[Bug target/32086] [4.3 Regression] 10% to 20% Performance Regression Between 4.1.3 and 4.3

[ubizjak at gmail dot com]

------- Comment #1 from ubizjak at gmail dot com  2007-11-29 08:09 -------
(In reply to comment #0)

> b) gfortran -m32 -march=opteron -ffast-math -funroll-loops -ftree-vectorize
> -ftree-loop-linear -O3
> 
> induct.f90: 61.41 [100%] vs 46.94 [ 76%]
> test2.f90:   5.45 [100%] vs  4.54 [ 83%]

I have run the test compiled with above options, with and without
-fvect-cost-model, but on Xeon 3.2G in 32bit mode:

w/o -fvect-cost-model:

user    1m40.906s

w/ -fvect-cost-model:

user    0m46.439s


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32086