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GHC Core generated when using foldrWithKey to build up a monadic action to consume a large Map.
Result size of Tidy Core = {terms: 423, types: 423, coercions: 39}
lvl_r2uH :: [GHC.Types.Char]
[GblId, Str=DmdType]
lvl_r2uH = GHC.CString.unpackCString# "Got it!"
Rec {
Main.$sinsert_$s$sgo6 [Occ=LoopBreaker]
:: forall a1_X12s.
GHC.Prim.Int#
-> a1_X12s
-> Data.Map.Base.Map GHC.Types.Int a1_X12s
-> Data.Map.Base.Map GHC.Types.Int a1_X12s
[GblId, Arity=3, Str=DmdType LSS]
Main.$sinsert_$s$sgo6 =
\ (@ a1_X12s)
(sc_s2sY :: GHC.Prim.Int#)
(sc1_s2sZ :: a1_X12s)
(sc2_s2t0 :: Data.Map.Base.Map GHC.Types.Int a1_X12s) ->
case sc1_s2sZ of arg4_a12t { __DEFAULT ->
case sc2_s2t0 of _ {
Data.Map.Base.Bin rb_a12w ky_a12x y_a12y l_a12z r_a12A ->
case ky_a12x of wild1_s2rn { GHC.Types.I# y#_s2rm ->
case GHC.Prim.<# sc_s2sY y#_s2rm of _ {
GHC.Types.False ->
case GHC.Prim.==# sc_s2sY y#_s2rm of _ {
GHC.Types.False ->
Data.Map.Base.balanceR
@ GHC.Types.Int
@ a1_X12s
wild1_s2rn
y_a12y
l_a12z
(Main.$sinsert_$s$sgo6 @ a1_X12s sc_s2sY arg4_a12t r_a12A);
GHC.Types.True ->
Data.Map.Base.Bin
@ GHC.Types.Int
@ a1_X12s
rb_a12w
(GHC.Types.I# sc_s2sY)
arg4_a12t
l_a12z
r_a12A
};
GHC.Types.True ->
Data.Map.Base.balanceL
@ GHC.Types.Int
@ a1_X12s
wild1_s2rn
y_a12y
(Main.$sinsert_$s$sgo6 @ a1_X12s sc_s2sY arg4_a12t l_a12z)
r_a12A
}
};
Data.Map.Base.Tip ->
Data.Map.Base.Bin
@ GHC.Types.Int
@ a1_X12s
1
(GHC.Types.I# sc_s2sY)
arg4_a12t
(Data.Map.Base.Tip @ GHC.Types.Int @ a1_X12s)
(Data.Map.Base.Tip @ GHC.Types.Int @ a1_X12s)
}
}
end Rec }
Main.$sinsert_$sgo6
:: forall a1_a12n.
GHC.Types.Int
-> a1_a12n
-> Data.Map.Base.Map GHC.Types.Int a1_a12n
-> Data.Map.Base.Map GHC.Types.Int a1_a12n
[GblId,
Arity=3,
Str=DmdType S(L)SS,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=3, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=IF_ARGS [20 20 40] 292 120}]
Main.$sinsert_$sgo6 =
\ (@ a1_X12s)
(arg1_a12p :: GHC.Types.Int)
(arg2_a12q :: a1_X12s)
(ds_a12r :: Data.Map.Base.Map GHC.Types.Int a1_X12s) ->
case arg1_a12p of arg3_a12s { GHC.Types.I# ipv_s14m ->
case arg2_a12q of arg4_a12t { __DEFAULT ->
case ds_a12r of _ {
Data.Map.Base.Bin rb_a12w ky_a12x y_a12y l_a12z r_a12A ->
case ky_a12x of wild1_s2rn { GHC.Types.I# y#_s2rm ->
case GHC.Prim.<# ipv_s14m y#_s2rm of _ {
GHC.Types.False ->
case GHC.Prim.==# ipv_s14m y#_s2rm of _ {
GHC.Types.False ->
Data.Map.Base.balanceR
@ GHC.Types.Int
@ a1_X12s
wild1_s2rn
y_a12y
l_a12z
(Main.$sinsert_$s$sgo6 @ a1_X12s ipv_s14m arg4_a12t r_a12A);
GHC.Types.True ->
Data.Map.Base.Bin
@ GHC.Types.Int @ a1_X12s rb_a12w arg3_a12s arg4_a12t l_a12z r_a12A
};
GHC.Types.True ->
Data.Map.Base.balanceL
@ GHC.Types.Int
@ a1_X12s
wild1_s2rn
y_a12y
(Main.$sinsert_$s$sgo6 @ a1_X12s ipv_s14m arg4_a12t l_a12z)
r_a12A
}
};
Data.Map.Base.Tip ->
Data.Map.Base.Bin
@ GHC.Types.Int
@ a1_X12s
1
arg3_a12s
arg4_a12t
(Data.Map.Base.Tip @ GHC.Types.Int @ a1_X12s)
(Data.Map.Base.Tip @ GHC.Types.Int @ a1_X12s)
}
}
}
Main.$sinsert
:: forall a_a12h.
GHC.Types.Int
-> a_a12h
-> Data.Map.Base.Map GHC.Types.Int a_a12h
-> Data.Map.Base.Map GHC.Types.Int a_a12h
[GblId,
Arity=3,
Str=DmdType S(L)SS,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=0, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=ALWAYS_IF(unsat_ok=True,boring_ok=True)}]
Main.$sinsert = Main.$sinsert_$sgo6
Rec {
Main.$sfromList1 [Occ=LoopBreaker]
:: forall a_XVx.
Data.Map.Base.Map GHC.Types.Int a_XVx
-> [(GHC.Types.Int, a_XVx)]
-> Data.Map.Base.Map GHC.Types.Int a_XVx
[GblId, Arity=2, Str=DmdType SS]
Main.$sfromList1 =
\ (@ a_XVx)
(z_aVz :: Data.Map.Base.Map GHC.Types.Int a_XVx)
(ds_aVA :: [(GHC.Types.Int, a_XVx)]) ->
case ds_aVA of _ {
[] -> z_aVz;
: x_aVF xs1_aVG ->
case x_aVF of _ { (k_aVM, x1_aVN) ->
case Main.$sinsert_$sgo6 @ a_XVx k_aVM x1_aVN z_aVz
of z'_aVP { __DEFAULT ->
Main.$sfromList1 @ a_XVx z'_aVP xs1_aVG
}
}
}
end Rec }
Main.$sfromList
:: forall a_aVv.
[(GHC.Types.Int, a_aVv)] -> Data.Map.Base.Map GHC.Types.Int a_aVv
[GblId,
Arity=1,
Str=DmdType S,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=1, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=IF_ARGS [0] 30 0}]
Main.$sfromList =
\ (@ a_XVx) (xs_aVx :: [(GHC.Types.Int, a_XVx)]) ->
Main.$sfromList1
@ a_XVx (Data.Map.Base.Tip @ GHC.Types.Int @ a_XVx) xs_aVx
Rec {
go_r2uI :: GHC.Prim.Int# -> [(GHC.Types.Int, GHC.Types.Int)]
[GblId, Arity=1, Caf=NoCafRefs, Str=DmdType L]
go_r2uI =
\ (x_a14Z :: GHC.Prim.Int#) ->
let {
x1_aWD :: GHC.Types.Int
[LclId, Str=DmdType m]
x1_aWD = GHC.Types.I# x_a14Z } in
GHC.Types.:
@ (GHC.Types.Int, GHC.Types.Int)
(x1_aWD, x1_aWD)
(case x_a14Z of wild_Xq {
__DEFAULT -> go_r2uI (GHC.Prim.+# wild_Xq 1);
1000000 -> GHC.Types.[] @ (GHC.Types.Int, GHC.Types.Int)
})
end Rec }
lvl1_r2uJ :: [(GHC.Types.Int, GHC.Types.Int)]
[GblId]
lvl1_r2uJ = go_r2uI 1
m0_r2uK :: Data.Map.Base.Map GHC.Types.Int GHC.Types.Int
[GblId, Str=DmdType]
m0_r2uK =
Main.$sfromList1
@ GHC.Types.Int
(Data.Map.Base.Tip @ GHC.Types.Int @ GHC.Types.Int)
lvl1_r2uJ
Rec {
go10_r2uL
:: GHC.Types.IO ()
-> Data.Map.Base.Map GHC.Types.Int GHC.Types.Int -> GHC.Types.IO ()
[GblId, Arity=2, Str=DmdType LS]
go10_r2uL =
\ (z'_a10K :: GHC.Types.IO ())
(ds_a10L :: Data.Map.Base.Map GHC.Types.Int GHC.Types.Int) ->
case ds_a10L of _ {
Data.Map.Base.Bin rb_a10O kx_a10P x_a10Q l_a10R r_a10S ->
case kx_a10P of _ { GHC.Types.I# x1_s2rr ->
go10_r2uL
((\ (eta_B1 :: GHC.Prim.State# GHC.Prim.RealWorld) ->
case x1_s2rr of _ {
__DEFAULT ->
((go10_r2uL z'_a10K r_a10S)
`cast` (<GHC.Types.NTCo:IO <()>>
:: GHC.Types.IO ()
~#
(GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))))
eta_B1;
500000 ->
case GHC.IO.Handle.Text.hPutStr2
GHC.IO.Handle.FD.stdout lvl_r2uH GHC.Types.True eta_B1
of _ { (# ipv_a1b3, _ #) ->
((go10_r2uL z'_a10K r_a10S)
`cast` (<GHC.Types.NTCo:IO <()>>
:: GHC.Types.IO ()
~#
(GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))))
ipv_a1b3
}
})
`cast` (Sym <(GHC.Types.NTCo:IO <()>)>
:: (GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))
~#
GHC.Types.IO ()))
l_a10R
};
Data.Map.Base.Tip -> z'_a10K
}
end Rec }
lvl2_r2uM :: GHC.Types.Char
[GblId, Caf=NoCafRefs]
lvl2_r2uM = GHC.Types.C# '\n'
lvl3_r2uN :: [GHC.Types.Char]
[GblId, Caf=NoCafRefs]
lvl3_r2uN =
GHC.Types.:
@ GHC.Types.Char lvl2_r2uM (GHC.Types.[] @ GHC.Types.Char)
lvl4_r2uO
:: GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #)
[GblId, Arity=1, Caf=NoCafRefs]
lvl4_r2uO =
\ (s_X16p :: GHC.Prim.State# GHC.Prim.RealWorld) ->
(# s_X16p, GHC.Tuple.() #)
lvl5_r2uP :: [GHC.Types.Char]
[GblId, Caf=NoCafRefs]
lvl5_r2uP =
GHC.Types.:
@ GHC.Types.Char lvl2_r2uM (GHC.Types.[] @ GHC.Types.Char)
lvl6_r2uQ :: ()
[GblId]
lvl6_r2uQ =
Data.Map.Base.$fNFDataMap_$crnf
@ GHC.Types.Int
@ GHC.Types.Int
(Control.DeepSeq.$fNFDataInt_$crnf
`cast` (Sym <(Control.DeepSeq.NTCo:NFData <GHC.Types.Int>)>
:: (GHC.Types.Int -> ()) ~# Control.DeepSeq.NFData GHC.Types.Int))
(Control.DeepSeq.$fNFDataInt_$crnf
`cast` (Sym <(Control.DeepSeq.NTCo:NFData <GHC.Types.Int>)>
:: (GHC.Types.Int -> ()) ~# Control.DeepSeq.NFData GHC.Types.Int))
m0_r2uK
Main.main1
:: GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #)
[GblId, Arity=1, Str=DmdType L]
Main.main1 =
\ (eta_B1 :: GHC.Prim.State# GHC.Prim.RealWorld) ->
case Data.Time.Clock.POSIX.getPOSIXTime1 eta_B1
of _ { (# ipv_a1hR, ipv1_a1hS #) ->
case GHC.Prim.seq# @ () @ GHC.Prim.RealWorld lvl6_r2uQ ipv_a1hR
of _ { (# ipv2_X1cs, _ #) ->
case Data.Time.Clock.POSIX.getPOSIXTime1 ipv2_X1cs
of _ { (# ipv4_X1jf, ipv5_X1jh #) ->
case {__pkg_ccall_GC base performMajorGC GHC.Prim.State#
GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld #)}_aWW
ipv4_X1jf
of _ { (# ds4_aWZ #) ->
case GHC.Stats.getGCStats1 ds4_aWZ
of _ { (# ipv6_X1cB, ipv7_X1cD #) ->
let {
t0_al2 [Dmd=Just D(TT)] :: Data.Time.Clock.UTC.UTCTime
[LclId, Str=DmdType]
t0_al2 =
case Data.Time.Clock.POSIX.$wposixSecondsToUTCTime ipv1_a1hS
of _ { (# ww1_a2o2, ww2_a2o3 #) ->
Data.Time.Clock.UTC.UTCTime ww1_a2o2 ww2_a2o3
} } in
case GHC.IO.Handle.Text.hPutStr2
GHC.IO.Handle.FD.stdout
(GHC.CString.unpackAppendCString#
"Constructed map in "
(case Data.Time.Clock.POSIX.$wposixSecondsToUTCTime ipv5_X1jh
of _ { (# ww1_a2o2, ww2_a2o3 #) ->
case t0_al2 of _ { Data.Time.Clock.UTC.UTCTime ww3_a2oC ww4_a2oD ->
GHC.Base.++
@ GHC.Types.Char
(Data.Fixed.showFixed
@ Data.Fixed.E12
(Data.Fixed.$fHasResolutionE12_$cresolution
`cast` (Sym <(Data.Fixed.NTCo:HasResolution <Data.Fixed.E12>)>
:: (forall (p_a211 :: * -> *).
p_a211 Data.Fixed.E12 -> GHC.Integer.Type.Integer)
~#
Data.Fixed.HasResolution Data.Fixed.E12))
GHC.Types.True
((GHC.Integer.Type.minusInteger
(Data.Time.Clock.POSIX.$wutcTimeToPOSIXSeconds ww1_a2o2 ww2_a2o3)
(Data.Time.Clock.POSIX.$wutcTimeToPOSIXSeconds ww3_a2oC ww4_a2oD))
`cast` (Sym <(Data.Fixed.NTCo:Fixed <Data.Fixed.E12>)>
:: GHC.Integer.Type.Integer ~# Data.Fixed.Fixed Data.Fixed.E12)))
(GHC.Types.:
@ GHC.Types.Char
Data.Time.Clock.UTC.$fShowNominalDiffTime2
(GHC.CString.unpackAppendCString#
"\
\ "
(GHC.Base.++
@ GHC.Types.Char
(GHC.Stats.$w$cshowsPrec
0 ipv7_X1cD (GHC.Types.[] @ GHC.Types.Char))
lvl5_r2uP)))
}
}))
GHC.Types.True
ipv6_X1cB
of _ { (# ipv8_X1cO, _ #) ->
case ((go10_r2uL
(lvl4_r2uO
`cast` (Sym <(GHC.Types.NTCo:IO <()>)>
:: (GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))
~#
GHC.Types.IO ()))
m0_r2uK)
`cast` (<GHC.Types.NTCo:IO <()>>
:: GHC.Types.IO ()
~#
(GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))))
ipv8_X1cO
of _ { (# ipv10_X1cN, _ #) ->
case Data.Time.Clock.POSIX.getPOSIXTime1 ipv10_X1cN
of _ { (# ipv12_X1jz, ipv13_X1jB #) ->
case {__pkg_ccall_GC base performMajorGC GHC.Prim.State#
GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld #)}_aWW
ipv12_X1jz
of _ { (# ds9_XY1 #) ->
case GHC.Stats.getGCStats1 ds9_XY1
of _ { (# ipv14_X1cV, ipv15_X1cX #) ->
case GHC.IO.Handle.Text.hPutStr2
GHC.IO.Handle.FD.stdout
(GHC.CString.unpackAppendCString#
"Consumed map in "
(case Data.Time.Clock.POSIX.$wposixSecondsToUTCTime ipv13_X1jB
of _ { (# ww1_a2o2, ww2_a2o3 #) ->
case t0_al2 of _ { Data.Time.Clock.UTC.UTCTime ww3_a2oC ww4_a2oD ->
GHC.Base.++
@ GHC.Types.Char
(Data.Fixed.showFixed
@ Data.Fixed.E12
(Data.Fixed.$fHasResolutionE12_$cresolution
`cast` (Sym <(Data.Fixed.NTCo:HasResolution <Data.Fixed.E12>)>
:: (forall (p_a211 :: * -> *).
p_a211 Data.Fixed.E12 -> GHC.Integer.Type.Integer)
~#
Data.Fixed.HasResolution Data.Fixed.E12))
GHC.Types.True
((GHC.Integer.Type.minusInteger
(Data.Time.Clock.POSIX.$wutcTimeToPOSIXSeconds ww1_a2o2 ww2_a2o3)
(Data.Time.Clock.POSIX.$wutcTimeToPOSIXSeconds ww3_a2oC ww4_a2oD))
`cast` (Sym <(Data.Fixed.NTCo:Fixed <Data.Fixed.E12>)>
:: GHC.Integer.Type.Integer ~# Data.Fixed.Fixed Data.Fixed.E12)))
(GHC.Types.:
@ GHC.Types.Char
Data.Time.Clock.UTC.$fShowNominalDiffTime2
(GHC.CString.unpackAppendCString#
"\
\ "
(GHC.Base.++
@ GHC.Types.Char
(GHC.Stats.$w$cshowsPrec
0 ipv15_X1cX (GHC.Types.[] @ GHC.Types.Char))
lvl3_r2uN)))
}
}))
GHC.Types.True
ipv14_X1cV
of _ { (# ipv16_X1d4, _ #) ->
case GHC.IO.Handle.Text.hPutStr2
GHC.IO.Handle.FD.stdout
(GHC.CString.unpackAppendCString#
"Bytes allocated during consume: "
(case ipv15_X1cX
of _
{ GHC.Stats.GCStats rb_a11m
rb1_a11n
rb2_a11o
rb3_a11p
rb4_a11q
rb5_a11r
rb6_a11s
rb7_a11t
rb8_a11u
rb9_a11v
rb10_a11w
rb11_a11x
rb12_a11y
rb13_a11z
rb14_a11A
rb15_a11B
rb16_a11C
rb17_a11D ->
case ipv7_X1cD
of _
{ GHC.Stats.GCStats rb18_X12X
rb19_X12Z
rb20_X131
rb21_X133
rb22_X135
rb23_X137
rb24_X139
rb25_X13b
rb26_X13d
rb27_X13f
rb28_X13h
rb29_X13j
rb30_X13l
rb31_X13n
rb32_X13p
rb33_X13r
rb34_X13t
rb35_X13v ->
GHC.Show.itos
(GHC.Prim.-# rb_a11m rb18_X12X) (GHC.Types.[] @ GHC.Types.Char)
}
}))
GHC.Types.True
ipv16_X1d4
of _ { (# ipv18_X1d3, _ #) ->
(# ipv18_X1d3, GHC.Tuple.() #)
}
}
}
}
}
}
}
}
}
}
}
}
Main.main :: GHC.Types.IO ()
[GblId,
Arity=1,
Str=DmdType L,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=0, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=ALWAYS_IF(unsat_ok=True,boring_ok=True)}]
Main.main =
Main.main1
`cast` (Sym <(GHC.Types.NTCo:IO <()>)>
:: (GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))
~#
GHC.Types.IO ())
Main.main2
:: GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #)
[GblId,
Arity=1,
Str=DmdType L,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=1, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=IF_ARGS [0] 30 0}]
Main.main2 =
\ (eta_Xb :: GHC.Prim.State# GHC.Prim.RealWorld) ->
GHC.TopHandler.runMainIO1
@ ()
(Main.main1
`cast` (Sym <(GHC.Types.NTCo:IO <()>)>
:: (GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))
~#
GHC.Types.IO ()))
eta_Xb
:Main.main :: GHC.Types.IO ()
[GblId,
Arity=1,
Str=DmdType L,
Unf=Unf{Src=<vanilla>, TopLvl=True, Arity=0, Value=True,
ConLike=True, WorkFree=True, Expandable=True,
Guidance=ALWAYS_IF(unsat_ok=True,boring_ok=True)}]
:Main.main =
Main.main2
`cast` (Sym <(GHC.Types.NTCo:IO <()>)>
:: (GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld, () #))
~#
GHC.Types.IO ())
------ Local rules for imported ids --------
"SPEC Data.Map.Strict.insert [GHC.Types.Int]" [ALWAYS]
forall (@ a_a12h) ($dOrd_s14b :: GHC.Classes.Ord GHC.Types.Int).
Data.Map.Strict.insert @ GHC.Types.Int @ a_a12h $dOrd_s14b
= Main.$sinsert @ a_a12h
"SPEC Data.Map.Strict.fromList [GHC.Types.Int]" [ALWAYS]
forall (@ a_aVv) ($dOrd_s14a :: GHC.Classes.Ord GHC.Types.Int).
Data.Map.Strict.fromList @ GHC.Types.Int @ a_aVv $dOrd_s14a
= Main.$sfromList @ a_aVv
"SC:$sgo60" [ALWAYS]
forall (@ a1_X12s)
(sc_s2sY :: GHC.Prim.Int#)
(sc1_s2sZ :: a1_X12s)
(sc2_s2t0 :: Data.Map.Base.Map GHC.Types.Int a1_X12s).
Main.$sinsert_$sgo6 @ a1_X12s
(GHC.Types.I# sc_s2sY)
sc1_s2sZ
sc2_s2t0
= Main.$sinsert_$s$sgo6 @ a1_X12s sc_s2sY sc1_s2sZ sc2_s2t0
import Control.DeepSeq
import GHC.Stats
import qualified Data.Map.Strict as M
import Data.Time.Clock
import Control.Exception
import System.Mem
main :: IO ()
main = do
t0 <- getCurrentTime
let m0 = M.fromList (map (\i -> (i,i)) [1..1000000::Int])
evaluate$ rnf m0
t1 <- getCurrentTime
performGC
s1 <- getGCStats
putStrLn$"Constructed map in "++show (diffUTCTime t1 t0)++"\n "++ show s1++"\n"
let fn 500000 v = putStrLn "Got it!"
fn _ _ = return ()
-- Regular traverseWithKey uses 48MB
-- traverseWithKey_ usse 200K of allocation:
M.traverseWithKey_ fn m0
t2 <- getCurrentTime
performGC
s2 <- getGCStats
putStrLn$"[traverseWithKey_] Consumed map in "++show (diffUTCTime t2 t1)++"\n "++ show s2++"\n"
putStrLn$"Bytes allocated during consume: "++show (bytesAllocated s2 - bytesAllocated s1)
-- foldrWithKey uses 32MB allocation:
M.foldrWithKey (\k a -> (fn k a >>)) (return ()) m0
t3 <- getCurrentTime
performGC
s3 <- getGCStats
putStrLn$"[foldrWithKey] Consumed map in "++show (diffUTCTime t3 t2)++"\n "++ show s3++"\n"
putStrLn$"Bytes allocated during consume: "++show (bytesAllocated s3 - bytesAllocated s2)
return ()
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