[Git][ghc/ghc][wip/pmcheck-refuts] 24 commits: Restore the --coerce option in 'happy' configuration

Sebastian Graf gitlab at gitlab.haskell.org
Thu May 23 11:29:30 UTC 2019 


Sebastian Graf pushed to branch wip/pmcheck-refuts at Glasgow Haskell Compiler / GHC


Commits:
684dc290 by Vladislav Zavialov at 2019-05-14T20:41:19Z
Restore the --coerce option in 'happy' configuration

happy-1.19.10 has been released with a fix for --coerce in the presence
of higher rank types. This should result in about 10% performance
improvement in the parser.

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a416ae26 by Alp Mestanogullari at 2019-05-14T20:41:20Z
Hadrian: 'need' source files for various docs in Rules.Documentation

Previously, changing one of the .rst files from the user guide would not cause
the user guide to be rebuilt. This patch take a first stab at declaring the
documentation source files that our documentation rules depend on, focusing
on the .rst files only for now.

We eventually might want to rebuild docs when we, say, change the haddock style
file, but this level of tracking isn't really necessary for now.

This fixes #16645.

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7105fb66 by Ben Gamari at 2019-05-16T16:47:59Z
rts: Explicit state that CONSTR tag field is zero-based

This was a bit unclear as we use both one-based and zero-based
tags in GHC.

[skip ci]
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5bb80cf2 by David Eichmann at 2019-05-20T14:41:55Z
Improve test runner logging when calculating performance metric baseline #16662

We attempt to get 75 commit hashes via `git log`, but this only gave 10
hashes in a CI run (see #16662). Better logging may help solve this
error if it occurs again in the future.

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b46efa2b by David Eichmann at 2019-05-20T18:45:56Z
Recalculate Performance Test Baseline T9630 #16680

Metric Decrease:
    T9630

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54095bbd by Takenobu Tani at 2019-05-21T20:54:00Z
users-guide: Fix directive errors on 8.10

The following sections are not displayed due to a directive error:

  * -Wunused-record-wildcards
  * -Wredundant-record-wildcards

I changed the location of the `since` directive.

[skip ci]

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8fc654c3 by David Eichmann at 2019-05-21T20:57:37Z
Include CPP preprocessor dependencies in -M output

Issue #16521

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0af519ac by David Eichmann at 2019-05-21T21:01:16Z
Refactor Libffi and RTS rules

This removes a hack that copies libffi files to the rts
build directory. This was done in a libffi rule, but now
an rts rule correctly needs and copies the relevant
files from the libffi build dir to the rts build dir.

Issues: #16272 #16304

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9342b1fa by Kirill Elagin at 2019-05-21T21:04:54Z
users-guide: Fix -rtsopts default
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d0142f21 by Javran Cheng at 2019-05-21T21:08:29Z
Fix doc for Data.Function.fix.

Doc-only change.

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ddd905b4 by Shayne Fletcher at 2019-05-21T21:12:07Z
Update resolver for for happy 1.19.10

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e32c30ca by Alp Mestanogullari at 2019-05-21T21:15:45Z
distrib/configure.ac.in: remove mention to 'settings', since settings.in is gone

Otherwise, when `./configure`ing a GHC bindist, produced by either Make or
Hadrian, we would try to generate the `settings` file from the `settings.in`
template that we used to have around but which has been gone since d37d91e9.
That commit generates the settings file using the build systems instead, but
forgot to remove this mention to the `settings` file.

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4a6c8436 by Ryan Scott at 2019-05-21T21:19:22Z
Fix #16666 by parenthesizing contexts in Convert

Most places where we convert contexts in `Convert` are actually in
positions that are to the left of some `=>`, such as in superclasses
and instance contexts. Accordingly, these contexts need to be
parenthesized at `funPrec`. To accomplish this, this patch changes
`cvtContext` to require a precedence argument for the purposes of
calling `parenthesizeHsContext` and adjusts all `cvtContext` call
sites accordingly.

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c32f64e5 by Ben Gamari at 2019-05-21T21:23:01Z
gitlab-ci: Allow Windows Hadrian build to fail

Due to #16574.
- - - - -
412a1f39 by Ben Gamari at 2019-05-21T21:23:01Z
Update .gitlab-ci.yml
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0dc79856 by Julian Leviston at 2019-05-22T00:55:44Z
Allow for multiple linker instances. Fixes Haskell portion of #3372.

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21272670 by Michael Sloan at 2019-05-22T20:37:57Z
Have GHCi use object code for UnboxedTuples modules #15454

The idea is to automatically enable -fobject-code for modules that use
UnboxedTuples, along with all the modules they depend on. When looking
into how to solve this, I was pleased to find that there was already
highly similar logic for enabling code generation when -fno-code is
specified but TemplateHaskell is used.

The state before this patch was that if you used unboxed tuples then you
had to enable `-fobject-code` globally rather than on a per module
basis.

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ddae344e by Michael Sloan at 2019-05-22T20:41:31Z
Use datatype for unboxed returns when loading ghc into ghci

See #13101 and #15454

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78c3f330 by Kevin Buhr at 2019-05-22T20:45:08Z
Add regression test for old Word32 arithmetic issue (#497)

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ecc9366a by Alec Theriault at 2019-05-22T20:48:45Z
RTS: Fix restrictive cast

Commit e75a9afd2989e0460f9b49fa07c1667299d93ee9 added an `unsigned` cast
to account for OSes that have signed `rlim_t` signed. Unfortunately,
the `unsigned` cast has the unintended effect of narrowing `rlim_t` to
only 4 bytes. This leads to some spurious out of memory crashes
(in particular: Haddock crashes with OOM whenn building docs of
`ghc`-the-library).

In this case, `W_` is a better type to cast to: we know it will be
unsigned too and it has the same type as `*len` (so we don't suffer from
accidental narrowing).

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2c15b85e by Alp Mestanogullari at 2019-05-22T20:52:22Z
Hadrian: add --test-root-dirs, to only run specific directories of tests

We can specify several of those, by using the flag multiple times or
just once but combining the directories with ':'.

Along the way, this patch also fixes the testsuite-related --only flag,
so that we can use it many times instead of being force to specify a
space-separated list of test in a single --only flag.

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6efe04de by Ryan Scott at 2019-05-22T20:56:01Z
Use HsTyPats in associated type family defaults

Associated type family default declarations behave strangely in a
couple of ways:

1. If one tries to bind the type variables with an explicit `forall`,
   the `forall`'d part will simply be ignored. (#16110)
2. One cannot use visible kind application syntax on the left-hand
   sides of associated default equations, unlike every other form
   of type family equation. (#16356)

Both of these issues have a common solution. Instead of using
`LHsQTyVars` to represent the left-hand side arguments of an
associated default equation, we instead use `HsTyPats`, which is what
other forms of type family equations use. In particular, here are
some highlights of this patch:

* `FamEqn` is no longer parameterized by a `pats` type variable, as
  the `feqn_pats` field is now always `HsTyPats`.
* The new design for `FamEqn` in chronicled in
  `Note [Type family instance declarations in HsSyn]`.
* `TyFamDefltEqn` now becomes the same thing as `TyFamInstEqn`. This
  means that many of `TyFamDefltEqn`'s code paths can now reuse the
  code paths for `TyFamInstEqn`, resulting in substantial
  simplifications to various parts of the code dealing with
  associated type family defaults.

Fixes #16110 and #16356.

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4ba73e00 by Luite Stegeman at 2019-05-22T20:59:39Z
fix Template Haskell cross compilation on 64 bit compiler with 32 bit target

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a79623b7 by Sebastian Graf at 2019-05-23T11:29:28Z
TmOracle: Replace negative term equalities by refutable PmAltCons

The `PmExprEq` business was a huge hack and was at the same time vastly
too powerful and not powerful enough to encode negative term equalities,
i.e. facts of the form "forall y. x ≁ Just y".

This patch introduces the concept of 'refutable shapes': What matters
for the pattern match checker is being able to encode knowledge of the
form "x can no longer be the literal 5" or "x can no longer be Just y,
for any y". We encode this knowledge in the form of a `PmRefutEnv`,
storing a set of newly introduced `PmAltCon`s (literals and `ConLike`s)
for each variable denoting equations of the above form.

So, say we have `x ≁ Just ∈ refuts` in the term oracle context and
try to solve an equality like `x ~ Just 5`. The entry in the refutable
environment will immediately lead to a contradiction.

This machinery makes the whole `PmExprEq` business completely
unnecessary, getting rid of a lot of (mostly dead) code.

Note that the PmAltConLike case is currently unnecessary. This is bound
to change in a follow-up patch. If we began to use PmAltConLike, we'd
even profit from nicer error messages as is currently the case for
negative literal equalities.

See the Note [Refutable shapes] in TmOracle for a place to start.

- - - - -


30 changed files:

- .gitlab-ci.yml
- aclocal.m4
- compiler/basicTypes/UniqSupply.hs
- compiler/deSugar/Check.hs
- compiler/deSugar/DsMeta.hs
- compiler/deSugar/PmExpr.hs
- compiler/deSugar/TmOracle.hs
- compiler/ghc.cabal.in
- compiler/ghci/Debugger.hs
- compiler/ghci/Linker.hs
- + compiler/ghci/LinkerTypes.hs
- compiler/hieFile/HieAst.hs
- compiler/hsSyn/Convert.hs
- compiler/hsSyn/HsDecls.hs
- compiler/hsSyn/HsExtension.hs
- compiler/hsSyn/HsInstances.hs
- compiler/main/DriverMkDepend.hs
- compiler/main/DynFlags.hs
- compiler/main/GhcMake.hs
- compiler/main/HscMain.hs
- compiler/main/HscTypes.hs
- compiler/main/InteractiveEval.hs
- compiler/nativeGen/AsmCodeGen.hs
- compiler/nativeGen/RegAlloc/Linear/State.hs
- compiler/parser/RdrHsSyn.hs
- compiler/rename/RnSource.hs
- compiler/typecheck/TcSplice.hs
- compiler/typecheck/TcTyClsDecls.hs
- compiler/utils/ListSetOps.hs
- distrib/configure.ac.in


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/compare/0e1b15dbd63928d9edbf336189f037abaa3876cf...a79623b7178ff7907591f6668e846b7593998144

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/compare/0e1b15dbd63928d9edbf336189f037abaa3876cf...a79623b7178ff7907591f6668e846b7593998144
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