RFR: 8347405: MergeStores with reverse bytes order value [v13]

[Fei Yang]

On Thu, 6 Mar 2025 02:41:43 GMT, kuaiwei <duke at openjdk.org> wrote:

>> That works for me. Maybe you can update the code comments to make it more accurate? Like:
>> `// Exclude riscv64 where ReverseBytes is only conditionally supported`
>
> Comments updated

Thank you!

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PR Review Comment: https://git.openjdk.org/jdk/pull/23030#discussion_r1982605032