Much better version is now in SVN at http://calseum.googlecode.com.
It is generating code for IL compute shader though I am in the process of fixing it to give the option to generate either and to introduce more feature completeness. I am also fixing many more bugs.
Get revision 8 or later from SVN.
To build you will require :
1. Installation of antlr3
2. Installation of antlr3 C runtime.
Both can be downloaded from www.antlr.org
Makefile is provided.