RFR: 8248404: AArch64: Remove uses of long and unsigned long [v2]

[Andrew Haley]

On Tue, 11 Jan 2022 16:00:21 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> ... because this is UB if it doesn't fit.
>
> Yes, I changed this and wasn't really sure how to fix it better.  I'd love if Address had a unit64_t argument but all the callers that just passed 0 wouldn't compile.  The code is like that in the x86 version. So I thought that'd be safe.

Well, I'm not convinced the x86 version is safe, really. It probably is, but the checked_cast costs nothing in production.

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PR: https://git.openjdk.java.net/jdk/pull/7023