RFR: 8339217: Optimize ClassFile API loadConstant [v6]

[Chen Liang]

On Sat, 14 Sep 2024 02:45:47 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> This is a large method. By splitting it into multiple methods with the same name, the caller can automatically select based on the different types of parameters, avoiding this large call that cannot be inlined, which can also improve startup performance.
>> 
>> * current
>> 
>> CodeBuilder {
>>     default CodeBuilder loadConstant(ConstantDesc value) { ... }
>> }
>> 
>> java.lang.classfile.CodeBuilder::loadConstant (465 bytes)   failed to inline: callee is too large
>
> Shaojin Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix comments

The CSR asks to use `equivalent` instead of `identical` in the specs; I should fix that in a subsequent general ClassFile API docs cleanup.

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PR Comment: https://git.openjdk.org/jdk/pull/20761#issuecomment-2364992208