On 27 Sep 2010, at 17:48, Martin Spott wrote: >> >> The SSE math flags are a no-brainer where supported - the >> -march-native and -sse flags are all Apple defaults in Xcode. > > BTW, as far as I remember the -sse and -sse2 are on by default for GCC > on AMD64 (alias x86_64).
It would be good if someone who found -O3 -march=native -sse -sse3 made a difference, ciuld verify this, i.e try without the explicit SSE flags, and see if the performance is the same. march=native might be they key thing here, if the default arch is i386 or i686, and hence prohibiting SSE from being considered. James ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
