2 module Vectorise.Monad (
3 module Vectorise.Monad.Base,
4 module Vectorise.Monad.Naming,
5 module Vectorise.Monad.Local,
6 module Vectorise.Monad.Global,
7 module Vectorise.Monad.InstEnv,
17 maybeCantVectoriseVarM,
25 import Vectorise.Monad.Base
26 import Vectorise.Monad.Naming
27 import Vectorise.Monad.Local
28 import Vectorise.Monad.Global
29 import Vectorise.Monad.InstEnv
30 import Vectorise.Builtins
33 import HscTypes hiding ( MonadThings(..) )
34 import MonadUtils (liftIO)
45 -- | Run a vectorisation computation.
51 -> IO (Maybe (VectInfo, a))
53 initV pkg hsc_env guts info p
55 -- XXX: ignores error messages and warnings, check that this is
56 -- indeed ok (the use of "Just r" suggests so)
57 (_,Just r) <- initDs hsc_env (mg_module guts)
65 builtins <- initBuiltins pkg
66 builtin_vars <- initBuiltinVars builtins
67 builtin_tycons <- initBuiltinTyCons builtins
68 let builtin_datacons = initBuiltinDataCons builtins
69 builtin_boxed <- initBuiltinBoxedTyCons builtins
70 builtin_scalars <- initBuiltinScalars builtins
72 eps <- liftIO $ hscEPS hsc_env
73 let famInstEnvs = (eps_fam_inst_env eps, mg_fam_inst_env guts)
74 instEnvs = (eps_inst_env eps, mg_inst_env guts)
76 builtin_prs <- initBuiltinPRs builtins instEnvs
77 builtin_pas <- initBuiltinPAs builtins instEnvs
79 let genv = extendImportedVarsEnv builtin_vars
80 . extendScalars builtin_scalars
81 . extendTyConsEnv builtin_tycons
82 . extendDataConsEnv builtin_datacons
83 . extendPAFunsEnv builtin_pas
84 . setPRFunsEnv builtin_prs
85 . setBoxedTyConsEnv builtin_boxed
86 $ initGlobalEnv info instEnvs famInstEnvs
88 r <- runVM p builtins genv emptyLocalEnv
90 Yes genv _ x -> return $ Just (new_info genv, x)
93 new_info genv = updVectInfo genv (mg_types guts) info
96 -- Builtins -------------------------------------------------------------------
97 -- | Lift a desugaring computation using the `Builtins` into the vectorisation monad.
98 liftBuiltinDs :: (Builtins -> DsM a) -> VM a
99 liftBuiltinDs p = VM $ \bi genv lenv -> do { x <- p bi; return (Yes genv lenv x)}
102 -- | Project something from the set of builtins.
103 builtin :: (Builtins -> a) -> VM a
104 builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
107 -- | Lift a function using the `Builtins` into the vectorisation monad.
108 builtins :: (a -> Builtins -> b) -> VM (a -> b)
109 builtins f = VM $ \bi genv lenv -> return (Yes genv lenv (`f` bi))
112 -- Var ------------------------------------------------------------------------
113 -- | Lookup the vectorised and\/or lifted versions of this variable.
114 -- If it's in the global environment we get the vectorised version.
115 -- If it's in the local environment we get both the vectorised and lifted version.
116 lookupVar :: Var -> VM (Scope Var (Var, Var))
118 = do r <- readLEnv $ \env -> lookupVarEnv (local_vars env) v
120 Just e -> return (Local e)
121 Nothing -> liftM Global
122 . maybeCantVectoriseVarM v
123 . readGEnv $ \env -> lookupVarEnv (global_vars env) v
125 maybeCantVectoriseVarM :: Monad m => Var -> m (Maybe Var) -> m Var
126 maybeCantVectoriseVarM v p
134 | Just _ <- isClassOpId_maybe var
135 = cantVectorise "ClassOpId not vectorised:" (ppr var)
138 = cantVectorise "Variable not vectorised:" (ppr var)
141 -- Primitives -----------------------------------------------------------------
142 lookupPrimPArray :: TyCon -> VM (Maybe TyCon)
143 lookupPrimPArray = liftBuiltinDs . primPArray
145 lookupPrimMethod :: TyCon -> String -> VM (Maybe Var)
146 lookupPrimMethod tycon = liftBuiltinDs . primMethod tycon