Safe Haskell	None
Language	Haskell98

RegAlloc.Graph.Stats

Description

Carries interesting info for debugging / profiling of the graph coloring register allocator.

Synopsis

Documentation

data RegAllocStats statics instr Source

Holds interesting statistics from the register allocator.

Constructors

RegAllocStatsStart
Fields raLiveCmm :: [LiveCmmDecl statics instr] Initial code, with liveness. raGraph :: Graph VirtualReg RegClass RealReg Uncolored graph. Partially colored graph. The initial, uncolored graph. raSpillCosts :: SpillCostInfo Number of instructions each reg lives for. Information to help choose which regs to spill.
RegAllocStatsSpill
Fields raCode :: [LiveCmmDecl statics instr] Code we tried to allocate registers for. Code we tried to allocate registers for. raGraph :: Graph VirtualReg RegClass RealReg Uncolored graph. Partially colored graph. The initial, uncolored graph. raCoalesced :: UniqFM VirtualReg Regs that were coaleced. The regs that were coaleced. raSpillStats :: SpillStats Spiller stats. raSpillCosts :: SpillCostInfo Number of instructions each reg lives for. Information to help choose which regs to spill. raSpilled :: [LiveCmmDecl statics instr] Code with spill instructions added.
RegAllocStatsColored
Fields raCode :: [LiveCmmDecl statics instr] Code we tried to allocate registers for. Code we tried to allocate registers for. raGraph :: Graph VirtualReg RegClass RealReg Uncolored graph. Partially colored graph. The initial, uncolored graph. raGraphColored :: Graph VirtualReg RegClass RealReg Coalesced and colored graph. raCoalesced :: UniqFM VirtualReg Regs that were coaleced. The regs that were coaleced. raCodeCoalesced :: [LiveCmmDecl statics instr] Code with coalescings applied. raPatched :: [LiveCmmDecl statics instr] Code with vregs replaced by hregs. raSpillClean :: [LiveCmmDecl statics instr] Code with unneeded spill/reloads cleaned out. raFinal :: [NatCmmDecl statics instr] Final code. raSRMs :: (Int, Int, Int) Spill/reload/reg-reg moves present in this code.

Instances

(Outputable statics, Outputable instr) => Outputable (RegAllocStats statics instr)

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

Do all the different analysis on this list of RegAllocStats

pprStatsSpills :: [RegAllocStats statics instr] -> SDoc Source

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

pprStatsLifetimes :: [RegAllocStats statics instr] -> SDoc Source

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

pprStatsConflict :: [RegAllocStats statics instr] -> SDoc Source

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

pprStatsLifeConflict Source

Arguments

:: [RegAllocStats statics 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 => LiveCmmDecl statics instr -> (Int, Int, Int) Source

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

addSRM :: (Int, Int, Int) -> (Int, Int, Int) -> (Int, Int, Int) Source