Re: [Haskell-cafe] Fusion for fun and profi (Was: newbie optimization question)

28 Oct 2007


      On Sun, Oct 28, 2007 at 01:43:07PM -0700, Don Stewart wrote:
...
stefanor:
...
IO blocks unboxing in GHC.  How fast is your mock-C code refactored to
do IO outside of the loops only?
It doesn't! The above code yields:
Main.$wloop :: GHC.Prim.Int#
                   -> GHC.Prim.State# GHC.Prim.RealWorld
                   -> (# GHC.Prim.State# GHC.Prim.RealWorld, () #)
$wgo_rMK :: GHC.Prim.Int# -> GHC.Prim.Int# -> GHC.Prim.Int# -> GHC.Prim.Int#
        where
            $s$wgo_rMI :: GHC.Prim.Int# -> GHC.Prim.Int# -> GHC.Prim.Int#
Ah, interesting.  I was reading something too general from
http://hackage.haskell.org/trac/ghc/ticket/1592#comment:5.

Stefan

Re: [Haskell-cafe] Fusion for fun and profi (Was: newbie optimization question)

Stefan O'Rear