RFR: 8341893: AArch64: Micro-optimize compressed ptr decoding

[Andrew Haley]

On Thu, 10 Oct 2024 13:19:32 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Yes, `mov` does the `d != s` optimization. I have no preference whether we do check here or rely on downstream check. Just peeling the `d != s` test from the original if-expression seems marginally easier when thinking about the patch impact.
>
> It is not very clear if you fine with this patch, @aph, or you want me to skip `d != s` check here. :)

Sorry, I can't make up my mind. So leave this as it is.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21443#discussion_r1795433139