I just updated icedtea6 hg with the latest Shark. The main reason for this release is that Andrew Haley pointed out that the marked-method stuff I was using to differentiate compiled methods and interpreted methods didn’t work on amd64, and while it was possible to make it work there I didn’t like the idea of having something that needs tweaking for each new platform you build on. Now interpreted methods have the same calling convention as compiled ones, which makes the need for differentiation obsolete.
Other new features in this release include support for long, float, and double values, and a massive pile of new bytecodes. Check out the coverage page now, it’s awesome!