RFR: 8341006: Optimize StackMapGenerator detect frames [v3]

[ExE Boss]

On Thu, 3 Oct 2024 13:15:10 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> 1. Construct Frames directly without BitSet
>> 2. Use Frame[] instead of ArrayList
>> 3. Use EMPTY_FRAME_ARRAY for initialization. No need to allocate objects when there is no frame.
>
> Shaojin Wen has updated the pull request incrementally with one additional commit since the last revision:
> 
>   reduce codeSize

src/java.base/share/classes/jdk/internal/classfile/impl/StackMapGenerator.java line 852:

> 850:     /**
> 851:      * Performs detection of mandatory stack map frames in a single bytecode traversing pass
> 852:      * @return detected frames

`@return` on `void` method:
Suggestion:

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PR Review Comment: https://git.openjdk.org/jdk/pull/21183#discussion_r1786788792