John Ericson authored 5 years ago and Marge Bot committed 5 years ago

This prepares the way for making Int32# and Word32# the actual size they
claim to be.

Updates binary submodule for (de)serializing the new runtime reps.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

These are unexploded minds as far as the linter is concerned. I don't
want to hit in my MRs by mistake!

I did this with `sed`, and then rolled back some changes in the docs,
config.guess, and the linter itself.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

Instead following @angerman's suggestion put them in the config file.
Maybe we could re-key llvm-targets someday, but this is good for now.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

The compiler doesn't create uses nor compiles the uses that exist
specially. These are just plain C-- FFI.

These `await*` ones are especially important to so convert because "true"
primops are hard to make platform-specific currently.

The other exports are part of this commit so this module always exports
something, which avoids silly CPP elsewhere. More will be added later
once `foreign import prim` is extended.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

The code, including the generated module with the version, is now in
ghc-boot. Config.hs reexports stuff as needed, ghc-pkg doesn't need any
tricks at all.

Ryan Scott authored 5 years ago and Marge Bot committed 5 years ago

Commit cef80c0b debuted a breaking
change to `template-haskell`, so in order to guard against it
properly with CPP, we need to bump the `template-haskell` version
number accordingly.

Moritz Angermann authored 5 years ago and Marge Bot committed 5 years ago

As such the internal linker will fail for them.  The alternative
would be to implement them as stubs in the linker and have them
barf when called.

> Not all operations are supported by all target processors. If a
  particular operation cannot be implemented on the target processor,
  a warning is generated and a call an external function is
  generated. The external function carries the same name as the
  built-in version, with an additional suffix ‘_n’ where n is the size
  of the data type.

(https://gcc.gnu.org/onlinedocs/gcc/_005f_005fsync-Builtins.html)

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

Metric Increase:
    haddock.Cabal

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

Previously we would hackily evaluate a textual code snippet to compute
actions to disable I/O buffering and flush the stdout/stderr handles.
This broke in a number of ways (#15336, #16563).

Instead we now ship a module (`GHC.GHCi.Helpers`) with `base` containing
the needed actions. We can then easily refer to these via `Orig` names.

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

On Windows we must lock package databases even when opening for
read-only access. This means that concurrent GHC sessions are very
likely to fail with file lock contention.

See #16773.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

This matches GHC itself getting the target platform from there.

John Ericson authored 5 years ago and Marge Bot committed 5 years ago

ghc-pkg needs to be aware of platforms so it can figure out which
subdire within the user package db to use. This is admittedly
roundabout, but maybe Cabal could use the same notion of a platform as
GHC to good affect too.

Fumiaki Kinoshita authored 5 years ago and Marge Bot committed 5 years ago

Metric Increase:
    haddock.base

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

Previously the Event enumeration produced by hsc2hs would sometimes
include a currently-unused POLLRDHUP item. This unused binding would
result in a build failure. Drop it.

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

Previously there were a few cases where operations like `omit_ways`
were incorrectly passed a single way (e.g. `omit_ways('threaded2')`).
This won't work as the author expected.

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

As noted in #16819, this operation is racy under concurrent execution.

Skips `executeFile001` test in `threaded2` way. Fixes #16814.

Andrew Martin authored 5 years ago and Marge Bot committed 5 years ago

GHC Proposal: 0013-unlifted-newtypes.rst
Discussion: https://github.com/ghc-proposals/ghc-proposals/pull/98


Issues: #15219, #1311, #13595, #15883
Implementation Details:
  Note [Implementation of UnliftedNewtypes]
  Note [Unifying data family kinds]
  Note [Compulsory newtype unfolding]

This patch introduces the -XUnliftedNewtypes extension. When this
extension is enabled, GHC drops the restriction that the field in
a newtype must be of kind (TYPE 'LiftedRep). This allows types
like Int# and ByteArray# to be used in a newtype. Additionally,
coerce is made levity-polymorphic so that it can be used with
newtypes over unlifted types.

The bulk of the changes are in TcTyClsDecls.hs. With -XUnliftedNewtypes,
getInitialKind is more liberal, introducing a unification variable to
return the kind (TYPE r0) rather than just returning (TYPE 'LiftedRep).
When kind-checking a data constructor with kcConDecl, we attempt to
unify the kind of a newtype with the kind of its field's type. When
typechecking a data declaration with tcTyClDecl, we again perform a
unification. See the implementation note for more on this.

Co-authored-by: Richard Eisenberg <rae@richarde.dev>

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

Previously we used an awful hybrid batch script/Bourne shell script to
allow this test to run both on Windows and Linux (fixing #9399).
However, this breaks on some libc implementations (e.g. musl). Fix this.

Fixes #16798.

 * Skip process005 in ghci way
 * Mark process002 as fragile in threaded2

Marks posix002 as fragile in threaded2 way due to #16550.

As noted in #16536.

As noted in #16535.

(cherry picked from commit 1134488b)

(cherry picked from commit fdb07571)

(cherry picked from commit ff438786)

Metric Increase:
    haddock.Cabal

(cherry picked from commit 983ada70)

Alp Mestanogullari authored 5 years ago and Marge Bot committed 5 years ago

As discussed in #16331, the GHCI macro, defined through 'ghci' flags
in ghc.cabal.in, ghc-bin.cabal.in and ghci.cabal.in, is supposed to indicate
whether GHC is built with support for an internal interpreter, that runs in
the same process. It is however overloaded in a few places to mean
"there is an interpreter available", regardless of whether it's an internal
or external interpreter.

For the sake of clarity and with the hope of more easily being able to
build stage 1 GHCs with external interpreter support, this patch splits
the previous GHCI macro into 3 different ones:

- HAVE_INTERNAL_INTERPRETER: GHC is built with an internal interpreter
- HAVE_EXTERNAL_INTERPRETER: GHC is built with support for external interpreters
- HAVE_INTERPRETER: HAVE_INTERNAL_INTERPRETER || HAVE_EXTERNAL_INTERPRETER

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

This adds a new test, only run in the `normal` way, to verify the size
of FUNs and PAPs.

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

This was previously broken in several ways. This is fixed and it also
now tests arrays. Unfortunately I was unable to find a way to continue
testing PAP and FUN sizes; these simply depend too much upon the
behavior of the simplifier.

I also tried to extend this to test non-empty arrays as well but
unfortunately this was non-trivial as the array card size constant isn't
readily available from haskell.

Fixes #16531.

Ben Gamari authored 5 years ago and Marge Bot committed 5 years ago

As noted in #16224, CPUTime001 has been quite problematic, reporting
non-monotonic timestamps in CI. Unfortunately I've been unable to
reproduce this locally.