RFR: 8338936: StringConcatFactory optimize the construction of MethodType and MethodTypeDesc

[Claes Redestad]

On Sun, 25 Aug 2024 11:50:27 GMT, Shaojin Wen <duke at openjdk.org> wrote:

> optimize the construction of MethodType and MethodTypeDesc to reduce memory allocate

Marked as reviewed by redestad (Reviewer).

src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java line 1200:

> 1198:         /**
> 1199:          * Construct the MethodType of the coder method, if there are no parameters it may be UTF16, return null.
> 1200:          * The first parameter is the initialized coder, Only parameter types that can be UTF16 are added.

Suggestion:

         * Construct the MethodType of the coder method. The first parameter is the initialized coder.
         * Only parameter types which can be UTF16 are added. Returns null if no such parameter exists.

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PR Review: https://git.openjdk.org/jdk/pull/20704#pullrequestreview-2259238024
PR Review Comment: https://git.openjdk.org/jdk/pull/20704#discussion_r1730327504