Remove ILX from the GHC altogether (although I left the source file IlxGen in case...

[ghc-hetmet.git] / compiler / stgSyn / CoreToStg.lhs

diff --git a/compiler/stgSyn/CoreToStg.lhs b/compiler/stgSyn/CoreToStg.lhs
index 824caba..31837b9 100644 (file)
--- a/compiler/stgSyn/CoreToStg.lhs
+++ b/compiler/stgSyn/CoreToStg.lhs
@@ -16,13 +16,11 @@ import CoreUtils    ( rhsIsStatic, manifestArity, exprType, findDefault )
 import StgSyn
 
 import Type
+import Coercion         ( mkUnsafeCoercion )
 import TyCon           ( isAlgTyCon )
 import Id
 import Var             ( Var, globalIdDetails, idType )
 import TyCon           ( isUnboxedTupleTyCon, isPrimTyCon, isFunTyCon, isHiBootTyCon )
-#ifdef ILX
-import MkId            ( unsafeCoerceId )
-#endif
 import IdInfo
 import DataCon
 import CostCentre      ( noCCS )
@@ -32,8 +30,8 @@ import Maybes         ( maybeToBool )
 import Name            ( getOccName, isExternalName, nameOccName )
 import OccName         ( occNameString, occNameFS )
 import BasicTypes       ( Arity )
-import Packages                ( HomeModules )
 import StaticFlags     ( opt_RuntimeTypes )
+import PackageConfig   ( PackageId )
 import Outputable
 
 infixr 9 `thenLne`
@@ -140,10 +138,10 @@ for x, solely to put in the SRTs lower down.
 %************************************************************************
 
 \begin{code}
-coreToStg :: HomeModules -> [CoreBind] -> IO [StgBinding]
-coreToStg hmods pgm
+coreToStg :: PackageId -> [CoreBind] -> IO [StgBinding]
+coreToStg this_pkg pgm
   = return pgm'
-  where (_, _, pgm') = coreTopBindsToStg hmods emptyVarEnv pgm
+  where (_, _, pgm') = coreTopBindsToStg this_pkg emptyVarEnv pgm
 
 coreExprToStg :: CoreExpr -> StgExpr
 coreExprToStg expr 
@@ -151,46 +149,46 @@ coreExprToStg expr
 
 
 coreTopBindsToStg
-    :: HomeModules
+    :: PackageId
     -> IdEnv HowBound          -- environment for the bindings
     -> [CoreBind]
     -> (IdEnv HowBound, FreeVarsInfo, [StgBinding])
 
-coreTopBindsToStg hmods env [] = (env, emptyFVInfo, [])
-coreTopBindsToStg hmods env (b:bs)
+coreTopBindsToStg this_pkg env [] = (env, emptyFVInfo, [])
+coreTopBindsToStg this_pkg env (b:bs)
   = (env2, fvs2, b':bs')
   where
        -- env accumulates down the list of binds, fvs accumulates upwards
-       (env1, fvs2, b' ) = coreTopBindToStg hmods env fvs1 b
-       (env2, fvs1, bs') = coreTopBindsToStg hmods env1 bs
+       (env1, fvs2, b' ) = coreTopBindToStg this_pkg env fvs1 b
+       (env2, fvs1, bs') = coreTopBindsToStg this_pkg env1 bs
 
 
 coreTopBindToStg
-       :: HomeModules
+       :: PackageId
        -> IdEnv HowBound
        -> FreeVarsInfo         -- Info about the body
        -> CoreBind
        -> (IdEnv HowBound, FreeVarsInfo, StgBinding)
 
-coreTopBindToStg hmods env body_fvs (NonRec id rhs)
+coreTopBindToStg this_pkg env body_fvs (NonRec id rhs)
   = let 
        env'      = extendVarEnv env id how_bound
        how_bound = LetBound TopLet $! manifestArity rhs
 
         (stg_rhs, fvs') = 
            initLne env (
-              coreToTopStgRhs hmods body_fvs (id,rhs)  `thenLne` \ (stg_rhs, fvs') ->
+              coreToTopStgRhs this_pkg body_fvs (id,rhs)       `thenLne` \ (stg_rhs, fvs') ->
              returnLne (stg_rhs, fvs')
            )
        
        bind = StgNonRec id stg_rhs
     in
-    ASSERT2(manifestArity rhs == stgRhsArity stg_rhs, ppr id)
+    ASSERT2(manifestArity rhs == stgRhsArity stg_rhs, ppr id $$ (ptext SLIT("rhs:")) <+> ppr rhs $$ (ptext SLIT("stg_rhs:"))<+> ppr stg_rhs $$ (ptext SLIT("Manifest:")) <+> (ppr $ manifestArity rhs) $$ (ptext SLIT("STG:")) <+>(ppr $ stgRhsArity stg_rhs) )
     ASSERT2(consistentCafInfo id bind, ppr id)
 --    WARN(not (consistent caf_info bind), ppr id <+> ppr cafs <+> ppCafInfo caf_info)
     (env', fvs' `unionFVInfo` body_fvs, bind)
 
-coreTopBindToStg hmods env body_fvs (Rec pairs)
+coreTopBindToStg this_pkg env body_fvs (Rec pairs)
   = let 
        (binders, rhss) = unzip pairs
 
@@ -200,7 +198,7 @@ coreTopBindToStg hmods env body_fvs (Rec pairs)
 
         (stg_rhss, fvs')
          = initLne env' (
-              mapAndUnzipLne (coreToTopStgRhs hmods body_fvs) pairs
+              mapAndUnzipLne (coreToTopStgRhs this_pkg body_fvs) pairs
                                                `thenLne` \ (stg_rhss, fvss') ->
               let fvs' = unionFVInfos fvss' in
               returnLne (stg_rhss, fvs')
@@ -232,18 +230,18 @@ consistentCafInfo id bind
 
 \begin{code}
 coreToTopStgRhs
-       :: HomeModules
+       :: PackageId
        -> FreeVarsInfo         -- Free var info for the scope of the binding
        -> (Id,CoreExpr)
        -> LneM (StgRhs, FreeVarsInfo)
 
-coreToTopStgRhs hmods scope_fv_info (bndr, rhs)
+coreToTopStgRhs this_pkg scope_fv_info (bndr, rhs)
   = coreToStgExpr rhs          `thenLne` \ (new_rhs, rhs_fvs, _) ->
     freeVarsToLiveVars rhs_fvs `thenLne` \ lv_info ->
     returnLne (mkTopStgRhs is_static rhs_fvs (mkSRT lv_info) bndr_info new_rhs, rhs_fvs)
   where
     bndr_info = lookupFVInfo scope_fv_info bndr
-    is_static = rhsIsStatic hmods rhs
+    is_static = rhsIsStatic this_pkg rhs
 
 mkTopStgRhs :: Bool -> FreeVarsInfo -> SRT -> StgBinderInfo -> StgExpr
        -> StgRhs
@@ -320,18 +318,12 @@ coreToStgExpr (Note (SCC cc) expr)
   = coreToStgExpr expr         `thenLne` ( \ (expr2, fvs, escs) ->
     returnLne (StgSCC cc expr2, fvs, escs) )
 
-#ifdef ILX
--- For ILX, convert (__coerce__ to_ty from_ty e) 
---         into    (coerce to_ty from_ty e)
--- where coerce is real function
-coreToStgExpr (Note (Coerce to_ty from_ty) expr)
-  = coreToStgExpr (mkApps (Var unsafeCoerceId) 
-                         [Type from_ty, Type to_ty, expr])
-#endif
-
 coreToStgExpr (Note other_note expr)
   = coreToStgExpr expr
 
+coreToStgExpr (Cast expr co)
+  = coreToStgExpr expr
+
 -- Cases require a little more real work.
 
 coreToStgExpr (Case scrut bndr _ alts)
@@ -1083,6 +1075,7 @@ myCollectBinders expr
   where
     go bs (Lam b e)          = go (b:bs) e
     go bs e@(Note (SCC _) _) = (reverse bs, e) 
+    go bs (Cast e co)        = go bs e
     go bs (Note _ e)         = go bs e
     go bs e                 = (reverse bs, e)
 
@@ -1095,6 +1088,7 @@ myCollectArgs expr
     go (Var v)          as = (v, as)
     go (App f a) as        = go f (a:as)
     go (Note (SCC _) e) as = pprPanic "CoreToStg.myCollectArgs" (ppr expr)
+    go (Cast e co)      as = go e as
     go (Note n e)       as = go e as
     go _               as = pprPanic "CoreToStg.myCollectArgs" (ppr expr)
 \end{code}