Deprecate NoRelaxedPolyRec

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

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 2e7e1fe..75f31ca 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -61,7 +61,12 @@ module DynFlags (
 
         -- * Compiler configuration suitable for display to the user
         Printable(..),
-        compilerInfo, rtsIsProfiled
+        compilerInfo
+#ifdef GHCI
+-- Only in stage 2 can we be sure that the RTS 
+-- exposes the appropriate runtime boolean
+        , rtsIsProfiled
+#endif
   ) where
 
 #include "HsVersions.h"
@@ -309,7 +314,8 @@ data ExtensionFlag
    | Opt_RecordPuns
    | Opt_ViewPatterns
    | Opt_GADTs
-   | Opt_RelaxedPolyRec
+   | Opt_OutsideIn
+   | Opt_RelaxedPolyRec                -- Deprecated
    | Opt_NPlusKPatterns
    | Opt_DoAndIfThenElse
 
@@ -596,7 +602,6 @@ defaultObjectTarget
 
 data DynLibLoader
   = Deployable
-  | Wrapped (Maybe String)
   | SystemDependent
   deriving Eq
 
@@ -928,9 +933,6 @@ parseDynLibLoaderMode f d =
  case splitAt 8 f of
    ("deploy", "")       -> d{ dynLibLoader = Deployable }
    ("sysdep", "")       -> d{ dynLibLoader = SystemDependent }
-   ("wrapped", "")      -> d{ dynLibLoader = Wrapped Nothing }
-   ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
-   ("wrapped:", flex)   -> d{ dynLibLoader = Wrapped (Just flex) }
    _                    -> ghcError (CmdLineError ("Unknown dynlib loader: " ++ f))
 
 setDumpPrefixForce f d = d { dumpPrefixForce = f}
@@ -1020,6 +1022,7 @@ optLevelFlags
 
     , ([2],     Opt_LiberateCase)
     , ([2],     Opt_SpecConstr)
+    , ([2],     Opt_RegsGraph)
 
 --     , ([2],     Opt_StaticArgumentTransformation)
 -- Max writes: I think it's probably best not to enable SAT with -O2 for the
@@ -1499,7 +1502,7 @@ type FlagSpec flag
      , Bool -> DynP ())         -- Extra action to run when the flag is found
                                 -- Typically, emit a warning or error
                                 -- True  <=> we are turning the flag on
-                                -- False <=> we are turning the flag on
+                                -- False <=> we are turning the flag off
 
 
 mkFlag :: Bool                  -- ^ True <=> it should be turned on
@@ -1711,7 +1714,10 @@ xFlags = [
   ( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
   ( "DatatypeContexts",                 Opt_DatatypeContexts, nop ),
   ( "MonoLocalBinds",                   Opt_MonoLocalBinds, nop ),
-  ( "RelaxedPolyRec",                   Opt_RelaxedPolyRec, nop ),
+  ( "RelaxedPolyRec",                   Opt_RelaxedPolyRec, 
+    \ turn_on -> if not turn_on 
+                 then deprecate "You can't turn off RelaxedPolyRec any more"
+                 else return () ),
   ( "ExtendedDefaultRules",             Opt_ExtendedDefaultRules, nop ),
   ( "ImplicitParams",                   Opt_ImplicitParams, nop ),
   ( "ScopedTypeVariables",              Opt_ScopedTypeVariables, nop ),
@@ -1749,14 +1755,14 @@ impliedFlags
     , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
     , (Opt_PolymorphicComponents,     Opt_ExplicitForAll)
 
-    , (Opt_GADTs,               Opt_RelaxedPolyRec)  -- We want type-sig variables to
+    , (Opt_GADTs,               Opt_OutsideIn)       -- We want type-sig variables to
                                                      --      be completely rigid for GADTs
 
-    , (Opt_TypeFamilies,        Opt_RelaxedPolyRec)  -- Trac #2944 gives a nice example
+    , (Opt_TypeFamilies,        Opt_OutsideIn)       -- Trac #2944 gives a nice example
     , (Opt_TypeFamilies,        Opt_KindSignatures)  -- Type families use kind signatures
                                                     -- all over the place
 
-    , (Opt_ScopedTypeVariables, Opt_RelaxedPolyRec)  -- Ditto for scoped type variables; see
+    , (Opt_ScopedTypeVariables, Opt_OutsideIn)       -- Ditto for scoped type variables; see
                                                      --      Note [Scoped tyvars] in TcBinds
     , (Opt_ImpredicativeTypes,  Opt_RankNTypes)
 
@@ -1810,12 +1816,13 @@ glasgowExtsFlags = [
            , Opt_GeneralizedNewtypeDeriving
            , Opt_TypeFamilies ]
 
+#ifdef GHCI
 -- Consult the RTS to find whether GHC itself has been built profiled
 -- If so, you can't use Template Haskell
 foreign import ccall unsafe "rts_isProfiled" rtsIsProfiledIO :: IO CInt
 
 rtsIsProfiled :: Bool
-rtsIsProfiled = False -- unsafePerformIO rtsIsProfiledIO /= 0
+rtsIsProfiled = unsafePerformIO rtsIsProfiledIO /= 0
 
 checkTemplateHaskellOk :: Bool -> DynP ()
 checkTemplateHaskellOk turn_on 
@@ -1823,6 +1830,12 @@ checkTemplateHaskellOk turn_on
   = addErr "You can't use Template Haskell with a profiled compiler"
   | otherwise
   = return ()
+#else
+-- In stage 1 we don't know that the RTS has rts_isProfiled, 
+-- so we simply say "ok".  It doesn't matter because TH isn't
+-- available in stage 1 anyway.
+checkTemplateHaskellOk turn_on = return ()
+#endif
 
 {- **********************************************************************
 %*                                                                     *