RFR: 8264268: Don't use oop types for derived pointers [v2]

[Stefan Karlsson]

On Sat, 27 Mar 2021 23:03:49 GMT, John R Rose <jrose at openjdk.org> wrote:

> Looks good.

Thanks.

> 
> Maybe add `typedef intptr_t derived_oop_t` to make the operations on d-oops a little more distinctive.

I used Kim's enum suggestion.

> 
> Maybe add a static assert that `sizeof(oop) == sizeof(intptr_t)`, just in case there's a problem with compressed oops in the future.

Done.

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PR: https://git.openjdk.java.net/jdk/pull/3214