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Summary:
HsTyLit now has SourceText
Update documentation of HsSyn to reflect which annotations are attached to which element.
Ensure that the parser always keeps HsSCC and HsTickPragma values, to
be ignored in the desugar phase if not needed
Bringing in SourceText for pragmas
Add Location in NPlusKPat
Add Location in FunDep
Make RecCon payload Located
Explicitly add AnnVal to RdrName where it is compound
Add Location in IPBind
Add Location to name in IEThingAbs
Add Maybe (Located id,Bool) to Match to track fun_id,infix
This includes converting Match into a record and adding a note about why
the fun_id needs to be replicated in the Match.
Add Location in KindedTyVar
Sort out semi-colons for parsing
- import statements
- stmts
- decls
- decls_cls
- decls_inst
This updates the haddock submodule.
Test Plan: ./validate
Reviewers: hvr, austin, goldfire, simonpj
Reviewed By: simonpj
Subscribers: thomie, carter
Differential Revision: https://phabricator.haskell.org/D538
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This allows having, say, HPC ticks, automatic cost centres and source
notes active at the same time. We especially take care to un-tangle the
infrastructure involved in generating them.
(From Phabricator D169)
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This patch introduces "SourceNote" tickishs that link Core to the
source code that generated it. The idea is to retain these source code
links throughout code transformations so we can eventually relate
object code all the way back to the original source (which we can,
say, encode as DWARF information to allow debugging). We generate
these SourceNotes like other tickshs in the desugaring phase. The
activating command line flag is "-g", consistent with the flag other
compilers use to decide DWARF generation.
Keeping ticks from getting into the way of Core transformations is
tricky, but doable. The changes in this patch produce identical Core
in all cases I tested -- which at this point is GHC, all libraries and
nofib. Also note that this pass creates *lots* of tick nodes, which we
reduce somewhat by removing duplicated and overlapping source
ticks. This will still cause significant Tick "clumps" - a possible
future optimization could be to make Tick carry a list of Tickishs
instead of one at a time.
(From Phabricator D169)
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Summary:
As proposed in [1], this extension introduces a new syntactic form
`static e`, where `e :: a` can be any closed expression. The static form
produces a value of type `StaticPtr a`, which works as a reference that
programs can "dereference" to get the value of `e` back. References are
like `Ptr`s, except that they are stable across invocations of a
program.
The relevant wiki pages are [2, 3], which describe the motivation/ideas
and implementation plan respectively.
[1] Jeff Epstein, Andrew P. Black, and Simon Peyton-Jones. Towards
Haskell in the cloud. SIGPLAN Not., 46(12):118–129, September 2011. ISSN
0362-1340.
[2] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers
[3] https://ghc.haskell.org/trac/ghc/wiki/StaticPointers/ImplementationPlan
Authored-by: Facundo Domínguez <facundo.dominguez@tweag.io>
Authored-by: Mathieu Boespflug <m@tweag.io>
Authored-by: Alexander Vershilov <alexander.vershilov@tweag.io>
Test Plan: `./validate`
Reviewers: hvr, simonmar, simonpj, austin
Reviewed By: simonpj, austin
Subscribers: qnikst, bgamari, mboes, carter, thomie, goldfire
Differential Revision: https://phabricator.haskell.org/D550
GHC Trac Issues: #7015
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Signed-off-by: Austin Seipp <austin@well-typed.com>
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