RFR: 8329258: TailCall should not use frame pointer register for jump target [v3]

[Tobias Hartmann]

On Thu, 11 Apr 2024 08:26:34 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Tobias Hartmann has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Added RISCV patch and fixed comment
>
> src/hotspot/cpu/aarch64/aarch64.ad line 16193:
> 
>> 16191: // TailJump below removes the return address.
>> 16192: // Don't use rfp for 'jump_target' because a MachEpilogNode has already been
>> 16193: // emitted just above the TailCall and it will reset rfp to the caller state.
> 
> Suggestion:
> 
> // emitted just above the TailCall which has reset rfp to the caller state.

Thanks. I updated the comments accordingly.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18716#discussion_r1560793987