RFR: 8364150: RISC-V: Leftover for JDK-8343430 removing old trampoline call [v6]

[Hamlin Li]

On Tue, 29 Jul 2025 12:08:32 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Hi, please consider this small change.
>> 
>> JDK-8343430 removed the old trampoline call on RISC-V. And the new solution (reloc call) loads a target address from stub section and do an indirect call. This means the stub is always there for a NativeCall. So there's no need to check existence of the stub when doing `CallRelocation::fix_relocation_after_move` [1].
>> 
>> We can always return the stub address in `NativeCall::reloc_destination` and use that address in `NativeCall::reloc_set_destination`. This helps simplify the code and saves one `MacroAssembler::target_addr_for_insn` call
>> and one `trampoline_stub_Relocation::get_trampoline_for` call in these two functions respectively.
>> 
>> Testing on linux-riscv64:
>> - [x] tier1-tier3 (release build)
>> - [x] hs:tier1-hs:tier3 (fastdebug build)
>> 
>> [1] https://github.com/openjdk/jdk/blob/master/src/hotspot/share/code/relocInfo.cpp#L404-L406
>
> Fei Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review

Thank you! Looks good.

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Marked as reviewed by mli (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26495#pullrequestreview-3067283595