RFR: 8341141: Optimize DirectCodeBuilder [v24]

[Chen Liang]

On Tue, 8 Oct 2024 22:51:46 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> Indeed, the opcode here is pointless if we have a pool adaption; in that case we should just use `ldc(LoadableConstantEntry)`.
>
> Here in writeLoadConstant, some branches have curly braces, and some don't. The style is inconsistent. Should I change it?

I think we can do it in a later cleanup that fixes writeLoadConstant. This patch is already huge.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21243#discussion_r1792606829