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

[Claes Redestad]

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.

I'm in favor of removing `ldc(ConstantDesc)`, keeping the `ldc(LoadableConstantEntry)` for advanced uses. It's easier to add something back in than to remove a mistake, and if we leave this as-is I think we'll be doomed to trip over this over and over.

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PR Comment: https://git.openjdk.org/jdk/pull/21259#issuecomment-2383236737