Re: gcc optimisation flags for Intel Atom

[xunxun <xunxun1982@xxxxxxxxx>]

于 2012/6/26 10:56, Michael Zintakis 写道:
> I am reading some very different (and sometimes conflicting) opinions 
> what these optimisation flags should be. So, what are the best flags 
> to use to compile source code for running on Atom?
>
> Personally, I think using "-O2 -march=atom -msssse3 -mfpmath=sse 
> -fomit-frame-pointer -pipe" is decent enough. Any other opinions? I am 
> using gcc 4.4.5.
-msssse3 -> -mssse3

As I know, -mfpmath=sse may slow some code speed in some architechures, 
but I don't know if it also is on ATOM.

--
Best Regards,
xunxun