Re: dataflow branch merging plans.

[Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>]

> Still, 6% compile time regression on several targets and typically a
> (very small) regression in SPEC scores - am I the only one who's not
> impressed?

I must say, I am not either despite the (not so big, but relevant) work 
I put in the branch.  I'm not sure whether this includes or not the 
dataflow checking code; this is way too expensive and it should be 
relocated to a separate --enable-checking=df option when we're closer to 
the release.

(Actually, I was supposed to do it in April, but I was swamped and -- 
anyway -- yesterday's spu bug convinced me that it is better to leave it 
in for a while).

One important thing is that this is also an enabling work for other 
improvements.  I remember Kenny had prespilling, but it didn't work 
because of the wrong liveness computation (it worked right on 
df-branch instead).	

> Finally, since a plan to merge next week was indicated - which
> maintainer has approved it?

I think the message was also meant to find a maintainer approving it.

Paolo