bbr: > Simon Peyton-Jones wrote: > > > GHC does a lot of cross-module inlining already, and *does* write stuff > > into interface files, provided you use -O. > > I used -O4. Is that the bad thing?
There's nothing about -O2 However, I think that's ok -- it clamps -ON | N>2 to -O2 > > I'm always interested in performance differences of a factor of 15 though! > > Can you supply an example (as small as poss) for us to look at? > > Yes certainly, although small will be a big problem, I guess. > I admit that the factor 15 is a bit dubious since the fast run-time was > so small (1.88 sec vs. 0.112 sec). > > I will see what I can do on the morrow. I'd be interested in any progress here -- we noticed issues with optimisations in the stream fusion package across module boundaries that we never tracked down. If there's some key things not firing, that would be good to know. _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
