RFR: 8341199: Use ClassFile's new API loadConstant(int)

[Chen Liang]

On Mon, 30 Sep 2024 10:03:57 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> The new API loadConstant(int) can shorten the calling path and can replace ldc when the parameter is of int/Integer type.

Indeed, loadConstant was invented to be more optimized than ldc. This can also avoid cp entries for small values and use 2-byte bipush or 1-byte constants, both smaller in size.

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Marked as reviewed by liach (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21259#pullrequestreview-2337194592