testcases for outloop vectorization support

[Tobias Burnus]

Hi,

Jack Howarth wrote:
> I have been building gcc trunk with Dorit's patches
> for adding outerloop vectorization support.
Thanks to Dorit.

> The current proposed patches apply cleanly to gcc trunk.
> http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00780.html
> http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00781.html
> http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00779.html
> http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00743.html
>   

I got two failures: One with a test case and one with ChangeLog.autovect
which does not exist on the trunk.

> I would think we might be seeing some interesting
> performance improvements in the polyhedron benchmarks
> with these patches applied.
>   
Result on AMD Athlon64 4800+ x86-84 openSUSE Linux Factory with:
gfortran -march=opteron -ffast-math -funroll-loops -ftree-loop-linear
-ftree-vectorize -msse3 -O3

I see mainly noise - or even decrease of the performance.

(w/o patch: average over at 5 to 10 runs without the first run; w/
patch: single run)

Patch:    w/o   w
---------------------
ac       13.89  13.89
aermod   38.46  39.38
air      14.02  14.11
capacita 85.08  85.12
channel  12.70  12.61
dodoc    43.77  43.96
fatigue  12.27  13.03
gas_dyn  12.18  12.02
induct   50.59  49.63
linpk    25.93  25.94
mdbx     24.16  24.17
nf       29.55  29.57
protein  64.99  65.11
rnflow   36.06  36.30
test_fpu 19.43  19.32
tfft      7.83   7.84
---------------------


Tobias