union,
addConflict, delConflict, addConflicts,
addCoalesce, delCoalesce,
- addExclusion,
+ addExclusion, addExclusions,
addPreference,
coalesceNodes, coalesceGraph,
freezeNode, freezeOneInGraph, freezeAllInGraph,
import Outputable
import Unique
import UniqSet
-import LazyUniqFM
+import UniqFM
import Data.List hiding (union)
import Data.Maybe
(newNode u (getClass u)) { nodeExclusions = unitUniqSet color }
u
+addExclusions
+ :: (Uniquable k, Uniquable color)
+ => k -> (k -> cls) -> [color]
+ -> Graph k cls color -> Graph k cls color
+
+addExclusions u getClass colors graph
+ = foldr (addExclusion u getClass) graph colors
+
-- | Add a coalescence edge to the graph, creating nodes if requried.
-- It is considered adventageous to assign the same color to nodes in a coalesence.
pairs -> coalesceGraph' aggressive triv graph' (reverse pairs ++ kkPairsAcc)
--- | Coalesce this pair of nodes unconditionally / agressively.
+-- | Coalesce this pair of nodes unconditionally \/ agressively.
-- The resulting node is the one with the least key.
--
-- returns: Just the pair of keys if the nodes were coalesced
, not $ elementOfUniqSet kMin (nodeConflicts nMax)
, not $ elementOfUniqSet kMax (nodeConflicts nMin)
+ -- can't coalesce the same node
+ , nodeId nMin /= nodeId nMax
+
= coalesceNodes_merge aggressive triv graph kMin kMax nMin nMax
-- don't do the coalescing after all
| not (isNothing (nodeColor nMin) && isNothing (nodeColor nMax))
= error "GraphOps.coalesceNodes: can't coalesce colored nodes."
- | nodeId nMin == nodeId nMax
- = error "GraphOps.coalesceNodes: can't coalesce the same node."
-
---
| otherwise
= let
-- classes.. this is just a heuristic, after all.
--
-- IDEA: freezing a node might free it up for Simplify.. would be good to check for triv
--- right here, and add it to a worklist if known triv/non-move nodes.
+-- right here, and add it to a worklist if known triv\/non-move nodes.
--
freezeOneInGraph
:: (Uniquable k, Outputable k)