7 Jun
2011
7 Jun
'11
12:12 a.m.
From the #haskell channel, it looks like the horrible speed issue on this code is specific to my system. I'm re-building ghc7 now (bootstrapping ghc7 with ghc7 instead of ghc6), so maybe that will make something happier.
FWIW, rebuilding ghc7 using ghc7 as the bootstrapping implementation (and disabling the ghcquickbuild option, whatever that does) did give me a sane ghc7 that is giving the expected speeds. So, if anybody feels like pointing fingers at anything I could be doing better in my program, that's definitely welcome, but the regression part of my problem is gone.