+{-# OPTIONS_GHC -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/WorkingConventions#Warnings
+-- for details
+
module Vectorise( vectorise )
where
import Var
import VarEnv
import VarSet
-import Name ( mkSysTvName, getName )
+import Name ( Name, mkSysTvName, getName )
import NameEnv
import Id
import MkId ( unwrapFamInstScrut )
import OccName
+import Module ( Module )
import DsMonad hiding (mapAndUnzipM)
import DsUtils ( mkCoreTup, mkCoreTupTy )
vectModule :: ModGuts -> VM ModGuts
vectModule guts
= do
- (types', fam_insts, pa_insts) <- vectTypeEnv (mg_types guts)
+ (types', fam_insts, tc_binds) <- 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')
+ let fam_inst_env' = extendFamInstEnvList (mg_fam_inst_env guts) fam_insts
+ updGEnv (setFamInstEnv fam_inst_env')
- dicts <- mapM buildPADict pa_insts
- binds' <- mapM vectTopBind (mg_binds guts)
+ -- 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
}
x <- p
return (vv, x)
+vectBndrIn' :: Var -> (VVar -> VM a) -> VM (VVar, a)
+vectBndrIn' v p
+ = localV
+ $ do
+ vv <- vectBndr v
+ x <- p vv
+ return (vv, x)
+
vectBndrsIn :: [Var] -> VM a -> VM ([VVar], a)
vectBndrsIn vs p
= localV
vectExpr (_, AnnApp fn arg)
= do
- fn' <- vectExpr fn
- arg' <- vectExpr arg
- mkClosureApp fn' arg'
+ 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 (_, AnnCase scrut bndr ty alts)
+ | isAlgType scrut_ty
+ = vectAlgCase scrut bndr ty alts
+ where
+ scrut_ty = exprType (deAnnotate scrut)
vectExpr (_, AnnCase expr bndr ty alts)
= panic "vectExpr: case"
vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
+type CoreAltWithFVs = AnnAlt Id VarSet
+
+-- 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.
+--
+
+-- FIXME: this is too lazy
+vectAlgCase scrut bndr ty [(DEFAULT, [], body)]
+ = do
+ vscrut <- vectExpr scrut
+ vty <- vectType ty
+ lty <- mkPArrayType vty
+ (vbndr, vbody) <- vectBndrIn bndr (vectExpr body)
+ return $ vCaseDEFAULT vscrut vbndr vty lty vbody
+
+vectAlgCase scrut bndr ty [(DataAlt dc, bndrs, body)]
+ = do
+ vty <- vectType ty
+ lty <- mkPArrayType vty
+ vexpr <- vectExpr scrut
+ (vbndr, (vbndrs, vbody)) <- vectBndrIn bndr
+ . vectBndrsIn bndrs
+ $ vectExpr body
+
+ (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr)
+ vect_dc <- maybeV (lookupDataCon dc)
+ let [arr_dc] = tyConDataCons arr_tc
+ let shape_tys = take (dataConRepArity arr_dc - length bndrs)
+ (dataConRepArgTys arr_dc)
+ shape_bndrs <- mapM (newLocalVar FSLIT("s")) shape_tys
+ return . vLet (vNonRec vbndr vexpr)
+ $ vCaseProd vscrut vty lty vect_dc arr_dc shape_bndrs vbndrs vbody