ketil: > > One of the downsides of a 64-bit environment is the increased size of > pointers. This means that the cost of a String increases from > something like 12 bytes per char to something like 24. > > I notice BEA uses something called "compressed pointers" to get the > 64-bit (more registers, etc) benefits without paying the > (cache-thrashing) cost. > > > http://e-docs.bea.com/jrockit/releases/5026x/relnotes/relnotes.html#wp1079760 > > Something for GHC? >
One small upside (performance wise), is that the bottom 3 bits of the pointer are now used to encode the constructor on 64 bits, so 'case' gets a good percent cheaper. -- Don _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
