Andreas Klebinger pushed to branch wip/andreask/warn-pattern-namespace at Glasgow Haskell Compiler / GHC

Commits:

• c9ec4d43
  by Simon Hengel at 2025-10-02T18:42:20-04:00

  Update copyright in documentation
  

• da9633a9
  by Matthew Pickering at 2025-10-02T18:43:04-04:00

  loader: Unify loadDecls and loadModuleLinkables functions
  
  These two functions nearly did the same thing. I have refactored them so
  that `loadDecls` now calls `loadModuleLinkables`.
  
  Fixes #26459
  

• 5db98d80
  by Simon Hengel at 2025-10-02T18:43:53-04:00

  Fix typo

• 1275d360
  by Matthew Pickering at 2025-10-03T06:05:56-04:00

  testsuite: Use ghci_ways to set ways in PackedDataCon/UnboxedTuples/UnliftedDataTypeInterp tests
  
  These tests reimplemented the logic from `valid_way` in order to
  determine what ways to run. It's easier to use this combination of
  `only_ways` and `extra_ways` to only run in GHCi ways and always run in
  GHCi ways.
  

• c06b534b
  by Matthew Pickering at 2025-10-03T06:06:40-04:00

  Rename interpreterBackend to bytecodeBackend
  
  This is preparation for creating bytecode files.
  
  The "interpreter" is one way in which we can run bytecode objects. It is
  more accurate to describe that the backend produces bytecode, rather
  than the means by which the code will eventually run.
  
  The "interpreterBackend" binding is left as a deprecated alias.
  

• 41bdb16f
  by Andreas Klebinger at 2025-10-06T18:04:34-04:00

  Add a perf test for #26425
  

• 1da0c700
  by Andreas Klebinger at 2025-10-06T18:05:14-04:00

  Testsuite: Silence warnings about Wx-partial in concprog001
  

• 7471eb6a
  by sheaf at 2025-10-07T21:39:43-04:00

  Improve how we detect user type errors in types
  
  This commit cleans up all the code responsible for detecting whether a
  type contains "TypeError msg" applications nested inside it. All the
  logic is now in 'userTypeError_maybe', which is always deep. Whether
  it looks inside type family applications is determined by the passed-in
  boolean flag:
  
    - When deciding whether a constraint is definitely insoluble, don't
      look inside type family applications, as they may still reduce -- in
      which case the TypeError could disappear.
    - When reporting unsolved constraints, look inside type family
      applications: they had the chance to reduce but didn't, and the
      custom type error might contain valuable information.
  
  All the details are explained in Note [Custom type errors in constraints]
  in GHC.Tc.Types.Constraint.
  
  Another benefit of this change is that it allows us to get rid of the
  deeply dodgy 'getUserTypeErrorMsg' function.
  
  This commit also improves the detection of custom type errors, for
  example in equality constraints:
  
    TypeError blah ~# rhs
  
  It used to be the case that we didn't detect the TypeError on the LHS,
  because we never considered that equality constraints could be insoluble
  due to the presence of custom type errors. Addressing this oversight
  improves detection of redundant pattern match warnings, fixing #26400.
  

• 29955267
  by Rodrigo Mesquita at 2025-10-07T21:40:25-04:00

  cleanup: Drop obsolete settings from config.mk.in
  
  These values used to be spliced into the bindist's `config.mk` s.t. when
  `make` was run, the values were read and written into the bindist installation `settings` file.
  
  However, we now carry these values to the bindist directly in the
  default.target toolchain file, and `make` writes almost nothing to
  `settings` now (see #26227)
  
  The entries deleted in this MR were already unused.
  
  Fixes #26478
  

• f7adfed2
  by ARATA Mizuki at 2025-10-08T08:37:24-04:00

  T22033 is only relevant if the word size is 64-bit
  
  Fixes #25497
  

• ff1650c9
  by Ben Gamari at 2025-10-08T08:38:07-04:00

  rts/posix: Enforce iteration limit on heap reservation logic
  
  Previously we could loop indefinitely when attempting to get an address
  space reservation for our heap. Limit the logic to 8 iterations to
  ensure we instead issue a reasonable error message.
  
  Addresses #26151.
  

• 01844557
  by Ben Gamari at 2025-10-08T08:38:07-04:00

  rts/posix: Hold on to low reservations when reserving heap
  
  Previously when the OS gave us an address space reservation in low
  memory we would immediately release it and try again. However, on some
  platforms this meant that we would get the same allocation again in the
  next iteration (since mmap's `hint` argument is just that, a hint).
  
  Instead we now hold on to low reservations until we have found a
  suitable heap reservation.
  
  Fixes #26151.
  

• b2c8d052
  by Sven Tennie at 2025-10-08T08:38:47-04:00

  Build terminfo only in upper stages in cross-builds (#26288)
  
  Currently, there's no way to provide library paths for [n]curses for
  both - build and target - in cross-builds. As stage0 is only used to
  build upper stages, it should be fine to build terminfo only for them.
  
  This re-enables building cross-compilers with terminfo.
  

• c58f9a61
  by Julian Ospald at 2025-10-08T08:39:36-04:00

  ghc-toolchain: Drop `ld.gold` from merge object command
  
  It's deprecated.
  
  Also see #25716
  

• 2b8baada
  by sheaf at 2025-10-08T18:23:37-04:00

  Improvements to 'mayLookIdentical'
  
  This commit makes significant improvements to the machinery that decides
  when we should pretty-print the "invisible bits" of a type, such as:
  
    - kind applications, e.g. '@k' in 'Proxy @k ty'
    - RuntimeReps, e.g. 'TYPE r'
    - multiplicities and linear arrows 'a %1 -> b'
  
  To do this, this commit refactors 'mayLookIdentical' to return **which**
  of the invisible bits don't match up, e.g. in
  
    (a %1 -> b) ~ (a %Many -> b)
  
  we find that the invisible bit that doesn't match up is a multiplicity,
  so we should set 'sdocLinearTypes = True' when pretty-printing, and with
  e.g.
  
    Proxy @k1 ~ Proxy @k2
  
  we find that the invisible bit that doesn't match up is an invisible
  TyCon argument, so we set 'sdocPrintExplicitKinds = True'.
  
  We leverage these changes to remove the ad-hoc treatment of linearity
  of data constructors with 'dataConDisplayType' and 'dataConNonLinearType'.
  This is now handled by the machinery of 'pprWithInvisibleBits'.
  
  Fixes #26335 #26340
  

• 129ce32d
  by sheaf at 2025-10-08T18:23:37-04:00

  Store SDoc context in SourceError
  
  This commits modifies the SourceError datatype which is used for
  throwing and then reporting exceptions by storing all the info we need
  to be able to print the SDoc, including whether we should print with
  explicit kinds, explicit runtime-reps, etc.
  
  This is done using the new datatype:
  
    data SourceErrorContext
      = SEC
          !DiagOpts
          !(DiagnosticOpts GhcMessage)
  
  Now, when we come to report an error (by handling the exception), we
  have access to the full context we need.
  
  Fixes #26387
  

• f9790ca8
  by Ben Gamari at 2025-10-08T18:24:19-04:00

  gitlab-ci: Make RELEASE_JOB an input
  
  Rather than an undocumented variable.
  

• 14281a22
  by Ben Gamari at 2025-10-11T14:06:47-04:00

  rts/nonmoving: Fix comment spelling
  

• bedd38b0
  by Ben Gamari at 2025-10-11T14:06:47-04:00

  rts/nonmoving: Use atomic operations to update bd->flags
  

• 215d6841
  by Ben Gamari at 2025-10-11T14:06:47-04:00

  nonmoving: Use get_itbl instead of explicit loads
  
  This is cleaner and also fixes unnecessary (and unsound) use of
  `volatile`.
  

• 2c94aa3a
  by Ben Gamari at 2025-10-11T14:06:47-04:00

  rts/Scav: Handle WHITEHOLEs in scavenge_one
  
  `scavenge_one`, used to scavenge mutable list entries, may encounter
  `WHITEHOLE`s when the non-moving GC is in use via two paths:
  
    1. when an MVAR is being marked concurrently
    2. when the object belongs to a chain of selectors being short-cutted.
  
  Fixes #26204.
  

• 6bd8155c
  by Matthew Pickering at 2025-10-11T14:07:29-04:00

  Add support for generating bytecode objects
  
  This commit adds the `-fwrite-byte-code` option which makes GHC emit a
  `.gbc` file which contains a serialised representation of bytecode.
  
  The bytecode can be loaded by the compiler to avoid having to
  reinterpret a module when using the bytecode interpreter (for example,
  in GHCi).
  
  There are also the new options:
  
  * -gbcdir=<DIR>: Specify the directory to place the gbc files
  * -gbcsuf=<suffix>: Specify the suffix for gbc files
  
  The option `-fbyte-code-and-object-code` now implies
  `-fwrite-byte-code`.
  
  These performance tests fail due to https://github.com/haskell/directory/issues/204
  
  -------------------------
  Metric Increase:
      MultiComponentModules
      MultiLayerModules
      MultiComponentModulesRecomp
      MultiLayerModulesRecomp
      MultiLayerModulesTH_Make
      MultiLayerModulesTH_OneShot
      T13701
  -------------------------
  
  The bytecode serialisation part was implemented by Cheng Shao
  
  Co-authored-by: Cheng Shao <terrorjack@type.dance>
  

• dc8f9599
  by Matthew Pickering at 2025-10-11T14:07:30-04:00

  Revert "Add a perf test for #26425"
  
  This test has a large memory spike currently, which makes the test
  sensitive, since if you allocate a little more or less, the precise
  location where GC happens shifts and you observe a different part of the
  spike.
  
  Andreas told me to revert the patch for now, and he will add it back
  when he fixes the memory spike.
  
  This reverts commit 41bdb16fd083110a06507248f648c507a2feb4af.
  

• e10dcd65
  by Sven Tennie at 2025-10-12T10:24:56+00:00

  T22859: Increase threadDelay for small machines
  
  The previously used thread delay led to failures on my RISC-V test
  setups.
  

• d59ef6b6
  by Hai / @BestYeen at 2025-10-14T21:51:14-04:00

  Change Alex and Happy m4 scripts to display which version was found in the system, adapt small formatting details in Happy script to be more like the Alex script again.

• c98abb6a
  by Hai / @BestYeen at 2025-10-14T21:52:08-04:00

  Update occurrences of return to pure and add a sample for redefining :m to mean :main

• 70ee825a
  by Cheng Shao at 2025-10-14T21:52:50-04:00

  testsuite: fix T3586 for non-SSE3 platforms
  
  `T3586.hs` contains `-fvia-C -optc-msse3` which I think is a
  best-effort basis to harvest the C compiler's auto vectorization
  optimizations via the C backend back when the test was added. The
  `-fvia-C` part is now a deprecated no-op because GHC can't fall back
  to the C backend on a non-unregisterised build, and `-optc-msse3`
  might actually cause the test to fail on non x86/x64 platforms, e.g.
  recent builds of wasi-sdk would report `wasm32-wasi-clang: error:
  unsupported option '-msse3' for target 'wasm32-unknown-wasi'`.
  
  So this patch cleans up this historical cruft. `-fvia-C` is removed,
  and `-optc-msse3` is only passed when cpuid contains `pni` (which
  indicates support of SSE3).
  

• 4be32153
  by Teo Camarasu at 2025-10-15T08:06:09-04:00

  Add submodules for template-haskell-lift and template-haskell-quasiquoter
  
  These two new boot libraries expose stable subsets of the
  template-haskell interface.
  
  This is an implemenation of the GHC proposal https://github.com/ghc-proposals/ghc-proposals/pull/696
  
  Work towards #25262
  

• 0c00c9c3
  by Ben Gamari at 2025-10-15T08:06:51-04:00

  rts: Eliminate uses of implicit constant arrays
  
  Folding of `const`-sized variable-length arrays to a constant-length
  array is a gnu extension which clang complains about.
  
  Closes #26502.
  

• bf902a1d
  by Fendor at 2025-10-15T16:00:59-04:00

  Refactor distinct constructor tables map construction
  
  Adds `GHC.Types.Unique.FM.alterUFM_L`, `GHC.Types.Unique.DFM.alterUDFM_L`
  `GHC.Data.Word64Map.alterLookup` to support fusion of distinct
  constructor data insertion and lookup during the construction of the `DataCon`
  map in `GHC.Stg.Debug.numberDataCon`.
  
  Co-authored-by: Fendor <fendor@posteo.de>
  Co-authored-by: Finley McIlwaine <finleymcilwaine@gmail.com>
  

• b3585ba1
  by Fendor at 2025-10-15T16:00:59-04:00

  Allow per constructor refinement of distinct-constructor-tables
  
  Introduce `-fno-distinct-constructor-tables`. A distinct constructor table
  configuration is built from the combination of flags given, in order. For
  example, to only generate distinct constructor tables for a few specific
  constructors and no others, just pass
  `-fdistinct-constructor-tables-only=C1,...,CN`.
  This flag can be supplied multiple times to extend the set of
  constructors to generate a distinct info table for.
  
  You can disable generation of distinct constructor tables for all
  configurations by passing `-fno-distinct-constructor-tables`.
  
  The various configurations of these flags is included in the `DynFlags`
  fingerprints, which should result in the expected recompilation logic.
  
  Adds a test that checks for distinct tables for various given or omitted
  constructors.
  
  Updates CountDepsAst and CountDepsParser tests to account for new dependencies.
  
  Fixes #23703
  
  Co-authored-by: Fendor <fendor@posteo.de>
  Co-authored-by: Finley McIlwaine <finleymcilwaine@gmail.com>
  

• e17dc695
  by fendor at 2025-10-15T16:01:41-04:00

  Fix typos in haddock documentation for stack annotation API
  

• f85058d3
  by Zubin Duggal at 2025-10-17T13:50:52+05:30

  compiler: Attempt to systematize Unique tags by introducing an ADT for each different tag
  
  Fixes #26264
  
  Metric Decrease:
      T9233
  

• c85c845d
  by sheaf at 2025-10-17T22:35:32-04:00

  Don't prematurely final-zonk PatSyn declarations
  
  This commit makes GHC hold off on the final zonk for pattern synonym
  declarations, in 'GHC.Tc.TyCl.PatSyn.tc_patsyn_finish'.
  This accommodates the fact that pattern synonym declarations without a
  type signature can contain unfilled metavariables, e.g. if the RHS of
  the pattern synonym involves view-patterns whose type mentions promoted
  (level 0) metavariables. Just like we do for ordinary function bindings,
  we should allow these metavariables to be settled later, instead of
  eagerly performing a final zonk-to-type.
  
  Now, the final zonking-to-type for pattern synonyms is performed in
  GHC.Tc.Module.zonkTcGblEnv.
  
  Fixes #26465
  

• ba3e5bdd
  by Rodrigo Mesquita at 2025-10-18T16:57:18-04:00

  Move code-gen aux symbols from ghc-internal to rts
  
  These symbols were all previously defined in ghc-internal and made the
  dependency structure awkward, where the rts may refer to some of these
  symbols and had to work around that circular dependency the way
  described in #26166.
  
  Moreover, the code generator will produce code that uses these symbols!
  Therefore, they should be available in the rts:
  
  PRINCIPLE: If the code generator may produce code which uses this
  symbol, then it should be defined in the rts rather than, say,
  ghc-internal.
  
  That said, the main motivation is towards fixing #26166.
  
  Towards #26166. Pre-requisite of !14892
  

• f31de2a9
  by Ben Gamari at 2025-10-18T16:57:18-04:00

  rts: Avoid static symbol references to ghc-internal
  
  This resolves #26166, a bug due to new constraints placed by Apple's
  linker on undefined references.
  
  One source of such references in the RTS is the many symbols referenced
  in ghc-internal. To mitigate #26166, we make these references dynamic,
  as described in Note [RTS/ghc-internal interface].
  
  Fixes #26166
  
  Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita@gmail.com>
  Co-authored-by: Cheng Shao <terrorjack@type.dance>
  

• 43fdfddc
  by Ben Gamari at 2025-10-18T16:57:18-04:00

  compiler: Rename isMathFun -> isLibcFun
  
  This set includes more than just math functions.
  

• 4ed5138f
  by Ben Gamari at 2025-10-18T16:57:18-04:00

  compiler: Add libc allocator functions to libc_funs
  
  Prototypes for these are now visible from `Prim.h`, resulting in
  multiple-declaration warnings in the unregisterised job.
  

• 9a0a076b
  by Ben Gamari at 2025-10-18T16:57:18-04:00

  rts: Minimize header dependencies of Prim.h
  
  Otherwise we will end up with redundant and incompatible declarations
  resulting in warnings during the unregisterised build.
  

• 26b8a414
  by Diego Antonio Rosario Palomino at 2025-10-18T16:58:10-04:00

  Cmm Parser: Fix incorrect example in comment
  
  The Parser.y file contains a comment with an incorrect example of textual
  Cmm (used in .cmm files). This commit updates the comment to ensure it
  reflects valid textual Cmm syntax.
  
  Fixes #26313
  

• d4a9d6d6
  by ARATA Mizuki at 2025-10-19T18:43:47+09:00

  Handle implications between x86 feature flags
  
  This includes:
  
  * Multiple -msse* options can be specified
  * -mavx implies -msse4.2
  * -mavx2 implies -mavx
  * -mfma implies -mavx
  * -mavx512f implies -mavx2 and -mfma
  * -mavx512{cd,er,pf} imply -mavx512f
  
  Closes #24989
  
  Co-authored-by: sheaf <sam.derbyshire@gmail.com>
  

• c9b8465c
  by Cheng Shao at 2025-10-20T10:16:00-04:00

  wasm: workaround WebKit bug in dyld
  
  This patch works around a WebKit bug and allows dyld to run on WebKit
  based platforms as well. See added note for detailed explanation.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 91b6be10
  by Julian Ospald at 2025-10-20T18:21:03-04:00

  Improve error handling in 'getPackageArchives'
  
  When the library dirs in the package conf files are not set up correctly,
  the JS linker will happily ignore such packages and not link against them,
  although they're part of the link plan.
  
  Fixes #26383
  

• 6c5269da
  by Sven Tennie at 2025-10-20T18:21:44-04:00

  Align coding style
  
  Improve readability by using the same style for all constructor calls in
  this function.
  

• 3d305889
  by Sven Tennie at 2025-10-20T18:21:44-04:00

  Reduce complexity by removing joins with mempty
  
  ldArgs, cArgs and cppArgs are all `mempty`. Thus concatenating them adds
  nothing but some complexity while reading the code.
  

• 38d65187
  by Matthew Pickering at 2025-10-21T13:12:20+01:00

  Fix stack decoding when using profiled runtime
  
  There are three fixes in this commit.
  
  * We need to replicate the `InfoTable` and `InfoTableProf`
  approach for the other stack constants (see the new Stack.ConstantsProf
  file).
  
  * Then we need to appropiately import the profiled or non-profiled
    versions.
  
  * Finally, there was an incorrect addition in `stackFrameSize`. We need
    to cast after performing addition on words.
  
  Fixes #26507
  

• 17231bfb
  by fendor at 2025-10-21T13:12:20+01:00

  Add regression test for #26507
  

• 4f5bf93b
  by Simon Peyton Jones at 2025-10-25T04:05:34-04:00

  Postscript to fix for #26255
  
  This MR has comments only
  

• 6ef22fa0
  by IC Rainbow at 2025-10-26T18:23:01-04:00

  Add SIMD primops for bitwise logical operations
  
  This adds 128-bit wide and/or/xor instructions for X86 NCG,
  with both SSE and AVX encodings.
  
  ```
  andFloatX4# :: FloatX4# -> FloatX4# -> FloatX4#     -- andps / vandps
  andDoubleX2# :: DoubleX2# -> DoubleX2# -> DoubleX2# -- andpd / vandpd
  andInt8X16# :: Int8X16# -> Int8X16# -> Int8X16#     -- pand / vpand
  ```
  
  The new primops are available on ARM when using LLVM backend.
  
  Tests added:
  - simd015 (floats and doubles)
  - simd016 (integers)
  - simd017 (words)
  
  Fixes #26417
  

• fbdc623a
  by sheaf at 2025-10-26T18:23:52-04:00

  Add hints for unsolved HasField constraints
  
  This commit adds hints and explanations for unsolved 'HasField'
  constraints.
  
  GHC will now provide additional explanations for an unsolved constraint
  of the form 'HasField fld_name rec_ty fld_ty'; the details are laid out in
  Note [Error messages for unsolved HasField constraints], but briefly:
  
    1. Provide similar name suggestions (e.g. mis-spelled field name)
       and import suggestions (record field not in scope).
       These result in actionable 'GhcHints', which is helpful to provide
       code actions in HLS.
  
    2. Explain why GHC did not solve the constraint, e.g.:
  
      - 'fld_name' is not a string literal (e.g. a type variable)
      - 'rec_ty' is a TyCon without any fields, e.g. 'Int' or 'Bool'.
      - 'fld_ty' contains existentials variables or foralls.
      - The record field is a pattern synonym field (GHC does not generate
        HasField instances for those).
      - 'HasField' is a custom 'TyCon', not actually the built-in
        'HasField' typeclass from 'GHC.Records'.
  
  On the way, we slightly refactor the mechanisms for import suggestions
  in GHC.Rename.Unbound. This is to account for the fact that, for
  'HasField', we don't care whether the field is imported qualified or
  unqualified. 'importSuggestions' was refactored, we now have
  'sameQualImportSuggestions' and 'anyQualImportSuggestions'.
  
  Fixes #18776 #22382 #26480
  

• 99d5707f
  by sheaf at 2025-10-26T18:23:52-04:00

  Rename PatSyn MatchContext to PatSynCtx to avoid punning
  

• 5dc2e9ea
  by Julian Ospald at 2025-10-27T18:17:23-04:00

  Skip uniques test if sources are not available
  

• 544b9ec9
  by Vladislav Zavialov at 2025-10-27T18:18:06-04:00

  Re-export GHC.Hs.Basic from GHC.Hs
  
  Clean up some import sections in GHC by re-exporting GHC.Hs.Basic
  from GHC.Hs.
  

• 643ce801
  by Julian Ospald at 2025-10-28T18:18:55-04:00

  rts: remove unneccesary cabal flags
  
  We perform those checks via proper autoconf macros
  instead that do the right thing and then add those
  libs to the rts buildinfo.
  

• d69ea8fe
  by Vladislav Zavialov at 2025-10-28T18:19:37-04:00

  Test case for #17705
  
  Starting with GHC 9.12 (the first release to include 5745dbd3),
  all examples in this ticket are handled as expected.
  

• 4038a28b
  by Andreas Klebinger at 2025-10-30T12:38:52-04:00

  Add a perf test for #26425
  

• f997618e
  by Andreas Klebinger at 2025-10-30T12:38:52-04:00

  OccAnal: Be stricter for better compiler perf.
  
  In particular we are now stricter:
  
  * When combining usageDetails.
  * When computing binder info.
  
  In combineUsageDetails when combining the underlying adds we compute a
  new `LocalOcc` for each entry by combining the two existing ones.
  
  Rather than wait for those entries to be forced down the road we now
  force them immediately. Speeding up T26425 by about 10% with little
  effect on the common case.
  
  We also force binders we put into the Core AST everywhere now.
  Failure to do so risks leaking the occ env used to set the binders
  OccInfo.
  
  For T26425 compiler residency went down by a factor of ~10x.
  
  Compile time also improved by a factor of ~1.6.
  
  -------------------------
  Metric Decrease:
      T18698a
      T26425
      T9233
  -------------------------
  

• 5618645b
  by Vladislav Zavialov at 2025-10-30T12:39:33-04:00

  Fix namespace specifiers in subordinate exports (#12488)
  
  This patch fixes an oversight in the `lookupChildrenExport` function that
  caused explicit namespace specifiers of subordinate export items to be
  ignored:
  
    module M (T (type A)) where   -- should be rejected
    data T = A
  
  Based on the `IEWrappedName` data type, there are 5 cases to consider:
  1. Unadorned name:   P(X)
  2. Named default:    P(default X)
  3. Pattern synonym:  P(pattern X)
  4. Type name:        P(type X)
  5. Data name:        P(data X)
  
  Case 1 is already handled correctly; cases 2 and 3 are parse errors; and
  it is cases 4 and 5 that we are concerned with in this patch.
  
  Following the precedent established in `LookupExactName`, we introduce
  a boolean flag in `LookupChildren` to control whether to look up in all
  namespaces or in a specific one. If an export item is accompanied by an
  explicit namespace specifier `type` or `data`, we restrict the lookup in
  `lookupGRE` to a specific namespace.
  
  The newly introduced diagnostic `TcRnExportedSubordinateNotFound`
  provides error messages and suggestions more tailored to this context
  than the previously used `reportUnboundName`.
  

• f75ab223
  by Peter Trommler at 2025-10-31T18:43:13-04:00

  ghc-toolchain: detect PowerPC 64 bit ABI
  
  Check preprocessor macro defined for ABI v2 and assume v1 otherwise.
  Fixes #26521
  

• d086c474
  by Peter Trommler at 2025-10-31T18:43:13-04:00

  ghc-toolchain: refactor, move lastLine to Utils
  

• 995dfe0d
  by Vladislav Zavialov at 2025-10-31T18:43:54-04:00

  Tests for -Wduplicate-exports, -Wdodgy-exports
  
  Add test cases for the previously untested diagnostics:
  
    [GHC-51876] TcRnDupeModuleExport
    [GHC-64649] TcRnNullExportedModule
  
  This also revealed a typo (incorrect capitalization of "module") in the
  warning text for TcRnDupeModuleExport, which is now fixed.
  

• f6961b02
  by Cheng Shao at 2025-11-01T00:08:01+01:00

  wasm: reformat dyld source code
  
  This commit reformats dyld source code with prettier, to avoid
  introducing unnecessary diffs in subsequent patches when they're
  formatted before committing.
  

• 0c9032a0
  by Cheng Shao at 2025-11-01T00:08:01+01:00

  wasm: simplify _initialize logic in dyld
  
  This commit simplifies how we _initialize a wasm shared library in
  dyld and removes special treatment for libc.so, see added comment for
  detailed explanation.
  

• ec1b40bd
  by Cheng Shao at 2025-11-01T00:08:01+01:00

  wasm: support running dyld fully client side in the browser
  
  This commit refactors the wasm dyld script so that it can be used to
  load and run wasm shared libraries fully client-side in the browser
  without needing a wasm32-wasi-ghci backend:
  
  - A new `DyLDBrowserHost` class is exported, which runs in the browser
    and uses the in-memory vfs without any RPC calls. This meant to be
    used to create a `rpc` object for the fully client side use cases.
  - The exported `main` function now can be used to load user-specified
    shared libraries, and the user can use the returned `DyLD` instance
    to run their own exported Haskell functions.
  - The in-browser wasi implementation is switched to
    https://github.com/haskell-wasm/browser_wasi_shim for bugfixes and
    major performance improvements not landed upstream yet.
  - When being run by deno, it now correctly switches to non-nodejs code
    paths, so it's more convenient to test dyld logic with deno.
  
  See added comments for details, as well as the added `playground001`
  test case for an example of using it to build an in-browser Haskell
  playground.
  

• 8f3e481f
  by Cheng Shao at 2025-11-01T00:08:01+01:00

  testsuite: add playground001 to test haskell playground
  
  This commit adds the playground001 test case to test the haskell
  playground in browser, see comments for details.
  

• af40606a
  by Cheng Shao at 2025-11-01T00:08:04+01:00

  Revert "testsuite: add T26431 test case"
  
  This reverts commit 695036686f8c6d78611edf3ed627608d94def6b7. T26431
  is now retired, wasm ghc internal-interpreter logic is tested by
  playground001.
  

• 86c82745
  by Vladislav Zavialov at 2025-11-01T07:24:29-04:00

  Supplant TcRnExportHiddenComponents with TcRnDodgyExports (#26534)
  
  Remove a bogus special case in lookup_ie_kids_all,
  making TcRnExportHiddenComponents obsolete.
  

• fcf6331e
  by Richard Eisenberg at 2025-11-03T08:33:05+00:00

  Refactor fundep solving
  
  This commit is a large-scale refactor of the increasingly-messy code that
  handles functional dependencies.  It has virtually no effect on what compiles
  but improves error messages a bit.  And it does the groundwork for #23162.
  
  The big picture is described in
      Note [Overview of functional dependencies in type inference]
  in GHC.Tc.Solver.FunDeps
  
  * New module GHC.Tc.Solver.FunDeps contains all the fundep-handling
    code for the constraint solver.
  
  * Fundep-equalities are solved in a nested scope; they may generate
    unifications but otherwise have no other effect.
    See GHC.Tc.Solver.FunDeps.solveFunDeps
  
    The nested needs to start from the Givens in the inert set, but
    not the Wanteds; hence a new function `resetInertCans`, used in
    `nestFunDepsTcS`.
  
  * That in turn means that fundep equalities never show up in error
    messages, so the complicated FunDepOrigin tracking can all disappear.
  
  * We need to be careful about tracking unifications, so we kick out
    constraints from the inert set after doing unifications.  Unification
    tracking has been majorly reformed: see Note [WhatUnifications] in
    GHC.Tc.Utils.Unify.
  
    A good consequence is that the hard-to-grok `resetUnificationFlag`
    has been replaced with a simpler use of
    `reportCoarseGrainUnifications`
  
  Smaller things:
  
  * Rename `FunDepEqn` to `FunDepEqns` since it contains multiple
    type equalities.
  
  Some compile time improvement
  
  Metrics: compile_time/bytes allocated
                            Baseline
                    Test       value      New value Change
  ---------------------- --------------------------------------
           T5030(normal) 173,839,232    148,115,248 -14.8% GOOD
  hard_hole_fits(normal) 286,768,048    284,015,416  -1.0%
  
               geo. mean                             -0.2%
               minimum                              -14.8%
               maximum                               +0.3%
  
  Metric Decrease:
      T5030
  

• 231adc30
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  QuickLook's tcInstFun should make instantiation variables directly
  
  tcInstFun must make "instantiation variables", not regular
  unification variables, when instantiating function types. That was
  previously implemented by a hack: set the /ambient/ level to QLInstTyVar.
  
  But the hack finally bit me, when I was refactoring WhatUnifications.
  And it was always wrong: see the now-expunged (TCAPP2) note.
  
  This commit does it right, by making tcInstFun call its own
  instantiation functions.  That entails a small bit of duplication,
  but the result is much, much cleaner.
  

• 39d4a24b
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Build implication for constraints from (static e)
  
  This commit addresses #26466, by buiding an implication for the
  constraints arising from a (static e) form.  The implication has
  a special ic_info field of StaticFormSkol, which tells the constraint
  solver to use an empty set of Givens.
  
  See (SF3) in Note [Grand plan for static forms]
  in GHC.Iface.Tidy.StaticPtrTable
  
  This commit also reinstates an `assert` in GHC.Tc.Solver.Equality.
  
  The test `StaticPtrTypeFamily` was failing with an assertion failure,
  but it now works.
  

• 2e2aec1e
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Comments about defaulting representation equalities
  

• 52a4d1da
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Improve tracking of rewriter-sets
  
  This refactor substantially improves the treatment of so-called
  "rewriter-sets" in the constraint solver.
  
  The story is described in the rewritten
     Note [Wanteds rewrite Wanteds: rewriter-sets]
  in GHC.Tc.Types.Constraint
  
  Some highlights
  
  * Trace the free coercion holes of a filled CoercionHole,
    in CoercionPlusHoles.  See Note [Coercion holes] (COH5)
  
    This avoids taking having to take the free coercion variables
    of a coercion when zonking a rewrriter-set
  
  * Many knock on changes
      * Make fillCoercionHole take CoercionPlusHoles as its argument
        rather than to separate arguments.
  
      * Similarly setEqIfWanted, setWantedE, wrapUnifierAndEmit.
  
      * Be more careful about passing the correct CoHoleSet to
        `rewriteEqEvidence` and friends
  
  * Make kickOurAfterFillingCoercionHole more clever. See
    new Note [Kick out after filling a coercion hole]
  
  Smaller matters
  
  * Rename RewriterSet to CoHoleSet
  * Add special-case helper `rewriteEqEvidenceSwapOnly`
  

• 3e78e1ba
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Tidy up constraint solving for foralls
  
  * In `can_eq_nc_forall` make sure to track Givens that are used
    in the nested solve step.
  
  * Tiny missing-swap bug-fix in `lookup_eq_in_qcis`
  
  * Fix some leftover mess from
        commit 14123ee646f2b9738a917b7cec30f9d3941c13de
        Author: Simon Peyton Jones <simon.peytonjones@gmail.com>
        Date:   Wed Aug 20 00:35:48 2025 +0100
        Solve forall-constraints via an implication, again
    Specifically, trySolveImplication is now dead.
  

• 973f2c25
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Do not treat CoercionHoles as free variables in coercions
  
  This fixes a long-standing wart in the free-variable finder;
  now CoercionHoles are no longer treated as a "free variable"
  of a coercion.
  
  I got big and unexpected performance regressions when making
  this change.  Turned out that CallArity didn't discover that
  the free variable finder could be eta-expanded, which gave very
  poor code.
  
  So I re-used Note [The one-shot state monad trick] for Endo,
  resulting in GHC.Utils.EndoOS.  Very simple, big win.
  

• c2b8a0f9
  by Simon Peyton Jones at 2025-11-03T08:33:05+00:00

  Update debug-tracing in CallArity
  
  No effect on behaviour, and commented out anyway
  

• 9aa5ee99
  by Simon Peyton Jones at 2025-11-03T08:33:28+00:00

  Comments only -- remove dangling Note references
  

• 6683f183
  by Simon Peyton Jones at 2025-11-03T08:33:28+00:00

  Accept error message wibbles
  

• 3ba3d9f9
  by Luite Stegeman at 2025-11-04T00:59:41-05:00

  rts: fix eager black holes: record mutated closure and fix assertion
  
  This fixes two problems with handling eager black holes, introduced
  by a1de535f762bc23d4cf23a5b1853591dda12cdc9.
  
  - the closure mutation must be recorded even for eager black holes,
    since the mutator has mutated it before calling threadPaused
  
  - The assertion that an unmarked eager black hole must be owned by
    the TSO calling threadPaused is incorrect, since multiple threads
    can race to claim the black hole.
  
  fixes #26495
  

• b5508f2c
  by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00

  build: Relax ghc/ghc-boot Cabal bound to 3.16
  
  Fixes #26202
  

• c5b3541f
  by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00

  cabal-reinstall: Use haddock-api +in-tree-ghc
  
  Fixes #26202
  

• c6d4b945
  by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00

  cabal-reinstall: Pass --strict to Happy
  
  This is necessary to make the generated Parser build successfully
  This mimics Hadrian, which always passes --strict to happy.
  
  Fixes #26202
  

• 79df1e0e
  by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00

  genprimopcode: Require higher happy version
  
  I've bumped the happy version to forbid deprecated Happy versions which
  don't successfully compile.
  

• fa5d33de
  by Simon Peyton Jones at 2025-11-05T08:35:40-05:00

  Add a HsWrapper optimiser
  
  This MR addresses #26349, by introduceing optSubTypeHsWrapper.
  There is a long
  
     Note [Deep subsumption and WpSubType]
  
  in GHC.Tc.Types.Evidence that explains what is going on.
  

• ea58cae5
  by Simon Peyton Jones at 2025-11-05T08:35:40-05:00

  Improve mkWpFun_FRR
  
  This commit ensures that `mkWpFun_FRR` directly produces a `FunCo` in
  the cases where it can.
  
  (Previously called `mkWpFun` which in turn optimised to a `FunCo`, but
  that made the smarts in `mkWpFun` /essential/ rather than (as they
  should be) optional.
  

• 5cdcfaed
  by Ben Gamari at 2025-11-06T09:01:36-05:00

  compiler: Exclude units with no exposed modules from unused package check
  
  Such packages cannot be "used" in the Haskell sense of the word yet
  are nevertheless necessary as they may provide, e.g., C object code or
  link flags.
  
  Fixes #24120.
  

• 74b8397a
  by Brandon Chinn at 2025-11-06T09:02:19-05:00

  Replace deprecated argparse.FileType
  

• 36ddf988
  by Ben Gamari at 2025-11-06T09:03:01-05:00

  Bump unix submodule to 2.8.8.0
  
  Closes #26474.
  

• c32b3a29
  by fendor at 2025-11-06T09:03:43-05:00

  Fix assertion in `postStringLen` to account for \0 byte
  
  We fix the assertion to handle trailing \0 bytes in `postStringLen`.
  Before this change, the assertion looked like this:
  
      ASSERT(eb->begin + eb->size > eb->pos + len + 1);
  
  Let's assume some values to see why this is actually off by one:
  
      eb->begin = 0
      eb->size  = 1
      eb->pos   = 0
  
      len       = 1
  
  then the assertion would trigger correctly:
  
      0 + 1 > 0 + 1 + 1 => 1 > 2 => false
  
  as there is not enough space for the \0 byte (which is the trailing +1).
  However, if we change `eb->size = 2`, then we do have enough space for a
  string of length 1, but the assertion still fails:
  
      0 + 2 > 0 + 1 + 1 => 2 > 2 => false
  
  Which causes the assertion to fail if there is exactly enough space for
  the string with a trailing \0 byte.
  
  Clearly, the assertion should be `>=`!
  If we switch around the operand, it should become more obvious that `<=`
  is the correct comparison:
  
      ASSERT(eb->pos + len + 1 <= eb->begin + eb->size);
  
  This is expresses more naturally that the current position plus the
  length of the string (and the null byte) must be smaller or equal to the
  overall size of the buffer.
  
  This change also is in line with the implementation in
  `hasRoomForEvent` and `hasRoomForVariableEvent`:
  
    ```
    StgBool hasRoomForEvent(EventsBuf *eb, EventTypeNum eNum)
    {
      uint32_t size = ...;
      if (eb->pos + size > eb->begin + eb->size)
      ...
    ```
  
  the check `eb->pos + size > eb->begin + eb->size` is identical to
  `eb->pos + size <= eb->begin + eb->size` plus a negation.
  

• 3034a6f2
  by Ben Gamari at 2025-11-06T09:04:24-05:00

  Bump os-string submodule to 2.0.8
  

• 39567e85
  by Cheng Shao at 2025-11-06T09:05:06-05:00

  rts: use computed goto for instruction dispatch in the bytecode interpreter
  
  This patch uses computed goto for instruction dispatch in the bytecode
  interpreter. Previously instruction dispatch is done by a classic
  switch loop, so executing the next instruction requires two jumps: one
  to the start of the switch loop and another to the case block based on
  the instruction tag. By using computed goto, we can build a jump table
  consisted of code addresses indexed by the instruction tags
  themselves, so executing the next instruction requires only one jump,
  to the destination directly fetched from the jump table.
  
  Closes #12953.
  

• 93fc7265
  by sheaf at 2025-11-06T21:33:24-05:00

  Correct hasFixedRuntimeRep in matchExpectedFunTys
  
  This commit fixes a bug in the representation-polymormorphism check in
  GHC.Tc.Utils.Unify.matchExpectedFunTys. The problem was that we put
  the coercion resulting from hasFixedRuntimeRep in the wrong place,
  leading to the Core Lint error reported in #26528.
  
  The change is that we have to be careful when using 'mkWpFun': it
  expects **both** the expected and actual argument types to have a
  syntactically fixed RuntimeRep, as explained in Note [WpFun-FRR-INVARIANT]
  in GHC.Tc.Types.Evidence.
  
  On the way, this patch improves some of the commentary relating to
  other usages of 'mkWpFun' in the compiler, in particular in the view
  pattern case of 'tc_pat'. No functional changes, but some stylistic
  changes to make the code more readable, and make it easier to understand
  how we are upholding the WpFun-FRR-INVARIANT.
  
  Fixes #26528
  

• c052c724
  by Simon Peyton Jones at 2025-11-06T21:34:06-05:00

  Fix a horrible shadowing bug in implicit parameters
  
  Fixes #26451.  The change is in GHC.Tc.Solver.Monad.updInertDicts
  where we now do /not/ delete /Wanted/ implicit-parameeter constraints.
  
  This bug has been in GHC since 9.8!  But it's quite hard to provoke;
  I contructed a tests in T26451, but it was hard to do so.
  

• b253013e
  by Georgios Karachalias at 2025-11-07T17:21:57-05:00

  Remove the `CoreBindings` constructor from `LinkablePart`
  
  Adjust HscRecompStatus to disallow unhydrated WholeCoreBindings
  from being passed as input to getLinkDeps (which would previously
  panic in this case).
  
  Fixes #26497
  

• ac7b737e
  by Sylvain Henry at 2025-11-07T17:22:51-05:00

  Testsuite: pass ext-interp test way (#26552)
  
  Note that some tests are still marked as broken with the ext-interp way
  (see #26552 and #14335)
  

• 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
  

• ab29c3e7
  by Andreas Klebinger at 2026-01-19T10:51:11+01:00

  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
  

1557 changed files:

• .gitattributes
• .gitignore
• .gitlab-ci.yml
• .gitlab/ci.sh
• .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/Uniques.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/Pipeline.hs
• 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/ConLike.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/CallArity.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/Monad.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/PatSyn.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/Ppr.hs
• compiler/GHC/Core/TyCo/Rep.hs
• compiler/GHC/Core/TyCo/Subst.hs
• compiler/GHC/Core/TyCon.hs
• compiler/GHC/Core/TyCon/Env.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/Prep.hs
• compiler/GHC/Data/Bag.hs
• compiler/GHC/Data/FastString.hs
• compiler/GHC/Data/FlatBag.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/SmallArray.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/Data/Word64Map/Internal.hs
• compiler/GHC/Data/Word64Map/Lazy.hs
• compiler/GHC/Driver/Backend.hs
• compiler/GHC/Driver/Backend/Internal.hs
• compiler/GHC/Driver/Backpack.hs
• + compiler/GHC/Driver/ByteCode.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/Finder.hs
• + compiler/GHC/Driver/Config/Interpreter.hs
• compiler/GHC/Driver/Config/Linker.hs
• compiler/GHC/Driver/Config/Stg/Debug.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/Env/Types.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/Messager.hs
• compiler/GHC/Driver/Monad.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/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/Breakpoints.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/Decl.hs
• compiler/GHC/HsToCore/Foreign/JavaScript.hs
• compiler/GHC/HsToCore/Foreign/Wasm.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/Usage.hs
• compiler/GHC/HsToCore/Utils.hs
• compiler/GHC/Iface/Binary.hs
• compiler/GHC/Iface/Decl.hs
• compiler/GHC/Iface/Env.hs
• compiler/GHC/Iface/Errors.hs
• compiler/GHC/Iface/Errors/Ppr.hs
• compiler/GHC/Iface/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/Flags.hs
• compiler/GHC/Iface/Load.hs
• compiler/GHC/Iface/Make.hs
• compiler/GHC/Iface/Recomp.hs
• compiler/GHC/Iface/Recomp/Flags.hs
• compiler/GHC/Iface/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/Header.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.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/Unbound.hs
• compiler/GHC/Rename/Utils.hs
• compiler/GHC/Runtime/Debugger.hs
• compiler/GHC/Runtime/Eval.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/Debug/Types.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/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/Ids.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/Solve.hs-boot
• 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/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/TcType.hs
• compiler/GHC/Tc/Utils/Unify.hs
• compiler/GHC/Tc/Utils/Unify.hs-boot
• 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/SourceError.hs
• compiler/GHC/Types/SourceText.hs
• compiler/GHC/Types/SptEntry.hs
• compiler/GHC/Types/SrcLoc.hs
• compiler/GHC/Types/Tickish.hs
• compiler/GHC/Types/TyThing.hs
• compiler/GHC/Types/TyThing/Ppr.hs
• compiler/GHC/Types/Unique.hs
• compiler/GHC/Types/Unique/DFM.hs
• compiler/GHC/Types/Unique/DSM.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/Unique/Supply.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/Finder/Types.hs
• compiler/GHC/Unit/Home/ModInfo.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/Location.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/EndoOS.hs
• compiler/GHC/Utils/Error.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/Codensity.hs
• compiler/GHC/Utils/Outputable.hs
• compiler/GHC/Utils/Panic.hs
• compiler/GHC/Utils/Panic/Plain.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/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/9.16.1-notes.rst
• − docs/users_guide/Makefile
• docs/users_guide/bugs.rst
• docs/users_guide/compare-flags.py
• docs/users_guide/conf.py
• docs/users_guide/debug-info.rst
• docs/users_guide/debugging.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/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/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/javascript.rst
• docs/users_guide/packages.rst
• docs/users_guide/phases.rst
• docs/users_guide/profiling.rst
• 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/config.mk.in
• hadrian/bindist/cwrappers/cwrapper.c
• 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/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/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/Common.hs
• hadrian/src/Settings/Builders/DeriveConstants.hs
• hadrian/src/Settings/Builders/Ghc.hs
• hadrian/src/Settings/Builders/Hsc2Hs.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/Makefile
• libraries/base/base.cabal.in
• libraries/base/changelog.md
• libraries/base/src/Data/Bifoldable1.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/Base.hs
• libraries/base/src/GHC/Conc.hs
• libraries/base/src/GHC/Conc/Sync.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/System/IO.hs
• libraries/base/tests/IO/T12010/cbits/initWinSock.c
• libraries/base/tests/all.T
• − libraries/doc/Makefile
• libraries/exceptions
• libraries/ghc-boot-th/GHC/Boot/TH/Ppr.hs
• libraries/ghc-boot/GHC/Unit/Database.hs
• libraries/ghc-boot/Setup.hs
• libraries/ghc-boot/ghc-boot.cabal.in
• libraries/ghc-experimental/CHANGELOG.md
• libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs
• + libraries/ghc-internal/cbits/RtsIface.c
• libraries/ghc-internal/cbits/Stack_c.c
• libraries/ghc-internal/cbits/consUtils.c
• − libraries/ghc-internal/cbits/mulIntMayOflo.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/include/RtsIfaceSymbols.h
• libraries/ghc-internal/src/GHC/Internal/CString.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/Monad.hs
• libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs
• libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs
• libraries/ghc-internal/src/GHC/Internal/Event/Thread.hs
• libraries/ghc-internal/src/GHC/Internal/Event/Windows/Thread.hs
• libraries/ghc-internal/src/GHC/Internal/Exception/Context.hs
• libraries/ghc-internal/src/GHC/Internal/Float.hs
• libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs
• libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs
• libraries/ghc-internal/src/GHC/Internal/List.hs
• + libraries/ghc-internal/src/GHC/Internal/STM.hs
• + libraries/ghc-internal/src/GHC/Internal/Stack/ConstantsProf.hsc
• 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/TH/Lift.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Syntax.hs
• + libraries/ghc-internal/tests/backtraces/T26507.hs
• + libraries/ghc-internal/tests/backtraces/T26507.stderr
• libraries/ghc-internal/tests/backtraces/all.T
• libraries/ghc-internal/tests/stack-annotation/all.T
• libraries/ghc-platform/src/GHC/Platform/ArchOS.hs
• libraries/ghc-prim/changelog.md
• libraries/haskeline
• + libraries/libffi-clib
• libraries/mtl
• libraries/os-string
• + libraries/template-haskell-lift
• + libraries/template-haskell-quasiquoter
• libraries/template-haskell/vendored-filepath/System/FilePath/Posix.hs
• libraries/template-haskell/vendored-filepath/System/FilePath/Windows.hs
• libraries/unix
• libraries/xhtml
• linters/lint-codes/LintCodes/Static.hs
• − linters/lint-codes/Makefile
• − linters/lint-notes/Makefile
• llvm-passes
• − m4/find_ghc_bootstrap_prog.m4
• m4/fp_check_pthreads.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_alex.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/Apply.cmm
• rts/BuiltinClosures.c
• rts/CloneStack.h
• rts/Compact.cmm
• rts/ContinuationOps.cmm
• rts/Exception.cmm
• rts/Interpreter.c
• rts/Jumps.h
• − rts/Makefile
• rts/Prelude.h
• rts/PrimOps.cmm
• rts/Printer.c
• rts/RtsAPI.c
• rts/RtsFlags.c
• rts/RtsMessages.c
• rts/RtsStartup.c
• rts/RtsSymbols.c
• + rts/RtsToHsIface.c
• rts/StgMiscClosures.cmm
• rts/StgStartup.cmm
• rts/StgStdThunks.cmm
• rts/ThreadPaused.c
• rts/configure.ac
• rts/eventlog/EventLog.c
• − rts/external-symbols.list.in
• rts/gen_event_types.py
• − rts/include/Makefile
• rts/include/Rts.h
• rts/include/RtsAPI.h
• rts/include/Stg.h
• rts/include/rts/Bytecodes.h
• rts/include/rts/Messages.h
• + rts/include/rts/RtsToHsIface.h
• rts/include/rts/Types.h
• rts/include/rts/ghc_ffi.h
• rts/include/rts/storage/Block.h
• rts/include/stg/Prim.h
• rts/include/stg/Types.h
• rts/linker/Elf.c
• rts/linker/InitFini.c
• rts/linker/LoadArchive.c
• rts/linker/PEi386.c
• rts/posix/OSMem.c
• rts/posix/Signals.c
• libraries/ghc-internal/cbits/atomic.c → rts/prim/atomic.c
• libraries/ghc-internal/cbits/bitrev.c → rts/prim/bitrev.c
• libraries/ghc-internal/cbits/bswap.c → rts/prim/bswap.c
• libraries/ghc-internal/cbits/clz.c → rts/prim/clz.c
• libraries/ghc-internal/cbits/ctz.c → rts/prim/ctz.c
• libraries/ghc-internal/cbits/int64x2minmax.c → rts/prim/int64x2minmax.c
• libraries/ghc-internal/cbits/longlong.c → rts/prim/longlong.c
• + rts/prim/mulIntMayOflo.c
• libraries/ghc-internal/cbits/pdep.c → rts/prim/pdep.c
• libraries/ghc-internal/cbits/pext.c → rts/prim/pext.c
• libraries/ghc-internal/cbits/popcnt.c → rts/prim/popcnt.c
• libraries/ghc-internal/cbits/vectorQuotRem.c → rts/prim/vectorQuotRem.c
• libraries/ghc-internal/cbits/word2float.c → rts/prim/word2float.c
• rts/rts.buildinfo.in
• rts/rts.cabal
• rts/sm/NonMoving.c
• rts/sm/NonMovingMark.c
• rts/sm/Sanity.c
• rts/sm/Scav.c
• rts/wasm/JSFFI.c
• rts/wasm/scheduler.cmm
• − 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/perf_notes.py
• testsuite/driver/runtests.py
• testsuite/driver/testglobals.py
• testsuite/driver/testlib.py
• testsuite/ghc-config/ghc-config.hs
• testsuite/mk/boilerplate.mk
• testsuite/mk/test.mk
• 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/T24634/T24634a.stdout
• testsuite/tests/bytecode/T24634/T24634b.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/mavx-should-enable-popcnt.asm
• + testsuite/tests/codeGen/should_gen_asm/mavx-should-enable-popcnt.hs
• + testsuite/tests/codeGen/should_gen_asm/msse-option-order.asm
• + testsuite/tests/codeGen/should_gen_asm/msse-option-order.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/concurrent/prog001/all.T
• testsuite/tests/count-deps/CountDepsAst.stdout
• testsuite/tests/count-deps/CountDepsParser.stdout
• testsuite/tests/cpranal/should_compile/T18174.stderr
• testsuite/tests/default/default-fail05.stderr
• testsuite/tests/dependent/should_fail/T11334b.stderr
• testsuite/tests/dependent/should_fail/T13135_simple.stderr
• testsuite/tests/deriving/should_fail/T3621.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/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/T11429c.stderr
• + testsuite/tests/driver/T20696/T20696.stderr-ext-interp
• testsuite/tests/driver/T21682.stderr
• + testsuite/tests/driver/T24120.hs
• + testsuite/tests/driver/T26551.hs
• + testsuite/tests/driver/T26551.stderr
• testsuite/tests/driver/T5313.hs
• testsuite/tests/driver/all.T
• + testsuite/tests/driver/bytecode-object/A.hs
• + testsuite/tests/driver/bytecode-object/BytecodeForeign.c
• + testsuite/tests/driver/bytecode-object/BytecodeForeign.hs
• + testsuite/tests/driver/bytecode-object/BytecodeMain.hs
• + testsuite/tests/driver/bytecode-object/BytecodeTest.hs
• + testsuite/tests/driver/bytecode-object/Makefile
• + testsuite/tests/driver/bytecode-object/all.T
• + testsuite/tests/driver/bytecode-object/bytecode_object12.stderr
• + testsuite/tests/driver/bytecode-object/bytecode_object13.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object14.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object15.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object16.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object17.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object18.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object19.script
• + 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/bytecode-object/bytecode_object25.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object4.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object5.stdout
• + testsuite/tests/driver/bytecode-object/bytecode_object6.stdout
• testsuite/tests/driver/fat-iface/T22405/T22405.stdout
• testsuite/tests/driver/fat-iface/T22405/T22405b.stdout
• testsuite/tests/driver/fat-iface/fat011.stderr
• + testsuite/tests/driver/fat-iface/fat012.stderr-ext-interp
• + 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/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/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/generics/T10604/T10604_deriving.stderr
• + testsuite/tests/ghc-api-browser/README.md
• + testsuite/tests/ghc-api-browser/all.T
• + testsuite/tests/ghc-api-browser/index.html
• + testsuite/tests/ghc-api-browser/playground001.hs
• + testsuite/tests/ghc-api-browser/playground001.js
• + testsuite/tests/ghc-api-browser/playground001.sh
• testsuite/tests/ghci-wasm/T26431.stdout → testsuite/tests/ghc-api-browser/playground001.stdout
• testsuite/tests/ghc-api/T10052/T10052.hs
• testsuite/tests/ghc-api/T10942.hs
• + testsuite/tests/ghc-api/T26264.hs
• + testsuite/tests/ghc-api/T26264.stdout
• testsuite/tests/ghc-api/T8639_api.hs
• testsuite/tests/ghc-api/all.T
• testsuite/tests/ghc-api/annotations-literals/literals.hs
• testsuite/tests/ghc-api/apirecomp001/myghc.hs
• testsuite/tests/ghc-e/should_fail/T9930fail.stderr
• testsuite/tests/ghc-e/should_fail/all.T
• − testsuite/tests/ghci-wasm/T26431.hs
• testsuite/tests/ghci-wasm/all.T
• testsuite/tests/ghci.debugger/scripts/print012.stdout
• testsuite/tests/ghci/linking/dyn/T3372.hs
• testsuite/tests/ghci/scripts/T10321.stdout
• testsuite/tests/ghci/scripts/T24459.stdout
• testsuite/tests/ghci/scripts/T7730.stdout
• 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/PackedDataCon/packeddatacon.T
• testsuite/tests/ghci/should_run/UnboxedTuples/unboxedtuples.T
• testsuite/tests/ghci/should_run/UnliftedDataTypeInterp/unlifteddatatypeinterp.T
• 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/T14369.stderr
• testsuite/tests/indexed-types/should_fail/T14887.stderr
• testsuite/tests/indexed-types/should_fail/T1897b.stderr
• 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/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/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/T19361.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/all.T
• testsuite/tests/linters/notes.stdout
• testsuite/tests/llvm/should_run/all.T
• + 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/module/mod4.stderr
• 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_compile/BootFldReexport.stderr
• testsuite/tests/overloadedrecflds/should_fail/DRFHoleFits.stderr
• testsuite/tests/overloadedrecflds/should_fail/T16745.stderr
• testsuite/tests/overloadedrecflds/should_fail/T18999_NoDisambiguateRecordFields.stderr
• + testsuite/tests/overloadedrecflds/should_fail/T26480.hs
• + testsuite/tests/overloadedrecflds/should_fail/T26480.stderr
• + testsuite/tests/overloadedrecflds/should_fail/T26480_aux1.hs
• + testsuite/tests/overloadedrecflds/should_fail/T26480_aux2.hs
• + testsuite/tests/overloadedrecflds/should_fail/T26480b.hs
• + testsuite/tests/overloadedrecflds/should_fail/T26480b.stderr
• testsuite/tests/overloadedrecflds/should_fail/all.T
• testsuite/tests/overloadedrecflds/should_fail/hasfieldfail01.stderr
• testsuite/tests/overloadedrecflds/should_fail/hasfieldfail02.stderr
• testsuite/tests/parser/should_compile/DumpTypecheckedAst.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail10.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail11.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail13.stderr
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail8.hs
• testsuite/tests/parser/should_fail/RecordDotSyntaxFail8.stderr
• + testsuite/tests/parser/should_fail/T12488c.hs
• + testsuite/tests/parser/should_fail/T12488c.stderr
• + testsuite/tests/parser/should_fail/T12488d.hs
• + testsuite/tests/parser/should_fail/T12488d.stderr
• testsuite/tests/parser/should_fail/T20654a.stderr
• testsuite/tests/parser/should_fail/all.T
• testsuite/tests/partial-sigs/should_fail/T14584a.stderr
• + testsuite/tests/patsyn/should_compile/T26465b.hs
• + testsuite/tests/patsyn/should_compile/T26465c.hs
• + testsuite/tests/patsyn/should_compile/T26465d.hs
• + testsuite/tests/patsyn/should_compile/T26465d.stderr
• testsuite/tests/patsyn/should_compile/all.T
• + testsuite/tests/patsyn/should_fail/T26465.hs
• + testsuite/tests/patsyn/should_fail/T26465.stderr
• 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/perf/compiler/Makefile
• + testsuite/tests/perf/compiler/MultiLayerModulesDefsGhciWithBytecodeFiles.script
• + testsuite/tests/perf/compiler/T26425.hs
• testsuite/tests/perf/compiler/all.T
• testsuite/tests/perf/compiler/hard_hole_fits.stderr
• testsuite/tests/perf/should_run/T3586.hs
• testsuite/tests/perf/should_run/UniqLoop.hs
• testsuite/tests/perf/should_run/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/T26400.hs
• + testsuite/tests/pmcheck/should_compile/T26400.stderr
• + testsuite/tests/pmcheck/should_compile/T26400b.hs
• testsuite/tests/pmcheck/should_compile/all.T
• testsuite/tests/pmcheck/should_compile/pmcOrPats.stderr
• + testsuite/tests/polykinds/T13882.hs
• testsuite/tests/polykinds/T6068.stdout
• testsuite/tests/polykinds/all.T
• testsuite/tests/quantified-constraints/T15316A.stderr
• testsuite/tests/quantified-constraints/T15359.hs
• 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/regalloc/regalloc_unit_tests.hs
• + testsuite/tests/rename/should_compile/T12488b.hs
• + testsuite/tests/rename/should_compile/T12488f.hs
• + 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/T12488a.hs
• + testsuite/tests/rename/should_fail/T12488a.stderr
• + testsuite/tests/rename/should_fail/T12488a_foo.hs
• + testsuite/tests/rename/should_fail/T12488a_foo.stderr
• + testsuite/tests/rename/should_fail/T12488e.hs
• + testsuite/tests/rename/should_fail/T12488e.stderr
• + testsuite/tests/rename/should_fail/T12488g.hs
• + testsuite/tests/rename/should_fail/T12488g.stderr
• testsuite/tests/rename/should_fail/T19843h.stderr
• testsuite/tests/rename/should_fail/T23570b.stderr
• testsuite/tests/rename/should_fail/T25899e2.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/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/RepPolyNPlusK.stderr
• testsuite/tests/rep-poly/RepPolyRightSection.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/T19709b.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/T23903.stderr
• + testsuite/tests/rep-poly/T26072.hs
• + testsuite/tests/rep-poly/T26072b.hs
• + testsuite/tests/rep-poly/T26528.hs
• testsuite/tests/rep-poly/UnliftedNewtypesLevityBinder.stderr
• testsuite/tests/rep-poly/all.T
• testsuite/tests/roles/should_compile/Roles13.stderr
• testsuite/tests/rts/KeepCafsBase.hs
• testsuite/tests/rts/T22859.hs
• testsuite/tests/rts/all.T
• + testsuite/tests/rts/ipe/distinct-tables/Main.hs
• + testsuite/tests/rts/ipe/distinct-tables/Makefile
• + testsuite/tests/rts/ipe/distinct-tables/X.hs
• + testsuite/tests/rts/ipe/distinct-tables/all.T
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables01.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables02.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables03.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables04.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables05.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables06.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables07.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables08.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables09.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables10.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables11.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables12.stdout
• + testsuite/tests/rts/ipe/distinct-tables/distinct_tables13.stdout
• testsuite/tests/rts/linker/rdynamic.hs
• testsuite/tests/saks/should_compile/saks023.stdout
• testsuite/tests/saks/should_compile/saks034.stdout
• testsuite/tests/saks/should_compile/saks035.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/simd/should_run/simd015.hs
• + testsuite/tests/simd/should_run/simd015.stdout
• + testsuite/tests/simd/should_run/simd016.hs
• + testsuite/tests/simd/should_run/simd016.stdout
• + testsuite/tests/simd/should_run/simd017.hs
• + testsuite/tests/simd/should_run/simd017.stdout
• testsuite/tests/simplCore/should_compile/OpaqueNoCastWW.stderr
• testsuite/tests/simplCore/should_compile/T14003.stderr
• testsuite/tests/simplCore/should_compile/T17673.stderr
• testsuite/tests/simplCore/should_compile/T18013.stderr
• testsuite/tests/simplCore/should_compile/T18078.stderr
• testsuite/tests/simplCore/should_compile/T18995.stderr
• testsuite/tests/simplCore/should_compile/T19672.stderr
• testsuite/tests/simplCore/should_compile/T19890.stderr
• testsuite/tests/simplCore/should_compile/T21763.stderr
• testsuite/tests/simplCore/should_compile/T21763a.stderr
• testsuite/tests/simplCore/should_compile/T21948.stderr
• testsuite/tests/simplCore/should_compile/T21960.stderr
• testsuite/tests/simplCore/should_compile/T24808.stderr
• − testsuite/tests/simplCore/should_compile/T25713.stderr
• + testsuite/tests/simplCore/should_compile/T26349.hs
• + testsuite/tests/simplCore/should_compile/T26349.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/T4201.stdout
• 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/rule2.stderr
• testsuite/tests/simplCore/should_compile/spec-inline.stderr
• testsuite/tests/simplStg/should_compile/T22840.stderr
• testsuite/tests/simplStg/should_compile/all.T
• + testsuite/tests/splice-imports/SI07.stderr-ext-interp
• testsuite/tests/th/T15321.stderr
• + testsuite/tests/th/T26099.hs
• + testsuite/tests/th/T26099.stderr
• + testsuite/tests/th/T26568.hs
• + testsuite/tests/th/T26568.stderr
• testsuite/tests/th/T8761.stderr
• testsuite/tests/th/all.T
• testsuite/tests/typecheck/T16127/T16127.stderr
• testsuite/tests/typecheck/no_skolem_info/T13499.stderr
• testsuite/tests/typecheck/no_skolem_info/T20232.stderr
• testsuite/tests/typecheck/should_compile/T13050.stderr
• testsuite/tests/typecheck/should_compile/T13651.hs
• − testsuite/tests/typecheck/should_compile/T13651.stderr
• testsuite/tests/typecheck/should_compile/T14273.stderr
• testsuite/tests/typecheck/should_compile/T14590.stderr
• + testsuite/tests/typecheck/should_compile/T14745.hs
• testsuite/tests/typecheck/should_compile/T16188.hs
• + testsuite/tests/typecheck/should_compile/T17705.hs
• testsuite/tests/typecheck/should_compile/T22560d.stdout
• testsuite/tests/typecheck/should_compile/T25180.stderr
• + testsuite/tests/typecheck/should_compile/T26451.hs
• + testsuite/tests/typecheck/should_compile/T26582.hs
• + testsuite/tests/typecheck/should_compile/T26746.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/hole_constraints_nested.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/tc126.hs
• 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/AmbigFDs.hs
• − testsuite/tests/typecheck/should_fail/AmbigFDs.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/T11672.stderr
• testsuite/tests/typecheck/should_fail/T12373.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/T15807.stderr
• testsuite/tests/typecheck/should_fail/T15883e.stderr
• testsuite/tests/typecheck/should_fail/T16074.stderr
• testsuite/tests/typecheck/should_fail/T16512a.stderr
• testsuite/tests/typecheck/should_fail/T18357a.stderr
• testsuite/tests/typecheck/should_fail/T18851b.hs
• − testsuite/tests/typecheck/should_fail/T18851b.stderr
• testsuite/tests/typecheck/should_fail/T18851c.hs
• − testsuite/tests/typecheck/should_fail/T18851c.stderr
• testsuite/tests/typecheck/should_fail/T19415.stderr
• testsuite/tests/typecheck/should_fail/T19415b.stderr
• testsuite/tests/typecheck/should_fail/T19627.stderr
• testsuite/tests/typecheck/should_fail/T20241b.stderr
• testsuite/tests/typecheck/should_fail/T21530a.stderr
• testsuite/tests/typecheck/should_fail/T22684.stderr
• testsuite/tests/typecheck/should_fail/T22924b.stderr
• + testsuite/tests/typecheck/should_fail/T23162a.hs
• + testsuite/tests/typecheck/should_fail/T23162a.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/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/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/T7368a.stderr
• testsuite/tests/typecheck/should_fail/T7696.stderr
• testsuite/tests/typecheck/should_fail/T8603.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/TcStaticPointersFail03.stderr
• testsuite/tests/typecheck/should_fail/UnliftedNewtypesFamilyKindFail2.stderr
• testsuite/tests/typecheck/should_fail/VisFlag1.stderr
• testsuite/tests/typecheck/should_fail/all.T
• testsuite/tests/typecheck/should_fail/tcfail122.stderr
• testsuite/tests/typecheck/should_fail/tcfail143.stderr
• testsuite/tests/unboxedsums/UbxSumUnpackedSize.hs
• + testsuite/tests/warnings/should_compile/DodgyExports02.hs
• + testsuite/tests/warnings/should_compile/DodgyExports02.stderr
• + testsuite/tests/warnings/should_compile/DodgyExports03.hs
• + 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/DuplicateModExport.hs
• + testsuite/tests/warnings/should_compile/DuplicateModExport.stderr
• + testsuite/tests/warnings/should_compile/EmptyModExport.hs
• + testsuite/tests/warnings/should_compile/EmptyModExport.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
• utils/check-exact/ExactPrint.hs
• utils/check-exact/Main.hs
• utils/check-exact/Parsers.hs
• utils/check-exact/Preprocess.hs
• utils/check-exact/Transform.hs
• utils/check-exact/Utils.hs
• utils/deriveConstants/Main.hs
• utils/genapply/Main.hs
• utils/genprimopcode/genprimopcode.cabal
• utils/ghc-pkg/Main.hs
• utils/ghc-toolchain/exe/Main.hs
• utils/ghc-toolchain/ghc-toolchain.cabal
• utils/ghc-toolchain/src/GHC/Toolchain/CheckArm.hs
• + utils/ghc-toolchain/src/GHC/Toolchain/CheckPower.hs
• utils/ghc-toolchain/src/GHC/Toolchain/ParseTriple.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Tools/MergeObjs.hs
• utils/ghc-toolchain/src/GHC/Toolchain/Utils.hs
• utils/haddock/cabal.project
• 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/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/Bug1004.html
• utils/haddock/html-test/ref/Bug1050.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/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/GADTRecords.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/TitledPicture.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

The diff was not included because it is too large.