#12357: Increasing maximum constraint tuple size significantly blows up compiler allocations -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Here are the same results from comment:5 but shown in terms of absolute change. All allocations given in these tables are in bytes. ||= Change =||= alloc A =||= alloc B =||= name =|| || +7420720.0 || 4477200 || 11897920 || $wa5 (ghc-7.11.20150614:Encoding) || || +1869440.0 || 10348960 || 12218400 || $cgetUnique (ghc-7.11.20150614:Unique) || || +1538976.0 || 499856 || 2038832 || $wa3 (ghc-7.11.20150614:Encoding.) || || +998016.0 || 6526672 || 7524688 || (ghc-7.11.20150614:FastTypes.iBox) || || +810336.0 || 4372400 || 5182736 || (ghc-7.11.20150614:FastString.uniqueOfFS) || || +746304.0 || 3274992 || 4021296 || $ccompare1 (ghc-7.11.20150614:Module) || || +458528.0 || 5368328 || 5826856 || a11 (ghc-7.11.20150614:IOEnv) || || +375360.0 || 2830992 || 3206352 || $ccompare (ghc-7.11.20150614:Module) || || +277104.0 || 1640736 || 1917840 || (ghc-7.11.20150614:Unique.mkUnique) || || +276184.0 || 22040 || 298224 || (ghc-7.11.20150614:OccName.mkSuperDictSelOcc) || || +255936.0 || 320 || 256256 || sat_sjxb (ghc-7.11.20150614:TcRnMonad) || || +244352.0 || 58488 || 302840 || ds1 (ghc-7.11.20150614:LoadIface) || || +218960.0 || 905968 || 1124928 || (ghc-7.11.20150614:TysWiredIn.isBuiltInOcc_maybe) || || +172040.0 || 337216 || 509256 || (ghc-7.11.20150614:IfaceEnv.lookupOrig) || || +156400.0 || 672640 || 829040 || sat_s29U (ghc-7.11.20150614:UniqSupply) || || +152720.0 || 350440 || 503160 || (ghc-7.11.20150614:FastString.unpackFS) || || +146832.0 || 2029744 || 2176576 || (ghc-7.11.20150614:Binary.getByte1) || || +145360.0 || 1439680 || 1585040 || $wa1 (ghc-7.11.20150614:BinIface.) || || +142232.0 || 605144 || 747376 || $wa (ghc-7.11.20150614:FastString.) || || +137448.0 || 302448 || 439896 || (ghc-7.11.20150614:UniqSupply.takeUniqFromSupply) || || +131928.0 || 259992 || 391920 || $wa86 (ghc-7.11.20150614:Binary) || || +125120.0 || 1819648 || 1944768 || (ghc-7.11.20150614:UniqFM.lookupUFM) || || +125120.0 || 640832 || 765952 || a17 (ghc-7.11.20150614:UniqFM) || || +112056.0 || 765296 || 877352 || a10 (ghc-7.11.20150614:IOEnv) || || +109480.0 || 245336 || 354816 || (ghc-7.11.20150614:Name.mkExternalName) || || +106904.0 || 224336 || 331240 || (ghc-7.11.20150614:IfaceEnv.extendNameCache) || || +89424.0 || 318552 || 407976 || (ghc-7.11.20150614:Unique.mkVarOccUnique) || || +87952.0 || 1069664 || 1157616 || $wa3 (ghc-7.11.20150614:Binary.) || || +78200.0 || 283320 || 361520 || (ghc-7.11.20150614:FastString.mkFastStringByteString3) || || +74520.0 || 2068360 || 2142880 || $cget5 (ghc-7.11.20150614:IfaceType) || || +72680.0 || 1294840 || 1367520 || $cget4 (ghc-7.11.20150614:IfaceType) || || +72680.0 || 748080 || 820760 || $cget2 (ghc-7.11.20150614:IfaceType) || || +72680.0 || 787960 || 860640 || $cget1 (ghc-7.11.20150614:IfaceType) || || +63296.0 || 827536 || 890832 || (ghc-7.11.20150614:Unique.mkUniqueGrimily) || || +62560.0 || 269056 || 331616 || sat_s29W (ghc-7.11.20150614:UniqSupply) || || +62560.0 || 269056 || 331616 || sat_s29V (ghc-7.11.20150614:UniqSupply) || || +61088.0 || 143104 || 204192 || $wa2 (ghc-7.11.20150614:Encoding.) || || +49128.0 || 352488 || 401616 || (ghc-7.11.20150614:Name.nameUnique) || -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12357#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler