[Git][ghc/ghc][wip/supersven/aarch64-jump-tables] 37 commits: AArch64: Implement takeRegRegMoveInstr

Sven Tennie (@supersven) gitlab at gitlab.haskell.org
Sat Sep 14 10:50:27 UTC 2024 


Sven Tennie pushed to branch wip/supersven/aarch64-jump-tables at Glasgow Haskell Compiler / GHC


Commits:
573f9833 by Sven Tennie at 2024-09-08T09:58:21+00:00
AArch64: Implement takeRegRegMoveInstr

This has likely been forgotten.

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20b0de7d by Hécate Kleidukos at 2024-09-08T14:19:28-04:00
haddock: Configuration fix for ReadTheDocs

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03055c71 by Sylvain Henry at 2024-09-09T14:58:15-04:00
JS: fake support for native adjustors (#25159)

The JS backend doesn't support adjustors (I believe) and in any case if
it ever supports them it will be a native support, not one via libffi.

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5bf0e6bc by Sylvain Henry at 2024-09-09T14:58:56-04:00
JS: remove redundant h$lstat

It was introduced a second time by mistake in
27dceb42376c34b99a38e36a33b2abc346ed390f (cf #25190)

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ffbc2ab0 by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Refactor only newSysLocalDs

* Change newSysLocalDs to take a scaled type
* Add newSysLocalMDs that takes a type and makes a ManyTy local

Lots of files touched, nothing deep.

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7124e4ad by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Don't introduce 'nospec' on the LHS of a RULE

This patch address #25160.  The main payload is:

* When desugaring the LHS of a RULE, do not introduce the `nospec` call
  for non-canonical evidence.  See GHC.Core.InstEnv
  Note [Coherence and specialisation: overview]

  The `nospec` call usually introdued in `dsHsWrapper`, but we don't want it
  on the LHS of a RULE (that's what caused #25160).  So now `dsHsWrapper` takes
  a flag to say if it's on the LHS of a RULE.  See wrinkle (NC1) in
  `Note [Desugaring non-canonical evidence]` in GHC.HsToCore.Binds.

But I think this flag will go away again when I have finished with my
(entirely separate) speciaise-on-values patch (#24359).

All this meant I had to re-understand the `nospec` stuff and coherence, and
that in turn made me do some refactoring, and add a lot of new documentation

The big change is that in GHC.Core.InstEnv, I changed
  the /type synonym/ `Canonical` into
  a /data type/ `CanonicalEvidence`
and documented it a lot better.

That in turn made me realise that CalLStacks were being treated with a
bit of a hack, which I documented in `Note [CallStack and ExecptionContext hack]`.

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663daf8d by Simon Peyton Jones at 2024-09-10T00:40:37-04:00
Add defaulting of equalities

This MR adds one new defaulting strategy to the top-level
defaulting story: see Note [Defaulting equalities] in GHC.Tc.Solver.

This resolves #25029 and #25125, which showed that users were
accidentally relying on a GHC bug, which was fixed by

    commit 04f5bb85c8109843b9ac2af2a3e26544d05e02f4
    Author: Simon Peyton Jones <simon.peytonjones at gmail.com>
    Date:   Wed Jun 12 17:44:59 2024 +0100

    Fix untouchability test

    This MR fixes #24938.  The underlying problem was tha the test for
    "does this implication bring in scope any equalities" was plain wrong.

This fix gave rise to a number of user complaints; but the improved
defaulting story of this MR largely resolves them.

On the way I did a bit of refactoring, of course

* Completely restructure the extremely messy top-level defaulting
  code. The new code is in GHC.Tc.Solver.tryDefaulting, and is much,
  much, much esaier to grok.

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e28cd021 by Andrzej Rybczak at 2024-09-10T00:41:18-04:00
Don't name a binding pattern

It's a keyword when PatternSynonyms are set.

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b09571e2 by Simon Peyton Jones at 2024-09-10T00:41:54-04:00
Do not use an error thunk for an absent dictionary

In worker/wrapper we were using an error thunk for an absent dictionary,
but that works very badly for -XDictsStrict, or even (as #24934 showed)
in some complicated cases involving strictness analysis and unfoldings.

This MR just uses RubbishLit for dictionaries. Simple.

No test case, sadly because our only repro case is rather complicated.

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8bc9f5f6 by Hécate Kleidukos at 2024-09-10T00:42:34-04:00
haddock: Remove support for applehelp format in the Manual

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9ca15506 by doyougnu at 2024-09-10T10:46:38-04:00
RTS linker: add support for hidden symbols (#25191)

Add linker support for hidden symbols. We basically treat them as weak
symbols.

Patch upstreamed from haskell.nix

Co-authored-by: Sylvain Henry <sylvain at haskus.fr>
Co-authored-by: Moritz Angermann <moritz.angermann at gmail.com>

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3b2dc826 by Sven Tennie at 2024-09-10T10:47:14-04:00
Fix C warnings (#25237)

GCC 14 treats the fixed warnings as errors by default. I.e. we're
gaining GCC 14 compatibility with these fixes.

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05715994 by Sylvain Henry at 2024-09-10T10:47:55-04:00
JS: fix codegen of static string data

Before this patch, when string literals are made trivial, we would
generate `h$("foo")` instead of `h$str("foo")`. This was
introduced by mistake in 6bd850e887b82c5a28bdacf5870d3dc2fc0f5091.

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949ebced by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Re-organise cross-OS compatibility layer

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84ac9a99 by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Remove CPP for obsolete GHC and Cabal versions

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370d1599 by Hécate Kleidukos at 2024-09-10T19:19:40-04:00
haddock: Move the changelog file to the 'extra-doc-files' section in the cabal file

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cfbff65a by Simon Peyton Jones at 2024-09-10T19:20:16-04:00
Add ZonkAny and document it

This MR fixed #24817 by adding ZonkAny, which takes a Nat
argument.

See Note [Any types] in GHC.Builtin.Types, especially
wrinkle (Any4).

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0167e472 by Matthew Pickering at 2024-09-11T02:41:42-04:00
hadrian: Make sure ffi headers are built before using a compiler

When we are using ffi adjustors then we rely on `ffi.h` and
`ffitarget.h` files during code generation when compiling stubs.

Therefore we need to add this dependency to the build system (which this
patch does).

Reproducer, configure with `--enable-libffi-adjustors` and then build
"_build/stage1/libraries/ghc-prim/build/GHC/Types.p_o".

Observe that this fails before this patch and works afterwards.

Fixes #24864

Co-authored-by: Sylvain Henry <sylvain at haskus.fr>

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0f696958 by Rodrigo Mesquita at 2024-09-11T02:42:18-04:00
base: Deprecate BCO primops exports from GHC.Exts

See https://github.com/haskell/core-libraries-committee/issues/212.

These reexports will be removed in GHC 9.14.

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cf0e7729 by Alan Zimmerman at 2024-09-11T02:42:54-04:00
EPA: Remove Anchor = EpaLocation synonym

This just causes confusion.

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8e462f4d by Andrew Lelechenko at 2024-09-11T22:20:37-04:00
Bump submodule deepseq to 1.5.1.0

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aa4500ae by Sebastian Graf at 2024-09-11T22:21:13-04:00
User's guide: Fix the "no-backtracking" example of -XOrPatterns (#25250)

Fixes #25250.

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1c479c01 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add Native Code Generator (NCG)

This architecture wasn't supported before.

Co-authored-by: Moritz Angermann <moritz.angermann at gmail.com>

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51b678e1 by Sven Tennie at 2024-09-12T10:39:38+00:00
Adjust test timings for slower computers

Increase the delays a bit to be able to run these tests on slower
computers.

The reference was a Lichee Pi 4a RISCV64 machine.

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a0e41741 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add RTS linker

This architecture wasn't supported before.

Co-authored-by: Moritz Angermann <moritz.angermann at gmail.com>

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d365b1d4 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Ignore divbyzero test

The architecture's behaviour differs from the test's expectations. See
comment in code why this is okay.

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abf3d699 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Enable MulMayOflo_full test

It works and thus can be tested.

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38c7ea8c by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: LibffiAdjustor: Ensure code caches are flushed

RISCV64 needs a specific code flushing sequence (involving fence.i) when
new code is created/loaded.

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7edc6965 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add additional linker symbols for builtins

We're relying on some GCC/Clang builtins. These need to be visible to
the linker (and not be stripped away.)

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92ad3d42 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Add GHCi support

As we got a RTS linker for this architecture now, we can enable GHCi for
it.

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a145f701 by Sven Tennie at 2024-09-12T10:39:38+00:00
RISCV64: Set codeowners of the NCG

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8e6d58cf by Sven Tennie at 2024-09-12T10:39:38+00:00
Add test for C calling convention

Ensure that parameters and return values are correctly processed. A
dedicated test (like this) helps to get the subtleties of calling
conventions easily right.

The test is failing for WASM32 and marked as fragile to not forget to
investigate this (#25249).

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fff55592 by Torsten Schmits at 2024-09-12T21:50:34-04:00
finder: Add `IsBootInterface` to finder cache keys

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cdf530df by Alan Zimmerman at 2024-09-12T21:51:10-04:00
EPA: Sync ghc-exactprint to GHC

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1374349b by Sebastian Graf at 2024-09-13T07:52:11-04:00
DmdAnal: Fast path for `multDmdType` (#25196)

This is in order to counter a regression exposed by SpecConstr.

Fixes #25196.

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80769bc9 by Andrew Lelechenko at 2024-09-13T07:52:47-04:00
Bump submodule array to 0.5.8.0

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3b037c58 by Sven Tennie at 2024-09-14T10:50:18+00:00
AArch64: Implement switch/jump tables (#19912)

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

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15 changed files:

- CODEOWNERS
- compiler/CodeGen.Platform.h
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Dwarf/Constants.hs
- compiler/GHC/CmmToAsm/PIC.hs
- + compiler/GHC/CmmToAsm/RV64.hs
- + compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- + compiler/GHC/CmmToAsm/RV64/Cond.hs
- + compiler/GHC/CmmToAsm/RV64/Instr.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c67216918cd9c31391e3b30ba2ddbd50e0ab6958...3b037c583aa46b04722f715e9f1a6f564e59c075

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c67216918cd9c31391e3b30ba2ddbd50e0ab6958...3b037c583aa46b04722f715e9f1a6f564e59c075
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