Tim Prince <n8tm@xxxxxxx> writes: > On 6/28/2011 2:04 PM, Dr. David Kirkby wrote: >> I've got some code where the author has used the compiler option -O6. >> What happens in a case like this? gcc does not issue any warnings, but >> as far as I'm aware, such a level of optimisation is not supported. So >> what would happen in a case like this? Would there be any optimiation, >> the maximum possible, the default ...? >> > Easily checked (e.g. by comparing output for -S option). Probably > taken as -O3. Yes, at present -ON where N > 3 is equivalent to -O3. It's possible that in the future some meaning will be assigned to larger values of N, but I'm not aware of any current plans to do so. Ian
