Re: When is stage 1 scheduled to close for 3.4?

[Steven Bosscher <s dot bosscher at student dot tudelft dot nl>]

Op do 01-05-2003, om 03:41 schreef Diego Novillo:
> The work being done on the tree-ssa branch is reaching a state in
> which we could start thinking about a merge.  We're nearly done
> with basic infrastructure work.  We are now starting to look at
> performance tuning.
> 
> Depending on what the schedule looks like, it may make sense for
> us to try merging the branch into mainline in time for 3.4.

That would be really cool, if feasable.  A few questions:

The SPEC scores so far don't show much runtime performance improvements
and compile time is still worse, too (I have also seen compiler
performance PRs that are fixed in tree-ssa because of GIMPLE, but...)
Do you have some target numbers for tree-ssa compile time performance
and memory usage when all infrastructure work is finished (ie. un-SSA
and copyprop working), and how much improvement do you expect from
performance tuning.
Any idea if it's possible to turn off one or two RTL optimizers ;-)?

And wouldn't it be better to merge tree-ssa after the new register
allocator is finished?

Greetz
Steven