Hi all, I am implementing a generator of optimization sequences for GCC 4.8.4. The Generator use an evolutionary algorithm to evolve a list of optimization sequences like acovea (http://hg.ahs3.net/acovea/debian/html/acoveaga.html) The list of optimizations I have to chosen to evolve are the flags that can be turned on or off in each of the standard GCC levels 01 to O3 and Ofast (around 78 flags). I ve read that "most optimizations are only enabled if an -O level is set on the command line. Otherwise they are disabled, even if individual optimization flags are specified" So if I have a list of generated sequences, How can I add default optimizations? O1 + <generated_sequence_1> == O2 + <generated_sequence_1> == O3 + <generated_sequence_1> ??? If not, how can I tell GCC to run default optimizations in addition to my generated flags. NB: In acovea, they said "Each initial population is a set of randomly-selected acovea_organisms. I also "seed" each population with predefined organisms that represent the "composite" optimization options -O1, -O2, -O3, and -Os. That way, I ensure that the default settings get a chance to compete with random option sets" How did they define the "composite" optimization options ? Thank you in advance. -- View this message in context: http://gcc.1065356.n5.nabble.com/Question-about-default-optimizations-tp1208211.html Sent from the gcc - Help mailing list archive at Nabble.com.
