[Git][ghc/ghc][wip/simplifier-tweaks] 26 commits: Memory usage fixes for Haddock

Simon Peyton Jones (@simonpj) gitlab at gitlab.haskell.org
Wed Jun 28 16:07:06 UTC 2023 


Simon Peyton Jones pushed to branch wip/simplifier-tweaks at Glasgow Haskell Compiler / GHC


Commits:
3d1d42b7 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Memory usage fixes for Haddock

- Do not include `mi_globals` in the `NoBackend` backend. It was only included
  for Haddock, but Haddock does not actually need it. This causes a 200MB
  reduction in max residency when generating haddocks on the Agda codebase
  (roughly 1GB to 800MB).

- Make haddock_{parser,renamer}_perf tests more accurate by forcing docs to
  be written to interface files using `-fwrite-interface`

Bumps haddock submodule.

Metric Decrease:
    haddock.base

- - - - -
8185b1c2 by Finley McIlwaine at 2023-06-21T12:04:58-04:00
Fix associated data family doc structure items

Associated data families were being given their own export DocStructureItems,
which resulted in them being documented separately from their classes in
haddocks. This commit fixes it.

- - - - -
4d356ea3 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: implement TH support

- Add ghc-interp.js bootstrap script for the JS interpreter
- Interactively link and execute iserv code from the ghci package
- Incrementally load and run JS code for splices into the running iserv

Co-authored-by: Luite Stegeman <stegeman at gmail.com>

- - - - -
3249cf12 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Don't use getKey

- - - - -
f84ff161 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Stg: return imported FVs

This is used to determine what to link when using the interpreter.
For now it's only used by the JS interpreter but it could easily be used
by the native interpreter too (instead of extracting names from compiled BCOs).

- - - - -
fab2ad23 by Sylvain Henry at 2023-06-21T12:04:59-04:00
Fix some recompilation avoidance tests

- - - - -
a897dc13 by Sylvain Henry at 2023-06-21T12:04:59-04:00
TH_import_loop is now broken as expected

- - - - -
dbb4ad51 by Sylvain Henry at 2023-06-21T12:04:59-04:00
JS: always recompile when TH is enabled (cf #23013)

- - - - -
711b1d24 by Bartłomiej Cieślar at 2023-06-21T12:59:27-04:00
Add support for deprecating exported items (proposal #134)

This is an implementation of the deprecated exports proposal #134.
The proposal introduces an ability to introduce warnings to exports.
This allows for deprecating a name only when it is exported from a specific
module, rather than always depreacting its usage. In this example:

    module A ({-# DEPRECATED "do not use" #-} x) where
    x = undefined
    ---
    module B where
    import A(x)

`x` will emit a warning when it is explicitly imported.

Like the declaration warnings, export warnings are first accumulated within
the `Warnings` struct, then passed into the ModIface, from which they are
then looked up and warned about in the importing module in the `lookup_ie`
helpers of the `filterImports` function (for the explicitly imported names)
and in the `addUsedGRE(s)` functions where they warn about regular usages
of the imported name.

In terms of the AST information, the custom warning is stored in the
extension field of the variants of the `IE` type (see Trees that Grow for
more information).

The commit includes a bump to the haddock submodule added in MR #28

Signed-off-by: Bartłomiej Cieślar <bcieslar2001 at gmail.com>

- - - - -
c1865854 by Ben Gamari at 2023-06-21T12:59:30-04:00
configure: Bump version to 9.8

Bumps Haddock submodule

- - - - -
4e1de71c by Ben Gamari at 2023-06-21T21:07:48-04:00
configure: Bump version to 9.9

Bumps haddock submodule.

- - - - -
5b6612bc by Ben Gamari at 2023-06-23T03:56:49-04:00
rts: Work around missing prototypes errors

Darwin's toolchain inexpliciably claims that `write_barrier` and friends
have declarations without prototypes, despite the fact that (a) they are
definitions, and (b) the prototypes appear only a few lines above. Work
around this by making the definitions proper prototypes.

- - - - -
43b66a13 by Matthew Pickering at 2023-06-23T03:57:26-04:00
ghcup-metadata: Fix date modifier (M = minutes, m = month)

Fixes #23552

- - - - -
564164ef by Luite Stegeman at 2023-06-24T10:27:29+09:00
Support large stack frames/offsets in GHCi bytecode interpreter

Bytecode instructions like PUSH_L (push a local variable) contain
an operand that refers to the stack slot. Before this patch, the
operand type was SmallOp (Word16), limiting the maximum stack
offset to 65535 words. This could cause compiler panics in some
cases (See #22888).

This patch changes the operand type for stack offsets from
SmallOp to Op, removing the stack offset limit.

Fixes #22888

- - - - -
8d6574bc by Sylvain Henry at 2023-06-26T13:15:06-04:00
JS: support levity-polymorphic datatypes (#22360,#22291)

- thread knowledge about levity into PrimRep instead of panicking
- JS: remove assumption that unlifted heap objects are rts objects (TVar#, etc.)

Doing this also fixes #22291 (test added).

There is a small performance hit (~1% more allocations).

Metric Increase:
    T18698a
    T18698b

- - - - -
5578bbad by Matthew Pickering at 2023-06-26T13:15:43-04:00
MR Review Template: Mention "Blocked on Review" label

In order to improve our MR review processes we now have the label
"Blocked on Review" which allows people to signal that a MR is waiting
on a review to happen.

See: https://mail.haskell.org/pipermail/ghc-devs/2023-June/021255.html

- - - - -
4427e9cf by Matthew Pickering at 2023-06-26T13:15:43-04:00
Move MR template to Default.md

This makes it more obvious what you have to modify to affect the default
template rather than looking in the project settings.

- - - - -
522bd584 by Arnaud Spiwack at 2023-06-26T13:16:33-04:00
Revert "Avoid desugaring non-recursive lets into recursive lets"

This (temporary) reverts commit 3e80c2b40213bebe302b1bd239af48b33f1b30ef.

Fixes #23550

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c59fbb0b by Torsten Schmits at 2023-06-26T19:34:20+02:00
Propagate breakpoint information when inlining across modules

Tracking ticket: #23394

MR: !10448

* Add constructor `IfaceBreakpoint` to `IfaceTickish`
* Store breakpoint data in interface files
* Store `BreakArray` for the breakpoint's module, not the current module, in BCOs
* Store module name in BCOs instead of `Unique`, since the `Unique` from an `Iface` doesn't match the modules in GHCi's
  state
* Allocate module name in `ModBreaks`, like `BreakArray`
* Lookup breakpoint by module name in GHCi
* Skip creating breakpoint instructions when no `ModBreaks` are available, rather than injecting `ModBreaks` in the
  linker when breakpoints are enabled, and panicking when `ModBreaks` is missing

- - - - -
6f904808 by Greg Steuck at 2023-06-27T16:53:07-04:00
Remove undefined FP_PROG_LD_BUILD_ID from configure.ac's

- - - - -
e89aa072 by Andrei Borzenkov at 2023-06-27T16:53:44-04:00
Remove arity inference in type declarations (#23514)

Arity inference in type declarations was introduced
as a workaround for the lack of @k-binders.

They were added in 4aea0a72040, so I simplified all
of this by simply removing arity inference altogether.

This is part of GHC Proposal #425 "Invisible binders in type
declarations".

- - - - -
459dee1b by Torsten Schmits at 2023-06-27T16:54:20-04:00
Relax defaulting of RuntimeRep/Levity when printing

Fixes #16468

MR: !10702

Only default RuntimeRep to LiftedRep when variables are bound by the toplevel forall

- - - - -
151f8f18 by Torsten Schmits at 2023-06-27T16:54:57-04:00
Remove duplicate link label in linear types docs

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cca1179e by Simon Peyton Jones at 2023-06-28T17:06:57+01:00
Inline more, sooner

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3dda3a5f by Simon Peyton Jones at 2023-06-28T17:06:57+01:00
One more Simplifier optimistaions

Inline in exprIsConAppMaybe

- - - - -
a69cd79b by Simon Peyton Jones at 2023-06-28T17:06:57+01:00
Further improvements

- - - - -


30 changed files:

- .gitlab-ci.yml
- .gitlab/merge_request_templates/merge-request.md → .gitlab/merge_request_templates/Default.md
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/Core/FVs.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Map/Expr.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Monad.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/Subst.hs
- compiler/GHC/Core/Tidy.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6674f1dbcafa392f9ae0b3505923900b73e0cad2...a69cd79b441aa581c33daee1d6c5af3e2a8cb6a3

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6674f1dbcafa392f9ae0b3505923900b73e0cad2...a69cd79b441aa581c33daee1d6c5af3e2a8cb6a3
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