2009/4/14 Frank Mehnert <[email protected]>: > On Tuesday 14 April 2009, Riaan Kok wrote: >> In a Virtualbox Linux guest, is it safe to use "-march=native" with >> recent GCC when /proc/cpinfo shows a Core2Duo CPU? > > I'm not completely sure. AFAIR, at least SSSE3 is not yet supported > by VBox. Of course the kernel will detect this but I'm not sure how > the detection in gcc works so I would better not recommed to do > that. I don't think you will gain much benefit.
Just for the record, I decided to try it anyway. The wonderful world of backups etc. I can report that my Gentoo VM recompiles itself just fine with "-march=native" and GCC 4.3.2 (Core2 Duo OS X Leopard host), and the OS has been without glitch for several days now. Disclaimer: I have not knowingly used programs yet which might actually try to use SSE3. Just let me know if I can test anything here, or if you want more info. my regards, Riaan _______________________________________________ vbox-users mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-users
