[Haskell-cafe] compressed pointers?

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#wp107976... Something for GHC? -k -- If I haven't seen further, it is by standing in the footprints of giants