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* Use TypeLits in the meta-data encoding of GHC.Genericswip/GenericsMetaData2Jose Pedro Magalhaes2014-11-234-308/+137
| | | | | The following wiki page contains more information about this: https://ghc.haskell.org/trac/ghc/wiki/Commentary/Compiler/GenericDeriving#Amoreconservativefirstapproachtothisproblem
* Add -fdefer-typed-holes flag which defers hole errors to runtime.Merijn Verstraaten2014-11-215-30/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: As proposed by Richard on Trac. This patch adds a new flag -fdefer-typed-holes and changes the semantics of the -fno-warn-typed-holes flag. To summarise, by default GHC has typed holes enabled and produces a compile error when it encounters a typed hole. When -fdefer-type-errors OR -fdefer-typed-holes is enabled, hole errors are converted to warnings and result in runtime errors when evaluated. The warning flag -fwarn-typed-holes is on by default. Without -fdefer-type-errors or -fdefer-typed-holes this flag is a no-op, since typed holes are an error under these conditions. If either of the defer flags are enabled (converting typed hole errors into warnings) the -fno-warn-typed-holes flag disables the warnings. This means compilation silently succeeds and evaluating a hole will produce a runtime error. The rationale behind allowing typed holes warnings to be silenced is that tools like Syntastic for vim highlight warnings and hole warnings may be undesirable. Signed-off-by: Merijn Verstraaten <merijn@inconsistent.nl> Test Plan: validate Reviewers: austin, simonpj, thomie Reviewed By: simonpj, thomie Subscribers: Fuuzetsu, thomie, carter Differential Revision: https://phabricator.haskell.org/D442 GHC Trac Issues: #9497 Conflicts: compiler/main/DynFlags.hs
* ghc: allow --show-options and --interactive togetherLennart Kolmodin2014-11-214-593/+663
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Previously 'ghc --show-options' showed all options that GHC can possibly accept. With this patch, it'll only show the options that have effect in non-interactive modes. This change also adds support for using 'ghc --interactive --show-options' which previously was disallowed. This command will show all options that have effect in the interactive mode. The CmdLineParser is updated to know about the GHC modes, and then each flag is annotated with which mode it has effect. This fixes #9259. Test Plan: Try out --show-options with --interactive on the command line. With and without --interactive should give different results. Run the test suite, mode001 has been updated to verify this new flag combination. Reviewers: austin, jstolarek Reviewed By: austin, jstolarek Subscribers: jstolarek, thomie, carter, simonmar Differential Revision: https://phabricator.haskell.org/D337 GHC Trac Issues: #9259
* llvmGen: Compatibility with LLVM 3.5 (re #9142)Ben Gamari2014-11-215-31/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to changes in LLVM 3.5 aliases now may only refer to definitions. Previously to handle symbols defined outside of the current commpilation unit GHC would emit both an `external` declaration, as well as an alias pointing to it, e.g., @stg_BCO_info = external global i8 @stg_BCO_info$alias = alias private i8* @stg_BCO_info Where references to `stg_BCO_info` will use the alias `stg_BCO_info$alias`. This is not permitted under the new alias behavior, resulting in errors resembling, Alias must point to a definition i8* @"stg_BCO_info$alias" To fix this, we invert the naming relationship between aliases and definitions. That is, now the symbol definition takes the name `@stg_BCO_info$def` and references use the actual name, `@stg_BCO_info`. This means the external symbols can be handled by simply emitting an `external` declaration, @stg_BCO_info = external global i8 Whereas in the case of a forward declaration we emit, @stg_BCO_info = alias private i8* @stg_BCO_info$def Reviewed By: austin Differential Revision: https://phabricator.haskell.org/D155
* Update Foreign.* for Safe Haskell now that they're safe by defaultDavid Terei2014-11-214-0/+16
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* Capture original source for literalsAlan Zimmerman2014-11-2123-248/+330
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Make HsLit and OverLitVal have original source strings, for source to source conversions using the GHC API This is part of the ongoing AST Annotations work, as captured in https://ghc.haskell.org/trac/ghc/wiki/GhcAstAnnotations and https://ghc.haskell.org/trac/ghc/ticket/9628#comment:28 The motivations for the literals is as follows ```lang=haskell x,y :: Int x = 0003 y = 0x04 s :: String s = "\x20" c :: Char c = '\x20' d :: Double d = 0.00 blah = x where charH = '\x41'# intH = 0004# wordH = 005## floatH = 3.20# doubleH = 04.16## x = 1 ``` Test Plan: ./sh validate Reviewers: simonpj, austin Reviewed By: simonpj, austin Subscribers: thomie, goldfire, carter, simonmar Differential Revision: https://phabricator.haskell.org/D412 GHC Trac Issues: #9628
* Export more Packages functionsLuite Stegeman2014-11-211-4/+11
| | | | | | | | | | | | | | | | | Summary: This patch exports functions for finding the active package databases and their locations from the Packages module. This allows GHC API clients to use other tools, like Cabal, to gather package information that's not directly available from the binary package db. Reviewers: duncan, austin Reviewed By: austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D514
* Add API AnnotationsAlan Zimmerman2014-11-2119-663/+1832
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: The final design and discussion is captured at https://ghc.haskell.org/trac/ghc/wiki/GhcAstAnnotations This is a proof of concept implementation of a completely separate annotation structure, populated in the parser,and tied to the AST by means of a virtual "node-key" comprising the surrounding SrcSpan and a value derived from the specific constructor used for the node. The key parts of the design are the following. == The Annotations == In `hsSyn/ApiAnnotation.hs` ```lang=haskell type ApiAnns = (Map.Map ApiAnnKey SrcSpan, Map.Map SrcSpan [Located Token]) type ApiAnnKey = (SrcSpan,AnnKeywordId) -- --------------------------------------------------------------------- -- | Retrieve an annotation based on the @SrcSpan@ of the annotated AST -- element, and the known type of the annotation. getAnnotation :: ApiAnns -> SrcSpan -> AnnKeywordId -> Maybe SrcSpan getAnnotation (anns,_) span ann = Map.lookup (span,ann) anns -- |Retrieve the comments allocated to the current @SrcSpan@ getAnnotationComments :: ApiAnns -> SrcSpan -> [Located Token] getAnnotationComments (_,anns) span = case Map.lookup span anns of Just cs -> cs Nothing -> [] -- | Note: in general the names of these are taken from the -- corresponding token, unless otherwise noted data AnnKeywordId = AnnAs | AnnBang | AnnClass | AnnClose -- ^ } or ] or ) or #) etc | AnnComma | AnnDarrow | AnnData | AnnDcolon .... ``` == Capturing in the lexer/parser == The annotations are captured in the lexer / parser by extending PState to include a field In `parser/Lexer.x` ```lang=haskell data PState = PState { .... annotations :: [(ApiAnnKey,SrcSpan)] -- Annotations giving the locations of 'noise' tokens in the -- source, so that users of the GHC API can do source to -- source conversions. } ``` The lexer exposes a helper function to add an annotation ```lang=haskell addAnnotation :: SrcSpan -> Ann -> SrcSpan -> P () addAnnotation l a v = P $ \s -> POk s { annotations = ((AK l a), v) : annotations s } () ``` The parser also has some helper functions of the form ```lang=haskell type MaybeAnn = Maybe (SrcSpan -> P ()) gl = getLoc gj x = Just (gl x) ams :: Located a -> [MaybeAnn] -> P (Located a) ams a@(L l _) bs = (mapM_ (\a -> a l) $ catMaybes bs) >> return a ``` This allows annotations to be captured in the parser by means of ``` ctypedoc :: { LHsType RdrName } : 'forall' tv_bndrs '.' ctypedoc {% hintExplicitForall (getLoc $1) >> ams (LL $ mkExplicitHsForAllTy $2 (noLoc []) $4) [mj AnnForall $1,mj AnnDot $3] } | context '=>' ctypedoc {% ams (LL $ mkQualifiedHsForAllTy $1 $3) [mj AnnDarrow $2] } | ipvar '::' type {% ams (LL (HsIParamTy (unLoc $1) $3)) [mj AnnDcolon $2] } | typedoc { $1 } ``` == Parse result == ```lang-haskell data HsParsedModule = HsParsedModule { hpm_module :: Located (HsModule RdrName), hpm_src_files :: [FilePath], -- ^ extra source files (e.g. from #includes). The lexer collects -- these from '# <file> <line>' pragmas, which the C preprocessor -- leaves behind. These files and their timestamps are stored in -- the .hi file, so that we can force recompilation if any of -- them change (#3589) hpm_annotations :: ApiAnns } -- | The result of successful parsing. data ParsedModule = ParsedModule { pm_mod_summary :: ModSummary , pm_parsed_source :: ParsedSource , pm_extra_src_files :: [FilePath] , pm_annotations :: ApiAnns } ``` This diff depends on D426 Test Plan: sh ./validate Reviewers: austin, simonpj, Mikolaj Reviewed By: simonpj, Mikolaj Subscribers: Mikolaj, goldfire, thomie, carter Differential Revision: https://phabricator.haskell.org/D438 GHC Trac Issues: #9628
* AST changes to prepare for API annotations, for #9628Alan Zimmerman2014-11-2143-612/+857
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: AST changes to prepare for API annotations Add locations to parts of the AST so that API annotations can then be added. The outline of the whole process is captured here https://ghc.haskell.org/trac/ghc/wiki/GhcAstAnnotations This change updates the haddock submodule. Test Plan: sh ./validate Reviewers: austin, simonpj, Mikolaj Reviewed By: simonpj, Mikolaj Subscribers: thomie, goldfire, carter Differential Revision: https://phabricator.haskell.org/D426 GHC Trac Issues: #9628
* Fix #9824 by not warning about unused matches in pattern quotes.Richard Eisenberg2014-11-211-0/+3
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* Fix #1476 by making splice patterns work.Richard Eisenberg2014-11-213-12/+39
| | | | | | | | | Unfortunately, splice patterns in brackets still do not work because we don't run splices in brackets. Without running a pattern splice, we can't know what variables it binds, so we're stuck. This is still a substantial improvement, and it may be the best we can do. Still must document new behavior.
* Fix #7484, checking for good binder names in Convert.Richard Eisenberg2014-11-218-79/+269
| | | | | This commit also refactors a bunch of lexeme-oriented code into a new module Lexeme, and includes a submodule update for haddock.
* Comments onlySimon Peyton Jones2014-11-212-30/+7
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* Fix Trac #9815Simon Peyton Jones2014-11-212-7/+13
| | | | | | | | | | | Dot-dot record-wildcard notation is simply illegal for constructors without any named fields, but that was neither documented nor checked. This patch does so - Make the check in RnPat - Add test T9815 - Fix CmmLayoutStack which was using the illegal form (!) - Document in user manual
* Remove TcMType from compiler_stage2_dll0_MODULESSimon Peyton Jones2014-11-211-1/+0
| | | | | | | | I can't say I really understand this DLL-split thing, but the build fails if I don't remove TcMType here. I've put this in a commit on its own, but it's a knock-on effect of the immediately preceding wave of typechecker changes
* Fix a latent promotion bug in TcSimplify.simplifyInferSimon Peyton Jones2014-11-211-13/+20
| | | | | We weren't promoting enough type variables, with unpredictable consequences. The new code is, if anything, simpler.
* Make the on-the-fly unifier defer forall/forall unificationSimon Peyton Jones2014-11-211-25/+1
| | | | | | This has to be done by the full constraint solver anyway, and it's rare, so there's really no point in doing it twice. This change just deletes some (tricky) code.
* Put the decision of when a unification variable can unify with a polytypeSimon Peyton Jones2014-11-212-33/+33
| | | | | This was being doing independently in two places. Now it's done in one place, TcType.canUnifyWithPolyType
* Implement full co/contra-variant subsumption checking (fixes Trac #9569)Simon Peyton Jones2014-11-2115-150/+312
| | | | | | | | | | | | | | | | | | | | | | | | This is a pretty big patch, but which substantially iproves the subsumption check. Trac #9569 was the presenting example, showing how type inference could depend rather delicately on eta expansion. But there are other less exotic examples; see Note [Co/contra-variance of subsumption checking] in TcUnify. The driving change is to TcUnify.tcSubType. But also * HsWrapper gets a new constructor WpFun, which behaves very like CoFun: if wrap1 :: exp_arg <= act_arg wrap2 :: act_res <= exp_res then WpFun wrap1 wrap2 : (act_arg -> arg_res) <= (exp_arg -> exp_res) * I generalised TcExp.tcApp to call tcSubType on the result, rather than tcUnifyType. I think this just makes it consistent with everything else, notably tcWrapResult. As usual I ended up doing some follow-on refactoring * AmbigOrigin is gone (in favour of TypeEqOrigin) * Combined BindPatSigCtxt and PatSigCxt into one * Improved a bit of error message generation
* Move all the zonk/tidy stuff together into TcMType (refactoring only)Simon Peyton Jones2014-11-213-85/+88
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* Rejig builders for pattern synonyms, especially unlifted onesSimon Peyton Jones2014-11-2112-417/+338
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a pattern synonym is for an unlifted pattern, its "builder" would naturally be a top-level unlifted binding, which isn't allowed. So we give it an extra Void# argument. Our Plan A involved then making *two* Ids for these builders, with some consequential fuss in the desugarer. This was more pain than I liked, so I've re-jigged it. * There is just one builder for a pattern synonym. * It may have an extra Void# arg, but this decision is signalled by the Bool in the psBuilder field. I did the same for the psMatcher field. Both Bools are serialised into interface files, so there is absolutely no doubt whether that extra Void# argument is required. * I renamed "wrapper" to "builder". We have too may "wrappers" * In order to deal with typecchecking occurrences of P in expressions, I refactored the tcInferId code in TcExpr. All of this allowed me to revert 5fe872 "Apply compulsory unfoldings during desugaring, except for `seq` which is special." which turned out to be a rather messy hack in DsBinds
* Comments onlySimon Peyton Jones2014-11-213-3/+2
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* Rewrite Note [Deriving any class]Joachim Breitner2014-11-211-14/+18
| | | | | | Phrases like “Currently, you can...” are going to sound strange in a few years; I rephrased the note to sound less like a proposal and more like an explanation.
* Revert change to alias handling in ppLlvmGlobal introduced in d87fa34, which ↵Luke Iannini2014-11-211-1/+1
| | | | | | requires LLVM 3.6. Signed-off-by: Austin Seipp <austin@well-typed.com>
* Implement #5462 (deriving clause for arbitrary classes)Jose Pedro Magalhaes2014-11-204-25/+99
| | | | | | | | | | | | | | Summary: (this has been submitted on behalf on @dreixel) Reviewers: simonpj, hvr, austin Reviewed By: simonpj, austin Subscribers: goldfire, thomie, carter, dreixel Differential Revision: https://phabricator.haskell.org/D476 GHC Trac Issues: #5462
* Add flag `-fwarn-missing-exported-sigs`Eric Seidel2014-11-203-10/+33
| | | | | | | | | | | | | | | | | | | Summary: add `-fwarn-missing-exported-sigs` to only warn about missing signatures if the name is exported Test Plan: validate, see testsuite/tests/warnings/should_compile/T2526.hs Reviewers: ezyang, austin, thomie Reviewed By: austin, thomie Subscribers: ezyang, thomie, carter Differential Revision: https://phabricator.haskell.org/D482 GHC Trac Issues: #2526 Conflicts: docs/users_guide/7.10.1-notes.xml
* Fix #9209, by reporting an error instead of panicking on bad splices.Richard Eisenberg2014-11-202-31/+41
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* Kill trailing whitespaceJan Stolarek2014-11-203-27/+27
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* Split SynTyCon to SynonymTyCon and FamilyTyConJan Stolarek2014-11-2028-342/+489
| | | | | | | | | | | | | | This patch refactors internal representation of type synonyms and type families by splitting them into two separate data constructors of TyCon data type. The main motivation is is that some fields make sense only for type synonyms and some make sense only for type families. This will be even more true with the upcoming injective type families. There is also some refactoring of names to keep the naming constistent. And thus tc_kind field has become tyConKind and tc_roles has become tcRoles. Both changes are not visible from the outside of TyCon module. Updates haddock submodule Reviewers: simonpj Differential Revision: https://phabricator.haskell.org/D508 GHC Trac Issues: #9812
* Implement typechecker pluginsAdam Gundry2014-11-2015-108/+544
| | | | | | | | | | | | | | | | | | | | Summary: See https://ghc.haskell.org/trac/ghc/wiki/Plugins/TypeChecker This is based on work by Iavor Diatchki and Eric Seidel. Test Plan: validate Reviewers: simonpj, austin Reviewed By: austin Subscribers: gridaphobe, yav, thomie, carter Differential Revision: https://phabricator.haskell.org/D489 Conflicts: docs/users_guide/7.10.1-notes.xml
* Add support for pattern synonym type signatures.Dr. ERDI Gergo2014-11-2012-259/+415
| | | | | | | | | | | | Syntax is of the form pattern P :: (Prov b) => (Req a) => a -> b -> Int -> T a which declares a pattern synonym called `P`, with argument types `a`, `b`, and `Int`, and result type `T a`, with provided context `(Prov b)` and required context `(Req a)`. The Haddock submodule is also updated to use this new syntax in generated docs.
* Update shift/reduce conflict number in parserDr. ERDI Gergo2014-11-201-0/+12
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* Make calling conventions in template haskell Syntax.hs consistent with those ↵Luite Stegeman2014-11-193-26/+39
| | | | | | | | | | | | | | | | | | in ghc ForeignCall.hs this impliments #9703 from ghc trac Test Plan: still needs tests Reviewers: cmsaperstein, ekmett, goldfire, austin Reviewed By: goldfire, austin Subscribers: goldfire, thomie, carter, simonmar Differential Revision: https://phabricator.haskell.org/D353 GHC Trac Issues: #9703
* ghc generates more user-friendly error messagesMike Izbicki2014-11-193-1/+54
| | | | | | | | | | Test Plan: Compiled ghc fine. Opened ghci and fed it invalid code. It gave the improved error messages in response. Reviewers: austin Subscribers: thomie, simonpj, spacekitteh, rwbarton, simonmar, carter Differential Revision: https://phabricator.haskell.org/D201
* arm64: 64bit iOS and SMP support (#7942)Luke Iannini2014-11-199-1/+23
| | | | Signed-off-by: Austin Seipp <austin@well-typed.com>
* compiler/main: fixes #9776Carlos Tomé2014-11-191-1/+2
| | | | | | | | | | | | | | Test Plan: test T9776 under tests/driver Reviewers: jstolarek, austin Reviewed By: jstolarek, austin Subscribers: jstolarek, thomie, carter Differential Revision: https://phabricator.haskell.org/D503 GHC Trac Issues: #9776
* use correct word size for shiftRightLogical and removeOp32Luite Stegeman2014-11-191-16/+26
| | | | | | | | | | | | | | | | | | | | | | Summary: shiftRightLogical used a host sized Word for the intermediate value, which would produce the wrong result when cross compiling to a target with a different word size than the host. removeOp32 used the preprocessor to bake in word size assumptions, rather than getting the target word size from DynFlags Test Plan: validate Reviewers: hvr, rwbarton, carter, austin Reviewed By: austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D502 GHC Trac Issues: #9736
* make TcRnMonad.lhs respect -ddump-to-fileGreg Weber2014-11-194-40/+69
| | | | | | | | | | | | | | | | | | | | | Summary: allows things such as: -ddump-to-file -ddump-splices Test Plan: compile with flags -ddump-to-file -ddump-splices verify that it does output an extra file Try out other flags. I noticed that with -ddump-tc there is some output going to file and some to stdout. Reviewers: hvr, austin Reviewed By: austin Subscribers: simonpj, thomie, carter Differential Revision: https://phabricator.haskell.org/D460 GHC Trac Issues: #9126
* Allow -dead_strip linking on platforms with .subsections_via_symbolsMoritz Angermann2014-11-195-19/+26
| | | | | | | | | | | | | | | | | Summary: This allows to link objects produced with the llvm code generator to be linked with -dead_strip. This applies to at least the iOS cross compiler and OS X compiler. Signed-off-by: Moritz Angermann <moritz@lichtzwerge.de> Test Plan: Create a ffi library and link it with -dead_strip. If the resulting binary does not crash, the patch works as advertised. Reviewers: rwbarton, simonmar, hvr, dterei, mzero, ezyang, austin Reviewed By: dterei, ezyang, austin Subscribers: thomie, mzero, simonmar, ezyang, carter Differential Revision: https://phabricator.haskell.org/D206
* Turn CoreWriter into a newtype; fix commentDavid Feuer2014-11-191-8/+11
| | | | | | | | | | | | | | | Summary: Turn CoreWriter into a newtype. A comment claimed something is forced before returning, but it's actually not. Change comment to match reality. Reviewers: xich, simonpj, ezyang, austin Reviewed By: ezyang, austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D453
* Implement new Foldable methods for HsPatSynDetailsDavid Feuer2014-11-191-1/+20
| | | | | | | | | | | | Summary: Also explicitly define foldl1 and foldr1, which should generally work better with list-specific versions. Reviewers: austin Reviewed By: austin Subscribers: rwbarton, thomie, carter Differential Revision: https://phabricator.haskell.org/D430
* Refactor: use System.FilePath.splitSearchPathThomas Miedema2014-11-192-27/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: To address #2521 ("Trailing colon on GHC_PACKAGE_PATH doesn't work with ghc-pkg"), we were using a custom version of splitSearchPath (e4f46f5de). This solution however caused issue #9698 ("GHC_PACKAGE_PATH should be more lenient for empty paths"). This patch reverts back to System.FilePath.splitSearchPath (fixes #9698) and adresses (#2521) by testing for a trailing search path separators explicitly (instead of implicitly using empty search path elements). Empty paths are now allowed (ignored on Windows, interpreted as current directory on Posix systems), and trailing path separator still tack on the user and system package databases. Also update submodule filepath, which has a version of splitSearchPath which handles quotes in the same way as our custom version did. Test Plan: $ GHC_PACKAGE_PATH=/::/home: ./ghc-pkg list ... db stack: ["/",".","/home","<userdb>","<systemdb>"] ... Reviewers: austin Reviewed By: austin Subscribers: thomie, carter, simonmar Differential Revision: https://phabricator.haskell.org/D414 GHC Trac Issues: #2521, #9698
* Support for "with" renaming syntax, and output a feature flag.Edward Z. Yang2014-11-182-22/+20
| | | | | | | | | | | | | | | | | | | Summary: - Feature flag indicates to Cabal that we support thinning and renaming as it needs. - Support -package "base with (Foo as Bar)" which brings the ordinary modules into scope, as well as adding the renamings to scope. Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: simonpj, austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D485
* When outputting list of available instances, sort it.Edward Z. Yang2014-11-182-2/+18
| | | | | | | | | | | | | | | | | Summary: The intent of this commit is to make test suite cases more stable, so that it doesn't matter what order we load interface files in, the test output doesn't change. Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: simonpj, austin Subscribers: thomie, carter Differential Revision: https://phabricator.haskell.org/D484
* Comments onlySimon Peyton Jones2014-11-183-22/+6
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* Fix detection of GNU gold linker if invoked via gcc with parametersSebastian Dröge2014-11-181-2/+5
| | | | | | | | | | | Previously the linker was called without any commandline parameters to detect whether bfd or gold is used. However the -fuse-ld parameter can be used to switch between gold and bfd and should be taken into account here. Trac #9336 Signed-off-by: Austin Seipp <austin@well-typed.com>
* Disable AVX for LLVM 3.2 by default (#9391)Peter Wortmann2014-11-181-5/+11
| | | | | | | | | Due to a bug LLVM generates a C-like frame pointer prelude for functions that use AVX instructions. This causes programs using the GHC calling convention to crash, therefore we simply disable them. People that want to use AVX should consider upgrading to a more current LLVM version. Signed-off-by: Austin Seipp <austin@well-typed.com>
* Update comment about C helper for foreign exports (#9713)Bertram Felgenhauer2014-11-181-2/+6
| | | | Signed-off-by: Austin Seipp <austin@well-typed.com>
* Outputable instance for IfaceVectInfoMateusz Kowalczyk2014-11-181-0/+10
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* Whitespace onlyMateusz Kowalczyk2014-11-181-8/+8
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