9 May
2010
9 May
'10
5:40 a.m.
Hello Duncan, Sunday, May 9, 2010, 1:50:31 AM, you wrote:
It should be -O1 for default/balanced optimisations and -O2 for things involving a bigger tradeoff in terms of code size or compile time. so
cloning gcc policy may be a good choice. -O2 is the best optimization that "guaranteed" to make program faster and -O3 is for speculative optimization (those that may be breaked by unusual code or made program slower). not sure about -O1, may be difference is that -O1 or just -O is "development-time" optimization, i.e. quick&dirty and -O2 generates production code -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com