Uros Bizjak <ubizjak at gmail dot com> Mon, 02 Jul 2007 20:29:41 +0200 wrote:
Hello!
It is worth noticing that latest changes to gcc brought more than 75% speed-up
on Polyhedron aermod.f90 benchmark [1]. I can confirm this on 32bit nocona, and
double-checked on 64bit core2:
gcc -O3 -funroll-loops -ftree-vectorize -ffast-math:
(GCC) 4.3.0 20070622 : 0m33.530s
(GCC) 4.3.0 20070702 : 0m11.805s
[1]:
http://www.suse.de/~gcctest/c++bench/polyhedron/polyhedron-summary.txt-2-0.html
Uros.
Please, to add the option -S and -fdump-tree-gimple to the script,
and paste the ".s" and ".gimple" files to see the differences since
the real or abstract machine.
Bye xuxi
