+
module Vectorise( vectorise )
where
-#include "HsVersions.h"
-
import VectMonad
import VectUtils
import VectType
import VectCore
-import DynFlags
-import HscTypes
+import HscTypes hiding ( MonadThings(..) )
-import CoreLint ( showPass, endPass )
+import Module ( PackageId )
import CoreSyn
import CoreUtils
+import CoreUnfold ( mkInlineRule )
+import MkCore ( mkWildCase )
import CoreFVs
-import SimplMonad ( SimplCount, zeroSimplCount )
-import Rules ( RuleBase )
+import CoreMonad ( CoreM, getHscEnv )
import DataCon
import TyCon
import Type
import FamInstEnv ( extendFamInstEnvList )
-import InstEnv ( extendInstEnvList )
import Var
import VarEnv
import VarSet
-import Name ( mkSysTvName, getName )
-import NameEnv
import Id
-import MkId ( unwrapFamInstScrut )
import OccName
+import BasicTypes ( isLoopBreaker )
-import DsMonad hiding (mapAndUnzipM)
-import DsUtils ( mkCoreTup, mkCoreTupTy )
-
-import PrelNames
+import Literal ( Literal, mkMachInt )
import TysWiredIn
import TysPrim ( intPrimTy )
-import BasicTypes ( Boxity(..) )
import Outputable
import FastString
-import Control.Monad ( liftM, liftM2, mapAndUnzipM )
+import Util ( zipLazy )
+import Control.Monad
+import Data.List ( sortBy, unzip4 )
+
+vectorise :: PackageId -> ModGuts -> CoreM ModGuts
+vectorise backend guts = do
+ hsc_env <- getHscEnv
+ liftIO $ vectoriseIO backend hsc_env guts
-vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
- -> IO (SimplCount, ModGuts)
-vectorise hsc_env _ _ guts
+vectoriseIO :: PackageId -> HscEnv -> ModGuts -> IO ModGuts
+vectoriseIO backend hsc_env guts
= do
- showPass dflags "Vectorisation"
eps <- hscEPS hsc_env
let info = hptVectInfo hsc_env `plusVectInfo` eps_vect_info eps
- Just (info', guts') <- initV hsc_env guts info (vectModule guts)
- endPass dflags "Vectorisation" Opt_D_dump_vect (mg_binds guts')
- return (zeroSimplCount dflags, guts' { mg_vect_info = info' })
- where
- dflags = hsc_dflags hsc_env
+ Just (info', guts') <- initV backend hsc_env guts info (vectModule guts)
+ return (guts' { mg_vect_info = info' })
vectModule :: ModGuts -> VM ModGuts
vectModule guts
= do
- (types', fam_insts, pa_insts) <- vectTypeEnv (mg_types guts)
-
- let insts = map painstInstance pa_insts
- fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
- inst_env' = extendInstEnvList (mg_inst_env guts) insts
- updGEnv (setInstEnvs inst_env' fam_inst_env')
-
- dicts <- mapM buildPADict pa_insts
- binds' <- mapM vectTopBind (mg_binds guts)
+ (types', fam_insts, tc_binds) <- vectTypeEnv (mg_types guts)
+
+ let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
+ updGEnv (setFamInstEnv fam_inst_env')
+
+ -- dicts <- mapM buildPADict pa_insts
+ -- workers <- mapM vectDataConWorkers pa_insts
+ binds' <- mapM vectTopBind (mg_binds guts)
return $ guts { mg_types = types'
- , mg_binds = Rec (concat dicts) : binds'
- , mg_inst_env = inst_env'
+ , mg_binds = Rec tc_binds : binds'
, mg_fam_inst_env = fam_inst_env'
- , mg_insts = mg_insts guts ++ insts
, mg_fam_insts = mg_fam_insts guts ++ fam_insts
}
vectTopBind :: CoreBind -> VM CoreBind
vectTopBind b@(NonRec var expr)
= do
- var' <- vectTopBinder var
- expr' <- vectTopRhs expr
+ (inline, expr') <- vectTopRhs var expr
+ var' <- vectTopBinder var inline expr'
hs <- takeHoisted
- return . Rec $ (var, expr) : (var', expr') : hs
+ cexpr <- tryConvert var var' expr
+ return . Rec $ (var, cexpr) : (var', expr') : hs
`orElseV`
return b
vectTopBind b@(Rec bs)
= do
- vars' <- mapM vectTopBinder vars
- exprs' <- mapM vectTopRhs exprs
+ (vars', _, exprs') <- fixV $ \ ~(_, inlines, rhss) ->
+ do
+ vars' <- sequence [vectTopBinder var inline rhs
+ | (var, ~(inline, rhs))
+ <- zipLazy vars (zip inlines rhss)]
+ (inlines', exprs') <- mapAndUnzipM (uncurry vectTopRhs) bs
+ return (vars', inlines', exprs')
hs <- takeHoisted
- return . Rec $ bs ++ zip vars' exprs' ++ hs
+ cexprs <- sequence $ zipWith3 tryConvert vars vars' exprs
+ return . Rec $ zip vars cexprs ++ zip vars' exprs' ++ hs
`orElseV`
return b
where
(vars, exprs) = unzip bs
-vectTopBinder :: Var -> VM Var
-vectTopBinder var
+-- NOTE: vectTopBinder *MUST* be lazy in inline and expr because of how it is
+-- used inside of fixV in vectTopBind
+vectTopBinder :: Var -> Inline -> CoreExpr -> VM Var
+vectTopBinder var inline expr
= do
- vty <- vectType (idType var)
- name <- cloneName mkVectOcc (getName var)
- let var' | isExportedId var = Id.mkExportedLocalId name vty
- | otherwise = Id.mkLocalId name vty
+ vty <- vectType (idType var)
+ var' <- liftM (`setIdUnfolding` unfolding) $ cloneId mkVectOcc var vty
defGlobalVar var var'
return var'
-
-vectTopRhs :: CoreExpr -> VM CoreExpr
-vectTopRhs = liftM fst . closedV . vectPolyExpr (panic "Empty lifting context") . freeVars
+ where
+ unfolding = case inline of
+ Inline arity -> mkInlineRule expr (Just arity)
+ DontInline -> noUnfolding
+
+vectTopRhs :: Var -> CoreExpr -> VM (Inline, CoreExpr)
+vectTopRhs var expr
+ = closedV
+ $ do
+ (inline, vexpr) <- inBind var
+ $ vectPolyExpr (isLoopBreaker $ idOccInfo var)
+ (freeVars expr)
+ return (inline, vectorised vexpr)
+
+tryConvert :: Var -> Var -> CoreExpr -> VM CoreExpr
+tryConvert var vect_var rhs
+ = fromVect (idType var) (Var vect_var) `orElseV` return rhs
-- ----------------------------------------------------------------------------
-- Bindings
vectBndr :: Var -> VM VVar
vectBndr v
= do
- vty <- vectType (idType v)
- lty <- mkPArrayType vty
+ (vty, lty) <- vectAndLiftType (idType v)
let vv = v `Id.setIdType` vty
lv = v `Id.setIdType` lty
updLEnv (mapTo vv lv)
where
mapTo vv lv env = env { local_vars = extendVarEnv (local_vars env) v (vv, lv) }
+vectBndrNew :: Var -> FastString -> VM VVar
+vectBndrNew v fs
+ = do
+ vty <- vectType (idType v)
+ vv <- newLocalVVar fs vty
+ updLEnv (upd vv)
+ return vv
+ where
+ upd vv env = env { local_vars = extendVarEnv (local_vars env) v vv }
+
vectBndrIn :: Var -> VM a -> VM (VVar, a)
vectBndrIn v p
= localV
x <- p
return (vv, x)
+vectBndrNewIn :: Var -> FastString -> VM a -> VM (VVar, a)
+vectBndrNewIn v fs p
+ = localV
+ $ do
+ vv <- vectBndrNew v fs
+ x <- p
+ return (vv, x)
+
vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
vectBndrsIn vs p
= localV
-- ----------------------------------------------------------------------------
-- Expressions
-capply :: VExpr -> VExpr -> VM VExpr
-capply (vfn, lfn) (varg, larg)
- = do
- apply <- builtin applyClosureVar
- applyP <- builtin applyClosurePVar
- return (mkApps (Var apply) [Type arg_ty, Type res_ty, vfn, varg],
- mkApps (Var applyP) [Type arg_ty, Type res_ty, lfn, larg])
- where
- fn_ty = exprType vfn
- (arg_ty, res_ty) = splitClosureTy fn_ty
-
-vectVar :: Var -> Var -> VM VExpr
-vectVar lc v
+vectVar :: Var -> VM VExpr
+vectVar v
= do
r <- lookupVar v
case r of
Local (vv,lv) -> return (Var vv, Var lv)
Global vv -> do
let vexpr = Var vv
- lexpr <- replicatePA vexpr (Var lc)
+ lexpr <- liftPD vexpr
return (vexpr, lexpr)
-vectPolyVar :: Var -> Var -> [Type] -> VM VExpr
-vectPolyVar lc v tys
+vectPolyVar :: Var -> [Type] -> VM VExpr
+vectPolyVar v tys
= do
vtys <- mapM vectType tys
r <- lookupVar v
(polyApply (Var lv) vtys)
Global poly -> do
vexpr <- polyApply (Var poly) vtys
- lexpr <- replicatePA vexpr (Var lc)
+ lexpr <- liftPD vexpr
return (vexpr, lexpr)
-vectPolyExpr :: Var -> CoreExprWithFVs -> VM VExpr
-vectPolyExpr lc expr
- = polyAbstract tvs $ \abstract ->
- -- FIXME: shadowing (tvs in lc)
- do
- mono' <- vectExpr lc mono
- return $ mapVect abstract mono'
- where
- (tvs, mono) = collectAnnTypeBinders expr
-
-vectExpr :: Var -> CoreExprWithFVs -> VM VExpr
-vectExpr lc (_, AnnType ty)
+vectLiteral :: Literal -> VM VExpr
+vectLiteral lit
= do
- vty <- vectType ty
- return (Type vty, Type vty)
-
-vectExpr lc (_, AnnVar v) = vectVar lc v
+ lexpr <- liftPD (Lit lit)
+ return (Lit lit, lexpr)
-vectExpr lc (_, AnnLit lit)
+vectPolyExpr :: Bool -> CoreExprWithFVs -> VM (Inline, VExpr)
+vectPolyExpr loop_breaker (_, AnnNote note expr)
= do
- let vexpr = Lit lit
- lexpr <- replicatePA vexpr (Var lc)
- return (vexpr, lexpr)
-
-vectExpr lc (_, AnnNote note expr)
+ (inline, expr') <- vectPolyExpr loop_breaker expr
+ return (inline, vNote note expr')
+vectPolyExpr loop_breaker expr
= do
- (vexpr, lexpr) <- vectExpr lc expr
- return (Note note vexpr, Note note lexpr)
+ arity <- polyArity tvs
+ polyAbstract tvs $ \args ->
+ do
+ (inline, mono') <- vectFnExpr False loop_breaker mono
+ return (addInlineArity inline arity,
+ mapVect (mkLams $ tvs ++ args) mono')
+ where
+ (tvs, mono) = collectAnnTypeBinders expr
-vectExpr lc e@(_, AnnApp _ arg)
+vectExpr :: CoreExprWithFVs -> VM VExpr
+vectExpr (_, AnnType ty)
+ = liftM vType (vectType ty)
+
+vectExpr (_, AnnVar v) = vectVar v
+
+vectExpr (_, AnnLit lit) = vectLiteral lit
+
+vectExpr (_, AnnNote note expr)
+ = liftM (vNote note) (vectExpr expr)
+
+vectExpr e@(_, AnnApp _ arg)
| isAnnTypeArg arg
- = vectTyAppExpr lc fn tys
+ = vectTyAppExpr fn tys
where
(fn, tys) = collectAnnTypeArgs e
-vectExpr lc (_, AnnApp fn arg)
+vectExpr (_, AnnApp (_, AnnVar v) (_, AnnLit lit))
+ | Just con <- isDataConId_maybe v
+ , is_special_con con
= do
- fn' <- vectExpr lc fn
- arg' <- vectExpr lc arg
- capply fn' arg'
+ let vexpr = App (Var v) (Lit lit)
+ lexpr <- liftPD vexpr
+ return (vexpr, lexpr)
+ where
+ is_special_con con = con `elem` [intDataCon, floatDataCon, doubleDataCon]
-vectExpr lc (_, AnnCase expr bndr ty alts)
- = panic "vectExpr: case"
-vectExpr lc (_, AnnLet (AnnNonRec bndr rhs) body)
+vectExpr (_, AnnApp fn arg)
= do
- (vrhs, lrhs) <- vectPolyExpr lc rhs
- ((vbndr, lbndr), (vbody, lbody)) <- vectBndrIn bndr (vectExpr lc body)
- return (Let (NonRec vbndr vrhs) vbody,
- Let (NonRec lbndr lrhs) lbody)
+ arg_ty' <- vectType arg_ty
+ res_ty' <- vectType res_ty
+ fn' <- vectExpr fn
+ arg' <- vectExpr arg
+ mkClosureApp arg_ty' res_ty' fn' arg'
+ where
+ (arg_ty, res_ty) = splitFunTy . exprType $ deAnnotate fn
-vectExpr lc (_, AnnLet (AnnRec prs) body)
- = do
- (bndrs, (vrhss, vbody, lrhss, lbody)) <- vectBndrsIn bndrs vect
- let (vbndrs, lbndrs) = unzip bndrs
- return (Let (Rec (zip vbndrs vrhss)) vbody,
- Let (Rec (zip lbndrs lrhss)) lbody)
+vectExpr (_, AnnCase scrut bndr ty alts)
+ | Just (tycon, ty_args) <- splitTyConApp_maybe scrut_ty
+ , isAlgTyCon tycon
+ = vectAlgCase tycon ty_args scrut bndr ty alts
where
- (bndrs, rhss) = unzip prs
-
- vect = do
- (vrhss, lrhss) <- mapAndUnzipM (vectExpr lc) rhss
- (vbody, lbody) <- vectPolyExpr lc body
- return (vrhss, vbody, lrhss, lbody)
+ scrut_ty = exprType (deAnnotate scrut)
-vectExpr lc e@(_, AnnLam bndr body)
- | isTyVar bndr = pprPanic "vectExpr" (ppr $ deAnnotate e)
+vectExpr (_, AnnLet (AnnNonRec bndr rhs) body)
+ = do
+ vrhs <- localV . inBind bndr . liftM snd $ vectPolyExpr False rhs
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vLet (vNonRec vbndr vrhs) vbody
-vectExpr lc (fvs, AnnLam bndr body)
+vectExpr (_, AnnLet (AnnRec bs) body)
= do
- tyvars <- localTyVars
- info <- mkCEnvInfo fvs bndr body
- (poly_vfn, poly_lfn) <- mkClosureFns info tyvars bndr body
+ (vbndrs, (vrhss, vbody)) <- vectBndrsIn bndrs
+ $ liftM2 (,)
+ (zipWithM vect_rhs bndrs rhss)
+ (vectExpr body)
+ return $ vLet (vRec vbndrs vrhss) vbody
+ where
+ (bndrs, rhss) = unzip bs
+
+ vect_rhs bndr rhs = localV
+ . inBind bndr
+ . liftM snd
+ $ vectPolyExpr (isLoopBreaker $ idOccInfo bndr) rhs
+
+vectExpr e@(_, AnnLam bndr _)
+ | isId bndr = liftM snd $ vectFnExpr True False e
+{-
+onlyIfV (isEmptyVarSet fvs) (vectScalarLam bs $ deAnnotate body)
+ `orElseV` vectLam True fvs bs body
+ where
+ (bs,body) = collectAnnValBinders e
+-}
- vfn_var <- hoistExpr FSLIT("vfn") poly_vfn
- lfn_var <- hoistExpr FSLIT("lfn") poly_lfn
+vectExpr e = cantVectorise "Can't vectorise expression" (ppr $ deAnnotate e)
- let (venv, lenv) = mkClosureEnvs info (Var lc)
+vectFnExpr :: Bool -> Bool -> CoreExprWithFVs -> VM (Inline, VExpr)
+vectFnExpr inline loop_breaker e@(fvs, AnnLam bndr _)
+ | isId bndr = onlyIfV (isEmptyVarSet fvs)
+ (mark DontInline . vectScalarLam bs $ deAnnotate body)
+ `orElseV` mark inlineMe (vectLam inline loop_breaker fvs bs body)
+ where
+ (bs,body) = collectAnnValBinders e
+vectFnExpr _ _ e = mark DontInline $ vectExpr e
- let env_ty = cenv_vty info
+mark :: Inline -> VM a -> VM (Inline, a)
+mark b p = do { x <- p; return (b,x) }
- pa_dict <- paDictOfType env_ty
+vectScalarLam :: [Var] -> CoreExpr -> VM VExpr
+vectScalarLam args body
+ = do
+ scalars <- globalScalars
+ onlyIfV (all is_scalar_ty arg_tys
+ && is_scalar_ty res_ty
+ && is_scalar (extendVarSetList scalars args) body)
+ $ do
+ fn_var <- hoistExpr (fsLit "fn") (mkLams args body) DontInline
+ zipf <- zipScalars arg_tys res_ty
+ clo <- scalarClosure arg_tys res_ty (Var fn_var)
+ (zipf `App` Var fn_var)
+ clo_var <- hoistExpr (fsLit "clo") clo DontInline
+ lclo <- liftPD (Var clo_var)
+ return (Var clo_var, lclo)
+ where
+ arg_tys = map idType args
+ res_ty = exprType body
- arg_ty <- vectType (varType bndr)
- res_ty <- vectType (exprType $ deAnnotate body)
+ is_scalar_ty ty | Just (tycon, []) <- splitTyConApp_maybe ty
+ = tycon == intTyCon
+ || tycon == floatTyCon
+ || tycon == doubleTyCon
- -- FIXME: move the functions to the top level
- mono_vfn <- polyApply (Var vfn_var) (mkTyVarTys tyvars)
- mono_lfn <- polyApply (Var lfn_var) (mkTyVarTys tyvars)
+ | otherwise = False
- mk_clo <- builtin mkClosureVar
- mk_cloP <- builtin mkClosurePVar
+ is_scalar vs (Var v) = v `elemVarSet` vs
+ is_scalar _ e@(Lit _) = is_scalar_ty $ exprType e
+ is_scalar vs (App e1 e2) = is_scalar vs e1 && is_scalar vs e2
+ is_scalar _ _ = False
- let vclo = Var mk_clo `mkTyApps` [arg_ty, res_ty, env_ty]
- `mkApps` [pa_dict, mono_vfn, mono_lfn, venv]
-
- lclo = Var mk_cloP `mkTyApps` [arg_ty, res_ty, env_ty]
- `mkApps` [pa_dict, mono_vfn, mono_lfn, lenv]
+vectLam :: Bool -> Bool -> VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
+vectLam inline loop_breaker fvs bs body
+ = do
+ tyvars <- localTyVars
+ (vs, vvs) <- readLEnv $ \env ->
+ unzip [(var, vv) | var <- varSetElems fvs
+ , Just vv <- [lookupVarEnv (local_vars env) var]]
+
+ arg_tys <- mapM (vectType . idType) bs
+ res_ty <- vectType (exprType $ deAnnotate body)
+
+ buildClosures tyvars vvs arg_tys res_ty
+ . hoistPolyVExpr tyvars (maybe_inline (length vs + length bs))
+ $ do
+ lc <- builtin liftingContext
+ (vbndrs, vbody) <- vectBndrsIn (vs ++ bs)
+ (vectExpr body)
+ vbody' <- break_loop lc res_ty vbody
+ return $ vLams lc vbndrs vbody'
+ where
+ maybe_inline n | inline = Inline n
+ | otherwise = DontInline
- return (vclo, lclo)
+ break_loop lc ty (ve, le)
+ | loop_breaker
+ = do
+ empty <- emptyPD ty
+ lty <- mkPDataType ty
+ return (ve, mkWildCase (Var lc) intPrimTy lty
+ [(DEFAULT, [], le),
+ (LitAlt (mkMachInt 0), [], empty)])
+
+ | otherwise = return (ve, le)
+
+
+vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr
+vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
+vectTyAppExpr e tys = cantVectorise "Can't vectorise expression"
+ (ppr $ deAnnotate e `mkTyApps` tys)
+
+-- We convert
+--
+-- case e :: t of v { ... }
+--
+-- to
+--
+-- V: let v' = e in case v' of _ { ... }
+-- L: let v' = e in case v' `cast` ... of _ { ... }
+--
+-- When lifting, we have to do it this way because v must have the type
+-- [:V(T):] but the scrutinee must be cast to the representation type. We also
+-- have to handle the case where v is a wild var correctly.
+--
+
+-- FIXME: this is too lazy
+vectAlgCase :: TyCon -> [Type] -> CoreExprWithFVs -> Var -> Type
+ -> [(AltCon, [Var], CoreExprWithFVs)]
+ -> VM VExpr
+vectAlgCase _tycon _ty_args scrut bndr ty [(DEFAULT, [], body)]
+ = do
+ vscrut <- vectExpr scrut
+ (vty, lty) <- vectAndLiftType ty
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vCaseDEFAULT vscrut vbndr vty lty vbody
-data CEnvInfo = CEnvInfo {
- cenv_vars :: [Var]
- , cenv_values :: [(CoreExpr, CoreExpr)]
- , cenv_vty :: Type
- , cenv_lty :: Type
- , cenv_repr_tycon :: TyCon
- , cenv_repr_tyargs :: [Type]
- , cenv_repr_datacon :: DataCon
- }
+vectAlgCase _tycon _ty_args scrut bndr ty [(DataAlt _, [], body)]
+ = do
+ vscrut <- vectExpr scrut
+ (vty, lty) <- vectAndLiftType ty
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vCaseDEFAULT vscrut vbndr vty lty vbody
-mkCEnvInfo :: VarSet -> Var -> CoreExprWithFVs -> VM CEnvInfo
-mkCEnvInfo fvs arg body
+vectAlgCase _tycon _ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
= do
- locals <- readLEnv local_vars
- let
- (vars, vals) = unzip
- [(var, (Var v, Var v')) | var <- varSetElems fvs
- , Just (v,v') <- [lookupVarEnv locals var]]
- vtys <- mapM (vectType . varType) vars
-
- (vty, repr_tycon, repr_tyargs, repr_datacon) <- mk_env_ty vtys
- lty <- mkPArrayType vty
-
- return $ CEnvInfo {
- cenv_vars = vars
- , cenv_values = vals
- , cenv_vty = vty
- , cenv_lty = lty
- , cenv_repr_tycon = repr_tycon
- , cenv_repr_tyargs = repr_tyargs
- , cenv_repr_datacon = repr_datacon
- }
+ (vty, lty) <- vectAndLiftType ty
+ vexpr <- vectExpr scrut
+ (vbndr, (vbndrs, (vect_body, lift_body)))
+ <- vect_scrut_bndr
+ . vectBndrsIn bndrs
+ $ vectExpr body
+ let (vect_bndrs, lift_bndrs) = unzip vbndrs
+ (vscrut, lscrut, pdata_tc, _arg_tys) <- mkVScrut (vVar vbndr)
+ vect_dc <- maybeV (lookupDataCon dc)
+ let [pdata_dc] = tyConDataCons pdata_tc
+
+ let vcase = mk_wild_case vscrut vty vect_dc vect_bndrs vect_body
+ lcase = mk_wild_case lscrut lty pdata_dc lift_bndrs lift_body
+
+ return $ vLet (vNonRec vbndr vexpr) (vcase, lcase)
where
- mk_env_ty [vty]
- = return (vty, error "absent cinfo_repr_tycon"
- , error "absent cinfo_repr_tyargs"
- , error "absent cinfo_repr_datacon")
+ vect_scrut_bndr | isDeadBinder bndr = vectBndrNewIn bndr (fsLit "scrut")
+ | otherwise = vectBndrIn bndr
- mk_env_ty vtys
- = do
- let ty = mkCoreTupTy vtys
- (repr_tc, repr_tyargs) <- lookupPArrayFamInst ty
- let [repr_con] = tyConDataCons repr_tc
- return (ty, repr_tc, repr_tyargs, repr_con)
+ mk_wild_case expr ty dc bndrs body
+ = mkWildCase expr (exprType expr) ty [(DataAlt dc, bndrs, body)]
-
+vectAlgCase tycon _ty_args scrut bndr ty alts
+ = do
+ vect_tc <- maybeV (lookupTyCon tycon)
+ (vty, lty) <- vectAndLiftType ty
-mkClosureEnvs :: CEnvInfo -> CoreExpr -> (CoreExpr, CoreExpr)
-mkClosureEnvs info lc
- | [] <- vals
- = (Var unitDataConId, mkApps (Var $ dataConWrapId (cenv_repr_datacon info))
- [lc, Var unitDataConId])
+ let arity = length (tyConDataCons vect_tc)
+ sel_ty <- builtin (selTy arity)
+ sel_bndr <- newLocalVar (fsLit "sel") sel_ty
+ let sel = Var sel_bndr
- | [(vval, lval)] <- vals
- = (vval, lval)
+ (vbndr, valts) <- vect_scrut_bndr
+ $ mapM (proc_alt arity sel vty lty) alts'
+ let (vect_dcs, vect_bndrss, lift_bndrss, vbodies) = unzip4 valts
- | otherwise
- = (mkCoreTup vvals, Var (dataConWrapId $ cenv_repr_datacon info)
- `mkTyApps` cenv_repr_tyargs info
- `mkApps` (lc : lvals))
+ vexpr <- vectExpr scrut
+ (vect_scrut, lift_scrut, pdata_tc, _arg_tys) <- mkVScrut (vVar vbndr)
+ let [pdata_dc] = tyConDataCons pdata_tc
- where
- vals = cenv_values info
- (vvals, lvals) = unzip vals
+ let (vect_bodies, lift_bodies) = unzip vbodies
-mkClosureFns :: CEnvInfo -> [TyVar] -> Var -> CoreExprWithFVs
- -> VM (CoreExpr, CoreExpr)
-mkClosureFns info tyvars arg body
- = closedV
- . polyAbstract tyvars
- $ \mk_tlams ->
- do
- (vfn, lfn) <- mkClosureMonoFns info arg body
- return (mk_tlams vfn, mk_tlams lfn)
-
-mkClosureMonoFns :: CEnvInfo -> Var -> CoreExprWithFVs -> VM (CoreExpr, CoreExpr)
-mkClosureMonoFns info arg body
- = do
- lc_bndr <- newLocalVar FSLIT("lc") intPrimTy
- (bndrs, (vbody, lbody))
- <- vectBndrsIn (arg : cenv_vars info)
- (vectExpr lc_bndr body)
- let (varg : vbndrs, larg : lbndrs) = unzip bndrs
-
- venv_bndr <- newLocalVar FSLIT("env") vty
- lenv_bndr <- newLocalVar FSLIT("env") lty
-
- let vcase = bind_venv (Var venv_bndr) vbody vbndrs
- lcase <- bind_lenv (Var lenv_bndr) lbody lc_bndr lbndrs
- return (mkLams [venv_bndr, varg] vcase, mkLams [lenv_bndr, larg] lcase)
+ vdummy <- newDummyVar (exprType vect_scrut)
+ ldummy <- newDummyVar (exprType lift_scrut)
+ let vect_case = Case vect_scrut vdummy vty
+ (zipWith3 mk_vect_alt vect_dcs vect_bndrss vect_bodies)
+
+ lc <- builtin liftingContext
+ lbody <- combinePD vty (Var lc) sel lift_bodies
+ let lift_case = Case lift_scrut ldummy lty
+ [(DataAlt pdata_dc, sel_bndr : concat lift_bndrss,
+ lbody)]
+
+ return . vLet (vNonRec vbndr vexpr)
+ $ (vect_case, lift_case)
where
- vty = cenv_vty info
- lty = cenv_lty info
+ vect_scrut_bndr | isDeadBinder bndr = vectBndrNewIn bndr (fsLit "scrut")
+ | otherwise = vectBndrIn bndr
- arity = length (cenv_vars info)
+ alts' = sortBy (\(alt1, _, _) (alt2, _, _) -> cmp alt1 alt2) alts
- bind_venv venv vbody [] = vbody
- bind_venv venv vbody [vbndr] = Let (NonRec vbndr venv) vbody
- bind_venv venv vbody vbndrs
- = Case venv (mkWildId vty) (exprType vbody)
- [(DataAlt (tupleCon Boxed arity), vbndrs, vbody)]
+ cmp (DataAlt dc1) (DataAlt dc2) = dataConTag dc1 `compare` dataConTag dc2
+ cmp DEFAULT DEFAULT = EQ
+ cmp DEFAULT _ = LT
+ cmp _ DEFAULT = GT
+ cmp _ _ = panic "vectAlgCase/cmp"
- bind_lenv lenv lbody lc_bndr [lbndr]
+ proc_alt arity sel _ lty (DataAlt dc, bndrs, body)
+ = do
+ vect_dc <- maybeV (lookupDataCon dc)
+ let ntag = dataConTagZ vect_dc
+ tag = mkDataConTag vect_dc
+ fvs = freeVarsOf body `delVarSetList` bndrs
+
+ sel_tags <- liftM (`App` sel) (builtin (selTags arity))
+ lc <- builtin liftingContext
+ elems <- builtin (selElements arity ntag)
+
+ (vbndrs, vbody)
+ <- vectBndrsIn bndrs
+ . localV
+ $ do
+ binds <- mapM (pack_var (Var lc) sel_tags tag)
+ . filter isLocalId
+ $ varSetElems fvs
+ (ve, le) <- vectExpr body
+ return (ve, Case (elems `App` sel) lc lty
+ [(DEFAULT, [], (mkLets (concat binds) le))])
+ -- empty <- emptyPD vty
+ -- return (ve, Case (elems `App` sel) lc lty
+ -- [(DEFAULT, [], Let (NonRec flags_var flags_expr)
+ -- $ mkLets (concat binds) le),
+ -- (LitAlt (mkMachInt 0), [], empty)])
+ let (vect_bndrs, lift_bndrs) = unzip vbndrs
+ return (vect_dc, vect_bndrs, lift_bndrs, vbody)
+
+ proc_alt _ _ _ _ _ = panic "vectAlgCase/proc_alt"
+
+ mk_vect_alt vect_dc bndrs body = (DataAlt vect_dc, bndrs, body)
+
+ pack_var len tags t v
= do
- len <- lengthPA (Var lbndr)
- return . Let (NonRec lbndr lenv)
- $ Case len
- lc_bndr
- (exprType lbody)
- [(DEFAULT, [], lbody)]
-
- bind_lenv lenv lbody lc_bndr lbndrs
- = let scrut = unwrapFamInstScrut (cenv_repr_tycon info)
- (cenv_repr_tyargs info)
- lenv
- lbndrs' | null lbndrs = [mkWildId unitTy]
- | otherwise = lbndrs
- in
- return
- $ Case scrut
- (mkWildId (exprType scrut))
- (exprType lbody)
- [(DataAlt (cenv_repr_datacon info), lc_bndr : lbndrs', lbody)]
-
-vectTyAppExpr :: Var -> CoreExprWithFVs -> [Type] -> VM (CoreExpr, CoreExpr)
-vectTyAppExpr lc (_, AnnVar v) tys = vectPolyVar lc v tys
-vectTyAppExpr lc e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
+ r <- lookupVar v
+ case r of
+ Local (vv, lv) ->
+ do
+ lv' <- cloneVar lv
+ expr <- packByTagPD (idType vv) (Var lv) len tags t
+ updLEnv (\env -> env { local_vars = extendVarEnv
+ (local_vars env) v (vv, lv') })
+ return [(NonRec lv' expr)]
+
+ _ -> return []
projects / ghc-hetmet.git / blobdiff