RFR: Make Zero build and run with JDK8

[Roman Kennke]

Am Donnerstag, den 11.10.2012, 11:00 -0700 schrieb Christian Thalinger:
> On Oct 11, 2012, at 7:55 AM, Roman Kennke <rkennke at redhat.com> wrote:
> 
> > Hello,
> > 
> > In the recent weeks I worked on the Zero interpreter, to get it to build
> > and run with JDK8, and in particular with the latest changes that came
> > from mlvm (meth-lazy). The following webrev applies to hsx/hotspot-main:
> > 
> > http://cr.openjdk.java.net/~rkennke/zerojdk8/webrev.00/
> > 
> > A few notes on the patch:
> > - Some makefile changes have been necessary to get it to build at all.
> > - A bunch of stub functions needed to be added to make the compiler
> > happy, they should not be called though.
> > - Most of the changes are related to JSR292 stuff, in particular the
> > added invokehandle handler, and the changes to invokedynamic resulting
> > from how the constant pool entry has changed (e.g. method is now in f1).
> > - A lot of code relating to JSR292 could be removed because most of the
> > logic has been moved to the (Java) lambda forms.
> > - A few native methods have been added (MH.invokeBasic(),
> > MH.linkToVirtual(), MH.linkToStatic() MH.linkToSpecial()).
> > 
> > With those changes it's possible to build the Zero-JDK with itself, and
> > run the JSR292 related jtreg testcases. I did not (yet) attempt to run a
> > TCK or such, this would have to wait until all this gets backported to
> > JDK7 anyway, and I wanted to get some feedback on the changes first.
> 
> You may want to run something like JRuby as well.

Woa, woa, I never touched this before :-) Is there any particular
program that I should try, that is known to exercise jsr292, or does a
simple helloworld suffice?

Roman