On Sun, 18 Apr 2010, Andy Lester wrote:
> Begin forwarded message:
> > GCC 4.5.0 is now capable of "link-time optimization". Traditionally,
> > most C and C++ compilers (including GCC) have only been able to
> > optimize within a single source file or "module". GCC was therefore
> > unable to take advantage of optimization opportunities that required
> > knowledge about multiple modules. This limitation has been removed in
> > GCC 4.5.0. This optimization can provide significant increases in
> > performance and equally significant reductions in code size.
Sun CC has been able to do this for some time (with the -xipo option)
though extra tweaks are needed to the build process because -xpio doesn't
work with the shared libparrot.so that parrot likes to build. I have,
from time to time, fiddled with this option on both Perl 5 and Parrot, but
it usually hasn't made much of a difference. I will be curious to see if
GCC does any better.
--
Andy Dougherty [email protected]
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