[Git][ghc/ghc][wip/int-index/deprecated-type-abstractions] 35 commits: Suppress duplicate librares linker warning of new macOS linker

Vladislav Zavialov (@int-index) gitlab at gitlab.haskell.org
Thu Nov 23 21:44:30 UTC 2023



Vladislav Zavialov pushed to branch wip/int-index/deprecated-type-abstractions at Glasgow Haskell Compiler / GHC


Commits:
e98051a5 by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
Suppress duplicate librares linker warning of new macOS linker

Fixes #24167

XCode 15 introduced a new linker which warns on duplicate libraries being
linked. To disable this warning, we pass -Wl,-no_warn_duplicate_libraries as
suggested by Brad King in CMake issue #25297.

This flag isn't necessarily available to other linkers on darwin, so we must
only configure it into the CC linker arguments if valid.

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c411c431 by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
testsuite: Encoding test witnesses recent iconv bug is fragile

A regression in the new iconv() distributed with XCode 15 and MacOS
Sonoma causes the test 'encoding004' to fail in the CP936 roundrip.

We mark this test as fragile until this is fixed upstream (rather than
broken, since previous versions of iconv pass the test)

See #24161

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ce7fe5a9 by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
testsuite: Update to LC_ALL=C no longer being ignored in darwin

MacOS seems to have fixed an issue where it used to ignore the variable
`LC_ALL` in program invocations and default to using Unicode.

Since the behaviour seems to be fixed to account for the locale
variable, we mark tests that were previously broken in spite of it as
fragile (since they now pass in recent macOS distributions)

See #24161

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e6c803f7 by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
darwin: Fix single_module is obsolete warning

In XCode 15's linker, -single_module is the default and otherwise
passing it as a flag results in a warning being raised:

    ld: warning: -single_module is obsolete

This patch fixes this warning by, at configure time, determining whether
the linker supports -single_module (which is likely false for all
non-darwin linkers, and true for darwin linkers in previous versions of
macOS), and using that information at runtime to decide to pass or not
the flag in the invocation.

Fixes #24168

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929ba2f9 by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
testsuite: Skip MultiLayerModulesTH_Make on darwin

The recent toolchain upgrade on darwin machines resulted in the
MultiLayerModulesTH_Make test metrics varying too much from the
baseline, ultimately blocking the CI pipelines.

This commit skips the test on darwin to temporarily avoid failures due
to the environment change in the runners. However, the metrics
divergence is being investigated still (tracked in #24177)

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af261ccd by Rodrigo Mesquita at 2023-11-15T13:18:58-05:00
configure: check target (not build) understands -no_compact_unwind

Previously, we were branching on whether the build system was darwin to
shortcut this check, but we really want to branch on whether the target
system (which is what we are configuring ld_prog for) is darwin.

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2125c176 by Luite Stegeman at 2023-11-15T13:19:38-05:00
JS: Fix missing variable declarations

The JStg IR update was missing some local variable declarations
that were present earlier, causing global variables to be used
implicitly (or an error in JavaScript strict mode).

This adds the local variable declarations again.

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99ced73b by Krzysztof Gogolewski at 2023-11-15T13:20:14-05:00
Remove loopy superclass solve mechanism

Programs with a -Wloopy-superclass-solve warning will now fail with an error.

Fixes #23017

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2aff2361 by Zubin Duggal at 2023-11-15T13:20:50-05:00
users-guide: Fix links to libraries from the users-guide.

The unit-ids generated in c1a3ecde720b3bddc2c8616daaa06ee324e602ab include the
package name, so we don't need to explicitly add it to the links.

Fixes #24151

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27981fac by Alan Zimmerman at 2023-11-15T13:21:25-05:00
EPA: splitLHsForAllTyInvis does not return ann

We did not use the annotations returned from splitLHsForAllTyInvis, so
do not return them.

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a6467834 by Krzysztof Gogolewski at 2023-11-15T22:22:59-05:00
Document defaulting of RuntimeReps

Fixes #24099

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2776920e by Simon Peyton Jones at 2023-11-15T22:23:35-05:00
Second fix to #24083

My earlier fix turns out to be too aggressive for data/type families

See wrinkle (DTV1) in Note [Disconnected type variables]

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cee81370 by Sylvain Henry at 2023-11-16T09:57:46-05:00
Fix unusable units and module reexport interaction (#21097)

This commit fixes an issue with ModUnusable introduced in df0f148feae.

In mkUnusableModuleNameProvidersMap we traverse the list of unusable
units and generate ModUnusable origin for all the modules they contain:
exposed modules, hidden modules, and also re-exported modules. To do
this we have a two-level map:

  ModuleName -> Unit:ModuleName (aka Module) -> ModuleOrigin

So for each module name "M" in broken unit "u" we have:
  "M" -> u:M -> ModUnusable reason

However in the case of module reexports we were using the *target*
module as a key. E.g. if "u:M" is a reexport for "X" from unit "o":
   "M" -> o:X -> ModUnusable reason

Case 1: suppose a reexport without module renaming (u:M -> o:M) from
unusable unit u:
   "M" -> o:M -> ModUnusable reason

Here it's claiming that the import of M is unusable because a reexport
from u is unusable. But if unit o isn't unusable we could also have in
the map:
   "M" -> o:M -> ModOrigin ...

Issue: the Semigroup instance of ModuleOrigin doesn't handle the case
(ModUnusable <> ModOrigin)

Case 2: similarly we could have 2 unusable units reexporting the same module
without renaming, say (u:M -> o:M) and (v:M -> o:M) with u and v
unusable. It gives:

  "M" -> o:M -> ModUnusable ... (for u)
  "M" -> o:M -> ModUnusable ... (for v)

Issue: the Semigroup instance of ModuleOrigin doesn't handle the case
(ModUnusable <> ModUnusable).

This led to #21097, #16996, #11050.

To fix this, in this commit we make ModUnusable track whether the module
used as key is a reexport or not (for better error messages) and we use
the re-export module as key. E.g. if "u:M" is a reexport for "o:X" and u
is unusable, we now record:

    "M" -> u:M -> ModUnusable reason reexported=True

So now, we have two cases for a reexport u:M -> o:X:
   - u unusable: "M" -> u:M -> ModUnusable ... reexported=True
   - u usable:   "M" -> o:X -> ModOrigin   ... reexportedFrom=u:M

The second case is indexed with o:X because in this case the Semigroup
instance of ModOrigin is used to combine valid expositions of a module
(directly or via reexports).

Note that module lookup functions select usable modules first (those who
have a ModOrigin value), so it doesn't matter if we add new ModUnusable
entries in the map like this:

  "M" -> {
    u:M -> ModUnusable ... reexported=True
    o:M -> ModOrigin ...
  }

The ModOrigin one will be used. Only if there is no ModOrigin or
ModHidden entry will the ModUnusable error be printed. See T21097 for an
example printing several reasons why an import is unusable.

- - - - -
3e606230 by Krzysztof Gogolewski at 2023-11-16T09:58:22-05:00
Fix IPE test

A helper function was defined in a different module than used.
To reproduce: ./hadrian/build test --test-root-dirs=testsuite/tests/rts/ipe

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49f5264b by Andreas Klebinger at 2023-11-16T20:52:11-05:00
Properly compute unpacked sizes for -funpack-small-strict-fields.

Use rep size rather than rep count to compute the size.

Fixes #22309

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b4f84e4b by James Henri Haydon at 2023-11-16T20:52:53-05:00
Explicit methods for Alternative Compose

Explicitly define some and many in Alternative instance for
Data.Functor.Compose

Implementation of https://github.com/haskell/core-libraries-committee/issues/181

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9bc0dd1f by Ignat Insarov at 2023-11-16T20:53:34-05:00
Add permutations for non-empty lists.

Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/68#issuecomment-1221409837

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5643ecf9 by Andrew Lelechenko at 2023-11-16T20:53:34-05:00
Update changelog and since annotations for Data.List.NonEmpty.permutations

Approved by CLC in https://github.com/haskell/core-libraries-committee/issues/68#issuecomment-1221409837

- - - - -
94ff2134 by Oleg Alexander at 2023-11-16T20:54:15-05:00
Update doc string for traceShow

Updated doc string for traceShow.

- - - - -
faff671a by Luite Stegeman at 2023-11-17T14:12:51+01:00
JS: clean up some foreign imports

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856e0a4e by Sven Tennie at 2023-11-18T06:54:11-05:00
AArch64: Remove unused instructions

As these aren't ever emitted, we don't even know if they work or will
ever be used. If one of them is needed in future, we may easily re-add
it.

Deleted instructions are:
- CMN
- ANDS
- BIC
- BICS
- EON
- ORN
- ROR
- TST
- STP
- LDP
- DMBSY

- - - - -
615441ef by Alan Zimmerman at 2023-11-18T06:54:46-05:00
EPA: Replace Monoid with NoAnn

Remove the final Monoid instances in the exact print infrastructure.

For Windows CI

Metric Decrease:
    T5205

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5a6c49d4 by David Feuer at 2023-11-20T18:53:18-05:00
Speed up stimes in instance Semigroup Endo

As discussed at
https://github.com/haskell/core-libraries-committee/issues/4

- - - - -
cf9da4b3 by Andrew Lelechenko at 2023-11-20T18:53:18-05:00
base: reflect latest changes in the changelog

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48bf364e by Alan Zimmerman at 2023-11-20T18:53:54-05:00
EPA: Use SrcSpan in EpaSpan

This is more natural, since we already need to deal with invalid
RealSrcSpans, and that is exactly what SrcSpan.UnhelpfulSpan is for.

Updates haddock submodule.

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97ec37cc by Sebastian Graf at 2023-11-20T18:54:31-05:00
Add regression test for #6070

Fixes #6070.

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e9d5ae41 by Owen Shepherd at 2023-11-21T18:32:23-05:00
chore: Correct typo in the gitlab MR template

[skip ci]

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f158a8d0 by Rodrigo Mesquita at 2023-11-21T18:32:59-05:00
Improve error message when reading invalid `.target` files

A `.target` file generated by ghc-toolchain or by configure can become
invalid if the target representation (`Toolchain.Target`) is changed
while the files are not re-generated by calling `./configure` or
`ghc-toolchain` again. There is also the issue of hadrian caching the
dependencies on `.target` files, which makes parsing fail when reading
reading the cached value if the representation has been updated.

This patch provides a better error message in both situations, moving
away from a terrible `Prelude.read: no parse` error that you would get
otherwise.

Fixes #24199

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955520c6 by Ben Gamari at 2023-11-21T18:33:34-05:00
users guide: Note that QuantifiedConstraints implies ExplicitForAll

Fixes #24025.

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17ec3e97 by Owen Shepherd at 2023-11-22T09:37:28+01:00
fix: Change type signatures in NonEmpty export comments to reflect reality

This fixes several typos in the comments of
Data.List.NonEmpty export list items.

- - - - -
2fd78f9f by Samuel Thibault at 2023-11-22T11:49:13-05:00
Fix the platform string for GNU/Hurd

As commited in Cargo
https://github.com/haskell/cabal/pull/9434
there is confusion between "gnu" and "hurd". This got fixed in Cargo, we
need the converse in Hadrian.

Fixes #24180

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a79960fe by Alan Zimmerman at 2023-11-22T11:49:48-05:00
EPA: Tuple Present no longer has annotation

The Present constructor for a Tuple argument will never have an exact
print annotation. So make this impossible.

- - - - -
121c9ab7 by David Binder at 2023-11-22T21:12:29-05:00
Unify the hpc testsuites

The hpc testsuite was split between testsuite/tests/hpc
and the submodule libraries/hpc/test. This commit unifies
the two testsuites in the GHC repository in the directory
testsuite/tests/hpc.

- - - - -
d2733a05 by Alan Zimmerman at 2023-11-22T21:13:05-05:00
EPA: empty tup_tail has noAnn

In Parser.y, the tup_tail rule had the following option
          | {- empty -} %shift   { return [Left noAnn] }

Once this works through PostProcess.hs, it means we add an extra
Missing constructor if the last item was a comma.

Change the annotation type to a Bool to indicate this, and use the
EpAnn Anchor for the print location for the others.

- - - - -
b7e8bdcb by Vladislav Zavialov at 2023-11-24T00:44:06+03:00
Add name for -Wdeprecated-type-abstractions (#24154)

This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wcompat.

- - - - -


30 changed files:

- .gitlab/merge_request_templates/Default.md
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/Iface/Errors/Ppr.hs
- compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Linker/Dynamic.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/TyCl/Instance.hs


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