[tree-ssa] RFC: Making control flow more explicit

[Andrew MacLeod]

On Fri, 2003-08-08 at 21:08, Daniel Berlin wrote:

> 
> It appears you broke walk_tree on GIMPLE'd trees.
> Points-to uses it.
> If you'd really like me to switch it to use tsi's, i will, but it was 
> written before tsi's existed.
> :)

In all likelyhood, It will eventually need to be changed. We probably
wont be using CE nodes in the front end for ever.  Famous last words, I
know :-) Thats primarily why we provided TSI's.

Any exercise which removes references to CE nodes in our optimizer code
is a useful exercise. In fact, before going on vacation I was
considering going through that exact exercise of at least locating them
over the next week or two :-)

Andrew