[Git][ghc/ghc][wip/andreask/aarch64_reg_graph] 30 commits: compiler: Turn `FinderCache` into a record of operations so that GHC API clients can

Andreas Klebinger (@AndreasK) gitlab at gitlab.haskell.org
Mon Jul 8 10:09:12 UTC 2024 


Andreas Klebinger pushed to branch wip/andreask/aarch64_reg_graph at Glasgow Haskell Compiler / GHC


Commits:
0d170eaf by Zubin Duggal at 2024-07-04T11:08:41-04:00
compiler: Turn `FinderCache` into a record of operations so that GHC API clients can
have full control over how its state is managed by overriding `hsc_FC`.

Also removes the `uncacheModule` function as this wasn't being used by anything
since 1893ba12fe1fa2ade35a62c336594afcd569736e

Fixes #23604

- - - - -
4664997d by Teo Camarasu at 2024-07-04T11:09:18-04:00
Add HasCallStack to T23221

This makes the test a bit easier to debug

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66919dcc by Teo Camarasu at 2024-07-04T11:09:18-04:00
rts: use live words to estimate heap size

We use live words rather than live blocks to determine the size of the
heap for determining memory retention.

Most of the time these two metrics align, but they can come apart in
normal usage when using the nonmoving collector.

The nonmoving collector leads to a lot of partially occupied blocks. So,
using live words is more accurate.

They can also come apart when the heap is suffering from high levels
fragmentation caused by small pinned objects, but in this case, the
block size is the more accurate metric. Since this case is best avoided
anyway. It is ok to accept the trade-off that we might try (and
probably) fail to return more memory in this case.

See also the Note [Statistics for retaining memory]

Resolves #23397

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8dfca66a by Oleg Grenrus at 2024-07-04T11:09:55-04:00
Add reflections of GHC.TypeLits/Nats type families

-------------------------
Metric Increase:
    ghc_experimental_dir
    ghc_experimental_so
-------------------------

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6c469bd2 by Adam Gundry at 2024-07-04T11:10:33-04:00
Correct -Wpartial-fields warning to say "Definition" rather than "Use"

Fixes #24710.  The message and documentation for `-Wpartial-fields` were
misleading as (a) the warning occurs at definition sites rather than use
sites, and (b) the warning relates to the definition of a field independently
of the selector function (e.g. because record updates are also partial).

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977b6b64 by Max Ulidtko at 2024-07-04T11:11:11-04:00
GHCi: Support local Prelude

Fixes #10920, an issue where GHCi bails out when started alongside a
file named Prelude.hs or Prelude.lhs (even empty file suffices).

The in-source Note [GHCi and local Preludes] documents core reasoning.

Supplementary changes:

 * add debug traces for module lookups under -ddump-if-trace;
 * drop stale comment in GHC.Iface.Load;
 * reduce noise in -v3 traces from GHC.Utils.TmpFs;
 * new test, which also exercizes HomeModError.

- - - - -
87cf4111 by Ryan Scott at 2024-07-04T11:11:47-04:00
Add missing gParPat in cvtp's ViewP case

When converting a `ViewP` using `cvtp`, we need to ensure that the view pattern
is parenthesized so that the resulting code will parse correctly when
roundtripped back through GHC's parser.

Fixes #24894.

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b05613c5 by Adam Gundry at 2024-07-04T11:12:23-04:00
Use structured error representation for module cycle errors (see #18516)

This removes the re-export of cyclicModuleErr from the top-level GHC module.

- - - - -
70389749 by Adam Gundry at 2024-07-04T11:12:23-04:00
Use structured error representation when reloading a nonexistent module

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680ade3d by sheaf at 2024-07-04T11:12:23-04:00
Use structured errors for a Backpack instantiation error

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97c6d6de by sheaf at 2024-07-04T11:12:23-04:00
Move mkFileSrcSpan to GHC.Unit.Module.Location

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f9e7bd9b by Adriaan Leijnse at 2024-07-04T11:12:59-04:00
ttg: Remove SourceText from OverloadedLabel

Progress towards #21592

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00d63245 by Alexander Foremny at 2024-07-04T11:12:59-04:00
AST: GHC.Prelude -> Prelude

Refactor occurrences to GHC.Prelude with Prelude within
Language/Haskell.

Progress towards #21592

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cc846ea5 by Alexander Foremny at 2024-07-04T11:12:59-04:00
AST: remove occurrences of GHC.Unit.Module.ModuleName

`GHC.Unit.Module` re-exports `ModuleName` from
`Language.Haskell.Syntax.Module.Name`.

Progress towards #21592

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24c7d287 by Fabian Kirchner at 2024-07-04T11:12:59-04:00
AST: move Data instance definition for ModuleName to GHC.Unit.Types

To remove the dependency on GHC.Utils.Misc inside
Language.Haskell.Syntax.Module.Name, the instance definition is moved
from there into GHC.Unit.Types.

Progress towards #21592

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6cbba381 by Fabian Kirchner at 2024-07-04T11:12:59-04:00
AST: move negateOverLitVal into GHC.Hs.Lit

The function negateOverLitVal is not used within Language.Haskell and
therefore can be moved to the respective module inside GHC.Hs.

Progress towards #21592

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611aa7c6 by Fabian Kirchner at 2024-07-04T11:12:59-04:00
AST: move conDetailsArity into GHC.Rename.Module

The function conDetailsArity is only used inside GHC.Rename.Module.  We
therefore move it there from Language.Haskell.Syntax.Lit.

Progress towards #21592

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1b968d16 by Mauricio at 2024-07-04T11:12:59-04:00
AST: Remove GHC.Utils.Assert from GHC

Simple cleanup.

Progress towards #21592

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3d192e5d by Fabian Kirchner at 2024-07-04T11:12:59-04:00
ttg: extract Specificity, ForAllTyFlag and helper functions from GHC.Types.Var

Progress towards #21592

Specificity, ForAllTyFlag and its' helper functions are extracted from
GHC.Types.Var and moved into a new module Language.Haskell.Syntax.Specificity.

Note: Eventually (i.e. after Language.Haskell.Syntax.Decls does not depend on
GHC.* anymore) these should be moved into Language.Haskell.Syntax.Decls.
At this point, this would cause cyclic dependencies.

- - - - -
257d1adc by Adowrath at 2024-07-04T11:12:59-04:00
ttg: Split HsSrcBang, remove ref to DataCon from Syntax.Type

Progress towards #21592

This splits HsSrcBang up, creating the new HsBang within
`Language.Haskell.Syntax.Basic`. `HsBang` holds the unpackedness
and strictness information, while `HsSrcBang` only adds the SourceText
for usage within the compiler directly.

Inside the AST, to preserve the SourceText, it is hidden behind the
pre-existing extension point `XBindTy`. All other occurrences of
`HsSrcBang` were adapted to deconstruct the inner `HsBang`, and when
interacting with the `BindTy` constructor, the hidden `SourceText` is
extracted/inserted into the `XBindTy` extension point.

`GHC.Core.DataCon` exports both `HsSrcBang` and `HsBang` for
convenience. A constructor function `mkHsSrcBang` that takes all
individual components has been added.

Two exceptions has been made though:
- The `Outputable HsSrcBang` instance is replaced by
  `Outputable HsBang`. While being only GHC-internal, the only place
  it's used is in outputting `HsBangTy` constructors -- which already
  have `HsBang`. It wouldn't make sense to reconstruct a `HsSrcBang` just
  to ignore the `SourceText` anyway.
- The error `TcRnUnexpectedAnnotation` did not use the `SourceText`,
  so it too now only holds a `HsBang`.

- - - - -
24757fec by Mauricio at 2024-07-04T11:12:59-04:00
AST: Moved definitions that use GHC.Utils.Panic to GHC namespace

Progress towards #21592

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9be49379 by Mike Pilgrem at 2024-07-04T11:13:41-04:00
Fix #25032 Refer to Cabal's `includes` field, not `include-files`

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9e2ecf14 by Andrew Lelechenko at 2024-07-04T11:14:17-04:00
base: fix more missing changelog entries

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a82121b3 by Peter Trommler at 2024-07-04T11:14:53-04:00
X86 NCG: Fix argument promotion in foreign C calls

Promote 8 bit and 16 bit signed arguments by sign extension.

Fixes #25018

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fab13100 by Bryan Richter at 2024-07-04T11:15:29-04:00
Add .gitlab/README.md with creds instructions

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564981bd by Matthew Pickering at 2024-07-05T07:35:29-04:00
configure: Set LD_STAGE0 appropiately when 9.10.1 is used as a boot compiler

In 9.10.1 the "ld command" has been removed, so we fall back to using
the more precise "merge objects command" when it's available as
LD_STAGE0 is only used to set the object merging command in hadrian.

Fixes #24949

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a949c792 by Matthew Pickering at 2024-07-05T07:35:29-04:00
hadrian: Don't build ghci object files for ./hadrian/ghci target

There is some convoluted logic which determines whether we build ghci
object files are not. In any case, if you set `ghcDynPrograms = pure
False` then it forces them to be built.

Given we aren't ever building executables with this flavour it's fine
to leave `ghcDynPrograms` as the default and it should be a bit faster
to build less.

Also fixes #24949

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48bd8f8e by Matthew Pickering at 2024-07-05T07:36:06-04:00
hadrian: Remove STG dump from ticky_ghc flavour transformer

This adds 10-15 minutes to build time, it is a better strategy to
precisely enable dumps for the modules which show up prominently in a
ticky profile.

Given I am one of the only people regularly building ticky compilers I
think it's worthwhile to remove these.

Fixes #23635

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5b1aefb7 by Matthew Pickering at 2024-07-05T07:36:06-04:00
hadrian: Add dump_stg flavour transformer

This allows you to write `--flavour=default+ticky_ghc+dump_stg` if you
really want STG for all modules.

- - - - -
222c6336 by Andreas Klebinger at 2024-07-08T12:08:52+02:00
Fix -freg-graphs for FP and AARch64 NCG (#24941).

It seems we reserve 8 registers instead of four for global regs
based on the layout in Note [AArch64 Register assignments].

I'm not sure it's neccesary, but for now we just accept this state of
affairs and simple update -fregs-graph to account for this.

- - - - -


30 changed files:

- + .gitlab/README.md
- compiler/GHC.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/TyCo/Rep.hs-boot
- compiler/GHC/CoreToIface.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Lit.hs
- + compiler/GHC/Hs/Specificity.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Module.hs


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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bec54654999871492497ce42581c2419706bc075...222c6336f1517e1650721b940339e2e90129acc1

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