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The first change makes the array ones use the proper fixed-size types,
which also means that just like before, they can be used without
explicit conversions with the boxed sized types. (Before, it was Int# /
Word# on both sides, now it is fixed sized on both sides).
For the second change, don't use "extend" or "narrow" in some of the
user-facing primops names for conversions.
- Names like `narrowInt32#` are misleading when `Int` is 32-bits.
- Names like `extendInt64#` are flat-out wrong when `Int is
32-bits.
- `narrow{Int,Word}<N>#` however map a type to itself, and so don't
suffer from this problem. They are left as-is.
These changes are batched together because Alex happend to use the array
ops. We can only use released versions of Alex at this time, sadly, and
I don't want to have to have a release thatwon't work for the final GHC
9.2. So by combining these we get all the changes for Alex done at once.
Bump hackage state in a few places, and also make that workflow slightly
easier for the future.
Bump minimum Alex version
Bump Cabal, array, bytestring, containers, text, and binary submodules
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This replaces all Word<N> = W<N># Word# and Int<N> = I<N># Int# with
Word<N> = W<N># Word<N># and Int<N> = I<N># Int<N>#, thus providing us
with properly sized primitives in the codegenerator instead of pretending
they are all full machine words.
This came up when implementing darwinpcs for arm64. The darwinpcs reqires
us to pack function argugments in excess of registers on the stack. While
most procedure call standards (pcs) assume arguments are just passed in
8 byte slots; and thus the caller does not know the exact signature to make
the call, darwinpcs requires us to adhere to the prototype, and thus have
the correct sizes. If we specify CInt in the FFI call, it should correspond
to the C int, and not just be Word sized, when it's only half the size.
This does change the expected output of T16402 but the new result is no
less correct as it eliminates the narrowing (instead of the `and` as was
previously done).
Bumps the array, bytestring, text, and binary submodules.
Co-Authored-By: Ben Gamari <ben@well-typed.com>
Metric Increase:
T13701
T14697
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There are three problems with the current API:
1. It is hard to properly write instances for ``Quote m => m (TExp a)`` as the type is the composition
of two type constructors. Doing so in your program involves making your own newtype and
doing a lot of wrapping/unwrapping.
For example, if I want to create a language which I can either run immediately or
generate code from I could write the following with the new API. ::
class Lang r where
_int :: Int -> r Int
_if :: r Bool -> r a -> r a -> r a
instance Lang Identity where
_int = Identity
_if (Identity b) (Identity t) (Identity f) = Identity (if b then t else f)
instance Quote m => Lang (Code m) where
_int = liftTyped
_if cb ct cf = [|| if $$cb then $$ct else $$cf ||]
2. When doing code generation it is common to want to store code fragments in
a map. When doing typed code generation, these code fragments contain a
type index so it is desirable to store them in one of the parameterised
map data types such as ``DMap`` from ``dependent-map`` or ``MapF`` from
``parameterized-utils``.
::
compiler :: Env -> AST a -> Code Q a
data AST a where ...
data Ident a = ...
type Env = MapF Ident (Code Q)
newtype Code m a = Code (m (TExp a))
In this example, the ``MapF`` maps an ``Ident String`` directly to a ``Code Q String``.
Using one of these map types currently requires creating your own newtype and constantly
wrapping every quotation and unwrapping it when using a splice. Achievable, but
it creates even more syntactic noise than normal metaprogramming.
3. ``m (TExp a)`` is ugly to read and write, understanding ``Code m a`` is
easier. This is a weak reason but one everyone
can surely agree with.
Updates text submodule.
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Fixes #18279. Bumps the `text` submodule.
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This requires bumping the `exceptions` and `text` submodules to bring
in commits that bump their respective upper version bounds on
`template-haskell`.
Fixes #17645. Fixes #17696.
Note that the new `text` commit includes a fair number of additions
to the Haddocks in that library. As a result, Haddock has to do more
work during the `haddock.Cabal` test case, increasing the number of
allocations it requires. Therefore,
-------------------------
Metric Increase:
haddock.Cabal
-------------------------
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(cherry picked from commit a512f1e32bd4d6079559e3172522591863321fe7)
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This completes the 2nd phase of the Semigroup=>Monoid Proposal (SMP)
initiated in 8ae263ceb3566a7c82336400b09cb8f381217405.
This updates a couple submodules to address <> naming clashes.
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We failed to add dist-install and dist-boot to .gitignore in the commits
brought in via commit e054c5f06451def4437d9d770ae156f034796c59. This round of
submodule commits should do the trick.
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a520adcce27908c799b64214618cf9b33572dc37 updated the upstream repository
locations but failed to update the commits themselves.
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Cabal's parser has been rewritten in terms of Parsec (which is not
enabled yet in Cabal-2.0 by default, but can be enabled by a cabal
flag). The plan for Cabal is to drop support for the non-parsec parser,
so we need to prepare GHC to cope with new situation.
However, this means that lib:Cabal requires three new library
dependency submodules,
- parsec
- text
- mtl
What complicates matters is that we need to build `ghc-cabal` early on
during the bootstrap phase which currently needs to invoke `ghc --make`
directly. So these additional dependencies need to be integrated into
the monolithic `ghc --make` invocation which produces the `ghc-cabal`
executable.
Test Plan: `./validate --fast` passed
Reviewers: austin, bgamari
Subscribers: erikd, phadej, rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3757
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