[Git][ghc/ghc][wip/andreask/arm_mem_model] 45 commits: testsuite: Rename isCross() predicate to needsTargetWrapper()

Andreas Klebinger (@AndreasK) gitlab at gitlab.haskell.org
Mon Apr 29 13:51:07 UTC 2024



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


Commits:
5eaa46e7 by Matthew Pickering at 2024-04-19T02:14:55-04:00
testsuite: Rename isCross() predicate to needsTargetWrapper()

isCross() was a misnamed because it assumed that all cross targets would
provide a target wrapper, but the two most common cross targets
(javascript, wasm) don't need a target wrapper.

Therefore we rename this predicate to `needsTargetWrapper()` so
situations in the testsuite where we can check whether running
executables requires a target wrapper or not.

- - - - -
55a9d699 by Simon Peyton Jones at 2024-04-19T02:15:32-04:00
Do not float HNFs out of lambdas

This MR adjusts SetLevels so that it is less eager to float a
HNF (lambda or constructor application) out of a lambda, unless
it gets to top level.

Data suggests that this change is a small net win:
 * nofib bytes-allocated falls by -0.09% (but a couple go up)
 * perf/should_compile bytes-allocated falls by -0.5%
 * perf/should_run bytes-allocated falls by -0.1%
See !12410 for more detail.

When fiddling elsewhere, I also found that this patch had a huge
positive effect on the (very delicate) test
  perf/should_run/T21839r
But that improvement doesn't show up in this MR by itself.

Metric Decrease:
    MultiLayerModulesRecomp
    T15703
    parsing001

- - - - -
f0701585 by Alan Zimmerman at 2024-04-19T02:16:08-04:00
EPA: Fix comments in mkListSyntaxTy0

Also extend the test to confirm.

Addresses #24669, 1 of 4

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b01c01d4 by Serge S. Gulin at 2024-04-19T02:16:51-04:00
JS: set image `x86_64-linux-deb11-emsdk-closure` for build

- - - - -
c90c6039 by Alan Zimmerman at 2024-04-19T02:17:27-04:00
EPA: Provide correct span for PatBind

And remove unused parameter in checkPatBind

Contributes to #24669

- - - - -
26036f96 by Alan Zimmerman at 2024-04-19T13:11:08-04:00
EPA: Fix span for PatBuilderAppType

Include the location of the prefix @ in the span for InVisPat.

Also removes unnecessary annotations from HsTP.

Contributes to #24669

- - - - -
dba03aab by Matthew Craven at 2024-04-19T13:11:44-04:00
testsuite: Give the pre_cmd for mhu-perf more time

- - - - -
d31fbf6c by Krzysztof Gogolewski at 2024-04-19T21:04:09-04:00
Fix quantification order for a `op` b and a %m -> b

Fixes #23764

Implements https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0640-tyop-quantification-order.rst

Updates haddock submodule.

- - - - -
385cd1c4 by Sebastian Graf at 2024-04-19T21:04:45-04:00
Make `seq#` a magic Id and inline it in CorePrep (#24124)

We can save much code and explanation in Tag Inference and StgToCmm by making
`seq#` a known-key Magic Id in `GHC.Internal.IO` and inline this definition in
CorePrep. See the updated `Note [seq# magic]`.
I also implemented a new `Note [Flatten case-bind]` to get better code for
otherwise nested case scrutinees.

I renamed the contructors of `ArgInfo` to use an `AI` prefix in order to
resolve the clash between `type CpeApp = CoreExpr` and the data constructor of
`ArgInfo`, as well as fixed typos in `Note [CorePrep invariants]`.

Fixes #24252 and #24124.

- - - - -
275e41a9 by Jade at 2024-04-20T11:10:40-04:00
Put the newline after errors instead of before them

This mainly has consequences for GHCi but also slightly alters how the
output of GHC on the commandline looks.

Fixes: #22499

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dd339c7a by Teo Camarasu at 2024-04-20T11:11:16-04:00
Remove unecessary stage0 packages

Historically quite a few packages had to be stage0 as they depended on
`template-haskell` and that was stage0. In #23536 we made it so that was
no longer the case. This allows us to remove a bunch of packages from
this list.

A few still remain. A new version of `Win32` is required by
`semaphore-compat`. Including `Win32` in the stage0 set requires also
including `filepath` because otherwise Hadrian's dependency logic gets
confused. Once our boot compiler has a newer version of `Win32` all of
these will be able to be dropped.

Resolves #24652

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2f8e3a25 by Alan Zimmerman at 2024-04-20T11:11:52-04:00
EPA: Avoid duplicated comments in splice decls

Contributes to #24669

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c70b9ddb by Serge S. Gulin at 2024-04-21T16:33:43+03:00
JS: fix typos and namings (fixes #24602)

You may noted that I've also changed term of

```
, global "h$vt_double" ||= toJExpr IntV
```

See "IntV"

and

```
  WaitReadOp  -> \[] [fd] -> pure $ PRPrimCall $ returnS (app
"h$waidRead" [fd])
```

See "h$waidRead"

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3db54f9b by Serge S. Gulin at 2024-04-21T16:33:43+03:00
JS: trivial checks for variable presence (fixes #24602)

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777f108f by Serge S. Gulin at 2024-04-21T16:33:43+03:00
JS: fs module imported twice (by emscripten and by ghc-internal). ghc-internal import wrapped
in a closure to prevent conflict with emscripten (fixes #24602)

Better solution is to use some JavaScript module system like AMD, CommonJS or even UMD. It will be investigated at other issues.
At first glance we should try UMD (See https://github.com/umdjs/umd)

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a45a5712 by Serge S. Gulin at 2024-04-21T16:33:43+03:00
JS: thread.js requires h$fds and h$fdReady to be declared for static code analysis, minimal
code copied from GHCJS (fixes #24602)

I've just copied some old pieces of GHCJS from publicly available sources (See https://github.com/Taneb/shims/blob/a6dd0202dcdb86ad63201495b8b5d9763483eb35/src/io.js#L607).
Also I didn't put details to h$fds. I took minimal and left only its object initialization: `var h$fds = {};`

- - - - -
ad90bf12 by Serge S. Gulin at 2024-04-21T16:33:43+03:00
JS: heap and stack overflows reporting defined as js hard failure (fixes #24602)

These errors were treated as a hard failure for browser application. The fix is trivial: just throw error.

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5962fa52 by Serge S. Gulin at 2024-04-21T16:33:44+03:00
JS: Stubs for code without actual implementation detected by Google Closure Compiler (fixes #24602)

These errors were fixed just by introducing stubbed functions with throw for further implementation.

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a0694298 by Serge S. Gulin at 2024-04-21T16:34:07+03:00
JS: Add externs to linker (fixes #24602)

After enabling jsdoc and built-in google closure compiler types I was needed to deal with the following:

1. Define NodeJS-environment types. I've just copied minimal set of externs from semi-official repo (see https://github.com/externs/nodejs/blob/6c6882c73efcdceecf42e7ba11f1e3e5c9c041f0/v8/nodejs.js#L8).
2. Define Emscripten-environment types: `HEAP8`. Emscripten already provides some externs in our code but it supposed to be run in some module system. And its definitions do not work well in plain bundle.
3. We have some functions which purpose is to add to functions some contextual information via function properties. These functions should be marked as `modifies` to let google closure compiler remove calls if these functions are not used actually by call graph. Such functions are: `h$o`, `h$sti`, `h$init_closure`, `h$setObjInfo`.
4. STG primitives such as registries and stuff from `GHC.StgToJS`. `dXX` properties were already present at externs generator function but they are started from `7`, not from `1`. This message is related: `// fixme does closure compiler bite us here?`

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e58bb29f by Serge S. Gulin at 2024-04-21T16:34:07+03:00
JS: added both tests: for size and for correctness (fixes #24602)

By some reason MacOS builds add to stderr messages like:

    Ignoring unexpected archive entry:
    __.SYMDEF
    ...

However I left stderr to `/dev/null` for compatibility with linux CI builds.

- - - - -
909f3a9c by Serge S. Gulin at 2024-04-21T16:34:07+03:00
JS: Disable js linker warning for empty symbol table to make js tests running consistent across environments

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83eb10da by Serge S. Gulin at 2024-04-21T16:34:07+03:00
JS: Add special preprocessor for js files due of needing to keep jsdoc comments (fixes #24602)

Our js files have defined google closure compiler types at jsdoc entries but these jsdoc entries are removed by cpp preprocessor. I considered that reusing them in javascript-backend would be a nice thing. Right now haskell processor uses `-traditional` option to deal with comments and `//` operators.
But now there are following compiler options: `-C` and `-CC`.
You can read about them at GCC (see https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html#index-CC) and CLang (see https://clang.llvm.org/docs/ClangCommandLineReference.html#cmdoption-clang-CC).
It seems that `-CC` works better for javascript jsdoc than `-traditional`.
At least it leaves `/* ... */` comments w/o changes.

- - - - -
e1cf8dc2 by brandon s allbery kf8nh at 2024-04-22T03:48:26-04:00
fix link in CODEOWNERS

It seems that our local Gitlab no longer has documentation for the
`CODEOWNERS` file, but the master documentation still does. Use
that instead.

- - - - -
593f4e04 by Fendor at 2024-04-23T10:19:14-04:00
Add performance regression test for '-fwrite-simplified-core'

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1ba39b05 by Fendor at 2024-04-23T10:19:14-04:00
Typecheck corebindings lazily during bytecode generation

This delays typechecking the corebindings until the bytecode generation
happens.

We also avoid allocating a thunk that is retained by `unsafeInterleaveIO`.
In general, we shouldn't retain values of the hydrated `Type`, as not evaluating
the bytecode object keeps it alive.

It is better if we retain the unhydrated `IfaceType`.

See Note [Hydrating Modules]

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e916fc92 by Alan Zimmerman at 2024-04-23T10:19:50-04:00
EPA: Keep comments in a CaseAlt match

The comments now live in the surrounding location, not inside the
Match. Make sure we keep them.

Closes #24707

- - - - -
d2b17f32 by Cheng Shao at 2024-04-23T15:01:22-04:00
driver: force merge objects when building dynamic objects

This patch forces the driver to always merge objects when building
dynamic objects even when ar -L is supported. It is an oversight of
!8887: original rationale of that patch is favoring the relatively
cheap ar -L operation over object merging when ar -L is supported,
which makes sense but only if we are building static objects! Omitting
check for whether we are building dynamic objects will result in
broken .so files with undefined reference errors at executable link
time when building GHC with llvm-ar. Fixes #22210.

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209d09f5 by Julian Ospald at 2024-04-23T15:02:03-04:00
Allow non-absolute values for bootstrap GHC variable

Fixes #24682

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3fff0977 by Matthew Pickering at 2024-04-23T15:02:38-04:00
Don't depend on registerPackage function in Cabal

More recent versions of Cabal modify the behaviour of libAbiHash which
breaks our usage of registerPackage.

It is simpler to inline the part of registerPackage that we need and
avoid any additional dependency and complication using the higher-level
function introduces.

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c62dc317 by Cheng Shao at 2024-04-25T01:32:02-04:00
ghc-bignum: remove obsolete ln script

This commit removes an obsolete ln script in ghc-bignum/gmp. See
060251c24ad160264ae8553efecbb8bed2f06360 for its original intention,
but it's been obsolete for a long time, especially since the removal
of the make build system. Hence the house cleaning.

- - - - -
6399d52b by Cheng Shao at 2024-04-25T01:32:02-04:00
ghc-bignum: update gmp to 6.3.0

This patch bumps the gmp-tarballs submodule and updates gmp to 6.3.0.
The tarball format is now xz, and gmpsrc.patch has been patched into
the tarball so hadrian no longer needs to deal with patching logic
when building in-tree GMP.

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65b4b92f by Cheng Shao at 2024-04-25T01:32:02-04:00
hadrian: remove obsolete Patch logic

This commit removes obsolete Patch logic from hadrian, given we no
longer need to patch the gmp tarball when building in-tree GMP.

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71f28958 by Cheng Shao at 2024-04-25T01:32:02-04:00
autoconf: remove obsolete patch detection

This commit removes obsolete deletection logic of the patch command
from autoconf scripts, given we no longer need to patch anything in
the GHC build process.

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daeda834 by Sylvain Henry at 2024-04-25T01:32:43-04:00
JS: correctly handle RUBBISH literals (#24664)

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8a06ddf6 by Matthew Pickering at 2024-04-25T11:16:16-04:00
Linearise ghc-internal and base build

This is achieved by requesting the final package database for
ghc-internal, which mandates it is fully built as a dependency of
configuring the `base` package. This is at the expense of cross-package
parrallelism between ghc-internal and the base package.

Fixes #24436

- - - - -
94da9365 by Andrei Borzenkov at 2024-04-25T11:16:54-04:00
Fix tuple puns renaming (24702)

Move tuple renaming short cutter from `isBuiltInOcc_maybe` to `isPunOcc_maybe`, so we consider incoming module.

I also fixed some hidden bugs that raised after the change was done.

- - - - -
fa03b1fb by Fendor at 2024-04-26T18:03:13-04:00
Refactor the Binary serialisation interface

The goal is simplifiy adding deduplication tables to `ModIface`
interface serialisation.

We identify two main points of interest that make this difficult:

1. UserData hardcodes what `Binary` instances can have deduplication
   tables. Moreover, it heavily uses partial functions.
2. GHC.Iface.Binary hardcodes the deduplication tables for 'Name' and
   'FastString', making it difficult to add more deduplication.

Instead of having a single `UserData` record with fields for all the
types that can have deduplication tables, we allow to provide custom
serialisers for any `Typeable`.
These are wrapped in existentials and stored in a `Map` indexed by their
respective `TypeRep`.
The `Binary` instance of the type to deduplicate still needs to
explicitly look up the decoder via `findUserDataReader` and
`findUserDataWriter`, which is no worse than the status-quo.

`Map` was chosen as microbenchmarks indicate it is the fastest for a
small number of keys (< 10).

To generalise the deduplication table serialisation mechanism, we
introduce the types `ReaderTable` and `WriterTable` which provide a
simple interface that is sufficient to implement a general purpose
deduplication mechanism for `writeBinIface` and `readBinIface`.

This allows us to provide a list of deduplication tables for
serialisation that can be extended more easily, for example for
`IfaceTyCon`, see the issue https://gitlab.haskell.org/ghc/ghc/-/issues/24540
for more motivation.

In addition to this refactoring, we split `UserData` into `ReaderUserData`
and `WriterUserData`, to avoid partial functions and reduce overall
memory usage, as we need fewer mutable variables.

Bump haddock submodule to accomodate for `UserData` split.

-------------------------
Metric Increase:
    MultiLayerModulesTH_Make
    MultiLayerModulesRecomp
    T21839c
-------------------------

- - - - -
bac57298 by Fendor at 2024-04-26T18:03:13-04:00
Split `BinHandle` into `ReadBinHandle` and `WriteBinHandle`

A `BinHandle` contains too much information for reading data.
For example, it needs to keep a `FastMutInt` and a `IORef BinData`,
when the non-mutable variants would suffice.

Additionally, this change has the benefit that anyone can immediately
tell whether the `BinHandle` is used for reading or writing.

Bump haddock submodule BinHandle split.

- - - - -
4d6394dd by Simon Peyton Jones at 2024-04-26T18:03:49-04:00
Fix missing escaping-kind check in tcPatSynSig

Note [Escaping kind in type signatures] explains how we deal
with escaping kinds in type signatures, e.g.
    f :: forall r (a :: TYPE r). a
where the kind of the body is (TYPE r), but `r` is not in
scope outside the forall-type.

I had missed this subtlety in tcPatSynSig, leading to #24686.
This MR fixes it; and a similar bug in tc_top_lhs_type. (The
latter is tested by T24686a.)

- - - - -
981c2c2c by Alan Zimmerman at 2024-04-26T18:04:25-04:00
EPA: check-exact: check that the roundtrip reproduces the source

Closes #24670

- - - - -
a8616747 by Andrew Lelechenko at 2024-04-26T18:05:01-04:00
Document that setEnv is not thread-safe

- - - - -
1e41de83 by Bryan Richter at 2024-04-26T18:05:37-04:00
CI: Work around frequent Signal 9 errors

- - - - -
a6d5f9da by Naïm Favier at 2024-04-27T17:52:40-04:00
ghc-internal: add MonadFix instance for (,)

Closes https://gitlab.haskell.org/ghc/ghc/-/issues/24288, implements CLC
proposal https://github.com/haskell/core-libraries-committee/issues/238.

Adds a MonadFix instance for tuples, permitting value recursion in the
"native" writer monad and bringing consistency with the existing
instance for transformers's WriterT (and, to a lesser extent, for Solo).

- - - - -
64feadcd by Rodrigo Mesquita at 2024-04-27T17:53:16-04:00
bindist: Fix xattr cleaning

The original fix (725343aa) was incorrect because it used the shell
bracket syntax which is the quoting syntax in autoconf, making the test
for existence be incorrect and therefore `xattr` was never run.

Fixes #24554

- - - - -
78b16a5f by Andreas Klebinger at 2024-04-29T15:50:42+02:00
NCG: AArch64 - Add -fhuge-code-sections.

When enabled the arm backend will assume jumps to targets outside of the
current module are further than 128MB away.

This will allow for code to work if:
* The current module results in less than 128MB of code.
* The whole program is loaded within a 4GB memory region.

We enable this by default on mac where the lack of split sections can
sometimes cause us to go over this limit - see #24648.

This works around #24648 for now.

- - - - -


30 changed files:

- .gitlab-ci.yml
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- CODEOWNERS
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/Config.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Driver/Config/CmmToAsm.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Ext/Binary.hs
- compiler/GHC/Iface/Ext/Fields.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Binary.hs
- compiler/GHC/Iface/Recomp/Flags.hs
- compiler/GHC/Iface/Syntax.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/32c94235fff1438c9b4d11015c7df4a7c85e6c62...78b16a5fb82508add5a29a4e223cd1d69757f115

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/32c94235fff1438c9b4d11015c7df4a7c85e6c62...78b16a5fb82508add5a29a4e223cd1d69757f115
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