{-# OPTIONS -fno-warn-missing-signatures #-}
-module VectType ( vectTyCon, vectAndLiftType, vectType, vectTypeEnv,
- -- arrSumArity, pdataCompTys, pdataCompVars,
- buildPADict,
- fromVect )
+module VectType (
+ vectTyCon,
+ vectAndLiftType,
+ vectType,
+ vectTypeEnv,
+ buildPADict,
+ fromVect
+)
where
-
import VectUtils
import Vectorise.Env
import Vectorise.Convert
import Vectorise.Type.Type
import Vectorise.Type.TyConDecl
import Vectorise.Type.Classify
+import Vectorise.Type.Repr
+import Vectorise.Type.PADict
import Vectorise.Utils.Closure
import Vectorise.Utils.Hoisting
import CoreSyn
import CoreUtils
import CoreUnfold
-import MkCore ( mkWildCase )
import BuildTyCl
import DataCon
import TyCon
import Outputable
import FastString
-import MonadUtils ( zipWith3M, foldrM, concatMapM )
-import Control.Monad ( liftM, liftM2, zipWithM, zipWithM_, mapAndUnzipM )
+import MonadUtils
+import Control.Monad
import Data.List
debug = False
where
tyvars = tyConTyVars vect_tc
-data CompRepr = Keep Type
- CoreExpr -- PR dictionary for the type
- | Wrap Type
-
-data ProdRepr = EmptyProd
- | UnaryProd CompRepr
- | Prod { repr_tup_tc :: TyCon -- representation tuple tycon
- , repr_ptup_tc :: TyCon -- PData representation tycon
- , repr_comp_tys :: [Type] -- representation types of
- , repr_comps :: [CompRepr] -- components
- }
-data ConRepr = ConRepr DataCon ProdRepr
-
-data SumRepr = EmptySum
- | UnarySum ConRepr
- | Sum { repr_sum_tc :: TyCon -- representation sum tycon
- , repr_psum_tc :: TyCon -- PData representation tycon
- , repr_sel_ty :: Type -- type of selector
- , repr_con_tys :: [Type] -- representation types of
- , repr_cons :: [ConRepr] -- components
- }
-
-tyConRepr :: TyCon -> VM SumRepr
-tyConRepr tc = sum_repr (tyConDataCons tc)
- where
- sum_repr [] = return EmptySum
- sum_repr [con] = liftM UnarySum (con_repr con)
- sum_repr cons = do
- rs <- mapM con_repr cons
- sum_tc <- builtin (sumTyCon arity)
- tys <- mapM conReprType rs
- (psum_tc, _) <- pdataReprTyCon (mkTyConApp sum_tc tys)
- sel_ty <- builtin (selTy arity)
- return $ Sum { repr_sum_tc = sum_tc
- , repr_psum_tc = psum_tc
- , repr_sel_ty = sel_ty
- , repr_con_tys = tys
- , repr_cons = rs
- }
- where
- arity = length cons
-
- con_repr con = liftM (ConRepr con) (prod_repr (dataConRepArgTys con))
-
- prod_repr [] = return EmptyProd
- prod_repr [ty] = liftM UnaryProd (comp_repr ty)
- prod_repr tys = do
- rs <- mapM comp_repr tys
- tup_tc <- builtin (prodTyCon arity)
- tys' <- mapM compReprType rs
- (ptup_tc, _) <- pdataReprTyCon (mkTyConApp tup_tc tys')
- return $ Prod { repr_tup_tc = tup_tc
- , repr_ptup_tc = ptup_tc
- , repr_comp_tys = tys'
- , repr_comps = rs
- }
- where
- arity = length tys
-
- comp_repr ty = liftM (Keep ty) (prDictOfType ty)
- `orElseV` return (Wrap ty)
-
-sumReprType :: SumRepr -> VM Type
-sumReprType EmptySum = voidType
-sumReprType (UnarySum r) = conReprType r
-sumReprType (Sum { repr_sum_tc = sum_tc, repr_con_tys = tys })
- = return $ mkTyConApp sum_tc tys
-
-conReprType :: ConRepr -> VM Type
-conReprType (ConRepr _ r) = prodReprType r
-
-prodReprType :: ProdRepr -> VM Type
-prodReprType EmptyProd = voidType
-prodReprType (UnaryProd r) = compReprType r
-prodReprType (Prod { repr_tup_tc = tup_tc, repr_comp_tys = tys })
- = return $ mkTyConApp tup_tc tys
-
-compReprType :: CompRepr -> VM Type
-compReprType (Keep ty _) = return ty
-compReprType (Wrap ty) = do
- wrap_tc <- builtin wrapTyCon
- return $ mkTyConApp wrap_tc [ty]
-
-compOrigType :: CompRepr -> Type
-compOrigType (Keep ty _) = ty
-compOrigType (Wrap ty) = ty
-
-buildToPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildToPRepr vect_tc repr_tc _ repr
- = do
- let arg_ty = mkTyConApp vect_tc ty_args
- res_ty <- mkPReprType arg_ty
- arg <- newLocalVar (fsLit "x") arg_ty
- result <- to_sum (Var arg) arg_ty res_ty repr
- return $ Lam arg result
- where
- ty_args = mkTyVarTys (tyConTyVars vect_tc)
-
- wrap_repr_inst = wrapFamInstBody repr_tc ty_args
-
- to_sum _ _ _ EmptySum
- = do
- void <- builtin voidVar
- return $ wrap_repr_inst $ Var void
-
- to_sum arg arg_ty res_ty (UnarySum r)
- = do
- (pat, vars, body) <- con_alt r
- return $ mkWildCase arg arg_ty res_ty
- [(pat, vars, wrap_repr_inst body)]
-
- to_sum arg arg_ty res_ty (Sum { repr_sum_tc = sum_tc
- , repr_con_tys = tys
- , repr_cons = cons })
- = do
- alts <- mapM con_alt cons
- let alts' = [(pat, vars, wrap_repr_inst
- $ mkConApp sum_con (map Type tys ++ [body]))
- | ((pat, vars, body), sum_con)
- <- zip alts (tyConDataCons sum_tc)]
- return $ mkWildCase arg arg_ty res_ty alts'
-
- con_alt (ConRepr con r)
- = do
- (vars, body) <- to_prod r
- return (DataAlt con, vars, body)
-
- to_prod EmptyProd
- = do
- void <- builtin voidVar
- return ([], Var void)
-
- to_prod (UnaryProd comp)
- = do
- var <- newLocalVar (fsLit "x") (compOrigType comp)
- body <- to_comp (Var var) comp
- return ([var], body)
-
- to_prod(Prod { repr_tup_tc = tup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- vars <- newLocalVars (fsLit "x") (map compOrigType comps)
- exprs <- zipWithM to_comp (map Var vars) comps
- return (vars, mkConApp tup_con (map Type tys ++ exprs))
- where
- [tup_con] = tyConDataCons tup_tc
-
- to_comp expr (Keep _ _) = return expr
- to_comp expr (Wrap ty) = do
- wrap_tc <- builtin wrapTyCon
- return $ wrapNewTypeBody wrap_tc [ty] expr
-
-buildFromPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildFromPRepr vect_tc repr_tc _ repr
- = do
- arg_ty <- mkPReprType res_ty
- arg <- newLocalVar (fsLit "x") arg_ty
-
- result <- from_sum (unwrapFamInstScrut repr_tc ty_args (Var arg))
- repr
- return $ Lam arg result
- where
- ty_args = mkTyVarTys (tyConTyVars vect_tc)
- res_ty = mkTyConApp vect_tc ty_args
-
- from_sum _ EmptySum
- = do
- dummy <- builtin fromVoidVar
- return $ Var dummy `App` Type res_ty
-
- from_sum expr (UnarySum r) = from_con expr r
- from_sum expr (Sum { repr_sum_tc = sum_tc
- , repr_con_tys = tys
- , repr_cons = cons })
- = do
- vars <- newLocalVars (fsLit "x") tys
- es <- zipWithM from_con (map Var vars) cons
- return $ mkWildCase expr (exprType expr) res_ty
- [(DataAlt con, [var], e)
- | (con, var, e) <- zip3 (tyConDataCons sum_tc) vars es]
-
- from_con expr (ConRepr con r)
- = from_prod expr (mkConApp con $ map Type ty_args) r
-
- from_prod _ con EmptyProd = return con
- from_prod expr con (UnaryProd r)
- = do
- e <- from_comp expr r
- return $ con `App` e
-
- from_prod expr con (Prod { repr_tup_tc = tup_tc
- , repr_comp_tys = tys
- , repr_comps = comps
- })
- = do
- vars <- newLocalVars (fsLit "y") tys
- es <- zipWithM from_comp (map Var vars) comps
- return $ mkWildCase expr (exprType expr) res_ty
- [(DataAlt tup_con, vars, con `mkApps` es)]
- where
- [tup_con] = tyConDataCons tup_tc
-
- from_comp expr (Keep _ _) = return expr
- from_comp expr (Wrap ty)
- = do
- wrap <- builtin wrapTyCon
- return $ unwrapNewTypeBody wrap [ty] expr
-
-
-buildToArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildToArrPRepr vect_tc prepr_tc pdata_tc r
- = do
- arg_ty <- mkPDataType el_ty
- res_ty <- mkPDataType =<< mkPReprType el_ty
- arg <- newLocalVar (fsLit "xs") arg_ty
-
- pdata_co <- mkBuiltinCo pdataTyCon
- let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion pdata_co
- . mkSymCoercion
- $ mkTyConApp repr_co ty_args
-
- scrut = unwrapFamInstScrut pdata_tc ty_args (Var arg)
-
- (vars, result) <- to_sum r
-
- return . Lam arg
- $ mkWildCase scrut (mkTyConApp pdata_tc ty_args) res_ty
- [(DataAlt pdata_dc, vars, mkCoerce co result)]
- where
- ty_args = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc ty_args
-
- [pdata_dc] = tyConDataCons pdata_tc
-
-
- to_sum EmptySum = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- to_sum (UnarySum r) = to_con r
- to_sum (Sum { repr_psum_tc = psum_tc
- , repr_sel_ty = sel_ty
- , repr_con_tys = tys
- , repr_cons = cons
- })
- = do
- (vars, exprs) <- mapAndUnzipM to_con cons
- sel <- newLocalVar (fsLit "sel") sel_ty
- return (sel : concat vars, mk_result (Var sel) exprs)
- where
- [psum_con] = tyConDataCons psum_tc
- mk_result sel exprs = wrapFamInstBody psum_tc tys
- $ mkConApp psum_con
- $ map Type tys ++ (sel : exprs)
-
- to_con (ConRepr _ r) = to_prod r
-
- to_prod EmptyProd = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- to_prod (UnaryProd r)
- = do
- pty <- mkPDataType (compOrigType r)
- var <- newLocalVar (fsLit "x") pty
- expr <- to_comp (Var var) r
- return ([var], expr)
-
- to_prod (Prod { repr_ptup_tc = ptup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- ptys <- mapM (mkPDataType . compOrigType) comps
- vars <- newLocalVars (fsLit "x") ptys
- es <- zipWithM to_comp (map Var vars) comps
- return (vars, mk_result es)
- where
- [ptup_con] = tyConDataCons ptup_tc
- mk_result exprs = wrapFamInstBody ptup_tc tys
- $ mkConApp ptup_con
- $ map Type tys ++ exprs
-
- to_comp expr (Keep _ _) = return expr
-
- -- FIXME: this is bound to be wrong!
- to_comp expr (Wrap ty)
- = do
- wrap_tc <- builtin wrapTyCon
- (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
- return $ wrapNewTypeBody pwrap_tc [ty] expr
-
-
-buildFromArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildFromArrPRepr vect_tc prepr_tc pdata_tc r
- = do
- arg_ty <- mkPDataType =<< mkPReprType el_ty
- res_ty <- mkPDataType el_ty
- arg <- newLocalVar (fsLit "xs") arg_ty
-
- pdata_co <- mkBuiltinCo pdataTyCon
- let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion pdata_co
- $ mkTyConApp repr_co var_tys
-
- scrut = mkCoerce co (Var arg)
-
- mk_result args = wrapFamInstBody pdata_tc var_tys
- $ mkConApp pdata_con
- $ map Type var_tys ++ args
-
- (expr, _) <- fixV $ \ ~(_, args) ->
- from_sum res_ty (mk_result args) scrut r
-
- return $ Lam arg expr
-
- -- (args, mk) <- from_sum res_ty scrut r
-
- -- let result = wrapFamInstBody pdata_tc var_tys
- -- . mkConApp pdata_dc
- -- $ map Type var_tys ++ args
-
- -- return $ Lam arg (mk result)
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc var_tys
-
- [pdata_con] = tyConDataCons pdata_tc
-
- from_sum _ res _ EmptySum = return (res, [])
- from_sum res_ty res expr (UnarySum r) = from_con res_ty res expr r
- from_sum res_ty res expr (Sum { repr_psum_tc = psum_tc
- , repr_sel_ty = sel_ty
- , repr_con_tys = tys
- , repr_cons = cons })
- = do
- sel <- newLocalVar (fsLit "sel") sel_ty
- ptys <- mapM mkPDataType tys
- vars <- newLocalVars (fsLit "xs") ptys
- (res', args) <- fold from_con res_ty res (map Var vars) cons
- let scrut = unwrapFamInstScrut psum_tc tys expr
- body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt psum_con, sel : vars, res')]
- return (body, Var sel : args)
- where
- [psum_con] = tyConDataCons psum_tc
-
-
- from_con res_ty res expr (ConRepr _ r) = from_prod res_ty res expr r
-
- from_prod _ res _ EmptyProd = return (res, [])
- from_prod res_ty res expr (UnaryProd r)
- = from_comp res_ty res expr r
- from_prod res_ty res expr (Prod { repr_ptup_tc = ptup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- ptys <- mapM mkPDataType tys
- vars <- newLocalVars (fsLit "ys") ptys
- (res', args) <- fold from_comp res_ty res (map Var vars) comps
- let scrut = unwrapFamInstScrut ptup_tc tys expr
- body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt ptup_con, vars, res')]
- return (body, args)
- where
- [ptup_con] = tyConDataCons ptup_tc
-
- from_comp _ res expr (Keep _ _) = return (res, [expr])
- from_comp _ res expr (Wrap ty)
- = do
- wrap_tc <- builtin wrapTyCon
- (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
- return (res, [unwrapNewTypeBody pwrap_tc [ty]
- $ unwrapFamInstScrut pwrap_tc [ty] expr])
-
- fold f res_ty res exprs rs = foldrM f' (res, []) (zip exprs rs)
- where
- f' (expr, r) (res, args) = do
- (res', args') <- f res_ty res expr r
- return (res', args' ++ args)
buildPRDict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
buildPRDict vect_tc prepr_tc _ r
--- /dev/null
+
+module Vectorise.Type.PADict
+ ( buildToPRepr
+ , buildFromPRepr
+ , buildToArrPRepr
+ , buildFromArrPRepr)
+where
+import VectUtils
+import Vectorise.Monad
+import Vectorise.Builtins
+import Vectorise.Type.Repr
+import CoreSyn
+import CoreUtils
+import MkCore ( mkWildCase )
+import TyCon
+import Type
+import Coercion
+import MkId
+
+import FastString
+import MonadUtils
+import Control.Monad
+
+
+buildToPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildToPRepr vect_tc repr_tc _ repr
+ = do
+ let arg_ty = mkTyConApp vect_tc ty_args
+ res_ty <- mkPReprType arg_ty
+ arg <- newLocalVar (fsLit "x") arg_ty
+ result <- to_sum (Var arg) arg_ty res_ty repr
+ return $ Lam arg result
+ where
+ ty_args = mkTyVarTys (tyConTyVars vect_tc)
+
+ wrap_repr_inst = wrapFamInstBody repr_tc ty_args
+
+ to_sum _ _ _ EmptySum
+ = do
+ void <- builtin voidVar
+ return $ wrap_repr_inst $ Var void
+
+ to_sum arg arg_ty res_ty (UnarySum r)
+ = do
+ (pat, vars, body) <- con_alt r
+ return $ mkWildCase arg arg_ty res_ty
+ [(pat, vars, wrap_repr_inst body)]
+
+ to_sum arg arg_ty res_ty (Sum { repr_sum_tc = sum_tc
+ , repr_con_tys = tys
+ , repr_cons = cons })
+ = do
+ alts <- mapM con_alt cons
+ let alts' = [(pat, vars, wrap_repr_inst
+ $ mkConApp sum_con (map Type tys ++ [body]))
+ | ((pat, vars, body), sum_con)
+ <- zip alts (tyConDataCons sum_tc)]
+ return $ mkWildCase arg arg_ty res_ty alts'
+
+ con_alt (ConRepr con r)
+ = do
+ (vars, body) <- to_prod r
+ return (DataAlt con, vars, body)
+
+ to_prod EmptyProd
+ = do
+ void <- builtin voidVar
+ return ([], Var void)
+
+ to_prod (UnaryProd comp)
+ = do
+ var <- newLocalVar (fsLit "x") (compOrigType comp)
+ body <- to_comp (Var var) comp
+ return ([var], body)
+
+ to_prod(Prod { repr_tup_tc = tup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
+ = do
+ vars <- newLocalVars (fsLit "x") (map compOrigType comps)
+ exprs <- zipWithM to_comp (map Var vars) comps
+ return (vars, mkConApp tup_con (map Type tys ++ exprs))
+ where
+ [tup_con] = tyConDataCons tup_tc
+
+ to_comp expr (Keep _ _) = return expr
+ to_comp expr (Wrap ty) = do
+ wrap_tc <- builtin wrapTyCon
+ return $ wrapNewTypeBody wrap_tc [ty] expr
+
+
+buildFromPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildFromPRepr vect_tc repr_tc _ repr
+ = do
+ arg_ty <- mkPReprType res_ty
+ arg <- newLocalVar (fsLit "x") arg_ty
+
+ result <- from_sum (unwrapFamInstScrut repr_tc ty_args (Var arg))
+ repr
+ return $ Lam arg result
+ where
+ ty_args = mkTyVarTys (tyConTyVars vect_tc)
+ res_ty = mkTyConApp vect_tc ty_args
+
+ from_sum _ EmptySum
+ = do
+ dummy <- builtin fromVoidVar
+ return $ Var dummy `App` Type res_ty
+
+ from_sum expr (UnarySum r) = from_con expr r
+ from_sum expr (Sum { repr_sum_tc = sum_tc
+ , repr_con_tys = tys
+ , repr_cons = cons })
+ = do
+ vars <- newLocalVars (fsLit "x") tys
+ es <- zipWithM from_con (map Var vars) cons
+ return $ mkWildCase expr (exprType expr) res_ty
+ [(DataAlt con, [var], e)
+ | (con, var, e) <- zip3 (tyConDataCons sum_tc) vars es]
+
+ from_con expr (ConRepr con r)
+ = from_prod expr (mkConApp con $ map Type ty_args) r
+
+ from_prod _ con EmptyProd = return con
+ from_prod expr con (UnaryProd r)
+ = do
+ e <- from_comp expr r
+ return $ con `App` e
+
+ from_prod expr con (Prod { repr_tup_tc = tup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps
+ })
+ = do
+ vars <- newLocalVars (fsLit "y") tys
+ es <- zipWithM from_comp (map Var vars) comps
+ return $ mkWildCase expr (exprType expr) res_ty
+ [(DataAlt tup_con, vars, con `mkApps` es)]
+ where
+ [tup_con] = tyConDataCons tup_tc
+
+ from_comp expr (Keep _ _) = return expr
+ from_comp expr (Wrap ty)
+ = do
+ wrap <- builtin wrapTyCon
+ return $ unwrapNewTypeBody wrap [ty] expr
+
+
+buildToArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildToArrPRepr vect_tc prepr_tc pdata_tc r
+ = do
+ arg_ty <- mkPDataType el_ty
+ res_ty <- mkPDataType =<< mkPReprType el_ty
+ arg <- newLocalVar (fsLit "xs") arg_ty
+
+ pdata_co <- mkBuiltinCo pdataTyCon
+ let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
+ co = mkAppCoercion pdata_co
+ . mkSymCoercion
+ $ mkTyConApp repr_co ty_args
+
+ scrut = unwrapFamInstScrut pdata_tc ty_args (Var arg)
+
+ (vars, result) <- to_sum r
+
+ return . Lam arg
+ $ mkWildCase scrut (mkTyConApp pdata_tc ty_args) res_ty
+ [(DataAlt pdata_dc, vars, mkCoerce co result)]
+ where
+ ty_args = mkTyVarTys $ tyConTyVars vect_tc
+ el_ty = mkTyConApp vect_tc ty_args
+
+ [pdata_dc] = tyConDataCons pdata_tc
+
+
+ to_sum EmptySum = do
+ pvoid <- builtin pvoidVar
+ return ([], Var pvoid)
+ to_sum (UnarySum r) = to_con r
+ to_sum (Sum { repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = cons
+ })
+ = do
+ (vars, exprs) <- mapAndUnzipM to_con cons
+ sel <- newLocalVar (fsLit "sel") sel_ty
+ return (sel : concat vars, mk_result (Var sel) exprs)
+ where
+ [psum_con] = tyConDataCons psum_tc
+ mk_result sel exprs = wrapFamInstBody psum_tc tys
+ $ mkConApp psum_con
+ $ map Type tys ++ (sel : exprs)
+
+ to_con (ConRepr _ r) = to_prod r
+
+ to_prod EmptyProd = do
+ pvoid <- builtin pvoidVar
+ return ([], Var pvoid)
+ to_prod (UnaryProd r)
+ = do
+ pty <- mkPDataType (compOrigType r)
+ var <- newLocalVar (fsLit "x") pty
+ expr <- to_comp (Var var) r
+ return ([var], expr)
+
+ to_prod (Prod { repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
+ = do
+ ptys <- mapM (mkPDataType . compOrigType) comps
+ vars <- newLocalVars (fsLit "x") ptys
+ es <- zipWithM to_comp (map Var vars) comps
+ return (vars, mk_result es)
+ where
+ [ptup_con] = tyConDataCons ptup_tc
+ mk_result exprs = wrapFamInstBody ptup_tc tys
+ $ mkConApp ptup_con
+ $ map Type tys ++ exprs
+
+ to_comp expr (Keep _ _) = return expr
+
+ -- FIXME: this is bound to be wrong!
+ to_comp expr (Wrap ty)
+ = do
+ wrap_tc <- builtin wrapTyCon
+ (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
+ return $ wrapNewTypeBody pwrap_tc [ty] expr
+
+
+buildFromArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
+buildFromArrPRepr vect_tc prepr_tc pdata_tc r
+ = do
+ arg_ty <- mkPDataType =<< mkPReprType el_ty
+ res_ty <- mkPDataType el_ty
+ arg <- newLocalVar (fsLit "xs") arg_ty
+
+ pdata_co <- mkBuiltinCo pdataTyCon
+ let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
+ co = mkAppCoercion pdata_co
+ $ mkTyConApp repr_co var_tys
+
+ scrut = mkCoerce co (Var arg)
+
+ mk_result args = wrapFamInstBody pdata_tc var_tys
+ $ mkConApp pdata_con
+ $ map Type var_tys ++ args
+
+ (expr, _) <- fixV $ \ ~(_, args) ->
+ from_sum res_ty (mk_result args) scrut r
+
+ return $ Lam arg expr
+
+ -- (args, mk) <- from_sum res_ty scrut r
+
+ -- let result = wrapFamInstBody pdata_tc var_tys
+ -- . mkConApp pdata_dc
+ -- $ map Type var_tys ++ args
+
+ -- return $ Lam arg (mk result)
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ el_ty = mkTyConApp vect_tc var_tys
+
+ [pdata_con] = tyConDataCons pdata_tc
+
+ from_sum _ res _ EmptySum = return (res, [])
+ from_sum res_ty res expr (UnarySum r) = from_con res_ty res expr r
+ from_sum res_ty res expr (Sum { repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = cons })
+ = do
+ sel <- newLocalVar (fsLit "sel") sel_ty
+ ptys <- mapM mkPDataType tys
+ vars <- newLocalVars (fsLit "xs") ptys
+ (res', args) <- fold from_con res_ty res (map Var vars) cons
+ let scrut = unwrapFamInstScrut psum_tc tys expr
+ body = mkWildCase scrut (exprType scrut) res_ty
+ [(DataAlt psum_con, sel : vars, res')]
+ return (body, Var sel : args)
+ where
+ [psum_con] = tyConDataCons psum_tc
+
+
+ from_con res_ty res expr (ConRepr _ r) = from_prod res_ty res expr r
+
+ from_prod _ res _ EmptyProd = return (res, [])
+ from_prod res_ty res expr (UnaryProd r)
+ = from_comp res_ty res expr r
+ from_prod res_ty res expr (Prod { repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys
+ , repr_comps = comps })
+ = do
+ ptys <- mapM mkPDataType tys
+ vars <- newLocalVars (fsLit "ys") ptys
+ (res', args) <- fold from_comp res_ty res (map Var vars) comps
+ let scrut = unwrapFamInstScrut ptup_tc tys expr
+ body = mkWildCase scrut (exprType scrut) res_ty
+ [(DataAlt ptup_con, vars, res')]
+ return (body, args)
+ where
+ [ptup_con] = tyConDataCons ptup_tc
+
+ from_comp _ res expr (Keep _ _) = return (res, [expr])
+ from_comp _ res expr (Wrap ty)
+ = do
+ wrap_tc <- builtin wrapTyCon
+ (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
+ return (res, [unwrapNewTypeBody pwrap_tc [ty]
+ $ unwrapFamInstScrut pwrap_tc [ty] expr])
+
+ fold f res_ty res exprs rs = foldrM f' (res, []) (zip exprs rs)
+ where
+ f' (expr, r) (res, args) = do
+ (res', args') <- f res_ty res expr r
+ return (res', args' ++ args)
--- /dev/null
+
+-- | Representation of Algebraic Data Types.
+module Vectorise.Type.Repr
+ ( CompRepr (..)
+ , ProdRepr (..)
+ , ConRepr (..)
+ , SumRepr (..)
+ , tyConRepr
+ , sumReprType
+ , conReprType
+ , prodReprType
+ , compReprType
+ , compOrigType)
+where
+import VectUtils
+import Vectorise.Monad
+import Vectorise.Builtins
+
+import CoreSyn
+import DataCon
+import TyCon
+import Type
+import Control.Monad
+
+
+data CompRepr = Keep Type
+ CoreExpr -- PR dictionary for the type
+ | Wrap Type
+
+data ProdRepr = EmptyProd
+ | UnaryProd CompRepr
+ | Prod { repr_tup_tc :: TyCon -- representation tuple tycon
+ , repr_ptup_tc :: TyCon -- PData representation tycon
+ , repr_comp_tys :: [Type] -- representation types of
+ , repr_comps :: [CompRepr] -- components
+ }
+data ConRepr = ConRepr DataCon ProdRepr
+
+data SumRepr = EmptySum
+ | UnarySum ConRepr
+ | Sum { repr_sum_tc :: TyCon -- representation sum tycon
+ , repr_psum_tc :: TyCon -- PData representation tycon
+ , repr_sel_ty :: Type -- type of selector
+ , repr_con_tys :: [Type] -- representation types of
+ , repr_cons :: [ConRepr] -- components
+ }
+
+tyConRepr :: TyCon -> VM SumRepr
+tyConRepr tc = sum_repr (tyConDataCons tc)
+ where
+ sum_repr [] = return EmptySum
+ sum_repr [con] = liftM UnarySum (con_repr con)
+ sum_repr cons = do
+ rs <- mapM con_repr cons
+ sum_tc <- builtin (sumTyCon arity)
+ tys <- mapM conReprType rs
+ (psum_tc, _) <- pdataReprTyCon (mkTyConApp sum_tc tys)
+ sel_ty <- builtin (selTy arity)
+ return $ Sum { repr_sum_tc = sum_tc
+ , repr_psum_tc = psum_tc
+ , repr_sel_ty = sel_ty
+ , repr_con_tys = tys
+ , repr_cons = rs
+ }
+ where
+ arity = length cons
+
+ con_repr con = liftM (ConRepr con) (prod_repr (dataConRepArgTys con))
+
+ prod_repr [] = return EmptyProd
+ prod_repr [ty] = liftM UnaryProd (comp_repr ty)
+ prod_repr tys = do
+ rs <- mapM comp_repr tys
+ tup_tc <- builtin (prodTyCon arity)
+ tys' <- mapM compReprType rs
+ (ptup_tc, _) <- pdataReprTyCon (mkTyConApp tup_tc tys')
+ return $ Prod { repr_tup_tc = tup_tc
+ , repr_ptup_tc = ptup_tc
+ , repr_comp_tys = tys'
+ , repr_comps = rs
+ }
+ where
+ arity = length tys
+
+ comp_repr ty = liftM (Keep ty) (prDictOfType ty)
+ `orElseV` return (Wrap ty)
+
+sumReprType :: SumRepr -> VM Type
+sumReprType EmptySum = voidType
+sumReprType (UnarySum r) = conReprType r
+sumReprType (Sum { repr_sum_tc = sum_tc, repr_con_tys = tys })
+ = return $ mkTyConApp sum_tc tys
+
+conReprType :: ConRepr -> VM Type
+conReprType (ConRepr _ r) = prodReprType r
+
+prodReprType :: ProdRepr -> VM Type
+prodReprType EmptyProd = voidType
+prodReprType (UnaryProd r) = compReprType r
+prodReprType (Prod { repr_tup_tc = tup_tc, repr_comp_tys = tys })
+ = return $ mkTyConApp tup_tc tys
+
+compReprType :: CompRepr -> VM Type
+compReprType (Keep ty _) = return ty
+compReprType (Wrap ty) = do
+ wrap_tc <- builtin wrapTyCon
+ return $ mkTyConApp wrap_tc [ty]
+
+compOrigType :: CompRepr -> Type
+compOrigType (Keep ty _) = ty
+compOrigType (Wrap ty) = ty
projects / ghc-hetmet.git / commitdiff