On 12/1/06, Uros Bizjak <[EMAIL PROTECTED]> wrote:
Hello!
At least on x86_64 and i686 SPEC score [1] and polyhedron [2] scores
dropped noticeably. For SPEC benchmarks, mgrid, galgel, ammp and
sixtrack tests are affected and for polygedron, ac (second regression
in the peak) and protein (?) regressed in that time frame.
[1] http://www.suse.de/~aj/SPEC/amd64/CFP/summary-britten/recent.html
[2]
http://www.suse.de/~gcctest/c++bench/polyhedron/polyhedron-summary.txt-2-0.html
Does anybody have any idea what is going on there?
It correlates with the PPRE introduction (enabled at -O3 only) which might
increase register pressure, but also improves Polyhedron rnflow a lot.
Richard.
