RFR: 8339168: Optimize ClassFile Util slotSize

[duke]

On Wed, 28 Aug 2024 13:12:35 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> A small optimization to improve the performance of jdk.internal.classfile.impl.Util#slotSize/isDoubleSlot

@wenshao 
Your change (at version 3c58fab74c9f78b7f3008c4f6fa32a7aab79f053) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk/pull/20747#issuecomment-2317429520