Re: Optimizing Compiler for the ICFP 09 contest's VM

> The byte code for the virtual machine of this years ICFP specified a
> language with single assignment per simulation step.  Interestingly
> most memory locations get overwritten each simulation step before they
> are read.  That means, those locations don't have to be remember
> between steps.  Also locations that never get overwritten (e.g.
> location associated with Noops), are constant.  Thus the variables
> state of the simulation is orders of magnitude smaller than the naive
> 2^16 * 32 bit + 1 bit.
>
> I wrote a small program that analyses the dataflow of a byte code
> program (and initial memory setup) for the VM.  After analyzing my
> program emits Haskell code to run the given byte code.
>
> If anyboby is interested, I can document my program and put it online
> somewhere.  I also made pretty graphs of the dataflow with graphviz.