Will tree-ssa be GCC 3.5?

[Joe Buck]

On Mon, Dec 01, 2003 at 10:15:12AM -0500, Richard Kenner wrote:
> The question of to what extent optimizations will be improved by doing
> them at a higher level is one that can only be answered by doing them.
> Likewise for the cost of such optimizations.

Ten years of experience suggests that certain optimizations needed for
decent C++ performance will never be done in the current GCC framework.
tree-ssa is pretty much the only hope.

And C++ is only one example, any language with record types will have
similar issues.

> There has been a lot of speculation, but nobody can say with certainty
> whether or to what extent any of the current RTL optimizers can be removed
> without losing significant code performance, for another example.

That's a separate question and I agree that the answer is not known.
However, tree-ssa does not require the removal of the RTL optimizers.