit the appropriate warnings when a deprecated record field bound by a record wildcard is used. For example: module A where data Foo = Foo {x :: Int, y :: Bool, z :: Char} {-# DEPRECATED x "Don't use x" #-} {-# WARNING y "Don't use y" #-} module B where import A foo (Foo {..}) = x This will cause us to emit a "Don't use x" warning, with location the location of the record wildcard. Note that we don't warn about `y`, because it is unused in the RHS of `foo`. Fixes #23382 - - - - - d6130065 by Matthew Pickering at 2023-08-14T13:47:11-04:00 Add zstd suffix to jobs which rely on zstd This was causing some confusion as the job was named simply "x86_64-linux-deb10-validate", which implies a standard configuration rather than any dependency on libzstd. - - - - - e24e44fc by Matthew Pickering at 2023-08-14T13:47:11-04:00 ci: Always run project-version job This is needed for the downstream test-primops pipeline to workout what the version of a bindist produced by a pipeline is. - - - - - f17b9d62 by Matthew Pickering at 2023-08-14T13:47:11-04:00 gen_ci: Rework how jobs-metadata.json is generated * We now represent a job group a triple of Maybes, which makes it easier to work out when jobs are enabled/disabled on certain pipelines. ``` data JobGroup a = StandardTriple { v :: Maybe (NamedJob a) , n :: Maybe (NamedJob a) , r :: Maybe (NamedJob a) } ``` * `jobs-metadata.json` generation is reworked using the following algorithm. - For each pipeline type, find all the platforms we are doing builds for. - Select one build per platform - Zip together the results This way we can choose different pipelines for validate/nightly/release which makes the metadata also useful for validate pipelines. This feature is used by the test-primops downstream CI in order to select the right bindist for testing validate pipelines. This makes it easier to inspect which jobs are going to be enabled on a particular pipeline. - - - - - f9a5563d by Matthew Pickering at 2023-08-14T13:47:11-04:00 gen_ci: Rules rework In particular we now distinguish between whether we are dealing with a Nightly/Release pipeline (which labels don't matter for) and a validate pipeline where labels do matter. The overall goal here is to allow a disjunction of labels for validate pipelines, for example,

Run a job if we have the full-ci label or test-primops label

Therefore the "ValidateOnly" rules are treated as a set of disjunctions rather than conjunctions like before. What this means in particular is that if we want to ONLY run a job if a label is set, for example, "FreeBSD" label then we have to override the whole label set. Fixes #23772 - - - - - d54b0c1d by Matthew Pickering at 2023-08-14T13:47:11-04:00 ci: set -e for lint-ci-config scripts - - - - - 994a9b35 by Matthew Pickering at 2023-08-14T13:47:11-04:00 ci: Fix job metadata generation - - - - - e194ed2b by Ben Gamari at 2023-08-15T00:58:09-04:00 users-guide: Note that GHC2021 doesn't include ExplicitNamespaces As noted in #23801. - - - - - d814bda9 by Ben Gamari at 2023-08-15T05:43:53-04:00 users-guide: Support both distutils and packaging As noted in #23818, some old distributions (e.g. Debian 9) only include `distutils` while newer distributions only include `packaging`. Fixes #23818. - - - - - 1726db3f by Ben Gamari at 2023-08-15T05:43:53-04:00 users-guide: Ensure extlinks is compatible with Sphinx <4 The semantics of the `extlinks` attribute annoyingly changed in Sphinx 4. Reflect this in our configuration. See #22690. Fixes #23807. - - - - - 173338cf by Matthew Pickering at 2023-08-15T22:00:24-04:00 ci: Run full-ci on master and release branches Fixes #23737 - - - - - bdab6898 by Andrew Lelechenko at 2023-08-15T22:01:03-04:00 Add @since pragmas for Data.Ord.clamp and GHC.Float.clamp - - - - - 662d351b by Matthew Pickering at 2023-08-16T09:35:04-04:00 ghc-toolchain: Match CPP args with configure script At the moment we need ghc-toolchain to precisely match the output as provided by the normal configure script. The normal configure script (FP_HSCPP_CMD_WITH_ARGS) branches on whether we are using clang or gcc so we match that logic exactly in ghc-toolchain. The old implementation (which checks if certain flags are supported) is better but for now we have to match to catch any potential errors in the configuration. Ticket: #23720 - - - - - 09c6759e by Matthew Pickering at 2023-08-16T09:35:04-04:00 configure: Fix `-Wl,--no-as-needed` check The check was failing because the args supplied by $$1 were quoted which failed because then the C compiler thought they were an input file. Fixes #23720 - - - - - 2129678b by Matthew Pickering at 2023-08-16T09:35:04-04:00 configure: Add flag which turns ghc-toolchain check into error We want to catch these errors in CI, but first we need to a flag which turns this check into an error. - - - - - 6e2aa8e0 by Matthew Pickering at 2023-08-16T09:35:04-04:00 ci: Enable --enable-strict-ghc-toolchain-check for all CI jobs This will cause any CI job to fail if we have a mismatch between what ghc-toolchain reports and what ./configure natively reports. Fixing these kinds of issues is highest priority for 9.10 release. - - - - - 12d39e24 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00 Pass user-specified options to ghc-toolchain The current user interface to configuring target toolchains is `./configure`. In !9263 we added a new tool to configure target toolchains called `ghc-toolchain`, but the blessed way of creating these toolchains is still through configure. However, we were not passing the user-specified options given with the `./configure` invocation to the ghc-toolchain tool. This commit remedies that by storing the user options and environment variables in USER_* variables, which then get passed to GHC-toolchain. The exception to the rule is the windows bundled toolchain, which overrides the USER_* variables with whatever flags the windows bundled toolchain requires to work. We consider the bundled toolchain to be effectively the user specifying options, since the actual user delegated that configuration work. Closes #23678 - - - - - f7b3c3a0 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00 ghc-toolchain: Parse javascript and ghcjs as a Arch and OS - - - - - 8a0ae4ee by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00 ghc-toolchain: Fix ranlib option - - - - - 31e9ec96 by Rodrigo Mesquita at 2023-08-16T09:35:04-04:00 Check Link Works with -Werror - - - - - bc1998b3 by Matthew Pickering at 2023-08-16T09:35:04-04:00 Only check for no_compact_unwind support on darwin While writing ghc-toolchain we noticed that the FP_PROG_LD_NO_COMPACT_UNWIND check is subtly wrong. Specifically, we pass -Wl,-no_compact_unwind to cc. However, ld.gold interprets this as -n o_compact_unwind, which is a valid argument. Fixes #23676 - - - - - 0283f36e by Matthew Pickering at 2023-08-16T09:35:04-04:00 Add some javascript special cases to ghc-toolchain On javascript there isn't a choice of toolchain but some of the configure checks were not accurately providing the correct answer. 1. The linker was reported as gnu LD because the --version output mentioned gnu LD. 2. The --target flag makes no sense on javascript but it was just ignored by the linker, so we add a special case to stop ghc-toolchain thinking that emcc supports --target when used as a linker. - - - - - a48ec5f8 by Matthew Pickering at 2023-08-16T09:35:04-04:00 check for emcc in gnu_LD check - - - - - 50df2e69 by Matthew Pickering at 2023-08-16T09:35:04-04:00 Add ldOverrideWhitelist to only default to ldOverride on windows/linux On some platforms - ie darwin, javascript etc we really do not want to allow the user to use any linker other than the default one as this leads to all kinds of bugs. Therefore it is a bit more prudant to add a whitelist which specifies on which platforms it might be possible to use a different linker. - - - - - a669a39c by Matthew Pickering at 2023-08-16T09:35:04-04:00 Fix plaform glob in FPTOOLS_SET_C_LD_FLAGS A normal triple may look like x86_64-unknown-linux but when cross-compiling you get $target set to a quad such as.. aarch64-unknown-linux-gnu Which should also match this check. - - - - - c52b6769 by Matthew Pickering at 2023-08-16T09:35:04-04:00 ghc-toolchain: Pass ld-override onto ghc-toolchain - - - - - 039b484f by Matthew Pickering at 2023-08-16T09:35:04-04:00 ld override: Make whitelist override user given option - - - - - d2b63cbc by Matthew Pickering at 2023-08-16T09:35:05-04:00 ghc-toolchain: Add format mode to normalise differences before diffing. The "format" mode takes an "--input" and "--ouput" target file and formats it. This is intended to be useful on windows where the configure/ghc-toolchain target files can't be diffed very easily because the path separators are different. - - - - - f2b39e4a by Matthew Pickering at 2023-08-16T09:35:05-04:00 ghc-toolchain: Bump ci-images commit to get new ghc-wasm-meta We needed to remove -Wno-unused-command-line-argument from the arguments passed in order for the configure check to report correctly. See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10976#note_516335 - - - - - 92103830 by Matthew Pickering at 2023-08-16T09:35:05-04:00 configure: MergeObjsCmd - distinguish between empty string and unset variable If `MergeObjsCmd` is explicitly set to the empty string then we should assume that MergeObjs is just not supported. This is especially important for windows where we set MergeObjsCmd to "" in m4/fp_setup_windows_toolchain.m4. - - - - - 3500bb2c by Matthew Pickering at 2023-08-16T09:35:05-04:00 configure: Add proper check to see if object merging works - - - - - 08c9a014 by Matthew Pickering at 2023-08-16T09:35:05-04:00 ghc-toolchain: If MergeObjsCmd is not set, replace setting with Nothing If the user explicitly chooses to not set a MergeObjsCmd then it is correct to use Nothing for tgtMergeObjs field in the Target file. - - - - - c9071d94 by Matthew Pickering at 2023-08-16T09:35:05-04:00 HsCppArgs: Augment the HsCppOptions This is important when we pass -I when setting up the windows toolchain. - - - - - 294a6d80 by Matthew Pickering at 2023-08-16T09:35:05-04:00 Set USER_CPP_ARGS when setting up windows toolchain - - - - - bde4b5d4 by Rodrigo Mesquita at 2023-08-16T09:35:05-04:00 Improve handling of Cc as a fallback - - - - - f4c1c3a3 by Rodrigo Mesquita at 2023-08-16T09:35:05-04:00 ghc-toolchain: Configure Cpp and HsCpp correctly when user specifies flags In ghc-toolchain, we were only /not/ configuring required flags when the user specified any flags at all for the of the HsCpp and Cpp tools. Otherwise, the linker takes into consideration the user specified flags to determine whether to search for a better linker implementation, but already configured the remaining GHC and platform-specific flags regardless of the user options. Other Tools consider the user options as a baseline for further configuration (see `findProgram`), so #23689 is not applicable. Closes #23689 - - - - - bfe4ffac by Matthew Pickering at 2023-08-16T09:35:05-04:00 CPP_ARGS: Put new options after user specified options This matches up with the behaviour of ghc-toolchain, so that the output of both matches. - - - - - a6828173 by Gergő Érdi at 2023-08-16T09:35:41-04:00 If a defaulting plugin made progress, re-zonk wanteds before built-in defaulting Fixes #23821. - - - - - e2b38115 by Sylvain Henry at 2023-08-17T07:54:06-04:00 JS: implement openat(AT_FDCWD...) (#23697) Use `openSync` to implement `openat(AT_FDCWD...)`. - - - - - a975c663 by sheaf at 2023-08-17T07:54:47-04:00 Use unsatisfiable for missing methods w/ defaults When a class instance has an Unsatisfiable constraint in its context and the user has not explicitly provided an implementation of a method, we now always provide a RHS of the form `unsatisfiable @msg`, even if the method has a default definition available. This ensures that, when deferring type errors, users get the appropriate error message instead of a possible runtime loop, if class default methods were defined recursively. Fixes #23816 - - - - - 45ca51e5 by Ben Gamari at 2023-08-17T15:16:41-04:00 ghc-internal: Initial commit of the skeleton - - - - - 88bbf8c5 by Ben Gamari at 2023-08-17T15:16:41-04:00 ghc-experimental: Initial commit - - - - - 664468c0 by Ben Gamari at 2023-08-17T15:17:17-04:00 testsuite/cloneStackLib: Fix incorrect format specifiers - - - - - eaa835bb by Ben Gamari at 2023-08-17T15:17:17-04:00 rts/ipe: Fix const-correctness of IpeBufferListNode Both info tables and the string table should be `const` - - - - - 78f6f6fd by Ben Gamari at 2023-08-17T15:17:17-04:00 nonmoving: Drop dead debugging utilities These are largely superceded by support in the ghc-utils GDB extension. - - - - - 3f6e8f42 by Ben Gamari at 2023-08-17T15:17:17-04:00 nonmoving: Refactor management of mark thread Here we refactor that treatment of the worker thread used by the nonmoving GC for concurrent marking, avoiding creating a new thread with every major GC cycle. As well, the new scheme is considerably easier to reason about, consolidating all state in one place, accessed via a small set of accessors with clear semantics. - - - - - 88c32b7d by Ben Gamari at 2023-08-17T15:17:17-04:00 testsuite: Skip T23221 in nonmoving GC ways This test is very dependent upon GC behavior. - - - - - 381cfaed by Ben Gamari at 2023-08-17T15:17:17-04:00 ghc-heap: Don't expose stack dirty and marking fields These are GC metadata and are not relevant to the end-user. Moreover, they are unstable which makes ghc-heap harder to test than necessary. - - - - - 16828ca5 by Luite Stegeman at 2023-08-21T18:42:53-04:00 bump process submodule to include macOS fix and JS support - - - - - b4d5f6ed by Matthew Pickering at 2023-08-21T18:43:29-04:00 ci: Add support for triggering test-primops pipelines This commit adds 4 ways to trigger testing with test-primops. 1. Applying the ~test-primops label to a validate pipeline. 2. A manually triggered job on a validate pipeline 3. A nightly pipeline job 4. A release pipeline job Fixes #23695 - - - - - 32c50daa by Matthew Pickering at 2023-08-21T18:43:29-04:00 Add test-primops label support The test-primops CI job requires some additional builds in the validation pipeline, so we make sure to enable these jobs when test-primops label is set. - - - - - 73ca8340 by Matthew Pickering at 2023-08-21T18:43:29-04:00 Revert "Aarch ncg: Optimize immediate use for address calculations" This reverts commit 8f3b3b78a8cce3bd463ed175ee933c2aabffc631. See #23793 - - - - - 5546ad9e by Matthew Pickering at 2023-08-21T18:43:29-04:00 Revert "AArch NCG: Pure refactor" This reverts commit 00fb6e6b06598752414a0b9a92840fb6ca61338d. See #23793 - - - - - 02dfcdc2 by Matthew Pickering at 2023-08-21T18:43:29-04:00 Revert "Aarch64 NCG: Use encoded immediates for literals." This reverts commit 40425c5021a9d8eb5e1c1046e2d5fa0a2918f96c. See #23793 ------------------------- Metric Increase: T4801 T5321FD T5321Fun ------------------------- - - - - - 7be4a272 by Matthew Pickering at 2023-08-22T08:55:20+01:00 ci: Remove manually triggered test-ci job This doesn't work on slimmed down pipelines as the needed jobs don't exist. If you want to run test-primops then apply the label. - - - - - 76a4d11b by Jaro Reinders at 2023-08-22T08:08:13-04:00 Remove Ptr example from roles docs - - - - - 069729d3 by Bryan Richter at 2023-08-22T08:08:49-04:00 Guard against duplicate pipelines in forks - - - - - f861423b by Rune K. Svendsen at 2023-08-22T08:09:35-04:00 dump-decls: fix "Ambiguous module name"-error Fixes errors of the following kind, which happen when dump-decls is run on a package that contains a module name that clashes with that of another package. ``` dump-decls: <no location info>: error: Ambiguous module name `System.Console.ANSI.Types': it was found in multiple packages: ansi-terminal-0.11.4 ansi-terminal-types-0.11.5 ``` - - - - - edd8bc43 by Krzysztof Gogolewski at 2023-08-22T12:31:20-04:00 Fix MultiWayIf linearity checking (#23814) Co-authored-by: Thomas BAGREL <thomas.bagrel@tweag.io> - - - - - 4ba088d1 by konsumlamm at 2023-08-22T12:32:02-04:00 Update `Control.Concurrent.*` documentation - - - - - 015886ec by ARATA Mizuki at 2023-08-22T15:13:13-04:00 Support 128-bit SIMD on AArch64 via LLVM backend - - - - - 52a6d868 by Krzysztof Gogolewski at 2023-08-22T15:13:51-04:00 Testsuite cleanup - Remove misleading help text in perf_notes, ways are not metrics - Remove no_print_summary - this was used for Phabricator - In linters tests, run 'git ls-files' just once. Previously, it was called on each has_ls_files() - Add ghc-prim.cabal to gitignore, noticed in #23726 - Remove ghc-prim.cabal, it was accidentally committed in 524c60c8cd - - - - - ab40aa52 by Alan Zimmerman at 2023-08-22T15:14:28-04:00 EPA: Use Introduce [DeclTag] in AnnSortKey The AnnSortKey is used to keep track of the order of declarations for printing when the container has split them apart. This applies to HsValBinds and ClassDecl, ClsInstDecl. When making modifications to the list of declarations, the new order must be captured for when it must be printed. For each list of declarations (binds and sigs for a HsValBind) we can just store the list in order. To recreate the list when printing, we must merge them, and this is what the AnnSortKey records. It used to be indexed by SrcSpan, we now simply index by a marker as to which list to take the next item from. - - - - - e7db36c1 by sheaf at 2023-08-23T08:41:28-04:00 Don't attempt pattern synonym error recovery This commit gets rid of the pattern synonym error recovery mechanism (recoverPSB). The rationale is that the fake pattern synonym binding that the recovery mechanism introduced could lead to undesirable knock-on errors, and it isn't really feasible to conjure up a satisfactory binding as pattern synonyms can be used both in expressions and patterns. See Note [Pattern synonym error recovery] in GHC.Tc.TyCl.PatSyn. It isn't such a big deal to eagerly fail compilation on a pattern synonym that doesn't typecheck anyway. Fixes #23467 - - - - - 6ccd9d65 by Ben Gamari at 2023-08-23T08:42:05-04:00 base: Don't use Data.ByteString.Internals.memcpy This function is now deprecated from `bytestring`. Use `Foreign.Marshal.Utils.copyBytes` instead. Fixes #23880. - - - - - 0bfa0031 by Matthew Pickering at 2023-08-23T13:43:48-04:00 hadrian: Uniformly pass buildOptions to all builders in runBuilder In Builder.hs, runBuilderWith mostly ignores the buildOptions in BuildInfo. This leads to hard to diagnose bugs as any build options you pass with runBuilderWithCmdOptions are ignored for many builders. Solution: Uniformly pass buildOptions to the invocation of cmd. Fixes #23845 - - - - - 9cac8f11 by Matthew Pickering at 2023-08-23T13:43:48-04:00 Abstract windows toolchain setup This commit splits up the windows toolchain setup logic into two functions. * FP_INSTALL_WINDOWS_TOOLCHAIN - deals with downloading the toolchain if it isn't already downloaded * FP_SETUP_WINDOWS_TOOLCHAIN - sets the environment variables to point to the correct place FP_SETUP_WINDOWS_TOOLCHAIN is abstracted from the location of the mingw toolchain and also the eventual location where we will install the toolchain in the installed bindist. This is the first step towards #23608 - - - - - 6c043187 by Matthew Pickering at 2023-08-23T13:43:48-04:00 Generate build.mk for bindists The config.mk.in script was relying on some variables which were supposed to be set by build.mk but therefore never were when used to install a bindist. Specifically * BUILD_PROF_LIBS to determine whether we had profiled libraries or not * DYNAMIC_GHC_PROGRAMS to determine whether we had shared libraries or not Not only were these never set but also not really accurate because you could have shared libaries but still statically linked ghc executable. In addition variables like GhcLibWays were just never used, so those have been deleted from the script. Now instead we generate a build.mk file which just directly specifies which RtsWays we have supplied in the bindist and whether we have DYNAMIC_GHC_PROGRAMS. - - - - - fe23629b by Matthew Pickering at 2023-08-23T13:43:48-04:00 hadrian: Add reloc-binary-dist-* targets This adds a command line option to build a "relocatable" bindist. The bindist is created by first creating a normal bindist and then installing it using the `RelocatableBuild=YES` option. This creates a bindist without any wrapper scripts pointing to the libdir. The motivation for this feature is that we want to ship relocatable bindists on windows and this method is more uniform than the ad-hoc method which lead to bugs such as #23608 and #23476 The relocatable bindist can be built with the "reloc-binary-dist" target and supports the same suffixes as the normal "binary-dist" command to specify the compression style. - - - - - 41cbaf44 by Matthew Pickering at 2023-08-23T13:43:48-04:00 packaging: Fix installation scripts on windows/RelocatableBuild case This includes quite a lot of small fixes which fix the installation makefile to work on windows properly. This also required fixing the RelocatableBuild variable which seemed to have been broken for a long while. Sam helped me a lot writing this patch by providing a windows machine to test the changes. Without him it would have taken ages to tweak everything. Co-authored-by: sheaf <sam.derbyshire@gmail.com> - - - - - 03474456 by Matthew Pickering at 2023-08-23T13:43:48-04:00 ci: Build relocatable bindist on windows We now build the relocatable bindist target on windows, which means we test and distribute the new method of creating a relocatable bindist. - - - - - d0b48113 by Matthew Pickering at 2023-08-23T13:43:48-04:00 hadrian: Add error when trying to build binary-dist target on windows The binary dist produced by `binary-dist` target doesn't work on windows because of the wrapper script the makefile installs. In order to not surprise any packagers we just give an error if someone tries to build the old binary-dist target rather than the reloc-binary-dist target. - - - - - 7cbf9361 by Matthew Pickering at 2023-08-23T13:43:48-04:00 hadrian: Remove query' logic to use tooldir - - - - - 03fad42e by Matthew Pickering at 2023-08-23T13:43:48-04:00 configure: Set WindresCmd directly and removed unused variables For some reason there was an indirection via the Windres variable before setting WindresCmd. That indirection led to #23855. I then also noticed that these other variables were just not used anywhere when trying to work out what the correct condition was for this bit of the configure script. - - - - - c82770f5 by sheaf at 2023-08-23T13:43:48-04:00 Apply shellcheck suggestion to SUBST_TOOLDIR - - - - - 896e35e5 by sheaf at 2023-08-23T13:44:34-04:00 Compute hints from TcSolverReportMsg This commit changes how hints are handled in conjunction with constraint solver report messages. Instead of storing `[GhcHint]` in the TcRnSolverReport error constructor, we compute the hints depending on the underlying TcSolverReportMsg. This disentangles the logic and makes it easier to add new hints for certain errors. - - - - - a05cdaf0 by Alexander Esgen at 2023-08-23T13:45:16-04:00 users-guide: remove note about fatal Haddock parse failures - - - - - 4908d798 by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Introduce Data.Enum - - - - - f59707c7 by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add export list to GHC.Num.Integer - - - - - b1054053 by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add export list to GHC.Num - - - - - 6baa481d by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add export list to GHC.Num.Natural - - - - - 2ac15233 by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add export list to GHC.Float - - - - - f3c489de by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add export list to GHC.Real - - - - - 94f59eaa by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Eliminate module reexport in GHC.Exception The metric increase here isn't strictly due to this commit but it's a rather small, incidental change. Metric Increase: T8095 T13386 Metric Decrease: T8095 T13386 T18304 - - - - - be1fc7df by Ben Gamari at 2023-08-23T17:36:41-04:00 base: Add disclaimers in internal modules To warn users that these modules are internal and their interfaces may change with little warning. As proposed in Core Libraries Committee #146 [CLC146]. [CLC146]: https://github.com/haskell/core-libraries-committee/issues/146 - - - - - 0326f3f4 by sheaf at 2023-08-23T17:37:29-04:00 Bump Cabal submodule We need to bump the Cabal submodule to include commit ec75950 which fixes an issue with a dodgy import Rep(..) which relied on GHC bug #23570 - - - - - 0504cd08 by Facundo Domínguez at 2023-08-23T17:38:11-04:00 Fix typos in the documentation of Data.OldList.permutations - - - - - 1420b8cb by Antoine Leblanc at 2023-08-24T16:18:17-04:00 Be more eager in TyCon boot validity checking This commit performs boot-file consistency checking for TyCons into checkValidTyCl. This ensures that we eagerly catch any mismatches, which prevents the compiler from seeing these inconsistencies and panicking as a result. See Note [TyCon boot consistency checking] in GHC.Tc.TyCl. Fixes #16127 - - - - - d99c816f by Finley McIlwaine at 2023-08-24T16:18:55-04:00 Refactor estimation of stack info table provenance This commit greatly refactors the way we compute estimated provenance for stack info tables. Previously, this process was done using an entirely separate traversal of the whole Cmm code stream to build the map from info tables to source locations. The separate traversal is now fused with the Cmm code generation pipeline in GHC.Driver.Main. This results in very significant code generation speed ups when -finfo-table-map is enabled. In testing, this patch reduces code generation times by almost 30% with -finfo-table-map and -O0, and 60% with -finfo-table-map and -O1 or -O2 . Fixes #23103 - - - - - d3e0124c by Finley McIlwaine at 2023-08-24T16:18:55-04:00 Add a test checking overhead of -finfo-table-map We want to make sure we don't end up with poor codegen performance resulting from -finfo-table-map again as in #23103. This test adds a performance test tracking total allocations while compiling ExactPrint with -finfo-table-map. - - - - - fcfc1777 by Ben Gamari at 2023-08-25T10:58:16-04:00 llvmGen: Add export list to GHC.Llvm.MetaData - - - - - 5880fff6 by Ben Gamari at 2023-08-25T10:58:16-04:00 llvmGen: Allow LlvmLits in MetaExprs This omission appears to be an oversight. - - - - - 86ce92a2 by Ben Gamari at 2023-08-25T10:58:16-04:00 compiler: Move platform feature predicates to GHC.Driver.DynFlags These are useful in `GHC.Driver.Config.*`. - - - - - a6a38742 by Ben Gamari at 2023-08-25T10:58:16-04:00 llvmGen: Introduce infrastructure for module flag metadata - - - - - e9af2cf3 by Ben Gamari at 2023-08-25T10:58:16-04:00 llvmGen: Don't pass stack alignment via command line As of https://reviews.llvm.org/D103048 LLVM no longer supports the `-stack-alignment=...` flag. Instead this information is passed via a module flag metadata node. This requires dropping support for LLVM 11 and 12. Fixes #23870 - - - - - a936f244 by Alan Zimmerman at 2023-08-25T10:58:56-04:00 EPA: Keep track of "in" token for WarningTxt category A warning can now be written with a category, e.g. {-# WARNInG in "x-c" e "d" #-} Keep track of the location of the 'in' keyword and string, as well as the original SourceText of the label, in case it uses character escapes. - - - - - 3df8a653 by Matthew Pickering at 2023-08-25T17:42:18-04:00 Remove redundant import in InfoTableProv The copyBytes function is provided by the import of Foreign. Fixes #23889 - - - - - d6f807ec by Ben Gamari at 2023-08-25T17:42:54-04:00 gitlab/issue-template: Mention report-a-bug - - - - - 50b9f75d by Artin Ghasivand at 2023-08-26T20:02:50+03:30 Added StandaloneKindSignature examples to replace CUSKs ones - - - - - 2f6309a4 by Vladislav Zavialov at 2023-08-27T03:47:37-04:00 Remove outdated CPP in compiler/* and template-haskell/* The boot compiler was bumped to 9.4 in cebb5819b43. There is no point supporting older GHC versions with CPP. - - - - - 5248fdf7 by Zubin Duggal at 2023-08-28T15:01:09+05:30 testsuite: Add regression test for #23861 Simon says this was fixed by commit 8d68685468d0b6e922332a3ee8c7541efbe46137 Author: sheaf <sam.derbyshire@gmail.com> Date: Fri Aug 4 15:28:45 2023 +0200 Remove zonk in tcVTA - - - - - b6903f4d by Zubin Duggal at 2023-08-28T12:33:58-04:00 testsuite: Add regression test for #23864 Simon says this was fixed by commit 59202c800f2c97c16906120ab2561f6e1556e4af Author: Sebastian Graf <sebastian.graf@kit.edu> Date: Fri Mar 31 17:35:22 2023 +0200 CorePrep: Eliminate EmptyCase and unsafeEqualityProof in CoreToStg instead We eliminate EmptyCase by way of `coreToStg (Case e _ _ []) = coreToStg e` now. The main reason is that it plays far better in conjunction with eta expansion (as we aim to do for arguments in CorePrep, #23083), because we can discard any arguments, `(case e of {}) eta == case e of {}`, whereas in `(e |> co) eta` it's impossible to discard the argument. - - - - - 9eecdf33 by sheaf at 2023-08-28T18:54:06+00:00 Remove ScopedTypeVariables => TypeAbstractions This commit implements [amendment 604](https://github.com/ghc-proposals/ghc-proposals/pull/604/) to [GHC proposal 448](https://github.com/ghc-proposals/ghc-proposals/pull/448) by removing the implication of language extensions ScopedTypeVariables => TypeAbstractions To limit breakage, we now allow type arguments in constructor patterns when both ScopedTypeVariables and TypeApplications are enabled, but we emit a warning notifying the user that this is deprecated behaviour that will go away starting in GHC 9.12. Fixes #23776 - - - - - fadd5b4d by sheaf at 2023-08-28T18:54:06+00:00 .stderr: ScopedTypeVariables =/> TypeAbstractions This commit accepts testsuite changes for the changes in the previous commit, which mean that TypeAbstractions is no longer implied by ScopedTypeVariables. - - - - - 4f5fb500 by Greg Steuck at 2023-08-29T07:55:13-04:00 Repair `codes` test on OpenBSD by explicitly requesting extended RE - - - - - 6bbde581 by Vasily Sterekhov at 2023-08-29T12:06:58-04:00 Add test for #23540 `T23540.hs` makes use of `explainEv` from `HieQueries.hs`, so `explainEv` has been moved to `TestUtils.hs`. - - - - - 257bb3bd by Vasily Sterekhov at 2023-08-29T12:06:58-04:00 Add test for #23120 - - - - - 4f192947 by Vasily Sterekhov at 2023-08-29T12:06:58-04:00 Make some evidence uses reachable by toHie Resolves #23540, #23120 This adds spans to certain expressions in the typechecker and renamer, and lets 'toHie' make use of those spans. Therefore the relevant evidence uses for the following syntax will now show up under the expected nodes in 'HieAst's: - Overloaded literals ('IsString', 'Num', 'Fractional') - Natural patterns and N+k patterns ('Eq', 'Ord', and instances from the overloaded literals being matched on) - Arithmetic sequences ('Enum') - Monadic bind statements ('Monad') - Monadic body statements ('Monad', 'Alternative') - ApplicativeDo ('Applicative', 'Functor') - Overloaded lists ('IsList') Also see Note [Source locations for implicit function calls] In the process of handling overloaded lists I added an extra 'SrcSpan' field to 'VAExpansion' - this allows us to more accurately reconstruct the locations from the renamer in 'rebuildHsApps'. This also happens to fix #23120. See the additions to Note [Looking through HsExpanded] - - - - - fe9fcf9d by Sylvain Henry at 2023-08-29T12:07:50-04:00 ghc-heap: rename C file (fix #23898) - - - - - b60d6576 by Krzysztof Gogolewski at 2023-08-29T12:08:29-04:00 Misc cleanup - Builtin.PrimOps: ReturnsAlg was used only for unboxed tuples. Rename to ReturnsTuple. - Builtin.Utils: use SDoc for a panic message. The comment about <<details unavailable>> was obsoleted by e8d356773b56. - TagCheck: fix wrong logic. It was zipping a list 'args' with its version 'args_cmm' after filtering. - Core.Type: remove an outdated 1999 comment about unlifted polymorphic types - hadrian: remove leftover debugging print - - - - - 3054fd6d by Krzysztof Gogolewski at 2023-08-29T12:09:08-04:00 Add a regression test for #23903 The bug has been fixed by commit bad2f8b8aa8424. - - - - - 21584b12 by Ben Gamari at 2023-08-29T19:52:02-04:00 README: Refer to ghc-hq repository for contributor and governance information - - - - - e542d590 by sheaf at 2023-08-29T19:52:40-04:00 Export setInertSet from GHC.Tc.Solver.Monad We used to export getTcSInerts and setTcSInerts from GHC.Tc.Solver.Monad. These got renamed to getInertSet/setInertSet in e1590ddc. That commit also removed the export of setInertSet, but that function is useful for the GHC API. - - - - - 694ec5b1 by sheaf at 2023-08-30T10:18:32-04:00 Don't bundle children for non-parent Avails We used to bundle all children of the parent Avail with things that aren't the parent, e.g. with class C a where type T a meth :: .. we would bundle the whole Avail (C, T, meth) with all of C, T and meth, instead of only with C. Avoiding this fixes #23570 - - - - - d926380d by Krzysztof Gogolewski at 2023-08-30T10:19:08-04:00 Fix typos - - - - - d07080d2 by Josh Meredith at 2023-08-30T19:42:32-04:00 JS: Implement missing C functions `rename`, `realpath`, and `getcwd` (#23806) - - - - - e2940272 by David Binder at 2023-08-30T19:43:08-04:00 Bump submodules of hpc and hpc-bin to version 0.7.0.0 hpc 0.7.0.0 dropped SafeHaskell safety guarantees in order to simplify compatibility with newer versions of the directory package which dropped all SafeHaskell guarantees. - - - - - 5d56d05c by David Binder at 2023-08-30T19:43:08-04:00 Bump hpc bound in ghc.cabal.in - - - - - 99fff496 by Dominik Schrempf at 2023-08-31T00:04:46-04:00 ghc classes documentation: rm redundant comment - - - - - fe021bab by Dominik Schrempf at 2023-08-31T00:04:46-04:00 prelude documentation: various nits - - - - - 48c84547 by Dominik Schrempf at 2023-08-31T00:04:46-04:00 integer documentation: minor corrections - - - - - 20cd12f4 by Dominik Schrempf at 2023-08-31T00:04:46-04:00 real documentation: nits - - - - - dd39bdc0 by sheaf at 2023-08-31T00:05:27-04:00 Add a test for #21765 This issue (of reporting a constraint as being redundant even though removing it causes typechecking to fail) was fixed in aed1974e. This commit simply adds a regression test. Fixes #21765 - - - - - f1ec3628 by Andrew Lelechenko at 2023-08-31T23:53:30-04:00 Export foldl' from Prelude and bump submodules See https://github.com/haskell/core-libraries-committee/issues/167 for discussion Metric Decrease: T8095 T13386 Metric Increase: T13386 T8095 T8095 ghc/alloc decreased on x86_64, but increased on aarch64. T13386 ghc/alloc decreased on x86_64-windows, but increased on other platforms. Neither has anything to do with `foldl'`, so I conclude that both are flaky. - - - - - 3181b97d by Gergő Érdi at 2023-08-31T23:54:06-04:00 Allow cross-tyvar defaulting proposals from plugins Fixes #23832. - - - - - e4af506e by Sebastian Graf at 2023-09-01T14:29:12-04:00 Clarify Note [GlobalId/LocalId] after CorePrep (#23797) Fixes #23797. - - - - - ac29787c by Sylvain Henry at 2023-09-01T14:30:02-04:00 Fix warning with UNPACK on sum type (#23921) - - - - - 9765ac7b by Zubin Duggal at 2023-09-05T00:37:45-04:00 hadrian: track python dependencies in doc rules - - - - - 1578215f by sheaf at 2023-09-05T00:38:26-04:00 Bump Haddock to fix #23616 This commit updates the Haddock submodule to include the fix to #23616. Fixes #23616 - - - - - 5a2fe35a by David Binder at 2023-09-05T00:39:07-04:00 Fix example in GHC user guide in SafeHaskell section The example given in the SafeHaskell section uses an implementation of Monad which no longer works. This MR removes the non-canonical return instance and adds the necessary instances of Functor and Applicative. - - - - - 291d81ae by Matthew Pickering at 2023-09-05T14:03:10-04:00 driver: Check transitive closure of haskell package dependencies when deciding whether to relink We were previously just checking whether direct package dependencies had been modified. This caused issues when compiling without optimisations as we wouldn't relink the direct dependency if one of its dependenices changed. Fixes #23724 - - - - - 35da0775 by Krzysztof Gogolewski at 2023-09-05T14:03:47-04:00 Re-export GHC.Utils.Panic.Plain from GHC.Utils.Panic Fixes #23930 - - - - - 3930d793 by Jaro Reinders at 2023-09-06T18:42:55-04:00 Make STG rewriter produce updatable closures - - - - - 0104221a by Krzysztof Gogolewski at 2023-09-06T18:43:32-04:00 configure: update message to use hadrian (#22616) - - - - - b34f8586 by Alan Zimmerman at 2023-09-07T10:58:38-04:00 EPA: Incorrect locations for UserTyVar with '@' In T13343.hs, the location for the @ is not within the span of the surrounding UserTyVar. type Bad @v = (forall (v1 :: RuntimeRep) (a1 :: TYPE v). a1) :: TYPE v Widen it so it is captured. Closes #23887 - - - - - 8046f020 by Finley McIlwaine at 2023-09-07T10:59:15-04:00 Bump haddock submodule to fix #23920 Removes the fake export of `FUN` from Prelude. Fixes #23920. Bumps haddock submodule. - - - - - e0aa8c6e by Krzysztof Gogolewski at 2023-09-07T11:00:03-04:00 Fix wrong role in mkSelCo_maybe In the Lint failure in #23938, we start with a coercion Refl :: T a ~R T a, and call mkSelCo (SelTyCon 1 nominal) Refl. The function incorrectly returned Refl :: a ~R a. The returned role should be nominal, according to the SelCo rule: co : (T s1..sn) ~r0 (T t1..tn) r = tyConRole tc r0 i ---------------------------------- SelCo (SelTyCon i r) : si ~r ti In this test case, r is nominal while r0 is representational. - - - - - 1d92f2df by Gergő Érdi at 2023-09-08T04:04:30-04:00 If we have multiple defaulting plugins, then we should zonk in between them after any defaulting has taken place, to avoid a defaulting plugin seeing a metavariable that has already been filled. Fixes #23821. - - - - - eaee4d29 by Gergő Érdi at 2023-09-08T04:04:30-04:00 Improvements to the documentation of defaulting plugins Based on @simonpj's draft and comments in !11117 - - - - - ede3df27 by Alan Zimmerman at 2023-09-08T04:05:06-04:00 EPA: Incorrect span for LWarnDec GhcPs The code (from T23465.hs) {-# WARNInG in "x-c" e "d" #-} e = e gives an incorrect span for the LWarnDecl GhcPs Closes #23892 It also fixes the Test23465/Test23464 mixup - - - - - a0ccef7a by Krzysztof Gogolewski at 2023-09-08T04:05:42-04:00 Valid hole fits: don't suggest unsafeCoerce (#17940) - - - - - 88b942c4 by Oleg Grenrus at 2023-09-08T19:58:42-04:00 Add warning for badly staged types. Resolves #23829. The stage violation results in out-of-bound names in splices. Technically this is an error, but someone might rely on this!? Internal changes: - we now track stages for TyVars. - thLevel (RunSplice _) = 0, instead of panic, as reifyInstances does in fact rename its argument type, and it can contain variables. - - - - - 9861f787 by Ben Gamari at 2023-09-08T19:59:19-04:00 rts: Fix invalid symbol type I suspect this code is dead since we haven't observed this failing despite the obviously incorrect macro name. - - - - - 03ed6a9a by Ben Gamari at 2023-09-08T19:59:19-04:00 testsuite: Add simple test exercising C11 atomics in GHCi See #22012. - - - - - 1aa5733a by Ben Gamari at 2023-09-08T19:59:19-04:00 rts/RtsSymbols: Add AArch64 outline atomic operations Fixes #22012 by adding the symbols described in https://github.com/llvm/llvm-project/blob/main/llvm/docs/Atomics.rst#libcall.... Ultimately this would be better addressed by #22011, but this is a first step in the right direction and fixes the immediate symptom. Note that we dropped the `__arch64_cas16` operations as these provided by all platforms's compilers. Also, we don't link directly against the libgcc/compiler-rt definitions but rather provide our own wrappers to work around broken toolchains (e.g. https://bugs.gentoo.org/868018). Generated via https://gitlab.haskell.org/ghc/ghc/-/snippets/5733. - - - - - 8f7d3041 by Matthew Pickering at 2023-09-08T19:59:55-04:00 ci: Build debian12 and fedora38 bindists This adds builds for the latest releases for fedora and debian We build these bindists in nightly and release pipelines. - - - - - a1f0d55c by Felix Leitz at 2023-09-08T20:00:37-04:00 Fix documentation around extension implication for MultiParamTypeClasses/ConstrainedClassMethods. - - - - - 98166389 by Teo Camarasu at 2023-09-12T04:30:54-04:00 docs: move -xn flag beside --nonmoving-gc It makes sense to have these beside each other as they are aliases. - - - - - f367835c by Teo Camarasu at 2023-09-12T04:30:55-04:00 nonmoving: introduce a family of dense allocators Supplement the existing power 2 sized nonmoving allocators with a family of dense allocators up to a configurable threshold. This should reduce waste from rounding up block sizes while keeping the amount of allocator sizes manageable. This patch: - Adds a new configuration option `--nonmoving-dense-allocator-count` to control the amount of these new dense allocators. - Adds some constants to `NonmovingAllocator` in order to keep marking fast with the new allocators. Resolves #23340 - - - - - 2b07bf2e by Teo Camarasu at 2023-09-12T04:30:55-04:00 Add changelog entry for #23340 - - - - - f96fe681 by sheaf at 2023-09-12T04:31:44-04:00 Use printGhciException in run{Stmt, Decls} When evaluating statements in GHCi, we need to use printGhciException instead of the printException function that GHC provides in order to get the appropriate error messages that are customised for ghci use. - - - - - d09b932b by psilospore at 2023-09-12T04:31:44-04:00 T23686: Suggest how to enable Language Extension when in ghci Fixes #23686 - - - - - da30f0be by Matthew Craven at 2023-09-12T04:32:24-04:00 Unarise: Split Rubbish literals in function args Fixes #23914. Also adds a check to STG lint that these args are properly unary or nullary after unarisation - - - - - 261b6747 by Matthew Pickering at 2023-09-12T04:33:04-04:00 darwin: Bump MAXOSX_DEPLOYMENT_TARGET to 10.13 This bumps the minumum supported version to 10.13 (High Sierra) which is 6 years old at this point. Fixes #22938 - - - - - f418f919 by Mario Blažević at 2023-09-12T04:33:45-04:00 Fix TH pretty-printing of nested GADTs, issue #23937 This commit fixes `Language.Haskell.TH.Ppr.pprint` so that it correctly pretty-prints GADTs declarations contained within data family instances. Fixes #23937 - - - - - d7a64753 by John Ericson at 2023-09-12T04:34:20-04:00 Put hadrian non-bootstrap plans through `jq` This makes it possible to review changes with conventional diffing tools. This is picking up where ad8cfed4195b1bbfc15b841f010e75e71f63157d left off. - - - - - ff0a709a by Sylvain Henry at 2023-09-12T08:46:28-04:00 JS: fix some tests - Tests using Setup programs need to pass --with-hc-pkg - Several other fixes See https://gitlab.haskell.org/ghc/ghc/-/wikis/javascript-backend/bug_triage for the current status - - - - - fc86f0e7 by Krzysztof Gogolewski at 2023-09-12T08:47:04-04:00 Fix in-scope set assertion failure (#23918) Patch by Simon - - - - - 21a906c2 by Matthew Pickering at 2023-09-12T17:21:04+02:00 Add -Winconsistent-flags warning The warning fires when inconsistent command line flags are passed. For example: * -dynamic-too and -dynamic * -dynamic-too on windows * -O and --interactive * etc This is on by default and allows users to control whether the warning is displayed and whether it should be an error or not. Fixes #22572 - - - - - dfc4f426 by Krzysztof Gogolewski at 2023-09-12T20:31:35-04:00 Avoid serializing BCOs with the internal interpreter Refs #23919 - - - - - 9217950b by Finley McIlwaine at 2023-09-13T08:06:03-04:00 Fix numa auto configure - - - - - 98e7c1cf by Simon Peyton Jones at 2023-09-13T08:06:40-04:00 Add -fno-cse to T15426 and T18964 This -fno-cse change is to avoid these performance tests depending on flukey CSE stuff. Each contains several independent tests, and we don't want them to interact. See #23925. By killing CSE we expect a 400% increase in T15426, and 100% in T18964. Metric Increase: T15426 T18964 - - - - - 236a134e by Simon Peyton Jones at 2023-09-13T08:06:40-04:00 Tiny refactor canEtaReduceToArity was only called internally, and always with two arguments equal to zero. This patch just specialises the function, and renames it to cantEtaReduceFun. No change in behaviour. - - - - - 56b403c9 by Ben Gamari at 2023-09-13T19:21:36-04:00 spec-constr: Lift argument limit for SPEC-marked functions When the user adds a SPEC argument to a function, they are informing us that they expect the function to be specialised. However, previously this instruction could be preempted by the specialised-argument limit (sc_max_args). Fix this. This fixes #14003. - - - - - 6840012e by Simon Peyton Jones at 2023-09-13T19:22:13-04:00 Fix eta reduction Issue #23922 showed that GHC was bogusly eta-reducing a join point. We should never eta-reduce (\x -> j x) to j, if j is a join point. It is extremly difficult to trigger this bug. It took me 45 mins of trying to make a small tests case, here immortalised as T23922a. - - - - - e5c00092 by Andreas Klebinger at 2023-09-14T08:57:43-04:00 Profiling: Properly escape characters when using `-pj`. There are some ways in which unusual characters like quotes or others can make it into cost centre names. So properly escape these. Fixes #23924 - - - - - ec490578 by Ellie Hermaszewska at 2023-09-14T08:58:24-04:00 Use clearer example variable names for bool eliminator - - - - - 5126a2fe by Sylvain Henry at 2023-09-15T11:18:02-04:00 Add missing int64/word64-to-double/float rules (#23907) CLC proposal: https://github.com/haskell/core-libraries-committee/issues/203 - - - - - 566ef411 by Mario Blažević at 2023-09-15T11:18:43-04:00 Fix and test TH pretty-printing of type operator role declarations This commit fixes and tests `Language.Haskell.TH.Ppr.pprint` so that it correctly pretty-prints `type role` declarations for operator names. Fixes #23954 - - - - - 8e05c54a by Simon Peyton Jones at 2023-09-16T01:42:33-04:00 Use correct FunTyFlag in adjustJoinPointType As the Lint error in #23952 showed, the function adjustJoinPointType was failing to adjust the FunTyFlag when adjusting the type. I don't think this caused the seg-fault reported in the ticket, but it is definitely. This patch fixes it. It is tricky to come up a small test case; Krzysztof came up with this one, but it only triggers a failure in GHC 9.6. - - - - - 778c84b6 by Pierre Le Marre at 2023-09-16T01:43:15-04:00 Update to Unicode 15.1.0 See: https://www.unicode.org/versions/Unicode15.1.0/ - - - - - f9d79a6c by Alan Zimmerman at 2023-09-18T00:00:14-04:00 EPA: track unicode version for unrestrictedFunTyCon Closes #23885 Updates haddock submodule - - - - - 9374f116 by Andrew Lelechenko at 2023-09-18T00:00:54-04:00 Bump parsec submodule to allow text-2.1 and bytestring-0.12 - - - - - 7ca0240e by Ben Gamari at 2023-09-18T15:16:48-04:00 base: Advertise linear time of readFloat As noted in #23538, `readFloat` has runtime that scales nonlinearly in the size of its input. Consequently, its use on untrusted input can be exploited as a denial-of-service vector. Point this out and suggest use of `read` instead. See #23538. - - - - - f3f58f13 by Simon Peyton Jones at 2023-09-18T15:17:24-04:00 Remove dead code GHC.CoreToStg.Prep.canFloat This function never fires, so we can delete it: #23965. - - - - - ccab5b15 by Ben Gamari at 2023-09-18T15:18:02-04:00 base/changelog: Move fix for #23907 to 9.8.1 section Since the fix was backported to 9.8.1 - - - - - 51b57d65 by Matthew Pickering at 2023-09-19T08:44:31-04:00 Add aarch64 alpine bindist This is dynamically linked and makes creating statically linked executables more straightforward. Fixes #23482 - - - - - 02c87213 by Matthew Pickering at 2023-09-19T08:44:31-04:00 Add aarch64-deb11 bindist This adds a debian 11 release job for aarch64. Fixes #22005 - - - - - 8b61dfd6 by Alexis King at 2023-09-19T08:45:13-04:00 Don’t store the async exception masking state in CATCH frames - - - - - 86d2971e by doyougnu at 2023-09-19T19:08:19-04:00 compiler,ghci: error codes link to HF error index closes: #23259 - adds -fprint-error-index-links={auto|always|never} flag - - - - - 5f826c18 by sheaf at 2023-09-19T19:09:03-04:00 Pass quantified tyvars in tcDefaultAssocDecl This commit passes the correct set of quantified type variables written by the user in associated type default declarations for validity checking. This ensures that validity checking of associated type defaults mirrors that of standalone type family instances. Fixes #23768 (see testcase T23734 in subsequent commit) - - - - - aba18424 by sheaf at 2023-09-19T19:09:03-04:00 Avoid panic in mkGADTVars This commit avoids panicking in mkGADTVars when we encounter a type variable as in #23784 that is bound by a user-written forall but not actually used. Fixes #23784 - - - - - a525a92a by sheaf at 2023-09-19T19:09:03-04:00 Adjust reporting of unused tyvars in data FamInsts This commit adjusts the validity checking of data family instances to improve the reporting of unused type variables. See Note [Out of scope tvs in data family instances] in GHC.Tc.Validity. The problem was that, in a situation such as data family D :: Type data instance forall (d :: Type). D = MkD the RHS passed to 'checkFamPatBinders' would be the TyCon app R:D d which mentions the type variable 'd' quantified in the user-written forall. Thus, when computing the set of unused type variables in the RHS of the data family instance, we would find that 'd' is used, and report a strange error message that would say that 'd' is not bound on the LHS. To fix this, we special-case the data-family instance case, manually extracting all the type variables that appear in the arguments of all the data constructores of the data family instance. Fixes #23778 - - - - - 28dd52ee by sheaf at 2023-09-19T19:09:03-04:00 Unused tyvars in FamInst: only report user tyvars This commit changes how we perform some validity checking for coercion axioms to mirror how we handle default declarations for associated type families. This allows us to keep track of whether type variables in type and data family instances were user-written or not, in order to only report the user-written ones in "unused type variable" error messages. Consider for example: {-# LANGUAGE PolyKinds #-} type family F type instance forall a. F = () In this case, we get two quantified type variables, (k :: Type) and (a :: k); the second being user-written, but the first is introduced by the typechecker. We should only report 'a' as being unused, as the user has no idea what 'k' is. Fixes #23734 - - - - - 1eed645c by sheaf at 2023-09-19T19:09:03-04:00 Validity: refactor treatment of data families This commit refactors the reporting of unused type variables in type and data family instances to be more principled. This avoids ad-hoc logic in the treatment of data family instances. - - - - - 35bc506b by John Ericson at 2023-09-19T19:09:40-04:00 Remove `ghc-cabal` It is dead code since the Make build system was removed. I tried to go over every match of `git grep -i ghc-cabal` to find other stray bits. Some of those might be workarounds that can be further removed. - - - - - 665ca116 by John Paul Adrian Glaubitz at 2023-09-19T19:10:39-04:00 Re-add unregisterised build support for sparc and sparc64 Closes #23959 - - - - - 142f8740 by Matthew Pickering at 2023-09-19T19:11:16-04:00 Bump ci-images to use updated version of Alex Fixes #23977 - - - - - fa977034 by John Ericson at 2023-09-21T12:55:25-04:00 Use Cabal 3.10 for Hadrian We need the newer version for `CABAL_FLAG_*` env vars for #17191. - - - - - a5d22cab by John Ericson at 2023-09-21T12:55:25-04:00 hadrian: `need` any `configure` script we will call When the script is changed, we should reconfigure. - - - - - db882b57 by John Ericson at 2023-09-21T12:55:25-04:00 hadrian: Make it easier to debug Cabal configure Right now, output is squashed. This make per-package configure scripts extremely hard to maintain, because we get vague "library is missing" errors when the actually probably is usually completely unrelated except for also involving the C/C++ toolchain. (I can always pass `-VVV` to Hadrian locally, but these errors are subtle and I often cannot reproduce them locally!) `--disable-option-checking` was added back in 75c6e0684dda585c37b4ac254cd7a13537a59a91 but seems to be a bit overkill; if other flags are passed that are not recognized behind the two from Cabal mentioned in the former comment, we *do* want to know about it. - - - - - 7ed65f5a by John Ericson at 2023-09-21T12:55:25-04:00 hadrian: Increase verbosity of certain cabal commands This is a hack to get around the cabal function we're calling *decreasing* the verbosity it passes to another function, which is the stuff we often actually care about. Sigh. Keeping this a separate commit so if this makes things too verbose it is easy to revert. - - - - - a4fde569 by John Ericson at 2023-09-21T12:55:25-04:00 rts: Move most external symbols logic to the configure script This is much more terse because we are programmatically handling the leading underscore. `findPtr` however is still handled in the Cabal file because we need a newer Cabal to pass flags to the configure script automatically. Co-Authored-By: Ben Gamari <ben@well-typed.com> - - - - - 56cc85fb by Andrew Lelechenko at 2023-09-21T12:56:21-04:00 Bump Cabal submodule to allow text-2.1 and bytestring-0.12 - - - - - 0cd6148c by Matthew Pickering at 2023-09-21T12:56:21-04:00 hadrian: Generate Distribution/Fields/Lexer.x before creating a source-dist - - - - - b10ba6a3 by Andrew Lelechenko at 2023-09-21T12:56:21-04:00 Bump hadrian's index-state to upgrade alex at least to 3.2.7.3 - - - - - 11ecc37b by Luite Stegeman at 2023-09-21T12:57:03-04:00 JS: correct file size and times Programs produced by the JavaScript backend were returning incorrect file sizes and modification times, causing cabal related tests to fail. This fixes the problem and adds an additional test that verifies basic file information operations. fixes #23980 - - - - - b35fd2cd by Ben Gamari at 2023-09-21T12:57:39-04:00 gitlab-ci: Drop libiserv from upload_ghc_libs libiserv has been merged into the ghci package. - - - - - 37ad04e8 by Ben Gamari at 2023-09-21T12:58:15-04:00 testsuite: Fix Windows line endings - - - - - 5795b365 by Ben Gamari at 2023-09-21T12:58:15-04:00 testsuite: Use makefile_test - - - - - 15118740 by Ben Gamari at 2023-09-21T12:58:55-04:00 system-cxx-std-lib: Add license and description - - - - - 0208f1d5 by Ben Gamari at 2023-09-21T12:59:33-04:00 gitlab/issue-templates: Rename bug.md -> default.md So that it is visible by default. - - - - - 23cc3f21 by Andrew Lelechenko at 2023-09-21T20:18:11+01:00 Bump submodule text to 2.1 - - - - - b8e4fe23 by Andrew Lelechenko at 2023-09-22T20:05:05-04:00 Bump submodule unix to 2.8.2.1 - - - - - 54b2016e by John Ericson at 2023-09-23T11:40:41-04:00 Move lib{numa,dw} defines to RTS configure Clean up the m4 to handle the auto case always and be more consistent. Also simplify the CPP --- we should always have both headers if we are using libnuma. "side effects" (AC_DEFINE, and AC_SUBST) are removed from the macros to better separate searching from actions taken based on search results. This might seem overkill now, but will make shuffling logic between configure scripts easier later. The macro comments are converted from `dnl` to `#` following the recomendation in https://www.gnu.org/software/autoconf/manual/autoconf-2.71/html_node/Macro-D... - - - - - d51b601b by John Ericson at 2023-09-23T11:40:50-04:00 Shuffle libzstd configuring between scripts Like the prior commit for libdw and libnuma, `AC_DEFINE` to RTS configure, `AC_SUBST` goes to the top-level configure script, and the documentation of the m4 macro is improved. - - - - - d1425af0 by John Ericson at 2023-09-23T11:41:03-04:00 Move `FP_ARM_OUTLINE_ATOMICS` to RTS configure It is just `AC_DEFINE` it belongs there instead. - - - - - 18de37e4 by John Ericson at 2023-09-23T11:41:03-04:00 Move mmap in the runtime linker check to the RTS configure `AC_DEFINE` should go there instead. - - - - - 74132c2b by Andrew Lelechenko at 2023-09-25T21:56:54-04:00 Elaborate comment on GHC_NO_UNICODE - - - - - de142aa2 by Ben Gamari at 2023-09-26T15:25:03-04:00 gitlab-ci: Mark T22012 as broken on CentOS 7 Due to #23979. - - - - - 6a896ce8 by Teo Camarasu at 2023-09-26T15:25:39-04:00 hadrian: better error for failing to find file's dependencies Resolves #24004 - - - - - d697a6c2 by Stefan Holdermans at 2023-09-26T20:58:37+00:00 Refactor uses of `partitionEithers . map` This patch changes occurences of the idiom `partitionEithers (map f xs)` by the simpler form `partitionWith f xs` where `partitionWith` is the utility function defined in `GHC.Utils.Misc`. Resolves: #23953 - - - - - 8a2968b7 by Stefan Holdermans at 2023-09-26T20:58:37+00:00 Refactor uses of `partitionEithers <$> mapM f xs` This patch changes occurences of the idiom `partitionEithers <$> mapM f xs` by the simpler form `partitionWithM f xs` where `partitionWithM` is a utility function newly added to `GHC.Utils.Misc`. - - - - - 6a27eb97 by Stefan Holdermans at 2023-09-26T20:58:37+00:00 Mark `GHC.Utils.Misc.partitionWithM` as inlineable This patch adds an `INLINEABLE` pragma for `partitionWithM` to ensure that the right-hand side of the definition of this function remains available for specialisation at call sites. - - - - - f1e5245a by David Binder at 2023-09-27T01:19:00-04:00 Add RTS option to supress tix file - - - - - 1f43124f by David Binder at 2023-09-27T01:19:00-04:00 Add expected output to testsuite in test interface-stability/base-exports - - - - - b9d2c354 by David Binder at 2023-09-27T01:19:00-04:00 Expose HpcFlags and getHpcFlags from GHC.RTS.Flags - - - - - 345675c6 by David Binder at 2023-09-27T01:19:00-04:00 Fix expected output of interface-stability test - - - - - 146e1c39 by David Binder at 2023-09-27T01:19:00-04:00 Implement getHpcFlags - - - - - 61ba8e20 by David Binder at 2023-09-27T01:19:00-04:00 Add section in user guide - - - - - ea05f890 by David Binder at 2023-09-27T01:19:01-04:00 Rename --emit-tix-file to --write-tix-file - - - - - cabce2ce by David Binder at 2023-09-27T01:19:01-04:00 Update the golden files for interface stability - - - - - 1dbdb9d0 by Krzysztof Gogolewski at 2023-09-27T01:19:37-04:00 Refactor: introduce stgArgRep The function 'stgArgType' returns the type in STG. But this violates the abstraction: in STG we're supposed to operate on PrimReps. This introduces stgArgRep ty = typePrimRep (stgArgType ty) stgArgRep1 ty = typePrimRep1 (stgArgType ty) stgArgRep_maybe ty = typePrimRep_maybe (stgArgType ty) stgArgType is still directly used for unboxed tuples (should be fixable), FFI and in ticky. - - - - - b02f8042 by Mario Blažević at 2023-09-27T17:33:28-04:00 Fix TH pretty-printer's parenthesization This PR Fixes `Language.Haskell.TH.Ppr.pprint` so it correctly emits parentheses where needed. Fixes #23962, #23968, #23971, and #23986 - - - - - 79104334 by Krzysztof Gogolewski at 2023-09-27T17:34:04-04:00 Add a testcase for #17564 The code in the ticket relied on the behaviour of Derived constraints. Derived constraints were removed in GHC 9.4 and now the code works as expected. - - - - - d7a80143 by sheaf at 2023-09-28T03:25:53-04:00 lint-codes: add new modes of operation This commit adds two new modes of operation to the lint-codes utility: list - list all statically used diagnostic codes outdated - list all outdated diagnostic codes The previous behaviour is now: test - test consistency and coverage of diagnostic codes - - - - - 477d223c by sheaf at 2023-09-28T03:25:53-04:00 lint codes: avoid using git-grep We manually traverse through the filesystem to find the diagnostic codes embedded in .stdout and .stderr files, to avoid any issues with old versions of grep. Fixes #23843 - - - - - a38ae69a by sheaf at 2023-09-28T03:25:53-04:00 lint-codes: add Hadrian targets This commit adds new Hadrian targets: codes, codes:used - list all used diagnostic codes codes:outdated - list outdated diagnostic codes This allows users to easily query GHC for used and outdated diagnostic codes, e.g. hadrian/build -j --flavour=<..> codes will list all used diagnostic codes in the command line by running the lint-codes utility in the "list codes" mode of operation. The diagnostic code consistency and coverage test is still run as usual, through the testsuite: hadrian/build test --only="codes" - - - - - 9cdd629b by Ben Gamari at 2023-09-28T03:26:29-04:00 hadrian: Install LICENSE files in bindists Fixes #23548. - - - - - b8ebf876 by Matthew Craven at 2023-09-28T03:27:05-04:00 Fix visibility when eta-reducing a type lambda Fixes #24014. - - - - - d3874407 by Torsten Schmits at 2023-09-30T16:08:10-04:00 Fix several mistakes around free variables in iface breakpoints Fixes #23612 , #23607, #23998 and #23666. MR: !11026 The fingerprinting logic in `Iface.Recomp` failed lookups when processing decls containing breakpoints for two reasons: * IfaceBreakpoint created binders for free variables instead of expressions * When collecting free names for the dependency analysis for fingerprinting, breakpoint FVs were skipped - - - - - ef5342cd by Simon Peyton Jones at 2023-09-30T16:08:48-04:00 Refactor to combine HsLam and HsLamCase This MR is pure refactoring (#23916): * Combine `HsLam` and `HsLamCase` * Combine `HsCmdLam` and `HsCmdLamCase` This just arranges to treat uniformly \x -> e \case pi -> ei \cases pis -> ie In the exising code base the first is treated differently to the latter two. No change in behaviour. More specifics: * Combine `HsLam` and `HsLamCase` (constructors of `Language.Haskell.Syntax.Expr.HsExpr`) into one data construtor covering * Lambda * `\case` * `\cases` * The new `HsLam` has an argument of type `HsLamVariant` to distinguish the three cases. * Similarly, combine `HsCmdLam` and `HsCmdLamCase` (constructors of `Language.Haskell.Syntax.Expr.HsCmd` ) into one. * Similarly, combine `mkHsLamPV` and `mkHsLamCasePV` (methods of class `DisambECP`) into one. (Thank you Alan Zimmerman.) * Similarly, combine `LambdaExpr` and `LamCaseAlt` (constructors of `Language.Haskell.Syntax.Expr.HsMatchContext`) into one: `LamAlt` with a `HsLamVariant` argument. * Similarly, combine `KappaExpr` and `ArrowLamCaseAlt` (constructors of `Language.Haskell.Syntax.Expr.HsArrowMatchContext`) into one: `ArrowLamAlt` with a `HsLamVariant` argument. * Similarly, combine `PsErrLambdaInPat` and `PsErrLambdaCaseInPat` (constructors of `GHC.Parser.Errors.Ppr.PsError`) into one. * Similarly, combine `PsErrLambdaInPat` and `PsErrLambdaCaseInPat` (constructors of `GHC.Parser.Errors.Ppr.PsError`) into one. * In the same `PsError` data type, combine `PsErrLambdaCmdInFunAppCmd` and `PsErrLambdaCaseCmdInFunAppCmd` into one. * In the same `PsError` data tpye, combine `PsErrLambdaInFunAppExpr` and `PsErrLambdaCaseInFunAppExpr` into one. p* Smilarly combine `ExpectedFunTyLam` and `ExpectedFunTyLamCase` (constructors of `GHC.Tc.Types.Origin.ExpectedFunTyOrigin`) into one. Phew! - - - - - b048bea0 by Andreas Klebinger at 2023-09-30T16:09:24-04:00 Arm: Make ppr methods easier to use by not requiring NCGConfig - - - - - 2adc0508 by Andreas Klebinger at 2023-09-30T16:09:24-04:00 AArch64: Fix broken conditional jumps for offsets >= 1MB Rewrite conditional jump instructions with offsets >= 1MB to use unconditional jumps to avoid overflowing the immediate. Fixes #23746 - - - - - 1424f790 by Alan Zimmerman at 2023-09-30T16:10:00-04:00 EPA: Replace Monoid with NoAnn We currently use the Monoid class as a constraint on Exact Print Annotation functions, so we can use mempty. But this leads to requiring Semigroup instances too, which do not always make sense. Instead, introduce a class NoAnn, with a function noAnn analogous to mempty. Closes #20372 Updates haddock submodule - - - - - c1a3ecde by Ben Gamari at 2023-09-30T16:10:36-04:00 users-guide: Refactor handling of :base-ref: et al. - - - - - bc204783 by Richard Eisenberg at 2023-10-02T14:50:52+02:00 Simplify and correct nasty case in coercion opt This fixes #21062. No test case, because triggering this code seems challenging. - - - - - 9c9ca67e by Andrew Lelechenko at 2023-10-04T05:42:28-04:00 Bump bytestring submodule to 0.12.0.2 - - - - - 4e46dc2b by Andrew Lelechenko at 2023-10-04T05:42:28-04:00 Inline bucket_match - - - - - f6b2751f by Ben Gamari at 2023-10-04T05:43:05-04:00 configure: Fix #21712 again This is a bit of a shot in the dark to fix #24033, which appears to be another instance of #21712. For some reason the ld-override logic *still* appears to be active on Darwin targets (or at least one). Consequently, on misconfigured systems we may choose a non-`ld64` linker. It's a bit unclear exactly what happened in #24033 but ultimately the check added for #21712 was not quite right, checking for the `ghc_host_os` (the value of which depends upon the bootstrap compiler) instead of the target platform. Fix this. Fixes #24033. - - - - - 2f0a101d by Krzysztof Gogolewski at 2023-10-04T05:43:42-04:00 Add a regression test for #24029 - - - - - 8cee3fd7 by sheaf at 2023-10-04T05:44:22-04:00 Fix non-symbolic children lookup of fixity decl The fix for #23664 did not correctly account for non-symbolic names when looking up children of a given parent. This one-line fix changes that. Fixes #24037 - - - - - a4785b33 by Cheng Shao at 2023-10-04T05:44:59-04:00 rts: fix incorrect ticket reference - - - - - e037f459 by Ben Gamari at 2023-10-04T05:45:35-04:00 users-guide: Fix discussion of -Wpartial-fields * fix a few typos * add a new example showing when the warning fires * clarify the existing example * point out -Wincomplete-record-selects Fixes #24049. - - - - - 8ff3134e by Matthew Pickering at 2023-10-05T05:34:58-04:00 Revert "Pass preprocessor options to C compiler when building foreign C files (#16737)" This reverts commit 1c18d3b41f897f34a93669edaebe6069f319f9e2. `-optP` should pass options to the preprocessor, that might be a very different program to the C compiler, so passing the options to the C compiler is likely to result in `-optP` being useless. Fixes #17185 and #21291 - - - - - 8f6010b9 by Ben Gamari at 2023-10-05T05:35:36-04:00 rts/nonmoving: Fix on LLP64 platforms Previously `NONMOVING_SEGMENT_MASK` and friends were defined with the `UL` size suffix. However, this is wrong on LLP64 platforms like Windows, where `long` is 32-bits. Fixes #23003. Fixes #24042. - - - - - f20d02f8 by Andreas Klebinger at 2023-10-05T05:36:14-04:00 Fix isAArch64Bitmask for 32bit immediates. Fixes #23802 - - - - - 63afb701 by Bryan Richter at 2023-10-05T05:36:49-04:00 Work around perf note fetch failure Addresses #24055. - - - - - 242102f4 by Krzysztof Gogolewski at 2023-10-05T05:37:26-04:00 Add a test for #21348 - - - - - 7d390bce by Rewbert at 2023-10-05T05:38:08-04:00 Fixes #24046 - - - - - 032ba96d by Simon Peyton Jones at 2023-10-05T13:05:26+01:00 Improve the Lint checking for empty cases - - - - - 477c4921 by Simon Peyton Jones at 2023-10-05T13:06:54+01:00 Wibble - - - - - 06080bb0 by Simon Peyton Jones at 2023-10-05T13:06:54+01:00 Add missing import to T22439 - - - - - 4520 changed files: - .gitignore - .gitlab-ci.yml - .gitlab/ci.sh - − .gitlab/circle-ci-job.sh - .gitlab/darwin/nix/sources.json - .gitlab/darwin/toolchain.nix - + .gitlab/generate-ci/LICENSE - + .gitlab/generate-ci/README.mkd - + .gitlab/generate-ci/flake.lock - + .gitlab/generate-ci/flake.nix - .gitlab/gen_ci.hs → .gitlab/generate-ci/gen_ci.hs - + .gitlab/generate-ci/generate-ci.cabal - + .gitlab/generate-ci/generate-job-metadata - + .gitlab/generate-ci/generate-jobs - + .gitlab/generate-ci/hie.yaml - − .gitlab/generate_jobs - .gitlab/hello.hs - .gitlab/issue_templates/bug.md → .gitlab/issue_templates/default.md - .gitlab/jobs.yaml - .gitlab/merge_request_templates/merge-request.md → .gitlab/merge_request_templates/Default.md - − .gitlab/merge_request_templates/backport-for-8.8.md - + .gitlab/rel_eng/default.nix - + .gitlab/rel_eng/fetch-gitlab-artifacts/.gitignore - + .gitlab/rel_eng/fetch-gitlab-artifacts/README.mkd - + .gitlab/rel_eng/fetch-gitlab-artifacts/default.nix - + .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py - + .gitlab/rel_eng/fetch-gitlab-artifacts/setup.py - + .gitlab/rel_eng/mk-ghcup-metadata/.gitignore - + .gitlab/rel_eng/mk-ghcup-metadata/README.mkd - + .gitlab/rel_eng/mk-ghcup-metadata/default.nix - + .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - + .gitlab/rel_eng/mk-ghcup-metadata/setup.py - + .gitlab/rel_eng/nix/sources.json - + .gitlab/rel_eng/nix/sources.nix - + .gitlab/rel_eng/upload.sh - .gitlab/upload_ghc_libs.py → .gitlab/rel_eng/upload_ghc_libs.py - .gitlab/test-metrics.sh - .gitmodules - CODEOWNERS - HACKING.md - INSTALL.md - README.md - boot - cabal.project-reinstall - compile_flags.txt - compiler/CodeGen.Platform.h - compiler/GHC.hs - compiler/GHC/Builtin/Names.hs - compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Builtin/PrimOps.hs - + compiler/GHC/Builtin/PrimOps/Casts.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - compiler/GHC/Builtin/Types.hs - compiler/GHC/Builtin/Types.hs-boot - compiler/GHC/Builtin/Types/Literals.hs - compiler/GHC/Builtin/Types/Prim.hs - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Builtin/Uniques.hs-boot - compiler/GHC/Builtin/Utils.hs - − compiler/GHC/Builtin/bytearray-ops.txt.pp - 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.hs - compiler/GHC/Cmm/CLabel.hs - compiler/GHC/Cmm/CallConv.hs - compiler/GHC/Cmm/CommonBlockElim.hs - compiler/GHC/Cmm/Config.hs - compiler/GHC/Cmm/ContFlowOpt.hs - compiler/GHC/Cmm/Dataflow/Block.hs - compiler/GHC/Cmm/Dataflow/Collections.hs - compiler/GHC/Cmm/Dataflow/Label.hs - compiler/GHC/Cmm/DebugBlock.hs - compiler/GHC/Cmm/Dominators.hs - compiler/GHC/Cmm/Expr.hs - compiler/GHC/Cmm/Graph.hs - compiler/GHC/Cmm/Info.hs - compiler/GHC/Cmm/Info/Build.hs - compiler/GHC/Cmm/LRegSet.hs - compiler/GHC/Cmm/LayoutStack.hs - compiler/GHC/Cmm/Lexer.x - compiler/GHC/Cmm/Lint.hs - compiler/GHC/Cmm/MachOp.hs - compiler/GHC/Cmm/Node.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/Type.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/CmmToAsm.hs - compiler/GHC/CmmToAsm/AArch64.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.hs - compiler/GHC/CmmToAsm/AArch64/Cond.hs - compiler/GHC/CmmToAsm/AArch64/Instr.hs - compiler/GHC/CmmToAsm/AArch64/Ppr.hs - compiler/GHC/CmmToAsm/BlockLayout.hs - compiler/GHC/CmmToAsm/CFG.hs - compiler/GHC/CmmToAsm/CFG/Dominators.hs - compiler/GHC/CmmToAsm/Dwarf.hs - compiler/GHC/CmmToAsm/Dwarf/Types.hs - compiler/GHC/CmmToAsm/Monad.hs - compiler/GHC/CmmToAsm/PIC.hs - compiler/GHC/CmmToAsm/PPC/CodeGen.hs - compiler/GHC/CmmToAsm/PPC/Instr.hs - compiler/GHC/CmmToAsm/PPC/Ppr.hs - compiler/GHC/CmmToAsm/Ppr.hs - compiler/GHC/CmmToAsm/Reg/Graph.hs - compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs - compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs - compiler/GHC/CmmToAsm/Reg/Linear.hs - compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs - compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs - compiler/GHC/CmmToAsm/Reg/Liveness.hs - compiler/GHC/CmmToAsm/Reg/Target.hs - compiler/GHC/CmmToAsm/Wasm.hs - compiler/GHC/CmmToAsm/Wasm/Asm.hs - compiler/GHC/CmmToAsm/Wasm/FromCmm.hs - compiler/GHC/CmmToAsm/Wasm/Types.hs - compiler/GHC/CmmToAsm/Wasm/Utils.hs - compiler/GHC/CmmToAsm/X86.hs - compiler/GHC/CmmToAsm/X86/CodeGen.hs - compiler/GHC/CmmToAsm/X86/Instr.hs - 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utils/iserv/src/Main.hs - utils/llvm-targets/gen-data-layout.sh - utils/remote-iserv/remote-iserv.cabal.in - utils/unlit/unlit.c The diff was not included because it is too large. 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