| Commit message (Collapse) | Author | Age | Files | Lines |
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* If the package flags haven't changed, don't do initPackages (which
might take multiple seconds in extreme cases)
* Provide a way to change the log_action without invalidating the
summary cache.
Test Plan: validate
Reviewers: niteria, bgamari, austin, erikd, ezyang
Reviewed By: bgamari
Subscribers: mpickering, rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3392
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Eliminate ListSetOps from imp_trust_pkgs and imp_dep_pkgs
Replace Map with NameEnv in TmOracle
Reviewers: austin, dfeuer, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D3113
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This patch converts the 4 lasting static flags (read from the command
line and unsafely stored in immutable global variables) into dynamic
flags. Most use cases have been converted into reading them from a DynFlags.
In cases for which we don't have easy access to a DynFlags, we read from
'unsafeGlobalDynFlags' that is set at the beginning of each 'runGhc'.
It's not perfect (not thread-safe) but it is still better as we can
set/unset these 4 flags before each run when using GHC API.
Updates haddock submodule.
Rebased and finished by: bgamari
Test Plan: validate
Reviewers: goldfire, erikd, hvr, austin, simonmar, bgamari
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2839
GHC Trac Issues: #8440
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Here we add support to GHCi for StaticPointers. This process begins by
adding remote GHCi messages for adding entries to the static pointer
table. We then collect binders needing SPT entries after linking and
send the interpreter a message adding entries with the appropriate
fingerprints.
Test Plan: `make test TEST=StaticPtr`
Reviewers: facundominguez, mboes, simonpj, simonmar, goldfire, austin,
hvr, erikd
Reviewed By: simonpj, simonmar
Subscribers: RyanGlScott, simonpj, thomie
Differential Revision: https://phabricator.haskell.org/D2504
GHC Trac Issues: #12356
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This patch adds the flag `-ddump-json` which dumps all the compiler
output as a JSON array. This allows tooling to more easily parse GHC's
output to display to users.
The flag is currently experimental and will hopefully be refined for the
next release. In particular I have avoided any changes which involve
significant refactoring and provided what is easy given the current
infrastructure.
Reviewers: austin, bgamari
Reviewed By: bgamari
Subscribers: DanielG, gracjan, thomie
Differential Revision: https://phabricator.haskell.org/D3010
GHC Trac Issues: #13190
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Remove `RunResult(..)`, `runStmt`, and `runStmtWithLocation`. These
were all deprecated and documented as slated for removal in GHC 7.14,
which I figure means 8.2.
See cf7573b8207bbb17c58612f3345e0b17d74cfb58 for an explanation of why
this change was made.
Reviewers: simonpj, hvr, austin, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2949
GHC Trac Issues: #13095
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Summary:
Now that we have -fexternal-interpreter, we can lose most of the GHCI ifdefs.
This was originally added in https://phabricator.haskell.org/D2826
but that led to a compatibility issue with ghc 7.10.x on Windows.
That's fixed here and the revert reverted.
Reviewers: goldfire, hvr, austin, bgamari, Phyx
Reviewed By: Phyx
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2884
GHC Trac Issues: #13008
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This reverts commit 52ba9470a7e85d025dc84a6789aa809cdd68b566.
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Now that we have -fexternal-interpreter, we can lose most of the GHCI ifdefs.
Reviewers: simonmar, goldfire, austin, hvr, bgamari
Reviewed By: simonmar
Subscribers: RyanGlScott, mpickering, angerman, thomie
Differential Revision: https://phabricator.haskell.org/D2826
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Summary:
At the moment, data and type declarations using infix formatting produce the
same AST as those using prefix.
So
type a ++ b = c
and
type (++) a b = c
cannot be distinguished in the parsed source, without looking at the OccName
details of the constructor being defined.
Having access to the OccName requires an additional constraint which explodes
out over the entire AST because of its recursive definitions.
In keeping with moving the parsed source to more directly reflect the source
code as parsed, add a specific flag to the declaration to indicate the fixity,
as used in a Match now too.
Note: this flag is to capture the fixity used for the lexical definition of the
type, primarily for use by ppr and ghc-exactprint.
Updates haddock submodule.
Test Plan: ./validate
Reviewers: mpickering, goldfire, bgamari, austin
Reviewed By: mpickering
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2828
GHC Trac Issues: #12942
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Here we consolidate the pretty-printing logic for types in IfaceType. We
need IfaceType regardless and the printer for Type can be implemented in
terms of that for IfaceType. See #11660.
Note that this is very much a work-in-progress. Namely I still have yet
to ponder how to ease the hs-boot file situation, still need to rip out
more dead code, need to move some of the special cases for, e.g., `*` to
the IfaceType printer, and need to get it to validate. That being said,
it comes close to validating as-is.
Test Plan: Validate
Reviewers: goldfire, austin
Subscribers: goldfire, thomie, simonpj
Differential Revision: https://phabricator.haskell.org/D2528
GHC Trac Issues: #11660
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GHC installs signal handlers in runGhc/runGhcT to handle ^C but it
never uninstalls them.
It can be an issue, especially when using GHC as a library.
Test Plan: validate
Reviewers: bgamari, erikd, austin, simonmar
Reviewed By: bgamari, simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2633
GHC Trac Issues: #4162
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Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
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Test Plan: Validate
Reviewers: austin, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2492
GHC Trac Issues: #12398
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See the user's guide entry or the Note [TcRnExprMode] in TcRnDriver.
Test cases: ghci/scripts/T{10963,11975}
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This isn't strictly necessary for deterministic ABIs.
The results of eltsHpt are consumed in two ways:
1) they determine the order of linking
2) if you track the data flow all the family instances get put in
FamInstEnvs, so the nondeterministic order is forgotten.
3) same for VectInfo stuff
4) same for Annotations
The problem is that I haven't found a nice way to do 2. in
a local way and 1. is nice to have if we went for deterministic
object files. Besides these maps are keyed on ModuleNames so they
should be small relative to other things and the overhead should
be negligible.
As a bonus we also get more specific names.
Test Plan: ./validate
Reviewers: bgamari, austin, hvr, ezyang, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2300
GHC Trac Issues: #4012
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Split out the options needed by the parser from DynFlags, making the
parser more friendly to standalone usage.
Test Plan: validate
Reviewers: simonmar, alanz, bgamari, austin, thomie
Reviewed By: simonmar, alanz, bgamari, thomie
Subscribers: thomie, mpickering
Differential Revision: https://phabricator.haskell.org/D2208
GHC Trac Issues: #10961
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Now GHCi rejects input containing an import declaration and semicolon,
and prints an appropriate error message. Before, the stuff after an
import declaration and semicolon got ignored (most of the time), without
telling the user about it. As the default behaviour of GHCi is to reject
multiple commands in a single input, we extend this behaviour to import
commands.
This patch fixes #10663.
(See https://phabricator.haskell.org/D1518 for the introduction of
`is_import` and `is_decl`.)
Reviewers: austin, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1726
GHC Trac Issues: #10663
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Summary:
The main goal here is enable stack traces in GHCi. After this change,
if you start GHCi like this:
ghci -fexternal-interpreter -prof
(which requires packages to be built for profiling, but not GHC
itself) then the interpreter manages cost-centre stacks during
execution and can produce a stack trace on request. Call locations
are available for all interpreted code, and any compiled code that was
built with the `-fprof-auto` familiy of flags.
There are a couple of ways to get a stack trace:
* `error`/`undefined` automatically get one attached
* `Debug.Trace.traceStack` can be used anywhere, and prints the current
stack
Because the interpreter is running in a separate process, only the
interpreted code is running in profiled mode and the compiler itself
isn't slowed down by profiling.
The GHCi debugger still doesn't work with -fexternal-interpreter,
although this patch gets it a step closer. Most of the functionality
of breakpoints is implemented, but the runtime value introspection is
still not supported.
Along the way I also did some refactoring and added type arguments to
the various remote pointer types in `GHCi.RemotePtr`, so there's
better type safety and documentation in the bridge code between GHC
and ghc-iserv.
Test Plan: validate
Reviewers: bgamari, ezyang, austin, hvr, goldfire, erikd
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1747
GHC Trac Issues: #11047, #11100
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Since GHC 8.1/8.2 only needs to be bootstrap-able by GHC 7.10 and
GHC 8.0 (and GHC 8.2), we can now finally drop all that pre-AMP
compatibility CPP-mess for good!
Reviewers: austin, goldfire, bgamari
Subscribers: goldfire, thomie, erikd
Differential Revision: https://phabricator.haskell.org/D1724
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- Export unicodeAnn from GHC
- unicodeAnn for Annlarrowtail was wrong
- Use actual source for a CImport SourceText
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Summary:
Breakpoints become SCCs, so we have detailed call-stack info for
interpreted code. Currently this only works when GHC is compiled with
-prof, but D1562 (Remote GHCi) removes this constraint so that in the
future call stacks will be available without building your own GHCi.
How can you get a stack trace?
* programmatically: GHC.Stack.currentCallStack
* I've added an experimental :where command that shows the stack when
stopped at a breakpoint
* `error` attaches a call stack automatically, although since calls to
`error` are often lifted out to the top level, this is less useful
than it might be (ImplicitParams still works though).
* Later we might attach call stacks to all exceptions
Other related changes in this diff:
* I reduced the number of places that get ticks attached for
breakpoints. In particular there was a breakpoint around the whole
declaration, which was often redundant because it bound no variables.
This reduces clutter in the stack traces and speeds up compilation.
* I tidied up some RealSrcSpan stuff in InteractiveUI, and made a few
other small cleanups
Test Plan: validate
Reviewers: ezyang, bgamari, austin, hvr
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1595
GHC Trac Issues: #11047
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Summary:
(Apologies for the size of this patch, I couldn't make a smaller one
that was validate-clean and also made sense independently)
(Some of this code is derived from GHCJS.)
This commit adds support for running interpreted code (for GHCi and
TemplateHaskell) in a separate process. The functionality is
experimental, so for now it is off by default and enabled by the flag
-fexternal-interpreter.
Reaosns we want this:
* compiling Template Haskell code with -prof does not require
building the code without -prof first
* when GHC itself is profiled, it can interpret unprofiled code, and
the same applies to dynamic linking. We would no longer need to
force -dynamic-too with TemplateHaskell, and we can load ordinary
objects into a dynamically-linked GHCi (and vice versa).
* An unprofiled GHCi can load and run profiled code, which means it
can use the stack-trace functionality provided by profiling without
taking the performance hit on the compiler that profiling would
entail.
Amongst other things; see
https://ghc.haskell.org/trac/ghc/wiki/RemoteGHCi for more details.
Notes on the implementation are in Note [Remote GHCi] in the new
module compiler/ghci/GHCi.hs. It probably needs more documenting,
feel free to suggest things I could elaborate on.
Things that are not currently implemented for -fexternal-interpreter:
* The GHCi debugger
* :set prog, :set args in GHCi
* `recover` in Template Haskell
* Redirecting stdin/stdout for the external process
These are all doable, I just wanted to get to a working validate-clean
patch first.
I also haven't done any benchmarking yet. I expect there to be slight hit
to link times for byte code and some penalty due to having to
serialize/deserialize TH syntax, but I don't expect it to be a serious
problem. There's also lots of low-hanging fruit in the byte code
generator/linker that we could exploit to speed things up.
Test Plan:
* validate
* I've run parts of the test suite with
EXTRA_HC_OPTS=-fexternal-interpreter, notably tests/ghci and tests/th.
There are a few failures due to the things not currently implemented
(see above).
Reviewers: simonpj, goldfire, ezyang, austin, alanz, hvr, niteria, bgamari, gibiansky, luite
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1562
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This exposes `template-haskell` functions for querying the language
extensions which are enabled when compiling a module,
- an `isExtEnabled` function to check whether an extension is enabled
- an `extsEnabled` function to obtain a full list of enabled extensions
To avoid code duplication this adds a `GHC.LanguageExtensions` module to
`ghc-boot` and moves `DynFlags.ExtensionFlag` into it. A happy
consequence of this is that the ungainly `DynFlags` lost around 500
lines. Moreover, flags corresponding to language extensions are now
clearly distinguished from other flags due to the `LangExt.*` prefix.
Updates haddock submodule.
This fixes #10820.
Test Plan: validate
Reviewers: austin, spinda, hvr, goldfire, alanz
Reviewed By: goldfire
Subscribers: mpickering, RyanGlScott, hvr, simonpj, thomie
Differential Revision: https://phabricator.haskell.org/D1200
GHC Trac Issues: #10820
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This implements the ideas originally put forward in
"System FC with Explicit Kind Equality" (ICFP'13).
There are several noteworthy changes with this patch:
* We now have casts in types. These change the kind
of a type. See new constructor `CastTy`.
* All types and all constructors can be promoted.
This includes GADT constructors. GADT pattern matches
take place in type family equations. In Core,
types can now be applied to coercions via the
`CoercionTy` constructor.
* Coercions can now be heterogeneous, relating types
of different kinds. A coercion proving `t1 :: k1 ~ t2 :: k2`
proves both that `t1` and `t2` are the same and also that
`k1` and `k2` are the same.
* The `Coercion` type has been significantly enhanced.
The documentation in `docs/core-spec/core-spec.pdf` reflects
the new reality.
* The type of `*` is now `*`. No more `BOX`.
* Users can write explicit kind variables in their code,
anywhere they can write type variables. For backward compatibility,
automatic inference of kind-variable binding is still permitted.
* The new extension `TypeInType` turns on the new user-facing
features.
* Type families and synonyms are now promoted to kinds. This causes
trouble with parsing `*`, leading to the somewhat awkward new
`HsAppsTy` constructor for `HsType`. This is dispatched with in
the renamer, where the kind `*` can be told apart from a
type-level multiplication operator. Without `-XTypeInType` the
old behavior persists. With `-XTypeInType`, you need to import
`Data.Kind` to get `*`, also known as `Type`.
* The kind-checking algorithms in TcHsType have been significantly
rewritten to allow for enhanced kinds.
* The new features are still quite experimental and may be in flux.
* TODO: Several open tickets: #11195, #11196, #11197, #11198, #11203.
* TODO: Update user manual.
Tickets addressed: #9017, #9173, #7961, #10524, #8566, #11142.
Updates Haddock submodule.
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Reviewers: austin, thomie, bgamari
Reviewed By: thomie, bgamari
Subscribers: mpickering, thomie
Differential Revision: https://phabricator.haskell.org/D1518
GHC Trac Issues: #9015
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Summary:
This reverts commit 06d46b1e4507e09eb2a7a04998a92610c8dc6277.
This also has a Haddock submodule update.
Test Plan: validate
Reviewers: simonpj, austin, bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1475
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I don't really understand this. GHC.hs had:
module GHC( ..., module HsSyn, ... ) where
import HsSyn
import qualified HsSyn -- hack as we want to reexport the whole module
GHC now reports the 'import qualified' line as redundant; and it certainly
is, because 'import HsSyn' brings everything into scope qualified *and*
unqualified. I have no idea why the "hack" was necessary before, but
following my refactoring of tcg_used_gres (previous commit), it's reported
as redundant, so I've deleted it.
I'm making it a separate commit because it seems a bit mysterious and I
wanted to draw attention to it.
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This implements DuplicateRecordFields, the first part of the
OverloadedRecordFields extension, as described at
https://ghc.haskell.org/trac/ghc/wiki/Records/OverloadedRecordFields/DuplicateRecordFields
This includes fairly wide-ranging changes in order to allow multiple
records within the same module to use the same field names. Note that
it does *not* allow record selector functions to be used if they are
ambiguous, and it does not have any form of type-based disambiguation
for selectors (but it does for updates). Subsequent parts will make
overloading selectors possible using orthogonal extensions, as
described on the wiki pages. This part touches quite a lot of the
codebase, and requires changes to several GHC API datatypes in order
to distinguish between field labels (which may be overloaded) and
selector function names (which are always unique).
The Haddock submodule has been adapted to compile with the GHC API
changes, but it will need further work to properly support modules
that use the DuplicateRecordFields extension.
Test Plan: New tests added in testsuite/tests/overloadedrecflds; these
will be extended once the other parts are implemented.
Reviewers: goldfire, bgamari, simonpj, austin
Subscribers: sjcjoosten, haggholm, mpickering, bgamari, tibbe, thomie,
goldfire
Differential Revision: https://phabricator.haskell.org/D761
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Comes with Haddock submodule update.
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
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The Windows preprocessor code calls `runInteractiveProcess` but does
not check if an exception is thrown.
`runInteractiveProcess` calls `CreateProcess` which when given a format
the system loader does not know about
will throw an exception. This is what makes #9399 fail.
Ultimately we should not use any `CreateProcess` based calls but
instead `ShellExecuteEx` as this would allow
us to run applications that the shell knows about instead of just the
loader. More details on #365.
This patch removes `PhaseFailed` and throws `ProgramError` instead.
`PhaseFailed` was largely unneeded since it never gave
very useful information aside from the `errorcode` which was almost
always `1`. `IOErrors` have also been eliminated and `GhcExceptions`
thrown in their place wherever possible.
Updates haddock submodule.
Test Plan:
`./validate` to make sure anything didn't break and
`make TESTS="T365"` to test that an error is now properly thrown
Reviewers: austin, thomie, bgamari
Reviewed By: thomie, bgamari
Subscribers: #ghc_windows_task_force
Differential Revision: https://phabricator.haskell.org/D1256
GHC Trac Issues: #365
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This patch drops the file level distinction between hs-boot and hsig;
we figure out which one we are compiling based on whether or not there
is a corresponding hs file lying around.
To make the "import A" syntax continue to work for bare hs-boot
files, we also introduce hs-boot merging, which takes an A.hi-boot
and converts it to an A.hi when there is no A.hs file in scope.
This will be generalized in Backpack to merge multiple A.hi files together;
which means we can jettison the "load multiple interface files" functionality.
This works automatically for --make, but for one-shot compilation
we need a new mode: ghc --merge-requirements A will generate an A.hi/A.o
from a local A.hi-boot file; Backpack will extend this mechanism further.
Has Haddock submodule update to deal with change in msHsFilePath behavior.
- This commit drops support for the hsig extension. Can
we support it? It's annoying because the finder code is
written with the assumption that where there's an hs-boot
file, there's always an hs file too. To support hsig, you'd
have to probe two locations. Easier to just not support it.
- #10333 affects us, modifying an hs-boot still doesn't trigger
recomp.
- See compiler/main/Finder.hs: this diff is very skeevy, but
it seems to work.
- This code cunningly doesn't drop hs-boot files from the
"drop hs-boot files" module graph, if they don't have a
corresponding hs file. I have no idea if this actually is useful.
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Test Plan: validate
Reviewers: simonpj, austin, bgamari, spinda
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1098
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This reverts commit 214596de224afa576a9c295bcf53c6941d6892e0.
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For details see #6018, Phab:D202 and the wiki page:
https://ghc.haskell.org/trac/ghc/wiki/InjectiveTypeFamilies
This patch also wires-in Maybe data type and updates haddock submodule.
Test Plan: ./validate
Reviewers: simonpj, goldfire, austin, bgamari
Subscribers: mpickering, bgamari, alanz, thomie, goldfire, simonmar,
carter
Differential Revision: https://phabricator.haskell.org/D202
GHC Trac Issues: #6018
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While we have always had makeDynFlagsConsistent to enforce a variety of
consistency invariants on DynFlags, it hasn't been widely used.
GHC.Main, for instance, ignored it entirely. This leads to issues like
Trac #10549, where an OPTIONS_GHC pragma introduced an inconsistency,
leading to a perplexing crash later in compilation.
Here I add consistency checks in GHC.Main.set{Session,Program}DynFlags,
closing this hole.
Fixes #10549.
Test Plan: Validate with T10549
Reviewers: austin
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1128
GHC Trac Issues: #10549
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This reverts commit bac927b9770ff769128b66d13a3e72bf5a9bc514.
As it turns out, we need these commits for separate compilation
and accurate dependency tracking. So back in they go!
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Summary:
This commit brings following changes and fixes:
* Implement parseExpr and compileParsedExpr;
* Fix compileExpr and dynCompilerExpr, which returned `()` for empty expr;
* Fix :def and :cmd, which didn't work if `IO` or `String` is not in scope;
* Use GHCiMonad instead IO in :def and :cmd;
* Clean PrelInfo: delete dead comment and duplicate entries, add assertion.
See new tests for more details.
Test Plan: ./validate
Reviewers: austin, dterei, simonmar
Reviewed By: simonmar
Subscribers: thomie, bgamari
Differential Revision: https://phabricator.haskell.org/D974
GHC Trac Issues: #10508
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This reverts commit a7524eaed33324e2155c47d4a705bef1d70a2b5b.
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When using GHCi, we explicitly reject optimization, because the
compilers optimization passes can introduce unboxed tuples, which the
interpreter is not able to handle. But this goes the other way too: using
GHCi on optimized code may cause the optimizer to float out breakpoints
that the interpreter introduces. This manifests itself in weird ways,
particularly if you as an API client use custom DynFlags to introduce
optimization in combination with HscInterpreted.
It turns out we weren't checking for consistent DynFlag settings when
doing `setSessionDynFlags`, as #10052 showed. While the main driver
handled it in `DynFlags` via `parseDynamicFlags`, we didn't check this
elsewhere.
This does a little refactoring to split out some of the common code, and
immunizes the various `DynFlags` utilities in the `GHC` module from this
particular bug. We should probably be checking other general invariants
too.
This fixes #10052, and adds some notes about the behavior in `GHC` and
`FloatOut`
As a bonus, expose `warningMsg` from `ErrUtils` as a helper since it
didn't exist (somehow).
Signed-off-by: Austin Seipp <austin@well-typed.com>
Reviewed By: edsko
Differential Revision: https://phabricator.haskell.org/D727
GHC Trac Issues: #10052
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Apparently my machine likes this commit, but Harbormaster does not?
This reverts commit b199536be25ea046079587933cc73d0a948a0626.
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When using GHCi, we explicitly reject optimization, because the
compilers optimization passes can introduce unboxed tuples, which the
interpreter is not able to handle. But this goes the other way too: using
GHCi on optimized code may cause the optimizer to float out breakpoints
that the interpreter introduces. This manifests itself in weird ways,
particularly if you as an API client use custom DynFlags to introduce
optimization in combination with HscInterpreted.
It turns out we weren't checking for consistent DynFlag settings when
doing `setSessionDynFlags`, as #10052 showed. While the main driver
handled it in `DynFlags` via `parseDynamicFlags`, we didn't check this
elsewhere.
This does a little refactoring to split out some of the common code, and
immunizes the various `DynFlags` utilities in the `GHC` module from this
particular bug. We should probably be checking other general invariants
too.
This fixes #10052, and adds some notes about the behavior in `GHC` and
`FloatOut`
As a bonus, expose `warningMsg` from `ErrUtils` as a helper since it
didn't exist (somehow).
Signed-off-by: Austin Seipp <austin@well-typed.com>
Reviewed By: edsko
Differential Revision: https://phabricator.haskell.org/D727
GHC Trac Issues: #10052
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This caused print007 to fail, so I guess I botched this more than I
thought. This is a combination of reverting:
"Fix build breakage from 9736c042", commit f35d621.
"compiler: make sure we reject -O + HscInterpreted", commit 9736c04.
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Instances in Safe Inferred modules weren't marked being marked as coming
from a Safe module.
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When using GHCi, we explicitly reject optimization, because the
compilers optimization passes can introduce unboxed tuples, which the
interpreter is not able to handle. But this goes the other way too: using
GHCi on optimized code may cause the optimizer to float out breakpoints
that the interpreter introduces. This manifests itself in weird ways,
particularly if you as an API client use custom DynFlags to introduce
optimization in combination with HscInterpreted.
It turns out we weren't checking for consistent DynFlag settings when
doing `setSessionDynFlags`, as #10052 showed. While the main driver
handled it in `DynFlags` via `parseDynamicFlags`, we didn't check this
elsewhere.
This does a little refactoring to split out some of the common code, and
immunizes the various `DynFlags` utilities in the `GHC` module from this
particular bug. We should probably be checking other general invariants
too.
This fixes #10052, and adds some notes about the behavior in `GHC` and
`FloatOut`
As a bonus, expose `warningMsg` from `ErrUtils` as a helper since it
didn't exist (somehow).
Signed-off-by: Austin Seipp <austin@well-typed.com>
Reviewed By: edsko
Differential Revision: https://phabricator.haskell.org/D727
GHC Trac Issues: #10052
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The point of this commit is to make the memory allocation statistic
from :set +s in GHCi a lot more accurate. Currently it uses the total
allocation figure calculated by the RTS, which is only updated during
GC, so can be wrong by an arbitrary amount. The fix is to the the
per-thread allocation counter that was introduced for allocation
limits.
This required changes to the GHC API, because we now have to return
the allocation value from each evaluation. Rather than just change
the API, I introduced a new API and deprecated the old one. The new
one is simpler and more extensible, so hopefully we won't need to make
this transition in the future. See GHC.hs for details.
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Summary:
A common pattern when programming with signatures is to combine multiple
signatures together (signature linking). We achieve this by making it
not-an-error to have multiple, distinct interface files for the same module
name, as long as they have the same backing implementation. When a user
imports a module name, they get ALL matching signatures dumped into their
scope.
On the way, I refactored the module finder code, which now distinguishes
between exact finds (when you had a 'Module') and regular finds (when
you had a 'ModuleName'). I also refactored the package finder code to
use a Monoid instance on LookupResult to collect together various results.
ToDo: At the moment, if a signature is declared in the local package,
it completely overrides any remote signatures. Eventually, we'll want
to also pull in the remote signatures (or even override the local signature,
if the full implementation is available.) There are bunch of ToDos in the
code for what to do once this is done.
ToDo: At the moment, whenever a module name lookup occurs in GHCi and we
would have seen a signature, we instead continue and return the Module
for the backing implementation. This is correct for most cases, but there
might be some situations where we want something a little more fine-grained
(e.g. :browse should only list identifiers which are available through
the in-scope signatures, and not ALL of them.)
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Test Plan: validate
Reviewers: simonpj, hvr, austin
Subscribers: carter, thomie
Differential Revision: https://phabricator.haskell.org/D790
GHC Trac Issues: #9252
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Summary: It looks like during .lhs -> .hs switch the comments were not updated. So doing exactly that.
Reviewers: austin, jstolarek, hvr, goldfire
Reviewed By: austin, jstolarek
Subscribers: thomie, goldfire
Differential Revision: https://phabricator.haskell.org/D621
GHC Trac Issues: #9986
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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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Provoked by questions from Johan
- Improve comments, fix misleading stuff
- Add commented synonyms for HsSrcBang, HsImplBang, and use them throughout
- Rename HsUserBang to HsSrcBang
- Rename dataConStrictMarks to dataConSrcBangs
dataConRepBangs to dataConImplBangs
This renaming affects Haddock in a trivial way, hence submodule update
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