March 2026 - ghc-commits

[Git][ghc/ghc][wip/T26868] 64 commits: GHCi: add a :version command.
by Simon Peyton Jones (＠simonpj) 09 Mar '26

09 Mar '26

Simon Peyton Jones pushed to branch wip/T26868 at Glasgow Haskell Compiler / GHC Commits: 44354255 by Vo Minh Thu at 2026-02-20T18:53:06-05:00 GHCi: add a :version command. This looks like: ghci> :version GHCi, version 9.11.20240322 This closes #24576. Co-Author: Markus Läll <markus.l2ll(a)gmail.com> - - - - - eab3dbba by Andreas Klebinger at 2026-02-20T18:53:51-05:00 hadrian/build-cabal: Better respect and utilize -j * We now respect -j<n> for the cabal invocation to build hadrian rather than hardcoding -j * We use the --semaphore flag to ensure cabal/ghc build the hadrian executable in parallel using the -jsem mechanism. Saves 10-15s on fresh builds for me. Fixes #26876 - - - - - 17839248 by Teo Camarasu at 2026-02-24T08:36:03-05:00 ghc-internal: avoid depending on GHC.Internal.Control.Monad.Fix This module contains the definition of MonadFix, since we want an instance for IO, that instance requires a lot of machinery and we want to avoid an orphan instance, this will naturally be quite high up in the dependency graph. So we want to avoid other modules depending on it as far as possible. On Windows, the IO manager depends on the RTSFlags type, which transtively depends on MonadFix. We refactor things to avoid this dependency, which would have caused a regression. Resolves #26875 Metric Decrease: T12227 - - - - - fa88d09a by Wolfgang Jeltsch at 2026-02-24T08:36:47-05:00 Refine the imports of `System.IO.OS` Commit 68bd08055594b8cbf6148a72d108786deb6c12a1 replaced the `GHC.Internal.Data.Bool` import by a `GHC.Internal.Base` import. However, while the `GHC.Internal.Data.Bool` import was conditional and partial, the `GHC.Internal.Base` import is unconditional and total. As a result, the import list is not tuned to import only the necessary bits anymore, and furthermore GHC emits a lot of warnings about redundant imports. This commit makes the `GHC.Internal.Base` import conditional and partial in the same way that the `GHC.Internal.Data.Bool` import was. - - - - - c951fef1 by Cheng Shao at 2026-02-25T20:58:28+00:00 wasm: add /assets endpoint to serve user-specified assets This patch adds an `/assets` endpoint to the wasm dyld http server, so that users can also fetch assets from the same host with sensible default MIME types, without needing a separate http server for assets that also introduces CORS headaches: - A `-fghci-browser-assets-dir` driver flag is added to specify the assets root directory (defaults to `$PWD`) - The dyld http server fetches `mime-db` on demand and uses it as source of truth for mime types. Closes #26951. - - - - - dde22f97 by Sylvain Henry at 2026-02-26T13:14:03-05:00 Fix -fcheck-prim-bounds for non constant args (#26958) Previously we were only checking bounds for constant (literal) arguments! I've refactored the code to simplify the generation of out-of-line Cmm code for the primop composed of some inline code + some call to an external Cmm function. - - - - - bd3eba86 by Vladislav Zavialov at 2026-02-27T05:48:01-05:00 Check for negative type literals in the type checker (#26861) GHC disallows negative type literals (e.g., -1), as tested by T8306 and T8412. This check is currently performed in the renamer: rnHsTyLit tyLit@(HsNumTy x i) = do when (i < 0) $ addErr $ TcRnNegativeNumTypeLiteral tyLit However, this check can be bypassed using RequiredTypeArguments (see the new test case T26861). Prior to this patch, such programs caused the compiler to hang instead of reporting a proper error. This patch addresses the issue by adding an equivalent check in the type checker, namely in tcHsType. The diff is deliberately minimal to facilitate backporting. A more comprehensive rework of HsTyLit is planned for a separate commit. - - - - - faf14e0c by Vladislav Zavialov at 2026-02-27T05:48:45-05:00 Consistent pretty-printing of HsString, HsIsString, HsStrTy Factor out a helper to pretty-print string literals, thus fixing newline handling for overloaded string literals and type literals. Test cases: T26860ppr T26860ppr_overloaded T26860ppr_tylit Follow up to ddf1434ff9bb08cfef3c93f23de6b83ec698aa27 - - - - - f108a972 by Arnaud Spiwack at 2026-02-27T12:53:01-05:00 Make list comprehension completely non-linear Fixes #25081 From the note: The usefulness of list comprehension in conjunction with linear types is dubious. After all, statements are made to be run many times, for instance in ```haskell [u | y <- [0,1], stmts] ``` both `u` and `stmts` are going to be run several times. In principle, though, there are some position in a monad comprehension expression which could be considered linear. We could try and make it so that these positions are considered linear by the typechecker, but in practice the desugarer doesn't take enough care to ensure that these are indeed desugared to linear sites. We tried in the past, and it turned out that we'd miss a desugaring corner case (#25772). Until there's a demand for this very specific improvement, let's instead be conservative, and consider list comprehension to be completely non-linear. - - - - - ae799cab by Simon Jakobi at 2026-02-27T12:53:54-05:00 PmAltConSet: Use Data.Set instead of Data.Map ...to store `PmLit`s. The Map was only used to map keys to themselves. Changing the Map to a Set saves a Word of memory per entry. Resolves #26756. - - - - - dcd7819c by Vladislav Zavialov at 2026-02-27T18:46:03-05:00 Drop HsTyLit in favor of HsLit (#26862, #25121) This patch is a small step towards unification of HsExpr and HsType, taking care of literals (HsLit) and type literals (HsTyLit). Additionally, it improves error messages for unsupported type literals, such as unboxed or fractional literals (test cases: T26862, T26862_th). Changes to the AST: * Use HsLit where HsTyLit was previously used * Use HsChar where HsCharTy was previously used * Use HsString where HsStrTy was previously used * Use HsNatural (NEW) where HsNumTy was previously used * Use HsDouble (NEW) to represent unsupported fractional type literals Changes to logic: * Parse unboxed and fractional type literals (to be rejected later) * Drop the check for negative literals in the renamer (rnHsTyLit) in favor of checking in the type checker (tc_hs_lit_ty) * Check for invalid type literals in TH (repTyLit) and report unrepresentable literals with ThUnsupportedTyLit * Allow negative type literals in TH (numTyLit). This is fine as these will be taken care of at splice time (test case: T8306_th) - - - - - c927954f by Vladislav Zavialov at 2026-02-27T18:46:50-05:00 Increase test coverage of diagnostics Add test cases for the previously untested diagnostics: [GHC-01239] PsErrIfInFunAppExpr [GHC-04807] PsErrProcInFunAppExpr [GHC-08195] PsErrInvalidRecordCon [GHC-16863] PsErrUnsupportedBoxedSumPat [GHC-18910] PsErrSemiColonsInCondCmd [GHC-24737] PsErrInvalidWhereBindInPatSynDecl [GHC-25037] PsErrCaseInFunAppExpr [GHC-25078] PsErrPrecedenceOutOfRange [GHC-28021] PsErrRecordSyntaxInPatSynDecl [GHC-35827] TcRnNonOverloadedSpecialisePragma [GHC-40845] PsErrUnpackDataCon [GHC-45106] PsErrInvalidInfixHole [GHC-50396] PsErrInvalidRuleActivationMarker [GHC-63930] MultiWayIfWithoutAlts [GHC-65536] PsErrNoSingleWhereBindInPatSynDecl [GHC-67630] PsErrMDoInFunAppExpr [GHC-70526] PsErrLetCmdInFunAppCmd [GHC-77808] PsErrDoCmdInFunAppCmd [GHC-86934] ClassPE [GHC-90355] PsErrLetInFunAppExpr [GHC-91745] CasesExprWithoutAlts [GHC-92971] PsErrCaseCmdInFunAppCmd [GHC-95644] PsErrBangPatWithoutSpace [GHC-97005] PsErrIfCmdInFunAppCmd Remove unused error constructors: [GHC-44524] PsErrExpectedHyphen [GHC-91382] TcRnIllegalKindSignature - - - - - 3a9470fd by Torsten Schmits at 2026-02-27T18:47:34-05:00 Avoid expensive computation for debug logging in `mergeDatabases` when log level is low This computed and traversed a set intersection for every single dependency unconditionally. - - - - - ea4c2cbd by Brandon Chinn at 2026-02-27T16:22:38-08:00 Implement QualifiedStrings (#26503) See Note [Implementation of QualifiedStrings] - - - - - 08bc245b by sheaf at 2026-03-01T11:11:54-05:00 Clean up join points, casts & ticks This commit shores up the logic dealing with casts and ticks occurring in between a join point binding and a jump. Fixes #26642 #26929 #26693 Makes progress on #14610 #26157 #26422 Changes: - Remove 'GHC.Types.Tickish.TickishScoping' in favour of simpler predicates 'tickishHasNoScope'/'tickishHasSoftScope', as things were before commit 993975d3. This makes the code easier to read and document (fewer indirections). - Introduce 'canCollectArgsThroughTick' for consistent handling of ticks around PrimOps and other 'Id's that cannot be eta-reduced. See overhauled Note [Ticks and mandatory eta expansion]. - New Note [JoinId vs TailCallInfo] in GHC.Core.SimpleOpt that explains robustness of JoinId vs fragility of TailCallInfo. - Allow casts/non-soft-scoped ticks to occur in between a join point binder and a jump, but only in Core Prep. See Note [Join points, casts, and ticks] and Note [Join points, casts, and ticks... in Core Prep] in GHC.Core.Opt.Simplify.Iteration. Also update Core Lint to account for this. See Note [Linting join points with casts or ticks] in GHC.Core.Lint. - Update 'GHC.Core.Utils.mergeCaseAlts' to avoid pushing a cast in between a join point binding and its jumps. This fixes #26642. See the new (MC5) and (MC6) in Note [Merge Nested Cases]. - Update float out to properly handle source note ticks. They are now properly floated out instead of being discarded. This increases the number of ticks in certain tests with -g. Test cases: T26642 and TrickyJoins. Metric increase due to more source note ticks with -g: ------------------------- Metric Increase: libdir size_hello_artifact size_hello_unicode ------------------------- - - - - - 476c4cdf by Sean D. Gillespie at 2026-03-02T10:14:37-05:00 Add SIMD absolute value on x86 and LLVM On x86, absolute value of 32 bits or less is implemented with PABSB/PABSW/PABSD if SSSE3 is available. Otherwise, there is a fallback for SSE2. For 64 bit integers it uses VPABSQ, required by AVX-512VL, with fallbacks for SSE4.2 and SSE2. There is no dedicated instruction for floating point absolute value on x86, so it is simulated using bitwise AND. Absolute value for signed integers and floats are implemented by the "llvm.abs/llvm.fabs" standard library intrinsics. This implementation uses MachOps constructors, unlike non-vector floating point absolute value, which uses CallishMachOps. - - - - - 709448c0 by Sean D. Gillespie at 2026-03-02T10:14:46-05:00 Add SIMD floating point square root On x86, this is implemented with the SQRTPS and SQRTPD instructions. On LLVM, it uses the sqrt library intrinstic. - - - - - 0deadf66 by Sean D. Gillespie at 2026-03-02T10:14:47-05:00 Improve error message for SIMD on aarch64 When encountering vector literals on aarch64, previously it would throw: <no location info>: error: panic! (the 'impossible' happened) GHC version 9.15.20251219: getRegister' (CmmLit:CmmVec): Now it is more consistent with the other vector operations: <no location info>: error: sorry! (unimplemented feature or known bug) GHC version 9.15.20251219: SIMD operations on AArch64 currently require the LLVM backend - - - - - 7d64031b by Vladislav Zavialov at 2026-03-03T11:09:28-05:00 Replace maybeAddSpace with spaceIfSingleQuote Simplify pretty-printing of HsTypes by using spaceIfSingleQuote. This allows us to drop the unwieldy lhsTypeHasLeadingPromotionQuote helper function. Follow-up to 178c1fd830c78377ef5d338406a41e1d8eb5f0da - - - - - 598db847 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Correct `hIsReadable` and `hIsWritable` for duplex handles This contribution implements CLC proposal #371. It changes `hIsReadable` and `hIsWritable` such that they always throw a respective exception when encountering a closed or semi-closed handle, not just in the case of a file handle. - - - - - b90201e5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Document `SemiClosedHandle` - - - - - c9df72b5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Tell users what “semi-closed” means for duplex handles - - - - - a8aa1868 by Ilias Tsitsimpis at 2026-03-06T06:26:29-05:00 Fix determinism of linker arguments The switch from Data.Map to UniqMap in 3b5be05ac29 introduced non-determinism in the order of packages passed to the linker. This resulted in non-reproducible builds where the DT_NEEDED entries in dynamic libraries were ordered differently across builds. Fix the regression by explicitly sorting the package list derived from UniqMap. Fixes #26838 - - - - - 9b64ad3a by Matthew Pickering at 2026-03-06T06:27:16-05:00 determinism: Use a deterministic renaming when writing bytecode files Now when writing the bytecode file, a counter and substitution are used to provide deterministic keys to local variables (rather than relying on uniques). This change ensures that `.gbc` are produced deterministically. Fixes #26499 - - - - - d29800e0 by Teo Camarasu at 2026-03-06T06:28:46-05:00 ghc-internal: delete Version hs-boot loop Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module. Resolves #26940 - - - - - ad25af90 by Sylvain Henry at 2026-03-06T06:30:33-05:00 Linker: implement support for COMMON symbols (#6107) Add some support for COMMON symbols. We don't support common symbols having different sizes where the larger one is allocated after the smaller one. The linker will fail with an appropriate error message if it happens. - - - - - 3b59f158 by Cheng Shao at 2026-03-06T06:31:16-05:00 compiler: fix redundant import of GHC.Hs.Lit This patch removes a redundant import of `GHC.Hs.Lit` which causes a ghc build failure with validate flavours when bootstrapping from 9.14. Fixes #26972. - - - - - 148d36f3 by Cheng Shao at 2026-03-06T06:32:01-05:00 compiler: avoid unneeded traversals in GHC.Unit.State Following !15591, this patch avoids unneeded traversals in `reportCycles`/`reportUnusable` when log verbosity is below given threshold. Also applies `logVerbAtLeast` when appropriate. Co-authored-by: Codex <codex(a)openai.com> - - - - - 7e31367c by Cheng Shao at 2026-03-06T06:32:46-05:00 ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool This patch fixes redundant import in `GHC.Internal.Event.Windows.ManagedThreadPool` that causes a compilation error when building windows target with validate flavours and bootstrapping from 9.14. Fixes #26976. - - - - - fc8b8e27 by sheaf at 2026-03-06T06:33:28-05:00 System.Info.fullCompilerVersion: add 'since' annot Fixes #26973 - - - - - c8238375 by Sylvain Henry at 2026-03-06T06:34:23-05:00 Hadrian: deprecate --bignum and automatically enable +native_bignum for JS Deprecate --bignum=... to select the bignum backend. It's only used to select the native backend, and this can be done with the +native_bignum flavour transformer. Additionally, we automatically enable +native_bignum for the JS target because the GMP backend isn't supported. - - - - - a3ac7074 by Sylvain Henry at 2026-03-06T06:35:17-05:00 JS: fix putEnum/fromEnum (#24593) Don't go through Word16 when serializing Enums. - - - - - 0b36e96c by Andreas Klebinger at 2026-03-06T06:35:58-05:00 Docs: Document -fworker-wrapper-cbv default setting. Fixes #26841 - - - - - eca445e7 by mangoiv at 2026-03-07T05:02:36-05:00 drop deb9/10 from CI, add deb13 debian 9 and 10 are end of life, hence we drop them from our CI, but we do add debian 13. Jobs that were previously run on 9 and 10 run on 13, too, jobs that were run on 10, are run on 11 now. Jobs that were previously run on debian 12 are run on debian 13 now. This MR also updates hadrian's bootstrap plans for that reason. Metric Decrease: T9872d - - - - - 12f8b829 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Fix GHC.Internal.Prim haddock Haddock used to parse Haskell source to generate documentation, but switched to using interface files instead. This broke documentation of the GHC.Internal.Prim module, since it's a wired-in interface that didn't provide a document structure. This patch adds the missing document structure and updates genprimopcode to make the section headers and descriptions available. fixes #26954 - - - - - f87e5e57 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Remove obsolete --make-haskell-source from genprimopcode Now that haddock uses the wired-in interface for GHC.Internal.Prim, the generated Haskell source file is no longer needed. Remove the --make-haskell-source code generator from genprimopcode and replace the generated GHC/Internal/Prim.hs with a minimal static source file. - - - - - 4a7ddc7b by Sylvain Henry at 2026-03-07T05:04:59-05:00 JS: fix linking of exposed but non-preload units (#24886) Units exposed in the unit database but not explicitly passed on the command-line were not considered by the JS linker. This isn't an issue for cabal which passes every unit explicitly but it is an issue when using GHC directly (cf T24886 test). - - - - - 689aafcd by mangoiv at 2026-03-07T05:05:52-05:00 testsuite: double foundation timeout multiplier The runtime timeout in the foundation test was regularly hit by code generated by the wasm backend - we increase the timout since the high runtime is expected on the wasm backend for this rather complex test. Resolves #26938 - - - - - a46a1bb1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: add myCapabilityExpr to GHC.Cmm.Utils This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is computed from `BaseReg`. It's convenient for codegen logic where one needs to pass the current Capability's pointer. - - - - - 4afc65b1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: lower tryPutMVar# into a ccall directly This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it completely and making the compiler lower `tryPutMVar#` into a ccall to `performTryPutMVar` directly, without landing into an intermediate C or Cmm function. `performTryPutMVar` is promoted to a public RTS function with default visibility, and the compiler lowering logic takes into account the C ABI of `performTryPutMVar` and converts from C Bool to primop's `Int#` result properly. - - - - - 9e3d6a58 by Simon Hengel at 2026-03-09T04:51:15-04:00 Don't use #line in haddocks This confuses the parser. Haddock output is unaffected by this change. (read: this still produces the same documentation) - - - - - f4e8fec2 by Wolfgang Jeltsch at 2026-03-09T04:52:01-04:00 Remove in-package dependencies on `GHC.Internal.System.IO` This contribution eliminates all dependencies on `GHC.Internal.System.IO` from within `ghc-internal`. It comprises the following changes: * Make `GHC.Internal.Fingerprint` independent of I/O support * Tighten the dependencies of `GHC.Internal.Data.Version` * Tighten the dependencies of `GHC.Internal.TH.Monad` * Tighten the dependencies of `GHCi.Helpers` * Move some code that needs `System.IO` to `template-haskell` * Move the `GHC.ResponseFile` implementation into `base` * Move the `System.Exit` implementation into `base` * Move the `System.IO.OS` implementation into `base` Metric Decrease: size_hello_artifact size_hello_artifact_gzip size_hello_unicode size_hello_unicode_gzip - - - - - 91df4c82 by Sylvain Henry at 2026-03-09T04:53:20-04:00 T18832: fix Windows CI failure by dropping removeDirectoryRecursive On Windows, open file handles prevent deletion. After killThread, the closer thread may not have called hClose yet, causing removeDirectoryRecursive to fail with "permission denied". The test harness cleans up the run directory anyway, so the call is redundant. - - - - - d7fe9671 by Cheng Shao at 2026-03-09T04:54:04-04:00 compiler: fix redundant import in GHC.StgToJS.Object This patch fixes a redundant import in GHC.StgToJS.Object that causes a build failure when compiling head from 9.14 with validate flavours. Fixes #26991. - - - - - 0bfd29c3 by Cheng Shao at 2026-03-09T04:54:46-04:00 wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports This patch fixes a wasm ghci error when loading modules with JSFFI exports; the `backendValidityOfCExport` check in `tcCheckFEType` should only makes sense and should be performed when not checking the JavaScript calling convention; otherwise, when the calling convention is JavaScript, the codegen logic should be trusted to backends that actually make use of it. Fixes #26998. - - - - - e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00 Apply NOINLINE pragmas to generated Typeable bindings For context, see the existing Note [Grand plan for Typeable] and the Note [NOINLINE on generated Typeable bindings] added in the subsequent commit. This is about reducing the number of exported top level names and unfoldings, which reduces interface file sizes and reduces the number of global/dynamic linker symbols. Also accept the changed test output and metric decreases. Tests that record the phase output for type checking or for simplifier end up with different output: the generated bindings now have an Inline [~] annotation, and many top level names are now local rather than module-prefixed for export. Also accept the numerous metric decreases in compile_time/bytes allocated, and a few in compile_time/max_bytes_used. There's also one instance of a decrease in runtime/max_bytes_used but it's a ghci-way test and so presumably the reason is that it loads smaller .hi files and/or links fewer symbols. ------------------------- Metric Decrease: CoOpt_Singletons MultiLayerModulesTH_OneShot MultilineStringsPerf T10421 T10547 T12150 T12227 T12234 T12425 T13035 T13056 T13253 T13253-spj T15304 T15703 T16875 T17836b T17977b T18140 T18223 T18282 T18304 T18698a T18698b T18730 T18923 T20049 T21839c T24471 T24582 T24984 T3064 T4029 T5030 T5642 T5837 T6048 T9020 T9198 T9961 TcPlugin_RewritePerf WWRec hard_hole_fits mhu-perf ------------------------- - - - - - 67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Add documentation Note [NOINLINE on generated Typeable bindings] and refer to it from the code and existing documentation. - - - - - c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Switch existing note to "named wrinkle" style, (GPT1)..(GPT7) GPT = Grand plan for Typeable - - - - - dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00 ci: only build deb13 for validate pipeline aarch64-linux jobs This patch drops the redundant aarch64-linux deb12 job from validate pipelines and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004. - - - - - 78c525c6 by Simon Peyton Jones at 2026-03-09T22:02:45+00:00 Beef up Core Lint to check for shadowing - - - - - ec5c0a0a by Simon Peyton Jones at 2026-03-09T22:02:45+00:00 comments only [skip ci] - - - - - aef4597f by Simon Peyton Jones at 2026-03-09T22:02:45+00:00 Refactor free-variable finding Removes duplication, hopefully improves efficiency - - - - - 3e2fa885 by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibbles - - - - - d2f600f3 by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibbles - - - - - f34bb55a by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibbles - - - - - ae7a6208 by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Major refactor of free-variable functions For some time we have had two free-variable mechanims for types: * The "FV" mechanism, embodied in GHC.Utils.FV, which worked OK, but was fragile where eta-expansion was concerned. * The TyCoFolder mechanism, using a one-shot EndoOS accumulator I finally got tired of this and refactored the whole thing. Now we have * GHC.Types.Var.FV, which has a composable free-variable result type, very much in the spirit of the old `FV`, but much more robust. (It uses the "one shot trick".) * GHC.Core.TyCo.FVs now has just one technology for free variables. All this led to a lot of renaming. - - - - - 217eb39d by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Add missing file! - - - - - 103978b7 by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibble order of kind variables - - - - - d884373b by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibble error messages - - - - - 1fab029b by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibble error messages again - - - - - 589bacfd by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibble merge with HEAD - - - - - 15008353 by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Wibbles [skip ci] - - - - - 0389efcf by Simon Peyton Jones at 2026-03-09T22:02:46+00:00 Quick fixes after talking with Richard [skip ci] Needs fixups - - - - - 6388aa24 by Simon Peyton Jones at 2026-03-09T23:54:49+00:00 More fixes, applying (NoTypeShadowing) consistently - - - - - 437 changed files: - .gitlab-ci.yml - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py - .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - compiler/GHC/Builtin/Names.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/Types.hs - compiler/GHC/Builtin/Utils.hs - compiler/GHC/Builtin/primops.txt.pp - compiler/GHC/ByteCode/Serialize.hs - compiler/GHC/Cmm/MachOp.hs - compiler/GHC/Cmm/Node.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.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/CodeGen.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/FVs.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/DmdAnal.hs - compiler/GHC/Core/Opt/FloatIn.hs - compiler/GHC/Core/Opt/FloatOut.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/SetLevels.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Predicate.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/SimpleOpt.hs - compiler/GHC/Core/Subst.hs - compiler/GHC/Core/TyCo/FVs.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Core/TyCo/Subst.hs - compiler/GHC/Core/Type.hs - compiler/GHC/Core/Unify.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Driver/Config/Core/Lint.hs - compiler/GHC/Driver/Config/Interpreter.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Pat.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/Hs/Type.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Errors/Ppr.hs - compiler/GHC/HsToCore/Errors/Types.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - 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+ testsuite/tests/warnings/should_compile/SpecMultipleTysMono.stderr - testsuite/tests/warnings/should_compile/all.T - utils/check-exact/ExactPrint.hs - utils/genprimopcode/Main.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs - utils/haddock/haddock-api/src/Haddock/Convert.hs - utils/haddock/haddock-api/src/Haddock/GhcUtils.hs - utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs - utils/haddock/haddock-api/src/Haddock/Types.hs - utils/jsffi/dyld.mjs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bdaba64233d519efd628c229b97766… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bdaba64233d519efd628c229b97766… You're receiving this email because of your account on gitlab.haskell.org.

1 0

[Git][ghc/ghc] Pushed new branch wip/hadrian-prof-dynamic-too
by Cheng Shao (＠TerrorJack) 09 Mar '26

09 Mar '26

Cheng Shao pushed new branch wip/hadrian-prof-dynamic-too at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/hadrian-prof-dynamic-too You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-apporv-Oct24] 44 commits: Check for negative type literals in the type checker (#26861)
by Apoorv Ingle (＠ani) 09 Mar '26

09 Mar '26

Apoorv Ingle pushed to branch wip/spj-apporv-Oct24 at Glasgow Haskell Compiler / GHC Commits: bd3eba86 by Vladislav Zavialov at 2026-02-27T05:48:01-05:00 Check for negative type literals in the type checker (#26861) GHC disallows negative type literals (e.g., -1), as tested by T8306 and T8412. This check is currently performed in the renamer: rnHsTyLit tyLit@(HsNumTy x i) = do when (i < 0) $ addErr $ TcRnNegativeNumTypeLiteral tyLit However, this check can be bypassed using RequiredTypeArguments (see the new test case T26861). Prior to this patch, such programs caused the compiler to hang instead of reporting a proper error. This patch addresses the issue by adding an equivalent check in the type checker, namely in tcHsType. The diff is deliberately minimal to facilitate backporting. A more comprehensive rework of HsTyLit is planned for a separate commit. - - - - - faf14e0c by Vladislav Zavialov at 2026-02-27T05:48:45-05:00 Consistent pretty-printing of HsString, HsIsString, HsStrTy Factor out a helper to pretty-print string literals, thus fixing newline handling for overloaded string literals and type literals. Test cases: T26860ppr T26860ppr_overloaded T26860ppr_tylit Follow up to ddf1434ff9bb08cfef3c93f23de6b83ec698aa27 - - - - - f108a972 by Arnaud Spiwack at 2026-02-27T12:53:01-05:00 Make list comprehension completely non-linear Fixes #25081 From the note: The usefulness of list comprehension in conjunction with linear types is dubious. After all, statements are made to be run many times, for instance in ```haskell [u | y <- [0,1], stmts] ``` both `u` and `stmts` are going to be run several times. In principle, though, there are some position in a monad comprehension expression which could be considered linear. We could try and make it so that these positions are considered linear by the typechecker, but in practice the desugarer doesn't take enough care to ensure that these are indeed desugared to linear sites. We tried in the past, and it turned out that we'd miss a desugaring corner case (#25772). Until there's a demand for this very specific improvement, let's instead be conservative, and consider list comprehension to be completely non-linear. - - - - - ae799cab by Simon Jakobi at 2026-02-27T12:53:54-05:00 PmAltConSet: Use Data.Set instead of Data.Map ...to store `PmLit`s. The Map was only used to map keys to themselves. Changing the Map to a Set saves a Word of memory per entry. Resolves #26756. - - - - - dcd7819c by Vladislav Zavialov at 2026-02-27T18:46:03-05:00 Drop HsTyLit in favor of HsLit (#26862, #25121) This patch is a small step towards unification of HsExpr and HsType, taking care of literals (HsLit) and type literals (HsTyLit). Additionally, it improves error messages for unsupported type literals, such as unboxed or fractional literals (test cases: T26862, T26862_th). Changes to the AST: * Use HsLit where HsTyLit was previously used * Use HsChar where HsCharTy was previously used * Use HsString where HsStrTy was previously used * Use HsNatural (NEW) where HsNumTy was previously used * Use HsDouble (NEW) to represent unsupported fractional type literals Changes to logic: * Parse unboxed and fractional type literals (to be rejected later) * Drop the check for negative literals in the renamer (rnHsTyLit) in favor of checking in the type checker (tc_hs_lit_ty) * Check for invalid type literals in TH (repTyLit) and report unrepresentable literals with ThUnsupportedTyLit * Allow negative type literals in TH (numTyLit). This is fine as these will be taken care of at splice time (test case: T8306_th) - - - - - c927954f by Vladislav Zavialov at 2026-02-27T18:46:50-05:00 Increase test coverage of diagnostics Add test cases for the previously untested diagnostics: [GHC-01239] PsErrIfInFunAppExpr [GHC-04807] PsErrProcInFunAppExpr [GHC-08195] PsErrInvalidRecordCon [GHC-16863] PsErrUnsupportedBoxedSumPat [GHC-18910] PsErrSemiColonsInCondCmd [GHC-24737] PsErrInvalidWhereBindInPatSynDecl [GHC-25037] PsErrCaseInFunAppExpr [GHC-25078] PsErrPrecedenceOutOfRange [GHC-28021] PsErrRecordSyntaxInPatSynDecl [GHC-35827] TcRnNonOverloadedSpecialisePragma [GHC-40845] PsErrUnpackDataCon [GHC-45106] PsErrInvalidInfixHole [GHC-50396] PsErrInvalidRuleActivationMarker [GHC-63930] MultiWayIfWithoutAlts [GHC-65536] PsErrNoSingleWhereBindInPatSynDecl [GHC-67630] PsErrMDoInFunAppExpr [GHC-70526] PsErrLetCmdInFunAppCmd [GHC-77808] PsErrDoCmdInFunAppCmd [GHC-86934] ClassPE [GHC-90355] PsErrLetInFunAppExpr [GHC-91745] CasesExprWithoutAlts [GHC-92971] PsErrCaseCmdInFunAppCmd [GHC-95644] PsErrBangPatWithoutSpace [GHC-97005] PsErrIfCmdInFunAppCmd Remove unused error constructors: [GHC-44524] PsErrExpectedHyphen [GHC-91382] TcRnIllegalKindSignature - - - - - 3a9470fd by Torsten Schmits at 2026-02-27T18:47:34-05:00 Avoid expensive computation for debug logging in `mergeDatabases` when log level is low This computed and traversed a set intersection for every single dependency unconditionally. - - - - - ea4c2cbd by Brandon Chinn at 2026-02-27T16:22:38-08:00 Implement QualifiedStrings (#26503) See Note [Implementation of QualifiedStrings] - - - - - 08bc245b by sheaf at 2026-03-01T11:11:54-05:00 Clean up join points, casts & ticks This commit shores up the logic dealing with casts and ticks occurring in between a join point binding and a jump. Fixes #26642 #26929 #26693 Makes progress on #14610 #26157 #26422 Changes: - Remove 'GHC.Types.Tickish.TickishScoping' in favour of simpler predicates 'tickishHasNoScope'/'tickishHasSoftScope', as things were before commit 993975d3. This makes the code easier to read and document (fewer indirections). - Introduce 'canCollectArgsThroughTick' for consistent handling of ticks around PrimOps and other 'Id's that cannot be eta-reduced. See overhauled Note [Ticks and mandatory eta expansion]. - New Note [JoinId vs TailCallInfo] in GHC.Core.SimpleOpt that explains robustness of JoinId vs fragility of TailCallInfo. - Allow casts/non-soft-scoped ticks to occur in between a join point binder and a jump, but only in Core Prep. See Note [Join points, casts, and ticks] and Note [Join points, casts, and ticks... in Core Prep] in GHC.Core.Opt.Simplify.Iteration. Also update Core Lint to account for this. See Note [Linting join points with casts or ticks] in GHC.Core.Lint. - Update 'GHC.Core.Utils.mergeCaseAlts' to avoid pushing a cast in between a join point binding and its jumps. This fixes #26642. See the new (MC5) and (MC6) in Note [Merge Nested Cases]. - Update float out to properly handle source note ticks. They are now properly floated out instead of being discarded. This increases the number of ticks in certain tests with -g. Test cases: T26642 and TrickyJoins. Metric increase due to more source note ticks with -g: ------------------------- Metric Increase: libdir size_hello_artifact size_hello_unicode ------------------------- - - - - - 476c4cdf by Sean D. Gillespie at 2026-03-02T10:14:37-05:00 Add SIMD absolute value on x86 and LLVM On x86, absolute value of 32 bits or less is implemented with PABSB/PABSW/PABSD if SSSE3 is available. Otherwise, there is a fallback for SSE2. For 64 bit integers it uses VPABSQ, required by AVX-512VL, with fallbacks for SSE4.2 and SSE2. There is no dedicated instruction for floating point absolute value on x86, so it is simulated using bitwise AND. Absolute value for signed integers and floats are implemented by the "llvm.abs/llvm.fabs" standard library intrinsics. This implementation uses MachOps constructors, unlike non-vector floating point absolute value, which uses CallishMachOps. - - - - - 709448c0 by Sean D. Gillespie at 2026-03-02T10:14:46-05:00 Add SIMD floating point square root On x86, this is implemented with the SQRTPS and SQRTPD instructions. On LLVM, it uses the sqrt library intrinstic. - - - - - 0deadf66 by Sean D. Gillespie at 2026-03-02T10:14:47-05:00 Improve error message for SIMD on aarch64 When encountering vector literals on aarch64, previously it would throw: <no location info>: error: panic! (the 'impossible' happened) GHC version 9.15.20251219: getRegister' (CmmLit:CmmVec): Now it is more consistent with the other vector operations: <no location info>: error: sorry! (unimplemented feature or known bug) GHC version 9.15.20251219: SIMD operations on AArch64 currently require the LLVM backend - - - - - 7d64031b by Vladislav Zavialov at 2026-03-03T11:09:28-05:00 Replace maybeAddSpace with spaceIfSingleQuote Simplify pretty-printing of HsTypes by using spaceIfSingleQuote. This allows us to drop the unwieldy lhsTypeHasLeadingPromotionQuote helper function. Follow-up to 178c1fd830c78377ef5d338406a41e1d8eb5f0da - - - - - 598db847 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Correct `hIsReadable` and `hIsWritable` for duplex handles This contribution implements CLC proposal #371. It changes `hIsReadable` and `hIsWritable` such that they always throw a respective exception when encountering a closed or semi-closed handle, not just in the case of a file handle. - - - - - b90201e5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Document `SemiClosedHandle` - - - - - c9df72b5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Tell users what “semi-closed” means for duplex handles - - - - - a8aa1868 by Ilias Tsitsimpis at 2026-03-06T06:26:29-05:00 Fix determinism of linker arguments The switch from Data.Map to UniqMap in 3b5be05ac29 introduced non-determinism in the order of packages passed to the linker. This resulted in non-reproducible builds where the DT_NEEDED entries in dynamic libraries were ordered differently across builds. Fix the regression by explicitly sorting the package list derived from UniqMap. Fixes #26838 - - - - - 9b64ad3a by Matthew Pickering at 2026-03-06T06:27:16-05:00 determinism: Use a deterministic renaming when writing bytecode files Now when writing the bytecode file, a counter and substitution are used to provide deterministic keys to local variables (rather than relying on uniques). This change ensures that `.gbc` are produced deterministically. Fixes #26499 - - - - - d29800e0 by Teo Camarasu at 2026-03-06T06:28:46-05:00 ghc-internal: delete Version hs-boot loop Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module. Resolves #26940 - - - - - ad25af90 by Sylvain Henry at 2026-03-06T06:30:33-05:00 Linker: implement support for COMMON symbols (#6107) Add some support for COMMON symbols. We don't support common symbols having different sizes where the larger one is allocated after the smaller one. The linker will fail with an appropriate error message if it happens. - - - - - 3b59f158 by Cheng Shao at 2026-03-06T06:31:16-05:00 compiler: fix redundant import of GHC.Hs.Lit This patch removes a redundant import of `GHC.Hs.Lit` which causes a ghc build failure with validate flavours when bootstrapping from 9.14. Fixes #26972. - - - - - 148d36f3 by Cheng Shao at 2026-03-06T06:32:01-05:00 compiler: avoid unneeded traversals in GHC.Unit.State Following !15591, this patch avoids unneeded traversals in `reportCycles`/`reportUnusable` when log verbosity is below given threshold. Also applies `logVerbAtLeast` when appropriate. Co-authored-by: Codex <codex(a)openai.com> - - - - - 7e31367c by Cheng Shao at 2026-03-06T06:32:46-05:00 ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool This patch fixes redundant import in `GHC.Internal.Event.Windows.ManagedThreadPool` that causes a compilation error when building windows target with validate flavours and bootstrapping from 9.14. Fixes #26976. - - - - - fc8b8e27 by sheaf at 2026-03-06T06:33:28-05:00 System.Info.fullCompilerVersion: add 'since' annot Fixes #26973 - - - - - c8238375 by Sylvain Henry at 2026-03-06T06:34:23-05:00 Hadrian: deprecate --bignum and automatically enable +native_bignum for JS Deprecate --bignum=... to select the bignum backend. It's only used to select the native backend, and this can be done with the +native_bignum flavour transformer. Additionally, we automatically enable +native_bignum for the JS target because the GMP backend isn't supported. - - - - - a3ac7074 by Sylvain Henry at 2026-03-06T06:35:17-05:00 JS: fix putEnum/fromEnum (#24593) Don't go through Word16 when serializing Enums. - - - - - 0b36e96c by Andreas Klebinger at 2026-03-06T06:35:58-05:00 Docs: Document -fworker-wrapper-cbv default setting. Fixes #26841 - - - - - eca445e7 by mangoiv at 2026-03-07T05:02:36-05:00 drop deb9/10 from CI, add deb13 debian 9 and 10 are end of life, hence we drop them from our CI, but we do add debian 13. Jobs that were previously run on 9 and 10 run on 13, too, jobs that were run on 10, are run on 11 now. Jobs that were previously run on debian 12 are run on debian 13 now. This MR also updates hadrian's bootstrap plans for that reason. Metric Decrease: T9872d - - - - - 12f8b829 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Fix GHC.Internal.Prim haddock Haddock used to parse Haskell source to generate documentation, but switched to using interface files instead. This broke documentation of the GHC.Internal.Prim module, since it's a wired-in interface that didn't provide a document structure. This patch adds the missing document structure and updates genprimopcode to make the section headers and descriptions available. fixes #26954 - - - - - f87e5e57 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Remove obsolete --make-haskell-source from genprimopcode Now that haddock uses the wired-in interface for GHC.Internal.Prim, the generated Haskell source file is no longer needed. Remove the --make-haskell-source code generator from genprimopcode and replace the generated GHC/Internal/Prim.hs with a minimal static source file. - - - - - 4a7ddc7b by Sylvain Henry at 2026-03-07T05:04:59-05:00 JS: fix linking of exposed but non-preload units (#24886) Units exposed in the unit database but not explicitly passed on the command-line were not considered by the JS linker. This isn't an issue for cabal which passes every unit explicitly but it is an issue when using GHC directly (cf T24886 test). - - - - - 689aafcd by mangoiv at 2026-03-07T05:05:52-05:00 testsuite: double foundation timeout multiplier The runtime timeout in the foundation test was regularly hit by code generated by the wasm backend - we increase the timout since the high runtime is expected on the wasm backend for this rather complex test. Resolves #26938 - - - - - a46a1bb1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: add myCapabilityExpr to GHC.Cmm.Utils This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is computed from `BaseReg`. It's convenient for codegen logic where one needs to pass the current Capability's pointer. - - - - - 4afc65b1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: lower tryPutMVar# into a ccall directly This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it completely and making the compiler lower `tryPutMVar#` into a ccall to `performTryPutMVar` directly, without landing into an intermediate C or Cmm function. `performTryPutMVar` is promoted to a public RTS function with default visibility, and the compiler lowering logic takes into account the C ABI of `performTryPutMVar` and converts from C Bool to primop's `Int#` result properly. - - - - - 9e3d6a58 by Simon Hengel at 2026-03-09T04:51:15-04:00 Don't use #line in haddocks This confuses the parser. Haddock output is unaffected by this change. (read: this still produces the same documentation) - - - - - f4e8fec2 by Wolfgang Jeltsch at 2026-03-09T04:52:01-04:00 Remove in-package dependencies on `GHC.Internal.System.IO` This contribution eliminates all dependencies on `GHC.Internal.System.IO` from within `ghc-internal`. It comprises the following changes: * Make `GHC.Internal.Fingerprint` independent of I/O support * Tighten the dependencies of `GHC.Internal.Data.Version` * Tighten the dependencies of `GHC.Internal.TH.Monad` * Tighten the dependencies of `GHCi.Helpers` * Move some code that needs `System.IO` to `template-haskell` * Move the `GHC.ResponseFile` implementation into `base` * Move the `System.Exit` implementation into `base` * Move the `System.IO.OS` implementation into `base` Metric Decrease: size_hello_artifact size_hello_artifact_gzip size_hello_unicode size_hello_unicode_gzip - - - - - 91df4c82 by Sylvain Henry at 2026-03-09T04:53:20-04:00 T18832: fix Windows CI failure by dropping removeDirectoryRecursive On Windows, open file handles prevent deletion. After killThread, the closer thread may not have called hClose yet, causing removeDirectoryRecursive to fail with "permission denied". The test harness cleans up the run directory anyway, so the call is redundant. - - - - - d7fe9671 by Cheng Shao at 2026-03-09T04:54:04-04:00 compiler: fix redundant import in GHC.StgToJS.Object This patch fixes a redundant import in GHC.StgToJS.Object that causes a build failure when compiling head from 9.14 with validate flavours. Fixes #26991. - - - - - 0bfd29c3 by Cheng Shao at 2026-03-09T04:54:46-04:00 wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports This patch fixes a wasm ghci error when loading modules with JSFFI exports; the `backendValidityOfCExport` check in `tcCheckFEType` should only makes sense and should be performed when not checking the JavaScript calling convention; otherwise, when the calling convention is JavaScript, the codegen logic should be trusted to backends that actually make use of it. Fixes #26998. - - - - - e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00 Apply NOINLINE pragmas to generated Typeable bindings For context, see the existing Note [Grand plan for Typeable] and the Note [NOINLINE on generated Typeable bindings] added in the subsequent commit. This is about reducing the number of exported top level names and unfoldings, which reduces interface file sizes and reduces the number of global/dynamic linker symbols. Also accept the changed test output and metric decreases. Tests that record the phase output for type checking or for simplifier end up with different output: the generated bindings now have an Inline [~] annotation, and many top level names are now local rather than module-prefixed for export. Also accept the numerous metric decreases in compile_time/bytes allocated, and a few in compile_time/max_bytes_used. There's also one instance of a decrease in runtime/max_bytes_used but it's a ghci-way test and so presumably the reason is that it loads smaller .hi files and/or links fewer symbols. ------------------------- Metric Decrease: CoOpt_Singletons MultiLayerModulesTH_OneShot MultilineStringsPerf T10421 T10547 T12150 T12227 T12234 T12425 T13035 T13056 T13253 T13253-spj T15304 T15703 T16875 T17836b T17977b T18140 T18223 T18282 T18304 T18698a T18698b T18730 T18923 T20049 T21839c T24471 T24582 T24984 T3064 T4029 T5030 T5642 T5837 T6048 T9020 T9198 T9961 TcPlugin_RewritePerf WWRec hard_hole_fits mhu-perf ------------------------- - - - - - 67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Add documentation Note [NOINLINE on generated Typeable bindings] and refer to it from the code and existing documentation. - - - - - c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Switch existing note to "named wrinkle" style, (GPT1)..(GPT7) GPT = Grand plan for Typeable - - - - - dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00 ci: only build deb13 for validate pipeline aarch64-linux jobs This patch drops the redundant aarch64-linux deb12 job from validate pipelines and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004. - - - - - 505b57cf by Apoorv Ingle at 2026-03-09T16:27:08-05:00 Work for #25001 Notes added [Error Context Stack] [Typechecking by expansion: overview] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- * Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` * Kills `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`. * Kills the function `addHeadCtxt` as it is now mearly setting a location * The function `tcValArgs` does its own argument number management * Makes `splitHsApps` not look through `XExpr` * `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` * Removes location information from `OrigPat` payload * Removes special case of tcBody from `tcLambdaMatches` * Removes special case of `dsExpr` for `ExpandedThingTc` * Rename `HsThingRn` to `SrcCodeCtxt` * Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` * Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` * Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression * Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax * Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` * Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` * Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` * kill `PopErrCtxt` from `XXExprGhcRn` * simplify `addArgCtxt` and push `setSrcSpan` inside `addLExprCtxt`. Make sure addExprCtxt is not called by itself * fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) * rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location * fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg * Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack * `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals * Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes * wrap `fromListN` with a generated src span with GeneratedSrcSpanDetails field to store the original srcspan * remove `UnhelpfulGenerated` from `UnhelpfulSpanReason` and into new datatype `GeneratedSrcSpanDetails` - - - - - 401 changed files: - .gitlab-ci.yml - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py - .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - compiler/GHC.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/Types.hs - compiler/GHC/Builtin/Utils.hs - compiler/GHC/Builtin/primops.txt.pp - compiler/GHC/ByteCode/Serialize.hs - compiler/GHC/Cmm/MachOp.hs - compiler/GHC/Cmm/Node.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.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/CodeGen.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/FloatIn.hs - compiler/GHC/Core/Opt/FloatOut.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/SimpleOpt.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Driver/Config/Core/Lint.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Pat.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/Hs/Type.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Errors/Ppr.hs - compiler/GHC/HsToCore/Errors/Types.hs - compiler/GHC/HsToCore/Expr.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/Desugar.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Errors/Ppr.hs - compiler/GHC/Parser/Errors/Types.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Parser/String.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - + compiler/GHC/Rename/Lit.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/Runtime/Interpreter/JS.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Object.hs - compiler/GHC/StgToJS/Prim.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - + compiler/GHC/Tc/Gen/App.hs-boot - compiler/GHC/Tc/Gen/Do.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/Splice.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Instance/Typeable.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Basic.hs - compiler/GHC/Types/Error.hs - compiler/GHC/Types/Error/Codes.hs - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Id/Info.hs - 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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/970c225a015b5fc24e89d748a1ff2c… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/970c225a015b5fc24e89d748a1ff2c… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/kill-SrcCodeOrigin] 19 commits: compiler: add myCapabilityExpr to GHC.Cmm.Utils
by Apoorv Ingle (＠ani) 09 Mar '26

09 Mar '26

Apoorv Ingle pushed to branch wip/ani/kill-SrcCodeOrigin at Glasgow Haskell Compiler / GHC Commits: a46a1bb1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: add myCapabilityExpr to GHC.Cmm.Utils This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is computed from `BaseReg`. It's convenient for codegen logic where one needs to pass the current Capability's pointer. - - - - - 4afc65b1 by Cheng Shao at 2026-03-09T04:50:30-04:00 compiler: lower tryPutMVar# into a ccall directly This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it completely and making the compiler lower `tryPutMVar#` into a ccall to `performTryPutMVar` directly, without landing into an intermediate C or Cmm function. `performTryPutMVar` is promoted to a public RTS function with default visibility, and the compiler lowering logic takes into account the C ABI of `performTryPutMVar` and converts from C Bool to primop's `Int#` result properly. - - - - - 9e3d6a58 by Simon Hengel at 2026-03-09T04:51:15-04:00 Don't use #line in haddocks This confuses the parser. Haddock output is unaffected by this change. (read: this still produces the same documentation) - - - - - f4e8fec2 by Wolfgang Jeltsch at 2026-03-09T04:52:01-04:00 Remove in-package dependencies on `GHC.Internal.System.IO` This contribution eliminates all dependencies on `GHC.Internal.System.IO` from within `ghc-internal`. It comprises the following changes: * Make `GHC.Internal.Fingerprint` independent of I/O support * Tighten the dependencies of `GHC.Internal.Data.Version` * Tighten the dependencies of `GHC.Internal.TH.Monad` * Tighten the dependencies of `GHCi.Helpers` * Move some code that needs `System.IO` to `template-haskell` * Move the `GHC.ResponseFile` implementation into `base` * Move the `System.Exit` implementation into `base` * Move the `System.IO.OS` implementation into `base` Metric Decrease: size_hello_artifact size_hello_artifact_gzip size_hello_unicode size_hello_unicode_gzip - - - - - 91df4c82 by Sylvain Henry at 2026-03-09T04:53:20-04:00 T18832: fix Windows CI failure by dropping removeDirectoryRecursive On Windows, open file handles prevent deletion. After killThread, the closer thread may not have called hClose yet, causing removeDirectoryRecursive to fail with "permission denied". The test harness cleans up the run directory anyway, so the call is redundant. - - - - - d7fe9671 by Cheng Shao at 2026-03-09T04:54:04-04:00 compiler: fix redundant import in GHC.StgToJS.Object This patch fixes a redundant import in GHC.StgToJS.Object that causes a build failure when compiling head from 9.14 with validate flavours. Fixes #26991. - - - - - 0bfd29c3 by Cheng Shao at 2026-03-09T04:54:46-04:00 wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports This patch fixes a wasm ghci error when loading modules with JSFFI exports; the `backendValidityOfCExport` check in `tcCheckFEType` should only makes sense and should be performed when not checking the JavaScript calling convention; otherwise, when the calling convention is JavaScript, the codegen logic should be trusted to backends that actually make use of it. Fixes #26998. - - - - - e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00 Apply NOINLINE pragmas to generated Typeable bindings For context, see the existing Note [Grand plan for Typeable] and the Note [NOINLINE on generated Typeable bindings] added in the subsequent commit. This is about reducing the number of exported top level names and unfoldings, which reduces interface file sizes and reduces the number of global/dynamic linker symbols. Also accept the changed test output and metric decreases. Tests that record the phase output for type checking or for simplifier end up with different output: the generated bindings now have an Inline [~] annotation, and many top level names are now local rather than module-prefixed for export. Also accept the numerous metric decreases in compile_time/bytes allocated, and a few in compile_time/max_bytes_used. There's also one instance of a decrease in runtime/max_bytes_used but it's a ghci-way test and so presumably the reason is that it loads smaller .hi files and/or links fewer symbols. ------------------------- Metric Decrease: CoOpt_Singletons MultiLayerModulesTH_OneShot MultilineStringsPerf T10421 T10547 T12150 T12227 T12234 T12425 T13035 T13056 T13253 T13253-spj T15304 T15703 T16875 T17836b T17977b T18140 T18223 T18282 T18304 T18698a T18698b T18730 T18923 T20049 T21839c T24471 T24582 T24984 T3064 T4029 T5030 T5642 T5837 T6048 T9020 T9198 T9961 TcPlugin_RewritePerf WWRec hard_hole_fits mhu-perf ------------------------- - - - - - 67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Add documentation Note [NOINLINE on generated Typeable bindings] and refer to it from the code and existing documentation. - - - - - c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Switch existing note to "named wrinkle" style, (GPT1)..(GPT7) GPT = Grand plan for Typeable - - - - - dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00 ci: only build deb13 for validate pipeline aarch64-linux jobs This patch drops the redundant aarch64-linux deb12 job from validate pipelines and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004. - - - - - 505b57cf by Apoorv Ingle at 2026-03-09T16:27:08-05:00 Work for #25001 Notes added [Error Context Stack] [Typechecking by expansion: overview] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- * Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` * Kills `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`. * Kills the function `addHeadCtxt` as it is now mearly setting a location * The function `tcValArgs` does its own argument number management * Makes `splitHsApps` not look through `XExpr` * `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` * Removes location information from `OrigPat` payload * Removes special case of tcBody from `tcLambdaMatches` * Removes special case of `dsExpr` for `ExpandedThingTc` * Rename `HsThingRn` to `SrcCodeCtxt` * Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` * Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` * Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression * Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax * Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` * Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` * Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` * kill `PopErrCtxt` from `XXExprGhcRn` * simplify `addArgCtxt` and push `setSrcSpan` inside `addLExprCtxt`. Make sure addExprCtxt is not called by itself * fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) * rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location * fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg * Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack * `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals * Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes * wrap `fromListN` with a generated src span with GeneratedSrcSpanDetails field to store the original srcspan * remove `UnhelpfulGenerated` from `UnhelpfulSpanReason` and into new datatype `GeneratedSrcSpanDetails` - - - - - faaeb7b9 by Apoorv Ingle at 2026-03-09T16:27:37-05:00 trying to remove SrcCodeOrigin - - - - - c675c814 by Simon Peyton Jones at 2026-03-09T16:27:38-05:00 Improvements in ErrCtxt - - - - - af429f43 by Apoorv Ingle at 2026-03-09T16:27:39-05:00 ErrCtxtMsg to CtOrigin - - - - - 1ff61903 by Apoorv Ingle at 2026-03-09T16:27:39-05:00 remove CtOrigin.ExpansionOrigin in favour of errCtxtCtOrigin, remove CtOrign from ErrMsgCtxt.FunTysCtxt - - - - - ba2b691f by Apoorv Ingle at 2026-03-09T16:27:39-05:00 trying out ErrCtxtMsg zonking - - - - - 8f52b02f by Apoorv Ingle at 2026-03-09T16:27:40-05:00 route the correct ExpectedFunTyCtxt SDoc. Add missing RecordUpdCtxt to errCtxtCtOrigin - - - - - f921f0d3 by Apoorv Ingle at 2026-03-09T16:27:40-05:00 print the correct exprs for warnings for do discards - - - - - 164 changed files: - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Expr.hs-boot - compiler/GHC/Hs/Instances.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Object.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - + compiler/GHC/Tc/Gen/App.hs-boot - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Do.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/Match.hs-boot - 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/Typeable.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Class.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Types/BasicTypes.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/Origin.hs-boot - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcType.hs-boot - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Validity.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/Types/Error.hs - + compiler/GHC/Types/Error.hs-boot - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/SrcLoc.hs - + compiler/GHC/Unit/State.hs-boot - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Logger.hs - ghc/GHCi/UI.hs - ghc/GHCi/UI/Info.hs - libraries/base/src/GHC/Fingerprint.hs - libraries/base/src/GHC/ResponseFile.hs - libraries/base/src/System/Exit.hs - libraries/base/src/System/IO/OS.hs - libraries/base/tests/IO/T18832.hs - libraries/ghc-heap/GHC/Exts/Heap/Closures.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs - libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs - − libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs - − libraries/ghc-internal/src/GHC/Internal/System/Exit.hs - − libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - libraries/template-haskell/Language/Haskell/TH/Syntax.hs - rts/PrimOps.cmm - rts/RtsSymbols.c - rts/Threads.c - rts/Threads.h - rts/include/rts/Threads.h - rts/include/stg/MiscClosures.h - testsuite/tests/deSugar/should_compile/T16615.stderr - testsuite/tests/deSugar/should_compile/T2431.stderr - testsuite/tests/dmdanal/should_compile/T16029.stdout - testsuite/tests/ffi/should_compile/all.T - + testsuite/tests/ghci-wasm/T26998.hs - testsuite/tests/ghci-wasm/all.T - testsuite/tests/indexed-types/should_fail/T2693.stderr - testsuite/tests/indexed-types/should_fail/T5439.stderr - testsuite/tests/numeric/should_compile/T14170.stdout - testsuite/tests/numeric/should_compile/T14465.stdout - testsuite/tests/numeric/should_compile/T7116.stdout - testsuite/tests/overloadedrecflds/should_fail/T26480b.stderr - testsuite/tests/parser/should_fail/RecordDotSyntaxFail10.stderr - testsuite/tests/parser/should_fail/RecordDotSyntaxFail11.stderr - testsuite/tests/parser/should_fail/RecordDotSyntaxFail8.stderr - testsuite/tests/plugins/test-defaulting-plugin.stderr - testsuite/tests/printer/T17697.stderr - testsuite/tests/rebindable/rebindable6.stderr - testsuite/tests/rep-poly/RepPolyDoBind.stderr - testsuite/tests/rep-poly/RepPolyDoBody1.stderr - testsuite/tests/rep-poly/RepPolyDoBody2.stderr - testsuite/tests/rep-poly/RepPolyRecordUpdate.stderr - testsuite/tests/roles/should_compile/Roles1.stderr - testsuite/tests/roles/should_compile/Roles13.stderr - testsuite/tests/roles/should_compile/Roles14.stderr - testsuite/tests/roles/should_compile/Roles2.stderr - testsuite/tests/roles/should_compile/Roles3.stderr - testsuite/tests/roles/should_compile/Roles4.stderr - testsuite/tests/roles/should_compile/T8958.stderr - testsuite/tests/simplCore/should_compile/OpaqueNoCastWW.stderr - testsuite/tests/simplCore/should_compile/T3717.stderr - testsuite/tests/simplCore/should_compile/T3772.stdout - testsuite/tests/simplCore/should_compile/T4908.stderr - testsuite/tests/simplCore/should_compile/T4930.stderr - testsuite/tests/simplCore/should_compile/T7360.stderr - testsuite/tests/simplCore/should_compile/T8274.stdout - testsuite/tests/simplCore/should_compile/T9400.stderr - testsuite/tests/simplCore/should_compile/noinline01.stderr - testsuite/tests/simplCore/should_compile/par01.stderr - testsuite/tests/th/TH_Roles2.stderr - + testsuite/tests/typecheck/should_compile/ExpansionQLIm.hs - testsuite/tests/typecheck/should_compile/T13032.stderr - testsuite/tests/typecheck/should_compile/T14590.stderr - testsuite/tests/typecheck/should_compile/T18406b.stderr - testsuite/tests/typecheck/should_compile/T18529.stderr - testsuite/tests/typecheck/should_compile/all.T - testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr - testsuite/tests/typecheck/should_fail/DoExpansion1.stderr - testsuite/tests/typecheck/should_fail/DoExpansion2.stderr - testsuite/tests/typecheck/should_fail/T10971d.stderr - testsuite/tests/typecheck/should_fail/T13311.stderr - testsuite/tests/typecheck/should_fail/T3323.stderr - testsuite/tests/typecheck/should_fail/T3613.stderr - testsuite/tests/typecheck/should_fail/T6069.stderr - testsuite/tests/typecheck/should_fail/T7851.stderr - testsuite/tests/typecheck/should_fail/T7857.stderr - testsuite/tests/typecheck/should_fail/T8603.stderr - testsuite/tests/typecheck/should_fail/T9612.stderr - testsuite/tests/typecheck/should_fail/tcfail102.stderr - testsuite/tests/typecheck/should_fail/tcfail128.stderr - testsuite/tests/typecheck/should_fail/tcfail140.stderr - testsuite/tests/typecheck/should_fail/tcfail181.stderr - utils/check-exact/ExactPrint.hs - utils/check-exact/Parsers.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/427c26b4248a4abc92ef13f4f929ea… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/427c26b4248a4abc92ef13f4f929ea… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 2 commits: chore: Merge GHC.Internal.TH.Quote into GHC.Internal.TH.Monad
by Marge Bot (＠marge-bot) 09 Mar '26

09 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 919a7731 by Rajkumar Natarajan at 2026-03-09T16:51:14-04:00 chore: Merge GHC.Internal.TH.Quote into GHC.Internal.TH.Monad Move the QuasiQuoter datatype from GHC.Internal.TH.Quote to GHC.Internal.TH.Monad and delete the Quote module. Update submodule template-haskell-quasiquoter to use the merged upstream version that imports from the correct module. Co-authored-by: Cursor <cursoragent(a)cursor.com> - - - - - 87ad1dd8 by Simon Jakobi at 2026-03-09T16:51:14-04:00 Add regression test for #16122 - - - - - 13 changed files: - compiler/GHC/Builtin/Names/TH.hs - libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - − libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs - libraries/template-haskell-quasiquoter - testsuite/tests/linters/Makefile - testsuite/tests/plugins/plugins10.stdout - testsuite/tests/quotes/QQError.stderr - + testsuite/tests/simplCore/should_compile/T16122.hs - + testsuite/tests/simplCore/should_compile/T16122.stderr - testsuite/tests/simplCore/should_compile/all.T - testsuite/tests/th/QQTopError.stderr Changes: ===================================== compiler/GHC/Builtin/Names/TH.hs ===================================== @@ -185,7 +185,7 @@ thSyn, thMonad, thLib, qqLib, liftLib :: Module thSyn = mkTHModule (fsLit "GHC.Internal.TH.Syntax") thMonad = mkTHModule (fsLit "GHC.Internal.TH.Monad") thLib = mkTHModule (fsLit "GHC.Internal.TH.Lib") -qqLib = mkTHModule (fsLit "GHC.Internal.TH.Quote") +qqLib = mkTHModule (fsLit "GHC.Internal.TH.Monad") liftLib = mkTHModule (fsLit "GHC.Internal.TH.Lift") ===================================== libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs ===================================== @@ -1,5 +1,5 @@ {-# OPTIONS_HADDOCK not-home #-} module GHC.Boot.TH.Quote - (module GHC.Internal.TH.Quote) where + (QuasiQuoter(..)) where -import GHC.Internal.TH.Quote +import GHC.Internal.TH.Monad (QuasiQuoter(..)) ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -306,7 +306,6 @@ Library GHC.Internal.TH.Syntax GHC.Internal.TH.Lib GHC.Internal.TH.Lift - GHC.Internal.TH.Quote GHC.Internal.TH.Monad GHC.Internal.TopHandler GHC.Internal.TypeError ===================================== libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs ===================================== @@ -20,6 +20,7 @@ -- Import "Language.Haskell.TH" or "Language.Haskell.TH.Syntax" instead! module GHC.Internal.TH.Monad ( module GHC.Internal.TH.Monad + , QuasiQuoter(..) ) where #ifdef BOOTSTRAP_TH @@ -313,6 +314,33 @@ class Monad m => Quote m where instance Quote Q where newName s = Q (qNewName s) +----------------------------------------------------- +-- +-- The QuasiQuoter type +-- +----------------------------------------------------- + +-- | The 'QuasiQuoter' type, a value @q@ of this type can be used +-- in the syntax @[q| ... string to parse ...|]@. In fact, for +-- convenience, a 'QuasiQuoter' actually defines multiple quasiquoters +-- to be used in different splice contexts. In the usual case of a +-- @QuasiQuoter@ that is only intended to be used in certain splice +-- contexts, the unused fields should just 'fail'. This is most easily +-- accomplished using 'namedefaultQuasiQuoter' or 'defaultQuasiQuoter'. +-- +-- This is exposed both from the @template-haskell-quasiquoter@ and @template-haskell@ packages. +-- Consider importing it from the more stable @template-haskell-quasiquoter@ if you don't need the full breadth of the @template-haskell@ interface. +data QuasiQuoter = QuasiQuoter { + -- | Quasi-quoter for expressions, invoked by quotes like @lhs = $[q|...]@ + quoteExp :: String -> Q Exp, + -- | Quasi-quoter for patterns, invoked by quotes like @f $[q|...] = rhs@ + quotePat :: String -> Q Pat, + -- | Quasi-quoter for types, invoked by quotes like @f :: $[q|...]@ + quoteType :: String -> Q Type, + -- | Quasi-quoter for declarations, invoked by top-level quotes + quoteDec :: String -> Q [Dec] + } + ----------------------------------------------------- -- -- The TExp type ===================================== libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs deleted ===================================== @@ -1,46 +0,0 @@ -{-# LANGUAGE CPP, RankNTypes, ScopedTypeVariables, Trustworthy #-} -{- | -Module : GHC.Internal.TH.Quote -Description : Quasi-quoting support for Template Haskell - -Template Haskell supports quasiquoting, which permits users to construct -program fragments by directly writing concrete syntax. A quasiquoter is -essentially a function with takes a string to a Template Haskell AST. -This module defines the 'QuasiQuoter' datatype, which specifies a -quasiquoter @q@ which can be invoked using the syntax -@[q| ... string to parse ... |]@ when the @QuasiQuotes@ language -extension is enabled, and some utility functions for manipulating -quasiquoters. Nota bene: this package does not define any parsers, -that is up to you. - -This is an internal module. Please import 'Language.Haskell.TH.Quote' instead. --} -module GHC.Internal.TH.Quote( - QuasiQuoter(..), - ) where - -import GHC.Internal.TH.Syntax -import GHC.Internal.TH.Monad -import GHC.Internal.Base hiding (Type) - - --- | The 'QuasiQuoter' type, a value @q@ of this type can be used --- in the syntax @[q| ... string to parse ...|]@. In fact, for --- convenience, a 'QuasiQuoter' actually defines multiple quasiquoters --- to be used in different splice contexts. In the usual case of a --- @QuasiQuoter@ that is only intended to be used in certain splice --- contexts, the unused fields should just 'fail'. This is most easily --- accomplished using 'namedefaultQuasiQuoter' or 'defaultQuasiQuoter'. --- --- This is exposed both from the @template-haskell-quasiquoter@ and @template-haskell@ packages. --- Consider importing it from the more stable @template-haskell-quasiquoter@ if you don't need the full breadth of the @template-haskell@ interface. -data QuasiQuoter = QuasiQuoter { - -- | Quasi-quoter for expressions, invoked by quotes like @lhs = $[q|...]@ - quoteExp :: String -> Q Exp, - -- | Quasi-quoter for patterns, invoked by quotes like @f $[q|...] = rhs@ - quotePat :: String -> Q Pat, - -- | Quasi-quoter for types, invoked by quotes like @f :: $[q|...]@ - quoteType :: String -> Q Type, - -- | Quasi-quoter for declarations, invoked by top-level quotes - quoteDec :: String -> Q [Dec] - } ===================================== libraries/template-haskell-quasiquoter ===================================== @@ -1 +1 @@ -Subproject commit a47506eca032b139d9779fb8210d408c81d3fbd6 +Subproject commit e7c7af444a467fb8d56483583987002b43317576 ===================================== testsuite/tests/linters/Makefile ===================================== @@ -81,7 +81,6 @@ whitespace: libraries/base/include/HsEvent.h\ libraries/base/include/md5.h\ libraries/ghc-prim/GHC/Tuple.hs\ - libraries/template-haskell/Language/Haskell/TH/Quote.hs\ rts/STM.h\ rts/Sparks.h\ rts/Threads.h\ ===================================== testsuite/tests/plugins/plugins10.stdout ===================================== @@ -6,10 +6,9 @@ interfacePlugin: GHC.Internal.Base interfacePlugin: GHC.Internal.Data.NonEmpty interfacePlugin: GHC.Internal.Float interfacePlugin: GHC.Internal.Prim.Ext -interfacePlugin: GHC.Internal.TH.Quote +interfacePlugin: GHC.Internal.TH.Monad interfacePlugin: GHC.Internal.TH.Syntax typeCheckPlugin (rn) -interfacePlugin: GHC.Internal.TH.Monad interfacePlugin: GHC.Internal.Stack.Types interfacePlugin: GHC.Internal.Exception.Context typeCheckPlugin (tc) ===================================== testsuite/tests/quotes/QQError.stderr ===================================== @@ -1,5 +1,5 @@ QQError.hs:5:12: error: [GHC-83865] - • Couldn't match expected type ‘GHC.Internal.TH.Quote.QuasiQuoter’ + • Couldn't match expected type ‘GHC.Internal.TH.Monad.QuasiQuoter’ with actual type ‘a1 -> a1’ • Probable cause: ‘id’ is applied to too few arguments In the expression: [| [id|hello|] |] @@ -9,7 +9,7 @@ QQError.hs:5:12: error: [GHC-83865] | ^^ QQError.hs:7:13: error: [GHC-83865] - • Couldn't match expected type ‘GHC.Internal.TH.Quote.QuasiQuoter’ + • Couldn't match expected type ‘GHC.Internal.TH.Monad.QuasiQuoter’ with actual type ‘a0 -> a0’ • Probable cause: ‘id’ is applied to too few arguments In the expression: [| [id|hello|] |] ===================================== testsuite/tests/simplCore/should_compile/T16122.hs ===================================== @@ -0,0 +1,12 @@ +{-# LANGUAGE TypeApplications #-} +-- Test that the Core for f isn't "worse" than g's. +-- The optimized Core for f used to involve dictionary-passing. See #16122. +module T16122 (f, g) where + +import Data.Int (Int64) + +f :: Double -> Int64 +f = round + +g :: Double -> Int64 +g = fromIntegral @Int @Int64 . round ===================================== testsuite/tests/simplCore/should_compile/T16122.stderr ===================================== @@ -0,0 +1,26 @@ +f = \ x -> + I64# + (case x of { D# ds1 -> + case {__ffi_static_ccall_unsafe ghc-internal:rintDouble :: Double# + -> State# RealWorld + -> (# State# RealWorld, Double# #)} + ds1 realWorld# + of + { (# _, ds3 #) -> + intToInt64# (double2Int# ds3) + } + }) + +g = \ x -> + I64# + (case x of { D# ds1 -> + case {__ffi_static_ccall_unsafe ghc-internal:rintDouble :: Double# + -> State# RealWorld + -> (# State# RealWorld, Double# #)} + ds1 realWorld# + of + { (# _, ds3 #) -> + intToInt64# (double2Int# ds3) + } + }) + ===================================== testsuite/tests/simplCore/should_compile/all.T ===================================== @@ -295,6 +295,10 @@ test('T15631', normal, makefile_test, ['T15631']) test('T15673', normal, compile, ['-O']) +test('T16122', [when(wordsize(32), skip)], + multimod_compile_filter, + ['T16122', '-O -ddump-simpl -dsuppress-all -dsuppress-uniques -dno-typeable-binds', + "sed -n '/^f = /,/^$/p;/^g = /,/^$/p'"]) test('T16288', normal, multimod_compile, ['T16288B', '-O -dcore-lint -v0']) test('T16348', normal, compile, ['-O']) test('T16918', normal, compile, ['-O']) ===================================== testsuite/tests/th/QQTopError.stderr ===================================== @@ -1,10 +1,10 @@ QQTopError.hs:4:9: error: [GHC-83865] - • Couldn't match expected type ‘GHC.Internal.TH.Quote.QuasiQuoter’ + • Couldn't match expected type ‘GHC.Internal.TH.Monad.QuasiQuoter’ with actual type ‘a0 -> a0’ • Probable cause: ‘id’ is applied to too few arguments - In the first argument of ‘GHC.Internal.TH.Quote.quoteExp’, namely + In the first argument of ‘GHC.Internal.TH.Monad.quoteExp’, namely ‘id’ - In the expression: GHC.Internal.TH.Quote.quoteExp id "hello" + In the expression: GHC.Internal.TH.Monad.quoteExp id "hello" In the quasi-quotation: [id|hello|] | 4 | main = [id|hello|] View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bf3db183f293cfa6603be29358ec9d… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bf3db183f293cfa6603be29358ec9d… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/sjakobi/T18177
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed new branch wip/sjakobi/T18177 at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/sjakobi/T18177 You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26868] 2 commits: Wibbles [skip ci]
by Simon Peyton Jones (＠simonpj) 09 Mar '26

09 Mar '26

Simon Peyton Jones pushed to branch wip/T26868 at Glasgow Haskell Compiler / GHC Commits: 946aef8b by Simon Peyton Jones at 2026-03-09T17:45:59+00:00 Wibbles [skip ci] - - - - - bdaba642 by Simon Peyton Jones at 2026-03-09T17:45:59+00:00 Quick fixes after talking with Richard [skip ci] Needs fixups - - - - - 21 changed files: - compiler/GHC/Core.hs - compiler/GHC/Types/Var/FV.hs - compiler/GHC/Utils/EndoOS.hs - testsuite/tests/polykinds/T7328.stderr - testsuite/tests/simplCore/should_compile/DsSpecPragmas.stderr - testsuite/tests/simplCore/should_compile/T24229a.stderr - testsuite/tests/simplCore/should_compile/T24229b.stderr - testsuite/tests/simplCore/should_compile/T24359a.stderr - testsuite/tests/simplCore/should_compile/T26116.stderr - testsuite/tests/simplCore/should_compile/T4908.stderr - testsuite/tests/simplCore/should_compile/spec-inline.stderr - testsuite/tests/typecheck/no_skolem_info/T20063.stderr - testsuite/tests/typecheck/should_compile/T25180.stderr - testsuite/tests/typecheck/should_compile/free_monad_hole_fits.stderr - testsuite/tests/typecheck/should_fail/T10971d.stderr - testsuite/tests/typecheck/should_fail/T12589.stderr - testsuite/tests/typecheck/should_fail/T13311.stderr - testsuite/tests/typecheck/should_fail/T17773.stderr - testsuite/tests/typecheck/should_fail/T2846b.stderr - testsuite/tests/typecheck/should_fail/T7851.stderr - testsuite/tests/typecheck/should_fail/T8603.stderr Changes: ===================================== compiler/GHC/Core.hs ===================================== @@ -409,7 +409,7 @@ Consider applying `exprType` to this term: where we have genuine shadowing: both lambdas bind the same a. Remember: every occurrence of `x` is just a copy of the binder (x::[a]), and ditto `y`. -Now what does `exprType` return for that term? It will return the bogus type +Now what does `exprType` return for that term? It will return the incorrect type forall a. [a] -> forall a. a -> ([a],a) ===================================== compiler/GHC/Types/Var/FV.hs ===================================== @@ -136,9 +136,9 @@ type InterestingVarFun = Var -> Bool type BoundVars = TyCoVarSet -type VarSetFV = FV BoundVars (EndoOS TyCoVarSet) -type DVarSetFV = FV BoundVars (EndoOS DTyCoVarSet) -type SelectiveFV = FV (InterestingVarFun, BoundVars) (EndoOS DVarSet) +type VarSetFV = FV BoundVars (EndoOS TyCoVarSet) +type DVarSetFV = FV BoundVars (EndoOS DTyCoVarSet) +type SelectiveDFV = FV (InterestingVarFun, BoundVars) (EndoOS DVarSet) -- VarSetFV: collects a VarSet -- DVarSetFV: collects a DVarSet (deterministic) -- SelectiveFV: selectively collects a DVarSet ===================================== compiler/GHC/Utils/EndoOS.hs ===================================== @@ -9,7 +9,7 @@ -- -- It is also strict: see the (<>) method in he Semigroup instance -module GHC.Utils.EndoOS( EndoOS(EndoOS, runEndoOS ), foldEndoOS ) where +module GHC.Utils.EndoOS( EndoOS(EndoOS, runEndoOS ) ) where import GHC.Prelude @@ -40,6 +40,3 @@ pattern EndoOS f <- EndoOS' f EndoOS f = EndoOS' (oneShot f) -- oneShot: this is the core of the one-shot trick! -- Note [The one-shot state monad trick] in GHC.Utils.Monad. - -foldEndoOS :: Foldable t => (a -> Endo b) -> t a -> Endo b -foldEndoOS f xs = foldr ((<>) . f) mempty xs ===================================== testsuite/tests/polykinds/T7328.stderr ===================================== @@ -1,6 +1,6 @@ - T7328.hs:8:34: error: [GHC-27958] - • Expected kind ‘k1’, but ‘f’ has kind ‘k0 -> k1’ + • Expected kind ‘k0’, but ‘f’ has kind ‘k1 -> k0’ • In the first argument of ‘Foo’, namely ‘f’ In the first argument of ‘Proxy’, namely ‘(Foo f)’ In the type signature: foo :: a ~ f i => Proxy (Foo f) + ===================================== testsuite/tests/simplCore/should_compile/DsSpecPragmas.stderr ===================================== @@ -1,78 +1,78 @@ ==================== Tidy Core rules ==================== "USPEC f1 @Word @[e]" - forall (@e) ($dEq :: Eq [e]) ($dNum :: Num Word). + forall (@e) ($dNum :: Num Word) ($dEq :: Eq [e]). f1 @Word @[e] $dNum $dEq = \ _ [Occ=Dead] _ [Occ=Dead] -> I# 111# "USPEC f1 @Word @_" - forall (@e) ($dEq :: Eq e) ($dNum :: Num Word). + forall (@e) ($dNum :: Num Word) ($dEq :: Eq e). f1 @Word @e $dNum $dEq = \ _ [Occ=Dead] _ [Occ=Dead] -> I# 111# "USPEC f1_qc @_ @(g e) @Word" - forall (@e) - (@(g :: * -> *)) - ($dNum :: Num Word) + forall (@(g :: * -> *)) + (@e) + (df :: forall x. Eq x => Eq (g x)) ($dEq :: Eq (g e)) - (df :: forall x. Eq x => Eq (g x)). + ($dNum :: Num Word). f1_qc @g @(g e) @Word df $dEq $dNum = \ _ [Occ=Dead] _ [Occ=Dead] _ [Occ=Dead] -> C# 'q'# "USPEC f2 @_ @_ @Word" - forall (@c) ($dNum :: Num Word) ($dEq :: Eq c) ($dEq1 :: Eq c). - f2 @c @c @Word $dEq1 $dEq $dNum + forall (@c) ($dEq :: Eq c) ($dEq1 :: Eq c) ($dNum :: Num Word). + f2 @c @c @Word $dEq $dEq1 $dNum = \ _ [Occ=Dead] _ [Occ=Dead] _ [Occ=Dead] -> I# 2# "USPEC f3 @Int @_" forall (@(g :: * -> *)) - (df :: forall x. Eq x => Eq (g x)) - ($dEq :: Eq Int). + ($dEq :: Eq Int) + (df :: forall x. Eq x => Eq (g x)). f3 @Int @g $dEq df = f3_$sf3 @g df "USPEC f3 @_ @[]" - forall (@c) (df :: forall x. Eq x => Eq [x]) ($dEq :: Eq c). + forall (@c) ($dEq :: Eq c) (df :: forall x. Eq x => Eq [x]). f3 @c @[] $dEq df = f3_$sf1 @c $dEq "USPEC f4 @_ @(ST s)" - forall (@s) (@b) ($dMonad :: Monad (ST s)) ($dEq :: Eq b). + forall (@b) (@s) ($dEq :: Eq b) ($dMonad :: Monad (ST s)). f4 @b @(ST s) $dEq $dMonad = $fApplicativeST_$cpure @s @b "USPEC f4_qc @Int @_ @_" - forall (@(n :: * -> *)) - (@(r :: (* -> *) -> * -> *)) - (df :: forall (m :: * -> *). Monad m => Monad (r m)) - ($dEq :: Eq Int). + forall (@(r :: (* -> *) -> * -> *)) + (@(n :: * -> *)) + ($dEq :: Eq Int) + (df :: forall (m :: * -> *). Monad m => Monad (r m)). f4_qc @Int @r @n $dEq df = \ _ [Occ=Dead] -> () "USPEC f5 @(D Int)" forall ($dEq :: Eq (D Int)). f5 @(D Int) $dEq = f5_$sf5 "USPEC f5_qc @Int @D" - forall (df :: forall x. (Eq x, Eq (T x)) => Eq (D x)) - ($dEq :: Eq (T Int)) - ($dEq1 :: Eq Int). - f5_qc @Int @D $dEq1 $dEq df + forall ($dEq :: Eq Int) + ($dEq1 :: Eq (T Int)) + (df :: forall x. (Eq x, Eq (T x)) => Eq (D x)). + f5_qc @Int @D $dEq $dEq1 df = f5_$sf5 "USPEC f5_qc @Int @_" forall (@(g :: * -> *)) - (df :: forall x. (Eq x, Eq (T x)) => Eq (g x)) - ($dEq :: Eq (T Int)) - ($dEq1 :: Eq Int). - f5_qc @Int @g $dEq1 $dEq df + ($dEq :: Eq Int) + ($dEq1 :: Eq (T Int)) + (df :: forall x. (Eq x, Eq (T x)) => Eq (g x)). + f5_qc @Int @g $dEq $dEq1 df = f5_qc_$sf5_qc @g df "USPEC f6 @_ @_ @Word" - forall (@c) ($dNum :: Num Word) ($dOrd :: Ord c) ($dEq :: Eq c). + forall (@c) ($dEq :: Eq c) ($dOrd :: Ord c) ($dNum :: Num Word). f6 @c @c @Word $dEq $dOrd $dNum = \ _ [Occ=Dead] _ [Occ=Dead] _ [Occ=Dead] -> C# 'c'# "USPEC f6_qc @_ @_ @Word" forall (@(h :: * -> *)) - ($dNum :: Num Word) - (df :: forall y. Eq y => Ord (h y)) - (df1 :: forall x. Eq x => Eq (h x)). - f6_qc @h @h @Word df1 df $dNum + (df :: forall x. Eq x => Eq (h x)) + (df1 :: forall y. Eq y => Ord (h y)) + ($dNum :: Num Word). + f6_qc @h @h @Word df df1 $dNum = \ _ [Occ=Dead] _ [Occ=Dead] _ [Occ=Dead] -> C# 'd'# "USPEC f7 @Int" - forall ($dEq :: Eq Int) ($dCls :: Cls (TF Int)). + forall ($dCls :: Cls (TF Int)) ($dEq :: Eq Int). f7 @Int $dCls $dEq = \ (x [Occ=Once1] :: Int) -> x "USPEC qcfd @C @G" - forall (df :: forall a b. C (a, b)) ($dF :: F C G). + forall ($dF :: F C G) (df :: forall a b. C (a, b)). qcfd @C @G $dF df = qcfd_x ===================================== testsuite/tests/simplCore/should_compile/T24229a.stderr ===================================== @@ -5,9 +5,9 @@ Result size of Tidy Core = {terms: 79, types: 106, coercions: 8, joins: 0/0} Rec { foo_$s$wfoo = \ @a sc sc1 sc2 -> - case sc2 of ds { - __DEFAULT -> foo_$s$wfoo sc1 sc (-# ds 1#); - 0# -> (# (sc, sc1) #) + case sc of ds { + __DEFAULT -> foo_$s$wfoo (-# ds 1#) sc2 sc1; + 0# -> (# (sc1, sc2) #) } end Rec } @@ -15,7 +15,7 @@ foo = \ @a ds ds1 -> case ds of { I# ww -> case ww of ds2 { - __DEFAULT -> case ds1 `cast` <Co:4> :: ... of { (x, y) -> case foo_$s$wfoo y x (-# ds2 1#) of { (# ww1 #) -> Just ww1 } }; + __DEFAULT -> case ds1 `cast` <Co:4> :: ... of { (x, y) -> case foo_$s$wfoo (-# ds2 1#) y x of { (# ww1 #) -> Just ww1 } }; 0# -> Just (ds1 `cast` <Co:4> :: ...) } } @@ -28,11 +28,11 @@ wombat5 = "no"# wombat4 = unpackCString# wombat5 -wombat1 = case foo_$s$wfoo wombat6 wombat4 20# of { (# ww #) -> Just ww } +wombat1 = case foo_$s$wfoo 20# wombat6 wombat4 of { (# ww #) -> Just ww } wombat8 = I# 3# -wombat2 = \ @a xs ys -> case foo_$s$wfoo xs ys 3# of { (# ww #) -> Just ww } +wombat2 = \ @a xs ys -> case foo_$s$wfoo 3# xs ys of { (# ww #) -> Just ww } ===================================== testsuite/tests/simplCore/should_compile/T24229b.stderr ===================================== @@ -5,9 +5,9 @@ Result size of Tidy Core = {terms: 60, types: 83, coercions: 8, joins: 0/0} Rec { foo_$s$wfoo = \ @a sc sc1 sc2 -> - case sc2 of ds { - __DEFAULT -> foo_$s$wfoo sc1 sc (-# ds 1#); - 0# -> (# (sc, sc1) #) + case sc of ds { + __DEFAULT -> foo_$s$wfoo (-# ds 1#) sc2 sc1; + 0# -> (# (sc1, sc2) #) } end Rec } @@ -15,14 +15,14 @@ foo = \ @a ds ds1 -> case ds of { I# ww -> case ww of ds2 { - __DEFAULT -> case ds1 `cast` <Co:4> :: ... of { (x, y) -> case foo_$s$wfoo y x (-# ds2 1#) of { (# ww1 #) -> Just ww1 } }; + __DEFAULT -> case ds1 `cast` <Co:4> :: ... of { (x, y) -> case foo_$s$wfoo (-# ds2 1#) y x of { (# ww1 #) -> Just ww1 } }; 0# -> Just (ds1 `cast` <Co:4> :: ...) } } wombat1 = I# 3# -wombat2 = \ @a xs ys -> case foo_$s$wfoo xs ys 3# of { (# ww #) -> Just ww } +wombat2 = \ @a xs ys -> case foo_$s$wfoo 3# xs ys of { (# ww #) -> Just ww } ===================================== testsuite/tests/simplCore/should_compile/T24359a.stderr ===================================== @@ -1,7 +1,8 @@ ==================== Tidy Core rules ==================== "USPEC showsIArray @UA @_" - forall (@i) ($dShow :: Show i) ($dIArray :: IArray UA). + forall (@i) ($dIArray :: IArray UA) ($dShow :: Show i). showsIArray @UA @i $dIArray $dShow = showsIArray_$sshowsIArray @i $dShow + ===================================== testsuite/tests/simplCore/should_compile/T26116.stderr ===================================== @@ -1,11 +1,11 @@ ==================== Tidy Core rules ==================== "USPEC $cop1 @T @_" - forall (@a) ($dD :: D a) ($dEq :: Eq (T a)). + forall (@a) ($dEq :: Eq (T a)) ($dD :: D a). $fCTYPEfa_$cop1 @T @a $dEq $dD = \ _ [Occ=Dead] -> I# 3# "USPEC $fCTYPEfa @T @_" - forall (@a) ($dD :: D a) ($dEq :: Eq (T a)). + forall (@a) ($dEq :: Eq (T a)) ($dD :: D a). $fCTYPEfa @T @a $dEq $dD = $fCTYPEfa_$s$fCTYPEfa @a $dD ===================================== testsuite/tests/simplCore/should_compile/T4908.stderr ===================================== @@ -47,14 +47,14 @@ T4908.$trModule Rec { -- RHS size: {terms: 19, types: 5, coercions: 0, joins: 0/0} T4908.f_$s$wf [InlPrag=[2], Occ=LoopBreaker] - :: Int -> Int# -> Int# -> (# #) -[GblId, Arity=3, Str=<A><ML><1L>, Unf=OtherCon []] + :: Int# -> Int -> Int# -> (# #) +[GblId, Arity=3, Str=<1L><A><ML>, Unf=OtherCon []] T4908.f_$s$wf - = \ (sc :: Int) (sc1 :: Int#) (sc2 :: Int#) -> - case sc2 of ds { + = \ (sc :: Int#) (sc1 :: Int) (sc2 :: Int#) -> + case sc of ds { __DEFAULT -> - case sc1 of ds1 { - __DEFAULT -> T4908.f_$s$wf sc ds1 (-# ds 1#); + case sc2 of ds1 { + __DEFAULT -> T4908.f_$s$wf (-# ds 1#) sc1 ds1; 0# -> GHC.Internal.Types.(##) }; 0# -> GHC.Internal.Types.(##) @@ -78,7 +78,7 @@ f [InlPrag=[2]] :: Int -> (Int, Int) -> Bool case b of { I# ds2 [Occ=Once1!] -> case ds2 of ds3 [Occ=Once1] { __DEFAULT -> - case T4908.f_$s$wf a ds3 (-# ds1 1#) of { (# #) -> + case T4908.f_$s$wf (-# ds1 1#) a ds3 of { (# #) -> GHC.Internal.Types.True }; 0# -> GHC.Internal.Types.True @@ -96,7 +96,7 @@ f = \ (ds :: Int) (x :: (Int, Int)) -> case b of { I# ds2 -> case ds2 of ds3 { __DEFAULT -> - case T4908.f_$s$wf a ds3 (-# ds1 1#) of { (# #) -> + case T4908.f_$s$wf (-# ds1 1#) a ds3 of { (# #) -> GHC.Internal.Types.True }; 0# -> GHC.Internal.Types.True ===================================== testsuite/tests/simplCore/should_compile/spec-inline.stderr ===================================== @@ -20,23 +20,23 @@ Rec { Roman.foo_$s$wgo [InlPrag=[2], Occ=LoopBreaker] :: GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -[GblId, Arity=2, Str=<A><L>, Unf=OtherCon []] +[GblId, Arity=2, Str=<L><A>, Unf=OtherCon []] Roman.foo_$s$wgo = \ (sc :: GHC.Internal.Prim.Int#) (sc1 :: GHC.Internal.Prim.Int#) -> - case GHC.Internal.Prim.<=# sc1 0# of { + case GHC.Internal.Prim.<=# sc 0# of { __DEFAULT -> - case GHC.Internal.Prim.<# sc1 100# of { + case GHC.Internal.Prim.<# sc 100# of { __DEFAULT -> - case GHC.Internal.Prim.<# sc1 500# of { + case GHC.Internal.Prim.<# sc 500# of { __DEFAULT -> Roman.foo_$s$wgo - (GHC.Internal.Prim.*# 14# sc) (GHC.Internal.Prim.-# sc1 1#); + (GHC.Internal.Prim.-# sc 1#) (GHC.Internal.Prim.*# 14# sc1); 1# -> Roman.foo_$s$wgo - (GHC.Internal.Prim.*# 7# sc) (GHC.Internal.Prim.-# sc1 3#) + (GHC.Internal.Prim.-# sc 3#) (GHC.Internal.Prim.*# 7# sc1) }; - 1# -> Roman.foo_$s$wgo sc (GHC.Internal.Prim.-# sc1 2#) + 1# -> Roman.foo_$s$wgo (GHC.Internal.Prim.-# sc 2#) sc1 }; 1# -> 0# } @@ -58,7 +58,7 @@ Roman.$wgo Just x -> case x of { GHC.Internal.Types.I# ipv -> case u of { - Nothing -> Roman.foo_$s$wgo (GHC.Internal.Prim.*# 7# ipv) 10#; + Nothing -> Roman.foo_$s$wgo 10# (GHC.Internal.Prim.*# 7# ipv); Just n -> case n of { GHC.Internal.Types.I# x2 -> case GHC.Internal.Prim.<=# x2 0# of { @@ -68,12 +68,12 @@ Roman.$wgo case GHC.Internal.Prim.<# x2 500# of { __DEFAULT -> Roman.foo_$s$wgo - (GHC.Internal.Prim.*# 14# ipv) (GHC.Internal.Prim.-# x2 1#); + (GHC.Internal.Prim.-# x2 1#) (GHC.Internal.Prim.*# 14# ipv); 1# -> Roman.foo_$s$wgo - (GHC.Internal.Prim.*# 7# ipv) (GHC.Internal.Prim.-# x2 3#) + (GHC.Internal.Prim.-# x2 3#) (GHC.Internal.Prim.*# 7# ipv) }; - 1# -> Roman.foo_$s$wgo ipv (GHC.Internal.Prim.-# x2 2#) + 1# -> Roman.foo_$s$wgo (GHC.Internal.Prim.-# x2 2#) ipv }; 1# -> 0# } @@ -134,7 +134,7 @@ foo :: Int -> Int foo = \ (n :: Int) -> case n of { GHC.Internal.Types.I# ipv -> - case Roman.foo_$s$wgo 6# ipv of ww { __DEFAULT -> + case Roman.foo_$s$wgo ipv 6# of ww { __DEFAULT -> GHC.Internal.Types.I# ww } } @@ -145,8 +145,8 @@ foo forall (sc :: GHC.Internal.Prim.Int#) (sc1 :: GHC.Internal.Prim.Int#). Roman.$wgo (GHC.Internal.Maybe.Just - @Int (GHC.Internal.Types.I# sc1)) - (GHC.Internal.Maybe.Just @Int (GHC.Internal.Types.I# sc)) + @Int (GHC.Internal.Types.I# sc)) + (GHC.Internal.Maybe.Just @Int (GHC.Internal.Types.I# sc1)) = Roman.foo_$s$wgo sc sc1 ===================================== testsuite/tests/typecheck/no_skolem_info/T20063.stderr ===================================== @@ -1,23 +1,23 @@ T20063.hs:25:21: error: [GHC-25897] - • Could not deduce ‘ctx6 ~ (ctx0 :*& l0)’ - from the context: (ctx4 ~ Extend ctx1, ctx5 ~ Extend ctx2) + • Could not deduce ‘ctx4 ~ (ctx0 :*& l0)’ + from the context: (ctx1 ~ Extend ctx2, ctx2 ~ Extend ctx1) bound by a pattern with constructor: U :: forall {k} (ctx1 :: Context) (ctx2 :: Context) (l :: k). Rn ctx1 ctx2 -> Rn (ctx1 :*& l) (ctx2 :*& l), in an equation for ‘rnRename’ at T20063.hs:25:11-13 - Expected: Idx ctx6 + Expected: Idx ctx4 Actual: Idx (ctx0 :*& l0) - ‘ctx6’ is a rigid type variable bound by + ‘ctx4’ is a rigid type variable bound by the type signature for: - rnRename :: forall (ctx4 :: Context) (ctx5 :: Context) - (ctx3 :: Context) (ctx6 :: Context). - Rn ctx4 ctx5 -> Idx ctx3 -> Idx ctx6 + rnRename :: forall (ctx7 :: Context) (ctx8 :: Context) + (ctx3 :: Context) (ctx4 :: Context). + Rn ctx7 ctx8 -> Idx ctx3 -> Idx ctx4 at T20063.hs:24:1-48 • In the expression: T _ In an equation for ‘rnRename’: rnRename (U _) _ = T _ • Relevant bindings include - rnRename :: Rn ctx4 ctx5 -> Idx ctx3 -> Idx ctx6 + rnRename :: Rn ctx7 ctx8 -> Idx ctx3 -> Idx ctx4 (bound at T20063.hs:25:1) T20063.hs:26:17: error: [GHC-27346] ===================================== testsuite/tests/typecheck/should_compile/T25180.stderr ===================================== @@ -146,7 +146,7 @@ T25180.hs:66:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] T25180.hs:73:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _ :: b -> (# a | b #) - Where: ‘a’, ‘b’ are rigid type variables bound by + Where: ‘b’, ‘a’ are rigid type variables bound by the type signature for: usum2_2 :: forall b a. b -> (# a | b #) at T25180.hs:72:1-27 @@ -176,7 +176,7 @@ T25180.hs:80:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] T25180.hs:87:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _ :: b -> (# a | b | c #) - Where: ‘a’, ‘b’, ‘c’ are rigid type variables bound by + Where: ‘b’, ‘a’, ‘c’ are rigid type variables bound by the type signature for: usum3_2 :: forall b a c. b -> (# a | b | c #) at T25180.hs:86:1-31 @@ -191,7 +191,7 @@ T25180.hs:87:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] T25180.hs:94:11: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _ :: c -> (# a | b | c #) - Where: ‘a’, ‘b’, ‘c’ are rigid type variables bound by + Where: ‘c’, ‘a’, ‘b’ are rigid type variables bound by the type signature for: usum3_3 :: forall c a b. c -> (# a | b | c #) at T25180.hs:93:1-31 ===================================== testsuite/tests/typecheck/should_compile/free_monad_hole_fits.stderr ===================================== @@ -1,13 +1,13 @@ free_monad_hole_fits.hs:14:28: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _a :: (Free f a -> Free f b) -> f (Free f a) -> f (Free f b) - Where: ‘a’, ‘b’ are rigid type variables bound by + Where: ‘f’ is a rigid type variable bound by + the instance declaration + at free_monad_hole_fits.hs:10:10-38 + ‘a’, ‘b’ are rigid type variables bound by the type signature for: fmap :: forall a b. (a -> b) -> Free f a -> Free f b at free_monad_hole_fits.hs:11:5-8 - ‘f’ is a rigid type variable bound by - the instance declaration - at free_monad_hole_fits.hs:10:10-38 Or perhaps ‘_a’ is mis-spelled, or not in scope • In the first argument of ‘Free’, namely ‘(_a go fa)’ In the expression: Free (_a go fa) @@ -35,13 +35,13 @@ free_monad_hole_fits.hs:14:28: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault free_monad_hole_fits.hs:25:31: warning: [GHC-88464] [-Wtyped-holes (in -Wdefault)] • Found hole: _a :: Free f a -> Free f b - Where: ‘a’, ‘b’ are rigid type variables bound by + Where: ‘f’ is a rigid type variable bound by + the instance declaration + at free_monad_hole_fits.hs:22:10-40 + ‘a’, ‘b’ are rigid type variables bound by the type signature for: (>>=) :: forall a b. Free f a -> (a -> Free f b) -> Free f b at free_monad_hole_fits.hs:23:12-14 - ‘f’ is a rigid type variable bound by - the instance declaration - at free_monad_hole_fits.hs:22:10-40 Or perhaps ‘_a’ is mis-spelled, or not in scope • In the first argument of ‘fmap’, namely ‘_a’ In the first argument of ‘Free’, namely ‘(fmap _a f)’ ===================================== testsuite/tests/typecheck/should_fail/T10971d.stderr ===================================== @@ -1,21 +1,21 @@ - T10971d.hs:4:14: error: [GHC-83865] - • Couldn't match expected type: [a0] - with actual type: Maybe a3 + • Couldn't match expected type: [a1] + with actual type: Maybe a0 • In the first argument of ‘f’, namely ‘(Just 1)’ In the second argument of ‘($)’, namely ‘f (Just 1)’ In a stmt of a 'do' block: print $ f (Just 1) T10971d.hs:5:19: error: [GHC-83865] • Couldn't match expected type: [b0] - with actual type: Maybe a4 + with actual type: Maybe a2 • In the second argument of ‘g’, namely ‘(Just 5)’ In the second argument of ‘($)’, namely ‘g (+ 1) (Just 5)’ In a stmt of a 'do' block: print $ g (+ 1) (Just 5) T10971d.hs:6:23: error: [GHC-83865] - • Couldn't match expected type: [a2] - with actual type: Maybe a1 + • Couldn't match expected type: [a4] + with actual type: Maybe a3 • In the second argument of ‘h’, namely ‘Nothing’ In the second argument of ‘($)’, namely ‘h (const 5) Nothing’ In a stmt of a 'do' block: print $ h (const 5) Nothing + ===================================== testsuite/tests/typecheck/should_fail/T12589.stderr ===================================== @@ -1,3 +1,3 @@ - T12589.hs:13:3: error: [GHC-88464] - Variable not in scope: (&) :: t0 -> t1 -> t + Variable not in scope: (&) :: t1 -> t0 -> t + ===================================== testsuite/tests/typecheck/should_fail/T13311.stderr ===================================== @@ -1,7 +1,6 @@ - T13311.hs:9:3: error: [GHC-83865] - • Couldn't match expected type: IO a0 - with actual type: Maybe a1 -> Maybe b0 + • Couldn't match expected type: IO a1 + with actual type: Maybe a0 -> Maybe b0 • Probable cause: ‘f’ is applied to too few arguments In a stmt of a 'do' block: f In the expression: @@ -10,3 +9,4 @@ T13311.hs:9:3: error: [GHC-83865] In an equation for ‘g’: g = do f putChar 'a' + ===================================== testsuite/tests/typecheck/should_fail/T17773.stderr ===================================== @@ -1,7 +1,6 @@ - T17773.hs:16:22: error: [GHC-88464] • Found hole: _Refl :: Mzero x y :~: (x <|> y) - Where: ‘x’, ‘f’, ‘k’, ‘a’, ‘y’ are rigid type variables bound by + Where: ‘k’, ‘f’, ‘a’, ‘x’, ‘y’ are rigid type variables bound by the type signature for: monadPlusMplus :: forall {k} (f :: k -> *) (a :: k) (x :: f a) (y :: f a). @@ -12,3 +11,4 @@ T17773.hs:16:22: error: [GHC-88464] • Relevant bindings include monadPlusMplus :: Proxy x -> Proxy y -> Mzero x y :~: (x <|> y) (bound at T17773.hs:16:1) + ===================================== testsuite/tests/typecheck/should_fail/T2846b.stderr ===================================== @@ -1,10 +1,10 @@ - T2846b.hs:5:10: error: [GHC-91028] - • Couldn't match expected type ‘a1’ - with actual type ‘[Num a0 => a0]’ - Cannot instantiate unification variable ‘a1’ - with a type involving polytypes: [Num a0 => a0] + • Couldn't match expected type ‘a0’ + with actual type ‘[Num a1 => a1]’ + Cannot instantiate unification variable ‘a0’ + with a type involving polytypes: [Num a1 => a1] • In the first argument of ‘show’, namely ‘([1, 2, 3] :: [Num a => a])’ In the expression: show ([1, 2, 3] :: [Num a => a]) In an equation for ‘f’: f = show ([1, 2, 3] :: [Num a => a]) + ===================================== testsuite/tests/typecheck/should_fail/T7851.stderr ===================================== @@ -1,7 +1,6 @@ - T7851.hs:5:10: error: [GHC-83865] - • Couldn't match expected type: IO a0 - with actual type: a1 -> IO () + • Couldn't match expected type: IO a1 + with actual type: a0 -> IO () • Probable cause: ‘print’ is applied to too few arguments In a stmt of a 'do' block: print In the expression: @@ -11,3 +10,4 @@ T7851.hs:5:10: error: [GHC-83865] bar = do print print "Hello" + ===================================== testsuite/tests/typecheck/should_fail/T8603.stderr ===================================== @@ -2,9 +2,9 @@ T8603.hs:33:17: error: [GHC-18872] • Couldn't match kind ‘*’ with ‘* -> *’ When matching types m0 :: * -> * - [a2] :: * - Expected: [a2] -> StateT s RV a1 - Actual: t0 m0 (StateT s RV a1) + [a0] :: * + Expected: [a0] -> StateT s RV a2 + Actual: t0 m0 (StateT s RV a2) • The function ‘lift’ is applied to two visible arguments, but its type ‘(Control.Monad.Trans.Class.MonadTrans t, Monad m) => m a -> t m a’ View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7c714cafd41c42f19debb2fca76667… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7c714cafd41c42f19debb2fca76667… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/kill-SrcCodeOrigin] route the correct ExpectedFunTyCtxt SDoc. Add missing RecordUpdCtxt to errCtxtCtOrigin
by Apoorv Ingle (＠ani) 09 Mar '26

09 Mar '26

Apoorv Ingle pushed to branch wip/ani/kill-SrcCodeOrigin at Glasgow Haskell Compiler / GHC Commits: 427c26b4 by Apoorv Ingle at 2026-03-09T12:19:03-05:00 route the correct ExpectedFunTyCtxt SDoc. Add missing RecordUpdCtxt to errCtxtCtOrigin - - - - - 2 changed files: - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Zonk/TcType.hs Changes: ===================================== compiler/GHC/Tc/Types/Origin.hs ===================================== @@ -431,7 +431,7 @@ data CtOrigin | ProvCtxtOrigin -- The "provided" context of a pattern synonym signature (PatSynBind GhcRn GhcRn) -- Information about the pattern synonym, in -- particular the name and the right-hand side - | RecordUpdOrigin (LHsRecUpdFields GhcRn) + | RecordUpdOrigin | ViewPatOrigin -- | 'ScOrigin' is used only for the Wanted constraints for the @@ -623,7 +623,7 @@ exprCtOrigin (HsFunArr {}) = Shouldn'tHappenOrigin "function arrow" exprCtOrigin (ExplicitList {}) = ListOrigin exprCtOrigin (HsIf {}) = IfThenElseOrigin exprCtOrigin (HsProjection _ p) = RecordFieldProjectionOrigin (FieldLabelStrings $ fmap noLocA p) -exprCtOrigin (RecordUpd _ _ flds) = RecordUpdOrigin flds +exprCtOrigin (RecordUpd{}) = RecordUpdOrigin exprCtOrigin (HsGetField _ _ f) = GetFieldOrigin (fmap field_label $ dfoLabel (unLoc f)) exprCtOrigin (XExpr (ExpandedThingRn o _)) = errCtxtCtOrigin o exprCtOrigin (XExpr (HsRecSelRn f)) = OccurrenceOfRecSel $ L (getLoc $ foLabel f) (foExt f) @@ -639,6 +639,7 @@ errCtxtCtOrigin (FunAppCtxt (FunAppCtxtExpr _ e) _) = exprCtOrigin e errCtxtCtOrigin (StmtErrCtxt{}) = DoStmtOrigin errCtxtCtOrigin (DoStmtErrCtxt{}) = DoStmtOrigin errCtxtCtOrigin (StmtErrCtxtPat _ _ p) = DoPatOrigin p +errCtxtCtOrigin (RecordUpdCtxt{}) = RecordUpdOrigin errCtxtCtOrigin _ = Shouldn'tHappenOrigin "errCtxtCtOrigin" @@ -1168,8 +1169,8 @@ pprFixedRuntimeRepContext FRRBindStmtGuard = sep [ text "The body of the bind statement" ] pprFixedRuntimeRepContext (FRRArrow arrowContext) = pprFRRArrowContext arrowContext -pprFixedRuntimeRepContext (FRRExpectedFunTy funTyOrig _) - = pprExpectedFunTyHerald funTyOrig +pprFixedRuntimeRepContext (FRRExpectedFunTy funTyOrig i) + = pprExpectedFunTyCtxt funTyOrig i pprFixedRuntimeRepContext (FRRDeepSubsumption is_exp pos mb_fun) = hsep [ text "The", what, text "type of the" , ppr (Argument pos) ===================================== compiler/GHC/Tc/Zonk/TcType.hs ===================================== @@ -811,153 +811,19 @@ zonkTidyErrCtxtMsg env (ThetaCtxt ctxt theta_ty) = do zonkTidyErrCtxtMsg env (InferredTypeCtxt n ty) = do (env', ty') <- zonkTidyTcType env ty return $ (env', InferredTypeCtxt n ty') --- zonkTidyErrCtxtMsg (RecordUpdCtxt n1 n2 tys) = do --- tys' <- lift $ mapM zonkTcTypeToType tys --- return $ RecordUpdCtxt n1 n2 tys' zonkTidyErrCtxtMsg env (ClassOpCtxt n ty) = do (env', ty') <- zonkTidyTcType env ty return $ (env', ClassOpCtxt n ty') zonkTidyErrCtxtMsg env (MethSigCtxt n ty1 ty2) = do (env', ty1) <- zonkTidyTcType env ty1 - (env', ty2) <- zonkTidyTcType env ty2 + (env', ty2) <- zonkTidyTcType env' ty2 return $ (env', MethSigCtxt n ty1 ty2) --- zonkTidyErrCtxtMsg (PatSigErrCtxt ty exp_ty) = do --- ty' <- lift $ zonkTcTypeToType ty --- exp_ty' <- lift $ readExpType_maybe exp_ty --- case exp_ty' of --- Nothing -> error "zonkTidyErrCtxtMsg PatSingErrCtxt" --- Just exp_ty' -> do --- exp_ty' <- lift $ zonkTcTypeToType exp_ty' --- return $ PatSigErrCtxt ty' exp_ty' - zonkTidyErrCtxtMsg env e@(FunAppCtxt{}) = return (env, e) zonkTidyErrCtxtMsg env (FunTysCtxt ctxt ty i1 i2) = do (env', ty') <- zonkTidyTcType env ty return $ (env', FunTysCtxt ctxt ty' i1 i2) zonkTidyErrCtxtMsg env (FunResCtxt e i1 ty1 ty2 i2 i3) = do (env', ty1') <- zonkTidyTcType env ty1 - (env', ty2') <- zonkTidyTcType env ty2 + (env', ty2') <- zonkTidyTcType env' ty2 return $ (env', FunResCtxt e i1 ty1' ty2' i2 i3) zonkTidyErrCtxtMsg env p = return (env, p) -{- - -- or a type signature, or... (see 'Sig'). - | SigCtxt !(Sig GhcRn) - -- | In a user-written type signature. - | UserSigCtxt !UserTypeCtxt !UserSigType - - -- | In a pattern. - | PatCtxt !(Pat GhcRn) - -- | In a pattern synonym declaration. - | PatSynDeclCtxt !Name - -- | In a pattern matching context, e.g. a equation for a function binding, - -- or a case alternative, ... - | MatchCtxt !HsMatchContextRn - -- | In a match in a pattern matching context, - -- either for an expression or for an arrow command. - | forall body. (Outputable body) - => MatchInCtxt !(Match GhcRn body) - -- | In the declaration of a type constructor. - | TyConDeclCtxt !Name !(TyConFlavour TyCon) - -- | In a type or data family instance (or default instance). - | TyConInstCtxt !Name !TyConInstFlavour - -- | In the declaration of a data constructor. - | DataConDefCtxt !(NE.NonEmpty (LocatedN Name)) - -- | In the result type of a data constructor. - | DataConResTyCtxt !(NE.NonEmpty (LocatedN Name)) - -- | In the equations for a closed type family. - | ClosedFamEqnCtxt !TyCon - -- | In the expansion of a type synonym. - | TySynErrCtxt !TyCon - -- | In a role annotation. - | RoleAnnotErrCtxt !Name - -- | In an arrow command. - | CmdCtxt !(HsCmd GhcRn) - -- | In an instance declaration. - | InstDeclErrCtxt !(Either (LHsType GhcRn) PredType) - -- | In a default declaration. - | DefaultDeclErrCtxt { ddec_in_type_list :: !Bool } - -- | In the body of a static form. - | StaticFormCtxt !(LHsExpr GhcRn) - -- | In a pattern binding. - | forall p. OutputableBndrId p - => PatMonoBindsCtxt !(LPat (GhcPass p)) !(GRHSs GhcRn (LHsExpr GhcRn)) - -- | In a foreign import/export declaration. - | ForeignDeclCtxt !(ForeignDecl GhcRn) - -- | In a record field. - | FieldCtxt !FieldLabelString - -- | In a type. - | TypeCtxt !(LHsType GhcRn) - -- | In a kind. - | KindCtxt !(LHsKind GhcRn) - -- | In an ambiguity check. - | AmbiguityCheckCtxt !UserTypeCtxt !Bool - - -- | In a term-level use of a 'Name'. - | TermLevelUseCtxt !Name !TermLevelUseCtxt - - -- | When checking the type of the @main@ function. - | MainCtxt !Name - -- | Warning emitted when inferring use of visible dependent quantification. - | VDQWarningCtxt !TcTyCon - - -- | In a statement - | forall body. - ( Anno (StmtLR GhcRn GhcRn body) ~ SrcSpanAnnA - , Outputable body - ) => StmtErrCtxt !HsStmtContextRn !(StmtLR GhcRn GhcRn body) - - -- | In a do statement. - | DoStmtErrCtxt !HsStmtContextRn !(ExprLStmt GhcRn) - - -- | In patten of the do statement. (c.f. MonadFailErrors) - | StmtErrCtxtPat !HsStmtContextRn !(ExprLStmt GhcRn) (LPat GhcRn) - - -- | In an rebindable syntax expression. - | SyntaxNameCtxt !(HsExpr GhcRn) !CtOrigin !TcType !SrcSpan - -- | In a RULE. - | RuleCtxt !FastString - -- | In a subtype check. - | SubTypeCtxt !TcType !TcType - - -- | In an export. - | forall p. OutputableBndrId p - => ExportCtxt (IE (GhcPass p)) - -- | In an export of a pattern synonym. - | PatSynExportCtxt !PatSyn - -- | In an export of a pattern synonym record field. - | PatSynRecSelExportCtxt !PatSyn !Name - - -- | In an annotation. - | forall p. OutputableBndrId p - => AnnCtxt (AnnDecl (GhcPass p)) - - -- | In a specialise pragma. - | SpecPragmaCtxt !(Sig GhcRn) - - -- | In a deriving clause. - | DerivInstCtxt !PredType - -- | In a standalone deriving clause. - | StandaloneDerivCtxt !(LHsSigWcType GhcRn) - -- | When typechecking the body of a derived instance. - | DerivBindCtxt !Id !Class ![Type] - - -- | In an untyped Template Haskell quote. - | UntypedTHBracketCtxt !(HsQuote GhcPs) - -- | In a typed Template Haskell quote. - | forall p. OutputableBndrId p - => TypedTHBracketCtxt !(LHsExpr (GhcPass p)) - -- | In an untyped Template Haskell splice or quasi-quote. - | UntypedSpliceCtxt !(HsUntypedSplice GhcPs) - -- | In a typed Template Haskell splice. - | forall p. OutputableBndrId p - => TypedSpliceCtxt !(Maybe SplicePointName) !(HsTypedSplice (GhcPass p)) - -- | In the result of a typed Template Haskell splice. - | TypedSpliceResultCtxt !(LHsExpr GhcTc) - -- | In an argument to the Template Haskell @reifyInstances@ function. - | ReifyInstancesCtxt !TH.Name ![TH.Type] - - -- | While merging Backpack signatures. - | MergeSignaturesCtxt !UnitState !ModuleName ![InstantiatedModule] - -- | While checking that a module implements a Backpack signature. - | CheckImplementsCtxt !UnitState !Module !InstantiatedModule --} View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/427c26b4248a4abc92ef13f4f929eae… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/427c26b4248a4abc92ef13f4f929eae… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 6 commits: Apply NOINLINE pragmas to generated Typeable bindings
by Marge Bot (＠marge-bot) 09 Mar '26

09 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: e659610c by Duncan Coutts at 2026-03-09T12:08:35-04:00 Apply NOINLINE pragmas to generated Typeable bindings For context, see the existing Note [Grand plan for Typeable] and the Note [NOINLINE on generated Typeable bindings] added in the subsequent commit. This is about reducing the number of exported top level names and unfoldings, which reduces interface file sizes and reduces the number of global/dynamic linker symbols. Also accept the changed test output and metric decreases. Tests that record the phase output for type checking or for simplifier end up with different output: the generated bindings now have an Inline [~] annotation, and many top level names are now local rather than module-prefixed for export. Also accept the numerous metric decreases in compile_time/bytes allocated, and a few in compile_time/max_bytes_used. There's also one instance of a decrease in runtime/max_bytes_used but it's a ghci-way test and so presumably the reason is that it loads smaller .hi files and/or links fewer symbols. ------------------------- Metric Decrease: CoOpt_Singletons MultiLayerModulesTH_OneShot MultilineStringsPerf T10421 T10547 T12150 T12227 T12234 T12425 T13035 T13056 T13253 T13253-spj T15304 T15703 T16875 T17836b T17977b T18140 T18223 T18282 T18304 T18698a T18698b T18730 T18923 T20049 T21839c T24471 T24582 T24984 T3064 T4029 T5030 T5642 T5837 T6048 T9020 T9198 T9961 TcPlugin_RewritePerf WWRec hard_hole_fits mhu-perf ------------------------- - - - - - 67df5161 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Add documentation Note [NOINLINE on generated Typeable bindings] and refer to it from the code and existing documentation. - - - - - c4ad6167 by Duncan Coutts at 2026-03-09T12:08:35-04:00 Switch existing note to "named wrinkle" style, (GPT1)..(GPT7) GPT = Grand plan for Typeable - - - - - dc84f8e2 by Cheng Shao at 2026-03-09T12:09:21-04:00 ci: only build deb13 for validate pipeline aarch64-linux jobs This patch drops the redundant aarch64-linux deb12 job from validate pipelines and only keeps deb13; it's still built in nightly/release pipelines. Closes #27004. - - - - - fc2eac1a by Rajkumar Natarajan at 2026-03-09T12:41:07-04:00 chore: Merge GHC.Internal.TH.Quote into GHC.Internal.TH.Monad Move the QuasiQuoter datatype from GHC.Internal.TH.Quote to GHC.Internal.TH.Monad and delete the Quote module. Update submodule template-haskell-quasiquoter to use the merged upstream version that imports from the correct module. Co-authored-by: Cursor <cursoragent(a)cursor.com> - - - - - bf3db183 by Simon Jakobi at 2026-03-09T12:41:08-04:00 Add regression test for #16122 - - - - - 43 changed files: - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/Tc/Instance/Typeable.hs - libraries/ghc-boot-th/GHC/Boot/TH/Quote.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - − libraries/ghc-internal/src/GHC/Internal/TH/Quote.hs - libraries/template-haskell-quasiquoter - testsuite/tests/deSugar/should_compile/T16615.stderr - testsuite/tests/deSugar/should_compile/T2431.stderr - testsuite/tests/dmdanal/should_compile/T16029.stdout - testsuite/tests/linters/Makefile - testsuite/tests/numeric/should_compile/T14170.stdout - testsuite/tests/numeric/should_compile/T14465.stdout - testsuite/tests/numeric/should_compile/T7116.stdout - testsuite/tests/plugins/plugins10.stdout - testsuite/tests/quotes/QQError.stderr - testsuite/tests/roles/should_compile/Roles1.stderr - testsuite/tests/roles/should_compile/Roles13.stderr - testsuite/tests/roles/should_compile/Roles14.stderr - testsuite/tests/roles/should_compile/Roles2.stderr - testsuite/tests/roles/should_compile/Roles3.stderr - testsuite/tests/roles/should_compile/Roles4.stderr - testsuite/tests/roles/should_compile/T8958.stderr - testsuite/tests/simplCore/should_compile/OpaqueNoCastWW.stderr - + testsuite/tests/simplCore/should_compile/T16122.hs - + testsuite/tests/simplCore/should_compile/T16122.stderr - testsuite/tests/simplCore/should_compile/T3717.stderr - testsuite/tests/simplCore/should_compile/T3772.stdout - testsuite/tests/simplCore/should_compile/T4908.stderr - testsuite/tests/simplCore/should_compile/T4930.stderr - testsuite/tests/simplCore/should_compile/T7360.stderr - testsuite/tests/simplCore/should_compile/T8274.stdout - testsuite/tests/simplCore/should_compile/T9400.stderr - testsuite/tests/simplCore/should_compile/all.T - testsuite/tests/simplCore/should_compile/noinline01.stderr - testsuite/tests/simplCore/should_compile/par01.stderr - testsuite/tests/th/QQTopError.stderr - testsuite/tests/th/TH_Roles2.stderr - testsuite/tests/typecheck/should_compile/T13032.stderr - testsuite/tests/typecheck/should_compile/T18406b.stderr - testsuite/tests/typecheck/should_compile/T18529.stderr The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/0cf8aa0565e447f9bac3d889e26f29… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/0cf8aa0565e447f9bac3d889e26f29… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/advanceStackFrameLocation-segfault
by Matthew Pickering (＠mpickering) 09 Mar '26

09 Mar '26

Matthew Pickering pushed new branch wip/advanceStackFrameLocation-segfault at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/advanceStackFrameLocation-seg… You're receiving this email because of your account on gitlab.haskell.org.

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