Polyhedron performance regression

[FX Coudert]

> Just wanted to note to the list that Tobias spotted a performance  
> regression on Polyhedron ac.
>
> http://www.suse.de/~gcctest/c++bench/polyhedron/polyhedron- 
> summary.txt-2-0.html

Hum, the performance change on ac is significant. Anyway we can get  
the revision numbers before and after the jump? (and before the last  
jump to zero)? What patches have been commited in that time that  
could affect this? I can't see anything on the fortran patches...

FX