[RFC] [parloop branch] Supporting reductions, take 2

[Zdenek Dvorak]

Hello,

> > > I'm not sure this code (replacing full gimplification of omp atomic 
> with 
> > > omp 
> > > atomic expansion) is stable enough, and it also needs to be adapted to 
> 
> > > mainline
> > > with the rest of my code, so I'm not sure I'll get it ready in time to 
> be 
> > > submitted
> > > before September 10th.
> > > 
> > > Zdenek, would you say that targeting to get only the reduction code to 
> 
> > > mainline
> > > (and having a simple omp_expamd_atomic relying on the 
> force_gimple_opeand 
> > > to produce 
> > > code) is good enough?
> > 
> > I think it is not worth hurrying; regardless of whether the
> > autoparallelization in 4.3 will support reduction or not, it will not be
> > practically useful.  So I would prefer to leave the improvements for the
> > next version, and use the time to test and tune them.
> 
> So, having the reduction code with a very simple expand_omp_atomic will do
> for gcc4.3?

not really -- I think it does not make sense to hurry and commit
half-finished work.

Zdenek