X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=compiler%2Fvectorise%2FVectorise.hs;h=bee160c467d89bc666516c1d813a9c4f70f260dd;hb=28bb3c3c8c1467ca31db59f0b3d1a21df6607742;hp=024ae45a20bbb1ad7055ebba5001c1a5f203304e;hpb=0e0e3d99dae75cc21e5d5202cdfb57d05a81ee37;p=ghc-hetmet.git

diff --git a/compiler/vectorise/Vectorise.hs b/compiler/vectorise/Vectorise.hs
index 024ae45..bee160c 100644
--- a/compiler/vectorise/Vectorise.hs
+++ b/compiler/vectorise/Vectorise.hs
@@ -1,9 +1,3 @@
-{-# 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 Vectorise( vectorise )
 where
@@ -13,56 +7,45 @@ 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 CoreFVs
-import SimplMonad           ( SimplCount, zeroSimplCount )
-import Rules                ( RuleBase )
+import CoreMonad            ( CoreM, getHscEnv, liftIO )
 import DataCon
 import TyCon
 import Type
 import FamInstEnv           ( extendFamInstEnvList )
-import InstEnv              ( extendInstEnvList )
 import Var
 import VarEnv
 import VarSet
-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 )
+import DsMonad
 
 import Literal              ( Literal, mkMachInt )
-import PrelNames
 import TysWiredIn
-import TysPrim              ( intPrimTy )
-import BasicTypes           ( Boxity(..) )
 
 import Outputable
 import FastString
-import Control.Monad        ( liftM, liftM2, zipWithM, mapAndUnzipM )
+import Control.Monad        ( liftM, liftM2, zipWithM )
 import Data.List            ( sortBy, unzip4 )
 
-vectorise :: HscEnv -> UniqSupply -> RuleBase -> ModGuts
-          -> IO (SimplCount, ModGuts)
-vectorise hsc_env _ _ guts
+vectorise :: PackageId -> ModGuts -> CoreM ModGuts
+vectorise backend guts = do
+    hsc_env <- getHscEnv
+    liftIO $ vectoriseIO backend 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
@@ -163,14 +146,6 @@ vectBndrNewIn v fs p
       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
@@ -268,9 +243,6 @@ vectExpr (_, AnnCase scrut bndr ty alts)
   where
     scrut_ty = exprType (deAnnotate scrut)
 
-vectExpr (_, AnnCase expr bndr ty alts)
-  = panic "vectExpr: case"
-
 vectExpr (_, AnnLet (AnnNonRec bndr rhs) body)
   = do
       vrhs <- localV . inBind bndr $ vectPolyExpr rhs
@@ -292,12 +264,43 @@ vectExpr (_, AnnLet (AnnRec bs) body)
                       $ vectExpr rhs
 
 vectExpr e@(fvs, AnnLam bndr _)
-  | not (isId bndr) = pprPanic "vectExpr" (ppr $ deAnnotate e)
-  | otherwise = vectLam fvs bs body
+  | isId bndr = onlyIfV (isEmptyVarSet fvs) (vectScalarLam bs $ deAnnotate body)
+                `orElseV` vectLam fvs bs body
   where
     (bs,body) = collectAnnValBinders e
 
-vectExpr e = pprPanic "vectExpr" (ppr $ deAnnotate e)
+vectExpr e = cantVectorise "Can't vectorise expression" (ppr $ deAnnotate e)
+
+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)
+            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
+            lclo <- liftPA (Var clo_var)
+            return (Var clo_var, lclo)
+  where
+    arg_tys = map idType args
+    res_ty  = exprType body
+
+    is_scalar_ty ty | Just (tycon, []) <- splitTyConApp_maybe ty
+                    = tycon == intTyCon
+                      || tycon == floatTyCon
+                      || tycon == doubleTyCon
+
+                    | otherwise = False
+
+    is_scalar vs (Var v)     = v `elemVarSet` vs
+    is_scalar _ e@(Lit l)    = is_scalar_ty $ exprType e
+    is_scalar vs (App e1 e2) = is_scalar vs e1 && is_scalar vs e2
+    is_scalar _ _            = False
 
 vectLam :: VarSet -> [Var] -> CoreExprWithFVs -> VM VExpr
 vectLam fvs bs body
@@ -320,9 +323,8 @@ vectLam fvs bs body
 
 vectTyAppExpr :: CoreExprWithFVs -> [Type] -> VM VExpr
 vectTyAppExpr (_, AnnVar v) tys = vectPolyVar v tys
-vectTyAppExpr e tys = pprPanic "vectTyAppExpr" (ppr $ deAnnotate e)
-
-type CoreAltWithFVs = AnnAlt Id VarSet
+vectTyAppExpr e tys = cantVectorise "Can't vectorise expression"
+                        (ppr $ deAnnotate e `mkTyApps` tys)
 
 -- We convert
 --
@@ -339,21 +341,24 @@ type CoreAltWithFVs = AnnAlt Id VarSet
 --
 
 -- FIXME: this is too lazy
-vectAlgCase tycon ty_args scrut bndr ty [(DEFAULT, [], body)]
+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
 
-vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, [], body)]
+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
 
-vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
+vectAlgCase tycon _ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
   = do
       vect_tc    <- maybeV (lookupTyCon tycon)
       (vty, lty) <- vectAndLiftType ty
@@ -362,7 +367,7 @@ vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
                                 . vectBndrsIn bndrs
                                 $ vectExpr body
 
-      (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr)
+      (vscrut, arr_tc, _arg_tys) <- mkVScrut (vVar vbndr)
       vect_dc <- maybeV (lookupDataCon dc)
       let [arr_dc] = tyConDataCons arr_tc
       repr <- mkRepr vect_tc
@@ -373,7 +378,7 @@ vectAlgCase tycon ty_args scrut bndr ty [(DataAlt dc, bndrs, body)]
     vect_scrut_bndr | isDeadBinder bndr = vectBndrNewIn bndr (fsLit "scrut")
                     | otherwise         = vectBndrIn bndr
 
-vectAlgCase tycon ty_args scrut bndr ty alts
+vectAlgCase tycon _ty_args scrut bndr ty alts
   = do
       vect_tc     <- maybeV (lookupTyCon tycon)
       (vty, lty)  <- vectAndLiftType ty
@@ -385,17 +390,19 @@ vectAlgCase tycon ty_args scrut bndr ty alts
       let (vect_dcs, vect_bndrss, lift_bndrss, vbodies) = unzip4 valts
 
       vexpr <- vectExpr scrut
-      (vscrut, arr_tc, arg_tys) <- mkVScrut (vVar vbndr)
+      (vscrut, arr_tc, _arg_tys) <- mkVScrut (vVar vbndr)
       let [arr_dc] = tyConDataCons arr_tc
 
       let (vect_scrut,  lift_scrut)  = vscrut
           (vect_bodies, lift_bodies) = unzip vbodies
 
-      let vect_case = Case vect_scrut (mkWildId (exprType vect_scrut)) vty
+      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)
 
       lbody <- combinePA vty len sel indices lift_bodies
-      let lift_case = Case lift_scrut (mkWildId (exprType lift_scrut)) lty
+      let lift_case = Case lift_scrut ldummy lty
                            [(DataAlt arr_dc, shape_bndrs ++ concat lift_bndrss,
                              lbody)]
 
@@ -411,6 +418,7 @@ vectAlgCase tycon ty_args scrut bndr ty alts
     cmp DEFAULT       DEFAULT       = EQ
     cmp DEFAULT       _             = LT
     cmp _             DEFAULT       = GT
+    cmp _             _             = panic "vectAlgCase/cmp"
 
     proc_alt sel vty lty (DataAlt dc, bndrs, body)
       = do
@@ -423,6 +431,7 @@ vectAlgCase tycon ty_args scrut bndr ty alts
              $ vectExpr body
 
           return (vect_dc, vect_bndrs, lift_bndrs, vbody)
+    proc_alt _ _ _ _ = panic "vectAlgCase/proc_alt"
 
     vect_alt_bndrs [] p
       = do