[Bug target/38306] [4.4/4.5/4.6 Regression] 15% slowdown w.r.t. 4.3 of computational kernel on some architectures

[Joost.VandeVondele at pci dot uzh.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38306

--- Comment #20 from Joost VandeVondele <Joost.VandeVondele at pci dot uzh.ch> 
2011-02-20 16:28:00 UTC ---
additionally for trunk, lto/profile-use seem not to help:

> gfortran -O3 -march=native -funroll-loops  -ffast-math  -flto -fprofile-use 
> test.f90 ; ./a.out 
Time for evaluation [s]:                        4.664

> gfortran -O3 -march=native -funroll-loops  -ffast-math   -fprofile-use 
> test.f90 ; ./a.out 
Time for evaluation [s]:                        4.665