[10] RFR(M): 8176506: C2: loop unswitching and unsafe accesses cause crash

[Roland Westrelin]

Hi Volker,

Thanks for reviewing this again.

> I think it's good that you now use SIGILL on all platforms. The change
> looks good except the following minor nits I've already mentioned in
> my first review. I'll leave it up to you if you want to fix them and
> in the case you do there's no need for a new webrev.

Sorry, I forgot about those. I will fix the comments.

> test/compiler/unsafe/TestMaybeNullUnsafeAccess.java
>
> - wouldn't it be safer to run the test with -Xbatch and
> -XX:-UseOnStackReplacement for any case and to make it evident that
> the test relays on the fact that test1() and test2() are both
> compiled but not inlined ?

Ok. Do you suggest adding a comment that states that test1/test2
shouldn't be inlined?

> - you should also update the copyright on most files you've touched.

I don't think I've updated a copyright in years. I thought it was ok to
let bulk periodic copyright updates take care of that.

Roland.