Will tree-ssa be GCC 3.5?

[Richard Kenner]

    <grin> but only after duplicating about 20% of the tree-ssa work
    (i.e. all function lowering, inlining and part of expansion), and the
    generated code would be so horrible that no sane Fortran user would
    dare touch it ;-) 

Yes of course you might need to use some of the lowering code written
for tree-ssa to lower into older-style trees, but I don't see that as
significant.  And I don't understand your last comment: unlike C++,
the important optimizations for Fortran are relatively low-level and
will benefit less from tree-ssa than other languages.