Re: Compiler performance tests on FreeBSD 10.0-CURRENT

On Tue, Sep 04, 2012 at 11:59:39PM +0200, Dimitry Andric wrote:
> On 2012-09-04 23:43, Steve Kargl wrote:
> >On Tue, Sep 04, 2012 at 10:39:40PM +0200, Dimitry Andric wrote:
> >>I recently performed a series of compiler performance tests on FreeBSD
> >>10.0-CURRENT, particularly comparing gcc 4.2.1 and gcc 4.7.1 against
> >>clang 3.1 and clang 3.2.
> ...
> >The benchmark is somewhat meaningless if one does not
> >know the options that were used during the testing.
> 
> If you meant the compilation options, those were simply the FreeBSD
> defaults for all tested programs, e.g. "-O2 -pipe", except for boost,
> which uses "-ftemplate-depth-128 -O3 -finline-functions".  I will add
> some explicit notes about them.

Yes, I meant the options specified on the compiler command line.
'gcc -O0 -pipe' compiles code faster than 'gcc -O3 -save-temps',
and the former uses much less memory.

-- 
Steve
_______________________________________________
freebsd-current@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"