RFR: 8368724: RISC-V: Remove AvoidUnalignedAccesses Flag [v6]

[Fei Yang]

On Fri, 10 Oct 2025 09:44:02 GMT, Anjian Wen <wenanjian at openjdk.org> wrote:

>> According to the discuss in https://github.com/openjdk/jdk/pull/27445#, we can use UseUnalignedAccesses and !UseUnalignedAccesses to cover the AvoidUnalignedAccesses Flag, so I Remove the AvoidUnalignedAccesses Flag in this patch
>
> Anjian Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   modify the global flag change

src/hotspot/cpu/riscv/vm_version_riscv.cpp line 161:

> 159:   }
> 160: 
> 161:   if (UseUnalignedAccesses) {

This doesn't look right to me. Because `UseUnalignedAccesses` is used before properly assigned. This option is set at L171.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27510#discussion_r2431000527