[Cbc] Options with latest Cbc/trunk

[John J Forrest]

There are various things people can play with too see if the performance is
improved in latest trunk.

The code should be a bit faster with the following defined -

ADD_CXXFLAGS="-DCLP_FAST_CODE -DCOIN_FAST_CODE -DCOIN_USE_RESTRICT

I have been also adding these (obviously the architecture one is computer dependant)

-funsafe-loop-optimizations -Wunsafe-loop-optimizations -ffast-math -fno-math-errno\
 -funsafe-math-optimizations -fno-trapping-math -march=prescott"

Finally in the standalone version there is an experiment option

so

cbc xxxxxx.mps -experiment 1 -solve

switches on various options.  There is a line of output which says what underlying options are switched on.

Any feedback is welcome - if in favor to the mailing list, if unfavorable just to me :-)

John Forrest