We have a fairly simple test case that crashes C2 in jdk7u: http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1710
It is fixed in HS25. I just built jdk7u60 and can confirm that it crashes that too. I've looked at the HotSpot logs, and it appears that the register allocator was reorganized shortly after the HS25 split. It looks like this chunk of HotSpot has been substantially rewritten. So, the question is this: should we update HotSpot in jdk7u? Or is that too much of a risk? Andrew.
