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- Jun 06, 2023
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Josh Meredith authored
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- Jun 05, 2023
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The VarBind constructor of HsBind is only used at the GhcTc stage. This commit makes that explicit by setting the extension field of VarBind to be DataConCantHappen at all other stages. This allows us to delete a dead code path in GHC.HsToCore.Quote.rep_bind, and remove some panics.
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Matthew Pickering authored
These are in a separate commit as the improvement to these tests is the cumulative effect of the previous set of patches rather than just the responsibility of the last one in the patchset.
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Matthew Pickering authored
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Matthew Pickering authored
This allows `GHC.Driver.DynFlags` to depend on these types without depending on CoreM and hence the entire simplifier pipeline. We can also remove a hs-boot file with this change.
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Matthew Pickering authored
The hole fit plugins are defined in terms of TcM, a type we want to avoid depending on from `GHC.Tc.Errors.Types`. By moving it into its own module we can remove this dependency. It also simplifies the necessary boot file.
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Matthew Pickering authored
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Matthew Pickering authored
This removes edge from GHC.Hs.Pat to GHC.Driver.Session, which makes Language.Haskell.Syntax end up depending on GHC.Driver.Session.
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Matthew Pickering authored
This removes the usage of DynFlags from Tc.Utils.TcType so that it no longer depends on GHC.Driver.Session. In general we don't want anything which is a dependency of Language.Haskell.Syntax to depend on GHC.Driver.Session and removing this edge gets us closer to that goal.
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Matthew Pickering authored
The overall goal of this refactoring is to reduce the dependency footprint of the parser and syntax tree. Good reasons include: - Better module graph parallelisability - Make it easier to migrate error messages without introducing module loops - Philosophically, there's not reason for the AST to depend on half the compiler. One of the key edges which added this dependency was > GHC.Hs.Expr -> GHC.Tc.Types (TcLclEnv) As this in turn depending on TcM which depends on HscEnv and so on. Therefore the goal of this patch is to move `TcLclEnv` out of `GHC.Tc.Types` so that `GHC.Hs.Expr` can import TcLclEnv without incurring a huge dependency chain. The changes in this patch are: * Move TcLclEnv from GHC.Tc.Types to GHC.Tc.Types.LclEnv * Create new smaller modules for the types used in TcLclEnv New Modules: - GHC.Tc.Types.ErrCtxt - GHC.Tc.Types.BasicTypes - GHC.Tc.Types.TH - GHC.Tc.Types.LclEnv - GHC.Tc.Types.CtLocEnv - GHC.Tc.Errors.Types.PromotionErr Removed Boot File: - {-# SOURCE #-} GHC.Tc.Types * Introduce TcLclCtxt, the part of the TcLclEnv which doesn't participate in restoreLclEnv. * Replace TcLclEnv in CtLoc with specific CtLocEnv which is defined in GHC.Tc.Types.CtLocEnv. Use CtLocEnv in Implic and CtLoc to record the location of the implication and constraint. By splitting up TcLclEnv from GHC.Tc.Types we allow GHC.Hs.Expr to no longer depend on the TcM monad and all that entails. Fixes #23389 #23409
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- Jun 03, 2023
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Flag -ddisable-js-minimizer was producing invalid code. Fix that and also a few other things to generate nicer JS code for debugging. The added test checks that we don't regress when using the flag.
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For reasons similar to those described in Note [Depend on GHC.Num.Integer]. Fixes #23411.
- Jun 02, 2023
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It is no longer needed since Note [Extra dependencies from .hs-boot files] was deleted in 69987720. I've also added tildes to Note headers, otherwise they're not detected by the linter.
- Jun 01, 2023
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setTestOpts() is used to modify the test options for an entire .T file, rather than a single test. If there was a test using collect_compiler_stats, all of the tests in the same file had lint disabled. Fixes #21247
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As described in Note [The one-shot state monad trick], we shouldn't use derived Functor instances for monads using one-shot. This was done for most of them, but UM and RewriteM were missed.
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This refactors the panoply of renamer lookup functions relating to lookupExactOrOrig to more graciously handle Exact and Orig names. In particular, we avoid the situation in which we would add Exact/Orig GREs to the tcg_used_gres field, which could cause a panic in bestImport like in #23240. Fixes #23428
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GHC.Tc.Zonk.Type uses an equality constraint. ghc.nix currently provides 9.2.
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We don't need to explicitly specify the +ipe transformer to test IPE data since there are tests which manually enable IPE information. This commit does leave zstd IPE data compression enabled on the debian CI jobs.
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Add mention of IPE data compression to user's guide and the release notes for 9.8.1. Also note the impact compression has on binary size in both places. Change IpeBufferListNode compression check so only the value `1` indicates compression. See ticket #21766
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- Adds an IPE job to the CI pipeline which is triggered by the ~IPE label - Introduces CI logic to enable IPE data compression - Enables uncompressed IPE data on debug CI job - Regenerates jobs.yaml MR ci-images!112 on the images repository is meant to ensure that the proper images have libzstd-dev installed.
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Changes the configure script to indicate whether libnuma, libzstd, or libdw are being used as dependencies due to their optional features being enabled.
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Capacity of buffers allocated for decompressed IPE data was incorrect due to a misuse of the `ZSTD_findFrameCompressedSize` function. Fix by always storing decompressed size of IPE data in IPE buffer list nodes and using `ZSTD_findFrameCompressedSize` to determine the size of the compressed data. See ticket #21766
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Make sure byte order of written IPE buffer entries matches target. Make sure the IPE-related tests properly access the fields of IPE buffer entry nodes with the new IPE layout. This commit also introduces checks to avoid importing modules if IPE compression is not enabled. See ticket #21766.
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See ticket #21766
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Ensure that `HAVE_LIBZSTD` gets defined to either 0 or 1 in all cases and properly check that before IPE data decompression in the RTS. See ticket #21766.
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Reference ticket #21766 When IPE data compression is enabled, compress the emitted IPE buffer entries and decompress them in the RTS.
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Reference ticket #21766 Adds an `--enable-ipe-data-compreesion` flag to the configure script which will check for libzstd and set the appropriate flags to allow for IPE data compression in the compiler
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Reference ticket #21766 This commit restructures IPE buffer list entries to not contain references to their corresponding info tables. IPE buffer list nodes now point to two lists of equal length, one holding the list of info table pointers and one holding the corresponding entries for each info table. This will allow the entry data to be compressed without losing the references to the info tables.
- May 31, 2023
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This commit splits up the zonker into a few separate components, described in Note [The structure of the zonker] in `GHC.Tc.Zonk.Type`. 1. `GHC.Tc.Zonk.Monad` introduces a pared-down `TcM` monad, `ZonkM`, which has enough information for zonking types. This allows us to refactor `ErrCtxt` to use `ZonkM` instead of `TcM`, which guarantees we don't throw an error while reporting an error. 2. `GHC.Tc.Zonk.Env` is the new home of `ZonkEnv`, and also defines two zonking monad transformers, `ZonkT` and `ZonkBndrT`. `ZonkT` is a reader monad transformer over `ZonkEnv`. `ZonkBndrT m` is the codensity monad over `ZonkT m`. `ZonkBndrT` is used for computations that accumulate binders in the `ZonkEnv`. 3. `GHC.Tc.Zonk.TcType` contains the code for zonking types, for use in the typechecker. It uses the `ZonkM` monad. 4. `GHC.Tc.Zonk.Type` contains the code for final zonking to `Type`, which has been refactored to use `ZonkTcM = ZonkT TcM` and `ZonkBndrTcM = ZonkBndrT TcM`. Allocations slightly decrease on the whole due to using continuation-passing style instead of manual state passing of ZonkEnv in the final zonking to Type. ------------------------- Metric Decrease: T4029 T8095 T14766 T15304 hard_hole_fits RecordUpdPerf Metric Increase: T10421 -------------------------
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Per the new `Note [Linting linearity]`, we want optimisations over trying to preserve linearity. This will avoid preventing inlinings and reductions and make linear programs more efficient.