GHC.Cmm.Dataflow.Block

Documentation

Used at the type level to indicate "open" vs "closed" structure.

Constructors

Open	An "open" structure with a unique, unnamed control-flow edge flowing in or out. "Fallthrough" and concatenation are permitted at an open point.
Closed	A "closed" structure which supports control transfer only through the use of named labels---no "fallthrough" is permitted. The number of control-flow edges is unconstrained.

type O = 'Open Source #

type C = 'Closed Source #

data MaybeO ex t where Source #

Maybe type indexed by open/closed

Constructors

JustO :: t -> MaybeO O t
NothingO :: MaybeO C t

Instances

Instances details

Functor (MaybeO ex) Source #
Instance details Defined in GHC.Cmm.Dataflow.Block Methods fmap :: (a -> b) -> MaybeO ex a -> MaybeO ex b Source # (<$) :: a -> MaybeO ex b -> MaybeO ex a Source #

type family IndexedCO (ex :: Extensibility) (a :: k) (b :: k) :: k Source #

Either type indexed by closed/open using type families

Instances

Instances details

type IndexedCO C (a :: k) (_b :: k) Source #
Instance details Defined in GHC.Cmm.Dataflow.Block type IndexedCO C (a :: k) (_b :: k) = a
type IndexedCO O (_a :: k) (b :: k) Source #
Instance details Defined in GHC.Cmm.Dataflow.Block type IndexedCO O (_a :: k) (b :: k) = b

data Block n e x where Source #

A sequence of nodes. May be any of four shapes (OO, OC, CO, CC). Open at the entry means single entry, mutatis mutandis for exit. A closedclosed block is a basic/ block and can't be extended further. Clients should avoid manipulating blocks and should stick to either nodes or graphs.

Constructors

BlockCO :: n C O -> Block n O O -> Block n C O
BlockCC :: n C O -> Block n O O -> n O C -> Block n C C
BlockOC :: Block n O O -> n O C -> Block n O C
BNil :: Block n O O
BMiddle :: n O O -> Block n O O
BCat :: Block n O O -> Block n O O -> Block n O O
BSnoc :: Block n O O -> n O O -> Block n O O
BCons :: n O O -> Block n O O -> Block n O O

Instances

Instances details

OutputableP Platform (Block CmmNode C C) Source #
Instance details Defined in GHC.Cmm.Ppr Methods pdoc :: Platform -> Block CmmNode C C -> SDoc Source #
OutputableP Platform (Block CmmNode C O) Source #
Instance details Defined in GHC.Cmm.Ppr Methods pdoc :: Platform -> Block CmmNode C O -> SDoc Source #
OutputableP Platform (Block CmmNode O C) Source #
Instance details Defined in GHC.Cmm.Ppr Methods pdoc :: Platform -> Block CmmNode O C -> SDoc Source #
OutputableP Platform (Block CmmNode O O) Source #
Instance details Defined in GHC.Cmm.Ppr Methods pdoc :: Platform -> Block CmmNode O O -> SDoc Source #
OutputableP Platform (Graph CmmNode e x) Source #
Instance details Defined in GHC.Cmm.Ppr Methods pdoc :: Platform -> Graph CmmNode e x -> SDoc Source #
NonLocal n => NonLocal (Block n) Source #
Instance details Defined in GHC.Cmm.Dataflow.Graph Methods entryLabel :: forall (x :: Extensibility). Block n C x -> Label Source # successors :: forall (e :: Extensibility). Block n e C -> [Label] Source #

blockAppend :: Block n e O -> Block n O x -> Block n e x Source #

blockConcat :: [Block n O O] -> Block n O O Source #

blockCons :: n O O -> Block n O x -> Block n O x Source #

blockFromList :: [n O O] -> Block n O O Source #

blockJoin :: n C O -> Block n O O -> n O C -> Block n C C Source #

blockJoinHead :: n C O -> Block n O x -> Block n C x Source #

blockJoinTail :: Block n e O -> n O C -> Block n e C Source #

blockSnoc :: Block n e O -> n O O -> Block n e O Source #

blockSplit :: Block n C C -> (n C O, Block n O O, n O C) Source #

Split a closed block into its entry node, open middle block, and exit node.

blockSplitHead :: Block n C x -> (n C O, Block n O x) Source #

blockSplitTail :: Block n e C -> (Block n e O, n O C) Source #

blockToList :: Block n O O -> [n O O] Source #

emptyBlock :: Block n O O Source #

firstNode :: Block n C x -> n C O Source #

foldBlockNodesB :: forall n a. (forall e x. n e x -> a -> a) -> forall e x. Block n e x -> IndexedCO x a a -> IndexedCO e a a Source #

foldBlockNodesB3 :: forall n a b c. (n C O -> b -> c, n O O -> b -> b, n O C -> a -> b) -> forall e x. Block n e x -> IndexedCO x a b -> IndexedCO e c b Source #

foldBlockNodesF :: forall n a. (forall e x. n e x -> a -> a) -> forall e x. Block n e x -> IndexedCO e a a -> IndexedCO x a a Source #

isEmptyBlock :: Block n e x -> Bool Source #

lastNode :: Block n x C -> n O C Source #

mapBlock :: (forall e x. n e x -> n' e x) -> Block n e x -> Block n' e x Source #

map a function over the nodes of a Block

mapBlock' :: (forall e x. n e x -> n' e x) -> Block n e x -> Block n' e x Source #

A strict mapBlock

mapBlock3' :: forall n n' e x. (n C O -> n' C O, n O O -> n' O O, n O C -> n' O C) -> Block n e x -> Block n' e x Source #

map over a block, with different functions to apply to first nodes, middle nodes and last nodes respectively. The map is strict.

replaceFirstNode :: Block n C x -> n C O -> Block n C x Source #

replaceLastNode :: Block n x C -> n O C -> Block n x C Source #