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Synopsis | ||||||||

Documentation | ||||||||

data AGraph m l | ||||||||

(<*>) :: AGraph m l -> AGraph m l -> AGraph m l | ||||||||

catAGraphs :: [AGraph m l] -> AGraph m l | ||||||||

emptyAGraph :: AGraph m l | ||||||||

A graph is built up by splicing together graphs each containing a
single node (where a label is considered a first node. The empty
graph is a left and right unit for splicing. All of the AGraph
constructors (even complex ones like mkIfThenElse, as well as the
splicing operation *, are constant-time operations.
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withFreshLabel :: String -> (BlockId -> AGraph m l) -> AGraph m l | ||||||||

This function provides access to fresh labels without requiring clients to be programmed monadically. | ||||||||

withUnique :: (Unique -> AGraph m l) -> AGraph m l | ||||||||

mkMiddle :: m -> AGraph m l | ||||||||

mkMiddles :: [m] -> AGraph m l | ||||||||

mkLast :: (Outputable m, Outputable l, LastNode l) => l -> AGraph m l | ||||||||

mkZTail :: (Outputable m, Outputable l, LastNode l) => ZTail m l -> AGraph m l | ||||||||

mkBranch :: (Outputable m, Outputable l, LastNode l) => BlockId -> AGraph m l | ||||||||

mkLabel :: LastNode l => BlockId -> AGraph m l | ||||||||

mkIfThenElse :: (Outputable m, Outputable l, LastNode l) => (BlockId -> BlockId -> AGraph m l) -> AGraph m l -> AGraph m l -> AGraph m l | ||||||||

For the structured control-flow constructs, a condition is represented as a function that takes as arguments the labels to goto on truth or falsehood. mkIfThenElse mk_cond then else = (mk_cond L1 L2) *> L1: then <* goto J *> L2: else <* goto J * J: where L1, L2, J are fresh | ||||||||

mkWhileDo :: (Outputable m, Outputable l, LastNode l) => (BlockId -> BlockId -> AGraph m l) -> AGraph m l -> AGraph m l | ||||||||

outOfLine :: (LastNode l, Outputable m, Outputable l) => AGraph m l -> AGraph m l | ||||||||

The argument is an AGraph that has an empty entry sequence and no exit sequence. The result is a new AGraph that has an empty entry sequence connected to an empty exit sequence, with the original graph sitting to the side out-of-line. Example: mkMiddle (x = 3) *> outOfLine (mkLabel L <* ...stuff...) * mkMiddle (y = x) Control will flow directly from x=3 to y=x; the block starting with L is on the side. N.B. algebraically forall g g' : g *> outOfLine g' == outOfLine g' <* g | ||||||||

emptyGraph :: Graph m l | ||||||||

The functions below build Graphs directly; for convenience, they are included here with the rest of the constructor functions. | ||||||||

graphOfMiddles :: [m] -> Graph m l | ||||||||

graphOfZTail :: ZTail m l -> Graph m l | ||||||||

lgraphOfAGraph | ||||||||

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graphOfAGraph :: AGraph m l -> UniqSM (Graph m l) | ||||||||

Converting an abstract graph to a concrete form is expensive: the cost is linear in the number of nodes in the answer, plus N log N in the number of basic blocks. The conversion is also monadic because it may require the allocation of fresh, unique labels. | ||||||||

labelAGraph | ||||||||

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Produced by Haddock version 2.4.2 |