1. 04 May, 2011 2 commits
  2. 28 Apr, 2011 1 commit
  3. 26 Apr, 2011 1 commit
  4. 20 Apr, 2011 1 commit
  5. 19 Apr, 2011 2 commits
  6. 12 Apr, 2011 1 commit
  7. 02 Apr, 2011 1 commit
  8. 06 Mar, 2011 1 commit
  9. 20 Feb, 2011 1 commit
    • chak@cse.unsw.edu.au.'s avatar
      Added a VECTORISE pragma · f2aaae97
      chak@cse.unsw.edu.au. authored
      - Added a pragma {-# VECTORISE var = exp #-} that prevents
        the vectoriser from vectorising the definition of 'var'.
        Instead it uses the binding '$v_var = exp' to vectorise
        'var'.  The vectoriser checks that the Core type of 'exp'
        matches the vectorised Core type of 'var'.  (It would be
        quite complicated to perform that check in the type checker
        as the vectorisation of a type needs the state of the VM
        monad.)
      - Added parts of a related VECTORISE SCALAR pragma
      - Documented -ddump-vect
      - Added -ddump-vt-trace
      - Some clean up
      f2aaae97
  10. 12 Jan, 2011 1 commit
  11. 10 Jan, 2011 1 commit
    • simonpj@microsoft.com's avatar
      Do dependency analysis when kind-checking type declarations · 6ea06bbf
      simonpj@microsoft.com authored
      This patch fixes Trac #4875.  The main point is to do dependency
      analysis on type and class declarations, and kind-check them in
      dependency order, so as to improve error messages.
      
      This patch means that a few programs that would typecheck before won't
      typecheck any more; but before we were (naughtily) going beyond
      Haskell 98 without any language-extension flags, and Trac #4875
      convinces me that doing so is a Bad Idea.
      
      Here's an example that won't typecheck any more
             data T a b = MkT (a b)
             type F k = T k Maybe
      
      If you look at T on its own you'd default 'a' to kind *->*;
      and then kind-checking would fail on F.
      
      But GHC currently accepts this program beause it looks at
      the *occurrences* of T.
      6ea06bbf
  12. 27 Nov, 2010 1 commit
  13. 22 Dec, 2010 2 commits
    • simonpj@microsoft.com's avatar
      Implement fuzzy matching for the renamer · 820ddd55
      simonpj@microsoft.com authored
      ...so that you get helpful suggestions when you mis-spell a name
      Based on Max's patch in Trac #2442, but heavily refactored.
      820ddd55
    • simonpj@microsoft.com's avatar
      Tidy up rebindable syntax for MDo · ba05282d
      simonpj@microsoft.com authored
      For a long time an 'mdo' expression has had a SyntaxTable
      attached to it.  However, we're busy deprecating SyntaxTables
      in favour of rebindable syntax attached to individual Stmts,
      and MDoExpr was totally inconsistent with DoExpr in this
      regard.
      
      This patch tidies it all up.  Now there's no SyntaxTable on
      MDoExpr, and 'modo' is generally handled much more like 'do'.
      
      There is resulting small change in behaviour: now MonadFix is
      required only if you actually *use* recursion in mdo. This
      seems consistent with the implicit dependency analysis that
      is done for mdo.
      
      Still to do:
        * Deal with #4148 (this patch is on the way)
        * Get rid of the last remaining SyntaxTable on HsCmdTop
      ba05282d
  14. 19 Dec, 2010 1 commit
  15. 10 Dec, 2010 1 commit
    • simonpj@microsoft.com's avatar
      Fix Trac #4534: renamer bug · 78363495
      simonpj@microsoft.com authored
        
      The renamer wasn't attaching the right used-variables to a
      TransformStmt constructor.
      
      The real modification is in RnExpr; the rest is just
      pretty-printing and white space.
      78363495
  16. 27 Nov, 2010 1 commit
  17. 30 Oct, 2010 1 commit
  18. 24 Nov, 2010 2 commits
  19. 15 Nov, 2010 1 commit
  20. 27 Oct, 2010 1 commit
    • Simon Marlow's avatar
      Refactoring and tidyup of HscMain and related things (also fix #1666) · 94bf0d36
      Simon Marlow authored
      While trying to fix #1666 (-Werror aborts too early) I decided to some
      tidyup in GHC/DriverPipeline/HscMain.
      
       - The GhcMonad overloading is gone from DriverPipeline and HscMain
         now.  GhcMonad is now defined in a module of its own, and only
         used in the top-level GHC layer.  DriverPipeline and HscMain
         use the plain IO monad and take HscEnv as an argument.
      
       - WarnLogMonad is gone.  printExceptionAndWarnings is now called
         printException (the old name is deprecated).  Session no longer
         contains warnings.
      
       - HscMain has its own little monad that collects warnings, and also
         plumbs HscEnv around.  The idea here is that warnings are collected
         while we're in HscMain, but on exit from HscMain (any function) we
         check for warnings and either print them (via log_action, so IDEs
         can still override the printing), or turn them into an error if
         -Werror is on.
      
       - GhcApiCallbacks is gone, along with GHC.loadWithLogger.  Thomas
         Schilling told me he wasn't using these, and I don't see a good
         reason to have them.
      
       - there's a new pure API to the parser (suggestion from Neil Mitchell):
            parser :: String
                   -> DynFlags
                   -> FilePath
                   -> Either ErrorMessages (WarningMessages, 
                                            Located (HsModule RdrName))
      94bf0d36
  21. 22 Oct, 2010 1 commit
    • simonpj@microsoft.com's avatar
      Add rebindable syntax for if-then-else · 4e0c994e
      simonpj@microsoft.com authored
      There are two main changes
      
       * New LANGUAGE option RebindableSyntax, which implies NoImplicitPrelude
      
       * if-the-else becomes rebindable, with function name "ifThenElse"
         (but case expressions are unaffected)
      
      Thanks to Sam Anklesaria for doing most of the work here
      4e0c994e
  22. 07 Oct, 2010 1 commit
    • simonpj@microsoft.com's avatar
      Implement auto-specialisation of imported Ids · 92267aa2
      simonpj@microsoft.com authored
      This big-ish patch arranges that if an Id 'f' is 
        * Type-class overloaded 
             f :: Ord a => [a] -> [a]
        * Defined with an INLINABLE pragma
             {-# INLINABLE f #-}
        * Exported from its defining module 'D'
      
      then in any module 'U' that imports D
      
      1. Any call of 'f' at a fixed type will generate 
         (a) a specialised version of f in U
         (b) a RULE that rewrites unspecialised calls to the
             specialised on
      
        e.g. if the call is (f Int dOrdInt xs) then the 
        specialiser will generate
           $sfInt :: [Int] -> [Int]
           $sfInt = <code for f, imported from D, specialised>
           {-# RULE forall d.  f Int d = $sfInt #-}
      
      2. In addition, you can give an explicit {-# SPECIALISE -#}
         pragma for the imported Id
           {-# SPECIALISE f :: [Bool] -> [Bool] #-}
         This too generates a local specialised definition, 
         and the corresponding RULE 
      
      The new RULES are exported from module 'U', so that any module
      importing U will see the specialised versions of 'f', and will
      not re-specialise them.
      
      There's a flag -fwarn-auto-orphan that warns you if the auto-generated
      RULES are orphan rules. It's not in -Wall, mainly to avoid lots of
      error messages with existing packages.
      
      Main implementation changes
      
       - A new flag on a CoreRule to say if it was auto-generated.
         This is persisted across interface files, so there's a small
         change in interface file format.
      
       - Quite a bit of fiddling with plumbing, to get the 
         {-# SPECIALISE #-} pragmas for imported Ids.  In particular, a
         new field tgc_imp_specs in TcGblEnv, to keep the specialise
         pragmas for imported Ids between the typechecker and the desugarer.
      
       - Some new code (although surprisingly little) in Specialise,
         to deal with calls of imported Ids
      92267aa2
  23. 23 Sep, 2010 1 commit
  24. 18 Sep, 2010 1 commit
  25. 15 Sep, 2010 2 commits
  26. 14 Sep, 2010 1 commit
    • Ian Lynagh's avatar
      Remove (most of) the FiniteMap wrapper · e95ee1f7
      Ian Lynagh authored
      We still have
          insertList, insertListWith, deleteList
      which aren't in Data.Map, and
          foldRightWithKey
      which works around the fold(r)WithKey addition and deprecation.
      e95ee1f7
  27. 13 Sep, 2010 1 commit
  28. 24 Aug, 2010 1 commit
  29. 09 Sep, 2010 1 commit
  30. 24 Jul, 2010 1 commit
  31. 01 Jul, 2010 1 commit
    • simonpj@microsoft.com's avatar
      Fix second bug in Trac #4127 · 2c183f9b
      simonpj@microsoft.com authored
      This bug concerned the awkward shadowing we do for 
      Template Haskell declaration brackets.  Lots of
      comments in 
      
        Note [Top-level Names in Template Haskell decl quotes]
      2c183f9b
  32. 24 Jun, 2010 1 commit
  33. 20 Jun, 2010 2 commits
  34. 18 Jun, 2010 1 commit