[Haskell-cafe] MD5 performance optimizations

[Don Stewart]

andrewcoppin:
> Don Stewart wrote:
> >Andrew, I hope you look carefully at the suggestions here, and use them
> >to improve the code you were working on.
> >  
> 
> Indeed, this is just the sort of stuff I was hoping to get... [Top marks 
> for spotting the laziness leak in "pad" BTW! I totally missed that.]
> 
> While I'm here, can I just clarify *exactly* what -funbox-strict-fields 
> actually does?

If in doubt, ask the user's guide:

    http://www.haskell.org/ghc/docs/latest/html/users_guide/pragmas.html#unpack-pragma

-- Don