+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
module VectUtils (
collectAnnTypeBinders, collectAnnTypeArgs, isAnnTypeArg,
collectAnnValBinders,
- mkDataConTag,
- splitClosureTy,
- mkPRepr, mkToPRepr, mkFromPRepr,
+ mkDataConTag, mkDataConTagLit,
+
+ mkBuiltinCo,
mkPADictType, mkPArrayType, mkPReprType,
+
parrayReprTyCon, parrayReprDataCon, mkVScrut,
- prDictOfType,
+ prDFunOfTyCon,
paDictArgType, paDictOfType, paDFunType,
- paMethod, lengthPA, replicatePA, emptyPA, liftPA,
+ paMethod, mkPR, lengthPA, replicatePA, emptyPA, liftPA,
polyAbstract, polyApply, polyVApply,
hoistBinding, hoistExpr, hoistPolyVExpr, takeHoisted,
buildClosure, buildClosures,
import DsUtils
import CoreSyn
import CoreUtils
+import Coercion
import Type
import TypeRep
import TyCon
-import DataCon ( DataCon, dataConWrapId, dataConTag )
+import DataCon
import Var
import Id ( mkWildId )
import MkId ( unwrapFamInstScrut )
import Name ( Name )
import PrelNames
import TysWiredIn
+import TysPrim ( intPrimTy )
import BasicTypes ( Boxity(..) )
+import Literal ( Literal, mkMachInt )
import Outputable
import FastString
+import Data.List ( zipWith4 )
import Control.Monad ( liftM, liftM2, zipWithM_ )
collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
isAnnTypeArg (_, AnnType t) = True
isAnnTypeArg _ = False
-mkDataConTag :: DataCon -> CoreExpr
-mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc]
-
-splitUnTy :: String -> Name -> Type -> Type
-splitUnTy s name ty
- | Just (tc, [ty']) <- splitTyConApp_maybe ty
- , tyConName tc == name
- = ty'
-
- | otherwise = pprPanic s (ppr ty)
+mkDataConTagLit :: DataCon -> Literal
+mkDataConTagLit con
+ = mkMachInt . toInteger $ dataConTag con - fIRST_TAG
-splitBinTy :: String -> Name -> Type -> (Type, Type)
-splitBinTy s name ty
- | Just (tc, [ty1, ty2]) <- splitTyConApp_maybe ty
- , tyConName tc == name
- = (ty1, ty2)
-
- | otherwise = pprPanic s (ppr ty)
-
-splitCrossTy :: Type -> (Type, Type)
-splitCrossTy = splitBinTy "splitCrossTy" ndpCrossTyConName
-
-splitPlusTy :: Type -> (Type, Type)
-splitPlusTy = splitBinTy "splitSumTy" ndpPlusTyConName
-
-splitEmbedTy :: Type -> Type
-splitEmbedTy = splitUnTy "splitEmbedTy" embedTyConName
+mkDataConTag :: DataCon -> CoreExpr
+mkDataConTag con = mkIntLitInt (dataConTag con - fIRST_TAG)
-splitClosureTy :: Type -> (Type, Type)
-splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
+splitPrimTyCon :: Type -> Maybe TyCon
+splitPrimTyCon ty
+ | Just (tycon, []) <- splitTyConApp_maybe ty
+ , isPrimTyCon tycon
+ = Just tycon
-splitPArrayTy :: Type -> Type
-splitPArrayTy = splitUnTy "splitPArrayTy" parrayTyConName
+ | otherwise = Nothing
mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
mkBuiltinTyConApp get_tc tys
where
mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-mkPRepr :: [[Type]] -> VM Type
-mkPRepr [] = return unitTy
-mkPRepr tys
- = do
- embed <- builtin embedTyCon
- cross <- builtin crossTyCon
- plus <- builtin plusTyCon
-
- let mk_embed ty = mkTyConApp embed [ty]
- mk_cross ty1 ty2 = mkTyConApp cross [ty1, ty2]
- mk_plus ty1 ty2 = mkTyConApp plus [ty1, ty2]
-
- mk_tup [] = unitTy
- mk_tup tys = foldr1 mk_cross tys
-
- mk_sum [] = unitTy
- mk_sum tys = foldr1 mk_plus tys
-
- return . mk_sum
- . map (mk_tup . map mk_embed)
- $ tys
-
-mkToPRepr :: [[CoreExpr]] -> VM ([CoreExpr], Type)
-mkToPRepr ess
- = do
- embed_tc <- builtin embedTyCon
- embed_dc <- builtin embedDataCon
- cross_tc <- builtin crossTyCon
- cross_dc <- builtin crossDataCon
- plus_tc <- builtin plusTyCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
-
- let mk_embed expr
- = (mkConApp embed_dc [Type ty, expr],
- mkTyConApp embed_tc [ty])
- where ty = exprType expr
-
- mk_cross (expr1, ty1) (expr2, ty2)
- = (mkConApp cross_dc [Type ty1, Type ty2, expr1, expr2],
- mkTyConApp cross_tc [ty1, ty2])
-
- mk_tup [] = (Var unitDataConId, unitTy)
- mk_tup es = foldr1 mk_cross es
-
- mk_sum [] = ([Var unitDataConId], unitTy)
- mk_sum [(expr, ty)] = ([expr], ty)
- mk_sum ((expr, lty) : es)
- = let (alts, rty) = mk_sum es
- in
- (mkConApp left_dc [Type lty, Type rty, expr]
- : [mkConApp right_dc [Type lty, Type rty, alt] | alt <- alts],
- mkTyConApp plus_tc [lty, rty])
-
- return . mk_sum $ map (mk_tup . map mk_embed) ess
-
-mkFromPRepr :: CoreExpr -> Type -> [([Var], CoreExpr)] -> VM CoreExpr
-mkFromPRepr scrut res_ty alts
- = do
- embed_dc <- builtin embedDataCon
- cross_dc <- builtin crossDataCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
- pa_tc <- builtin paTyCon
-
- let un_embed expr ty var res
- = Case expr (mkWildId ty) res_ty
- [(DataAlt embed_dc, [var], res)]
-
- un_cross expr ty var1 var2 res
- = Case expr (mkWildId ty) res_ty
- [(DataAlt cross_dc, [var1, var2], res)]
-
- un_tup expr ty [] res = return res
- un_tup expr ty [var] res = return $ un_embed expr ty var res
- un_tup expr ty (var : vars) res
- = do
- lv <- newLocalVar FSLIT("x") lty
- rv <- newLocalVar FSLIT("y") rty
- liftM (un_cross expr ty lv rv
- . un_embed (Var lv) lty var)
- (un_tup (Var rv) rty vars res)
- where
- (lty, rty) = splitCrossTy ty
-
- un_plus expr ty var1 var2 res1 res2
- = Case expr (mkWildId ty) res_ty
- [(DataAlt left_dc, [var1], res1),
- (DataAlt right_dc, [var2], res2)]
-
- un_sum expr ty [(vars, res)] = un_tup expr ty vars res
- un_sum expr ty ((vars, res) : alts)
- = do
- lv <- newLocalVar FSLIT("l") lty
- rv <- newLocalVar FSLIT("r") rty
- liftM2 (un_plus expr ty lv rv)
- (un_tup (Var lv) lty vars res)
- (un_sum (Var rv) rty alts)
- where
- (lty, rty) = splitPlusTy ty
-
- un_sum scrut (exprType scrut) alts
-
mkClosureType :: Type -> Type -> VM Type
mkClosureType arg_ty res_ty = mkBuiltinTyConApp closureTyCon [arg_ty, res_ty]
mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]
mkPArrayType :: Type -> VM Type
+mkPArrayType ty
+ | Just tycon <- splitPrimTyCon ty
+ = do
+ arr <- traceMaybeV "mkPArrayType" (ppr tycon)
+ $ lookupPrimPArray tycon
+ return $ mkTyConApp arr []
mkPArrayType ty = mkBuiltinTyConApp parrayTyCon [ty]
+mkBuiltinCo :: (Builtins -> TyCon) -> VM Coercion
+mkBuiltinCo get_tc
+ = do
+ tc <- builtin get_tc
+ return $ mkTyConApp tc []
+
parrayReprTyCon :: Type -> VM (TyCon, [Type])
parrayReprTyCon ty = builtin parrayTyCon >>= (`lookupFamInst` [ty])
(tc, arg_tys) <- parrayReprTyCon (exprType ve)
return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys)
-
-prDictOfType :: Type -> VM CoreExpr
-prDictOfType orig_ty
- | Just (tycon, ty_args) <- splitTyConApp_maybe orig_ty
- = do
- dfun <- traceMaybeV "prDictOfType" (ppr tycon) (lookupTyConPR tycon)
- prDFunApply (Var dfun) ty_args
-
-prDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
-prDFunApply dfun tys
- = do
- args <- mapM mkDFunArg arg_tys
- return $ mkApps mono_dfun args
- where
- mono_dfun = mkTyApps dfun tys
- (arg_tys, _) = splitFunTys (exprType mono_dfun)
-
-mkDFunArg :: Type -> VM CoreExpr
-mkDFunArg ty
- | Just (tycon, [arg]) <- splitTyConApp_maybe ty
-
- = let name = tyConName tycon
-
- get_dict | name == paTyConName = paDictOfType
- | name == prTyConName = prDictOfType
- | otherwise = pprPanic "mkDFunArg" (ppr ty)
-
- in get_dict arg
-
-mkDFunArg ty = pprPanic "mkDFunArg" (ppr ty)
+prDFunOfTyCon :: TyCon -> VM CoreExpr
+prDFunOfTyCon tycon
+ = liftM Var (traceMaybeV "prDictOfTyCon" (ppr tycon) (lookupTyConPR tycon))
paDictArgType :: TyVar -> VM (Maybe Type)
paDictArgType tv = go (TyVarTy tv) (tyVarKind tv)
dicts <- mapM paDictOfType tys
return $ mkApps (mkTyApps dfun tys) dicts
-paMethod :: (Builtins -> Var) -> Type -> VM CoreExpr
-paMethod method ty
+type PAMethod = (Builtins -> Var, String)
+
+pa_length = (lengthPAVar, "lengthPA")
+pa_replicate = (replicatePAVar, "replicatePA")
+pa_empty = (emptyPAVar, "emptyPA")
+
+paMethod :: PAMethod -> Type -> VM CoreExpr
+paMethod (method, name) ty
+ | Just tycon <- splitPrimTyCon ty
+ = do
+ fn <- traceMaybeV "paMethod" (ppr tycon <+> text name)
+ $ lookupPrimMethod tycon name
+ return (Var fn)
+
+paMethod (method, name) ty
= do
fn <- builtin method
dict <- paDictOfType ty
return $ mkApps (Var fn) [Type ty, dict]
-lengthPA :: CoreExpr -> VM CoreExpr
-lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty)
- where
- ty = splitPArrayTy (exprType x)
+mkPR :: Type -> VM CoreExpr
+mkPR ty
+ = do
+ fn <- builtin mkPRVar
+ dict <- paDictOfType ty
+ return $ mkApps (Var fn) [Type ty, dict]
+
+lengthPA :: Type -> CoreExpr -> VM CoreExpr
+lengthPA ty x = liftM (`App` x) (paMethod pa_length ty)
replicatePA :: CoreExpr -> CoreExpr -> VM CoreExpr
replicatePA len x = liftM (`mkApps` [len,x])
- (paMethod replicatePAVar (exprType x))
+ (paMethod pa_replicate (exprType x))
emptyPA :: Type -> VM CoreExpr
-emptyPA = paMethod emptyPAVar
+emptyPA = paMethod pa_empty
liftPA :: CoreExpr -> VM CoreExpr
liftPA x
return (Var mkv `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, venv],
Var mkl `mkTyApps` [arg_ty, res_ty, env_ty] `mkApps` [dict, vfn, lfn, lenv])
-mkClosureApp :: VExpr -> VExpr -> VM VExpr
-mkClosureApp (vclo, lclo) (varg, larg)
+mkClosureApp :: Type -> Type -> VExpr -> VExpr -> VM VExpr
+mkClosureApp arg_ty res_ty (vclo, lclo) (varg, larg)
= do
vapply <- builtin applyClosureVar
lapply <- builtin applyClosurePVar
return (Var vapply `mkTyApps` [arg_ty, res_ty] `mkApps` [vclo, varg],
Var lapply `mkTyApps` [arg_ty, res_ty] `mkApps` [lclo, larg])
- where
- (arg_ty, res_ty) = splitClosureTy (exprType vclo)
buildClosures :: [TyVar] -> [VVar] -> [Type] -> Type -> VM VExpr -> VM VExpr
buildClosures tvs vars [] res_ty mk_body
mkLiftEnv lc [ty] [v]
= return (Var v, \env body ->
do
- len <- lengthPA (Var v)
+ len <- lengthPA ty (Var v)
return . Let (NonRec v env)
$ Case len lc (exprType body) [(DEFAULT, [], body)])
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