ghc-6.10.4: The GHC API Contents Index

RegSpillCost

Synopsis

type SpillCostRecord = (Reg, Int, Int, Int) plusSpillCostRecord :: SpillCostRecord -> SpillCostRecord -> SpillCostRecord pprSpillCostRecord :: Graph Reg RegClass Reg -> SpillCostRecord -> SDoc type SpillCostInfo = UniqFM SpillCostRecord zeroSpillCostInfo :: SpillCostInfo plusSpillCostInfo :: SpillCostInfo -> SpillCostInfo -> SpillCostInfo slurpSpillCostInfo :: LiveCmmTop -> SpillCostInfo chooseSpill :: SpillCostInfo -> Graph Reg RegClass Reg -> Reg lifeMapFromSpillCostInfo :: SpillCostInfo -> UniqFM (Reg, Int)

Documentation

type SpillCostRecord = (Reg, Int, Int, Int)

plusSpillCostRecord :: SpillCostRecord -> SpillCostRecord -> SpillCostRecord

pprSpillCostRecord :: Graph Reg RegClass Reg -> SpillCostRecord -> SDoc

Show a spill cost record, including the degree from the graph and final calulated spill cos

type SpillCostInfo = UniqFM SpillCostRecord

zeroSpillCostInfo :: SpillCostInfo

plusSpillCostInfo :: SpillCostInfo -> SpillCostInfo -> SpillCostInfo

Add two spillCostInfos

slurpSpillCostInfo :: LiveCmmTop -> SpillCostInfo

Slurp out information used for determining spill costs for each vreg, the number of times it was written to, read from, and the number of instructions it was live on entry to (lifetime)

chooseSpill :: SpillCostInfo -> Graph Reg RegClass Reg -> Reg

Choose a node to spill from this graph

lifeMapFromSpillCostInfo :: SpillCostInfo -> UniqFM (Reg, Int)

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