RegAlloc.Graph.SpillCost
- type SpillCostRecord = (VirtualReg, Int, Int, Int)
- plusSpillCostRecord :: SpillCostRecord -> SpillCostRecord -> SpillCostRecord
- pprSpillCostRecord :: (VirtualReg -> RegClass) -> (Reg -> SDoc) -> Graph VirtualReg RegClass RealReg -> SpillCostRecord -> SDoc
- type SpillCostInfo = UniqFM SpillCostRecord
- zeroSpillCostInfo :: SpillCostInfo
- plusSpillCostInfo :: SpillCostInfo -> SpillCostInfo -> SpillCostInfo
- slurpSpillCostInfo :: (Outputable instr, Instruction instr) => LiveCmmTop instr -> SpillCostInfo
- chooseSpill :: SpillCostInfo -> Graph VirtualReg RegClass RealReg -> VirtualReg
- lifeMapFromSpillCostInfo :: SpillCostInfo -> UniqFM (VirtualReg, Int)
Documentation
type SpillCostRecord = (VirtualReg, Int, Int, Int)Source
pprSpillCostRecord :: (VirtualReg -> RegClass) -> (Reg -> SDoc) -> Graph VirtualReg RegClass RealReg -> SpillCostRecord -> SDocSource
Show a spill cost record, including the degree from the graph and final calulated spill cos
plusSpillCostInfo :: SpillCostInfo -> SpillCostInfo -> SpillCostInfoSource
Add two spillCostInfos
slurpSpillCostInfo :: (Outputable instr, Instruction instr) => LiveCmmTop instr -> SpillCostInfoSource
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 VirtualReg RegClass RealReg -> VirtualRegSource
Choose a node to spill from this graph