It turns out i forgot to do the new iv creation/computation in the same 
type of the old iv.
This fixes that, and adds the missing compute_immediate_uses.

ltrans-2 still fails to decide it wants to interchange, but the rest 
succesfully pass.

Bootstrapped and regtested on powerpc-darwin.

2004-10-12  Daniel Belin  <dberlin@dberlin.org>

        * lambda-code.c (gcc_loopnest_to_lambda_loopnest):
	   Print out message to dump_file when we convert to perfect nest.
        (lbv_to_gcc_expression): Add type argument, and use it for
        type of arithmetic.
        (lle_to_gcc_expression): Ditto.
        (lambda_loopnest_to_gcc_loopnest): Pass type of old induction
        variable to lbv/lle_to_gcc_expression.
        * tree-loop-linear.c (linear_transform_loops): Compute immediate 
uses.
        Print out message when we transform loops.