[riscv-port] RFR: 8278337: riscv: remove unnecessary ld/sd zr around calls [v2]

[Fei Yang]

On Wed, 8 Dec 2021 07:45:58 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

>> Fixed
>
> Thanks. BTW, you can push another commit after starting the review instead of force pushing.

Yes. To modify your patch in a pull request, just push more changes to the branch the pull request is based on.
Reference:
https://wiki.openjdk.java.net/display/SKARA/FAQ#FAQ-HowdoImodifythechangesinapullrequest?

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PR: https://git.openjdk.java.net/riscv-port/pull/25