On Sun, Dec 23, 2007 at 07:35:20AM -0500, Isaac Dupree wrote:
GHC optimizes less effectively when parts of a program are in different modules, or are exported from a module. Therefore, merging all the code into one "module Main (main)" would help. Unfortunately, Haskell source syntax is ill-suited to this; for example: ... So it's more complicated than it seems on the surface, but it could be done; I only wonder how effective it would be on various programs. I assume GHC doesn't currently implement any optimizations that can _only_ be whole-program, so it would still not be quite like Jhc, though this basic support might allow some such optimizations to be implemented.
It's been done. http://www.cs.utah.edu/~hal/HAllInOne/index.html Stefan