Andreas Klebinger pushed to branch wip/andreask/cbv_array at Glasgow Haskell Compiler / GHC

Commits:

• 3c2f4bb4
  by sheaf at 2025-11-11T11:47:28-05:00

  Preserve user-written kinds in data declarations
  
  This commit ensures that we preserve the user-written kind for data
  declarations, e.g. in
  
    type T2T = Type -> Type
    type D :: T2T
    data D a where { .. }
  
  that we preserve the user-written kind of D as 'T2T', instead of
  expanding the type synonym 'T2T' during kind checking.
  
  We do this by storing 'tyConKind' separately from 'tyConResKind'. This
  means that 'tyConKind' is not necessarily equal to
  'mkTyConKind binders res_kind', as e.g. in the above example the former
  is 'T2T' while the latter is 'Type -> Type'.
  
  This is explained in Note [Preserve user-written TyCon kind] in GHC.Core.TyCon.
  
  This is particularly important for Haddock, as the kinds stored in
  interface files affect the generated documentation, and we want to
  preserve the user-written types as much as possible.
  

• 19859584
  by sheaf at 2025-11-11T11:47:28-05:00

  Store user-written datacon tvs in interface files
  
  This commit ensures we store the user-written quantified type variables
  of data constructors in interface files, e.g. in
  
    data D a where
      MkD1 :: forall x. x -> D x
      MkD2 :: forall u v. u -> v -> D v
  
  The previous behaviour was to rename the universal variables to match
  the universal variables of the data constructor. This was undesirable
  because the names that end up in interface files end up mattering for
  generated Haddock documentation; it's better to preserve the user-written
  type variables.
  
  Moreover, the universal variables may not have been user-written at all,
  e.g. in an example such as:
  
    type T2T = Type -> Type
    data G :: T2T where
      MkG :: forall x. D x
  
  Here GHC will invent the type variable name 'a' for the first binder of
  the TyCon G. We really don't want to then rename the user-written 'x'
  into the generated 'a'.
  

• 034b2056
  by sheaf at 2025-11-11T11:47:28-05:00

  DataCon univ_tvs names: pick TyCon over inferred
  
  This commit changes how we compute the names of universal type variables
  in GADT data constructors. This augments the existing logic that chose
  which type variable name to use, in GHC.Tc.TyCl.mkGADTVars. We continue
  to prefer DataCon tv names for user-written binders, but we now prefer
  TyCon tv names for inferred (non-user-written) DataCon binders.
  
  This makes a difference in examples such as:
  
    type (:~~:) :: k1 -> k2 -> Type
    data a :~~: b where
      HRefl :: a :~~: a
  
  Before this patch, we ended up giving HRefl the type:
  
    forall {k2}. forall (a :: k2). a :~~: a
  
  whereas we now give it the type:
  
    forall {k1}. forall (a :: k1). a :~~: a
  
  The important part isn't really 'k1' or 'k2', but more that the inferred
  type variable names of the DataCon can be arbitrary/unpredictable (as
  they are chosen by GHC and depend on how unification proceeds), so it's
  much better to use the more predictable TyCon type variable names.
  

• 95078d00
  by sheaf at 2025-11-11T11:47:28-05:00

  Backpack Rename: use explicit record construction
  
  This commit updates the Backpack boilerplate in GHC.Iface.Rename to
  use explicit record construction rather than record update. This makes
  sure that the code stays up to date when the underlying constructors
  change (e.g. new fields are added). The rationale is further explained
  in Note [Prefer explicit record construction].
  

• 2bf36263
  by sheaf at 2025-11-11T11:47:28-05:00

  Store # eta binders in TyCon and use for Haddock
  
  This commit stores the number of TyCon binders that were introduced by
  eta-expansion (by the function GHC.Tc.Gen.HsType.splitTyConKind).
  
  This is then used to pretty-print the TyCon as the user wrote it, e.g.
  for
  
    type Effect :: (Type -> Type) -> Type -> Type
    data State s :: Effect where {..} -- arity 3
  
  GHC will eta-expand the data declaration to
  
    data State s a b where {..}
  
  but also store in the 'TyCon' that the number of binders introduced by
  this eta expansion is 2. This allows us, in
  'Haddock.Convert.synifyTyConKindSig', to recover the original user-written
  syntax, preserving the user's intent in Haddock documentation.
  
  See Note [Inline kind signatures with GADTSyntax] in Haddock.Convert.
  

• 6c91582f
  by Matthew Pickering at 2025-11-11T11:48:12-05:00

  driver: Properly handle errors during LinkNode steps
  
  Previously we were not properly catching errors during the LinkNode step
  (see T9930fail test).
  
  This is fixed by wrapping the `LinkNode` action in `wrapAction`, the
  same handler which is used for module compilation.
  
  Fixes #26496
  

• e1e1eb32
  by Matthew Pickering at 2025-11-11T11:48:54-05:00

  driver: Remove unecessary call to hscInsertHPT
  
  This call was left-over from e9445c013fbccf9318739ca3d095a3e0a2e1be8a
  
  If you follow the functions which call `upsweep_mod`, they immediately
  add the interface to the HomePackageTable when `upsweep_mod` returns.
  

• b22777d4
  by ARATA Mizuki at 2025-11-11T11:49:44-05:00

  LLVM backend: Pass the +evex512 attribute to LLVM 18+ if -mavx512f is set
  
  The newer LLVM requires the +evex512 attribute to enable use of ZMM registers.
  LLVM exhibits a backward-compatible behavior if the cpu is `x86-64`, but not if `penryn`.
  Therefore, on macOS, where the cpu is set to `penryn`, we need to explicitly pass +evex512.
  
  Fixes #26410
  

• 6ead7d06
  by Vladislav Zavialov at 2025-11-11T11:50:26-05:00

  Comments only in GHC.Parser.PostProcess.Haddock
  
  Remove outdated Note [Register keyword location], as the issue it describes
  was addressed by commit 05eb50dff2fcc78d025e77b9418ddb369db49b9f.
  

• 43fa8be8
  by sheaf at 2025-11-11T11:51:18-05:00

  localRegistersConflict: account for assignment LHS
  
  This commit fixes a serious oversight in GHC.Cmm.Sink.conflicts,
  specifically the code that computes which local registers conflict
  between an assignment and a Cmm statement.
  
  If we have:
  
    assignment: <local_reg> = <expr>
          node: <local_reg> = <other_expr>
  
  then clearly the two conflict, because we cannot move one statement past
  the other, as they assign two different values to the same local
  register. (Recall that 'conflicts (local_reg,expr) node' is False if and
  only if the assignment 'local_reg = expr' can be safely commuted past
  the statement 'node'.)
  
  The fix is to update 'GHC.Cmm.Sink.localRegistersConflict' to take into
  account the following two situations:
  
    (1) 'node' defines the LHS local register of the assignment,
    (2) 'node' defines a local register used in the RHS of the assignment.
  
  The bug is precisely that we were previously missing condition (1).
  
  Fixes #26550
  

• 79dfcfe0
  by sheaf at 2025-11-11T11:51:18-05:00

  Update assigned register format when spilling
  
  When we come to spilling a register to put new data into it, in
  GHC.CmmToAsm.Reg.Linear.allocRegsAndSpill_spill, we need to:
  
    1. Spill the data currently in the register. That is, do a spill
       with a format that matches what's currently in the register.
    2. Update the register assignment, allocating a virtual register to
       this real register, but crucially **updating the format** of this
       assignment.
  
  Due to shadowing in the Haskell code for allocRegsAndSpill_spill, we
  were mistakenly re-using the old format. This could lead to a situation
  where:
  
    a. We were using xmm6 to store a Double#.
    b. We want to store a DoubleX2# into xmm6, so we spill the current
       content of xmm6 to the stack using a scalar move (correct).
    c. We update the register assignment, but we fail to update the format
       of the assignment, so we continue to think that xmm6 stores a
       Double# and not a DoubleX2#.
    d. Later on, we need to spill xmm6 because it is getting clobbered by
       another instruction. We then decide to only spill the lower 64 bits
       of the register, because we still think that xmm6 only stores a
       Double# and not a DoubleX2#.
  
  Fixes #26542
  

• aada5db9
  by ARATA Mizuki at 2025-11-11T11:52:07-05:00

  Fix the order of spill/reload instructions
  
  The AArch64 NCG could emit multiple instructions for a single spill/reload,
  but their order was not consistent between the definition and a use.
  
  Fixes #26537
  
  Co-authored-by: sheaf <sam.derbyshire@gmail.com>
  

• 64ec82ff
  by Andreas Klebinger at 2025-11-11T11:52:48-05:00

  Add hpc to release script
  

• 741da00c
  by Ben Gamari at 2025-11-12T03:38:20-05:00

  template-haskell: Better describe getQ semantics
  
  Clarify that the state is a type-indexed map, as suggested by #26484.

• 8b080e04
  by ARATA Mizuki at 2025-11-12T03:39:11-05:00

  Fix incorrect markups in the User's Guide
  
  * Correct markup for C--: "C-\-" in reST
  * Fix internal links
  * Fix code highlighting
  * Fix inline code: Use ``code`` rather than `code`
  * Remove extra backslashes
  
  Fixes #16812
  
  Co-authored-by: sheaf <sam.derbyshire@gmail.com>
  

• a00840ea
  by Simon Peyton Jones at 2025-11-14T15:23:56+00:00

  Make TYPE and CONSTRAINT apart again
  
  This patch finally fixes #24279.
  
  * The story started with #11715
  
  * Then #21623 articulated a plan, which made Type and Constraint
    not-apart; a horrible hack but it worked. The main patch was
       commit 778c6adca2c995cd8a1b84394d4d5ca26b915dac
       Author: Simon Peyton Jones <simonpj@microsoft.com>
       Date:   Wed Nov 9 10:33:22 2022 +0000
  
       Type vs Constraint: finally nailed
  
  * #24279 reported a bug in the above big commit; this small patch fixes it
      commit af6932d6c068361c6ae300d52e72fbe13f8e1f18
      Author: Simon Peyton Jones <simon.peytonjones@gmail.com>
      Date:   Mon Jan 8 10:49:49 2024 +0000
  
      Make TYPE and CONSTRAINT not-apart
  
      Issue #24279 showed up a bug in the logic in GHC.Core.Unify.unify_ty
      which is supposed to make TYPE and CONSTRAINT be not-apart.
  
  * Then !10479 implemented "unary classes".
  
  * That change in turn allows us to make Type and Constraint apart again,
    cleaning up the compiler and allowing a little bit more expressiveness.
  
    It fixes the original hope in #24279, namely that `Type` and `Constraint`
    should be distinct throughout.
  

• c0a1e574
  by Georgios Karachalias at 2025-11-15T05:14:31-05:00

  Report all missing modules with -M
  
  We now report all missing modules at once in GHC.Driver.Makefile.processDeps,
  as opposed to only reporting a single missing module. Fixes #26551.
  

• c9fa3449
  by Sylvain Henry at 2025-11-15T05:15:26-05:00

  JS: fix array index for registers
  
  We used to store R32 in h$regs[-1]. While it's correct in JavaScript,
  fix this to store R32 in h$regs[0] instead.
  

• 9e469909
  by Sylvain Henry at 2025-11-15T05:15:26-05:00

  JS: support more than 128 registers (#26558)
  
   The JS backend only supported 128 registers (JS variables/array slots
   used to pass function arguments). It failed in T26537 when 129
   registers were required.
  
  This commit adds support for more than 128 registers: it is now limited to
  maxBound :: Int (compiler's Int). If we ever go above this threshold the
  compiler now panics with a more descriptive message.
  
  A few built-in JS functions were assuming 128 registers and have been
  rewritten to use loops. Note that loops are only used for "high"
  registers that are stored in an array: the 31 "low" registers are still
  handled with JS global variables and with explicit switch-cases to
  maintain good performance in the most common cases (i.e. few registers
  used). Adjusting the number of low registers is now easy: just one
  constant to adjust (GHC.StgToJS.Regs.lowRegsCount).
  
  No new test added: T26537 is used as a regression test instead.
  

• 0a64a78b
  by Sven Tennie at 2025-11-15T20:31:10-05:00

  AArch64: Simplify CmmAssign and CmmStore
  
  The special handling for floats was fake: The general case is always
  used. So, the additional code path isn't needed (and only adds
  complexity for the reader.)
  

• 15b311be
  by sheaf at 2025-11-15T20:32:02-05:00

  SimpleOpt: refactor & push coercions into lambdas
  
  This commit improves the simple optimiser (in GHC.Core.SimpleOpt)
  in a couple of ways:
  
    - The logic to push coercion lambdas is shored up.
  
      The function 'pushCoercionIntoLambda' used to be called in 'finish_app',
      but this meant we could not continue to optimise the program after
      performing this transformation.
  
      Now, we call 'pushCoercionIntoLambda' as part of 'simple_app'.
      Doing so can be important when dealing with unlifted newtypes,
      as explained in  Note [Desugaring unlifted newtypes].
  
    - The code is re-structured to avoid duplication and out-of-sync
      code paths.
  
      Now, 'simple_opt_expr' defers to 'simple_app' for the 'App', 'Var',
      'Cast' and 'Lam' cases. This means all the logic for those is
      centralised in a single place (e.g. the 'go_lam' helper function).
  
      To do this, the general structure is brought a bit closer to the
      full-blown simplifier, with a notion of 'continuation'
      (see 'SimpleContItem').
  
  This commit also modifies GHC.Core.Opt.Arity.pushCoercionIntoLambda to
  apply a substitution (a slight generalisation of its existing implementation).
  

• b33284c7
  by sheaf at 2025-11-15T20:32:02-05:00

  Improve typechecking of data constructors
  
  This commit changes the way in which we perform typecheck data
  constructors, in particular how we make multiplicities line up.
  
  Now, impedance matching occurs as part of the existing subsumption
  machinery. See the revamped Note [Typechecking data constructors] in
  GHC.Tc.Gen.App, as well as Note [Polymorphisation of linear fields]
  in GHC.Core.Multiplicity.
  
  This allows us to get rid of a fair amount of hacky code that was
  added with the introduction of LinearTypes; in particular the logic of
  GHC.Tc.Gen.Head.tcInferDataCon.
  
  -------------------------
  Metric Decrease:
      T10421
      T14766
      T15164
      T15703
      T19695
      T5642
      T9630
      WWRec
  -------------------------
  

• b6faf5d0
  by sheaf at 2025-11-15T20:32:02-05:00

  Handle unsaturated rep-poly newtypes
  
  This commit allows GHC to handle unsaturated occurrences of unlifted
  newtype constructors. The plan is detailed in
  Note [Eta-expanding rep-poly unlifted newtypes]
  in GHC.Tc.Utils.Concrete: for unsaturated unlifted newtypes, we perform
  the appropriate representation-polymorphism check in tcInstFun.
  

• 682bf979
  by Mike Pilgrem at 2025-11-16T16:44:14+00:00

  Fix #26293 Valid stack.yaml for hadrian
  

• acc70c3a
  by Simon Peyton Jones at 2025-11-18T16:21:20-05:00

  Fix a bug in defaulting
  
  Addresses #26582
  
  Defaulting was doing some unification but then failing to
  iterate. Silly.
  
  I discovered that the main solver was unnecessarily iterating even
  if there was a unification for an /outer/ unification variable, so
  I fixed that too.
  

• c12fa73e
  by Simon Peyton Jones at 2025-11-19T02:55:01-05:00

  Make PmLit be in Ord, and use it in Map
  
  This MR addresses #26514, by changing from
  
      data PmAltConSet = PACS !(UniqDSet ConLike) ![PmLit]
    to
      data PmAltConSet = PACS !(UniqDSet ConLike) !(Map PmLit PmLit)
  
  This matters when doing pattern-match overlap checking, when there
  is a very large set of patterns.  For most programs it makes
  no difference at all.
  
  For the N=5000 case of the repro case in #26514, compiler
  mutator time (with `-fno-code`) goes from 1.9s to 0.43s.
  
  All for the price for an Ord instance for PmLit
  

• 41b84f40
  by sheaf at 2025-11-19T02:55:52-05:00

  Add passing tests for #26311 and #26072
  
  This commit adds two tests cases that now pass since landing the changes
  to typechecking of data constructors in b33284c7.
  
  Fixes #26072 #26311
  

• 1faa758a
  by sheaf at 2025-11-19T02:55:52-05:00

  mkCast: weaken bad cast warning for multiplicity
  
  This commit weakens the warning message emitted when constructing a bad
  cast in mkCast to ignore multiplicity.
  
  Justification: since b33284c7, GHC uses sub-multiplicity coercions to
  typecheck data constructors. The coercion optimiser is free to discard
  these coercions, both for performance reasons, and because GHC's Core
  simplifier does not (yet) preserve linearity.
  We thus weaken 'mkCast' to use 'eqTypeIgnoringMultiplicity' instead of
  'eqType', to avoid getting many spurious warnings about mismatched
  multiplicities.
  

• 55eab80d
  by Sylvain Henry at 2025-11-20T17:33:13-05:00

  Build external interpreter program on demand (#24731)
  
  This patch teaches GHC how to build the external interpreter program
  when it is missing. As long as we have the `ghci` library, doing this is
  trivial so most of this patch is refactoring for doing it sanely.
  

• 08bbc028
  by Rodrigo Mesquita at 2025-11-20T17:33:54-05:00

  Add tests for #23973 and #26565
  
  These were fixed by 4af4f0f070f83f948e49ad5d7835fd91b8d3f0e6 in !10417
  

• 6b42232c
  by sheaf at 2025-11-20T17:34:35-05:00

  Mark T26410_ffi as fragile on Windows
  
  As seen in #26595, this test intermittently fails on Windows.
  This commit marks it as fragile, until we get around to fixing it.
  

• b7b7c049
  by Andrew Lelechenko at 2025-11-21T21:04:01+00:00

  Add nubOrd / nubOrdBy to Data.List and Data.List.NonEmpty
  
  As per https://github.com/haskell/core-libraries-committee/issues/336
  

• 352d5462
  by Marc Scholten at 2025-11-22T10:33:03-05:00

  Fix haddock test runner to handle UTF-8 output
  
  xhtml 3000.4.0.0 now produces UTF-8 output instead of escaping non-ASCII characters.
  
  When using --test-accept it previously wrote files in the wrong encoding
  because they have not been decoded properly when reading the files.
  

• 48a3ed57
  by Simon Peyton Jones at 2025-11-25T15:33:54+00:00

  Add a fast-path for args=[] to occAnalApp
  
  In the common case of having not arguments, occAnalApp
  was doing redundant work.
  

• 951e5ed9
  by Simon Peyton Jones at 2025-11-25T15:33:54+00:00

  Fix a performance hole in the occurrence analyser
  
  As #26425 showed, the clever stuff in
  
     Note [Occurrence analysis for join points]
  
  does a lot of duplication of usage details.  This patch
  improved matters with a little fancy footwork.  It is
  described in the new (W4) of the same Note.
  
  Compile-time allocations go down slightly. Here are the changes
  of +/- 0.5% or more:
  
      T13253(normal)    329,369,244    326,395,544  -0.9%
  T13253-spj(normal)     66,410,496     66,095,864  -0.5%
      T15630(normal)    129,797,200    128,663,136  -0.9%
     T15630a(normal)    129,212,408    128,027,560  -0.9%
      T16577(normal)  6,756,706,896  6,723,028,512  -0.5%
      T18282(normal)    128,462,070    125,808,584  -2.1% GOOD
     T18698a(normal)    208,418,305    202,037,336  -3.1% GOOD
      T18730(optasm)    136,981,756    136,208,136  -0.6%
      T18923(normal)     58,103,088     57,745,840  -0.6%
      T19695(normal)  1,386,306,272  1,365,609,416  -1.5%
      T26425(normal)  3,344,402,957  2,457,811,664 -26.5% GOOD
       T6048(optasm)     79,763,816     79,212,760  -0.7%
       T9020(optasm)    225,278,408    223,682,440  -0.7%
       T9961(normal)    303,810,717    300,729,168  -1.0% GOOD
  
           geo. mean                                -0.5%
           minimum                                 -26.5%
           maximum                                  +0.4%
  
  Metric Decrease:
      T18282
      T18698a
      T26425
      T9961
  

• f1959dfc
  by Simon Peyton Jones at 2025-11-26T11:58:07+00:00

  Remove a quadratic-cost assertion check in mkCoreApp
  
  See the new Note [Assertion checking in mkCoreApp]
  

• 98fa0d36
  by Simon Hengel at 2025-11-27T17:54:57-05:00

  Fix typo in docs/users_guide/exts/type_families.rst
  

• 5b97e5ce
  by Simon Hengel at 2025-11-27T17:55:37-05:00

  Fix broken RankNTypes example in user's guide
  

• fa2aaa00
  by Simon Peyton Jones at 2025-11-27T17:56:18-05:00

  Switch off specialisation in ExactPrint
  
  In !15057 (where we re-introduced -fpolymoprhic-specialisation) we found
  that ExactPrint's compile time blew up by a factor of 5.  It turned out
  to be caused by bazillions of specialisations of `markAnnotated`.
  
  Since ExactPrint isn't perf-critical, it does not seem worth taking
  the performance hit, so this patch switches off specialisation in
  this one module.
  

• 1fd25987
  by Simon Peyton Jones at 2025-11-27T17:56:18-05:00

  Switch -fpolymorphic-specialisation on by default
  
  This patch addresses #23559.
  
  Now that !10479 has landed and #26329 is fixed, we can switch on
  polymorphic specialisation by default, addressing a bunch of other
  tickets listed in #23559.
  
  Metric changes:
    * CoOpt_Singleton: +4% compiler allocations: we just get more
      specialisations
  
    * info_table_map_perf: -20% decrease in compiler allocations.
      This is caused by using -fno-specialise in ExactPrint.hs
      Without that change we get a 4x blow-up in compile time;
      see !15058 for details
  
  Metric Decrease:
      info_table_map_perf
  Metric Increase:
      CoOpt_Singletons
  

• b7fe7445
  by Matthew Pickering at 2025-11-27T17:56:59-05:00

  rts: Fix a deadlock with eventlog flush interval and RTS shutdown
  
  The ghc_ticker thread attempts to flush at the eventlog tick interval, this requires
  waiting to take all capabilities.
  
  At the same time, the main thread is shutting down, the schedule is
  stopped and then we wait for the ticker thread to finish.
  
  Therefore we are deadlocked.
  
  The solution is to use `newBoundTask/exitMyTask`, so that flushing can
  cooperate with the scheduler shutdown.
  
  Fixes #26573
  

• 1d4a1229
  by sheaf at 2025-11-27T17:58:02-05:00

  SimpleOpt: don't subst in pushCoercionIntoLambda
  
  It was noticed in #26589 that the change in 15b311be was incorrect:
  the simple optimiser carries two different substitution-like pieces of
  information: 'soe_subst' (from InVar to OutExpr) and 'soe_inl'
  (from InId to InExpr). It is thus incorrect to have 'pushCoercionIntoLambda'
  apply the substitution from 'soe_subst' while discarding 'soe_inl'
  entirely, which is what was done in 15b311be.
  
  Instead, we change back pushCoercionIntoLambda to take an InScopeSet,
  and optimise the lambda before calling 'pushCoercionIntoLambda' to avoid
  mixing InExpr with OutExpr, or mixing two InExpr with different
  environments. We can then call 'soeZapSubst' without problems.
  
  Fixes #26588 #26589
  

• 84a087d5
  by Sylvain Henry at 2025-11-28T17:35:28-05:00

  Fix PIC jump tables on Windows (#24016)
  
  Avoid overflows in jump tables by using a base label closer to the jump
  targets. See added Note [Jump tables]
  

• 82db7042
  by Zubin Duggal at 2025-11-28T17:36:10-05:00

  rts/linker/PEi386: Copy strings before they are inserted into LoadedDllCache. The original strings are temporary and might be freed at an arbitrary point.
  
  Fixes #26613
  

• ff3f0d09
  by Ben Gamari at 2025-11-29T18:34:28-05:00

  gitlab-ci: Run ghcup-metadata jobs on OpenCape runners
  
  This significantly reduces our egress traffic
  and makes the jobs significantly faster.

• ef0dc33b
  by Matthew Pickering at 2025-11-29T18:35:10-05:00

  Use 'OsPath' in getModificationTimeIfExists
  
  This part of the compiler is quite hot during recompilation checking in
  particular since the filepaths will be translated to a string. It is
  better to use the 'OsPath' native function, which turns out to be easy
  to do.
  

• fa3bd0a6
  by Georgios Karachalias at 2025-11-29T18:36:05-05:00

  Use OsPath in PkgDbRef and UnitDatabase, not FilePath
  

• 0d7c05ec
  by Ben Gamari at 2025-12-01T03:13:46-05:00

  hadrian: Place user options after package arguments
  
  This makes it easier for the user to override the default package
  arguments with `UserSettings.hs`.
  
  Fixes #25821.
  
  -------------------------
  Metric Decrease:
      T14697
  -------------------------
  

• 3b2c4598
  by Vladislav Zavialov at 2025-12-01T03:14:29-05:00

  Namespace-specified wildcards in import/export lists (#25901)
  
  This change adds support for top-level namespace-specified wildcards
  `type ..` and `data ..` to import and export lists.
  
  Examples:
    import M (type ..) -- imports all type and class constructors from M
    import M (data ..) -- imports all data constructors and terms from M
    module M (type .., f) where
      -- exports all type and class constructors defined in M,
      -- plus the function 'f'
  
  The primary intended usage of this feature is in combination with module
  aliases, allowing namespace disambiguation:
    import Data.Proxy as T (type ..)  -- T.Proxy is unambiguously the type constructor
    import Data.Proxy as D (data ..)  -- D.Proxy is unambiguously the data constructor
  
  The patch accounts for the interactions of wildcards with:
  * Imports with `hiding` clauses
  * Import warnings -Wunused-imports, -Wdodgy-imports
  * Export warnings -Wduplicate-exports, -Wdodgy-exports
  
  Summary of the changes:
  
  1. Move the NamespaceSpecifier type from GHC.Hs.Binds to GHC.Hs.Basic,
     making it possible to use it in more places in the AST.
  
  2. Extend the AST (type: IE) with a representation of `..`, `type ..`,
     and `data ..` (constructor: IEWholeNamespace). Per the proposal, the
     plain `..` is always rejected with a dedicated error message.
  
  3. Extend the grammar in Parser.y with productions for `..`, `type ..`,
     and `data ..` in both import and export lists.
  
  4. Implement wildcard imports by updating the `filterImports` function
     in GHC.Rename.Names; the logic for IEWholeNamespace is roughly
     modeled after the Nothing (no explicit import list) case.
  
  5. Implement wildcard exports by updating the `exports_from_avail`
     function in GHC.Tc.Gen.Export; the logic for IEWholeNamespace is
     closely modeled after the IEModuleContents case.
  
  6. Refactor and extend diagnostics to report the new warnings and
     errors. See PsErrPlainWildcardImport, DodgyImportsWildcard,
                 PsErrPlainWildcardExport, DodgyExportsWildcard,
                 TcRnDupeWildcardExport.
  
  Note that this patch is specifically about top-level import/export
  items. Subordinate import/export items are left unchanged.
  

• c71faa76
  by Luite Stegeman at 2025-12-01T03:16:05-05:00

  rts: Handle overflow of ELF section header string table
  
  If the section header string table is stored in a section greater
  than or equal to SHN_LORESERVE (0xff00), the 16-bit field e_shstrndx
  in the ELF header does not contain the section number, but rather
  an overflow value SHN_XINDEX (0xffff) indicating that we need to look
  elsewhere.
  
  This fixes the linker by not using e_shstrndx directly but calling
  elf_shstrndx, which correctly handles the SHN_XINDEX value.
  
  Fixes #26603
  

• ab20eb54
  by Mike Pilgrem at 2025-12-01T22:46:55+00:00

  Re CLC issue 292 Warn GHC.Internal.List.{init,last} are partial
  
  Also corrects the warning for `tail` to refer to `Data.List.uncons` (like the existing warning for `head`).
  
  In module `Settings.Warnings`, applies `-Wno-x-partial` to the `filepath`, and `parsec` packages (outside GHC's repository).
  
  Also bumps submodules.
  

• fc1d7f79
  by Jade Lovelace at 2025-12-02T11:04:09-05:00

  docs: fix StandaloneKindSignatures in DataKinds docs
  
  These should be `type` as otherwise GHC reports a duplicate definition
  error.
  

• beae879b
  by Rodrigo Mesquita at 2025-12-03T15:42:37+01:00

  task: Substitute some datatypes for newtypes
  
  * Substitutes some data type declarations for newtype declarations
  * Adds comment to `LlvmConfigCache`, which must decidedly not be a
    newtype.
  
  Fixes #23555
  

• 3bd7dd44
  by mangoiv at 2025-12-04T04:36:45-05:00

  Renamer: reinstate the template haskell level check in notFound
  
  Out-of-scope names might be caused by a staging error, as is explained by
  Note [Out of scope might be a staging error] in GHC.Tc.Utils.Env.hs.
  This logic was assumed to be dead code after 217caad1 and has thus been
  removed. This commit reintroduces it and thus fixes issue #26099.
  

• 0318010b
  by Zubin Duggal at 2025-12-04T04:37:27-05:00

  testlib: Optionally include the way name in the expected output file
  
  This allows us to have different outputs for different ways.
  

• 6d945fdd
  by Zubin Duggal at 2025-12-04T04:37:27-05:00

  testsuite: Accept output of tests failing in ext-interp way due to differing compilation requirements
  
  Fixes #26552
  

• 0ffc5243
  by Cheng Shao at 2025-12-04T04:38:09-05:00

  devx: minor fixes for compile_flags.txt
  
  This patch includes minor fixes for compile_flags.txt to improve
  developer experience when using clangd as language server to hack on
  RTS C sources:
  
  - Ensure `-fPIC` is passed and `__PIC__` is defined, to be coherent
    with `-DDYNAMIC` and ensure the `__PIC__` guarded code paths are
    indexed
  - Add the missing `-DRtsWay` definition, otherwise a few source files
    like `RtsUtils.c` and `Trace.c` would produce clangd errors
  

• e36a5fcb
  by Matthew Pickering at 2025-12-05T16:25:57-05:00

  Add support for building bytecode libraries
  
  A bytecode library is a collection of bytecode files (.gbc) and a
  library which combines together additional object files.
  
  A bytecode library is created by invoking GHC with the `-bytecodelib`
  flag.
  
  A library can be created from in-memory `ModuleByteCode` linkables or
  by passing `.gbc` files as arguments on the command line.
  
  Fixes #26298
  

• 8f9ae339
  by Matthew Pickering at 2025-12-05T16:25:57-05:00

  Load bytecode libraries to satisfy package dependencies
  
  This commit allows you to use a bytecode library to satisfy a package
  dependency when using the interpreter.
  
  If a user enables `-fprefer-byte-code`, then if a package provides a
  bytecode library, that will be loaded and used to satisfy the
  dependency.
  
  The main change is to separate the relevant parts of the `LoaderState`
  into external and home package byte code. Bytecode is loaded into either
  the home package or external part (similar to HPT/EPS split), HPT
  bytecode can be unloaded. External bytecode is never unloaded.
  
  The unload function has also only been called with an empty list of
  "stable linkables" for a long time. It has been modified to directly
  implement a complete unloading of the home package bytecode linkables.
  
  At the moment, the bytecode libraries are found in the "library-dirs"
  field from the package description. In the future when `Cabal`
  implements support for "bytecode-library-dirs" field, we can read the
  bytecode libraries from there. No changes to the Cabal submodule are
  necessary at the moment.
  
  Four new tests are added in testsuite/tests/cabal, which generate fake
  package descriptions and test loading the libraries into GHCi.
  
  Fixes #26298
  

• 54458ce4
  by mangoiv at 2025-12-05T16:26:50-05:00

  ExplicitLevelImports: improve documentation of the code
  
  - more explicit names for variable names like `flg` or `topLevel`
  - don't pass the same value twice to functions
  - some explanations of interesting but undocumented code paths
  - adjust comment to not mention non-existent error message
  

• c7061392
  by mangoiv at 2025-12-05T16:27:42-05:00

  driver: don't expect nodes to exist when checking paths between them
  
  In `mgQueryZero`, previously node lookups were expected to never fail,
  i.e. it was expected that when calculating the path between two nodes in
  a zero level import graph, both nodes would always exist. This is not
  the case, e.g. in some situations involving exact names (see the
  test-case). The fix is to first check whether the node is present in the
  graph at all, instead of panicking, just to report that there is no
  path.
  
  Closes #26568
  

• d6cf8463
  by Peng Fan at 2025-12-06T11:06:28-05:00

  NCG/LA64: Simplify genCCall into two parts
  
  genCCall is too long, so it's been simplified into two parts:
  genPrim and genLibCCall.
  
  Suggested by Andreas Klebinger
  

• 9d371d23
  by Matthew Pickering at 2025-12-06T11:07:09-05:00

  hadrian: Use a response file to invoke GHC for dep gathering.
  
  In some cases we construct an argument list too long for GHC to
  handle directly on windows. This happens when we generate
  the dependency file because the command line will contain
  references to a large number of .hs files.
  
  To avoid this we now invoke GHC using a response file when
  generating dependencies to sidestep length limitations.
  
  Note that we only pass the actual file names in the dependency
  file. Why? Because this side-steps #26560
  

• 0043bfb0
  by Marc Scholten at 2025-12-06T11:08:03-05:00

  update xhtml to 3000.4.0.0
  
  haddock-api: bump xhtml bounds
  
  haddock-api: use lazy text instead of string to support xhtml 3000.4.0.0
  
  Bumping submodule xhtml to 3000.4.0.0
  
  add xhtml to stage0Packages
  
  remove unused import of writeUtf8File
  
  Remove redundant import
  
  Update haddock golden files for xhtml 3000.4.0.0
  
  Metric Decrease:
      haddock.Cabal
      haddock.base
  

• fc958fc9
  by Julian Ospald at 2025-12-06T11:08:53-05:00

  rts: Fix object file format detection in loadArchive
  
  Commit 76d1041dfa4b96108cfdd22b07f2b3feb424dcbe seems to
  have introduced this bug, ultimately leading to failure of
  test T11788. I can only theorize that this test isn't run
  in upstream's CI, because they don't build a static GHC.
  
  The culprit is that we go through the thin archive, trying
  to follow the members on the filesystem, but don't
  re-identify the new object format of the member. This pins
  `object_fmt` to `NotObject` from the thin archive.
  
  Thanks to @angerman for spotting this.
  

• 0f297f6e
  by mangoiv at 2025-12-06T11:09:44-05:00

  users' guide: don't use f strings in the python script to ensure compatibility with python 3.5
  

• 3bfe7aa2
  by Matthew Pickering at 2025-12-07T12:18:57-05:00

  ci: Try using multi repl in ghc-in-ghci test
  
  This should be quite a bit faster than the ./hadrian/ghci command as it
  doesn't properly build all the dependencies.
  

• 2ef1601a
  by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00

  Stack.Decode: Don't error on bitmap size 0
  
  A RET_BCO may have a bitmap with no payload.
  In that case, the bitmap = 0.
  
  One can observe this by using -ddump-bcos and interpreting
  
  ```
  main = pure ()
  ```
  
  Observe, for instance, that the BCO for this main function has size 0:
  
  ```
  ProtoBCO Main.main#0:
     \u []
         break<main:Main,0>() GHC.Internal.Base.pure
                                  GHC.Internal.Base.$fApplicativeIO GHC.Internal.Tuple.()
     bitmap:  0 []
     BRK_FUN <breakarray> main:Main 0 <cc>
     PACK     () 0
     PUSH_G   GHC.Internal.Base.$fApplicativeIO
     PUSH_APPLY_PP
     PUSH_G   GHC.Internal.Base.pure
     ENTER
  ```
  
  Perhaps we never tried to decode a stack in which a BCO like this was
  present. However, for the debugger, we want to decode stacks of threads
  stopped at breakpoints, and these kind of BCOs do get on a stack under
  e.g. `stg_apply_interp_info` frames.
  
  See the accompanying test in the next commit for an example to trigger
  the bug this commit fixes.
  
  Fixes #26640
  

• 747153d2
  by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00

  Add test for #26640
  

• d4b1e353
  by Simon Hengel at 2025-12-10T00:00:02-05:00

  Fix syntax error in gadt_syntax.rst

• 91cc8be6
  by Cheng Shao at 2025-12-10T00:00:43-05:00

  ci: fix "ci.sh clean" to address frequent out of space error on windows runners
  
  This patch fixes the `ci.sh clean` logic to address frequent out of
  space error on windows runners; previously it didn't clean up the
  inplace mingw blobs, which is the largest source of space leak on
  windows runners. See added comment for detailed explanation.
  

• fe2b79f4
  by Recursion Ninja at 2025-12-10T08:34:18-05:00

  Narrow before optimising MUL/DIV/REM into shifts
  
  The MUL/DIV/REM operations can be optimised into shifts when one of the
  operands is a constant power of 2. However, as literals in Cmm are
  stored as 'Integer', for this to be correct we first need to narrow the
  literal to the appropriate width before checking whether the literal is
  a power of 2.
  
  Fixes #25664
  

• 06c2349c
  by Recursion Ninja at 2025-12-10T08:34:58-05:00

  Decouple 'Language.Haskell.Syntax.Type' from 'GHC.Utils.Panic'
  
    - Remove the *original* defintion of 'hsQTvExplicit' defined within 'Language.Haskell.Syntax.Type'
  
    - Redefine 'hsQTvExplicit' as 'hsq_explicit' specialized to 'GhcPass' exported by 'GHC.Utils.Panic'
  
    - Define 'hsQTvExplicitBinders' as 'hsq_explicit' specialized to 'DocNameI' exported by 'Haddock.GhcUtils'.
  
    - Replace all call sites of the original 'hsQTvExplicit' definition with either:
      1. 'hsQTvExplicit' updated definition
      2. 'hsQTvExplicitBinders'
  
  All call sites never entered the 'XLHsQTyVars' constructor branch, but a call to 'panic' existed on this code path because the type system was not strong enought to guarantee that the 'XLHsQTyVars' construction was impossible.
  These two specialized functions provide the type system with enough information to make that guarantee, and hence the dependancy on 'panic' can be removed.
  

• ac0815d5
  by sheaf at 2025-12-10T23:39:57-05:00

  Quantify arg before mult in function arrows
  
  As noted in #23764, we expect quantification order to be left-to-right,
  so that in a type such as
  
    a %m -> b
  
  the inferred quantification order should be [a, m, b] and not [m, a, b].
  
  This was addressed in commit d31fbf6c, but that commit failed to update
  some other functions such as GHC.Core.TyCo.FVs.tyCoFVsOfType.
  
  This affects Haddock, as whether we print an explicit forall or not
  depends on whether the inferred quantification order matches the actual
  quantification order.
  

• 2caf796e
  by sheaf at 2025-12-10T23:39:57-05:00

  Haddock: improvements to ty-var quantification
  
  This commit makes several improvements to how Haddock deals with the
  quantification of type variables:
  
    1. In pattern synonyms, Haddock used to jumble up universal and
       existential quantification. That is now fixed, fixing #26252.
  
       Tested in the 'PatternSyns2' haddock-html test.
  
    2. The logic for computing whether to use an explicit kind annotation
       for a type variable quantified in a forall was not even wrong.
       This commit improves the heuristic, but it will always remain an
       imperfect heuristic (lest we actually run kind inference again).
       In the future (#26271), we hope to avoid reliance on this heuristic.
  

• b14bdd59
  by Teo Camarasu at 2025-12-10T23:40:38-05:00

  Add explicit export list to GHC.Num
  
  Let's make clear what this module exports to allow us to easily deprecate and remove some of these in the future. Resolves https://gitlab.haskell.org/ghc/ghc/-/issues/26625
  

• d99f8326
  by Cheng Shao at 2025-12-11T19:14:18-05:00

  compiler: remove unused CPP code in foreign stub
  
  This patch removes unused CPP code in the generated foreign stub:
  
  - `#define IN_STG_CODE 0` is not needed, since `Rts.h` already
    includes this definition
  - The `if defined(__cplusplus)` code paths are not needed in the `.c`
    file, since we don't generate C++ stubs and don't include C++
    headers in our stubs. But it still needs to be present in the `.h`
    header since it might be later included into C++ source files.
  

• 46c9746f
  by Cheng Shao at 2025-12-11T19:14:57-05:00

  configure: bump LlvmMaxVersion to 22
  
  This commit bumps LlvmMaxVersion to 22; 21.x releases have been
  available since Aug 26th, 2025 and there's no regressions with 21.x so
  far. This bump is also required for updating fedora image to 43.
  

• 96fce8d0
  by Cheng Shao at 2025-12-12T01:17:51+01:00

  hadrian: add support for building with UndefinedBehaviorSanitizer
  
  This patch adds a +ubsan flavour transformer to hadrian to build all
  stage1+ C/C++ code with UndefinedBehaviorSanitizer. This is
  particularly useful to catch potential undefined behavior in the RTS
  codebase.
  

• f7a06d8c
  by Cheng Shao at 2025-12-12T01:17:51+01:00

  ci: update alpine/fedora & add ubsan job
  
  This patch updates alpine image to 3.23, fedora image to 43, and adds
  a `x86_64-linux-fedora43-validate+debug_info+ubsan` job that's run in
  validate/nightly pipelines to catch undefined behavior in the RTS
  codebase.
  

• 2ccd11ca
  by Cheng Shao at 2025-12-12T01:17:51+01:00

  rts: fix zero-length VLA undefined behavior in interpretBCO
  
  This commit fixes a zero-length VLA undefined behavior in interpretBCO, caught by UBSan:
  
  ```
  +rts/Interpreter.c:3133:19: runtime variable length array bound evaluates to non-positive value 0
  ```
  

• 4156ed19
  by Cheng Shao at 2025-12-12T01:17:51+01:00

  rts: fix unaligned ReadSpB in interpretBCO
  
  This commit fixes unaligned ReadSpB in interpretBCO, caught by UBSan:
  
  ```
  +rts/Interpreter.c:2174:64: runtime load of misaligned address 0x004202059dd1 for type 'StgWord', which requires 8 byte alignment
  ```
  
  To perform proper unaligned read, we define StgUnalignedWord as a type
  alias of StgWord with aligned(1) attribute, and load StgUnalignedWord
  instead of StgWord in ReadSpB, so the C compiler is aware that we're
  not loading with natural alignment.
  

• fef89fb9
  by Cheng Shao at 2025-12-12T01:17:51+01:00

  rts: fix signed integer overflow in subword arithmetic in interpretBCO
  
  This commit fixes signed integer overflow in subword arithmetic in
  interpretBCO, see added note for detailed explanation.
  

• 3c001377
  by Cheng Shao at 2025-12-13T05:03:15-05:00

  ci: use treeless fetch for perf notes
  
  This patch improves the ci logic for fetching perf notes by using
  treeless fetch
  (https://github.blog/open-source/git/get-up-to-speed-with-partial-clone-and-shallow-clone),
  to avoid downloading all blobs of the perf notes repo at once, and
  only fetch the actually required blobs on-demand when needed. This
  makes the initial `test-metrics.sh pull` operation much faster, and
  also more robust, since we are seeing an increasing rate of 504 errors
  in CI when fetching all perf notes at once, which is a major source of
  CI flakiness at this point.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 123a8d77
  by Peter Trommler at 2025-12-13T05:03:57-05:00

  Cmm: remove restriction in MachOp folding
  

• 0b54b5fd
  by Andreas Klebinger at 2025-12-13T05:04:38-05:00

  Remove explicit Typeable deriviations.
  

• 08b13f7b
  by Cheng Shao at 2025-12-13T05:05:18-05:00

  ci: set gc.auto=0 during setup stage
  
  This patch sets `gc.auto=0` during `setup` stage of CI, see added
  comment for detailed explanation.
  

• 3b5aecb5
  by Ben Gamari at 2025-12-13T23:43:10+01:00

  Bump exceptions submodule to 0.10.11
  

• c32de3b0
  by Johan Förberg at 2025-12-15T02:36:03-05:00

  base: Define Semigroup and Monoid instances for lazy ST
  
  CLC proposal:
  https://github.com/haskell/core-libraries-committee/issues/374
  
  Fixes #26581
  

• 4f8b660c
  by mangoiv at 2025-12-15T02:37:05-05:00

  ci: do not require nightly cabal-reinstall job to succeed
  

• 2c2a3ef3
  by Cheng Shao at 2025-12-15T11:51:53-05:00

  docs: drop obsolete warning about -fexternal-interpreter on windows
  
  This patch drops an obsolete warning about -fexternal-interpreter not
  supported on windows; it is supported since a long time ago, including
  the profiled way.
  

• 68573aa5
  by Marc Scholten at 2025-12-15T11:53:00-05:00

  haddock: Drop Haddock.Backends.HaddockDB as it's unused
  

• b230d549
  by mangoiv at 2025-12-16T15:17:45-05:00

  base: generalize delete{Firsts,}By
  
  When we delete{Firsts,}By we should not require the
  lists to be  the same type. This is an especially useful
  generalisation in the case of deleteFirstsBy because we
  can skip an invocation of the map function.
  
  This change was discussed on the core-libraries-committee's bug
  tracker at https://github.com/haskell/core-libraries-committee/issues/372.
  

• 6a2b43e3
  by Cheng Shao at 2025-12-16T15:18:30-05:00

  compiler: clean up redundant LANGUAGE pragmas
  
  This patch bumps `default-language` of `ghc`/`ghc-bin` from `GHC2021`
  to `GHC2024` (which is supported in ghc 9.10, current boot ghc lower
  version bound), and also cleans up redundant `LANGUAGE` pragmas (as
  well as `default-extensions`/`other-extensions`) that are already
  implied by `GHC2024`.
  
  Co-authored-by: Codex <codex@openai.com>
  

• fca9cd7c
  by sheaf at 2025-12-18T13:18:18-05:00

  X86 CodeGen: fix assign_eax_sse_regs
  
  We must set %al to the number of SSE2 registers that contain arguments
  (in case we are dealing with a varargs function). The logic for counting
  how many arguments reside in SSE2 registers was incorrect, as it used
  'isFloatFormat', which incorrectly ignores vector registers.
  
  We now instead do case analysis on the register class:
  
    is_sse_reg r =
      case targetClassOfReg platform r of
        RcFloatOrVector -> True
        RcInteger       -> False
  
  This change is necessary to prevent segfaults in T20030_test1j, because
  subsequent commits change the format calculations, resulting in vector
  formats more often.
  

• 53150617
  by sheaf at 2025-12-18T13:18:19-05:00

  X86 regUsageOfInstr: fix format for IMUL
  
  When used with 8-bit operands, the IMUL instruction returns the result
  in the lower 16 bits of %rax (also known as %ax). This is different
  than for the other sizes, where an input at 16, 32 or 64 bits will
  result in 16, 32 or 64 bits of output in both %rax and %rdx.
  
  This doesn't affect the behaviour of the compiler, because we don't
  allow partial writes at sub-word sizes. The rationale is explained
  in Wrinkle [Don't allow scalar partial writes] in Note [Register formats in liveness analysis],
  in GHC.CmmToAsm.Reg.Liveness.
  

• c7a56dd1
  by sheaf at 2025-12-18T13:18:19-05:00

  Liveness analysis: consider register formats
  
  This commit updates the register allocator to be a bit more careful in
  situations in which a single register is used at multiple different
  formats, e.g. when xmm1 is used both to store a Double# and a DoubleX2#.
  
  This is done by introducing the 'Regs' newtype around 'UniqSet RegWithFormat',
  for which the combining operations take the larger of the two formats
  instead of overriding the format.
  
  Operations on 'Regs' are defined in 'GHC.CmmToAsm.Reg.Regs'. There is
  a modest compile-time cost for the additional overhead for tracking
  register formats, which causes the metric increases of this commit.
  
  The subtle aspects of the implementation are outlined in
  Note [Register formats in liveness analysis] in GHC.CmmToAsm.Reg.Liveness.
  
  Fixes #26411 #26611
  
  -------------------------
  Metric Increase:
      T12707
      T26425
      T3294
  -------------------------
  

• c2e83339
  by sheaf at 2025-12-18T13:18:19-05:00

  Register allocator: reload at same format as spill
  
  This commit ensures that if we spill a register onto the stack at a
  given format, we then always reload the register at this same format.
  
  This ensures we don't end up in a situation where we spill F64x2 but end
  up only reloading the lower F64. This first reload would make us believe
  the whole data is in a register, thus silently losing the upper 64 bits
  of the spilled register's contents.
  
  Fixes #26526
  

• 55ab583b
  by sheaf at 2025-12-18T13:18:19-05:00

  Register allocation: writes redefine format
  
  As explained in Note [Allocated register formats] in GHC.CmmToAsm.Reg.Linear,
  we consider all writes to redefine the format of the register.
  
  This ensures that in a situation such as
  
    movsd .Ln6m(%rip),%v1
    shufpd $0,%v1,%v1
  
  we properly consider the broadcast operation to change the format of %v1
  from F64 to F64x2.
  
  This completes the fix to #26411 (test in T26411b).
  

• 951402ed
  by Vladislav Zavialov at 2025-12-18T13:19:05-05:00

  Parser: improve mkModuleImpExp, remove checkImportSpec
  
  1. The `mkModuleImpExp` helper now knows whether it is processing an import or
     export list item, and uses this information to produce a more accurate error
     message for `import M (T(..,x))` with PatternSynonyms disabled.
     The old message incorrectly referred to this case as an export form.
  
  2. The `checkImportSpec` helper is removed in favor of more comprehensive error
     checking in `mkModuleImpExp`.
  
  3. Additionaly, the invariants of `ImpExpList` and `ImpExpAllWith` have been
     made more explicit in the comments and assertions (calls to 'panic').
  
  Test case: import-syntax-no-ext
  

• 47d83d96
  by Vladislav Zavialov at 2025-12-18T13:19:06-05:00

  Subordinate namespace-specified wildcards (#25901)
  
  Add support for subordinate namespace-specified wildcards
  `X(type ..)` and `X(data ..)` to import and export lists.
  
  Examples:
    import M (Cls(type ..))  -- imports Cls and all its associated types
    import M (Cls(data ..))  -- imports Cls and all its methods
    module M (R(data ..), C(type ..)) where
      -- exports R and all its data constructors and record fields;
      -- exports C and all its associated types, but not its methods
  
  The scope of this change is limited to the case where the wildcard is the only
  subordinate import/export item, whereas the more complex forms `X(type .., f)`
  or `X(type .., data ..)` are unsupported and raise the newly introduced
  PsErrUnsupportedExplicitNamespace error. This restriction may be lifted later.
  
  Summary of the changes:
  
  1. Refactor IEThingAll to store its extension field XIEThingAll as a record
     IEThingAllExt instead of a tuple.
  
  2. Extend the AST by adding a NamespaceSpecifier field to IEThingAllExt,
     representing an optional namespace specifier `type` or `data` in front
     of a subordinate wildcard `X(..)`.
  
  3. Extend the grammar in Parser.y with productions for `type ..` and `data ..`
     in subordinate import/export items.
  
  4. Introduce `filterByNamespaceGREs` to filter [GlobalRdrElt] by a
     NamespaceSpecifier; use it in `filterImports` and `exports_from_avail`
     to account for the namespace specifier in IEThingAll.
  
  5. Improve diagnostics by storing more information in DodgyImportsEmptyParent
     and DodgyExportsEmptyParent.
  
  Test cases:
    T25901_sub_e   T25901_sub_f   T25901_sub_g   T25901_sub_a
    T25901_sub_b   T25901_sub_c   T25901_sub_d   T25901_sub_w
    DodgyImports02 DodgyImports03 DodgyImports04
  

• eac418bb
  by Recursion Ninja at 2025-12-18T13:19:48-05:00

  Removing the 'Data' instance for 'InstEnv'.
  
  The 'Data' instance is blocking work on Trees that Grow, and the
  'Data' instance seem to have been added without a clear purpose.
  

• e920e038
  by Recursion Ninja at 2025-12-18T13:19:48-05:00

  'Decouple Language.Haskell.Syntax.Decls' from 'GHC.Unit.Module.Warnings'
  

• bd38b76c
  by Cheng Shao at 2025-12-18T13:20:31-05:00

  testsuite: improve coverage of foundation test
  
  This patch refactors the `foundation` test a bit to improve coverage:
  
  - Instead of using a hard-coded seed, a random seed is now taken from
    the command line, and printed upon test failure. This improves test
    coverage over many future CI runs, and shall a failure occur, the
    seed is available in the CI log for local reproduction.
  - The iterations count is bumped to 1000 instead of 100, similar to
    the bump in `test-primops`. Runtime timeout is bumped 2x just to be
    safe.
  - Improve `newLCGGen` by using non-atomic loads/stores on a
    `MutableByteArray#` for storing mutable `Word64`, this test doesn't
    use parallelism in the first place
  - Fixed a few compiler warnings and removed redundant pragmas and
    imports
  
  Co-authored-by: Codex <codex@openai.com>
  

• 3995187c
  by Sylvain Henry at 2025-12-18T13:21:45-05:00

  Doc: document -pgmi "" (#26634)
  

• 5729418c
  by Cheng Shao at 2025-12-18T13:22:29-05:00

  rts: use __builtin_mul_overflow for hs_mulIntMayOflo
  
  This patch uses `__builtin_mul_overflow` to implement
  `hs_mulIntMayOflo`. This is a GNU C checked arithmetic builtin
  function supported by gcc/clang, is type-generic so works for both
  32-bit/64-bit, and makes the code both more efficient and easier to
  read/maintain than the previous hand rolled logic.
  

• 1ca4b49a
  by Cheng Shao at 2025-12-18T13:23:11-05:00

  compiler/rts: fix ABI mismatch in barf() invocations
  
  This patch fixes a long-standing issue of ABI mismatch in `barf()`
  invocations, both in compiler-emitted code and in hand written Cmm
  code:
  
  - In RTS, we have `barf()` which reports a fatal internal error
    message and exits the program.
  - `barf()` is a variadic C function! When used as a callee of a
    foreign call with `ccall` calling convention instead of `capi`,
    there is an ABI mismatch between the caller and the callee!
  - Unfortunately, both the compiler and the Cmm sources contain many
    places where we call `barf()` via `ccall` convention!! Like, when
    you write `foreign "C" barf("foo object (%p) entered!", R1)`, it
    totally doesn't do what you think it'll do at all!! The second
    argument `R1` is not properly passed in `va_list`, and the behavior
    is completely undefined!!
  - Even more unfortunately, this issue has been sitting around long
    enough because the ABI mismatch is subtle enough on normie platforms
    like x64 and arm64.
  - But there are platforms like wasm32 that are stricter about ABI, and
    the broken `barf()` invocations already causes trouble for wasm
    backend: we had to use ugly hacks like `barf(errmsg, NULL)` to make
    `wasm-ld` happy, and even with this band-aid, compiler-generated
    `barf()` invocations are still broken, resulting in regressions in
    certain debug-related functionality, e.g. `-dtag-inference-checks`
    is broken on wasm32 (#22882).
  
  This patch properly fixes the issue:
  
  - We add non-variadic `barf` wrappers in the RTS that can be used as
    `ccall` callees
  - Both the compiler `emitBarf` logic and the hand-written Cmm are
    changed to call these wrappers
  - `emitBarf` now also properly annotates the foreign call as
    `CmmNeverReturns` to indicate it's a noreturn call to enable more
    efficient code generation
  
  `-dtag-inference-checks` now works on wasm. Closes #22882.
  
  Co-authored-by: Codex <codex@openai.com>
  

• b3dd23b9
  by Vilim Lendvaj at 2025-12-18T13:23:57-05:00

  Remove outdated comment
  
  The Traversable instance for ZipList is no longer in
  GHC.Internal.Data.Traversable. In fact, it is right below this very comment.
  

• 9a9c2f03
  by Cheng Shao at 2025-12-18T13:24:39-05:00

  compiler: remove unused OtherSection logic
  
  This patch removes the OtherSection logic in Cmm, given it's never
  actually used by any of our backends.
  

• 91edd292
  by Wolfgang Jeltsch at 2025-12-19T03:18:19-05:00

  Remove unused known-key and name variables for generics
  
  This removes the known-key and corresponding name variables for `K1`,
  `M1`, `R`, `D`, `C`, `S`, and `URec` from `GHC.Generics`, as they are
  apparently nowhere used in GHC’s source code.
  

• 73ee7e38
  by Wolfgang Jeltsch at 2025-12-19T03:19:02-05:00

  Remove unused known keys and names for generics classes
  
  This removes the known-key and corresponding name variables for
  `Datatype`, `Constructor`, and `Selector` from `GHC.Generics`, as they
  are apparently nowhere used in GHC’s source code.
  

• f69c5f14
  by Cheng Shao at 2025-12-19T03:19:45-05:00

  wasm: fix handling of ByteArray#/MutableByteArray# arguments in JSFFI imports
  
  This patch fixes the handling of ByteArray#/MutableByteArray#
  arguments in JSFFI imports, see the amended note and manual for
  explanation. Also adds a test to witness the fix.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 224446a2
  by Cheng Shao at 2025-12-20T07:49:54-05:00

  rts: workaround -Werror=maybe-uninitialized false positives
  
  In some cases gcc might report -Werror=maybe-uninitialized that we
  know are false positives, but need to workaround it to make validate
  builds with -Werror pass.
  

• 251ec087
  by Cheng Shao at 2025-12-20T07:49:54-05:00

  hadrian: use -Og as C/C++ optimization level when debugging
  
  This commit enables -Og as optimization level when compiling the debug
  ways of rts. According to gcc documentation
  (https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-Og),
  -Og is a better choice than -O0 for producing debuggable code. It's
  also supported by clang as well, so it makes sense to use it as a
  default for debugging. Also add missing -g3 flag to C++ compilation
  flags in +debug_info flavour transformer.
  

• fb586c67
  by Cheng Shao at 2025-12-20T07:50:36-05:00

  compiler: replace DList with OrdList
  
  This patch removes `DList` logic from the compiler and replaces it
  with `OrdList` which also supports O(1) concatenation and should be
  more memory efficient than the church-encoded `DList`.
  

• 8149c987
  by Cheng Shao at 2025-12-20T17:06:51-05:00

  hadrian: add with_profiled_libs flavour transformer
  
  This patch adds a `with_profiled_libs` flavour transformer to hadrian
  which is the exact opposite of `no_profiled_libs`. It adds profiling
  ways to stage1+ rts/library ways, and doesn't alter other flavour
  settings. It is useful when needing to test profiling logic locally
  with a quick flavour.
  

• 746b18cd
  by Cheng Shao at 2025-12-20T17:06:51-05:00

  hadrian: fix missing profiled dynamic libraries in profiled_ghc
  
  This commit fixes the profiled_ghc flavour transformer to include
  profiled dynamic libraries as well, since they're supported by GHC
  since !12595.
  

• 4dd7e3b9
  by Cheng Shao at 2025-12-20T17:07:33-05:00

  ci: set http.postBuffer to mitigate perf notes timeout on some runners
  
  This patch sets http.postBuffer to mitigate the timeout when fetching
  perf notes on some runners with slow internet connection. Fixes #26684.
  

• bc36268a
  by Wolfgang Jeltsch at 2025-12-21T16:23:24-05:00

  Remove unused known keys and names for type representations
  
  This removes the known-key and corresponding name variables for
  `TrName`, `TrNameD`, `TypeRep`, `KindRepTypeLitD`, `TypeLitSort`, and
  `mkTrType`, as they are apparently nowhere used in GHC’s source code.
  

• ff5050e9
  by Wolfgang Jeltsch at 2025-12-21T16:24:04-05:00

  Remove unused known keys and names for natural operations
  
  This removes the known-key and corresponding name variables for
  `naturalAndNot`, `naturalLog2`, `naturalLogBaseWord`, `naturalLogBase`,
  `naturalPowMod`, `naturalSizeInBase`, `naturalToFloat`, and
  `naturalToDouble`, as they are apparently nowhere used in GHC’s source
  code.
  

• 424388c2
  by Wolfgang Jeltsch at 2025-12-21T16:24:45-05:00

  Remove the unused known key and name for `Fingerprint`
  
  This removes the variables for the known key and the name of the
  `Fingerprint` data constructor, as they are apparently nowhere used in
  GHC’s source code.
  

• a1ed86fe
  by Wolfgang Jeltsch at 2025-12-21T16:25:26-05:00

  Remove the unused known key and name for `failIO`
  
  This removes the variables for the known key and the name of the
  `failIO` operation, as they are apparently nowhere used in GHC’s source
  code.
  

• b8220daf
  by Wolfgang Jeltsch at 2025-12-21T16:26:07-05:00

  Remove the unused known key and name for `liftM`
  
  This removes the variables for the known key and the name of the `liftM`
  operation, as they are apparently nowhere used in GHC’s source code.
  

• eb0628b1
  by Wolfgang Jeltsch at 2025-12-21T16:26:47-05:00

  Fix the documentation of `hIsClosed`
  

• db1ce858
  by sheaf at 2025-12-22T17:11:17-05:00

  Do deep subsumption when computing valid hole fits
  
  This commit makes a couple of improvements to the code that
  computes "valid hole fits":
  
    1. It uses deep subsumption for data constructors.
       This matches up the multiplicities, as per
       Note [Typechecking data constructors].
       This fixes #26338 (test: LinearHoleFits).
  
    2. It now suggests (non-unidirectional) pattern synonyms as valid
       hole fits. This fixes #26339 (test: PatSynHoleFit).
  
    3. It uses 'stableNameCmp', to make the hole fit output deterministic.
  
  -------------------------
  Metric Increase:
      hard_hole_fits
  -------------------------
  

• 72ee9100
  by sheaf at 2025-12-22T17:11:17-05:00

  Speed up hole fits with a quick pre-test
  
  This speeds up the machinery for valid hole fits by doing a small
  check to rule out obviously wrong hole fits, such as:
  
    1. A hole fit identifier whose type has a different TyCon at the head,
       after looking through foralls and (=>) arrows, e.g.:
          hole_ty = Int
          cand_ty = Maybe a
       or
          hole_ty = forall a b. a -> b
          cand_ty = forall x y. Either x y
    2. A hole fit identifier that is not polymorphic when the hole type
       is polymorphic, e.g.
         hole_ty = forall a. a -> a
         cand_ty = Int -> Int
  
  -------------------------
  Metric Decrease:
      hard_hole_fits
  -------------------------
  

• 30e513ba
  by Cheng Shao at 2025-12-22T17:12:00-05:00

  configure: remove unused win32-tarballs.md5sum
  
  This patch removes the unused `win32-tarballs.md5sum` file from the
  tree. The current mingw tarball download logic in
  `mk/get-win32-tarballs.py` fetches and checks against `SHA256SUM` from
  the same location where the tarballs are fetched, and this file has
  been unused for a few years.
  

• a2d52b3b
  by Wolfgang Jeltsch at 2025-12-23T04:47:33-05:00

  Add an operation `System.IO.hGetNewlineMode`
  
  This commit also contains some small code and documentation changes for
  related operations, for the sake of consistency.
  

• b26d134a
  by Cheng Shao at 2025-12-23T04:48:15-05:00

  rts: opportunistically reclaim slop space in shrinkMutableByteArray#
  
  Previously, `shrinkMutableByteArray#` shrinks a `MutableByteArray#`
  in-place by assigning the new size to it, and zeroing the extra slop
  space. That slop space is not reclaimed and wasted. But it's often the
  case that we allocate a `MutableByteArray#` upfront, then shrink it
  shortly after, so the `MutableByteArray#` closure sits right at the
  end of a nursery block; this patch identifies such chances, and also
  shrink `bd->free` if possible, reducing heap space fragmentation.
  
  Co-authored-by: Codex <codex@openai.com>
  
  -------------------------
  Metric Decrease:
      T10678
  -------------------------
  

• c72ddabf
  by Cheng Shao at 2025-12-23T16:13:23-05:00

  hadrian: fix bootstrapping with ghc-9.14
  
  This patch fixes bootstrapping GHC with ghc-9.14, tested locally with
  ghc-9.14.1 release as bootstrapping GHC.
  

• 0fd6d8e4
  by Cheng Shao at 2025-12-23T16:14:05-05:00

  hadrian: pass -keep-tmp-files to test ghc when --keep-test-files is enabled
  
  This patch makes hadrian pass `-keep-tmp-files` to test ghc when
  `--keep-test-files` is enabled, so you can check the ghc intermediate
  files when debugging certain test failures. Closes #26688.
  

• 81d10134
  by Cheng Shao at 2025-12-24T06:11:52-05:00

  configure: remove dead code in configure scripts
  
  This patch removes dead code in our configure scripts, including:
  
  - Variables and auto-detected programs that are not used
  - autoconf functions that are not used, or export a variable that's
    not used
  - `AC_CHECK_HEADERS` invocations that don't have actual corresponding
    `HAVE_XXX_H` usage
  - Other dead code (e.g. stray `AC_DEFUN()`)
  
  Co-authored-by: Codex <codex@openai.com>
  

• fb1381c3
  by Wolfgang Jeltsch at 2025-12-24T06:12:34-05:00

  Remove unused known keys and names for list operations
  
  This removes the known-key and corresponding name variables for
  `concat`, `filter`, `zip`, and `(++)`, as they are apparently nowhere
  used in GHC’s source code.
  

• 7b9c20f4
  by Recursion Ninja at 2025-12-24T10:35:36-05:00

  Decoupling Language.Haskell.Syntax.Binds from GHC.Types.Basic
  by transferring InlinePragma types between the modules.
  
    * Moved InlinePragma data-types to Language.Haskell.Syntax.Binds.InlinePragma
  
    * Partitioned of Arity type synonyms to GHC.Types.Arity
  
    * InlinePragma is now extensible via Trees That Grow
  
    * Activation is now extensible via Trees That Grow
  
    * Maybe Arity change to more descriptive InlineSaturation data-type
  
    * InlineSaturation information removed from InlinePragma during GHS parsing pass
  
    * Cleaned up the exposed module interfaces of the new modules
  

• a3afae0c
  by Simon Peyton Jones at 2025-12-25T15:26:36-05:00

  Check for rubbish literals in Lint
  
  Addresses #26607.
  
  See new Note [Checking for rubbish literals] in GHC.Core.Lint
  

• 8a317b6f
  by Aaron Allen at 2026-01-01T03:05:15-05:00

  [#26183] Associated Type Iface Fix
  
  When determining "extras" for class decl interface entries, axioms for
  the associated types need to included so that dependent modules will be
  recompiled if those axioms change.
  
  resolves #26183
  

• ae1aeaab
  by Cheng Shao at 2026-01-01T03:06:32-05:00

  testsuite: run numeric tests with optasm when available
  
  This patch adds the `optasm` extra way to nueric tests when NCG is
  available. Some numeric bugs only surface with optimization, omitting
  this can hide these bugs and even make them slip into release! (e.g. #26711)
  

• 6213bb57
  by maralorn at 2026-01-02T16:30:32+01:00

  GHC.Internal.Exception.Context: Fix comment
  
  on addExceptionAnnotation

• b820ff50
  by Janis Voigtlaender at 2026-01-05T02:43:18-05:00

  GHC.Internal.Control.Monad.replicateM: Fix comment
  

• a8a94aad
  by Cheng Shao at 2026-01-05T16:24:04-05:00

  hadrian: drops unused PE linker script for windows
  
  This patch drops unused PE linker script for windows in the
  `MergeObjects` builder of hadrian. The linker script is used for
  merging object files into a single `HS*.o` object file and undoing the
  effect of split sections, when building the "ghci library" object
  file. However, we don't build the ghci library on windows, and this
  code path is actually unreachable.
  

• 53038ea9
  by Cheng Shao at 2026-01-05T16:24:04-05:00

  hadrian: drop unused logic for building ghci libraries
  
  This patch drops the unused logic for building ghci libraries in
  hadrian:
  
  - The term "ghci library" refers to an optional object file per
    library `HS*.o`, which is merged from multiple object files in that
    library using the `MergeObjects` builder in hadrian.
  - The original rationale of having a ghci library object, in addition
    to normal archives, was to speedup ghci loading, since the combined
    object is linked with a linker script to undo the effects of
    `-fsplit-sections` to reduce section count and make it easier for
    the RTS linker to handle.
  - However, most GHC builds enable `dynamicGhcPrograms` by default, in
    such cases the ghci library would already not be built.
  - `dynamicGhcPrograms` is disabled on Windows, but still we don't
    build the ghci library due to lack of functioning merge objects
    command.
  - The only case that we actually build ghci library objects, are
    alpine fully static bindists. However, for other reasons, split
    sections is already disabled for fully static builds anyway!
  - There will not be any regression if the ghci library objects are
    absent from a GHC global libdir when `dynamicGhcPrograms` is
    disabled. The RTS linker can already load the archives without any
    issue.
  
  Hence the removal. We now forcibly disable ghci libraries for all
  Cabal components, and rip out all logic related to `MergeObjects` and
  ghci libraries in hadrian. This also nicely cleans up some old todos
  and fixmes that are no longer relevant.
  
  Note that MergeObjects in hadrian is not the same thing as merge
  objects in the GHC driver. The latter is not affected by this patch.
  
  -------------------------
  Metric Decrease:
      libdir
  -------------------------
  
  Co-authored-by: Codex <codex@openai.com>
  

• 8f209336
  by Simon Jakobi at 2026-01-05T16:24:48-05:00

  User's guide: Fix link to language extensions
  
  Instead of linking to haddocks, it seemed more useful to link
  to the extension overview in the user's guide.
  
  Closes #26614.
  

• 0b7df6db
  by Simon Peyton Jones at 2026-01-06T09:32:23-05:00

  Improved fundeps for closed type families
  
  The big payload of this commit is to execute the plan suggested
  in #23162, by improving the way that we generate functional
  dependencies for closed type families.
  
  It is all described in Note [Exploiting closed type families]
  
  Most of the changes are in GHC.Tc.Solver.FunDeps
  
  Other small changes
  
  * GHC.Tc.Solver.bumpReductionDepth.  This function brings together the code that
     * Bumps the depth
     * Checks for overflow
    Previously the two were separated, sometimes quite widely.
  
  * GHC.Core.Unify.niFixSubst: minor improvement, removing an unnecessary
    itraetion in the base case.
  
  * GHC.Core.Unify: no need to pass an InScopeSet to
    tcUnifyTysForInjectivity. It can calculate one for itself; and it is
    never inspected anyway so it's free to do so.
  
  * GHC.Tc.Errors.Ppr: slight impovement to the error message for
    reduction-stack overflow, when a constraint (rather than a type) is
    involved.
  
  * GHC.Tc.Solver.Monad.wrapUnifier: small change to the API
  

• fde8bd88
  by Simon Peyton Jones at 2026-01-06T09:32:23-05:00

  Add missing (KK4) to kick-out criteria
  
  There was a missing case in kick-out that meant we could fail
  to solve an eminently-solvable constraint.
  
  See the new notes about (KK4)
  

• 00082844
  by Simon Peyton Jones at 2026-01-06T09:32:23-05:00

  Some small refactorings of error reporting in the typechecker
  
  This is just a tidy-up commit.
  
  * Add ei_insoluble to ErrorItem, to cache insolubility.
    Small tidy-up.
  
  * Remove `is_ip` and `mkIPErr` from GHC.Tc.Errors; instead enhance mkDictErr
    to handle implicit parameters.  Small refactor.
  

• fe4cb252
  by Simon Peyton Jones at 2026-01-06T09:32:24-05:00

  Improve recording of insolubility for fundeps
  
  This commit addresses #22652, by recording when the fundeps for
  a constraint are definitely insoluble.  That in turn improves the
  perspicacity of the pattern-match overlap checker.
  
  See Note [Insoluble fundeps]
  

• df0ffaa5
  by Simon Peyton Jones at 2026-01-06T09:32:24-05:00

  Fix a buglet in niFixSubst
  
  The MR of which this is part failed an assertion check extendTvSubst
  because we extended the TvSubst with a CoVar.  Boo.
  
  This tiny patch fixes it, and adds the regression test from #13882
  that showed it up.
  

• 3d6aba77
  by konsumlamm at 2026-01-06T09:33:16-05:00

  Fix changelog formatting

• 69e0ab59
  by Cheng Shao at 2026-01-06T19:37:56-05:00

  compiler: add targetHasRTSWays function
  
  This commit adds a `targetHasRTSWays` util function in
  `GHC.Driver.Session` to query if the target RTS has a given Ways (e.g.
  WayThreaded).
  

• 25a0ab94
  by Cheng Shao at 2026-01-06T19:37:56-05:00

  compiler: link on-demand external interpreter with threaded RTS
  
  This commit makes the compiler link the on-demand external interpreter
  program with threaded RTS if it is available in the target RTS ways.
  This is a better default than the previous single-threaded RTS, and it
  enables the external interpreter to benefit from parallelism when
  deserializing CreateBCOs messages.
  

• 92404a2b
  by Cheng Shao at 2026-01-06T19:37:56-05:00

  hadrian: link iserv with threaded RTS
  
  This commit makes hadrian link iserv with threaded RTS if it's
  available in the RTS ways. Also cleans up the iserv main C program
  which can be replaced by the `-fkeep-cafs` link-time option.
  

• a20542d2
  by Cheng Shao at 2026-01-06T19:38:38-05:00

  ghc-internal: remove unused GMP macros
  
  This patch removes unused GMP related macros from `ghc-internal`. The
  in-tree GMP version was hard coded and outdated, but it was not used
  anywhere anyway.
  

• 4079dcd6
  by Cheng Shao at 2026-01-06T19:38:38-05:00

  hadrian: fix in-tree gmp configure error on newer c compilers
  
  Building in-tree gmp on newer c compilers that default to c23 fails at
  configure stage, this patch fixes it, see added comment for
  explanation.
  

• 414d1fe1
  by Cheng Shao at 2026-01-06T19:39:20-05:00

  compiler: fix LLVM backend pdep/pext handling for i386 target
  
  This patch fixes LLVM backend's pdep/pext handling for i386 target,
  and also removes non-existent 128/256/512 bit hs_pdep/hs_pext callees.
  See amended note for more explanation. Fixes #26450.
  
  Co-authored-by: Codex <codex@openai.com>
  

• c7f6fba3
  by Cheng Shao at 2026-01-06T19:39:20-05:00

  ci: remove allow_failure flag for i386 alpine job
  
  The LLVM codegen issue for i386 has been fixed, and the i386 alpine
  job should pass now. This commit removes the allow_failure flag so
  that other i386 regressions in the future are signaled more timely.
  

• 52d00c05
  by Simon Peyton Jones at 2026-01-07T10:24:21-05:00

  Add missing InVar->OutVar lookup in SetLevels
  
  As #26681 showed, the SetLevels pass was failing to map an InVar to
  an OutVar.  Very silly!  I'm amazed it hasn't broken before now.
  
  I have improved the type singatures (to mention InVar and OutVar)
  so it's more obvious what needs to happen.
  

• ab0a5594
  by Cheng Shao at 2026-01-07T10:25:04-05:00

  hadrian: drop deprecated pkgHashSplitObjs code path
  
  This patch drops deprecated `pkgHashSplitObjs` code path from hadrian,
  since GHC itself has removed split objs support many versions ago and
  this code path is unused.
  

• bb3a2ba1
  by Cheng Shao at 2026-01-07T10:25:44-05:00

  hadrian: remove linting/assertion in quick-validate flavour
  
  The `quick-validate` flavour is meant for testing ghc and passing the
  testsuite locally with similar settings to `validate` but faster. This
  patch removes the linting/assertion overhead in `quick-validate` to
  improve developer experience. I also took the chance to simplify
  redundant logic of rts/library way definition in `validate` flavour.
  

• 7971f5dd
  by Cheng Shao at 2026-01-07T10:26:26-05:00

  deriveConstants: clean up unused constants
  
  This patch cleans up unused constants from `deriveConstants`, they are
  not used by C/Cmm code in the RTS, nor compiler-generated code.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 4df96993
  by Cheng Shao at 2026-01-07T10:27:08-05:00

  hadrian: pass -fno-omit-frame-pointer with +debug_info
  
  This patch adds `-fno-omit-frame-pointer` as C/C++ compilation flag
  when compiling with `+debug_info` flavour transformer. It's a sane
  default when you care about debugging and reliable backtraces, and
  makes debugging/profiling with bpf easier.
  

• 8a3900a3
  by Aaron Allen at 2026-01-07T10:27:57-05:00

  [26705] Include TyCl instances in data fam iface entry
  
  Ensures dependent modules are recompiled when the class instances for a
  data family instance change.
  
  resolves #26705
  

• a0b980af
  by Cheng Shao at 2026-01-07T10:28:38-05:00

  hadrian: remove unused Hp2Ps/Hpc builders
  
  This patch removes the Hp2Ps/Hpc builders from hadrian, they are
  unused in the build system. Note that the hp2ps/hpc programs are still
  built and not affected.
  

• 50a58757
  by Cheng Shao at 2026-01-07T10:29:20-05:00

  hadrian: only install js files to libdir for wasm/js targets
  
  There are certain js files required for wasm/js targets to work, and
  previously hadrian would install those js files to libdir
  unconditionally on other targets as well. This could be a minor
  annoyance for packagers especially when the unused js files contain
  shebangs that interfere with the packaging process. This patch makes
  hadrian only selectively install the right js files for the right
  targets.
  
  Co-authored-by: Codex <codex@openai.com>
  

• da40e553
  by Simon Peyton Jones at 2026-01-07T10:30:00-05:00

  Add flavour transformer assertions_stage1
  
  This allows us to enable -DDEBUG assertions in the stage1 compiler
  

• ec3cf767
  by Cheng Shao at 2026-01-08T06:24:31-05:00

  make: remove unused Makefiles from legacy make build system
  
  This patch removes unused Makefiles from legacy make build system; now
  they are never used by hadrian in any way, and they already include
  common boilerplate mk files that are long gone in the make build
  system removal, hence the housecleaning.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 04ea3f83
  by Cheng Shao at 2026-01-08T06:25:13-05:00

  compiler: use -O3 as LLVM optimization level for ghc -O2
  
  The GHC driver clamps LLVM optimization level to `-O2` due to LLVM
  crashes, but those were historical issues many years ago that are no
  longer relevant for LLVM versions we support today. This patch changes
  the driver to use `-O3` as LLVM optimization level when compiling with
  `-O2`, which is a better default when we're willing to trade
  compilation time for faster generated code.
  

• 472df471
  by Peter Trommler at 2026-01-08T13:28:54-05:00

  Use half-word literals in info tables
  
  With this commit info tables are mapped to the same assembler code
  on big-endian and little-endian platforms.
  
  Fixes #26579.
  

• 393f9c51
  by Simon Peyton Jones at 2026-01-08T13:29:35-05:00

  Refactor srutOkForBinderSwap
  
  This MR does a small refactor:
  
  * Moves `scrutOkForBinderSwap` and `BinderSwapDecision`
    to GHC.Core.Utils
  
  * Inverts the sense of the coercion it returns, which makes
    more sense
  
  No effect on behaviour
  

• ad76fb0f
  by Simon Peyton Jones at 2026-01-08T13:29:36-05:00

  Improve case merging
  
  This small MR makes case merging happen a bit more often than
  it otherwise could, by getting join points out of the way.
  
  See #26709 and GHC.Core.Utils
    Note [Floating join points out of DEFAULT alternatives]
  

• 4c9395f5
  by Cheng Shao at 2026-01-08T13:30:16-05:00

  hadrian: remove broken hsc2hs flag when cross compiling to windows
  
  This patch removes the `--via-asm` hsc2hs flag when cross compiling to
  windows. With recent llvm-mingw toolchain, it would fail with:
  
  ```
  x86_64-w64-mingw32-hsc2hs: Cannot combine instructions: [Quad 8,Long 4,Long 241,Ref ".Ltmp1-.Ltmp0"]
  ```
  
  The hsc2hs default `--cross-compile` logic is slower but works.
  

• 71fdef55
  by Simon Peyton Jones at 2026-01-08T13:30:57-05:00

  Try harder to keep the substitution empty
  
  Avoid unnecessary cloning of variables in the Simplifier.
  
  Addresses #26724,
  
  See Note [Keeping the substitution empty]
  
  We get some big wins in compile time
  
  Metrics: compile_time/bytes allocated
  -------------------------------------
                                           Baseline
                      Test    Metric          value      New value Change
  ----------------------------------------------------------------------------
  CoOpt_Singletons(normal) ghc/alloc    721,544,088    692,174,216  -4.1% GOOD
       LargeRecord(normal) ghc/alloc  1,268,031,157  1,265,168,448  -0.2%
            T14766(normal) ghc/alloc    918,218,533    688,432,296 -25.0% GOOD
            T15703(normal) ghc/alloc    318,103,629    306,638,016  -3.6% GOOD
            T17836(normal) ghc/alloc    419,174,584    418,400,824  -0.2%
            T18478(normal) ghc/alloc    471,042,976    470,261,376  -0.2%
            T20261(normal) ghc/alloc    573,387,162    563,663,336  -1.7%
            T24984(normal) ghc/alloc     87,832,666     87,636,168  -0.2%
            T25196(optasm) ghc/alloc  1,103,284,040  1,101,376,992  -0.2%
    hard_hole_fits(normal) ghc/alloc    224,981,413    224,608,208  -0.2%
  
                 geo. mean                                          -0.3%
                 minimum                                           -25.0%
                 maximum                                            +0.1%
  
  Metric Decrease:
      CoOpt_Singletons
      T14766
      T15703
  

• 30341168
  by Simon Peyton Jones at 2026-01-08T13:31:38-05:00

  Add regression test for #24867
  

• 1ac1a541
  by Julian Ospald at 2026-01-09T02:48:53-05:00

  Support statically linking executables properly
  
  Fixes #26434
  
  In detail, this does a number of things:
  * Makes GHC aware of 'extra-libraries-static' (this changes the package
    database format).
  * Adds a switch '-static-external' that will honour 'extra-libraries-static'
    to link external system dependencies statically.
  * Adds a new field to settings/targets: "ld supports verbatim namespace".
    This field is used by '-static-external' to conditionally use '-l:foo.a'
    syntax during linking, which is more robust than trying to find the
    absolute path to an archive on our own.
  * Adds a switch '-fully-static' that is meant as a high-level interface
    for e.g. cabal. This also honours 'extra-libraries-static'.
  
  This also attempts to clean up the confusion around library search directories.
  At the moment, we have 3 types of directories in the package database
  format:
  * library-dirs
  * library-dirs-static
  * dynamic-library-dirs
  
  However, we only have two types of linking: dynamic or static. Given the
  existing logic in 'mungeDynLibFields', this patch assumes that
  'library-dirs' is really just nothing but a fallback and always
  prefers the more specific variants if they exist and are non-empty.
  
  Conceptually, we should be ok with even just one search dirs variant.
  Haskell libraries are named differently depending on whether they're
  static or dynamic, so GHC can conveniently pick the right one depending
  on the linking needs. That means we don't really need to play tricks
  with search paths to convince the compiler to do linking as we want it.
  For system C libraries, the convention has been anyway to place static and
  dynamic libs next to each other, so we need to deal with that issue
  anyway and it is outside of our control. But this is out of the scope
  of this patch.
  
  This patch is backwards compatible with cabal. Cabal should however
  be patched to use the new '-fully-static' switch.
  

• ad3c808d
  by Julian Ospald at 2026-01-09T02:48:53-05:00

  Warn when "-dynamic" is mixed with "-staticlib"
  

• 322dd672
  by Matthew Pickering at 2026-01-09T02:49:35-05:00

  rts: Use INFO_TABLE_CONSTR for stg_dummy_ret_closure
  
  Since the closure type is CONSTR_NOCAF, we need to use INFO_TABLE_CONSTR
  to populate the constructor description field (this crashes ghc-debug
  when decoding AP_STACK frames sometimes)
  
  Fixes #26745
  

• 039bac4c
  by Ben Gamari at 2026-01-09T20:22:16-05:00

  ghc-internal: Move STM utilities out of GHC.Internal.Conc.Sync
  
  This is necessary to avoid an import cycle on Windows when importing
  `GHC.Internal.Exception.Context` in `GHC.Internal.Conc.Sync`.
  
  On the road to address #25365.
  

• 8c389e8c
  by Ben Gamari at 2026-01-09T20:22:16-05:00

  base: Capture backtrace from throwSTM
  
  Implements core-libraries-committee#297.
  
  Fixes #25365.
  

• e1ce1fc3
  by Ben Gamari at 2026-01-09T20:22:16-05:00

  base: Annotate rethrown exceptions in catchSTM with WhileHandling
  
  Implements core-libraries-committee#298
  

• c4ebdbdf
  by Cheng Shao at 2026-01-09T20:23:06-05:00

  compiler: make getPrim eagerly evaluate its result
  
  This commit makes `GHC.Utils.Binary.getPrim` eagerly evaluate its
  result, to avoid accidental laziness when future patches build other
  binary parsers using `getPrim`.
  

• 66a0c4f7
  by Cheng Shao at 2026-01-09T20:23:06-05:00

  compiler: implement fast get/put for Word16/Word32/Word64
  
  Previously, `GHC.Utils.Binary` contains `get`/`put` functions for
  `Word16`/`Word32`/`Word64` which always loads and stores them as
  big-endian words at a potentially unaligned address. The previous
  implementation is based on loads/stores of individual bytes and
  concatenating bytes with bitwise operations, which currently cannot be
  fused to a single load/store operation by GHC.
  
  This patch implements fast `get`/`put` functions for
  `Word16`/`Word32`/`Word64` based on a single memory load/store, with
  an additional `byteSwap` operation on little-endian hosts. It is based
  on unaligned load/store primops added since GHC 9.10, and we already
  require booting with at least 9.10, so it's about time to switch to
  this faster path.
  

• 641ec3f0
  by Simon Peyton Jones at 2026-01-09T20:23:55-05:00

  Fix scoping errors in specialisation
  
  Using -fspecialise-aggressively in #26682 showed up a couple of
  subtle errors in the type-class specialiser.
  
  * dumpBindUDs failed to call `deleteCallsMentioning`, resulting in a
    call that mentioned a dictionary that was not in scope.  This call
    has been missing since 2009!
      commit c43c981705ec33da92a9ce91eb90f2ecf00be9fe
      Author: Simon Peyton Jones <simonpj@microsoft.com>
      Date:   Fri Oct 23 16:15:51 2009 +0000
  
    Fixed by re-combining `dumpBindUDs` and `dumpUDs`.
  
  * I think there was another bug involving the quantified type
    variables in polymorphic specialisation. In any case I refactored
    `specHeader` and `spec_call` so that the former looks for the
    extra quantified type variables rather than the latter.  This
    is quite a worthwhile simplification: less code, easier to grok.
  
  Test case in simplCore/should_compile/T26682,
  brilliantly minimised by @sheaf.
  

• 2433e91d
  by Cheng Shao at 2026-01-09T20:24:43-05:00

  compiler: change sectionProtection to take SectionType argument
  
  This commit changes `sectionProtection` to only take `SectionType`
  argument instead of whole `Section`, since it doesn't need the Cmm
  section content anyway, and it can then be called in parts of NCG
  where we only have a `SectionType` in scope.
  

• e5926fbe
  by Cheng Shao at 2026-01-09T20:24:43-05:00

  compiler: change isInitOrFiniSection to take SectionType argument
  
  This commit changes `isInitOrFiniSection` to only take `SectionType`
  argument instead of whole `Section`, since it doesn't need the Cmm
  section content anyway, and it can then be called in parts of NCG
  where we only have a `SectionType` in scope. Also marks it as
  exported.
  

• 244d57d7
  by Cheng Shao at 2026-01-09T20:24:43-05:00

  compiler: fix split sections on windows
  
  This patch fixes split sections on windows by emitting the right
  COMDAT section header in NCG, see added comment for more explanation.
  Fix #26696 #26494.
  
  -------------------------
  Metric Decrease:
      LargeRecord
      T9675
      size_hello_artifact
      size_hello_artifact_gzip
      size_hello_unicode
      size_hello_unicode_gzip
  Metric Increase:
      T13035
  -------------------------
  
  Co-authored-by: Codex <codex@openai.com>
  

• 182f3d0f
  by Cheng Shao at 2026-01-09T20:25:28-05:00

  iserv: add comment about -fkeep-cafs
  

• 49675b69
  by Matthew Craven at 2026-01-09T20:26:14-05:00

  Account for "stupid theta" in demand sig for DataCon wrappers
  
  Fixes #26748.
  

• f3c18890
  by Samuel Thibault at 2026-01-10T15:48:22+01:00

  hurd: Fix getExecutablePath build
  
  3939a8bf93e27 ("GNU/Hurd: Add getExecutablePath support") added using
  /proc/self/exe for GNU/Hurd but missed adding the required imports for
  the corresponding code.
  

• 7f15bd15
  by Samuel Thibault at 2026-01-12T07:16:25-05:00

  Fix the OS string encoding for GNU/Hurd
  
  Following https://github.com/haskell/cabal/pull/9434/files , and as seen
  in the various gnu_HOST_OS usages in the source code, it is expected that
  GNU/Hurd is advertised as "gnu", like the autotools do.
  

• 1db2f240
  by Andrew Lelechenko at 2026-01-12T07:17:06-05:00

  Add since annotation for Data.Bifoldable1
  
  Fixes #26432
  

• e038a383
  by Sven Tennie at 2026-01-12T07:17:49-05:00

  Ignore Windows CI tool directories in Git
  
  Otherwise, we see thousands of changes in `git status` which is very
  confusing to work with.
  

• 023c301c
  by sheaf at 2026-01-13T04:57:30-05:00

  Don't re-use stack slots for growing registers
  
  This commit avoids re-using a stack slot for a register that has grown
  but already had a stack slot.
  
  For example, suppose we have stack slot assigments
  
    %v1 :: FF64 |-> StackSlot 0
    %v2 :: FF64 |-> StackSlot 1
  
  Later, we start using %v1 at a larger format (e.g. F64x2) and we need
  to spill it again. Then we **must not** use StackSlot 0, as a spill
  at format F64x2 would clobber the data in StackSlot 1.
  
  This can cause some fragmentation of the `StackMap`, but that's probably
  OK.
  
  Fixes #26668
  

• d0966e64
  by fendor at 2026-01-13T04:58:11-05:00

  Remove `traceId` from ghc-pkg executable
  

• 20d7efec
  by Simon Peyton Jones at 2026-01-13T12:41:22-05:00

  Make SpecContr rules fire a bit later
  
  See #26615 and Note [SpecConstr rule activation]
  

• 8bc4eb8c
  by Andrew Lelechenko at 2026-01-13T12:42:03-05:00

  Upgrade mtl submodule to 2.3.2
  
  Fixes #26656
  

• c94aaacd
  by Cheng Shao at 2026-01-13T12:42:44-05:00

  compiler: remove iserv and only use on-demand external interpreter
  
  This patch removes `iserv` from the tree completely. Hadrian would no
  longer build or distribute `iserv`, and the GHC driver would use the
  on-demand external interpreter by default when invoked with
  `-fexternal-interpreter`, without needing to specify `-pgmi ""`. This
  has multiple benefits:
  
  - It allows cleanup of a lot of legacy hacks in the hadrian codebase.
  - It paves the way for running cross ghc's iserv via cross emulator
    (#25523), fixing TH/ghci support for cross targets other than
    wasm/js.
  

• c1fe0097
  by Peter Trommler at 2026-01-14T03:54:49-05:00

  PPC NCG: Fix shift right MO code
  
  The shift amount in shift right [arithmetic] MOs is machine word
  width. Therefore remove unnecessary zero- or sign-extending of
  shift amount.
  
  It looks harmless to extend the shift amount argument because the
  shift right instruction uses only the seven lowest bits (i. e. mod 128).
  But now we have a conversion operation from a smaller type to word width
  around a memory load at word width. The types are not matching up but
  there is no check done in CodeGen. The necessary conversion from word
  width down to the smaller width would be translated into a no-op on
  PowerPC anyway. So all seems harmless if it was not for a small
  optimisation in getRegister'.
  
  In getRegister' a load instruction with the smaller width of the
  conversion operation was generated. This loaded the most significant
  bits of the word in memory on a big-endian platform. These bits were
  zero and hence shift right was used with shift amount zero and not one
  as required in test Sized.
  
  Fixes #26519
  

• 2dafc65a
  by Cheng Shao at 2026-01-14T03:55:31-05:00

  Tree-wide cleanup of cygwin logic
  
  GHC has not supported cygwin for quite a few years already, and will
  not resume support in the forseeable future. The only supported
  windows toolchain is clang64/clangarm64 of the msys2 project. This
  patch cleans up the unused cygwin logic in the tree.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 66b96e2a
  by Teo Camarasu at 2026-01-14T03:56:13-05:00

  Set default eventlog-flush-interval to 5s
  
  Resolves #26707
  

• d0254579
  by Andrew Lelechenko at 2026-01-14T03:56:53-05:00

  Document when -maxN RTS option was added
  

• f25e2b12
  by Cheng Shao at 2026-01-14T11:10:39-05:00

  testsuite: remove obsolete --ci option from the testsuite driver
  
  This patch removes the obsolete `--ci` option from the testsuite
  driver: neither the CI scripts nor hadrian ever invokes the testsuite
  driver with `--ci`, and the perf notes are always fetched to the
  `refs/notes/perf` local reference anyway.
  

• 7964763b
  by Julian Ospald at 2026-01-14T11:11:31-05:00

  Fix fetch_cabal
  
  * download cabal if the existing one is of an older version
  * fix FreeBSD download url
  * fix unpacking on FreeBSD
  

• 6b0129c1
  by Julian Ospald at 2026-01-14T11:11:31-05:00

  Bump toolchain in CI
  

• 0f53ccc6
  by Julian Ospald at 2026-01-14T11:11:31-05:00

  Use libffi-clib
  
  Previously, we would build libffi via hadrian
  and bundle it manually with the GHC bindist.
  
  This now moves all that logic out of hadrian
  and allows us to have a clean Haskell package
  to build and link against and ship it without
  extra logic.
  
  This patch still retains the ability to link
  against a system libffi.
  
  The main reason of bundling libffi was that on
  some platforms (e.g. FreeBSD and Mac), system libffi
  is not visible to the C toolchain by default,
  so users would require settings in e.g. cabal
  to be able to compile anything.
  
  This adds the submodule libffi-clib to the repository.
  

• 5e1cd595
  by Peng Fan at 2026-01-14T11:12:26-05:00

  NCG/LA64: add support for la664 micro architecture
  
  Add '-mla664' flag to LA664, which has some new features:
  atomic instructions, dbar hints, etc.
  
  'LA464' is the default so that unrecognized instructions are not
  generated.
  

• c56567ec
  by Simon Peyton Jones at 2026-01-15T23:19:04+00:00

  Add evals for strict data-con args in worker-functions
  
  This fixes #26722, by adding an eval in a worker for
  arguments of strict data constructors, even if the
  function body uses them strictly.
  
  See (WIS1) in Note [Which Ids should be strictified]
  
  I took the opportunity to make substantial improvements in the
  documentation for call-by-value functions.  See especially
     Note [CBV Function Ids: overview] in GHC.Types.Id.Info
     Note [Which Ids should be CBV candidates?] ditto
     Note [EPT enforcement] in GHC.Stg.EnforceEpt
  among others.
  

• 9719ce5d
  by Simon Peyton Jones at 2026-01-15T23:19:04+00:00

  Improve `interestingArg`
  
  This function analyses a function's argument to see if it is
  interesting enough to deserve an inlining discount. Improvements
  for
    * LitRubbish arguments
    * exprIsExpandable arguments
  
  See Note [Interesting arguments] which is substantially rewritten.
  

• 7b616b9f
  by Cheng Shao at 2026-01-16T06:45:00-05:00

  compiler: fix regression when compiling foreign stubs in the rts unit
  
  This patch fixes a regression when compiling foreign stubs in the rts
  unit introduced in 05e25647f72bc102061af3f20478aa72bff6ff6e. A simple
  revert would fix it, but it's better to implement a proper fix with
  comment for better understanding of the underlying problem, see the
  added comment for explanation.
  
  Co-authored-by: Codex <codex@openai.com>
  

• c343ef64
  by Sylvain Henry at 2026-01-16T06:45:51-05:00

  base: remove GHC.JS.Prim.Internal.Build (#23432)
  
  See accepted CLC proposal https://github.com/haskell/core-libraries-committee/issues/329
  

• 29c0aceb
  by Simon Peyton Jones at 2026-01-16T17:18:11-05:00

  Improve newtype unwrapping
  
  Ticket #26746 describes several relatively-minor shortcomings of newtype
  unwrapping.  This MR addresses them, while also (arguably) simplifying
  the code a bit.
  
  See new Note [Solving newtype equalities: overview]
  and     Note [Decomposing newtype equalities]
  and     Note [Eager newtype decomposition]
  and     Note [Even more eager newtype decomposition]
  
  For some reason, on Windows only, runtime allocations decrease for test
  T5205 (from 52k to 48k).  I have not idea why. No change at all on Linux.
  I'm just going to accept the change.  (I saw this same effect in another
  MR so I think it's a fault in the baseline.)
  
  Metric Decrease:
      T5205
  

• 8b59e62c
  by Andreas Klebinger at 2026-01-16T17:18:52-05:00

  testsuite: Widen acceptance window for T5205.
  
  Fixes #26782
  

• 9e5e0234
  by mangoiv at 2026-01-17T06:03:03-05:00

  add a new issue template for getting verified
  
  To reduce spam created by new users, we will in future not grant
  any rights but reporting issues to new users. That is why we will
  have to be able to verify them. The added issue template serves that
  purpose.
  

• b18b2c42
  by Cheng Shao at 2026-01-17T06:03:44-05:00

  llvm: fix split sections for llvm backend
  
  This patch fixes split sections for llvm backend:
  
  - Pass missing `--data-sections`/`--function-sections` flags to
    llc/opt.
  - Use `@llvm.compiler.used` instead of `@llvm.used` to avoid sections
    being unnecessarily retained at link-time.
  
  Fixes #26770.
  
  -------------------------
  Metric Decrease:
      libdir
      size_hello_artifact
      size_hello_unicode
  -------------------------
  
  Co-authored-by: Codex <codex@openai.com>
  

• ebf66f67
  by Cheng Shao at 2026-01-17T13:16:50-05:00

  Update autoconf scripts
  
  Scripts taken from autoconf a2287c3041a3f2a204eb942e09c015eab00dc7dd
  

• 598624b9
  by Andreas Klebinger at 2026-01-17T13:17:32-05:00

  CString.hs: Update incorrect comment.
  
  Fixes #26322
  

• eea2036b
  by Cheng Shao at 2026-01-18T10:00:49-05:00

  libraries: bump haskeline submodule to 0.8.4.1
  
  This patch bumps the haskeline submodule to 0.8.4.1 which includes an
  important fix for an ANSI handling bug on Windows
  (https://github.com/haskell/haskeline/pull/126).
  

• 87d8f6c2
  by Cheng Shao at 2026-01-18T10:01:30-05:00

  hadrian: replace default -H32m/-H64m with -O64M to improve mutator productivity
  
  Most hadrian build flavours pass `-H32m`/`-H64m` to GHC as
  conventional wisdom to improve mutator productivity and reduce GC
  overhead. They were inherited from the legacy Make build system, and
  there used to be make flags to instrument a build process with
  `-Rghc-timing` option to collect GC stats of each GHC run from stderr.
  
  It's time to revisit whether there are better defaults for
  `-H32m`/`-H64m`, and this patch changes it to `-O64M` which indeed
  improves mutator productivity based on real statistics. `-O64M` is
  more aggressive than `-H64m`; it allows the old generation to grow to
  at least 64M before triggering major GC and reduces major GC runs.
  
  The stats of a clean build with `validate` flavour and `-H64m`:
  
  ```
  h64m.log
    matched RTS stat lines: 5499
    sum MUT cpu     : 2400.808 s
    sum GC cpu      : 1378.292 s
    sum MUT elapsed : 2788.253 s
    sum GC elapsed  : 1389.233 s
    GC/MUT cpu ratio     : 0.574 (GC is 57.4% of MUT)
    GC/MUT elapsed ratio : 0.498 (GC is 49.8% of MUT)
    GC fraction of (MUT+GC) cpu     : 36.5%
    GC fraction of (MUT+GC) elapsed : 33.3%
    per-line GC/MUT cpu ratio: median 0.691, p90 1.777
    per-line GC/MUT elapsed ratio: median 0.519, p90 1.081
  ```
  
  The stats of a clean build with `validate` flavour and `-O64M`:
  
  ```
  o64m.log
    matched RTS stat lines: 5499
    sum MUT cpu     : 2377.383 s
    sum GC cpu      : 1127.146 s
    sum MUT elapsed : 2758.857 s
    sum GC elapsed  : 1135.587 s
    GC/MUT cpu ratio     : 0.474 (GC is 47.4% of MUT)
    GC/MUT elapsed ratio : 0.412 (GC is 41.2% of MUT)
    GC fraction of (MUT+GC) cpu     : 32.2%
    GC fraction of (MUT+GC) elapsed : 29.2%
    per-line GC/MUT cpu ratio: median 0.489, p90 1.099
    per-line GC/MUT elapsed ratio: median 0.367, p90 0.806
  ```
  
  Mutator time is roughly in the same ballpark, but GC CPU time has
  reduced by 18.22%, and mutator productivity has increased from 63.5%
  to 67.8%.
  

• 8372e13d
  by Cheng Shao at 2026-01-18T10:02:12-05:00

  rts: remove unused .def files from rts/win32
  
  This patch removes unused .def files from `rts/win32`, given we don't
  build .dll files for rts/ghc-internal/ghc-prim at all. Even when we
  resurrect win32 dll support at some point in the future, these .def
  files still contain incorrect symbols anyway and won't be of any use.
  

• f6af485d
  by Cheng Shao at 2026-01-18T10:03:19-05:00

  .gitmodules: use gitlab mirror for the libffi-clib submodule
  
  This patch fixes .gitmodules to use the gitlab mirror for the
  libffi-clib submodule, to make it coherent with other submodules that
  allow ghc developers to experiment with wip branches in submodules for
  ghc patches. Fixes #26783.
  

• 41432d25
  by Cheng Shao at 2026-01-18T10:05:13-05:00

  hadrian: remove the horrible i386 speedHack
  
  When hadrian builds certain rts objects for i386, there's a horrible
  speedHack that forces -fno-PIC even for dynamic ways of those objects.
  This is not compatible with newer versions of gcc/binutils as well as
  clang/lld, and this patch removes it. Fixes #26792.
  

• 323eb8f0
  by Cheng Shao at 2026-01-18T21:48:19-05:00

  hadrian: enable split sections for cross stage0
  
  This patch fixes a minor issue with `splitSectionsArgs` in hadrian:
  previously, it's unconditionally disabled for stage0 libraries because
  it's not going to be shipped in the final bindists. But it's only true
  when not cross compiling. So for now we also need to enable it for
  cross stage0 as well.
  

• 3fadfefe
  by Andreas Klebinger at 2026-01-18T21:49:01-05:00

  RTS: Document -K behaviour better
  

• 30f442a9
  by Teo Camarasu at 2026-01-20T13:57:26-05:00

  base: don't expose GHC.Num.{BigNat, Integer, Natural}
  
  We no longer expose GHC.Num.{BigNat, Integer, Natural} from base instead users should get these modules from ghc-bignum.
  We make this change to insulate end users from changes to GHC's implementation of big numbers.
  Implements CLC proposal 359: https://github.com/haskell/core-libraries-committee/issues/359
  

• 75a9053d
  by Teo Camarasu at 2026-01-20T13:58:07-05:00

  base: deprecate GHC internals in GHC.Num
  
  Implements CLC proposal: https://github.com/haskell/core-libraries-committee/issues/360
  

• 9534b032
  by Andreas Klebinger at 2026-01-20T13:58:50-05:00

  ghc-experimental: Update Changelog
  
  I tried to reconstruct a high level overview of the changes and when
  they were made since we introduced it.
  
  Fixes #26506
  
  Co-authored-by: Teo Camarasu <teofilcamarasu@gmail.com>
  

• 346f2f5a
  by Cheng Shao at 2026-01-20T13:59:30-05:00

  hadrian: remove RTS options in ghc-in-ghci flavour
  
  This patch removes the RTS options passed to ghc in ghc-in-ghci
  flavour, to workaround command line argument handling issue in
  hls/hie-boot that results in `-O64M` instead of `+RTS -O64M -RTS`
  being passed to ghc. It's not a hadrian bug per se, since ghc's own
  ghc-in-ghci multi repl works fine, but we should still make sure HLS
  works. Closes #26801.
  

• 759fd15a
  by Andreas Klebinger at 2026-01-21T16:05:28-05:00

  Don't build GHC with -Wcompat
  
  Without bumping the boot compiler the warnings it produces are often not
  actionable leading to pointless noise.
  
  Fixes #26800
  

• 3172db94
  by Torsten Schmits at 2026-01-21T16:06:11-05:00

  Use the correct field of ModOrigin when formatting error message listing hidden reexports
  

• 485c12b2
  by Cheng Shao at 2026-01-21T16:06:54-05:00

  Revert "hadrian: handle findExecutable "" gracefully"
  
  This reverts commit 1e5752f64a522c4025365856d92f78073a7b3bba. The
  underlying issue has been fixed in
  https://github.com/haskell/directory/commit/75828696e7145adc09179111a0d631b9a09963a4
  and present since 1.3.9.0, and hadrian directory lower bound is
  1.3.9.0, so we can revert our own in house hack now.
  

• 5efb58dc
  by Cheng Shao at 2026-01-21T16:07:36-05:00

  rts: fix typo in TICK_ALLOC_RTS
  
  This patch fixes a typo in the `TICK_ALLOC_RTS` macro, the original
  `bytes` argument was silently dropped. The Cmm code has its own
  version of `TICK_ALLOC_RTS` not affected by this typo, it affected the
  C RTS, and went unnoticed because the variable `n` happened to also be
  available at its call site. But the number was incorrect. Also fixes
  its call site since `WDS()` is not available in C.
  

• c406ea69
  by Cheng Shao at 2026-01-21T16:07:36-05:00

  rts: remove broken & unused ALLOC_P_TICKY
  
  This patch removes the `ALLOC_P_TICKY` macro from the rts, it's
  unused, and its expanded code is already broken.
  

• 34a27e20
  by Simon Peyton Jones at 2026-01-21T16:08:17-05:00

  Make the implicit-parameter class have representational role
  
  This MR addresses #26737, by making the built-in class IP
  have a representational role for its second parameter.
  
  See Note [IP: implicit parameter class] in
    ghc-internal:GHC.Internal.Classes.IP
  
  In fact, IP is (unfortunately, currently) exposed by
  base:GHC.Base, so we ran a quick CLC proposal to
  agree the change:
    https://github.com/haskell/core-libraries-committee/issues/385
  
  Some (small) compilations get faster because they only need to
  load (small) interface file GHC.Internal.Classes.IP.hi,
  rather than (large) GHC.Internal.Classes.hi.
  
  Metric Decrease:
      T10421
      T12150
      T12425
      T24582
      T5837
      T5030
  

• ca79475f
  by Cheng Shao at 2026-01-21T16:09:00-05:00

  testsuite: avoid re.sub in favor of simple string replacements
  
  This patch refactors the testsuite driver and avoids the usage of
  re.sub in favor of simple string replacements when possible. The
  changes are not comprehensive, and there are still a lot of re.sub
  usages lingering around the tree, but this already addresses a major
  performance bottleneck in the testsuite driver that might has to do
  with quadratic or worse slowdown in cpython's regular expression
  engine when handling certain regex patterns with large strings.
  Especially on i386, and i386 jobs are the bottlenecks of all full-ci
  validate pipelines!
  
  Here are the elapsed times of testing x86_64/i386 with -j48 before
  this patch:
  
  x86_64: `Build completed in 6m06s`
  i386: `Build completed in 1h36m`
  
  And with this patch:
  
  x86_64: `Build completed in 4m55s`
  i386: `Build completed in 4m23s`
  
  Fixes #26786.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 88c93796
  by Zubin Duggal at 2026-01-21T16:09:42-05:00

  ghc-toolchain: Also configure windres on non-windows platforms.
  It may be needed for cross compilation.
  
  Fixes #24588
  

• 9788c0ec
  by Cheng Shao at 2026-01-21T16:10:24-05:00

  ghci: print external interpreter trace messages to stderr instead of stdout
  
  This patch makes ghci print external interpreter trace messages to
  stderr instead of stdout, which is a much saner choice for diagnostic
  information. Closes #26807.
  

• 0491f08a
  by Sylvain Henry at 2026-01-22T03:44:26-05:00

  GC: don't use CAS without PARALLEL_GC on
  
  If we're not using the parallel GC, there is no reason to do a costly
  CAS. This was flagged as taking time in a perf profile.
  

• 211a8f56
  by Sylvain Henry at 2026-01-22T03:44:26-05:00

  GC: suffix parallel GC with "par" instead of "thr"
  
  Avoid some potential confusion (see discussion in !15351).
  

• 77a23cbd
  by fendor at 2026-01-22T03:45:08-05:00

  Remove blanket ignore that covers libraries/
  

• 18bf7f5c
  by Léana Jiang at 2026-01-22T08:58:45-05:00

  doc: update Flavour type in hadrian user-settings
  

• 3d5a1365
  by Cheng Shao at 2026-01-22T08:59:28-05:00

  hadrian: add missing notCross predicate for stage0 -O0
  
  There are a few hard-coded hadrian args that pass -O0 when compiling
  some heavy modules in stage0, which only makes sense when not
  cross-compiling and when cross-compiling we need properly optimized
  stage0 packages. So this patch adds the missing `notCross` predicate
  in those places.
  

• ee937134
  by Matthew Pickering at 2026-01-22T09:00:10-05:00

  Fix ghc-experimental GHC.Exception.Backtrace.Experimental module
  
  This module wasn't added to the cabal file so it was never compiled or
  included in the library.
  

• 1b490f5a
  by Zubin Duggal at 2026-01-22T09:00:53-05:00

  hadrian: Add ghc-{experimental,internal}.cabal to the list of dependencies of the doc target
  We need these files to detect the version of these libraries
  
  Fixes #26738
  

• cdb74049
  by Cheng Shao at 2026-01-22T14:52:36-05:00

  rts: avoid Cmm loop to initialize Array#/SmallArray#
  
  Previously, `newArray#`/`newSmallArray#` called an RTS C function to
  allocate the `Array#`/`SmallArray#`, then used a Cmm loop to
  initialize the elements. Cmm doesn't have native for-loop so the code
  is a bit awkward, and it's less efficient than a C loop, since the C
  compiler can effectively vectorize the loop with optimizations.
  
  So this patch moves the loop that initializes the elements to the C
  side. `allocateMutArrPtrs`/`allocateSmallMutArrPtrs` now takes a new
  `init` argument and initializes the elements if `init` is non-NULL.
  

• 4c784f00
  by Cheng Shao at 2026-01-22T14:53:19-05:00

  Fix testsuite run for +ipe flavour transformer
  
  This patch makes the +ipe flavour transformer pass the entire
  testsuite:
  
  - An RTS debug option `-DI` is added, the IPE trace information is now
    only printed with `-DI`. The test cases that do require IPE trace
    are now run with `-DI`.
  - The testsuite config option `ghc_with_ipe` is added, enabled when
    running the testsuite with `+ipe`, which skips a few tests that are
    sensitive to eventlog output, allocation patterns etc that can fail
    under `+ipe`.
  
  This is the first step towards #26799.
  
  Co-authored-by: Codex <codex@openai.com>
  

• be8e5236
  by Ben Gamari at 2026-01-23T03:28:45-05:00

  hadrian: Bump QuickCheck upper bound
  
  This patch bumps QuickCheck upper bound to 2.18. selftest rule
  manually tested to work with current latest QuickCheck-2.17.1.0.
  

• 5aa328fb
  by Zubin Duggal at 2026-01-23T03:29:30-05:00

  Add genindex to index.rst. This adds a link to the index in the navigation bar.
  
  Fixes #26437
  

• 917ab8ff
  by Oleg Grenrus at 2026-01-23T10:52:55-05:00

  Export labelThread from Control.Concurrent
  

• 3f5e8d80
  by Cheng Shao at 2026-01-23T10:53:37-05:00

  ci: only push perf notes on master/release branches
  
  This patch fixes push_perf_notes logic in ci.sh to only push perf
  notes on master/release branches. We used to unconditionally push perf
  notes even in MRs, but the perf numbers in the wip branches wouldn't
  be used as baseline anyway, plus this is causing a space leak in the
  ghc-performance-notes repo. See #25317 for the perf notes repo size
  problem.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 414b9593
  by Cheng Shao at 2026-01-24T07:11:51-05:00

  ci: remove duplicate keys in .gitlab-ci.yml
  
  This patch removes accidentally duplicate keys in `.gitlab-ci.yml`.
  The YAML spec doesn't allow duplicate keys in the first place, and
  according to GitLab docs
  (https://docs.gitlab.com/ci/yaml/yaml_optimization/#anchors), the
  latest key overrides the earlier entries.
  

• e5cb5491
  by Cheng Shao at 2026-01-24T07:12:34-05:00

  hadrian: drop obsolete configure/make builder logic for libffi
  
  This patch drops obsolete hadrian logic around `Configure
  libffiPath`/`Make libffiPath` builders, they are no longer needed
  after libffi-clib has landed. Closes #26815.
  

• 2d160222
  by Simon Hengel at 2026-01-24T07:13:17-05:00

  Fix typo in roles.rst

• 56db94f7
  by Peter Trommler at 2026-01-26T11:26:18+01:00

  PPC NCG: Generate clear right insn at arch width
  
  The clear right immediate (clrrxi) is only available in word and
  doubleword width. Generate clrrxi instructions at architecture
  width for all MachOp widths.
  
  Fixes #24145
  

• 5957a8ad
  by Wolfgang Jeltsch at 2026-01-27T06:11:40-05:00

  Add operations for obtaining operating-system handles
  
  This contribution implements CLC proposal #369. It adds operations for
  obtaining POSIX file descriptors and Windows handles that underlie
  Haskell handles. Those operating system handles can also be obtained
  without such additional operations, but this is more involved and, more
  importantly, requires using internals.
  

• 86a0510c
  by Greg Steuck at 2026-01-27T06:12:34-05:00

  Move flags to precede patterns for grep and read files directly
  
  This makes the tests pass with non-GNU (i.e. POSIX-complicant) tools.
  There's no reason to use cat and pipe where direct file argument works.
  

• 50761451
  by Cheng Shao at 2026-01-27T21:51:23-05:00

  ci: update darwin boot ghc to 9.10.3
  
  This patch updates darwin boot ghc to 9.10.3, along with other related
  updates, and pays off some technical debt here:
  
  - Update `nixpkgs` and use the `nixpkgs-25.05-darwin` channel.
  - Update the `niv` template.
  - Update LLVM to 21 and update `llvm-targets` to reflect LLVM 21
    layout changes for arm64/x86_64 darwin targets.
  - Use `stdenvNoCC` to prevent nix packaged apple sdk from being used
    by boot ghc, and manually set `DEVELOPER_DIR`/`SDKROOT` to enforce
    the usage of system-wide command line sdk for macos.
  - When building nix derivation for boot ghc, run `configure` via the
    `arch` command so that `configure` and its subprocesses pick up the
    manually specified architecture.
  - Remove the previous horrible hack that obliterates `configure` to
    make autoconf test result in true. `configure` now properly does its
    job.
  - Remove the now obsolete configure args and post install settings
    file patching logic.
  - Use `scheme-small` for texlive to avoid build failures in certain
    unused texlive packages, especially on x86_64-darwin.
  

• 94dcd15e
  by Matthew Pickering at 2026-01-27T21:52:05-05:00

  Evaluate backtraces for "error" exceptions at the moment they are thrown
  
  See Note [Capturing the backtrace in throw] and
  Note [Hiding precise exception signature in throw] which explain the
  implementation.
  
  This commit makes `error` and `throw` behave the same with regard to
  backtraces. Previously, exceptions raised by `error` would not contain
  useful IPE backtraces.
  
  I did try and implement `error` in terms of `throw` but it started to
  involve putting diverging functions into hs-boot files, which seemed to
  risky if the compiler wouldn't be able to see if applying a function
  would diverge.
  
  CLC proposal: https://github.com/haskell/core-libraries-committee/issues/383
  
  Fixes #26751
  

• ef35e3ea
  by Teo Camarasu at 2026-01-27T21:52:46-05:00

  ghc-internal: move all Data instances to Data.Data
  
  Most instances of Data are defined in GHC.Internal.Data.Data.
  Let's move all remaining instance there.
  
  This moves other modules down in the dependency hierarchy allowing for
  more parallelism, and it decreases the likelihood that we would need to
  load this heavy .hi file if we don't actually need it.
  
  Resolves #26830
  
  Metric Decrease:
      T12227
      T16875
  

• 5e0ec555
  by sheaf at 2026-01-28T06:56:38-05:00

  Add test case for #25679
  
  This commit adds the T25679 test case. The test now passes, thanks to
  commit 1e53277af36d3f0b6ad5491f70ffc5593a49dcfd.
  
  Fixes #25679
  

• f1cd1611
  by sheaf at 2026-01-28T06:56:38-05:00

  Improve defaulting of representational equalities
  
  This commit makes the defaulting of representational equalities, introduced
  in 1e53277a, a little bit more robust. Now, instead of calling the eager
  unifier, it calls the full-blown constraint solver, which means that it can
  handle some subtle situations, e.g. involving functional dependencies and
  type-family injectivity annotations, such as:
  
    type family F a = r | r -> a
    type instance F Int = Bool
  
    [W] F beta ~R Bool
  

• 25edf516
  by sheaf at 2026-01-28T06:56:38-05:00

  Improve errors for unsolved representational equalities
  
  This commit adds a new field of CtLoc, CtExplanations, which allows the
  typechecker to leave some information about what it has done. For the moment,
  it is only used to improve error messages for unsolved representational
  equalities. The typechecker will now accumulate, when unifying at
  representational role:
  
    - out-of-scope newtype constructors,
    - type constructors that have nominal role in a certain argument,
    - over-saturated type constructors,
    - AppTys, e.g. `c a ~R# c b`, to report that we must assume that 'c' has
      nominal role in its parameters,
    - data family applications that do not reduce, potentially preventing
      newtype unwrapping.
  
  Now, instead of having to re-construct the possible errors after the fact,
  we simply consult the CtExplanations field.
  
  Additionally, this commit modifies the typechecker error messages that
  concern out-of-scope newtype constructors. The error message now depends
  on whether we have an import suggestion to provide to the user:
  
    - If we have an import suggestion for the newtype constructor,
      the message will be of the form:
  
        The data constructor MkN of the newtype N is out of scope
        Suggested fix: add 'MkN' to the import list in the import of 'M'
  
    - If we don't have any import suggestions, the message will be
      of the form:
  
        NB: The type 'N' is an opaque newtype, whose constructor is hidden
  
  Fixes #15850, #20289, #20468, #23731, #25949, #26137
  

• 4d0e6da1
  by Simon Peyton Jones at 2026-01-28T06:57:19-05:00

  Fix two bugs in short-cut constraint solving
  
  There are two main changes here:
  
  * Use `isSolvedWC` rather than `isEmptyWC` in `tryShortCutSolver`
    The residual constraint may have some fully-solved, but
    still-there implications, and we don't want them to abort short
    cut solving!  That bug caused #26805.
  
  * In the short-cut solver, we abandon the fully-solved residual
    constraint; but we may thereby lose track of Givens that are
    needed, and either report them as redundant or prune evidence
    bindings that are in fact needed.
  
    This bug stopped the `constraints` package from compiling;
    see the trail in !15389.
  
  The second bug led me to (another) significant refactoring
  of the mechanism for tracking needed EvIds.   See the new
     Note [Tracking needed EvIds] in GHC.Tc.Solver.Solve
  It's simpler and much less head-scratchy now.
  
  Some particulars:
  
  * An EvBindsVar now tracks NeededEvIds
  
  * We deal with NeededEvIds for an implication only when it is
    fully solved.  Much simpler!
  
  * `tryShortCutTcS` now takes a `TcM WantedConstraints` rather than
    `TcM Bool`, so that is can plumb the needed EvIds correctly.
  
  * Remove `ic_need` and `ic_need_implic` from Implication (hooray),
    and add `ics_dm` and `ics_non_dm` to `IC_Solved`.
  
  Pure refactor
  * Shorten data constructor `CoercionHole` to `CH`, following
    general practice in GHC.
  * Rename `EvBindMap` to `EvBindsMap` for consistency
  

• 662480b7
  by Cheng Shao at 2026-01-28T06:58:00-05:00

  ci: use debian validate bindists instead of fedora release bindists in testing stage
  
  This patch changes the `abi-test`, `hadrian-multi` and `perf` jobs in
  the full-ci pipeline testing stage to use debian validate bindists
  instead of fedora release bindists, to increase pipeline level
  parallelism and allow full-ci pipelines to complete earlier. Closes #26818.
  

• 39581ec6
  by Cheng Shao at 2026-01-28T06:58:40-05:00

  ci: run perf test with -j$cores
  
  This patch makes the perf ci job compile Cabal with -j$cores to speed
  up the job.
  

• 607b287b
  by Wolfgang Jeltsch at 2026-01-28T15:41:53+02:00

  Remove `GHC.Desugar` from `base`
  
  `GHC.Desugar` was deprecated and should have been removed in GHC 9.14.
  However, the removal was forgotten, although there was a code block that
  was intended to trigger a compilation error when the GHC version in use
  was 9.14 or later. This code sadly didn’t work, because the
  `__GLASGOW_HASKELL__` macro was misspelled as `__GLASGOW_HASKELL`.
  

• e8f5a45d
  by sterni at 2026-01-29T04:19:18-05:00

  users_guide: fix runtime error during build with Sphinx 9.1.0
  
  Appears that pathto is stricter about what it accepts now.
  Tested Sphinx 8.2.3 and 9.1.0 on the ghc-9.10 branch.
  
  Resolves #26810.
  
  Co-authored-by: Martin Weinelt <hexa@darmstadt.ccc.de>
  

• ce2d62fb
  by Jessica Clarke at 2026-01-29T19:48:51-05:00

  PPC NCG: Use libcall for 64-bit cmpxchg on 32-bit PowerPC
  
  There is no native instruction for this, and even if there were a
  register pair version we could use, the implementation here is assuming
  the values fit in a single register, and we end up only using / defining
  the low halves of the registers.
  
  Fixes: b4d39adbb5 ("PrimOps: Add CAS op for all int sizes")
  Fixes: #23969
  

• 43d97761
  by Michael Karcher at 2026-01-29T19:49:43-05:00

  NCG for PPC: add pattern for CmmRegOff to iselExpr64
  
  Closes #26828

• aeeb4a20
  by Matthew Pickering at 2026-01-30T11:42:47-05:00

  determinism: Use deterministic map for Strings in TyLitMap
  
  When generating typeable evidence the types we need evidence for all
  cached in a TypeMap, the order terms are retrieved from a type map
  determines the order the bindings appear in the program.
  
  A TypeMap is quite diligent to use deterministic maps, apart from in the
  TyLitMap, which uses a UniqFM for storing strings, whose ordering
  depends on the Unique of the FastString.
  
  This can cause non-deterministic .hi and .o files.
  
  An unexpected side-effect is the error message but RecordDotSyntaxFail8
  changing. I looked into this with Sam and this change caused the
  constraints to be solved in a different order which results in a
  slightly different error message. I have accepted the new test, since
  the output before was non-deterministic and the new output is consistent
  with the other messages in that file.
  
  Fixes #26846
  

• 9e4d70c2
  by Andrew Lelechenko at 2026-01-30T11:43:29-05:00

  Upgrade text submodule to 2.1.4
  

• 631fa5ae
  by Recursion Ninja at 2026-01-31T22:30:11+00:00

  Decouple `L.S.H.Decls` from importing `GHC.Types.Basic`
  
  Data-types within `GHC.Types.Basic` which describe components of
  the AST are migrated to `Language.Haskell.Syntax.Basic`. Related
  function definitions are also moved.
  
  Types moved to L.H.S. because they are part of the AST:
    * TopLevelFlag
    * RuleName
  
  Types moved from L.H.S. to GHC.Hs. because they are not needed in the AST:
    * TyConFlavour
    * TypeOrData
    * NewOrData
  
  Migrated instances:
    * `Outputable` instances moved to in `GHC.Utils.Outputable`
    * `Binary` instance of `Boxity` moved to to `GHC.Utils.Binary`
    * Other `Binary` instances are orphans to be migrated later.
  
  The `OverlapMode` data-type is given a TTG extension point.
  The `OverlapFlag` data-type, which depends on `OverlapMode`,
  is updated to support `OverlapMode` with a GHC "pass" type paramerter.
  In order to avoid module import cycles, `OverlapMode` and `OverlapFlag`
  are migrated to new modules (no way around this).
  
    * Migrated `OverlapMode` to new module `Language.Haskell.Syntax.Overlap`
    * Migrated `OverlapFlag` to new module `GHC.Hs.Decls.Overlap`
  

• 9769cc03
  by Simon Hengel at 2026-02-01T04:21:03-05:00

  Update the documentation for MultiWayIf (fixes #25376)
  
  (so that it matches the implementation)
  

• 5fc9442a
  by Peter Trommler at 2026-02-01T04:21:44-05:00

  hadrian: Fix dependency generation for assembler
  
  Assembler files allow # for comments unless in column 1. A modern
  cpp for C treats those a preprocessor directives. We tell gcc that
  a .S file is assembler with cpp and not C.
  
  Fixes #26819
  

• 269c4087
  by Simon Peyton Jones at 2026-02-01T19:38:10-05:00

  Include current phase in the range for rule/unfoldings
  
  This MR fixes a bad loop in the compiler: #26826.
  
  The fix is to add (WAR2) to
     Note [What is active in the RHS of a RULE or unfolding?]
  in GHC.Core.Opt.Simplify.Utils
  

• ddf1434f
  by Vladislav Zavialov at 2026-02-01T19:38:52-05:00

  Refactor: merge HsMultilineString into HsString (#26860)
  
  Before this patch, HsLit defined two separate constructors to represent
  single-line and multi-line strings:
  
  	data HsLit x
  	  ...
  	  | HsString (XHsString x) FastString
  	  | HsMultilineString (XHsMultilineString x) FastString
  
  I found this to be an unnecessary complication and an obstacle to unifying
  HsLit with HsTyLit. Now we use HsString for both kinds of literals.
  
  One user-facing change here is `ppr (HsString st s)` behaving differently for
  single-line strings containing newlines:
  
  	x = "first line \
  	    \asdf\n\
  	    \second line"
  
  Previously, the literal was fed to `ftext` with its newlines, producing an
  ill-formed SDoc. This issue is now addressed by using `split` for both
  single-line and multi-line strings:
  
  	vcat $ map text $ split '\n' (unpackFS src)
  
  See the parser/should_fail/T26860ppr test.
  
  In addition (and unrelatedly to the main payload of this patch),
  drop the unused pmPprHsLit helper.
  

• 2b4f463c
  by Simon Peyton Jones at 2026-02-02T17:32:32+00:00

  Remove exprIsCheap from doFloatFromRhs
  
  See #26854 and Note [Float when expandable]
  
  This patch simplifies the code, by removing an extra unnecessary test.
  

• 9db7f21f
  by Brandon Chinn at 2026-02-03T09:15:10-05:00

  Refactor: make function patterns exhaustive
  
  Also added missing (==) logic for:
    * HsMultilineString
    * HsInt{8,16,32}
    * HsWord{8,16,32}
  

• aa9c5e2c
  by Hécate Kleidukos at 2026-02-03T15:58:35-05:00

  driver: Hide source paths at verbosity level 1 by default
  

• c64cca1e
  by mangoiv at 2026-02-03T15:59:29-05:00

  ExplicitLevelImports: check staging for types just like for values
  
  Previously, imported types were entirely exempted from staging checks as
  the implicit stage persistance assumed to be all imported types to be
  well staged. ExplicitLevelImports' change specification, however, does
  not do such an exemption. Thus we want to introduce such a check, just
  like we have for values.
  ExplicitLevelImports does not, however, talk about local names - from
  its perspective, we could theoretically keep treating locally introduced
  types specially - e.g. an ill-staged used in a quote would only emit a
  warning, not an error. To allow for a potential future migration away
  from such wrinkles as the staging check in notFound
  (see  Note [Out of scope might be a staging error]) we consistently do
  the strict staging check that we also do for value if ExplicitLevelImports
  is on.
  
  Closes #26098
  

• 5f0dbeb6
  by Simon Hengel at 2026-02-03T16:00:12-05:00

  Use Haddock formatting in deprecation message of `initNameCache`

• 01ecb612
  by Andreas Klebinger at 2026-02-04T09:56:25-05:00

  testsuite: Explicitly use utf-8 encoding in rts-includes linter.
  
  Not doing so caused failures on windows, as python failed to pick a
  reasonable encoding even with locale set.
  
  Fixes #26850
  

• ea0d1317
  by Zubin Duggal at 2026-02-04T09:57:06-05:00

  Bump transformers submodule to 0.6.3.0
  
  Fixes #26790
  

• cbe4300e
  by Simon Peyton Jones at 2026-02-05T04:31:04-05:00

  Fix subtle bug in GHC.Core.Utils.mkTick
  
  This patch fixes a decade-old bug in `mkTick`, which
  could generate type-incorrect code!  See the diagnosis
  in #26772.
  
  The new code is simpler and easier to understand.
  (As #26772 says, I think it could be improved further.)
  

• a193a8da
  by Simon Peyton Jones at 2026-02-05T04:31:04-05:00

  Modify a debug-trace in the Simplifier
  
  ...just to show a bit more information.
  

• b579dfdc
  by Simon Peyton Jones at 2026-02-05T04:31:04-05:00

  Fix long-standing interaction between ticks and casts
  
  The code for Note [Eliminate Identity Cases] was simply wrong when
  ticks and casts interacted.  This patch fixes the interaction.
  
  It was shown up when validating #26772, although it's not the exactly
  the bug that's reported by #26772.  Nor is it easy to reproduce, hence
  no regression test.
  

• fac0de1e
  by Cheng Shao at 2026-02-05T04:31:49-05:00

  libraries: bump Cabal submodule to 3.16.1.0
  

• 00589122
  by Cheng Shao at 2026-02-05T04:31:49-05:00

  libraries: bump deepseq submodule to 1.5.2.0
  
  Also:
  
  - Get rid of usage of deprecated `NFData` function instance in the
    compiler
  - `T21391` still relies on `NFData` function instance, add
    `-Wno-deprecations` for the time being.
  

• 84474c71
  by Cheng Shao at 2026-02-05T04:31:50-05:00

  libraries: bump directory submodule to 1.3.10.1
  

• 1a9f4662
  by Cheng Shao at 2026-02-05T04:31:50-05:00

  libraries: bump exceptions submodule to 0.10.12
  

• 2e39a340
  by Peng Fan at 2026-02-07T03:42:01-05:00

  NCG/LA64: adjust register usage to avoid src-register being clobbered
  

• 9faf1b35
  by Teo Camarasu at 2026-02-07T03:42:43-05:00

  ghc-internal: Delete unnecessary GHC.Internal.Data.Ix
  
  This module merely re-exports GHC.Internal.Ix. It was copied from
  `base` when `ghc-internal` was split, but there is no reason to have
  this now. So, let's delete it.
  
  Resolves #26848
  

• d112b440
  by Sven Tennie at 2026-02-07T10:47:56-05:00

  Add cabal.project file to generate-ci
  
  This fixes the HLS setup for our CI code generation script
  (generate-ci).
  
  The project file simply makes `generate-ci` of the cabal file
  discoverable.
  

• 5339f6f0
  by Andreas Klebinger at 2026-02-07T10:48:40-05:00

  CI: Don't collapse test results.
  
  This puts test output back into the primary test log instead of a
  subsection removing the need to expand a section to see test results.
  
  While the intention was good in practice the old behaviour mostly wastes time
  by requiring expansion of the section.
  
  Fixes #26882
  

• 0e1cd2e0
  by Evan Piro at 2026-02-08T10:35:16-08:00

  Linker.MacOS reduce dynflags import
  

• 1c79a4cd
  by Michael Alan Dorman at 2026-02-09T08:11:51-05:00

  Remove `extra_src_files` variable from `testsuite/driver/testlib.py`
  
  While reading through the test harness code, I noticed this variable
  with a TODO attached that referenced #12223.  Although that bug is
  closed, it strongly implied that this special-case variable that only
  affected a single test was expected to be removed at some point.
  
  I also looked at 3415bcaa0b1903b5e12dfaadb5b774718e406eab---where it
  was added---whose commit message suggested that it would have been
  desirable to remove it, but that there were special circumstances that
  meant it had to remain (though it doesn't elucidate what those special
  circumstances are).
  
  However, the special circumstances were mentioned as if the test was
  in a different location than is currently is, so I decided to try
  changing the test to use the standard `extra_files` mechanism, which
  works in local testing.
  
  This also seems like a reasonable time to remove the script that was
  originally used in the transition, since it doesn't really serve a
  purpose anymore.
  

• 0020e38a
  by Matthew Pickering at 2026-02-09T17:29:14-05:00

  determinism: Use a stable sort in WithHsDocIdentifiers binary instance
  
  `WithHsDocIdentifiers` is defined as
  
  ```
   71 data WithHsDocIdentifiers a pass = WithHsDocIdentifiers
   72   { hsDocString      :: !a
   73   , hsDocIdentifiers :: ![Located (IdP pass)]
   74   }
  ```
  
  This list of names is populated from `rnHsDocIdentifiers`, which calls
  `lookupGRE`, which calls `lookupOccEnv_AllNameSpaces`, which calls
  `nonDetEltsUFM` and returns the results in an order depending on
  uniques.
  
  Sorting the list with a stable sort before returning the interface makes
  the output deterministic and follows the approach taken by other fields
  in `Docs`.
  
  Fixes #26858
  

• 89898ce6
  by echoumcp1 at 2026-02-09T17:30:01-05:00

  Replace putstrln with logMsg in handleSeqHValueStatus
  
  Fixes #26549
  

• 7c52c4f9
  by John Paul Adrian Glaubitz at 2026-02-10T13:52:43-05:00

  rts: Switch prim to use modern atomic compiler builtins
  
  The __sync_*() atomic compiler builtins have been deprecated in GCC
  for a while now and also don't provide variants for 64-bit values
  such as __sync_fetch_and_add_8().
  
  Thus, replace them with the modern __atomic_*() compiler builtins and
  while we're at it, also drop the helper macro CAS_NAND() which is now
  no longer needed since we stopped using the __sync_*() compiler builtins
  altogether.
  
  Co-authored-by: Ilias Tsitsimpis <iliastsi@debian.org>
  
  Fixes #26729
  

• cf60850a
  by Recursion Ninja at 2026-02-10T13:53:27-05:00

  Decoupling L.H.S.Decls from GHC.Types.ForeignCall
  
    - Adding TTG extension point for 'CCallTarget'
    - Adding TTG extension point for 'CType'
    - Adding TTG extension point for 'Header'
    - Moving ForeignCall types that do not need extension
      to new L.H.S.Decls.Foreign module
    - Replacing 'Bool' parameters with descriptive data-types
      to increase clairty and prevent "Boolean Blindness"
  

• 11a04cbb
  by Eric Lee at 2026-02-11T09:20:46-05:00

  Derive Semigroup/Monoid for instances believed could be derived in #25871
  

• 15d9ce44
  by Eric Lee at 2026-02-11T09:20:46-05:00

  add Ghc.Data.Pair deriving
  

• c85dc170
  by Evan Piro at 2026-02-11T09:21:45-05:00

  Linker.MacOS reduce options import
  

• a541dd83
  by Chris Wendt at 2026-02-11T16:06:41-05:00

  Initialize plugins for `:set +c` in GHCi
  
  Fixes #23110.
  

• 0f5a73bc
  by Cheng Shao at 2026-02-11T16:07:27-05:00

  compiler: add Binary Text instance
  
  This patch adds `Binary` instance for strict `Text`, in preparation of
  making `Text` usable in certain GHC API use cases (e.g. haddock). This
  also introduces `text` as a direct dependency of the `ghc` package.
  

• 9e58b8a1
  by Cheng Shao at 2026-02-11T16:08:10-05:00

  ghc-toolchain: add C11 check
  
  This patch partially reverts commit
  b8307eab80c5809df5405d76c822bf86877f5960 that removed C99 check in
  autoconf/ghc-toolchain. Now we:
  
  - No longer re-implement `FP_SET_CFLAGS_C11` similar to
    `FP_SET_CFLAGS_C99` in the past, since autoconf doesn't provide a
    convenient `AC_PROG_CC_C11` function. ghc-toolchain will handle it
    anyway.
  - The Cmm CPP C99 check is relanded and repurposed for C11.
  - The C99 logic in ghc-toolchain is relanded and repurposed for C11.
  - The C99 check in Stg.h is corrected to check for C11. The obsolete
    _ISOC99_SOURCE trick is dropped.
  - Usages of `-std=gnu99` in the testsuite are corrected to use
    `-std=gnu11`.
  
  Closes #26908.
  

• 4df0adf6
  by Simon Peyton Jones at 2026-02-11T21:50:13-05:00

  Simplify the treatment of static forms
  
  This MR implements GHC proposal 732: simplify static forms,
     https://github.com/ghc-proposals/ghc-proposals/pull/732
  thereby addressing #26556.
  
  See `Note [Grand plan for static forms]` in GHC.Iface.Tidy.StaticPtrTable
  
  The main changes are:
  
  * There is a new, simple rule for (static e), namely that the free
    term variables of `e` must be bound at top level.  The check is
    done in the `HsStatic` case of `GHC.Rename.Expr.rnExpr`
  
  * That in turn substantially simplifies the info that the typechecker
    carries around in its type environment.  Hooray.
  
  * The desugarer emits static bindings to top level directly; see the
    `HsStatic` case of `dsExpr`.
  
  * There is no longer any special static-related magic in the FloatOut
    pass.  And the main Simplifier pipeline no longer needs a special case
    to run FloatOut even with -O0.  Hooray.
  
  All this forced an unexpected change to the pattern match checker. It
  recursively invokes the main Hs desugarer when it wants to take a look
  at a term to spot some special cases (notably constructor applications).
  We don't want to emit any nested (static e) bindings to top level a
  second time!  Yikes.
  
  That forced a modest refactor in GHC.HsToCore.Pmc:
  
  * The `dsl_nablas` field of `DsLclEnv` now has a `NoPmc` case, which says
    "I'm desugaring just for pattern-match checking purposes".
  
  * When that flag is set we don't emit static binds.
  
  That in turn forces a cascade of refactoring, but the net effect is an
  improvement; less risk of duplicated (even exponential?) work.
  
  See Note [Desugaring HsExpr during pattern-match checking].
  
  10% metric decrease, on some architectures, of compile-time max-bytes-used on T15304.
  
  Metric Decrease:
      T15304
  

• 7922f728
  by Teo Camarasu at 2026-02-11T21:50:58-05:00

  ghc-internal: avoid depending on GHC.Internal.Exts
  
  This module is mostly just re-exports. It made sense as a user-facing
  module, but there's no good reason ghc-internal modules should depend on
  it and doing so linearises the module graph
  
  - move considerAccessible to GHC.Internal.Magic
  
  Previously it lived in GHC.Internal.Exts, but it really deserves to live
  along with the other magic function, which are already re-exported from .Exts
  
  - move maxTupleSize to GHC.Internal.Tuple
  
  This previously lived in GHC.Internal.Exts but a comment already said it
  should be moved to .Tuple
  
  Resolves #26832
  

• b6a4a29b
  by Eric Lee at 2026-02-11T21:51:55-05:00

  Remove unused Semigroup imports to fix GHC 9.14 bootstrapping
  

• 99d8c146
  by Simon Peyton Jones at 2026-02-12T17:36:59+00:00

  Fix subtle bug in cast worker/wrapper
  
  See (CWw4) in Note [Cast worker/wrapper].
  
  The true payload is in the change to the definition of
     GHC.Types.Id.Info.hasInlineUnfolding
  Everthing else is just documentation.
  
  There is a 2% compile time decrease for T13056;
  I'll take the win!
  
  Metric Decrease:
      T13056
  

• 530e8e58
  by Simon Peyton Jones at 2026-02-12T20:17:23-05:00

  Add regression tests for four StaticPtr bugs
  
  Tickets #26545, #24464, #24773, #16981 are all solved by the
  recently-landed MR
  
      commit 318ee13bcffa6aa8df42ba442ccd92aa0f7e210c
      Author: Simon Peyton Jones <simon.peytonjones@gmail.com>
      Date:   Mon Oct 20 23:07:20 2025 +0100
  
      Simplify the treatment of static forms
  
  This MR just adds regression tests for them.
  

• 4157160f
  by Cheng Shao at 2026-02-13T06:27:04-05:00

  ci: remove unused hlint-ghc-and-base job definition
  
  This patch removes the unused `hlint-ghc-and-base` job definition,
  it's never run since !9806. Note that hadrian lint rules still work
  locally, so anyone that wishes to run hlint on the codebase can
  continue to do so in their local worktree.
  

• 039f1977
  by Cheng Shao at 2026-02-13T06:27:47-05:00

  wasm: use import.meta.main for proper distinction of nodejs main modules
  
  This patch uses `import.meta.main` for proper distinction of nodejs
  main modules, especially when the main module might be installed as a
  symlink. Fixes #26916.
  

• 14f485ee
  by ARATA Mizuki at 2026-02-17T09:09:24+09:00

  Support more x86 extensions: AVX-512 {BW,DQ,VL} and GFNI
  
  Also, mark AVX-512 ER and PF as deprecated.
  
  AVX-512 instructions can be used for certain 64-bit integer vector operations.
  
  GFNI can be used to implement bitReverse (currently not used by NCG, but LLVM may use it).
  
  Closes #26406
  Addresses #26509
  

• 016f79d5
  by fendor at 2026-02-17T09:16:16-05:00

  Hide implementation details from base exception stack traces
  
  Ensure we hide the implementation details of the exception throwing mechanisms:
  
  * `undefined`
  * `throwSTM`
  * `throw`
  * `throwIO`
  * `error`
  
  The `HasCallStackBacktrace` should always have a length of exactly 1,
  not showing internal implementation details in the stack trace, as these
  are vastly distracting to end users.
  
  CLC proposal [#387](https://github.com/haskell/core-libraries-committee/issues/387)
  

• 4f2840f2
  by Brian J. Cardiff at 2026-02-17T17:04:08-05:00

  configure: Accept happy-2.2
  
  In Jan 2026 happy-2.2 was released. The most sensible change is https://github.com/haskell/happy/issues/335 which didn't trigger in a fresh build
  

• 10b4d364
  by Duncan Coutts at 2026-02-17T17:04:52-05:00

  Fix errors in the documentation of the eventlog STOP_THREAD status codes
  
  Fix the code for BlockedOnMsgThrowTo.
  
  Document all the known historical warts.
  
  Fixes issue #26867
  

• c5e15b8b
  by Phil de Joux at 2026-02-18T05:07:36-05:00

  haddock: use snippets for all list examples
  
  - generate snippet output for docs
  - reduce font size to better fit snippets
  - Use only directive to guard html snippets
  - Add latex snippets for lists
  

• d388bac1
  by Phil de Joux at 2026-02-18T05:07:36-05:00

  haddock: Place the snippet input and output together
  
  - Put the output seemingly inside the example box
  

• 016fa306
  by Samuel Thibault at 2026-02-18T05:08:35-05:00

  Fix linking against libm by moving the -lm option
  
  For those systems that need -lm for getting math functions, this is
  currently added on the link line very early, before the object files being
  linked together. Newer toolchains enable --as-needed by default, which means
  -lm is ignored at that point because no object requires a math function
  yet. With such toolchains, we thus have to add -lm after the objects, so the
  linker actually includes libm in the link.
  

• 68bd0805
  by Teo Camarasu at 2026-02-18T05:09:19-05:00

  ghc-internal:  Move GHC.Internal.Data.Bool to base
  
  This is a tiny module that only defines bool :: Bool -> a -> a -> a. We can just move this to base and delete it from ghc-internal. If we want this functionality there we can just use a case statement or if-then expression.
  
  Resolves 26865
  

• 4c40df3d
  by fendor at 2026-02-20T10:24:48-05:00

  Add optional `SrcLoc` to `StackAnnotation` class
  
  `StackAnnotation`s give access to an optional `SrcLoc` field that
  user-added stack annotations can use to provide better backtraces in both error
  messages and when decoding the callstack.
  
  We update builtin stack annotations such as `StringAnnotation` and
  `ShowAnnotation` to also capture the `SrcLoc` of the current `CallStack`
  to improve backtraces by default (if stack annotations are used).
  
  This change is backwards compatible with GHC 9.14.1.
  

• fd9aaa28
  by Simon Hengel at 2026-02-20T10:25:33-05:00

  docs: Fix grammar in explicit_namespaces.rst
  

• 44354255
  by Vo Minh Thu at 2026-02-20T18:53:06-05:00

  GHCi: add a :version command.
  
  This looks like:
  
      ghci> :version
      GHCi, version 9.11.20240322
  
  This closes #24576.
  
  Co-Author: Markus Läll <markus.l2ll@gmail.com>
  

• eab3dbba
  by Andreas Klebinger at 2026-02-20T18:53:51-05:00

  hadrian/build-cabal: Better respect and utilize -j
  
  * We now respect -j<n> for the cabal invocation to build hadrian rather
    than hardcoding -j
  * We use the --semaphore flag to ensure cabal/ghc build the hadrian
    executable in parallel using the -jsem mechanism.
  
  Saves 10-15s on fresh builds for me.
  
  Fixes #26876
  

• 17839248
  by Teo Camarasu at 2026-02-24T08:36:03-05:00

  ghc-internal: avoid depending on GHC.Internal.Control.Monad.Fix
  
  This module contains the definition of MonadFix, since we want an
  instance for IO, that instance requires a lot of machinery and we want
  to avoid an orphan instance, this will naturally be quite high up in the
  dependency graph.
  
  So we want to avoid other modules depending on it as far as possible.
  
  On Windows, the IO manager depends on the RTSFlags type, which
  transtively depends on MonadFix. We refactor things to avoid this
  dependency, which would have caused a regression.
  
  Resolves #26875
  
  Metric Decrease:
      T12227
  

• fa88d09a
  by Wolfgang Jeltsch at 2026-02-24T08:36:47-05:00

  Refine the imports of `System.IO.OS`
  
  Commit 68bd08055594b8cbf6148a72d108786deb6c12a1 replaced the
  `GHC.Internal.Data.Bool` import by a `GHC.Internal.Base` import.
  However, while the `GHC.Internal.Data.Bool` import was conditional and
  partial, the `GHC.Internal.Base` import is unconditional and total. As a
  result, the import list is not tuned to import only the necessary bits
  anymore, and furthermore GHC emits a lot of warnings about redundant
  imports.
  
  This commit makes the `GHC.Internal.Base` import conditional and partial
  in the same way that the `GHC.Internal.Data.Bool` import was.
  

• 55c6259b
  by Andreas Klebinger at 2026-02-25T15:30:00+00:00

  Add strict array read/write primops.
  
  Those will enfore argument evaluation using the EPT mechanism for writes.
  For reads the compiler has knowledge that those are evaluated references
  allowing us to skip eval checks.
  

• a156fe49
  by Andreas Klebinger at 2026-02-25T15:30:42+00:00

  Minimal Strict# implementation
  

1592 changed files:

• .gitattributes
• .gitignore
• .gitlab-ci.yml
• .gitlab/ci.sh
• .gitlab/darwin/nix/sources.json
• .gitlab/darwin/toolchain.nix
• + .gitlab/generate-ci/cabal.project
• .gitlab/generate-ci/gen_ci.hs
• + .gitlab/issue_templates/get-verified.md
• .gitlab/jobs.yaml
• .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
• .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
• .gitlab/rel_eng/upload_ghc_libs.py
• .gitlab/test-metrics.sh
• .gitmodules
• CODEOWNERS
• cabal.project-reinstall
• compile_flags.txt
• compiler/GHC.hs
• compiler/GHC/Builtin/Names.hs
• compiler/GHC/Builtin/PrimOps.hs
• compiler/GHC/Builtin/PrimOps/Ids.hs
• compiler/GHC/Builtin/Types.hs
• compiler/GHC/Builtin/Types/Literals.hs
• compiler/GHC/Builtin/Types/Prim.hs
• compiler/GHC/Builtin/Utils.hs
• compiler/GHC/Builtin/primops.txt.pp
• compiler/GHC/ByteCode/Asm.hs
• compiler/GHC/ByteCode/Breakpoints.hs
• compiler/GHC/ByteCode/InfoTable.hs
• compiler/GHC/ByteCode/Instr.hs
• compiler/GHC/ByteCode/Linker.hs
• compiler/GHC/ByteCode/Serialize.hs
• compiler/GHC/ByteCode/Types.hs
• compiler/GHC/Cmm.hs
• compiler/GHC/Cmm/BlockId.hs
• compiler/GHC/Cmm/CLabel.hs
• compiler/GHC/Cmm/CommonBlockElim.hs
• compiler/GHC/Cmm/Config.hs
• compiler/GHC/Cmm/ContFlowOpt.hs
• compiler/GHC/Cmm/Dataflow.hs
• compiler/GHC/Cmm/Dataflow/Block.hs
• compiler/GHC/Cmm/Dataflow/Graph.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/InitFini.hs
• compiler/GHC/Cmm/LRegSet.hs
• compiler/GHC/Cmm/LayoutStack.hs
• compiler/GHC/Cmm/Lint.hs
• compiler/GHC/Cmm/Liveness.hs
• compiler/GHC/Cmm/MachOp.hs
• compiler/GHC/Cmm/Node.hs
• compiler/GHC/Cmm/Opt.hs
• compiler/GHC/Cmm/Parser.y
• compiler/GHC/Cmm/ProcPoint.hs
• compiler/GHC/Cmm/Reducibility.hs
• compiler/GHC/Cmm/Reg.hs
• compiler/GHC/Cmm/Sink.hs
• compiler/GHC/Cmm/Switch.hs
• compiler/GHC/Cmm/Switch/Implement.hs
• compiler/GHC/Cmm/ThreadSanitizer.hs
• compiler/GHC/Cmm/UniqueRenamer.hs
• compiler/GHC/Cmm/Utils.hs
• compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
• compiler/GHC/CmmToAsm/AArch64/Ppr.hs
• compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
• compiler/GHC/CmmToAsm/BlockLayout.hs
• compiler/GHC/CmmToAsm/CFG.hs
• compiler/GHC/CmmToAsm/CPrim.hs
• compiler/GHC/CmmToAsm/Config.hs
• compiler/GHC/CmmToAsm/Dwarf/Types.hs
• compiler/GHC/CmmToAsm/Format.hs
• compiler/GHC/CmmToAsm/LA64/CodeGen.hs
• compiler/GHC/CmmToAsm/LA64/Ppr.hs
• compiler/GHC/CmmToAsm/Monad.hs
• compiler/GHC/CmmToAsm/PPC/CodeGen.hs
• compiler/GHC/CmmToAsm/PPC/Ppr.hs
• compiler/GHC/CmmToAsm/PPC/RegInfo.hs
• compiler/GHC/CmmToAsm/Ppr.hs
• compiler/GHC/CmmToAsm/RV64/CodeGen.hs
• compiler/GHC/CmmToAsm/RV64/Ppr.hs
• compiler/GHC/CmmToAsm/Reg/Graph.hs
• compiler/GHC/CmmToAsm/Reg/Graph/Coalesce.hs
• compiler/GHC/CmmToAsm/Reg/Graph/Spill.hs
• compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
• compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
• compiler/GHC/CmmToAsm/Reg/Linear.hs
• compiler/GHC/CmmToAsm/Reg/Linear/Base.hs
• compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
• compiler/GHC/CmmToAsm/Reg/Linear/StackMap.hs
• compiler/GHC/CmmToAsm/Reg/Linear/State.hs
• compiler/GHC/CmmToAsm/Reg/Linear/X86.hs
• compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs
• compiler/GHC/CmmToAsm/Reg/Liveness.hs
• + compiler/GHC/CmmToAsm/Reg/Regs.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/X86/CodeGen.hs
• compiler/GHC/CmmToAsm/X86/Instr.hs
• compiler/GHC/CmmToAsm/X86/Ppr.hs
• compiler/GHC/CmmToC.hs
• compiler/GHC/CmmToLlvm.hs
• compiler/GHC/CmmToLlvm/Base.hs
• compiler/GHC/CmmToLlvm/CodeGen.hs
• compiler/GHC/CmmToLlvm/Data.hs
• compiler/GHC/Core.hs
• compiler/GHC/Core/Coercion.hs
• compiler/GHC/Core/Coercion.hs-boot
• compiler/GHC/Core/Coercion/Axiom.hs
• compiler/GHC/Core/Coercion/Opt.hs
• compiler/GHC/Core/DataCon.hs
• compiler/GHC/Core/FamInstEnv.hs
• compiler/GHC/Core/InstEnv.hs
• compiler/GHC/Core/LateCC/OverloadedCalls.hs
• compiler/GHC/Core/LateCC/TopLevelBinds.hs
• compiler/GHC/Core/Lint.hs
• compiler/GHC/Core/Lint/Interactive.hs
• compiler/GHC/Core/Make.hs
• compiler/GHC/Core/Map/Expr.hs
• compiler/GHC/Core/Map/Type.hs
• compiler/GHC/Core/Multiplicity.hs
• compiler/GHC/Core/Opt/Arity.hs
• compiler/GHC/Core/Opt/CSE.hs
• compiler/GHC/Core/Opt/CallerCC.hs
• compiler/GHC/Core/Opt/ConstantFold.hs
• compiler/GHC/Core/Opt/CprAnal.hs
• compiler/GHC/Core/Opt/DmdAnal.hs
• compiler/GHC/Core/Opt/Monad.hs
• compiler/GHC/Core/Opt/OccurAnal.hs
• compiler/GHC/Core/Opt/Pipeline.hs
• compiler/GHC/Core/Opt/Pipeline/Types.hs
• compiler/GHC/Core/Opt/SetLevels.hs
• compiler/GHC/Core/Opt/Simplify.hs
• compiler/GHC/Core/Opt/Simplify/Env.hs
• compiler/GHC/Core/Opt/Simplify/Iteration.hs
• compiler/GHC/Core/Opt/Simplify/Utils.hs
• compiler/GHC/Core/Opt/SpecConstr.hs
• compiler/GHC/Core/Opt/Specialise.hs
• compiler/GHC/Core/Opt/WorkWrap.hs
• compiler/GHC/Core/Opt/WorkWrap/Utils.hs
• compiler/GHC/Core/Ppr.hs
• compiler/GHC/Core/Predicate.hs
• compiler/GHC/Core/RoughMap.hs
• compiler/GHC/Core/Rules.hs
• compiler/GHC/Core/SimpleOpt.hs
• compiler/GHC/Core/Subst.hs
• compiler/GHC/Core/Tidy.hs
• compiler/GHC/Core/TyCo/Compare.hs
• compiler/GHC/Core/TyCo/FVs.hs
• compiler/GHC/Core/TyCo/Rep.hs
• compiler/GHC/Core/TyCo/Subst.hs
• compiler/GHC/Core/TyCo/Tidy.hs
• compiler/GHC/Core/TyCon.hs
• compiler/GHC/Core/TyCon/Env.hs
• compiler/GHC/Core/TyCon/RecWalk.hs
• compiler/GHC/Core/Type.hs
• compiler/GHC/Core/Type.hs-boot
• compiler/GHC/Core/Unfold.hs
• compiler/GHC/Core/Unfold/Make.hs
• compiler/GHC/Core/Unify.hs
• compiler/GHC/Core/Utils.hs
• compiler/GHC/CoreToIface.hs
• compiler/GHC/CoreToStg.hs
• compiler/GHC/CoreToStg/AddImplicitBinds.hs
• compiler/GHC/CoreToStg/Prep.hs
• compiler/GHC/Data/Bag.hs
• compiler/GHC/Data/FastString.hs
• compiler/GHC/Data/Graph/Collapse.hs
• compiler/GHC/Data/Graph/Color.hs
• compiler/GHC/Data/Graph/Directed.hs
• compiler/GHC/Data/List/Infinite.hs
• compiler/GHC/Data/List/NonEmpty.hs
• compiler/GHC/Data/Maybe.hs
• compiler/GHC/Data/OsPath.hs
• compiler/GHC/Data/Pair.hs
• compiler/GHC/Data/Stream.hs
• compiler/GHC/Data/Strict.hs
• compiler/GHC/Data/StringBuffer.hs
• compiler/GHC/Data/TrieMap.hs
• compiler/GHC/Data/Word64Map.hs
• compiler/GHC/Driver/Backend.hs
• compiler/GHC/Driver/Backpack.hs
• compiler/GHC/Driver/CmdLine.hs
• compiler/GHC/Driver/CodeOutput.hs
• compiler/GHC/Driver/Config/CmmToAsm.hs
• compiler/GHC/Driver/Config/Core/Lint.hs
• compiler/GHC/Driver/Config/Core/Lint/Interactive.hs
• compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
• + compiler/GHC/Driver/Config/Interpreter.hs
• compiler/GHC/Driver/Config/Linker.hs
• compiler/GHC/Driver/Config/StgToCmm.hs
• compiler/GHC/Driver/Config/Tidy.hs
• compiler/GHC/Driver/Downsweep.hs
• compiler/GHC/Driver/DynFlags.hs
• compiler/GHC/Driver/Env.hs
• compiler/GHC/Driver/Env/KnotVars.hs
• compiler/GHC/Driver/Errors.hs
• compiler/GHC/Driver/Errors/Ppr.hs
• compiler/GHC/Driver/Errors/Types.hs
• compiler/GHC/Driver/Flags.hs
• compiler/GHC/Driver/GenerateCgIPEStub.hs
• compiler/GHC/Driver/Hooks.hs
• compiler/GHC/Driver/LlvmConfigCache.hs
• compiler/GHC/Driver/Main.hs
• compiler/GHC/Driver/Make.hs
• compiler/GHC/Driver/MakeFile.hs
• compiler/GHC/Driver/MakeSem.hs
• compiler/GHC/Driver/Phases.hs
• compiler/GHC/Driver/Pipeline.hs
• compiler/GHC/Driver/Pipeline/Execute.hs
• compiler/GHC/Driver/Pipeline/LogQueue.hs
• compiler/GHC/Driver/Pipeline/Monad.hs
• compiler/GHC/Driver/Pipeline/Phases.hs
• compiler/GHC/Driver/Plugins.hs
• compiler/GHC/Driver/Session.hs
• compiler/GHC/Driver/Session/Inspect.hs
• compiler/GHC/Driver/Session/Units.hs
• compiler/GHC/Hs.hs
• compiler/GHC/Hs/Basic.hs
• compiler/GHC/Hs/Binds.hs
• compiler/GHC/Hs/Decls.hs
• + compiler/GHC/Hs/Decls/Overlap.hs
• compiler/GHC/Hs/Doc.hs
• compiler/GHC/Hs/Doc.hs-boot
• compiler/GHC/Hs/DocString.hs
• compiler/GHC/Hs/Dump.hs
• compiler/GHC/Hs/Expr.hs
• compiler/GHC/Hs/Expr.hs-boot
• compiler/GHC/Hs/Extension.hs
• compiler/GHC/Hs/ImpExp.hs
• compiler/GHC/Hs/Instances.hs
• compiler/GHC/Hs/Lit.hs
• compiler/GHC/Hs/Pat.hs
• compiler/GHC/Hs/Pat.hs-boot
• compiler/GHC/Hs/Stats.hs
• compiler/GHC/Hs/Syn/Type.hs
• compiler/GHC/Hs/Type.hs
• compiler/GHC/Hs/Utils.hs
• compiler/GHC/HsToCore.hs
• compiler/GHC/HsToCore/Arrows.hs
• compiler/GHC/HsToCore/Binds.hs
• compiler/GHC/HsToCore/Docs.hs
• compiler/GHC/HsToCore/Errors/Ppr.hs
• compiler/GHC/HsToCore/Errors/Types.hs
• compiler/GHC/HsToCore/Expr.hs
• compiler/GHC/HsToCore/Foreign/C.hs
• compiler/GHC/HsToCore/Foreign/Call.hs
• compiler/GHC/HsToCore/Foreign/Decl.hs
• compiler/GHC/HsToCore/Foreign/JavaScript.hs
• compiler/GHC/HsToCore/Foreign/Utils.hs
• compiler/GHC/HsToCore/Foreign/Wasm.hs
• compiler/GHC/HsToCore/GuardedRHSs.hs
• compiler/GHC/HsToCore/ListComp.hs
• compiler/GHC/HsToCore/Match.hs
• compiler/GHC/HsToCore/Match/Literal.hs
• compiler/GHC/HsToCore/Monad.hs
• compiler/GHC/HsToCore/Pmc.hs
• compiler/GHC/HsToCore/Pmc/Check.hs
• compiler/GHC/HsToCore/Pmc/Desugar.hs
• compiler/GHC/HsToCore/Pmc/Solver.hs
• compiler/GHC/HsToCore/Pmc/Solver/Types.hs
• compiler/GHC/HsToCore/Pmc/Types.hs
• compiler/GHC/HsToCore/Pmc/Utils.hs
• compiler/GHC/HsToCore/Quote.hs
• compiler/GHC/HsToCore/Ticks.hs
• compiler/GHC/HsToCore/Types.hs
• compiler/GHC/HsToCore/Utils.hs
• compiler/GHC/Iface/Binary.hs
• compiler/GHC/Iface/Decl.hs
• compiler/GHC/Iface/Env.hs
• compiler/GHC/Iface/Errors.hs
• compiler/GHC/Iface/Errors/Ppr.hs
• compiler/GHC/Iface/Errors/Types.hs
• compiler/GHC/Iface/Ext/Ast.hs
• compiler/GHC/Iface/Ext/Debug.hs
• compiler/GHC/Iface/Ext/Types.hs
• compiler/GHC/Iface/Ext/Utils.hs
• compiler/GHC/Iface/Load.hs
• compiler/GHC/Iface/Make.hs
• compiler/GHC/Iface/Recomp.hs
• compiler/GHC/Iface/Rename.hs
• compiler/GHC/Iface/Syntax.hs
• compiler/GHC/Iface/Tidy.hs
• compiler/GHC/Iface/Tidy/StaticPtrTable.hs
• compiler/GHC/Iface/Type.hs
• compiler/GHC/Iface/Warnings.hs
• compiler/GHC/IfaceToCore.hs
• compiler/GHC/JS/Ident.hs
• compiler/GHC/JS/JStg/Monad.hs
• compiler/GHC/JS/JStg/Syntax.hs
• compiler/GHC/JS/Make.hs
• compiler/GHC/JS/Optimizer.hs
• compiler/GHC/JS/Ppr.hs
• compiler/GHC/JS/Syntax.hs
• compiler/GHC/JS/Transform.hs
• + compiler/GHC/Linker/ByteCode.hs
• compiler/GHC/Linker/Config.hs
• compiler/GHC/Linker/Deps.hs
• compiler/GHC/Linker/Dynamic.hs
• + compiler/GHC/Linker/Executable.hs
• − compiler/GHC/Linker/ExtraObj.hs
• compiler/GHC/Linker/Loader.hs
• compiler/GHC/Linker/MacOS.hs
• compiler/GHC/Linker/Static.hs
• compiler/GHC/Linker/Types.hs
• compiler/GHC/Linker/Unit.hs
• compiler/GHC/Linker/Windows.hs
• compiler/GHC/Llvm/MetaData.hs
• compiler/GHC/Llvm/Ppr.hs
• compiler/GHC/Llvm/Types.hs
• compiler/GHC/Parser.y
• compiler/GHC/Parser/Annotation.hs
• compiler/GHC/Parser/Errors/Basic.hs
• compiler/GHC/Parser/Errors/Ppr.hs
• compiler/GHC/Parser/Errors/Types.hs
• compiler/GHC/Parser/Lexer.x
• compiler/GHC/Parser/PostProcess.hs
• compiler/GHC/Parser/PostProcess/Haddock.hs
• compiler/GHC/Parser/String.hs
• compiler/GHC/Parser/Types.hs
• compiler/GHC/Platform.hs
• compiler/GHC/Platform/Reg/Class.hs
• compiler/GHC/Platform/Reg/Class/NoVectors.hs
• compiler/GHC/Platform/Reg/Class/Separate.hs
• compiler/GHC/Platform/Reg/Class/Unified.hs
• compiler/GHC/Prelude/Basic.hs
• compiler/GHC/Rename/Bind.hs
• compiler/GHC/Rename/Env.hs
• compiler/GHC/Rename/Expr.hs
• compiler/GHC/Rename/Expr.hs-boot
• compiler/GHC/Rename/HsType.hs
• compiler/GHC/Rename/Module.hs
• compiler/GHC/Rename/Names.hs
• compiler/GHC/Rename/Pat.hs
• compiler/GHC/Rename/Splice.hs
• compiler/GHC/Rename/Splice.hs-boot
• compiler/GHC/Rename/Unbound.hs
• compiler/GHC/Rename/Utils.hs
• compiler/GHC/Runtime/Debugger.hs
• compiler/GHC/Runtime/Eval.hs
• compiler/GHC/Runtime/Heap/Inspect.hs
• compiler/GHC/Runtime/Heap/Layout.hs
• compiler/GHC/Runtime/Interpreter.hs
• + compiler/GHC/Runtime/Interpreter/C.hs
• + compiler/GHC/Runtime/Interpreter/Init.hs
• compiler/GHC/Runtime/Interpreter/JS.hs
• compiler/GHC/Runtime/Interpreter/Process.hs
• compiler/GHC/Runtime/Interpreter/Types.hs
• compiler/GHC/Runtime/Interpreter/Types/SymbolCache.hs
• compiler/GHC/Settings.hs
• compiler/GHC/Settings/IO.hs
• compiler/GHC/Stg/Debug.hs
• compiler/GHC/Stg/EnforceEpt.hs
• compiler/GHC/Stg/EnforceEpt/Rewrite.hs
• compiler/GHC/Stg/EnforceEpt/TagSig.hs
• compiler/GHC/Stg/EnforceEpt/Types.hs
• compiler/GHC/Stg/FVs.hs
• compiler/GHC/Stg/Lift/Analysis.hs
• compiler/GHC/Stg/Lift/Monad.hs
• compiler/GHC/Stg/Lift/Types.hs
• compiler/GHC/Stg/Lint.hs
• compiler/GHC/Stg/Pipeline.hs
• compiler/GHC/Stg/Syntax.hs
• compiler/GHC/Stg/Unarise.hs
• compiler/GHC/Stg/Utils.hs
• compiler/GHC/StgToByteCode.hs
• compiler/GHC/StgToCmm.hs
• compiler/GHC/StgToCmm/ArgRep.hs
• compiler/GHC/StgToCmm/Bind.hs
• compiler/GHC/StgToCmm/CgUtils.hs
• compiler/GHC/StgToCmm/Closure.hs
• compiler/GHC/StgToCmm/Expr.hs
• compiler/GHC/StgToCmm/ExtCode.hs
• compiler/GHC/StgToCmm/Foreign.hs
• compiler/GHC/StgToCmm/InfoTableProv.hs
• compiler/GHC/StgToCmm/Lit.hs
• compiler/GHC/StgToCmm/Monad.hs
• compiler/GHC/StgToCmm/Prim.hs
• compiler/GHC/StgToCmm/Utils.hs
• compiler/GHC/StgToJS/Apply.hs
• compiler/GHC/StgToJS/Arg.hs
• compiler/GHC/StgToJS/CodeGen.hs
• compiler/GHC/StgToJS/DataCon.hs
• compiler/GHC/StgToJS/Deps.hs
• compiler/GHC/StgToJS/Expr.hs
• compiler/GHC/StgToJS/ExprCtx.hs
• compiler/GHC/StgToJS/FFI.hs
• compiler/GHC/StgToJS/Heap.hs
• compiler/GHC/StgToJS/Linker/Linker.hs
• compiler/GHC/StgToJS/Linker/Opt.hs
• compiler/GHC/StgToJS/Linker/Types.hs
• compiler/GHC/StgToJS/Linker/Utils.hs
• compiler/GHC/StgToJS/Literal.hs
• compiler/GHC/StgToJS/Monad.hs
• compiler/GHC/StgToJS/Object.hs
• compiler/GHC/StgToJS/Prim.hs
• compiler/GHC/StgToJS/Regs.hs
• compiler/GHC/StgToJS/Rts/Rts.hs
• compiler/GHC/StgToJS/Rts/Types.hs
• compiler/GHC/StgToJS/Sinker/Collect.hs
• compiler/GHC/StgToJS/Sinker/Sinker.hs
• compiler/GHC/StgToJS/Sinker/StringsUnfloat.hs
• compiler/GHC/StgToJS/Types.hs
• compiler/GHC/StgToJS/Utils.hs
• compiler/GHC/SysTools.hs
• compiler/GHC/SysTools/Ar.hs
• compiler/GHC/SysTools/BaseDir.hs
• compiler/GHC/SysTools/Cpp.hs
• compiler/GHC/SysTools/Tasks.hs
• compiler/GHC/SysTools/Terminal.hs
• compiler/GHC/Tc/Deriv.hs
• compiler/GHC/Tc/Deriv/Functor.hs
• compiler/GHC/Tc/Deriv/Generate.hs
• compiler/GHC/Tc/Deriv/Generics.hs
• compiler/GHC/Tc/Deriv/Utils.hs
• compiler/GHC/Tc/Errors.hs
• compiler/GHC/Tc/Errors/Hole.hs
• compiler/GHC/Tc/Errors/Hole/FitTypes.hs
• compiler/GHC/Tc/Errors/Hole/Plugin.hs
• compiler/GHC/Tc/Errors/Ppr.hs
• compiler/GHC/Tc/Errors/Types.hs
• compiler/GHC/Tc/Errors/Types/PromotionErr.hs
• compiler/GHC/Tc/Gen/Annotation.hs
• compiler/GHC/Tc/Gen/App.hs
• compiler/GHC/Tc/Gen/Arrow.hs
• compiler/GHC/Tc/Gen/Bind.hs
• compiler/GHC/Tc/Gen/Default.hs
• compiler/GHC/Tc/Gen/Do.hs
• compiler/GHC/Tc/Gen/Export.hs
• compiler/GHC/Tc/Gen/Expr.hs
• compiler/GHC/Tc/Gen/Expr.hs-boot
• compiler/GHC/Tc/Gen/Foreign.hs
• compiler/GHC/Tc/Gen/Head.hs
• compiler/GHC/Tc/Gen/HsType.hs
• compiler/GHC/Tc/Gen/Match.hs
• compiler/GHC/Tc/Gen/Pat.hs
• compiler/GHC/Tc/Gen/Sig.hs
• compiler/GHC/Tc/Gen/Splice.hs
• compiler/GHC/Tc/Instance/Class.hs
• compiler/GHC/Tc/Instance/Family.hs
• compiler/GHC/Tc/Instance/FunDeps.hs
• compiler/GHC/Tc/Instance/Typeable.hs
• compiler/GHC/Tc/Module.hs
• compiler/GHC/Tc/Solver.hs
• compiler/GHC/Tc/Solver/Default.hs
• compiler/GHC/Tc/Solver/Dict.hs
• compiler/GHC/Tc/Solver/Equality.hs
• compiler/GHC/Tc/Solver/FunDeps.hs
• compiler/GHC/Tc/Solver/InertSet.hs
• compiler/GHC/Tc/Solver/Irred.hs
• compiler/GHC/Tc/Solver/Monad.hs
• compiler/GHC/Tc/Solver/Rewrite.hs
• compiler/GHC/Tc/Solver/Solve.hs
• compiler/GHC/Tc/Solver/Types.hs
• compiler/GHC/Tc/TyCl.hs
• compiler/GHC/Tc/TyCl/Build.hs
• compiler/GHC/Tc/TyCl/Instance.hs
• compiler/GHC/Tc/TyCl/PatSyn.hs
• compiler/GHC/Tc/TyCl/Utils.hs
• compiler/GHC/Tc/Types.hs
• compiler/GHC/Tc/Types/BasicTypes.hs
• compiler/GHC/Tc/Types/Constraint.hs
• compiler/GHC/Tc/Types/CtLoc.hs
• compiler/GHC/Tc/Types/ErrCtxt.hs
• compiler/GHC/Tc/Types/Evidence.hs
• compiler/GHC/Tc/Types/Origin.hs
• compiler/GHC/Tc/Utils/Backpack.hs
• compiler/GHC/Tc/Utils/Concrete.hs
• compiler/GHC/Tc/Utils/Env.hs
• compiler/GHC/Tc/Utils/Instantiate.hs
• compiler/GHC/Tc/Utils/Monad.hs
• compiler/GHC/Tc/Utils/TcMType.hs
• − compiler/GHC/Tc/Utils/TcMType.hs-boot
• compiler/GHC/Tc/Utils/TcType.hs
• compiler/GHC/Tc/Utils/Unify.hs
• compiler/GHC/Tc/Validity.hs
• compiler/GHC/Tc/Zonk/Monad.hs
• compiler/GHC/Tc/Zonk/TcType.hs
• compiler/GHC/Tc/Zonk/Type.hs
• compiler/GHC/ThToHs.hs
• compiler/GHC/Types/Annotations.hs
• + compiler/GHC/Types/Arity.hs
• compiler/GHC/Types/Avail.hs
• compiler/GHC/Types/Basic.hs
• compiler/GHC/Types/CompleteMatch.hs
• compiler/GHC/Types/CostCentre.hs
• compiler/GHC/Types/CostCentre/State.hs
• compiler/GHC/Types/DefaultEnv.hs
• compiler/GHC/Types/Demand.hs
• compiler/GHC/Types/Error.hs
• compiler/GHC/Types/Error/Codes.hs
• compiler/GHC/Types/FieldLabel.hs
• compiler/GHC/Types/Fixity.hs
• compiler/GHC/Types/ForeignCall.hs
• compiler/GHC/Types/ForeignStubs.hs
• compiler/GHC/Types/GREInfo.hs
• compiler/GHC/Types/Hint.hs
• compiler/GHC/Types/Hint/Ppr.hs
• compiler/GHC/Types/Id.hs
• compiler/GHC/Types/Id/Info.hs
• compiler/GHC/Types/Id/Make.hs
• + compiler/GHC/Types/InlinePragma.hs
• compiler/GHC/Types/Literal.hs
• compiler/GHC/Types/Name.hs
• compiler/GHC/Types/Name/Cache.hs
• compiler/GHC/Types/Name/Occurrence.hs
• compiler/GHC/Types/Name/Reader.hs
• compiler/GHC/Types/Name/Set.hs
• compiler/GHC/Types/PkgQual.hs
• compiler/GHC/Types/RepType.hs
• compiler/GHC/Types/SaneDouble.hs
• compiler/GHC/Types/SourceText.hs
• compiler/GHC/Types/SrcLoc.hs
• compiler/GHC/Types/Tickish.hs
• compiler/GHC/Types/TyThing.hs
• compiler/GHC/Types/Unique/DFM.hs
• compiler/GHC/Types/Unique/DSet.hs
• compiler/GHC/Types/Unique/FM.hs
• compiler/GHC/Types/Unique/Map.hs
• compiler/GHC/Types/Unique/SDFM.hs
• compiler/GHC/Types/Unique/Set.hs
• compiler/GHC/Types/Var.hs
• compiler/GHC/Types/Var/Env.hs
• compiler/GHC/Unit.hs
• compiler/GHC/Unit/Env.hs
• compiler/GHC/Unit/Finder.hs
• compiler/GHC/Unit/Home/PackageTable.hs
• compiler/GHC/Unit/Info.hs
• compiler/GHC/Unit/Module.hs
• compiler/GHC/Unit/Module/Deps.hs
• compiler/GHC/Unit/Module/Graph.hs
• compiler/GHC/Unit/Module/ModIface.hs
• compiler/GHC/Unit/Module/ModSummary.hs
• compiler/GHC/Unit/Module/Status.hs
• compiler/GHC/Unit/Module/Warnings.hs
• compiler/GHC/Unit/Module/WholeCoreBindings.hs
• compiler/GHC/Unit/State.hs
• compiler/GHC/Unit/Types.hs
• compiler/GHC/Unit/Types.hs-boot
• compiler/GHC/Utils/Binary.hs
• compiler/GHC/Utils/Binary/Typeable.hs
• compiler/GHC/Utils/Exception.hs
• compiler/GHC/Utils/Json.hs
• compiler/GHC/Utils/Logger.hs
• compiler/GHC/Utils/Misc.hs
• compiler/GHC/Utils/Monad.hs
• compiler/GHC/Utils/Monad/Codensity.hs
• compiler/GHC/Utils/Outputable.hs
• compiler/GHC/Utils/Panic.hs
• compiler/GHC/Utils/Panic/Plain.hs
• compiler/GHC/Utils/Ppr/Colour.hs
• compiler/GHC/Utils/Trace.hs
• compiler/GHC/Wasm/ControlFlow.hs
• compiler/GHC/Wasm/ControlFlow/FromCmm.hs
• compiler/Language/Haskell/Syntax.hs
• compiler/Language/Haskell/Syntax/Basic.hs
• compiler/Language/Haskell/Syntax/Binds.hs
• + compiler/Language/Haskell/Syntax/Binds/InlinePragma.hs
• compiler/Language/Haskell/Syntax/Decls.hs
• + compiler/Language/Haskell/Syntax/Decls/Foreign.hs
• + compiler/Language/Haskell/Syntax/Decls/Overlap.hs
• compiler/Language/Haskell/Syntax/Expr.hs
• compiler/Language/Haskell/Syntax/Expr.hs-boot
• compiler/Language/Haskell/Syntax/Extension.hs
• compiler/Language/Haskell/Syntax/ImpExp.hs
• compiler/Language/Haskell/Syntax/Lit.hs
• compiler/Language/Haskell/Syntax/Pat.hs
• compiler/Language/Haskell/Syntax/Pat.hs-boot
• compiler/Language/Haskell/Syntax/Type.hs
• compiler/Setup.hs
• compiler/ghc.cabal.in
• config.guess
• config.sub
• configure.ac
• distrib/configure.ac.in
• − docs/Makefile
• − docs/storage-mgt/Makefile
• + docs/users_guide/10.0.1-notes.rst
• docs/users_guide/9.16.1-notes.rst
• − docs/users_guide/Makefile
• docs/users_guide/bugs.rst
• docs/users_guide/conf.py
• docs/users_guide/debug-info.rst
• docs/users_guide/debugging.rst
• docs/users_guide/eventlog-formats.rst
• docs/users_guide/extending_ghc.rst
• docs/users_guide/exts/arrows.rst
• docs/users_guide/exts/data_kinds.rst
• docs/users_guide/exts/derive_any_class.rst
• docs/users_guide/exts/deriving_extra.rst
• docs/users_guide/exts/deriving_inferred.rst
• docs/users_guide/exts/deriving_strategies.rst
• docs/users_guide/exts/explicit_namespaces.rst
• docs/users_guide/exts/gadt.rst
• docs/users_guide/exts/gadt_syntax.rst
• docs/users_guide/exts/generics.rst
• docs/users_guide/exts/multiway_if.rst
• docs/users_guide/exts/overloaded_labels.rst
• docs/users_guide/exts/overloaded_strings.rst
• docs/users_guide/exts/pattern_synonyms.rst
• docs/users_guide/exts/poly_kinds.rst
• docs/users_guide/exts/pragmas.rst
• docs/users_guide/exts/primitives.rst
• docs/users_guide/exts/rank_polymorphism.rst
• docs/users_guide/exts/rebindable_syntax.rst
• docs/users_guide/exts/required_type_arguments.rst
• docs/users_guide/exts/roles.rst
• docs/users_guide/exts/scoped_type_variables.rst
• docs/users_guide/exts/standalone_deriving.rst
• docs/users_guide/exts/table.rst
• docs/users_guide/exts/template_haskell.rst
• docs/users_guide/exts/tuple_sections.rst
• docs/users_guide/exts/type_data.rst
• docs/users_guide/exts/type_defaulting.rst
• docs/users_guide/exts/type_families.rst
• docs/users_guide/ghci.rst
• docs/users_guide/gone_wrong.rst
• docs/users_guide/hints.rst
• docs/users_guide/index.rst
• docs/users_guide/javascript.rst
• docs/users_guide/packages.rst
• docs/users_guide/phases.rst
• docs/users_guide/profiling.rst
• docs/users_guide/rtd-theme/layout.html
• docs/users_guide/runtime_control.rst
• docs/users_guide/separate_compilation.rst
• docs/users_guide/using-concurrent.rst
• docs/users_guide/using-optimisation.rst
• docs/users_guide/using.rst
• docs/users_guide/wasm.rst
• docs/users_guide/win32-dlls.rst
• − driver/Makefile
• − driver/ghc/Makefile
• − driver/ghci/Makefile
• driver/ghci/ghci.c
• − driver/haddock/Makefile
• driver/utils/cwrapper.c
• driver/utils/isMinTTY.c
• − driver/utils/merge_sections.ld
• − driver/utils/merge_sections_pe.ld
• ghc/GHC/Driver/Session/Lint.hs
• ghc/GHC/Driver/Session/Mode.hs
• ghc/GHCi/Leak.hs
• ghc/GHCi/UI.hs
• ghc/GHCi/UI/Exception.hs
• ghc/GHCi/UI/Info.hs
• ghc/GHCi/UI/Monad.hs
• ghc/Main.hs
• − ghc/Makefile
• ghc/ghc-bin.cabal.in
• hadrian/bindist/cwrappers/cwrapper.c
• hadrian/build-cabal
• hadrian/cabal.project
• hadrian/cfg/default.host.target.in
• hadrian/cfg/default.target.in
• hadrian/doc/flavours.md
• hadrian/doc/user-settings.md
• hadrian/hadrian.cabal
• hadrian/src/Base.hs
• hadrian/src/Builder.hs
• hadrian/src/Context.hs
• hadrian/src/Flavour.hs
• hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
• hadrian/src/Hadrian/Haskell/Cabal/Type.hs
• hadrian/src/Hadrian/Haskell/Hash.hs
• hadrian/src/Hadrian/Oracles/ArgsHash.hs
• hadrian/src/Hadrian/Oracles/Cabal/Type.hs
• hadrian/src/Hadrian/Oracles/DirectoryContents.hs
• hadrian/src/Hadrian/Oracles/Path.hs
• hadrian/src/Hadrian/Oracles/TextFile.hs
• hadrian/src/Hadrian/Utilities.hs
• hadrian/src/Oracles/Flag.hs
• hadrian/src/Oracles/Flavour.hs
• hadrian/src/Oracles/ModuleFiles.hs
• hadrian/src/Oracles/Setting.hs
• hadrian/src/Packages.hs
• hadrian/src/Rules.hs
• hadrian/src/Rules/BinaryDist.hs
• hadrian/src/Rules/CabalReinstall.hs
• hadrian/src/Rules/Compile.hs
• hadrian/src/Rules/Docspec.hs
• hadrian/src/Rules/Documentation.hs
• hadrian/src/Rules/Generate.hs
• hadrian/src/Rules/Gmp.hs
• − hadrian/src/Rules/Libffi.hs
• hadrian/src/Rules/Library.hs
• hadrian/src/Rules/Lint.hs
• hadrian/src/Rules/Program.hs
• hadrian/src/Rules/Register.hs
• hadrian/src/Rules/Rts.hs
• hadrian/src/Rules/SourceDist.hs
• hadrian/src/Rules/Test.hs
• hadrian/src/Rules/ToolArgs.hs
• hadrian/src/Settings.hs
• hadrian/src/Settings/Builders/Cabal.hs
• hadrian/src/Settings/Builders/Cc.hs
• hadrian/src/Settings/Builders/Configure.hs
• hadrian/src/Settings/Builders/GenPrimopCode.hs
• hadrian/src/Settings/Builders/Ghc.hs
• hadrian/src/Settings/Builders/Hsc2Hs.hs
• hadrian/src/Settings/Builders/Make.hs
• − hadrian/src/Settings/Builders/MergeObjects.hs
• hadrian/src/Settings/Builders/RunTest.hs
• hadrian/src/Settings/Builders/SplitSections.hs
• hadrian/src/Settings/Default.hs
• hadrian/src/Settings/Flavours/Benchmark.hs
• hadrian/src/Settings/Flavours/Development.hs
• hadrian/src/Settings/Flavours/GhcInGhci.hs
• hadrian/src/Settings/Flavours/Performance.hs
• hadrian/src/Settings/Flavours/Quick.hs
• hadrian/src/Settings/Flavours/QuickCross.hs
• hadrian/src/Settings/Flavours/Quickest.hs
• hadrian/src/Settings/Flavours/Validate.hs
• hadrian/src/Settings/Packages.hs
• hadrian/src/Settings/Program.hs
• hadrian/src/Settings/Warnings.hs
• hadrian/stack.yaml
• hadrian/stack.yaml.lock
• − libffi-tarballs
• libraries/Cabal
• − libraries/Makefile
• libraries/base/base.cabal.in
• libraries/base/changelog.md
• libraries/base/src/Control/Arrow.hs
• libraries/base/src/Control/Concurrent.hs
• libraries/base/src/Data/Array/Byte.hs
• libraries/base/src/Data/Bifoldable1.hs
• libraries/base/src/Data/Bool.hs
• libraries/base/src/Data/Ix.hs
• libraries/base/src/Data/List.hs
• libraries/base/src/Data/List/NonEmpty.hs
• + libraries/base/src/Data/List/NubOrdSet.hs
• libraries/base/src/GHC/Conc.hs
• libraries/base/src/GHC/Conc/Sync.hs
• − libraries/base/src/GHC/Desugar.hs
• libraries/base/src/GHC/Exts.hs
• − libraries/base/src/GHC/JS/Prim/Internal/Build.hs
• libraries/base/src/GHC/Num.hs
• − libraries/base/src/GHC/Num/BigNat.hs
• − libraries/base/src/GHC/Num/Integer.hs
• − libraries/base/src/GHC/Num/Natural.hs
• libraries/base/src/System/CPUTime/Utils.hs
• libraries/base/src/System/IO.hs
• + libraries/base/src/System/IO/OS.hs
• libraries/base/src/System/Timeout.hs
• libraries/base/tests/IO/T12010/cbits/initWinSock.c
• libraries/base/tests/IO/all.T
• + libraries/base/tests/IO/osHandles001FileDescriptors.hs
• + libraries/base/tests/IO/osHandles001FileDescriptors.stdout
• + libraries/base/tests/IO/osHandles001WindowsHandles.hs
• + libraries/base/tests/IO/osHandles001WindowsHandles.stdout
• + libraries/base/tests/IO/osHandles002FileDescriptors.hs
• + libraries/base/tests/IO/osHandles002FileDescriptors.stderr
• + libraries/base/tests/IO/osHandles002FileDescriptors.stdin
• + libraries/base/tests/IO/osHandles002FileDescriptors.stdout
• + libraries/base/tests/IO/osHandles002WindowsHandles.hs
• + libraries/base/tests/IO/osHandles002WindowsHandles.stderr
• + libraries/base/tests/IO/osHandles002WindowsHandles.stdin
• + libraries/base/tests/IO/osHandles002WindowsHandles.stdout
• libraries/base/tests/T23454.stderr
• libraries/base/tests/perf/Makefile
• libraries/deepseq
• libraries/directory
• − libraries/doc/Makefile
• libraries/exceptions
• libraries/ghc-bignum/ghc-bignum.cabal
• libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
• libraries/ghc-boot/GHC/Unit/Database.hs
• libraries/ghc-compact/tests/all.T
• libraries/ghc-experimental/CHANGELOG.md
• libraries/ghc-experimental/ghc-experimental.cabal.in
• libraries/ghc-experimental/src/GHC/Exception/Backtrace/Experimental.hs
• libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs
• libraries/ghc-experimental/src/GHC/TypeNats/Experimental.hs
• + libraries/ghc-experimental/tests/Makefile
• + libraries/ghc-experimental/tests/all.T
• + libraries/ghc-experimental/tests/backtraces/Makefile
• + libraries/ghc-experimental/tests/backtraces/T26806a.hs
• + libraries/ghc-experimental/tests/backtraces/T26806a.stderr
• + libraries/ghc-experimental/tests/backtraces/T26806b.hs
• + libraries/ghc-experimental/tests/backtraces/T26806b.stderr
• + libraries/ghc-experimental/tests/backtraces/T26806c.hs
• + libraries/ghc-experimental/tests/backtraces/T26806c.stderr
• + libraries/ghc-experimental/tests/backtraces/all.T
• libraries/ghc-internal/cbits/consUtils.c
• libraries/ghc-internal/configure.ac
• libraries/ghc-internal/ghc-internal.buildinfo.in
• libraries/ghc-internal/ghc-internal.cabal.in
• libraries/ghc-internal/include/HsIntegerGmp.h.in
• libraries/ghc-internal/src/GHC/Internal/CString.hs
• libraries/ghc-internal/src/GHC/Internal/Classes.hs
• + libraries/ghc-internal/src/GHC/Internal/Classes/IP.hs
• libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs
• libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs
• libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs
• libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot
• libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs
• libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc
• libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs
• libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs
• libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs
• libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs
• − libraries/ghc-internal/src/GHC/Internal/Data/Bool.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Data.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Function.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs
• − libraries/ghc-internal/src/GHC/Internal/Data/Ix.hs
• libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs
• libraries/ghc-internal/src/GHC/Internal/Data/Version.hs
• libraries/ghc-internal/src/GHC/Internal/Err.hs
• libraries/ghc-internal/src/GHC/Internal/Event/Thread.hs
• libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs
• libraries/ghc-internal/src/GHC/Internal/Event/Windows/Thread.hs
• libraries/ghc-internal/src/GHC/Internal/Exception.hs
• libraries/ghc-internal/src/GHC/Internal/Exception/Context.hs
• libraries/ghc-internal/src/GHC/Internal/Exts.hs
• libraries/ghc-internal/src/GHC/Internal/Float.hs
• libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs
• libraries/ghc-internal/src/GHC/Internal/Heap/Closures.hs
• libraries/ghc-internal/src/GHC/Internal/IO/FD.hs
• libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs
• libraries/ghc-internal/src/GHC/Internal/JS/Foreign/Callback.hs
• libraries/ghc-internal/src/GHC/Internal/JS/Prim.hs
• libraries/ghc-internal/src/GHC/Internal/JS/Prim/Internal/Build.hs
• libraries/ghc-internal/src/GHC/Internal/List.hs
• libraries/ghc-internal/src/GHC/Internal/Magic.hs
• libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc
• + libraries/ghc-internal/src/GHC/Internal/STM.hs
• libraries/ghc-internal/src/GHC/Internal/Stack/Annotation.hs
• libraries/ghc-internal/src/GHC/Internal/Stack/Decode.hs
• libraries/ghc-internal/src/GHC/Internal/System/Environment/ExecutablePath.hsc
• libraries/ghc-internal/src/GHC/Internal/System/IO.hs
• + libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Lift.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Syntax.hs
• libraries/ghc-internal/src/GHC/Internal/Tuple.hs
• libraries/ghc-internal/src/GHC/Internal/TypeError.hs
• libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Exports.hs
• libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Imports.hs
• libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Types.hs
• + libraries/ghc-internal/tests/backtraces/T15395.hs
• + libraries/ghc-internal/tests/backtraces/T15395.stdout
• libraries/ghc-internal/tests/backtraces/all.T
• libraries/ghc-internal/tests/stack-annotation/all.T
• libraries/ghc-internal/tests/stack-annotation/ann_frame001.stdout
• libraries/ghc-internal/tests/stack-annotation/ann_frame002.stdout
• libraries/ghc-internal/tests/stack-annotation/ann_frame003.stdout
• libraries/ghc-internal/tests/stack-annotation/ann_frame004.stdout
• + libraries/ghc-internal/tests/stack-annotation/ann_frame005.hs
• + libraries/ghc-internal/tests/stack-annotation/ann_frame005.stdout
• libraries/ghc-platform/src/GHC/Platform/ArchOS.hs
• libraries/ghci/GHCi/Server.hs
• libraries/haskeline
• + libraries/libffi-clib
• libraries/mtl
• libraries/template-haskell/vendored-filepath/System/FilePath/Posix.hs
• libraries/template-haskell/vendored-filepath/System/FilePath/Windows.hs
• libraries/text
• libraries/transformers
• libraries/xhtml
• linters/lint-codes/LintCodes/Static.hs
• − linters/lint-codes/Makefile
• − linters/lint-notes/Makefile
• llvm-passes
• llvm-targets
• − m4/find_ghc_bootstrap_prog.m4
• m4/fp_cmm_cpp_cmd_with_args.m4
• − m4/fp_copy_shellvar.m4
• + m4/fp_linker_supports_verbatim.m4
• − m4/fp_prog_ld_flag.m4
• − m4/fp_prog_sort.m4
• m4/fptools_happy.m4
• m4/ghc_select_file_extensions.m4
• m4/prep_target_file.m4
• mk/system-cxx-std-lib-1.0.conf.in
• − mk/win32-tarballs.md5sum
• packages
• + rts/.ubsan-suppressions
• rts/AllocArray.c
• rts/AllocArray.h
• rts/Apply.cmm
• rts/ClosureTable.c
• rts/Compact.cmm
• rts/ContinuationOps.cmm
• rts/Exception.cmm
• rts/Heap.c
• rts/Interpreter.c
• rts/Jumps.h
• − rts/Makefile
• rts/PrimOps.cmm
• rts/RtsFlags.c
• rts/RtsMessages.c
• rts/StgMiscClosures.cmm
• rts/StgStartup.cmm
• rts/Threads.c
• rts/Trace.c
• rts/Weak.c
• rts/configure.ac
• rts/eventlog/EventLog.c
• rts/include/Cmm.h
• − rts/include/Makefile
• rts/include/Stg.h
• rts/include/rts/Flags.h
• rts/include/rts/Messages.h
• rts/include/rts/ghc_ffi.h
• rts/include/stg/Ticky.h
• rts/include/stg/Types.h
• rts/linker/Elf.c
• rts/linker/InitFini.c
• rts/linker/LoadArchive.c
• rts/linker/PEi386.c
• rts/prim/atomic.c
• rts/prim/mulIntMayOflo.c
• rts/rts.buildinfo.in
• rts/rts.cabal
• rts/sm/Evac.c
• rts/sm/Evac_thr.c → rts/sm/Evac_par.c
• rts/sm/Sanity.c
• rts/sm/Scav_thr.c → rts/sm/Scav_par.c
• rts/sm/Storage.c
• − rts/win32/libHSffi.def
• − rts/win32/libHSghc-internal.def
• − rts/win32/libHSghc-prim.def
• testsuite/config/ghc
• + testsuite/driver/_elffile.py
• testsuite/driver/cpu_features.py
• − testsuite/driver/kill_extra_files.py
• testsuite/driver/perf_notes.py
• testsuite/driver/runtests.py
• testsuite/driver/testglobals.py
• testsuite/driver/testlib.py
• testsuite/driver/testutil.py
• testsuite/ghc-config/ghc-config.hs
• testsuite/mk/boilerplate.mk
• testsuite/mk/test.mk
• testsuite/tests/arrows/should_compile/T21301.stderr
• testsuite/tests/backpack/cabal/bkpcabal08/bkpcabal08.stdout
• testsuite/tests/backpack/should_fail/T19244a.stderr
• + testsuite/tests/bytecode/T23973.hs
• + testsuite/tests/bytecode/T23973.script
• + testsuite/tests/bytecode/T23973.stdout
• + testsuite/tests/bytecode/T26565.hs
• + testsuite/tests/bytecode/T26565.script
• + testsuite/tests/bytecode/T26565.stdout
• + testsuite/tests/bytecode/T26640.hs
• + testsuite/tests/bytecode/T26640.script
• + testsuite/tests/bytecode/T26640.stdout
• testsuite/tests/bytecode/all.T
• + testsuite/tests/cabal/Bytecode.hs
• + testsuite/tests/cabal/BytecodeForeign.c
• + testsuite/tests/cabal/BytecodeForeign.hs
• testsuite/tests/cabal/Makefile
• testsuite/tests/cabal/all.T
• + testsuite/tests/cabal/bytecode.pkg
• + testsuite/tests/cabal/bytecode.script
• + testsuite/tests/cabal/bytecode_foreign.pkg
• + testsuite/tests/cabal/bytecode_foreign.script
• testsuite/tests/cabal/ghcpkg03.stderr
• testsuite/tests/cabal/ghcpkg03.stderr-mingw32
• testsuite/tests/cabal/ghcpkg05.stderr
• testsuite/tests/cabal/ghcpkg05.stderr-mingw32
• + testsuite/tests/cabal/pkg_bytecode.stderr
• + testsuite/tests/cabal/pkg_bytecode.stdout
• + testsuite/tests/cabal/pkg_bytecode_foreign.stderr
• + testsuite/tests/cabal/pkg_bytecode_foreign.stdout
• + testsuite/tests/cabal/pkg_bytecode_with_gbc.stderr
• + testsuite/tests/cabal/pkg_bytecode_with_gbc.stdout
• + testsuite/tests/cabal/pkg_bytecode_with_o.stderr
• + testsuite/tests/cabal/pkg_bytecode_with_o.stdout
• + testsuite/tests/cmm/opt/T25664.hs
• + testsuite/tests/cmm/opt/T25664.stdout
• testsuite/tests/cmm/opt/all.T
• testsuite/tests/codeGen/should_gen_asm/all.T
• + testsuite/tests/codeGen/should_gen_asm/avx512-int64-minmax.asm
• + testsuite/tests/codeGen/should_gen_asm/avx512-int64-minmax.hs
• + testsuite/tests/codeGen/should_gen_asm/avx512-int64-mul.asm
• + testsuite/tests/codeGen/should_gen_asm/avx512-int64-mul.hs
• + testsuite/tests/codeGen/should_gen_asm/avx512-word64-minmax.asm
• + testsuite/tests/codeGen/should_gen_asm/avx512-word64-minmax.hs
• testsuite/tests/codeGen/should_run/CgStaticPointers.hs
• testsuite/tests/codeGen/should_run/CgStaticPointersNoFullLazyness.hs
• + testsuite/tests/codeGen/should_run/T24016.hs
• + testsuite/tests/codeGen/should_run/T24016.stdout
• + testsuite/tests/codeGen/should_run/T26537.hs
• + testsuite/tests/codeGen/should_run/T26537.stdout
• testsuite/tests/codeGen/should_run/all.T
• testsuite/tests/count-deps/CountDepsAst.stdout
• testsuite/tests/count-deps/CountDepsParser.stdout
• testsuite/tests/deSugar/should_fail/DsStrictFail.stderr
• testsuite/tests/deSugar/should_run/T20024.stderr
• testsuite/tests/deSugar/should_run/dsrun005.stderr
• testsuite/tests/deSugar/should_run/dsrun007.stderr
• testsuite/tests/deSugar/should_run/dsrun008.stderr
• + testsuite/tests/default/T25825.hs
• testsuite/tests/default/all.T
• testsuite/tests/dependent/should_fail/T11334b.stderr
• testsuite/tests/deriving/should_fail/T1496.stderr
• testsuite/tests/deriving/should_fail/T4846.stderr
• testsuite/tests/deriving/should_fail/T5498.stderr
• testsuite/tests/deriving/should_fail/T6147.stderr
• testsuite/tests/deriving/should_fail/T7148.stderr
• testsuite/tests/deriving/should_fail/T7148a.stderr
• testsuite/tests/deriving/should_fail/T8984.stderr
• testsuite/tests/deriving/should_fail/deriving-via-fail.stderr
• testsuite/tests/deriving/should_fail/deriving-via-fail4.stderr
• testsuite/tests/deriving/should_fail/deriving-via-fail5.stderr
• testsuite/tests/deriving/should_run/T9576.stderr
• testsuite/tests/diagnostic-codes/codes.stdout
• + testsuite/tests/dmdanal/should_run/T26748.hs
• + testsuite/tests/dmdanal/should_run/T26748.stdout
• testsuite/tests/dmdanal/should_run/all.T
• testsuite/tests/driver/Makefile
• testsuite/tests/driver/T16318/Makefile
• testsuite/tests/driver/T18125/Makefile
• testsuite/tests/driver/T20030/test1/all.T
• testsuite/tests/driver/T20030/test2/all.T
• testsuite/tests/driver/T20030/test3/all.T
• testsuite/tests/driver/T20030/test4/all.T
• testsuite/tests/driver/T20030/test5/all.T
• testsuite/tests/driver/T20030/test6/all.T
• + testsuite/tests/driver/T20696/T20696.stderr-ext-interp
• testsuite/tests/driver/T20696/all.T
• + testsuite/tests/driver/T26551.hs
• + testsuite/tests/driver/T26551.stderr
• testsuite/tests/driver/T8526/T8526.script
• testsuite/tests/driver/all.T
• testsuite/tests/driver/bytecode-object/Makefile
• testsuite/tests/driver/bytecode-object/all.T
• testsuite/tests/driver/bytecode-object/bytecode_object19.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object20.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object21.stderr
• + testsuite/tests/driver/bytecode-object/bytecode_object21.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object23.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object24.stdout
• testsuite/tests/driver/dynamicToo/dynamicToo001/Makefile
• testsuite/tests/driver/fat-iface/all.T
• + testsuite/tests/driver/fat-iface/fat012.stderr-ext-interp
• testsuite/tests/driver/fat-iface/fat014.script
• + testsuite/tests/driver/fat-iface/fat015.stderr-ext-interp
• + testsuite/tests/driver/fully-static/Hello.hs
• + testsuite/tests/driver/fully-static/Makefile
• + testsuite/tests/driver/fully-static/all.T
• + testsuite/tests/driver/fully-static/fully-static.stdout
• + testsuite/tests/driver/fully-static/test/Test.hs
• + testsuite/tests/driver/fully-static/test/test.pkg
• testsuite/tests/driver/implicit-dyn-too/Makefile
• testsuite/tests/driver/j-space/jspace.hs
• + testsuite/tests/driver/mostly-static/Hello.hs
• + testsuite/tests/driver/mostly-static/Makefile
• + testsuite/tests/driver/mostly-static/all.T
• + testsuite/tests/driver/mostly-static/mostly-static.stdout
• + testsuite/tests/driver/mostly-static/test/test.c
• + testsuite/tests/driver/mostly-static/test/test.h
• + testsuite/tests/driver/mostly-static/test/test.pkg
• testsuite/tests/driver/multipleHomeUnits/all.T
• testsuite/tests/driver/multipleHomeUnits/multipleHomeUnits_recomp_th.stdout
• + testsuite/tests/driver/recomp26183/M.hs
• + testsuite/tests/driver/recomp26183/M2A.hs
• + testsuite/tests/driver/recomp26183/M2B.hs
• + testsuite/tests/driver/recomp26183/Makefile
• + testsuite/tests/driver/recomp26183/all.T
• + testsuite/tests/driver/recomp26183/recomp26183.stderr
• + testsuite/tests/driver/recomp26705/M.hs
• + testsuite/tests/driver/recomp26705/M2A.hs
• + testsuite/tests/driver/recomp26705/M2B.hs
• + testsuite/tests/driver/recomp26705/Makefile
• + testsuite/tests/driver/recomp26705/all.T
• + testsuite/tests/driver/recomp26705/recomp26705.stderr
• testsuite/tests/ffi/should_run/all.T
• testsuite/tests/gadt/CasePrune.stderr
• testsuite/tests/generics/T10604/T10604_deriving.stderr
• + testsuite/tests/ghc-api/TypeMapStringLiteral.hs
• testsuite/tests/ghc-api/all.T
• testsuite/tests/ghc-e/should_fail/T9930fail.stderr
• testsuite/tests/ghc-e/should_fail/all.T
• testsuite/tests/ghci.debugger/scripts/T26042b.stdout
• testsuite/tests/ghci.debugger/scripts/T26042c.stdout
• testsuite/tests/ghci.debugger/scripts/T26042d2.stdout
• testsuite/tests/ghci.debugger/scripts/T26042f2.stdout
• testsuite/tests/ghci.debugger/scripts/T8487.stdout
• testsuite/tests/ghci.debugger/scripts/break011.stdout
• testsuite/tests/ghci.debugger/scripts/break017.stdout
• testsuite/tests/ghci.debugger/scripts/break025.stdout
• testsuite/tests/ghci.debugger/scripts/print012.stdout
• − testsuite/tests/ghci/linking/T11531.stderr
• testsuite/tests/ghci/prog018/prog018.script
• testsuite/tests/ghci/scripts/Defer02.stderr
• testsuite/tests/ghci/scripts/ListTuplePunsPpr.stdout
• testsuite/tests/ghci/scripts/T10321.stdout
• testsuite/tests/ghci/scripts/T10963.stderr
• testsuite/tests/ghci/scripts/T13869.script
• testsuite/tests/ghci/scripts/T13997.script
• testsuite/tests/ghci/scripts/T15325.stderr
• testsuite/tests/ghci/scripts/T17669.script
• testsuite/tests/ghci/scripts/T18330.script
• testsuite/tests/ghci/scripts/T18330.stdout
• testsuite/tests/ghci/scripts/T1914.script
• testsuite/tests/ghci/scripts/T20150.stdout
• testsuite/tests/ghci/scripts/T20217.script
• testsuite/tests/ghci/scripts/T24459.stdout
• testsuite/tests/ghci/scripts/T4175.stdout
• testsuite/tests/ghci/scripts/T6105.script
• testsuite/tests/ghci/scripts/T7730.stdout
• testsuite/tests/ghci/scripts/T8042.script
• testsuite/tests/ghci/scripts/T8042recomp.script
• testsuite/tests/ghci/scripts/T8353.stderr
• testsuite/tests/ghci/scripts/T8959b.stderr
• testsuite/tests/ghci/scripts/ghci051.stderr
• testsuite/tests/ghci/scripts/ghci065.stdout
• testsuite/tests/ghci/should_run/Makefile
• testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.hs
• testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr
• testsuite/tests/indexed-types/should_compile/CEqCanOccursCheck.hs
• testsuite/tests/indexed-types/should_compile/T12538.stderr
• testsuite/tests/indexed-types/should_fail/T12522a.hs
• testsuite/tests/indexed-types/should_fail/T21092.hs
• − testsuite/tests/indexed-types/should_fail/T21092.stderr
• testsuite/tests/indexed-types/should_fail/T26176.stderr
• testsuite/tests/indexed-types/should_fail/T9580.stderr
• testsuite/tests/indexed-types/should_fail/all.T
• testsuite/tests/interface-stability/base-exports.stdout
• testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
• testsuite/tests/interface-stability/base-exports.stdout-mingw32
• testsuite/tests/interface-stability/base-exports.stdout-ws-32
• testsuite/tests/interface-stability/ghc-experimental-exports.stdout
• testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32
• testsuite/tests/interface-stability/ghc-prim-exports.stdout
• testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32
• testsuite/tests/interface-stability/template-haskell-exports.stdout
• testsuite/tests/jsffi/all.T
• + testsuite/tests/jsffi/bytearrayarg.hs
• + testsuite/tests/jsffi/bytearrayarg.mjs
• + testsuite/tests/jsffi/bytearrayarg.stdout
• + testsuite/tests/linear/should_compile/LinearEtaExpansions.hs
• testsuite/tests/linear/should_compile/all.T
• testsuite/tests/linear/should_fail/LinearRole.stderr
• testsuite/tests/linear/should_fail/TypeClass.hs
• testsuite/tests/linear/should_fail/TypeClass.stderr
• testsuite/tests/linear/should_run/LinearGhci.stdout
• + testsuite/tests/linear/should_run/T26311.hs
• + testsuite/tests/linear/should_run/T26311.stdout
• testsuite/tests/linear/should_run/all.T
• testsuite/tests/linters/regex-linters/check-rts-includes.py
• testsuite/tests/mdo/should_fail/mdofail006.stderr
• + testsuite/tests/module/T25901_exp_plain_wc.hs
• + testsuite/tests/module/T25901_exp_plain_wc.stderr
• + testsuite/tests/module/T25901_imp_plain_wc.hs
• + testsuite/tests/module/T25901_imp_plain_wc.stderr
• testsuite/tests/module/all.T
• testsuite/tests/numeric/should_compile/T16402.stderr-ws-64
• testsuite/tests/numeric/should_run/all.T
• testsuite/tests/numeric/should_run/foundation.hs
• testsuite/tests/numeric/should_run/foundation.stdout
• testsuite/tests/overloadedrecflds/should_fail/DRFHoleFits.stderr
• testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
• testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
• testsuite/tests/parser/should_compile/T14189.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail10.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail13.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail8.stderr
• testsuite/tests/parser/should_fail/T20654a.stderr
• + testsuite/tests/parser/should_fail/T26860ppr.hs
• + testsuite/tests/parser/should_fail/T26860ppr.stderr
• testsuite/tests/parser/should_fail/all.T
• testsuite/tests/patsyn/should_fail/all.T
• + testsuite/tests/patsyn/should_fail/import-syntax-no-ext.hs
• + testsuite/tests/patsyn/should_fail/import-syntax-no-ext.stderr
• testsuite/tests/patsyn/should_run/ghci.stderr
• testsuite/tests/perf/compiler/all.T
• testsuite/tests/perf/compiler/hard_hole_fits.stderr
• testsuite/tests/perf/should_run/all.T
• + testsuite/tests/plugins/T23110.hs
• + testsuite/tests/plugins/T23110.script
• + testsuite/tests/plugins/T23110.stdout
• testsuite/tests/plugins/all.T
• testsuite/tests/plugins/test-hole-plugin.stderr
• testsuite/tests/pmcheck/should_compile/T15753c.hs
• + testsuite/tests/pmcheck/should_compile/T15753c.stderr
• testsuite/tests/pmcheck/should_compile/T15753d.hs
• + testsuite/tests/pmcheck/should_compile/T15753d.stderr
• + testsuite/tests/pmcheck/should_compile/T22652.hs
• + testsuite/tests/pmcheck/should_compile/T22652a.hs
• + testsuite/tests/pmcheck/should_compile/T24867.hs
• + testsuite/tests/pmcheck/should_compile/T24867.stderr
• testsuite/tests/pmcheck/should_compile/all.T
• testsuite/tests/pmcheck/should_compile/pmcOrPats.stderr
• + testsuite/tests/polykinds/T13882.hs
• testsuite/tests/polykinds/all.T
• testsuite/tests/process/all.T
• testsuite/tests/quantified-constraints/T15316A.stderr
• testsuite/tests/quantified-constraints/T17267.stderr
• testsuite/tests/quantified-constraints/T17267a.stderr
• testsuite/tests/quantified-constraints/T17267b.stderr
• testsuite/tests/quantified-constraints/T17267c.stderr
• testsuite/tests/quantified-constraints/T17267e.stderr
• testsuite/tests/quantified-constraints/T17458.stderr
• testsuite/tests/quotes/LiftErrMsgDefer.stderr
• + testsuite/tests/rename/should_compile/T25901_exp_1.hs
• + testsuite/tests/rename/should_compile/T25901_exp_1_helper.hs
• + testsuite/tests/rename/should_compile/T25901_exp_2.hs
• + testsuite/tests/rename/should_compile/T25901_exp_2_helper.hs
• + testsuite/tests/rename/should_compile/T25901_imp_hq.hs
• + testsuite/tests/rename/should_compile/T25901_imp_hu.hs
• + testsuite/tests/rename/should_compile/T25901_imp_sq.hs
• + testsuite/tests/rename/should_compile/T25901_imp_su.hs
• + testsuite/tests/rename/should_compile/T25901_sub_e.hs
• + testsuite/tests/rename/should_compile/T25901_sub_f.hs
• + testsuite/tests/rename/should_compile/T25901_sub_f.stderr
• + testsuite/tests/rename/should_compile/T25901_sub_g.hs
• + testsuite/tests/rename/should_compile/T25901_sub_g.stderr
• + testsuite/tests/rename/should_compile/T25901_sub_g_helper.hs
• testsuite/tests/rename/should_compile/all.T
• testsuite/tests/rename/should_fail/RnStaticPointersFail01.stderr
• testsuite/tests/rename/should_fail/RnStaticPointersFail03.stderr
• testsuite/tests/rename/should_fail/T23570b.stderr
• + testsuite/tests/rename/should_fail/T25901_exp_fail_1.hs
• + testsuite/tests/rename/should_fail/T25901_exp_fail_1.stderr
• + testsuite/tests/rename/should_fail/T25901_exp_fail_1_helper.hs
• + testsuite/tests/rename/should_fail/T25901_exp_fail_2.hs
• + testsuite/tests/rename/should_fail/T25901_exp_fail_2.stderr
• + testsuite/tests/rename/should_fail/T25901_exp_fail_2_helper.hs
• + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_5.hs
• + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_5.stderr
• + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_6.hs
• + testsuite/tests/rename/should_fail/T25901_imp_hq_fail_6.stderr
• + testsuite/tests/rename/should_fail/T25901_imp_hu_fail_4.hs
• + testsuite/tests/rename/should_fail/T25901_imp_hu_fail_4.stderr
• + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_2.hs
• + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_2.stderr
• + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_3.hs
• + testsuite/tests/rename/should_fail/T25901_imp_sq_fail_3.stderr
• + testsuite/tests/rename/should_fail/T25901_imp_su_fail_1.hs
• + testsuite/tests/rename/should_fail/T25901_imp_su_fail_1.stderr
• + testsuite/tests/rename/should_fail/T25901_sub_a.hs
• + testsuite/tests/rename/should_fail/T25901_sub_a.stderr
• + testsuite/tests/rename/should_fail/T25901_sub_b.hs
• + testsuite/tests/rename/should_fail/T25901_sub_b.stderr
• + testsuite/tests/rename/should_fail/T25901_sub_c.hs
• + testsuite/tests/rename/should_fail/T25901_sub_c.stderr
• + testsuite/tests/rename/should_fail/T25901_sub_c_helper.hs
• + testsuite/tests/rename/should_fail/T25901_sub_d.hs
• + testsuite/tests/rename/should_fail/T25901_sub_d.stderr
• + testsuite/tests/rename/should_fail/T25901_sub_d_helper.hs
• + testsuite/tests/rename/should_fail/T25901_sub_w.hs
• + testsuite/tests/rename/should_fail/T25901_sub_w.stderr
• + testsuite/tests/rename/should_fail/T26545.hs
• + testsuite/tests/rename/should_fail/T26545.stderr
• testsuite/tests/rename/should_fail/all.T
• testsuite/tests/rename/should_fail/rnfail055.stderr
• testsuite/tests/rep-poly/RepPolyCase1.stderr
• − testsuite/tests/rep-poly/RepPolyCase2.stderr
• testsuite/tests/rep-poly/RepPolyRule3.stderr
• testsuite/tests/rep-poly/RepPolyTuple4.stderr
• testsuite/tests/rep-poly/T13233.stderr
• − testsuite/tests/rep-poly/T17021.stderr
• testsuite/tests/rep-poly/T20363b.stderr
• − testsuite/tests/rep-poly/T21650_a.stderr
• − testsuite/tests/rep-poly/T21650_b.stderr
• + testsuite/tests/rep-poly/T26072.hs
• + testsuite/tests/rep-poly/T26072b.hs
• testsuite/tests/rep-poly/UnliftedNewtypesLevityBinder.stderr
• testsuite/tests/rep-poly/all.T
• testsuite/tests/roles/should_fail/RolesIArray.stderr
• testsuite/tests/rts/KeepCafsBase.hs
• testsuite/tests/rts/Makefile
• testsuite/tests/rts/T13676.script
• testsuite/tests/rts/all.T
• testsuite/tests/rts/ipe/all.T
• testsuite/tests/rts/linker/rdynamic.hs
• testsuite/tests/safeHaskell/safeLanguage/SafeLang15.stderr
• testsuite/tests/saks/should_compile/saks023.stdout
• testsuite/tests/saks/should_compile/saks034.stdout
• testsuite/tests/saks/should_compile/saks035.stdout
• testsuite/tests/showIface/DocsInHiFile1.stdout
• testsuite/tests/showIface/HaddockSpanIssueT24378.stdout
• testsuite/tests/showIface/MagicHashInHaddocks.stdout
• testsuite/tests/showIface/Makefile
• + testsuite/tests/showIface/T26246a.hs
• + testsuite/tests/showIface/T26246a.stdout
• testsuite/tests/showIface/all.T
• + testsuite/tests/simd/should_run/T26410_ffi.hs
• + testsuite/tests/simd/should_run/T26410_ffi.stdout
• + testsuite/tests/simd/should_run/T26410_ffi_c.c
• + testsuite/tests/simd/should_run/T26410_prim.hs
• + testsuite/tests/simd/should_run/T26410_prim.stdout
• + testsuite/tests/simd/should_run/T26411.hs
• + testsuite/tests/simd/should_run/T26411.stdout
• + testsuite/tests/simd/should_run/T26411b.hs
• + testsuite/tests/simd/should_run/T26411b.stdout
• + testsuite/tests/simd/should_run/T26542.hs
• + testsuite/tests/simd/should_run/T26542.stdout
• + testsuite/tests/simd/should_run/T26550.hs
• + testsuite/tests/simd/should_run/T26550.stdout
• testsuite/tests/simd/should_run/all.T
• testsuite/tests/simplCore/should_compile/T14003.stderr
• testsuite/tests/simplCore/should_compile/T18013.stderr
• testsuite/tests/simplCore/should_compile/T19672.stderr
• testsuite/tests/simplCore/should_compile/T21391.hs
• testsuite/tests/simplCore/should_compile/T21763.stderr
• testsuite/tests/simplCore/should_compile/T21763a.stderr
• + testsuite/tests/simplCore/should_compile/T26588.hs
• + testsuite/tests/simplCore/should_compile/T26589.hs
• + testsuite/tests/simplCore/should_compile/T26615.hs
• + testsuite/tests/simplCore/should_compile/T26615.stderr
• + testsuite/tests/simplCore/should_compile/T26615a.hs
• + testsuite/tests/simplCore/should_compile/T26681.hs
• + testsuite/tests/simplCore/should_compile/T26682.hs
• + testsuite/tests/simplCore/should_compile/T26682a.hs
• + testsuite/tests/simplCore/should_compile/T26709.hs
• + testsuite/tests/simplCore/should_compile/T26709.stderr
• + testsuite/tests/simplCore/should_compile/T26722.hs
• + testsuite/tests/simplCore/should_compile/T26722.stderr
• + testsuite/tests/simplCore/should_compile/T26805.hs
• + testsuite/tests/simplCore/should_compile/T26805.stderr
• + testsuite/tests/simplCore/should_compile/T26826.hs
• + testsuite/tests/simplCore/should_compile/T26903.hs
• + testsuite/tests/simplCore/should_compile/T26903.stderr
• testsuite/tests/simplCore/should_compile/T4908.stderr
• testsuite/tests/simplCore/should_compile/T8331.stderr
• testsuite/tests/simplCore/should_compile/all.T
• testsuite/tests/simplCore/should_compile/spec-inline.stderr
• testsuite/tests/simplStg/should_compile/all.T
• + testsuite/tests/splice-imports/SI07.stderr-ext-interp
• testsuite/tests/splice-imports/all.T
• testsuite/tests/th/T15321.stderr
• + testsuite/tests/th/T26098A_quote.hs
• + testsuite/tests/th/T26098A_splice.hs
• + testsuite/tests/th/T26098_local.hs
• + testsuite/tests/th/T26098_local.stderr
• + testsuite/tests/th/T26098_quote.hs
• + testsuite/tests/th/T26098_quote.stderr
• + testsuite/tests/th/T26098_splice.hs
• + testsuite/tests/th/T26098_splice.stderr
• + testsuite/tests/th/T26099.hs
• + testsuite/tests/th/T26099.stderr
• + testsuite/tests/th/T26568.hs
• + testsuite/tests/th/T26568.stderr
• testsuite/tests/th/TH_implicitParams.stdout
• testsuite/tests/th/all.T
• testsuite/tests/type-data/should_run/T22332a.stderr
• testsuite/tests/typecheck/T16127/T16127.stderr
• testsuite/tests/typecheck/should_compile/T13050.stderr
• testsuite/tests/typecheck/should_compile/T14273.stderr
• testsuite/tests/typecheck/should_compile/T14590.stderr
• testsuite/tests/typecheck/should_compile/T16188.hs
• testsuite/tests/typecheck/should_compile/T22560d.stdout
• + testsuite/tests/typecheck/should_compile/T24464.hs
• testsuite/tests/typecheck/should_compile/T25180.stderr
• + testsuite/tests/typecheck/should_compile/T26582.hs
• + testsuite/tests/typecheck/should_compile/T26737.hs
• + testsuite/tests/typecheck/should_compile/T26746.hs
• + testsuite/tests/typecheck/should_compile/T26805a.hs
• testsuite/tests/typecheck/should_compile/abstract_refinement_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/all.T
• testsuite/tests/typecheck/should_compile/constraint_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/free_monad_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/hole_constraints.stderr
• testsuite/tests/typecheck/should_compile/holes.stderr
• testsuite/tests/typecheck/should_compile/holes2.stderr
• testsuite/tests/typecheck/should_compile/holes3.stderr
• testsuite/tests/typecheck/should_compile/refinement_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/type_in_type_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr
• testsuite/tests/typecheck/should_compile/valid_hole_fits_interactions.stderr
• testsuite/tests/typecheck/should_fail/ContextStack1.stderr
• testsuite/tests/typecheck/should_fail/FD3.stderr
• testsuite/tests/typecheck/should_fail/FDsFromGivens2.stderr
• testsuite/tests/typecheck/should_fail/FunDepOrigin1b.stderr
• testsuite/tests/typecheck/should_fail/T10285.stderr
• testsuite/tests/typecheck/should_fail/T10534.stderr
• testsuite/tests/typecheck/should_fail/T10715b.stderr
• testsuite/tests/typecheck/should_fail/T11347.stderr
• testsuite/tests/typecheck/should_fail/T13506.stderr
• testsuite/tests/typecheck/should_fail/T14884.stderr
• testsuite/tests/typecheck/should_fail/T15629.stderr
• testsuite/tests/typecheck/should_fail/T15767.stderr
• testsuite/tests/typecheck/should_fail/T15801.stderr
• + testsuite/tests/typecheck/should_fail/T15850.hs
• + testsuite/tests/typecheck/should_fail/T15850.stderr
• + testsuite/tests/typecheck/should_fail/T15850_Lib.hs
• testsuite/tests/typecheck/should_fail/T15883e.stderr
• testsuite/tests/typecheck/should_fail/T19415.stderr
• testsuite/tests/typecheck/should_fail/T19415b.stderr
• + testsuite/tests/typecheck/should_fail/T20289.hs
• + testsuite/tests/typecheck/should_fail/T20289.stderr
• + testsuite/tests/typecheck/should_fail/T20289_A.hs
• testsuite/tests/typecheck/should_fail/T22645.stderr
• testsuite/tests/typecheck/should_fail/T22924a.stderr
• testsuite/tests/typecheck/should_fail/T22924b.stderr
• + testsuite/tests/typecheck/should_fail/T23162b.hs
• + testsuite/tests/typecheck/should_fail/T23162b.stderr
• + testsuite/tests/typecheck/should_fail/T23162c.hs
• + testsuite/tests/typecheck/should_fail/T23162d.hs
• + testsuite/tests/typecheck/should_fail/T23731.hs
• + testsuite/tests/typecheck/should_fail/T23731.stderr
• + testsuite/tests/typecheck/should_fail/T23731b.hs
• + testsuite/tests/typecheck/should_fail/T23731b.stderr
• + testsuite/tests/typecheck/should_fail/T23731b_aux.hs
• testsuite/tests/typecheck/should_fail/T2414.stderr
• testsuite/tests/typecheck/should_fail/T24279.hs
• − testsuite/tests/typecheck/should_fail/T24279.stderr
• testsuite/tests/typecheck/should_fail/T25325.stderr
• testsuite/tests/typecheck/should_fail/T2534.stderr
• + testsuite/tests/typecheck/should_fail/T25679.hs
• + testsuite/tests/typecheck/should_fail/T25679.stderr
• + testsuite/tests/typecheck/should_fail/T25949.hs
• + testsuite/tests/typecheck/should_fail/T25949.stderr
• + testsuite/tests/typecheck/should_fail/T25949_aux.hs
• + testsuite/tests/typecheck/should_fail/T26137.hs
• + testsuite/tests/typecheck/should_fail/T26137.stderr
• testsuite/tests/typecheck/should_fail/T5236.stderr
• testsuite/tests/typecheck/should_fail/T5246.stderr
• testsuite/tests/typecheck/should_fail/T5978.stderr
• testsuite/tests/typecheck/should_fail/T7264.stderr
• testsuite/tests/typecheck/should_fail/T9612.stderr
• testsuite/tests/typecheck/should_fail/TcCoercibleFail.hs
• testsuite/tests/typecheck/should_fail/TcCoercibleFail.stderr
• testsuite/tests/typecheck/should_fail/TcCoercibleFail3.stderr
• testsuite/tests/typecheck/should_fail/all.T
• testsuite/tests/typecheck/should_fail/tcfail143.stderr
• testsuite/tests/typecheck/should_run/T10284.stderr
• testsuite/tests/typecheck/should_run/T13838.stderr
• + testsuite/tests/typecheck/should_run/T16981.hs
• + testsuite/tests/typecheck/should_run/T16981.stdout
• + testsuite/tests/typecheck/should_run/T24773.hs
• + testsuite/tests/typecheck/should_run/T24773.stdout
• testsuite/tests/typecheck/should_run/T9497a-run.stderr
• testsuite/tests/typecheck/should_run/T9497b-run.stderr
• testsuite/tests/typecheck/should_run/T9497c-run.stderr
• testsuite/tests/typecheck/should_run/all.T
• testsuite/tests/unboxedsums/UbxSumUnpackedSize.hs
• testsuite/tests/unsatisfiable/T23816.stderr
• testsuite/tests/unsatisfiable/UnsatDefer.stderr
• testsuite/tests/warnings/should_compile/DodgyExports03.stderr
• testsuite/tests/warnings/should_compile/DodgyImports.stderr
• + testsuite/tests/warnings/should_compile/DodgyImports02.hs
• + testsuite/tests/warnings/should_compile/DodgyImports02.stderr
• + testsuite/tests/warnings/should_compile/DodgyImports03.hs
• + testsuite/tests/warnings/should_compile/DodgyImports03.stderr
• + testsuite/tests/warnings/should_compile/DodgyImports03_helper.hs
• + testsuite/tests/warnings/should_compile/DodgyImports04.hs
• + testsuite/tests/warnings/should_compile/DodgyImports04.stderr
• testsuite/tests/warnings/should_compile/DodgyImports_hiding.stderr
• + testsuite/tests/warnings/should_compile/T25901_exp_dodgy.hs
• + testsuite/tests/warnings/should_compile/T25901_exp_dodgy.stderr
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_1.hs
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_1.stderr
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_2.hs
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_2.stderr
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_3.hs
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_3.stderr
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_4.hs
• + testsuite/tests/warnings/should_compile/T25901_exp_dup_wc_4.stderr
• + testsuite/tests/warnings/should_compile/T25901_helper_1.hs
• + testsuite/tests/warnings/should_compile/T25901_helper_2.hs
• + testsuite/tests/warnings/should_compile/T25901_helper_3.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_1.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_1.stderr
• + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_2.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_dodgy_2.stderr
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_1.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_1.stderr
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_2.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_2.stderr
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_3.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_3.stderr
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_4.hs
• + testsuite/tests/warnings/should_compile/T25901_imp_unused_4.stderr
• testsuite/tests/warnings/should_compile/all.T
• testsuite/tests/warnings/should_fail/CaretDiagnostics1.stderr
• utils/check-exact/ExactPrint.hs
• utils/check-exact/Main.hs
• utils/check-exact/Transform.hs
• utils/check-exact/Utils.hs
• utils/deriveConstants/Main.hs
• utils/genapply/Main.hs
• utils/genprimopcode/Lexer.x
• utils/genprimopcode/Main.hs
• utils/genprimopcode/Parser.y
• utils/genprimopcode/ParserM.hs
• utils/genprimopcode/Syntax.hs
• utils/ghc-pkg/Main.hs
• utils/ghc-toolchain/exe/Main.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cpp.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Utils.hs
• utils/haddock/cabal.project
• utils/haddock/doc/.gitignore
• utils/haddock/doc/Makefile
• + utils/haddock/doc/_static/haddock-custom.css
• utils/haddock/doc/conf.py
• utils/haddock/doc/markup.rst
• + utils/haddock/doc/snippets/.gitignore
• + utils/haddock/doc/snippets/Lists.hs
• + utils/haddock/doc/snippets/Makefile
• + utils/haddock/doc/snippets/Snippet-List-Bulleted.html
• + utils/haddock/doc/snippets/Snippet-List-Bulleted.tex
• + utils/haddock/doc/snippets/Snippet-List-Definition.html
• + utils/haddock/doc/snippets/Snippet-List-Definition.tex
• + utils/haddock/doc/snippets/Snippet-List-Enumerated.html
• + utils/haddock/doc/snippets/Snippet-List-Enumerated.tex
• + utils/haddock/doc/snippets/Snippet-List-Indentation.html
• + utils/haddock/doc/snippets/Snippet-List-Indentation.tex
• + utils/haddock/doc/snippets/Snippet-List-Multiline-Item.html
• + utils/haddock/doc/snippets/Snippet-List-Multiline-Item.tex
• + utils/haddock/doc/snippets/Snippet-List-Nested-Item.html
• + utils/haddock/doc/snippets/Snippet-List-Nested-Item.tex
• + utils/haddock/doc/snippets/Snippet-List-Not-Newline.html
• + utils/haddock/doc/snippets/Snippet-List-Not-Newline.tex
• + utils/haddock/doc/snippets/Snippet-List-Not-Separated.html
• + utils/haddock/doc/snippets/Snippet-List-Not-Separated.tex
• utils/haddock/haddock-api/haddock-api.cabal
• − utils/haddock/haddock-api/src/Haddock/Backends/HaddockDB.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Hoogle.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs
• utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Names.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Themes.hs
• utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
• utils/haddock/haddock-api/src/Haddock/Convert.hs
• utils/haddock/haddock-api/src/Haddock/Doc.hs
• utils/haddock/haddock-api/src/Haddock/GhcUtils.hs
• utils/haddock/haddock-api/src/Haddock/Interface/Create.hs
• utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs
• utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
• utils/haddock/haddock-api/src/Haddock/Types.hs
• utils/haddock/haddock-api/src/Haddock/Utils.hs
• utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
• utils/haddock/haddock-test/src/Test/Haddock.hs
• utils/haddock/html-test/ref/A.html
• utils/haddock/html-test/ref/Bug1004.html
• utils/haddock/html-test/ref/Bug1033.html
• utils/haddock/html-test/ref/Bug1050.html
• utils/haddock/html-test/ref/Bug1103.html
• utils/haddock/html-test/ref/Bug26.html
• + utils/haddock/html-test/ref/Bug26246.html
• utils/haddock/html-test/ref/Bug298.html
• utils/haddock/html-test/ref/Bug458.html
• utils/haddock/html-test/ref/Bug548.html
• utils/haddock/html-test/ref/Bug85.html
• utils/haddock/html-test/ref/Bug923.html
• utils/haddock/html-test/ref/BundledPatterns.html
• utils/haddock/html-test/ref/BundledPatterns2.html
• utils/haddock/html-test/ref/ConstructorPatternExport.html
• utils/haddock/html-test/ref/FunArgs.html
• utils/haddock/html-test/ref/GADTRecords.html
• utils/haddock/html-test/ref/Hash.html
• utils/haddock/html-test/ref/Instances.html
• utils/haddock/html-test/ref/LinearTypes.html
• utils/haddock/html-test/ref/Nesting.html
• utils/haddock/html-test/ref/PatternSyns.html
• + utils/haddock/html-test/ref/PatternSyns2.html
• utils/haddock/html-test/ref/PromotedTypes.html
• utils/haddock/html-test/ref/RedactTypeSynonyms.html
• utils/haddock/html-test/ref/T23616.html
• utils/haddock/html-test/ref/Test.html
• utils/haddock/html-test/ref/TitledPicture.html
• utils/haddock/html-test/ref/TypeFamilies3.html
• utils/haddock/html-test/ref/TypeOperators.html
• utils/haddock/html-test/ref/Unicode.html
• utils/haddock/html-test/ref/Unicode2.html
• + utils/haddock/html-test/src/Bug26246.hs
• + utils/haddock/html-test/src/PatternSyns2.hs
• utils/haddock/hypsrc-test/ref/src/Classes.html
• utils/haddock/hypsrc-test/ref/src/Quasiquoter.html
• utils/haddock/latex-test/ref/LinearTypes/LinearTypes.tex
• utils/hpc
• utils/hsc2hs
• − utils/iserv/cbits/iservmain.c
• − utils/iserv/iserv.cabal.in
• − utils/iserv/src/Main.hs
• utils/jsffi/dyld.mjs
• utils/jsffi/post-link.mjs

The diff was not included because it is too large.