Safe Haskell | None |
---|---|
Language | Haskell2010 |
- 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) => Platform -> LiveCmmDecl statics instr -> SpillCostInfo
- chooseSpill :: SpillCostInfo -> Graph VirtualReg RegClass RealReg -> VirtualReg
- lifeMapFromSpillCostInfo :: SpillCostInfo -> UniqFM (VirtualReg, Int)
Documentation
type SpillCostRecord = (VirtualReg, Int, Int, Int) #
Records the expected cost to spill some regster.
plusSpillCostRecord :: SpillCostRecord -> SpillCostRecord -> SpillCostRecord #
Add two spill cost records.
pprSpillCostRecord :: (VirtualReg -> RegClass) -> (Reg -> SDoc) -> Graph VirtualReg RegClass RealReg -> SpillCostRecord -> SDoc #
Show a spill cost record, including the degree from the graph and final calulated spill cost.
type SpillCostInfo = UniqFM SpillCostRecord #
Map of SpillCostRecord
zeroSpillCostInfo :: SpillCostInfo #
An empty map of spill costs.
plusSpillCostInfo :: SpillCostInfo -> SpillCostInfo -> SpillCostInfo #
Add two spill cost infos.
slurpSpillCostInfo :: (Outputable instr, Instruction instr) => Platform -> LiveCmmDecl statics instr -> 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 VirtualReg RegClass RealReg -> VirtualReg #
Choose a node to spill from this graph
lifeMapFromSpillCostInfo :: SpillCostInfo -> UniqFM (VirtualReg, Int) #
Extract a map of register lifetimes from a SpillCostInfo
.