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 :: (PlatformOutputable instr, Instruction instr) => Platform -> LiveCmmTop statics 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 :: (PlatformOutputable instr, Instruction instr) => Platform -> LiveCmmTop statics 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