[jdk11u-dev] RFR: 8248500: AArch64: Remove the r18 dependency on Windows AArch64

Mon Nov 1 13:18:12 UTC 2021

On Mon, 1 Nov 2021 10:46:06 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> The ABI for AArch64 reserves r18 as a platform register [1]. Linux doesn't make use of it, thus it's available as an additional callee-saved register. This is not the case for Windows and macOS, therefore we have to make HotSpot aware of that.
>> 
>> [1] https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst#61machine-registers
>
> Thank you very much for doing this.

Thanks for the review @theRealAph

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/567