On Tue, Mar 20, 2007 at 08:56:10AM -0400, Kaveh R. GHAZI wrote:
> We've been considering two solutions, the 9 bit codes vs the subcode
> alternative.
>
> The 9 bit solution is considered simpler and without any memory penalty
> but slows down the compiler and doesn't increase the number of codes very
> much. The subcodes solution increases memory usage (and possibly also
> slows down the compiler) and is more complex and changes are more
> pervasive.
But the subcodes approach would be only applied to the less often used
codes and ideally within the frontends only. So the memory hit shouldn't be
as big as e.g. going to 16 bit tree codes if that means increasing the size
of most of the trees the compiler uses.
Jakub
