RFR: 8349176: Speed up Integer/Long.toString via StringConcatHelper::newArray [v3]

[Shaojin Wen]

On Fri, 2 May 2025 17:35:38 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> The StringConcatHelper methods should not be used outside of StringConcat.

I had a version that used UNSAFE.allocateUninitializedArray , but @liach suggested using StringConcatHelper.newArray

-------------

PR Comment: https://git.openjdk.org/jdk/pull/23353#issuecomment-2847787404