ghc-6.12.2: The GHC API Source code Contents Index

RegAlloc.Graph.Stats

Synopsis

data RegAllocStats instr = RegAllocStatsStart { raLiveCmm :: [LiveCmmTop instr] raGraph :: Graph VirtualReg RegClass RealReg raSpillCosts :: SpillCostInfo } | RegAllocStatsSpill { raGraph :: Graph VirtualReg RegClass RealReg raCoalesced :: UniqFM VirtualReg raSpillStats :: SpillStats raSpillCosts :: SpillCostInfo raSpilled :: [LiveCmmTop instr] } | RegAllocStatsColored { raGraph :: Graph VirtualReg RegClass RealReg raGraphColored :: Graph VirtualReg RegClass RealReg raCoalesced :: UniqFM VirtualReg raPatched :: [LiveCmmTop instr] raSpillClean :: [LiveCmmTop instr] raFinal :: [NatCmmTop instr] raSRMs :: (Int, Int, Int) } pprStats :: [RegAllocStats instr] -> Graph VirtualReg RegClass RealReg -> SDoc pprStatsSpills :: [RegAllocStats instr] -> SDoc pprStatsLifetimes :: [RegAllocStats instr] -> SDoc pprStatsConflict :: [RegAllocStats instr] -> SDoc pprStatsLifeConflict :: [RegAllocStats instr] -> Graph VirtualReg RegClass RealReg -> SDoc countSRMs :: Instruction instr => LiveCmmTop instr -> (Int, Int, Int) addSRM :: (Num t, Num t1, Num t2) => (t, t1, t2) -> (t, t1, t2) -> (t, t1, t2)

Documentation

data RegAllocStats instr Source

Constructors RegAllocStatsStart information to help choose which regs to spill raLiveCmm :: [LiveCmmTop instr] initial code, with liveness raGraph :: Graph VirtualReg RegClass RealReg the initial, uncolored graph raSpillCosts :: SpillCostInfo RegAllocStatsSpill code with spill instructions added raGraph :: Graph VirtualReg RegClass RealReg the initial, uncolored graph raCoalesced :: UniqFM VirtualReg the regs that were coaleced raSpillStats :: SpillStats spiller stats raSpillCosts :: SpillCostInfo raSpilled :: [LiveCmmTop instr] RegAllocStatsColored spill/reload/reg-reg moves present in this code raGraph :: Graph VirtualReg RegClass RealReg the initial, uncolored graph raGraphColored :: Graph VirtualReg RegClass RealReg the coalesced and colored graph raCoalesced :: UniqFM VirtualReg the regs that were coaleced raPatched :: [LiveCmmTop instr] code with vregs replaced by hregs raSpillClean :: [LiveCmmTop instr] code with unneeded spill/reloads cleaned out raFinal :: [NatCmmTop instr] final code raSRMs :: (Int, Int, Int) Instances Outputable instr => Outputable (RegAllocStats instr)

pprStats :: [RegAllocStats instr] -> Graph VirtualReg RegClass RealReg -> SDoc Source

Do all the different analysis on this list of RegAllocStats

pprStatsSpills :: [RegAllocStats instr] -> SDoc Source

Dump a table of how many spill loads / stores were inserted for each vreg.

pprStatsLifetimes :: [RegAllocStats instr] -> SDoc Source

Dump a table of how long vregs tend to live for in the initial code.

pprStatsConflict :: [RegAllocStats instr] -> SDoc Source

Dump a table of how many conflicts vregs tend to have in the initial code.

pprStatsLifeConflict Source

:: [RegAllocStats instr] -> Graph VirtualReg RegClass RealReg global register conflict graph -> SDoc For every vreg, dump it's how many conflicts it has and its lifetime good for making a scatter plot.

countSRMs :: Instruction instr => LiveCmmTop instr -> (Int, Int, Int) Source

Count spillreloadreg-reg moves. Lets us see how well the register allocator has done.

addSRM :: (Num t, Num t1, Num t2) => (t, t1, t2) -> (t, t1, t2) -> (t, t1, t2) Source

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