merge GHC HEAD

[ghc-hetmet.git] / compiler / main / DynFlags.hs

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 69185db..7e5dff0 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -204,6 +204,13 @@ data DynFlag
    | Opt_DoCmmLinting
    | Opt_DoAsmLinting
 
+   | Opt_F_coqpass                      -- run the core-to-core coqPass, but don't change anything (just "parse/unparse")
+   | Opt_F_skolemize                    -- run the core-to-core coqPass, skolemizing the proof
+   | Opt_F_flatten                      -- run the core-to-core coqPass, flattening the proof
+   | Opt_F_simpleopt_before_flatten     -- run the "simplPgmOpt" before the coqPass
+   | Opt_D_dump_proofs                  -- dump natural deduction typing proof of the coqpass input
+   | Opt_D_coqpass                      -- run the core-to-string coqPass and dumps the result
+
    | Opt_WarnIsError                    -- -Werror; makes warnings fatal
    | Opt_WarnDuplicateExports
    | Opt_WarnHiShadows
@@ -274,7 +281,6 @@ data DynFlag
    -- misc opts
    | Opt_Pp
    | Opt_ForceRecomp
-   | Opt_DryRun
    | Opt_ExcessPrecision
    | Opt_EagerBlackHoling
    | Opt_ReadUserPackageConf
@@ -334,10 +340,10 @@ data ExtensionFlag
    | Opt_GHCForeignImportPrim
    | Opt_ParallelArrays                 -- Syntactic support for parallel arrays
    | Opt_Arrows                         -- Arrow-notation syntax
+   | Opt_ModalTypes                     -- Heterogeneous Metaprogramming (modal types, brackets, escape, CSP)
    | Opt_TemplateHaskell
    | Opt_QuasiQuotes
    | Opt_ImplicitParams
-   | Opt_Generics                      -- "Derivable type classes"
    | Opt_ImplicitPrelude
    | Opt_ScopedTypeVariables
    | Opt_UnboxedTuples
@@ -359,6 +365,9 @@ data ExtensionFlag
    | Opt_DeriveFunctor
    | Opt_DeriveTraversable
    | Opt_DeriveFoldable
+   | Opt_DeriveGeneric            -- Allow deriving Generic/1
+   | Opt_DefaultSignatures        -- Allow extra signatures for defmeths
+   | Opt_Generics                 -- Old generic classes, now deprecated
 
    | Opt_TypeSynonymInstances
    | Opt_FlexibleContexts
@@ -763,9 +772,9 @@ defaultDynFlags mySettings =
         maxSimplIterations      = 4,
         shouldDumpSimplPhase    = Nothing,
         ruleCheck               = Nothing,
-        specConstrThreshold     = Just 200,
+        specConstrThreshold     = Just 2000,
         specConstrCount         = Just 3,
-        liberateCaseThreshold   = Just 200,
+        liberateCaseThreshold   = Just 2000,
         floatLamArgs            = Just 0,      -- Default: float only if no fvs
         strictnessBefore        = [],
 
@@ -874,7 +883,11 @@ languageExtensions Nothing
       -- But NB it's implied by GADTs etc
       -- SLPJ September 2010
     : Opt_NondecreasingIndentation -- This has been on by default for some time
-    : languageExtensions (Just Haskell2010)
+    : delete Opt_DatatypeContexts  -- The Haskell' committee decided to
+                                   -- remove datatype contexts from the
+                                   -- language:
+   -- http://www.haskell.org/pipermail/haskell-prime/2011-January/003335.html
+      (languageExtensions (Just Haskell2010))
 
 languageExtensions (Just Haskell98)
     = [Opt_ImplicitPrelude,
@@ -1150,7 +1163,7 @@ allFlags = map ('-':) $
 --------------- The main flags themselves ------------------
 dynamic_flags :: [Flag (CmdLineP DynFlags)]
 dynamic_flags = [
-    Flag "n"        (NoArg (setDynFlag Opt_DryRun))
+    Flag "n"        (NoArg (addWarn "The -n flag is deprecated and no longer has any effect"))
   , Flag "cpp"      (NoArg (setExtensionFlag Opt_Cpp)) 
   , Flag "F"        (NoArg (setDynFlag Opt_Pp)) 
   , Flag "#include" 
@@ -1359,6 +1372,14 @@ dynamic_flags = [
                                               setVerbosity (Just 2)))
   , Flag "dfaststring-stats"       (NoArg (setDynFlag Opt_D_faststring_stats))
 
+        ------ Coq-in-GHC ---------------------------
+  , Flag "ddump-proofs"            (NoArg (setDynFlag Opt_D_dump_proofs))
+  , Flag "ddump-coqpass"           (NoArg (setDynFlag Opt_D_coqpass))
+  , Flag "fcoqpass"                (NoArg (setDynFlag Opt_F_coqpass))
+  , Flag "fsimpleopt-before-flatten"                (NoArg (setDynFlag Opt_F_simpleopt_before_flatten))
+  , Flag "fflatten"                (NoArg (do { setDynFlag Opt_F_coqpass ; setDynFlag Opt_F_flatten }))
+  , Flag "funsafe-skolemize"       (NoArg (do { setDynFlag Opt_F_coqpass ; setDynFlag Opt_F_flatten ; setDynFlag Opt_F_skolemize }))
+
         ------ Machine dependant (-m<blah>) stuff ---------------------------
 
   , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
@@ -1660,10 +1681,12 @@ xFlags = [
     deprecatedForExtension "DoRec"),
   ( "DoRec",                            Opt_DoRec, nop ),    -- Enables 'rec' keyword 
   ( "Arrows",                           Opt_Arrows, nop ),
+  ( "ModalTypes",                      Opt_ModalTypes, nop ),
   ( "ParallelArrays",                   Opt_ParallelArrays, nop ),
   ( "TemplateHaskell",                  Opt_TemplateHaskell, checkTemplateHaskellOk ),
   ( "QuasiQuotes",                      Opt_QuasiQuotes, nop ),
-  ( "Generics",                         Opt_Generics, nop ),
+  ( "Generics",                         Opt_Generics,
+    \ _ -> deprecate "it does nothing; look into -XDefaultSignatures and -XDeriveGeneric for generic programming support." ),
   ( "ImplicitPrelude",                  Opt_ImplicitPrelude, nop ),
   ( "RecordWildCards",                  Opt_RecordWildCards, nop ),
   ( "NamedFieldPuns",                   Opt_RecordPuns, nop ),
@@ -1705,6 +1728,8 @@ xFlags = [
   ( "DeriveFunctor",                    Opt_DeriveFunctor, nop ),
   ( "DeriveTraversable",                Opt_DeriveTraversable, nop ),
   ( "DeriveFoldable",                   Opt_DeriveFoldable, nop ),
+  ( "DeriveGeneric",                    Opt_DeriveGeneric, nop ),
+  ( "DefaultSignatures",                Opt_DefaultSignatures, nop ),
   ( "TypeSynonymInstances",             Opt_TypeSynonymInstances, nop ),
   ( "FlexibleContexts",                 Opt_FlexibleContexts, nop ),
   ( "FlexibleInstances",                Opt_FlexibleInstances, nop ),
@@ -1752,6 +1777,11 @@ impliedFlags
     , (Opt_FlexibleInstances,         turnOn, Opt_TypeSynonymInstances)
     , (Opt_FunctionalDependencies,    turnOn, Opt_MultiParamTypeClasses)
 
+    , (Opt_ModalTypes,                 turnOn,  Opt_RankNTypes)
+    , (Opt_ModalTypes,                 turnOn,  Opt_ExplicitForAll)
+    --, (Opt_ModalTypes,                 turnOn,  Opt_RebindableSyntax)
+    , (Opt_ModalTypes,                 turnOff, Opt_MonomorphismRestriction)
+
     , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude)      -- NB: turn off!
 
     , (Opt_GADTs,            turnOn, Opt_GADTSyntax)
@@ -1885,6 +1915,7 @@ glasgowExtsFlags = [
            , Opt_DeriveFunctor
            , Opt_DeriveFoldable
            , Opt_DeriveTraversable
+           , Opt_DeriveGeneric
            , Opt_FlexibleContexts
            , Opt_FlexibleInstances
            , Opt_ConstrainedClassMethods