Read the middle-end array expression paper by Richard Guenther !

[Toon Moene]

Richard has held a very interesting talk at the GCC Summit this year 
about moving all array expression handling into the middle end.

This has two, immediately obvious, consequences:

1. It enables other front ends than the Fortran one to translate array
    syntax easily (the Ada people were *very* interested in this).

2. It would make the Fortran front end much simpler.

Richard is currently waiting for the GIMPLE tuples to be implemented to 
finish his middle end updates to deal with "array (section) registers".

His paper is at: http://www.suse.de/~rguenther/guenther.pdf

Hope this is useful,

-- 
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
At home: http://moene.indiv.nluug.nl/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/ml/gcc/2008-01/msg00009.html