[Git][ghc/ghc][wip/only_job] 28 commits: javascript: Read fields of ObjectBlock lazily

Matthew Pickering (@mpickering) gitlab at gitlab.haskell.org
Fri Oct 11 10:18:25 UTC 2024



Matthew Pickering pushed to branch wip/only_job at Glasgow Haskell Compiler / GHC


Commits:
bf9c9566 by Matthew Pickering at 2024-10-07T13:19:30-04:00
javascript: Read fields of ObjectBlock lazily

When linking a module with a large dependency footprint too much of the
object files were forced during linking. This lead to a large amount of
memory taken up by thunks which would never be forced

On the PartialDownsweep test this halves the memory required (from 25G
to 13G).

Towards #25324

-------------------------
Metric Increase:
    size_hello_obj
-------------------------

- - - - -
571329df by Matthew Pickering at 2024-10-07T13:20:06-04:00
ci: Run the i386 validation job when i386 label is set

This is helpful when making changes to base and must update the
javascript and i386 base exports files.

- - - - -
e68f9aaf by Matthew Pickering at 2024-10-07T13:20:42-04:00
Rewrite partitionByWorkerSize to avoid pattern match checker bug

With `-g3` the pattern match checker would warn about these incomplete
patterns. This affects the debug_info builds on CI.

```
    Pattern match(es) are non-exhaustive
    In an equation for ‘go’:
        Patterns of type ‘[a]’, ‘[a]’, ‘[SpecFailWarning]’ not matched:
            (_:_) _ _
     |
2514 |         go [] small warnings = (small, warnings)
     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...
```

Workaround for #25338

- - - - -
d915dc8b by Arnaud Spiwack at 2024-10-07T19:23:00-04:00
Remove the wrapper/coercion-passing logic for submultiplicity checks

Instead, we use a dedicated DelayedError, which is emitted
systematically on submultiplicity checks, but is suppressed if we can
indeed solve the submultiplicity constraint with a reflexivity
coercion.

This way, we don't have to return anything from `tcSubMult`, which now
looks like a regular constraint check, the rest is implementation
detail. This removes all of the strange boilerplate that I'd been
struggling with under the previous implementation. Even if
submultiplicity checks are not properly constraints, this way it's
contained entirely within a `WantedConstraint`. Much more pleasant.

Closes #25128.

- - - - -
1d226116 by Sven Tennie at 2024-10-07T19:23:37-04:00
AArch64: Implement switch/jump tables (#19912)

This improves the performance of Cmm switch statements (compared to a
chain of if statements.)

- - - - -
3fe621dd by Mario Blažević at 2024-10-07T19:24:18-04:00
Fixes #25256, missing parens inside TH-printed pattern type signature

- - - - -
ea4b4391 by ARATA Mizuki at 2024-10-07T19:24:59-04:00
Better documentation for floatRange function

Closes #16479

- - - - -
ff09205c by Andreas Klebinger at 2024-10-07T19:25:35-04:00
Adjust progress message for hadrian to include cwd.

Fixes #25335

- - - - -
5fd320da by Sven Tennie at 2024-10-07T19:26:12-04:00
CCallConv test: Align argument types

The C calling convention / standard requires that arguments and their
values are of the same type.

- - - - -
c6e5fd3d by Cheng Shao at 2024-10-07T19:26:47-04:00
hadrian: remove unused ghciWithDebugger field from flavour config

This patch removes the ghciWithDebugger field from flavour config
since it's actually not used anywhere.

- - - - -
9c9c790d by sheaf at 2024-10-07T19:27:23-04:00
user's guide: update docs for X86 CPU flags

This commit updates the section of the user's guide pertaining to
X86 feature flags with the following changes:

  - the NCG backend now supports SIMD, so remove all text
    that says the contrary,
  - the LLVM backend does not "automatically detect" features,
    so remove any text that makes that claim.

- - - - -
a1ecc826 by Sven Tennie at 2024-10-08T13:36:03-04:00
ci: RISCV64 cross-compile testing

This adds a validation job which tests that we can build a riscv64 cross
compiler and build a simple program using it. We do not currently run
the whole testsuite.

Towards #25254

Co-authored-by: Matthew Pickering <matthewtpickering at gmail.com>

- - - - -
d5c2577f by Arnaud Spiwack at 2024-10-08T13:36:44-04:00
Remove unused accumulators in partition_errors

- - - - -
55609880 by Andrzej Rybczak at 2024-10-09T16:41:46-04:00
Fix typo in the @since annotation of annotateIO

- - - - -
ef481813 by Alan Zimmerman at 2024-10-09T16:42:23-04:00
EPA: Remove [AddEpAnn] from (most of) HsExpr

EPA: introduce EpAnnLam for lambda annotationsi, and remove `glAA`
from `Parser.y`, it is the same as `glR`

EPA: Remove unused annotation from XOpApp

EPA: Use EpToken for XNPat and XNegApp

EPA: specific anns for XExplicitTuple / XTuplePat / sumPatParens.

EPA: Use specific annotation for MultiIf

EPA: Move annotations into FunRhs

EPA: Remove [AddEpAnn] from SigPat and ExprWithTySig

EPA: Remove [AddEpAnn] from ArithSeq

EPA: Remove [AddEpAnn] from HsProc

EPA: Remove [AddEpAnn] from HsStatic

EPA: Remove [AddEpAnn] from BindStmt

EPA: Remove [AddEpAnn] from TransStmt

EPA: Remove [AddEpAnn] from HsTypedSplice

EPA: Remove [AddEpAnn] from HsUntypedSpliceExpr

- - - - -
69960230 by Fabian Thorand at 2024-10-10T19:03:59+00:00
Handle exceptions from IO manager backend

If an IO manager backend throws, it will not actually have registered
the file descriptor. However, at that point, the IO manager state was
already updated to assume the file descriptor is being tracked, leading
to errors and an eventual deadlock down the line as documented in the
issue #21969.

The fix for this is to undo the IO manager state change in case the
backend throws (just as we already do when the backend signals that the
file type is not supported). The exception then bubbles up to user code.

That way we make sure that
1. the bookkeeping state of the IO manager is consistent with the
   actions taken by the backend, even in the presence of unexpected
   failures, and
2. the error is not silent and visible to user code, making failures
   easier to debug.

- - - - -
1587cccf by Hassan Al-Awwadi at 2024-10-11T03:52:36-04:00
Put RdrName in the foExt field of FieldOcc

The main purpose of this commit is to rip RdrName out of FieldOcc, in
accordance with #21592, and as a side note it has simplified the method
we use to deal with ambiguity somewhat.

To do the first, we make FieldOccs store (LIdP p) instead of always
storing Located RdrName, and moved the readername to the extension
points where necessary.

For the second, well, we just turn an ambiguous RdrName into a unbound
Name through mkUnboundName. Later during disambiguateRecordBinds of the
type checking phase, we will try and do type-directed disambiguation based
on the rdrName field (for now), so this hack works out fine.

See Note [Ambiguous FieldOcc in record updates] for more details.

There are two additional minor changes in this commit:
*  The HsRecSel constructor of HsExpr has been moved to the extension
constuctors, since its really GHC specific.
*  HsProjection no longer has a Located DotFieldOcc as a field, but just a
regular DotFieldOcc, since DotFieldOcc already wraps a located
FieldLabelString

co-authored by: @Jade       <Jade512 at proton.me>
                @alt-romes  <rodrigo.m.mesquita at gmail.com>

- - - - -
2338a971 by Cheng Shao at 2024-10-11T03:53:13-04:00
driver: bail out when -fllvm is passed to GHC not configured with LLVM

This patch makes GHC bail out with an proper error message when it's
not configured with LLVM but users attempt to pass -fllvm, see #25011
and added comment for details.

Fixes #25011

Co-authored-by: Rodrigo Mesquita <rodrigo.m.mesquita at gmail.com>

- - - - -
78ad81ec by Cristiano Moraes at 2024-10-11T03:53:55-04:00
configure: Find C++ probing when GCC version is the latest but G++ is old #23118
- - - - -
083703a1 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Consider Wanteds with rewriters as insoluble

This MR fixes #25325

See GHC.Tc.Types.Constraint, Note [Insoluble Wanteds], especially (IW2)

There is a small change in the error message for T14172, but it looks
entirely acceptable to me.

- - - - -
0dfaeb66 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Wibbles

- - - - -
09d24d82 by Simon Peyton Jones at 2024-10-11T03:54:32-04:00
Spelling errors

- - - - -
694489ed by sheaf at 2024-10-11T03:55:14-04:00
LLVM: use sse4.2 instead of sse42

LLVM expects the former instead of the latter since version 3.4.

Fixes #25019

- - - - -
06ae8507 by sheaf at 2024-10-11T03:55:14-04:00
LLVM: make SSE4.2 imply +popcnt

For consistency with the NCG as well as with Clang and GCC, we make
the SSE4.2 feature flag imply +popcnt when using the LLVM backend.

Fixes #25353

- - - - -
3fe843c7 by Cheng Shao at 2024-10-11T03:55:50-04:00
Drop obsolete libffi Makefile

This patch drops obsolete libffi Makefile from the tree, given it's
completely unused since removal of make build system in !7094.

- - - - -
df70405c by Ben Gamari at 2024-10-11T03:56:26-04:00
ghc-internal: Fix incomplete matches on IOError

As noted in #25362, these incomplete matches were previously not being
warned about. They were easily addressed by use of
`GHC.Internal.Event.Windows.withException`.

Closes #25362.

- - - - -
8584504b by Matthew Pickering at 2024-10-11T03:57:02-04:00
compiler: Fix orientation of GHC.Hs.Doc boot file

We should be free to import things from Language.Haskell.Syntax in GHC
modules. Therefore the the boot file for the loop between ImpExp and
GHC.Hs.Doc was in the wrong place.

Issue #21592

- - - - -
cca59600 by Matthew Pickering at 2024-10-11T11:17:27+01:00
ci: Add support for ONLY_JOBS variable to trigger any validation pipeline

By setting the ONLY_JOBS variable to the name of the job (or multiple
jobs), the resulting
pipeline will include a validation job for that pipeline.

For example - if you set ONLY_JOBS="x86_64-linux-ubuntu22_04-validate"
then a ubuntu22_04 job will be included in the validation pipeline. This
is useful for testing specific jobs.

Fixes #25332

- - - - -


29 changed files:

- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Hs/Binds.hs
- + compiler/GHC/Hs/Doc.hs-boot
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Extension.hs
- compiler/GHC/Hs/Instances.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/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Docs.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/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/653f25bd90528f614e115a1d9de830afaa52d8bb...cca59600f31f2b3e59bd5f8eeca99901a879d007

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