2 ( BlockId(..), mkBlockId -- ToDo: BlockId should be abstract, but it isn't yet
3 , BlockEnv, emptyBlockEnv, lookupBlockEnv, extendBlockEnv, mkBlockEnv, mapBlockEnv
4 , BlockSet, emptyBlockSet, elemBlockSet, extendBlockSet, sizeBlockSet, mkBlockSet
5 , foldBlockEnv, blockLbl, infoTblLbl
16 ----------------------------------------------------------------
17 --- Block Ids, their environments, and their sets
19 {- Note [Unique BlockId]
20 ~~~~~~~~~~~~~~~~~~~~~~~~
21 Although a 'BlockId' is a local label, for reasons of implementation,
22 'BlockId's must be unique within an entire compilation unit. The reason
23 is that each local label is mapped to an assembly-language label, and in
24 most assembly languages allow, a label is visible throughout the enitre
25 compilation unit in which it appears.
28 newtype BlockId = BlockId Unique
31 instance Uniquable BlockId where
32 getUnique (BlockId u) = u
34 mkBlockId :: Unique -> BlockId
35 mkBlockId uniq = BlockId uniq
37 instance Show BlockId where
38 show (BlockId u) = show u
40 instance Outputable BlockId where
43 blockLbl :: BlockId -> CLabel
44 blockLbl id = mkEntryLabel (mkFCallName (getUnique id) "block") NoCafRefs
46 infoTblLbl :: BlockId -> CLabel
47 infoTblLbl id = mkInfoTableLabel (mkFCallName (getUnique id) "block") NoCafRefs
49 type BlockEnv a = UniqFM {- BlockId -} a
50 emptyBlockEnv :: BlockEnv a
51 emptyBlockEnv = emptyUFM
52 mkBlockEnv :: [(BlockId,a)] -> BlockEnv a
53 mkBlockEnv = listToUFM
54 lookupBlockEnv :: BlockEnv a -> BlockId -> Maybe a
55 lookupBlockEnv = lookupUFM
56 extendBlockEnv :: BlockEnv a -> BlockId -> a -> BlockEnv a
57 extendBlockEnv = addToUFM
58 mapBlockEnv :: (a -> b) -> BlockEnv a -> BlockEnv b
60 foldBlockEnv :: (BlockId -> a -> b -> b) -> b -> BlockEnv a -> b
61 foldBlockEnv f = foldUFM_Directly (\u x y -> f (mkBlockId u) x y)
63 type BlockSet = UniqSet BlockId
64 emptyBlockSet :: BlockSet
65 emptyBlockSet = emptyUniqSet
66 elemBlockSet :: BlockId -> BlockSet -> Bool
67 elemBlockSet = elementOfUniqSet
68 extendBlockSet :: BlockSet -> BlockId -> BlockSet
69 extendBlockSet = addOneToUniqSet
70 mkBlockSet :: [BlockId] -> BlockSet
71 mkBlockSet = mkUniqSet
72 sizeBlockSet :: BlockSet -> Int
73 sizeBlockSet = sizeUniqSet