> WCode is not published. MI is.

Actually, if you approach IBM with the intention of porting, say FORTRAN, a 
compiler to the iSeries and with some money to show your commitment, it's my 
understanding that you get to see the w-code docs. Not fully publicly published 
granted, but it's definitely not a super secret.

Plus if you ask the right people nicely, you can sometimes get explanations on 
sections of w-code.

> If an alternative, non ile process is allowed
> on the iSeries, wcode is not needed and I would be very suprised
> if the resulting code was not fully optimizable.

But why bother ? The w-code spat out from the ILE/C compiler front-end is very 
opimizable, and in most cases will provide a tighter PPC instruction stream 
(after the back-end has optimised it) than the MI compiler/optimiser for 
similar code.

--phil


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