ghc-6.10.1: The GHC API Contents Index

RegAllocStats

Synopsis

data RegAllocStats = RegAllocStatsStart { raLiveCmm :: [LiveCmmTop] raGraph :: Graph Reg RegClass Reg raSpillCosts :: SpillCostInfo } | RegAllocStatsSpill { raGraph :: Graph Reg RegClass Reg raCoalesced :: UniqFM Reg raSpillStats :: SpillStats raSpillCosts :: SpillCostInfo raSpilled :: [LiveCmmTop] } | RegAllocStatsColored { raGraph :: Graph Reg RegClass Reg raGraphColored :: Graph Reg RegClass Reg raCoalesced :: UniqFM Reg raPatched :: [LiveCmmTop] raSpillClean :: [LiveCmmTop] raFinal :: [NatCmmTop] raSRMs :: (Int, Int, Int) } regDotColor :: Reg -> SDoc pprStats :: [RegAllocStats] -> Graph Reg RegClass Reg -> SDoc pprStatsSpills :: [RegAllocStats] -> SDoc pprStatsLifetimes :: [RegAllocStats] -> SDoc pprStatsConflict :: [RegAllocStats] -> SDoc pprStatsLifeConflict :: [RegAllocStats] -> Graph Reg RegClass Reg -> SDoc countSRMs :: LiveCmmTop -> (Int, Int, Int)

Documentation

data RegAllocStats

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

regDotColor :: Reg -> SDoc

pprStats :: [RegAllocStats] -> Graph Reg RegClass Reg -> SDoc

Do all the different analysis on this list of RegAllocStats

pprStatsSpills :: [RegAllocStats] -> SDoc

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

pprStatsLifetimes :: [RegAllocStats] -> SDoc

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

pprStatsConflict :: [RegAllocStats] -> SDoc

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

pprStatsLifeConflict

:: [RegAllocStats] -> Graph Reg RegClass Reg 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 :: LiveCmmTop -> (Int, Int, Int)

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

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