RFR: 8334328: Reduce object allocation for FloatToDecimal and DoubleToDecimal [v18]

[Shaojin Wen]

On Wed, 26 Jun 2024 14:22:03 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

>> I looked at it again and I think @cl4es 's suggestion is correct. Can I submit the change? @rgiulietti
>
> Of course, nothing has been approved as of now.
> 
> Since you are preparing a commit anyway, may I ask you to revert back the changes [here](https://github.com/openjdk/jdk/pull/19730#discussion_r1652978056)? Thanks.

I have completed all the suggested changes. Please continue to review.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19730#discussion_r1655132555