1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
-- | Builtin types and functions used by the vectoriser.
-- The source program uses functions from Data.Array.Parallel, which the vectoriser rewrites
-- to use equivalent vectorised versions in the DPH backend packages.
--
-- The `Builtins` structure holds the name of all the things in the DPH packages
-- we will need. We can get specific things using the selectors, which print a
-- civilized panic message if the specified thing cannot be found.
--
module Vectorise.Builtins (
-- * Builtins
Builtins(..),
indexBuiltin,
-- * Wrapped selectors
selTy,
selReplicate,
selPick,
selTags,
selElements,
sumTyCon,
prodTyCon,
prodDataCon,
combinePDVar,
scalarZip,
closureCtrFun,
-- * Initialisation
initBuiltins, initBuiltinVars, initBuiltinTyCons, initBuiltinDataCons,
initBuiltinPAs, initBuiltinPRs,
initBuiltinBoxedTyCons, initBuiltinScalars,
-- * Lookup
primMethod,
primPArray
) where
import Vectorise.Builtins.Base
import Vectorise.Builtins.Modules
import Vectorise.Builtins.Initialise
import TysPrim
import IfaceEnv
import TyCon
import DsMonad
import NameEnv
import Name
import Var
import Control.Monad
-- | Lookup a method function given its name and instance type.
primMethod :: TyCon -> String -> Builtins -> DsM (Maybe Var)
primMethod tycon method (Builtins { dphModules = mods })
| Just suffix <- lookupNameEnv prim_ty_cons (tyConName tycon)
= liftM Just
$ dsLookupGlobalId =<< lookupOrig (dph_Unboxed mods)
(mkVarOcc $ method ++ suffix)
| otherwise = return Nothing
-- | Lookup the representation type we use for PArrays that contain a given element type.
primPArray :: TyCon -> Builtins -> DsM (Maybe TyCon)
primPArray tycon (Builtins { dphModules = mods })
| Just suffix <- lookupNameEnv prim_ty_cons (tyConName tycon)
= liftM Just
$ dsLookupTyCon =<< lookupOrig (dph_Unboxed mods)
(mkTcOcc $ "PArray" ++ suffix)
| otherwise = return Nothing
prim_ty_cons :: NameEnv String
prim_ty_cons = mkNameEnv [mk_prim intPrimTyCon]
where
mk_prim tycon = (tyConName tycon, '_' : getOccString tycon)
|
