RFR: 8248404: AArch64: Remove uses of long and unsigned long [v5]

[Andrew Haley]

On Tue, 11 Jan 2022 16:52:52 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Will it silently truncate?  I was getting errors with the unit64_t overloads, I was getting ambiguous calls with address or Register.  Maybe that's equally wrong.
>
> Getting closer to giving up ...

It seems to silently truncate if the only signed type is int. I just put a breakpoint on `LIR_Assembler::as_Address` and watched it happen.

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