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(..) )
44 -- | Run a vectorisation computation.
50 -> IO (Maybe (VectInfo, a))
52 initV pkg hsc_env guts info p
54 -- XXX: ignores error messages and warnings, check that this is
55 -- indeed ok (the use of "Just r" suggests so)
56 (_,Just r) <- initDs hsc_env (mg_module guts)
64 builtins <- initBuiltins pkg
65 builtin_vars <- initBuiltinVars builtins
66 builtin_tycons <- initBuiltinTyCons builtins
67 let builtin_datacons = initBuiltinDataCons builtins
68 builtin_boxed <- initBuiltinBoxedTyCons builtins
69 builtin_scalars <- initBuiltinScalars builtins
71 eps <- liftIO $ hscEPS hsc_env
72 let famInstEnvs = (eps_fam_inst_env eps, mg_fam_inst_env guts)
73 instEnvs = (eps_inst_env eps, mg_inst_env guts)
75 builtin_prs <- initBuiltinPRs builtins instEnvs
76 builtin_pas <- initBuiltinPAs builtins instEnvs
78 let genv = extendImportedVarsEnv builtin_vars
79 . extendScalars builtin_scalars
80 . extendTyConsEnv builtin_tycons
81 . extendDataConsEnv builtin_datacons
82 . extendPAFunsEnv builtin_pas
83 . setPRFunsEnv builtin_prs
84 . setBoxedTyConsEnv builtin_boxed
85 $ initGlobalEnv info instEnvs famInstEnvs
87 r <- runVM p builtins genv emptyLocalEnv
89 Yes genv _ x -> return $ Just (new_info genv, x)
92 new_info genv = updVectInfo genv (mg_types guts) info
95 -- Builtins -------------------------------------------------------------------
96 -- | Lift a desugaring computation using the `Builtins` into the vectorisation monad.
97 liftBuiltinDs :: (Builtins -> DsM a) -> VM a
98 liftBuiltinDs p = VM $ \bi genv lenv -> do { x <- p bi; return (Yes genv lenv x)}
101 -- | Project something from the set of builtins.
102 builtin :: (Builtins -> a) -> VM a
103 builtin f = VM $ \bi genv lenv -> return (Yes genv lenv (f bi))
106 -- | Lift a function using the `Builtins` into the vectorisation monad.
107 builtins :: (a -> Builtins -> b) -> VM (a -> b)
108 builtins f = VM $ \bi genv lenv -> return (Yes genv lenv (`f` bi))
111 -- Var ------------------------------------------------------------------------
112 -- | Lookup the vectorised and\/or lifted versions of this variable.
113 -- If it's in the global environment we get the vectorised version.
114 -- If it's in the local environment we get both the vectorised and lifted version.
115 lookupVar :: Var -> VM (Scope Var (Var, Var))
117 = do r <- readLEnv $ \env -> lookupVarEnv (local_vars env) v
119 Just e -> return (Local e)
120 Nothing -> liftM Global
121 . maybeCantVectoriseVarM v
122 . readGEnv $ \env -> lookupVarEnv (global_vars env) v
124 maybeCantVectoriseVarM :: Monad m => Var -> m (Maybe Var) -> m Var
125 maybeCantVectoriseVarM v p
133 | Just _ <- isClassOpId_maybe var
134 = cantVectorise "ClassOpId not vectorised:" (ppr var)
137 = cantVectorise "Variable not vectorised:" (ppr var)
140 -- Primitives -----------------------------------------------------------------
141 lookupPrimPArray :: TyCon -> VM (Maybe TyCon)
142 lookupPrimPArray = liftBuiltinDs . primPArray
144 lookupPrimMethod :: TyCon -> String -> VM (Maybe Var)
145 lookupPrimMethod tycon = liftBuiltinDs . primMethod tycon