[Haskell-cafe] Announce: ghc-core, command line pager for reading GHC Core

Don Stewart dons at galois.com
Fri May 23 16:19:42 EDT 2008

> Hello Duncan,
> Friday, May 23, 2008, 11:55:57 PM, you wrote:
> >> > me too. btw, this already present in jhc. inlining doesn't work in any
> >> > complex case since recursive functions can't be inlined
> >> 
> >> GHC inlines recursive functions, too, otherwise it could not turn 'foldl' 
> >> and friends into plain machine loops.
> > As I understand it, if foldl was written in the standard directly way
> > then ghc would not inline it
> well, i'm not a True GHC Hacker ;)  but i was bitten by this problem
> in 6.4. i had a lot of SPECIALIZE pragmas in Streams library exactly
> because INLINE doesn't help. actually, it even does things worser by
> disabling some other form of optimization, i don't remember which one

It would be good to try this with 6.8 -- there have been some huge 
improvements to the strictness analyser and inliner in the last 2 years.

Could you dig up some examples?

-- Don

More information about the Glasgow-haskell-users mailing list