This is the mail archive of the
mailing list for the Java project.
Re: Speed Impact experiment on GCJ
On Thu, 16 Feb 2006 07:23:02 +0000, Andrew Haley wrote:
> Holger Hoffstaette writes:
> > On Wed, 15 Feb 2006 18:22:02 +0000, Andrew Haley wrote:
> > > Holger Hoffstaette writes:
> > > > 1.6 build, because that will make the 1.5 test look slow. :-) The
> > > > one thing where gcj used to have a very clear advantage was
> > > > interface-method invocation since before 1.5 that used to be up to
> > > > 10 (!) times slower than direct method invocations; this was
> > > > reduced to a factor of ~1.8 in 1.5 and completely optimized away
> > > > in Mustang.
> > >
> > > Err, how do they do that, then? Is there a paper somewhere?
> > Sorry, not that I know. I more or less discovered this by accident
> > too..
> Hmm. I wonder if they're devirtualizing interface calls. Can you let me
> see the benchmark?
Sent via email as gmane (which I use for this list) was down. Please post
results for gcc 4.x. :)