I'm curious if it was the pre/fre changes. can you try -fno-tree-pre and -fno-tree-fre and see if it slows down again?
On 7/2/07, Uros Bizjak <[EMAIL PROTECTED]> 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.
